TW202212153A - Light reducing film, method for manufacturing same, and laminate - Google Patents

Light reducing film, method for manufacturing same, and laminate Download PDF

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TW202212153A
TW202212153A TW110130933A TW110130933A TW202212153A TW 202212153 A TW202212153 A TW 202212153A TW 110130933 A TW110130933 A TW 110130933A TW 110130933 A TW110130933 A TW 110130933A TW 202212153 A TW202212153 A TW 202212153A
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reducing film
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井上弘康
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日商日本瑞翁股份有限公司
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
    • C08F297/02—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type
    • C08F297/04—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising vinyl aromatic monomers and conjugated dienes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/02—Chemical treatment or coating of shaped articles made of macromolecular substances with solvents, e.g. swelling agents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses

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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
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Abstract

Provided is a light reducing film containing resin and an oil-soluble dye, and having a thickness of 1 [mu]m or more but less than 100 [mu]m, and a b* value of less than 0 in CIE 1976 (L*, a*, b*) color space. Provided is a method for manufacturing the light reducing film comprising: a step for preparing a coating liquid containing the resin, the oil-soluble dye, and a solvent; a step for forming a coating film by applying the coating liquid onto the surface of a base material layer; and a step for obtaining the light reducing film by removing the solvent from the coating film.

Description

減光薄膜及其製造方法，以及堆疊體Light-reducing film, method for making the same, and stack

本發明係關於減光薄膜及其製造方法以及堆疊體。The present invention relates to a light reduction film, a method for producing the same, and a stack.

已有進行將樹脂與功能性材料組合來對樹脂組成物賦予期望之功能（專利文獻1）。Combining a resin and a functional material has been performed to impart a desired function to a resin composition (Patent Document 1).

並且，已知將自樹脂形成之薄膜著色以使用為偏光板的技術（專利文獻2）。In addition, a technique of coloring a film formed from a resin and using it as a polarizing plate is known (Patent Document 2).

『專利文獻』 《專利文獻1》：國際專利公開第2016/163409號（對應外國公報：美國專利申請公開第2018/086029號說明書） 《專利文獻2》：日本專利公開第2004-151264號公報 "Patent Documents" "Patent Document 1": International Patent Publication No. 2016/163409 (corresponding to Foreign Publication: US Patent Application Publication No. 2018/086029) "Patent Document 2": Japanese Patent Laid-Open No. 2004-151264

為了減低在影像顯示裝置之外光的反射，有時會使用包含直線偏光件與相位差板的抗反射薄膜。直線偏光件通常經由多道工序來製造，製造成本高。In order to reduce the reflection of light outside the image display device, an anti-reflection film including a linear polarizer and a retardation plate is sometimes used. Linear polarizers are usually manufactured through multiple processes, and the manufacturing cost is high.

並且，包含直線偏光件的抗反射薄膜由於光的穿透率通常為50%以下，故在使用此種抗反射薄膜的影像顯示裝置中，通常會調高亮度設定來使用，而使消費電力變大。是故，尋求不含直線偏光件、具有反射減低功能的光學薄膜。In addition, since the light transmittance of the anti-reflection film including the linear polarizer is usually less than 50%, in the image display device using such an anti-reflection film, the brightness setting is usually increased, and the power consumption is changed. big. Therefore, optical films that do not contain linear polarizers and have a function of reducing reflection are sought.

再者，為了減低對影像顯示裝置之影像清晰性的影響，抗反射薄膜的霧度以小為佳。Furthermore, in order to reduce the influence on the image clarity of the image display device, the haze of the anti-reflection film is preferably small.

因此，尋求具有減低在影像顯示裝置之外光之反射的功能、霧度小的新薄膜，及其製造方法。Therefore, a new thin film having a function of reducing the reflection of light outside the image display device, a low haze, and a manufacturing method thereof have been sought.

本發明人為解決前述問題而潛心研究的結果，發現藉由包含樹脂及油溶性染料之具有指定厚度的薄膜可解決前述問題，進而完成本發明。As a result of intensive research to solve the above-mentioned problems, the present inventors found that the above-mentioned problems can be solved by a thin film containing a resin and an oil-soluble dye having a predetermined thickness, thereby completing the present invention.

亦即本發明提供以下內容。That is, the present invention provides the following.

［1］一種減光薄膜，其 包含樹脂、油溶性染料，厚度為1 μm以上且未滿100 μm，在CIE 1976（L*, a*, b*）色空間中之b*值未達0。 [1] A light-reducing film, which is Contains resin and oil-soluble dyes, with a thickness of 1 μm or more and less than 100 μm, and the b* value in the CIE 1976 (L*, a*, b*) color space does not reach 0.

［2］如［1］記載之減光薄膜，其中前述油溶性染料相對於前述樹脂的比例為0.01重量%以上且未達2重量%。[2] The light-reducing film according to [1], wherein the ratio of the oil-soluble dye to the resin is 0.01% by weight or more and less than 2% by weight.

［3］如［1］或［2］記載之減光薄膜，其中前述樹脂包含含脂環結構聚合物。[3] The light reduction film according to [1] or [2], wherein the resin contains an alicyclic structure-containing polymer.

［4］如［3］記載之減光薄膜，其中前述含脂環結構聚合物為環烯烴系聚合物或其氫化物。[4] The light-reducing film according to [3], wherein the alicyclic structure-containing polymer is a cycloolefin-based polymer or a hydrogenated product thereof.

［5］如［1］～［4］之任一項記載之減光薄膜，其波長550 nm之光的直線穿透率為25%以上且85%以下。[5] The light-reducing film according to any one of [1] to [4], wherein the linear transmittance of light with a wavelength of 550 nm is 25% or more and 85% or less.

［6］如［1］～［5］之任一項記載之減光薄膜，其波長480 nm之光的直線穿透率比波長610 nm之光的直線穿透率大。[6] The light-reducing film according to any one of [1] to [5], wherein the linear transmittance of light with a wavelength of 480 nm is greater than the linear transmittance of light with a wavelength of 610 nm.

［7］一種堆疊體，其包含如［1］～［6］之任一項記載之減光薄膜與具有透光性之熱塑性樹脂層，前述減光薄膜直接配置於前述熱塑性樹脂層的面。[7] A stacked body comprising the light-reducing film according to any one of [1] to [6] and a light-transmitting thermoplastic resin layer, wherein the light-reducing film is directly disposed on the surface of the thermoplastic resin layer.

［8］一種減光薄膜的製造方法，其係如［1］～［6］之任一項記載之減光薄膜的製造方法，其包含： 準備包含前述樹脂、前述油溶性染料及溶媒之塗布液的工序、將前述塗布液塗布於基材層的面上形成塗布膜的工序，以及自前述塗布膜去除前述溶媒獲得前述減光薄膜的工序。 [8] A method for producing a light-reducing film, which is the method for producing a light-reducing film according to any one of [1] to [6], comprising: The step of preparing a coating liquid containing the resin, the oil-soluble dye and the solvent, the step of applying the coating liquid to the surface of the substrate layer to form a coating film, and the step of removing the solvent from the coating film to obtain the light-reducing film .

根據本發明，可提供具有減低在影像顯示裝置中之外光之反射的功能、霧度小的新減光薄膜，以及減光薄膜的製造方法。According to the present invention, it is possible to provide a new light reduction film having a function of reducing the reflection of external light in an image display device, a small haze, and a method for manufacturing the light reduction film.

以下揭示實施形態及示例物以詳細說明本發明。惟本發明並非受限於以下所示之實施形態及示例物者，在不脫離本發明之申請專利範圍及其均等之範圍的範圍中得任意變更實施。Embodiments and examples are disclosed below to explain the present invention in detail. However, the present invention is not limited to the embodiments and examples shown below, and can be modified and implemented arbitrarily without departing from the scope of the claims of the present invention and their equivalents.

在以下說明中，層體之面內方向的延遲Re，除非另有註記，否則係由Re＝（nx－ny）×d表示之值。於此，nx表示係為層體之與厚度方向垂直之方向（面內方向）且賦予最大之折射率的方向之折射率。ny表示係為層體之前述面內方向且與nx之方向正交的方向之折射率。d表示層的厚度。量測波長除非另有註記，否則為590 nm。In the following description, the retardation Re in the in-plane direction of the layer body is a value represented by Re=(nx−ny)×d unless otherwise noted. Here, nx represents the refractive index in the direction (in-plane direction) perpendicular to the thickness direction of the layer body and in the direction in which the maximum refractive index is given. ny represents the refractive index in the direction orthogonal to the direction of nx, which is the in-plane direction of the layer body. d represents the thickness of the layer. Measurement wavelength is 590 nm unless otherwise noted.

［1.減光薄膜］[1. Light reduction film]

本發明之一實施形態相關之減光薄膜包含樹脂與油溶性染料，厚度為1 μm以上且未達100 μm，在CIE 1976（L*, a*, b*）色空間中之b*值未達0。The light-reducing film related to one embodiment of the present invention contains resin and oil-soluble dye, the thickness is more than 1 μm and less than 100 μm, and the b* value in the CIE 1976 (L*, a*, b*) color space is not up to 0.

減光薄膜通常包含含有樹脂與油溶性染料的樹脂組成物，由該樹脂組成物所形成。A light-reducing film generally contains a resin composition containing a resin and an oil-soluble dye, and is formed from the resin composition.

減光薄膜可具有單層結構，亦可具有多層結構。在減光薄膜具有多層結構的情形中，構成減光薄膜之多個層體通常分別包含含有樹脂與油溶性染料的樹脂組成物，由該樹脂組成物所形成。The light-reducing film may have a single-layer structure or a multi-layer structure. In the case where the light-reducing film has a multi-layer structure, a plurality of layers constituting the light-reducing film usually respectively contain a resin composition containing a resin and an oil-soluble dye, and are formed from the resin composition.

減光薄膜良佳為具有單層結構。The light reduction film preferably has a single-layer structure.

減光薄膜亦可為與其他元件組合的形態，舉例而言，亦可為與樹脂薄膜、玻璃板等基材層堆疊之形態、與離型薄膜、保護薄膜等層體堆疊之形態。The light-reducing film can also be combined with other elements. For example, it can also be stacked with substrate layers such as resin films and glass plates, or stacked with layers such as release films and protective films.

［1.1.樹脂］[1.1. Resin]

減光薄膜包含樹脂。樹脂通常得包含聚合物與因應需求之任意成分。The light reduction film contains resin. The resin usually has to contain the polymer and optional components according to the requirements.

作為減光薄膜所得包含之樹脂之例，可舉出熱固性樹脂及熱塑性樹脂，就易於調整b*值而言，良佳為熱塑性樹脂。As an example of the resin contained in the light-reducing film obtained, a thermosetting resin and a thermoplastic resin can be mentioned, and a thermoplastic resin is preferable because it is easy to adjust the b* value.

作為熱塑性樹脂所得包含之聚合物之例，可列舉：降𦯉烯系聚合物等含有脂環結構之聚合物；聚乙烯、聚丙烯等聚烯烴；聚對酞酸乙二酯、聚對酞酸丁二酯等聚酯；聚苯硫醚等聚芳硫醚；聚乙烯醇；聚碳酸酯；聚芳酯；纖維素酯聚合物；聚醚碸；聚碸；聚芳碸；聚氯乙烯；棒狀液晶聚合物等。Examples of polymers contained in thermoplastic resins include polymers containing alicyclic structures such as noralkene-based polymers; polyolefins such as polyethylene and polypropylene; polyethylene terephthalate and polyethylene terephthalate Polyester such as butanediester; polyarylene sulfide such as polyphenylene sulfide; polyvinyl alcohol; polycarbonate; polyarylate; cellulose ester polymer; polyether; polyarylene; polyvinyl chloride; Rod-like liquid crystal polymers, etc.

聚合物可單獨使用1種，亦可以任意比率組合2種以上使用。並且，聚合物可為均聚物，亦可為共聚物。此等之中，由於機械特性、耐熱性、透明性、低吸濕性、尺寸穩定性及輕量性優異，以含有脂環結構之聚合物為佳。以下有時將含有脂環結構之聚合物適時稱為「含脂環結構聚合物」。A polymer may be used individually by 1 type, and may be used in combination of 2 or more types in arbitrary ratios. In addition, the polymer may be a homopolymer or a copolymer. Among these, polymers containing an alicyclic structure are preferable because they are excellent in mechanical properties, heat resistance, transparency, low hygroscopicity, dimensional stability, and light weight. Hereinafter, the polymer containing an alicyclic structure may be appropriately referred to as an "alicyclic structure-containing polymer".

含脂環結構聚合物，其聚合物之結構單元含有脂環結構。含脂環結構聚合物可於主鏈具有脂環結構，亦可於支鏈具有脂環結構。A polymer containing an alicyclic structure, the structural unit of the polymer contains an alicyclic structure. The alicyclic structure-containing polymer may have an alicyclic structure in the main chain, or may have an alicyclic structure in the branched chain.

作為脂環結構之例，可舉出飽和脂環烴（環烷）結構、不飽和脂環烴（環烯、環炔）結構等。其中，就機械強度及耐熱性的觀點而言，以環烷結構及環烯結構為佳，以環烷結構為尤佳。As an example of an alicyclic structure, a saturated alicyclic hydrocarbon (cycloalkane) structure, an unsaturated alicyclic hydrocarbon (cycloalkene, cycloalkyne) structure, etc. are mentioned. Among them, from the viewpoint of mechanical strength and heat resistance, a cycloalkane structure and a cycloalkene structure are preferable, and a cycloalkane structure is particularly preferable.

構成脂環結構之碳原子數，在每一個脂環結構中的範圍，良佳為4個以上，較佳為5個以上，且良佳為30個以下，較佳為20個以下，尤佳為15個以下。若構成脂環結構之碳原子數在前述範圍，則機械強度、耐熱性及減光薄膜的成形性取得高度平衡，故合適。The number of carbon atoms constituting the alicyclic structure, within the range of each alicyclic structure, is preferably 4 or more, preferably 5 or more, and preferably 30 or less, preferably 20 or less, particularly preferably 15 less than one. When the number of carbon atoms constituting the alicyclic structure is within the aforementioned range, the mechanical strength, heat resistance, and moldability of the light-reducing film are highly balanced, which is suitable.

作為含脂環結構聚合物之例，可列舉：環烯烴系聚合物及其氫化物、環狀共軛二烯系聚合物及其氫化物、乙烯性脂環烴系聚合物及其氫化物。Examples of the alicyclic structure-containing polymer include cycloolefin-based polymers and their hydrogenated products, cyclic conjugated diene-based polymers and their hydrogenated products, and ethylenic alicyclic hydrocarbon-based polymers and their hydrogenated products.

在樹脂包含含脂環結構聚合物的情形中，在樹脂中之含脂環結構聚合物可為1種，亦可為2種以上之任意比率的組合。舉例而言，樹脂可僅包含選自由環烯烴系聚合物及其氫化物而成之群組之1種，亦可包含選自由環烯烴系聚合物及其氫化物而成之群組之2種以上，還可包含環烯烴系聚合物及其氫化物以外的含脂環結構聚合物（例如於後敘述之共聚物A），作為含脂環結構聚合物。When the resin contains an alicyclic structure-containing polymer, the alicyclic structure-containing polymer in the resin may be one type or a combination of two or more types in any ratio. For example, the resin may contain only one selected from the group consisting of a cycloolefin-based polymer and its hydrogenated product, or may contain two selected from the group consisting of a cycloolefinic polymer and its hydrogenated product In the above, an alicyclic structure-containing polymer other than the cycloolefin-based polymer and its hydrogenated product (for example, the copolymer A described later) may be included as the alicyclic structure-containing polymer.

（環烯烴系聚合物及其氫化物）(Cycloolefin-based polymers and their hydrogenated products)

環烯烴系聚合物係包含具有將環烯烴單體聚合而獲得之結構的結構單元的聚合物。作為環烯烴系聚合物之例，可舉出單環的環烯烴系聚合物及多環的環烯烴系聚合物。The cycloolefin-based polymer is a polymer containing a structural unit having a structure obtained by polymerizing a cycloolefin monomer. As an example of a cycloolefin type polymer, a monocyclic cycloolefin type polymer and a polycyclic cycloolefin type polymer are mentioned.

在一實施形態中，就使樹脂之透明性與成形性良好的觀點而言，樹脂所得包含之含脂環結構聚合物，良佳為環烯烴系聚合物或其氫化物，較佳為多環的環烯烴系聚合物或其氫化物，更佳為降𦯉烯系聚合物或其氫化物。In one embodiment, from the viewpoint of improving the transparency and moldability of the resin, the alicyclic structure-containing polymer contained in the resin is preferably a cycloolefin-based polymer or a hydrogenated product thereof, and is preferably a polycyclic polymer. The cycloolefin-based polymer or its hydrogenated product is more preferably a noralkene-based polymer or its hydrogenated product.

在一實施形態中，在樹脂中之環烯烴系聚合物及其氫化物的比例，良佳為50重量%以上，較佳為60重量%以上，更佳為70重量%以上，更佳為80重量%以上，更佳為90重量%以上，更佳為95重量%以上，且通常為100重量%以下，亦可為100重量%。In one embodiment, the ratio of the cycloolefin polymer and its hydrogenated product in the resin is preferably 50% by weight or more, preferably 60% by weight or more, more preferably 70% by weight or more, more preferably 80% by weight % or more, more preferably 90% by weight or more, more preferably 95% by weight or more, and usually 100% by weight or less, and may be 100% by weight.

作為降𦯉烯系聚合物及其氫化物之例，可列舉：具有降𦯉烯結構之單體的開環聚合物，或具有降𦯉烯結構之單體與其他單體的開環共聚物；具有降𦯉烯結構之單體的加成聚合物，或具有降𦯉烯結構之單體與其他單體之加成共聚物；以及此等的氫化物等。此等之中，具有降𦯉烯結構之單體的開環（共）聚合物氫化物，就透明性、成形性、耐熱性、低吸濕性、尺寸穩定性、輕量性等的觀點而言尤為合適。於此所謂「（共）聚合物」，係謂聚合物及共聚物。As an example of a noralkene-based polymer and its hydrogenated product, a ring-opening polymer of a monomer having a noralkene structure, or a ring-opening copolymer of a monomer having a noralkene structure and other monomers; Addition polymers of monomers with noralkene structure, or addition copolymers of monomers with noralkene structure and other monomers; and hydrides of these. Among these, ring-opening (co)polymer hydrogenated products of monomers having a noralkene structure are considered in terms of transparency, moldability, heat resistance, low hygroscopicity, dimensional stability, light weight, and the like. words are particularly appropriate. The term "(co)polymer" as used herein refers to polymers and copolymers.

作為具有降𦯉烯結構之單體，可列舉例如：雙環[2.2.1]庚-2-烯（慣用名：降𦯉烯）、三環[4.3.0.1 2,5]癸-3,7-二烯（慣用名：雙環戊二烯）、7,8-苯并三環[4.3.0.1 2,5]癸-3-烯（慣用名：甲橋四氫茀）、四環[4.4.0.1 2,5.1 7,10]十二-3-烯（慣用名：四環十二烯）及此等化合物之衍生物（例如於環具有取代基者）。於此，作為取代基，可列舉例如：烷基、伸烷基、極性基等。並且，此等取代基亦可多個相同或相異者鍵結成環。並且，具有降𦯉烯結構之單體可單獨使用1種，亦可以任意比率組合2種以上使用。 Examples of monomers having a noralkene structure include bicyclo[2.2.1]hept-2-ene (common name: noralkene), tricyclo[ 4.3.0.12,5 ]dec-3,7- Diene (common name: dicyclopentadiene), 7,8-benzotricyclo[4.3.0.1 2,5 ]dec-3-ene (common name: formazan), tetracyclo[4.4.0.1 2,5.1 7,10 ] Dodec-3-ene (common name: tetracyclododecene) and derivatives of these compounds (eg those having substituents in the ring). Here, as a substituent, an alkyl group, an alkylene group, a polar group, etc. are mentioned, for example. In addition, a plurality of the same or different ones of these substituents may be bonded to form a ring. In addition, the monomer having a noralkene structure may be used alone or in combination of two or more at any ratio.

作為極性基之種類，可舉出例如雜原子或具有雜原子之基團。作為雜原子，可列舉例如：氧原子、氮原子、硫原子、矽原子及鹵素原子。作為極性基之具體例，可列舉：羧基、羰氧羰基、環氧基、羥基、氧基、酯基、矽醇基、矽基、胺基、腈基、磺酸基等。As the kind of polar group, for example, a hetero atom or a group having a hetero atom can be mentioned. As a hetero atom, an oxygen atom, a nitrogen atom, a sulfur atom, a silicon atom, and a halogen atom are mentioned, for example. Specific examples of the polar group include a carboxyl group, a carbonyloxycarbonyl group, an epoxy group, a hydroxyl group, an oxy group, an ester group, a silanol group, a silicon group, an amino group, a nitrile group, a sulfonic acid group, and the like.

作為能夠與具有降𦯉烯結構之單體開環共聚合的其他單體，可列舉例如：環己烯、環庚烯、環辛烯等單環烯烴類及其衍生物；環己二烯、環庚二烯等環狀共軛二烯及其衍生物；等。能夠與具有降𦯉烯結構之單體開環共聚合之其他單體可單獨使用1種，亦可以任意比率組合2種以上使用。Examples of other monomers that can be ring-opening copolymerizable with a monomer having a noralkene structure include monocyclic olefins such as cyclohexene, cycloheptene, and cyclooctene, and derivatives thereof; cyclohexadiene, Cyclic conjugated dienes such as cycloheptadiene and derivatives thereof; etc. Other monomers which can be ring-opened copolymerized with the monomer having a noralkene structure may be used alone or in combination of two or more at any ratio.

具有降𦯉烯結構之單體的開環聚合物，以及具有降𦯉烯結構之單體及能夠與具有降𦯉烯結構之單體共聚合之其他單體的開環共聚物，舉例而言，亦可藉由將單體在眾所周知的開環聚合觸媒的存在下聚合或共聚合來製造。Ring-opening polymers of monomers having nor-ene structures, and ring-opening copolymers of monomers having nor-ene structures and other monomers that can be copolymerized with monomers having nor-ene structures, for example, It can also be produced by polymerizing or copolymerizing monomers in the presence of well-known ring-opening polymerization catalysts.

作為能夠與具有降𦯉烯結構之單體加成共聚合的其他單體，可列舉例如：乙烯、丙烯、1-丁烯等碳數2～20之α-烯烴及此等的衍生物；環丁烯、環戊烯、環己烯等環烯烴及此等的衍生物；1,4-己二烯、4-甲基-1,4-己二烯、5-甲基-1,4-己二烯等非共軛二烯；等。此等之中，以α-烯烴為佳，以乙烯為較佳。並且，能夠與具有降𦯉烯結構之單體加成共聚合之其他單體可單獨使用1種，亦可以任意比率組合2種以上使用。Examples of other monomers that can be addition-copolymerized with monomers having a noralkene structure include α-olefins having 2 to 20 carbon atoms such as ethylene, propylene, and 1-butene, and derivatives thereof; Cycloalkenes such as butene, cyclopentene, cyclohexene, and their derivatives; 1,4-hexadiene, 4-methyl-1,4-hexadiene, 5-methyl-1,4- Non-conjugated dienes such as hexadiene; etc. Among these, α-olefins are preferable, and ethylene is preferable. In addition, other monomers that can be addition-copolymerized with the monomer having a noralkene structure may be used alone or in combination of two or more at any ratio.

具有降𦯉烯結構之單體的加成聚合物，以及具有降𦯉烯結構之單體及能夠與具有降𦯉烯結構之單體共聚合之其他單體的加成共聚物，舉例而言，亦可藉由將單體在眾所周知的加成聚合觸媒的存在下聚合或共聚合來製造。Addition polymers of monomers having a nor-ene structure, and addition copolymers of monomers having a nor-ene structure and other monomers that can be copolymerized with monomers having a nor-ene structure, for example, It can also be produced by polymerizing or copolymerizing monomers in the presence of well-known addition polymerization catalysts.

作為降𦯉烯系聚合物及其氫化物的具體例，可列舉：日本瑞翁公司製「ZEONOR」、JSR公司製「ARTON」、TOPAS Advanced Polymers公司製「TOPAS」。As specific examples of the noralkene-based polymer and its hydrogenated product, "ZEONOR" manufactured by Japan Zeon Corporation, "ARTON" manufactured by JSR Corporation, and "TOPAS" manufactured by TOPAS Advanced Polymers Corporation are mentioned.

作為單環的環烯烴系聚合物及其氫化物，可列舉例如：環己烯、環庚烯、環辛烯等具有單環之環烯烴系單體的加成聚合物及此等之氫化物。Examples of monocyclic cycloolefin-based polymers and their hydrogenated products include addition polymers of monocyclic cycloolefin-based monomers such as cyclohexene, cycloheptene, and cyclooctene, and their hydrogenated products. .

（環狀共軛二烯系聚合物及其氫化物）(Cyclic conjugated diene polymers and their hydrogenated products)

作為環狀共軛二烯系聚合物及其氫化物，可列舉例如：將1,3-丁二烯、異戊二烯、氯平等共軛二烯系單體的加成聚合物進行環化反應而獲得之聚合物；環戊二烯、環己二烯等環狀共軛二烯系單體的1,2-或1,4-加成聚合物；以及此等之氫化物。Examples of cyclic conjugated diene-based polymers and their hydrogenated products include cyclized addition polymers of conjugated diene-based monomers such as 1,3-butadiene, isoprene, and chlorine. Polymers obtained by the reaction; 1,2- or 1,4-addition polymers of cyclic conjugated diene-based monomers such as cyclopentadiene and cyclohexadiene; and hydrogenated products of these.

（乙烯性脂環烴系聚合物及其氫化物）(Ethylene alicyclic hydrocarbon polymers and their hydrogenated products)

作為乙烯性脂環烴系聚合物，可列舉例如：乙烯環己烯、乙烯環己烷等乙烯性脂環烴系單體的聚合物及其氫化物；苯乙烯、α-甲基苯乙烯等將聚合乙烯性芳族烴系單體而成之聚合物所包含之芳環部分氫化而成之氫化物；乙烯性脂環烴系單體與其他單體的共聚物，或乙烯性芳族烴系單體與對此等乙烯性芳族烴系單體能夠共聚合的其他單體的雜亂共聚物或者嵌段共聚物等共聚物之芳環的氫化物；等。作為前述嵌段共聚物，可列舉例如：二嵌段共聚物、三嵌段共聚物或更多的多嵌段共聚物，以及梯度嵌段共聚物等。Examples of the ethylenic alicyclic hydrocarbon-based polymer include polymers of ethylenic alicyclic hydrocarbon-based monomers such as vinylcyclohexene and vinylcyclohexane, and their hydrogenated products; styrene, α-methylstyrene, and the like Hydrogenated products obtained by partially hydrogenating aromatic rings contained in polymers obtained by polymerizing vinyl aromatic hydrocarbon monomers; copolymers of vinyl alicyclic hydrocarbon monomers and other monomers, or vinyl aromatic hydrocarbons Hydrogenated products of aromatic rings of copolymers such as random copolymers or block copolymers of monomers and other monomers that can be copolymerized with these vinyl aromatic hydrocarbon monomers; and the like. As the aforementioned block copolymers, for example, diblock copolymers, triblock copolymers or more multiblock copolymers, gradient block copolymers, and the like can be exemplified.

在一實施形態中，樹脂所得包含之含脂環結構聚合物，係選自由氫化芳族乙烯化合物－共軛二烯嵌段共聚物（以下亦稱共聚物A。）以及氫化芳族乙烯化合物－共軛二烯嵌段共聚物之由含矽原子極性基改質之改質物而成之群組之一種以上。In one embodiment, the alicyclic structure-containing polymer contained in the resin is selected from the group consisting of a hydrogenated aromatic vinyl compound-conjugated diene block copolymer (hereinafter also referred to as copolymer A.) and a hydrogenated aromatic vinyl compound- One or more of the group consisting of a modified substance modified by a polar group containing a silicon atom of the conjugated diene block copolymer.

氫化芳族乙烯化合物－共軛二烯嵌段共聚物係芳族乙烯化合物－共軛二烯嵌段共聚物的氫化物。芳族乙烯化合物－共軛二烯嵌段共聚物，係包含芳族乙烯化合物單元之嵌段與包含共軛二烯單元之嵌段的共聚物。The hydrogenated aromatic vinyl compound-conjugated diene block copolymer is a hydrogenated product of an aromatic vinyl compound-conjugated diene block copolymer. The aromatic vinyl compound-conjugated diene block copolymer is a copolymer of a block comprising an aromatic vinyl compound unit and a block comprising a conjugated diene unit.

氫化芳族乙烯化合物－共軛二烯嵌段共聚物，係具有將芳族乙烯化合物－共軛二烯嵌段共聚物之主鏈及支鏈的碳－碳不飽和鍵結、芳環的碳－碳不飽和鍵結或此等二者之一部分或全部氫化而獲得之結構者。惟在本申請中，氫化物不因其製造方法而受限。Hydrogenated aromatic vinyl compound-conjugated diene block copolymer is a carbon-carbon unsaturated bond between the main chain and branched chain of the aromatic vinyl compound-conjugated diene block copolymer, and an aromatic ring of carbon - A carbon unsaturated bond or a structure obtained by partial or complete hydrogenation of either of these. However, in this application, the hydride is not limited by its manufacturing method.

所謂芳族乙烯化合物單元，係具有將芳族乙烯化合物聚合而獲得之結構的結構單元，所謂共軛二烯單元，係具有將共軛二烯聚合而獲得之結構的結構單元。The aromatic vinyl compound unit is a structural unit having a structure obtained by polymerizing an aromatic vinyl compound, and the conjugated diene unit is a structural unit having a structure obtained by polymerizing a conjugated diene.

作為芳族乙烯化合物，以苯乙烯及其衍生物、乙烯萘及其衍生物為佳，就工業上取得之容易性而言，以使用苯乙烯為尤佳。作為共軛二烯，以鏈狀共軛二烯（直鏈狀共軛二烯、支鏈狀共軛二烯）為佳，具體上可良佳列舉：1,3-丁二烯、異戊二烯（2-甲基-1,3-丁二烯）、2,3-二甲基-1,3-丁二烯、1,3-戊二烯等。此等之中，就工業上取得之容易性而言，以1,3-丁二烯、異戊二烯為尤佳。As the aromatic vinyl compound, styrene and its derivatives, and vinylnaphthalene and its derivatives are preferred, and styrene is particularly preferred in view of ease of industrial acquisition. As the conjugated diene, a chain conjugated diene (straight-chain conjugated diene, branched-chain conjugated diene) is preferred, and specific examples include 1,3-butadiene, isoprene alkene (2-methyl-1,3-butadiene), 2,3-dimethyl-1,3-butadiene, 1,3-pentadiene, etc. Among these, 1, 3- butadiene and isoprene are particularly preferred in terms of ease of industrial acquisition.

作為芳族乙烯化合物－共軛二烯嵌段共聚物，以選自苯乙烯－丁二烯嵌段共聚物、苯乙烯－丁二烯－苯乙烯嵌段共聚物、苯乙烯－異戊二烯嵌段共聚物、苯乙烯－異戊二烯－苯乙烯嵌段共聚物及此等之混合物為佳。作為此等之較具體之例，可列舉記載於日本專利公開第H2-133406號公報、日本專利公開第H2-305814號公報、日本專利公開第H3-72512號公報、日本專利公開第H3-74409號公報以及國際專利公開第2015/099079號等過往技術文獻者。The aromatic vinyl compound-conjugated diene block copolymer is selected from the group consisting of styrene-butadiene block copolymer, styrene-butadiene-styrene block copolymer, styrene-isoprene Block copolymers, styrene-isoprene-styrene block copolymers and mixtures of these are preferred. Specific examples of these include those described in Japanese Patent Laid-Open No. H2-133406, Japanese Patent Laid-Open No. H2-305814, Japanese Patent Laid-Open No. H3-72512, and Japanese Patent Laid-Open No. H3-74409 Publication No. and International Patent Publication No. 2015/099079 and other prior technical documents.

氫化芳族乙烯化合物－共軛二烯嵌段共聚物的氫化率，良佳為90%以上，較佳為97%以上，尤佳為99%以上，且通常為100%以下。氫化率愈高，愈能優化減光薄膜的耐熱性及耐光性。於此，氫化物的氫化率可由利用 1H-NMR之量測來求取。 The hydrogenation rate of the hydrogenated aromatic vinyl compound-conjugated diene block copolymer is preferably 90% or more, preferably 97% or more, particularly preferably 99% or more, and usually 100% or less. The higher the hydrogenation rate, the better the heat resistance and light resistance of the light-reducing film can be optimized. Here, the hydrogenation rate of the hydride can be determined by measurement by 1 H-NMR.

氫化芳族乙烯化合物－共軛二烯嵌段共聚物之主鏈及支鏈的碳－碳不飽和鍵結的氫化率，良佳為95%以上，較佳為99%以上，且通常為100%以下。藉由提高氫化芳族乙烯化合物－共軛二烯嵌段共聚物之主鏈及支鏈的碳－碳不飽和鍵結的氫化率，可更提高減光薄膜的耐光性及抗氧化性。The hydrogenation rate of the carbon-carbon unsaturated bonds in the main chain and the branch chain of the hydrogenated aromatic vinyl compound-conjugated diene block copolymer is preferably 95% or more, preferably 99% or more, and usually 100% the following. By increasing the hydrogenation rate of carbon-carbon unsaturated bonds in the main chain and branched chain of the hydrogenated aromatic vinyl compound-conjugated diene block copolymer, the light resistance and oxidation resistance of the light-reducing film can be further improved.

並且，氫化芳族乙烯化合物－共軛二烯嵌段共聚物之芳環的碳－碳不飽和鍵結的氫化率，良佳為90%以上，較佳為93%以上，尤佳為95%以上，且通常為100%以下。藉由提高芳環的碳－碳不飽和鍵結的氫化率，可提高氫化物的玻璃轉移溫度，故可有效提高減光薄膜的耐熱性。再者，可降低減光薄膜的光彈性係數，減低延遲的顯現。Further, the hydrogenation rate of carbon-carbon unsaturated bonds of aromatic rings in the hydrogenated aromatic vinyl compound-conjugated diene block copolymer is preferably 90% or more, preferably 93% or more, and particularly preferably 95% or more , and usually below 100%. By increasing the hydrogenation rate of the carbon-carbon unsaturated bond of the aromatic ring, the glass transition temperature of the hydride can be increased, so the heat resistance of the light-reducing film can be effectively improved. Furthermore, the photoelastic coefficient of the light-reducing film can be reduced, thereby reducing the appearance of retardation.

作為氫化芳族乙烯化合物－共軛二烯嵌段共聚物，以具有將源自共軛二烯的不飽和鍵結及芳環兩者氫化而成之結構者為佳。The hydrogenated aromatic vinyl compound-conjugated diene block copolymer preferably has a structure in which both the unsaturated bond derived from the conjugated diene and the aromatic ring are hydrogenated.

氫化芳族乙烯化合物－共軛二烯嵌段共聚物之尤佳的嵌段形態，係共軛二烯聚合物氫化物之嵌段［B］的兩端鍵結有芳族乙烯聚合物氫化物之嵌段［A］的三嵌段共聚物，以及聚合物嵌段［A］的兩端鍵結聚合物嵌段［B］，該兩聚合物嵌段［B］的另一端進一步分別鍵結聚合物嵌段［A］的五嵌段共聚物。尤其，［A］－［B］－［A］的三嵌段共聚物就容易製造的觀點而言為尤佳。A particularly preferred block form of the hydrogenated aromatic vinyl compound-conjugated diene block copolymer is a hydrogenated aromatic vinyl polymer bonded to both ends of the block [B] of the hydrogenated conjugated diene polymer. The triblock copolymer of the block [A], and the polymer block [B] is bonded at both ends of the polymer block [A], and the other ends of the two polymer blocks [B] are further bonded respectively. Pentablock copolymer of polymer block [A]. In particular, the triblock copolymer of [A]-[B]-[A] is particularly preferable from the viewpoint of easy production.

在以所有芳族乙烯化合物單體單元占前述嵌段共聚物全體之質量分率為wA，以前述嵌段共聚物中之所有共軛二烯單體單元占前述嵌段共聚物全體之質量分率為wB時，wA與wB的比（wA／wB）良佳為20／80以上，較佳為30／70以上，且良佳為60／40以下，較佳為55／45以下。藉由將前述比wA／wB做成前述範圍的下限值以上，可提升減光薄膜的耐熱性。並且，藉由做成上限值以下，可提高減光薄膜的柔軟性。When the mass fraction of all the aromatic vinyl compound monomer units in the whole block copolymer is wA, and the mass fraction of all the conjugated diene monomer units in the block copolymer in the whole block copolymer is When the ratio is wB, the ratio of wA to wB (wA/wB) is preferably 20/80 or more, preferably 30/70 or more, and preferably 60/40 or less, preferably 55/45 or less. By making the said ratio wA/wB more than the lower limit of the said range, the heat resistance of a light reduction film can be improved. In addition, the flexibility of the light-reducing film can be improved by making it equal to or less than the upper limit value.

氫化芳族乙烯化合物－共軛二烯嵌段共聚物（共聚物A）之由含矽原子極性基改質之改質物，具有藉由將前述氫化芳族乙烯化合物－共軛二烯嵌段共聚物與具有作為單體之含矽原子極性基的化合物接枝聚合而獲得之結構。惟該改質物不因其製造方法而受限。A modified product of a hydrogenated aromatic vinyl compound-conjugated diene block copolymer (copolymer A) modified with a polar group containing a silicon atom, which is obtained by copolymerizing the aforementioned hydrogenated aromatic vinyl compound-conjugated diene block It is a structure obtained by graft polymerization of a compound with a silicon atom-containing polar group as a monomer. However, the modified substance is not limited by its manufacturing method.

作為含矽原子極性基，以烷氧矽基為佳。As the polar group containing a silicon atom, an alkoxysilyl group is preferred.

作為具有得作為用以接枝聚合之單體使用之含矽原子極性基的化合物之例，可列舉：乙烯基三甲氧基矽烷、乙烯基三乙氧基矽烷、烯丙基三甲氧基矽烷、烯丙基三乙氧基矽烷、二甲氧基甲基乙烯基矽烷、二乙氧基甲基乙烯基矽烷、對苯乙烯基三甲氧基矽烷、對苯乙烯基三乙氧基矽烷、3-甲基丙烯醯氧丙基三甲氧基矽烷、3-甲基丙烯醯氧丙基甲基二甲氧基矽烷、3-甲基丙烯醯氧丙基三乙氧基矽烷、3-甲基丙烯醯氧丙基甲基二乙氧基矽烷、3-丙烯醯氧丙基三甲氧基矽烷、3-丙烯醯氧丙基三乙氧基矽烷及2-降𦯉烯-5-基三甲氧基矽烷等具有烷氧矽基之乙烯性不飽和矽烷化合物。Examples of compounds having a silicon atom-containing polar group usable as a monomer for graft polymerization include vinyltrimethoxysilane, vinyltriethoxysilane, allyltrimethoxysilane, Allyltriethoxysilane, Dimethoxymethylvinylsilane, Diethoxymethylvinylsilane, p-styryltrimethoxysilane, p-styryltriethoxysilane, 3- Methacryloyloxypropyltrimethoxysilane, 3-methacryloyloxypropylmethyldimethoxysilane, 3-methacryloyloxypropyltriethoxysilane, 3-methacryloyloxysilane Oxypropylmethyldiethoxysilane, 3-propenyloxypropyltrimethoxysilane, 3-propenyloxypropyltriethoxysilane and 2-norethen-5-yltrimethoxysilane, etc. Ethylenically unsaturated silane compound with alkoxysilyl group.

藉由使共聚物A與具有含矽原子極性基之化合物進行反應，得於共聚物A導入含矽原子極性基，獲得具有含矽原子極性基的改質物。在導入烷氧矽基作為含矽原子極性基的情形中，烷氧矽基的導入量，相對於以共聚物A為100重量份，良佳為0.1重量份以上，較佳為0.2重量份以上，更佳為0.3重量份以上，且良佳為10重量份以下，較佳為5重量份以下，更佳為3重量份以下。若烷氧矽基的導入量落於前述範圍，則可防止因水分等而分解之烷氧矽基彼此的交聯度變得過高，故可維持高接合性。作為使用於烷氧矽基之導入之具有烷氧矽基的物質及改質方法之例，可舉出記載於國際專利公開第2015/099079號等過往技術文獻者。By reacting the copolymer A with a compound having a silicon atom-containing polar group, the silicon atom-containing polar group is introduced into the copolymer A, and a modified substance having a silicon atom-containing polar group is obtained. In the case of introducing an alkoxysilyl group as a polar group containing a silicon atom, the amount of the alkoxysilyl group to be introduced is preferably 0.1 part by weight or more, preferably 0.2 part by weight or more, relative to 100 parts by weight of the copolymer A, It is more preferably 0.3 parts by weight or more, and preferably 10 parts by weight or less, preferably 5 parts by weight or less, and more preferably 3 parts by weight or less. If the introduction amount of the alkoxysilyl group falls within the aforementioned range, the degree of crosslinking between the alkoxysilyl groups decomposed by moisture or the like can be prevented from becoming too high, so that high bonding properties can be maintained. As an example of the substance having an alkoxysilyl group used for the introduction of the alkoxysilyl group and the modification method, those described in the prior art documents such as International Patent Publication No. 2015/099079 can be mentioned.

極性基的導入量得以 1H-NMR譜來測量。並且，在測量極性基之導入量時導入量少的情形中，得增加累加次數來測量。 The amount of polar group introduced was measured by 1 H-NMR spectrum. In addition, in the case where the introduction amount is small when measuring the introduction amount of the polar group, it is necessary to increase the number of times of accumulation for measurement.

於共聚物A導入烷氧矽基作為極性基一事稱為矽烷改質。在矽烷改質時，可使共聚物A直接鍵結烷氧矽基，亦可使之中介例如伸烷基等2價的有機基來鍵結。以下將藉由共聚物A的矽烷改質而獲得之聚合物亦稱為「矽烷改質物」。The introduction of alkoxysilyl groups as polar groups into copolymer A is called silane modification. When the silane is modified, the copolymer A can be directly bonded to an alkoxysilyl group, or can be bonded through a divalent organic group such as an alkylene group. Hereinafter, the polymer obtained by the silane modification of the copolymer A is also referred to as a "silane modification material".

作為共聚物A之由含矽原子極性基改質之改質物，以氫化芳族乙烯化合物－共軛二烯嵌段共聚物之矽烷改質物為佳，以選自氫化苯乙烯－丁二烯嵌段共聚物之矽烷改質物、氫化苯乙烯－丁二烯－苯乙烯嵌段共聚物之矽烷改質物、氫化苯乙烯－異戊二烯嵌段共聚物之矽烷改質物及氫化苯乙烯－異戊二烯－苯乙烯嵌段共聚物之矽烷改質物之一種以上的矽烷改質物為佳。As the modified material of the copolymer A modified by the polar group containing silicon atom, the silane modified material of the hydrogenated aromatic vinyl compound-conjugated diene block copolymer is preferably selected from hydrogenated styrene-butadiene block copolymer. Silane modification of block copolymer, silane modification of hydrogenated styrene-butadiene-styrene block copolymer, silane modification of hydrogenated styrene-isoprene block copolymer and hydrogenated styrene-isoamyl It is preferable that one or more kinds of silane modifiers of the diene-styrene block copolymer are silane modifiers.

在一實施形態中，樹脂所得包含之含脂環結構聚合物以共聚物A之由含矽原子極性基改質之改質物為佳，以共聚物A之由烷氧矽基改質之改質物為較佳，以選自氫化苯乙烯－丁二烯－苯乙烯嵌段共聚物之矽烷改質物、氫化苯乙烯－異戊二烯嵌段共聚物之矽烷改質物及氫化苯乙烯－異戊二烯－苯乙烯嵌段共聚物之矽烷改質物之一種以上的矽烷改質物為更佳。In one embodiment, the alicyclic structure-containing polymer contained in the resin is preferably a modified substance of copolymer A modified by a polar group containing silicon atoms, and a modified substance of copolymer A modified by an alkoxysilyl group Preferably, the modified silane is selected from the group consisting of hydrogenated styrene-butadiene-styrene block copolymers, silane modifications of hydrogenated styrene-isoprene block copolymers, and hydrogenated styrene-isoprene More preferably, one or more silane modifiers of the silane-modified substances of the olefin-styrene block copolymer are used.

在一實施形態中，樹脂中的共聚物A之由含矽原子極性基改質之改質物的比例，良佳為50重量%以上，較佳為60重量%以上，更佳為70重量%以上，更佳為80重量%以上，更佳為90重量%以上，更佳為95重量%以上，且通常為100重量%以下，亦可為100重量%。In one embodiment, the proportion of the modified substance modified by the silicon atom-containing polar group of the copolymer A in the resin is preferably 50% by weight or more, preferably 60% by weight or more, more preferably 70% by weight or more, It is more preferably 80% by weight or more, more preferably 90% by weight or more, more preferably 95% by weight or more, and usually 100% by weight or less, and may be 100% by weight.

含脂環結構聚合物的重量平均分子量（Mw）良佳為10,000以上，較佳為15,000以上，更佳為20,000以上，且良佳為200,000以下，較佳為100,000以下，更佳為80,000以下。具有此種重量平均分子量的含脂環結構聚合物，其機械強度、成形加工性及耐熱性的平衡優異。The weight average molecular weight (Mw) of the alicyclic structure-containing polymer is preferably 10,000 or more, preferably 15,000 or more, more preferably 20,000 or more, and preferably 200,000 or less, preferably 100,000 or less, and more preferably 80,000 or less. The alicyclic structure-containing polymer having such a weight average molecular weight is excellent in the balance of mechanical strength, moldability, and heat resistance.

含脂環結構聚合物的分子量分布（Mw／Mn）良佳為1以上，且良佳為4以下，較佳為3.5以下。在分子量分布為前述範圍之下限值以上的情況下，可提高含脂環結構聚合物的生產性、抑制製造成本。並且，在上限值以下的情況下，由於低分子成分的量會變小，故可提高包含此含脂環結構聚合物之層體的穩定性。The molecular weight distribution (Mw/Mn) of the alicyclic structure-containing polymer is preferably 1 or more, and preferably 4 or less, preferably 3.5 or less. When the molecular weight distribution is equal to or more than the lower limit value of the aforementioned range, the productivity of the alicyclic structure-containing polymer can be improved, and the production cost can be suppressed. Moreover, since the quantity of a low molecular weight component becomes small when it is below the upper limit, the stability of the layer body containing this alicyclic structure containing polymer can be improved.

含脂環結構聚合物的重量平均分子量Mw及數量平均分子量Mn，得藉由使用環己烷作為溶媒的凝膠滲透層析法（以下略稱「GPC」。），以聚異戊二烯換算之值的形式來量測。在樹脂不溶解於環己烷的情況下，得藉由使用甲苯或四氫呋喃作為溶媒的GPC，以聚苯乙烯換算之值的形式來量測。The weight average molecular weight Mw and the number average molecular weight Mn of the alicyclic structure-containing polymer can be obtained in terms of polyisoprene by gel permeation chromatography (hereinafter abbreviated as "GPC") using cyclohexane as a solvent to measure in the form of a value. When the resin does not dissolve in cyclohexane, it can be measured as a value in terms of polystyrene by GPC using toluene or tetrahydrofuran as a solvent.

含脂環結構聚合物的玻璃轉移溫度良佳為50℃以上，較佳為70℃以上，且良佳為200℃以下，較佳為180℃以下。The glass transition temperature of the alicyclic structure-containing polymer is preferably 50°C or higher, preferably 70°C or higher, and preferably 200°C or lower, preferably 180°C or lower.

在樹脂包含含脂環結構聚合物的情形中，在樹脂中之含脂環結構聚合物的比例，良佳為50重量%以上，較佳為60重量%以上，更佳為70重量%以上，更佳為80重量%以上，更佳為90重量%以上，更佳為95重量%以上。且通常為100重量%以下，亦可為100重量%。In the case where the resin contains an alicyclic structure-containing polymer, the proportion of the alicyclic structure-containing polymer in the resin is preferably 50% by weight or more, preferably 60% by weight or more, more preferably 70% by weight or more, and more preferably 50% by weight or more. It is preferably 80% by weight or more, more preferably 90% by weight or more, more preferably 95% by weight or more. And it is usually 100 weight% or less, and may be 100 weight%.

作為樹脂所得包含之聚合物以外的任意成分之例，可列舉：抗氧化劑、塑化劑、紫外線吸收劑、滑劑。任意成分可單獨使用1種，亦可以任意比率組合2種以上使用。Antioxidants, plasticizers, ultraviolet absorbers, and lubricants are exemplified as examples of optional components other than polymers contained in the resin. An arbitrary component may be used individually by 1 type, and may be used in combination of 2 or more types at arbitrary ratios.

在樹脂中之聚合物以外之任意成分的合計比例，良佳為5重量%以下，較佳為3重量%以下，更佳為1重量%以下，且通常0重量%以上，亦可為0重量%。The total ratio of the optional components other than the polymer in the resin is preferably 5 wt % or less, preferably 3 wt % or less, more preferably 1 wt % or less, and usually 0 wt % or more, and may be 0 wt % .

［1.2.油溶性染料］[1.2. Oil-soluble dyes]

減光薄膜包含油溶性染料。所謂油溶性染料，意謂在《染料索引》（英國染色與色料師學會及美國紡織化學及色料師協會的資料庫）中分類在「Solvent Dye」的染料。Light reduction films contain oil-soluble dyes. The so-called oil-soluble dyes means dyes classified as "Solvent Dye" in the "Dye Index" (the database of the British Institute of Dyeing and Colorists and the American Society of Textile Chemists and Colorists).

作為黃色系的油溶性染料的具體例，可列舉：Oil Yellow 105（商品名，Orient Chemical Industries Co., Ltd.製）、Oil Yellow 107（商品名，Orient Chemical Industries Co., Ltd.製）、Oil Yellow 129（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑黃29）、Oil Yellow 3G（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑黃16）、Oil Yellow GGS（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑黃56）、Valifast Yellow 1101（商品名，Orient Chemical Industries Co., Ltd.製）、Valifast Yellow 1105（商品名，Orient Chemical Industries Co., Ltd.製）、Valifast Yellow 4120（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑黃82）、Oleosol Brilliant Yellow 5G（商品名，田岡化學工業股份有限公司製，C.I.溶劑黃150）、Oleosol Fast Yellow 2G（商品名，田岡化學工業股份有限公司製，C.I.溶劑黃21）、Oleosol Fast Yellow GCN（商品名，田岡化學工業股份有限公司製，C.I.溶劑黃151）、Aizen Sot Yellow 1（商品名，保土谷化學工業股份有限公司製，C.I.溶劑黃56）、Aizen Sot Yellow 3（商品名，保土谷化學工業股份有限公司製，C.I.溶劑黃16）、Aizen Sot Yellow 6（商品名，保土谷化學工業股份有限公司製，C.I.溶劑黃33）、Aizen Spilon Yellow GRLH（商品名，保土谷化學工業股份有限公司製）、Aizen Spilon Yellow 3RH（商品名，保土谷化學工業股份有限公司製）、Orasol Yellow 2GLN（商品名，汽巴嘉基公司製，C.I.溶劑黃88）、Orasol Yellow 2RLN（商品名，汽巴嘉基公司製，C.I.溶劑黃89）、Orasol Yellow 3R（商品名，汽巴嘉基公司製，C.I.溶劑黃25）、Oracet Yellow GHS（商品名，汽巴嘉基公司製，C.I.溶劑黃163）、Filamid Yellow R（商品名，汽巴嘉基公司製，C.I.溶劑黃21）、Oil Yellow 185（商品名，中央合成化學股份有限公司製，C.I.溶劑紅18類似品）、Alcohol Yellow Y-10（商品名，中央合成化學股份有限公司製）及Diaresin Yellow L3G（商品名，三菱化成股份有限公司製，C.I.溶劑黃93）。Specific examples of yellow-based oil-soluble dyes include Oil Yellow 105 (trade name, manufactured by Orient Chemical Industries Co., Ltd.), Oil Yellow 107 (trade name, manufactured by Orient Chemical Industries Co., Ltd.), Oil Yellow 129 (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Yellow 29), Oil Yellow 3G (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Yellow 16), Oil Yellow GGS ( Trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Yellow 56), Valifast Yellow 1101 (trade name, manufactured by Orient Chemical Industries Co., Ltd.), Valifast Yellow 1105 (trade name, manufactured by Orient Chemical Industries Co., Ltd.), Valifast Yellow 4120 (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Yellow 82), Oleosol Brilliant Yellow 5G (trade name, manufactured by Tagoka Chemical Industries Co., Ltd., C.I. Solvent Yellow 150), Oleosol Fast Yellow 2G (trade name, manufactured by Tagoka Chemical Co., Ltd., C.I. Solvent Yellow 21), Oleosol Fast Yellow GCN (trade name, manufactured by Tagoka Chemical Co., Ltd., C.I. Solvent Yellow 151), Aizen Sot Yellow 1 (trade name, C.I. Solvent Yellow 151) name, manufactured by Hodogaya Chemical Industry Co., Ltd., C.I. Solvent Yellow 56), Aizen Sot Yellow 3 (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd., C.I. Solvent Yellow 16), Aizen Sot Yellow 6 (trade name, Hodogaya Chemical Industry Co., Ltd. Chemical Industry Co., Ltd., C.I. Solvent Yellow 33), Aizen Spilon Yellow GRLH (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd.), Aizen Spilon Yellow 3RH (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd.), Orasol Yellow 2GLN (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Yellow 88), Orasol Yellow 2RL N (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Yellow 89), Orasol Yellow 3R (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Yellow 25), Oracet Yellow GHS (trade name, manufactured by Ciba-Geigy Corporation) manufactured by C.I. Solvent Yellow 163), Filamid Yellow R (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Yellow 21), Oil Yellow 185 (trade name, manufactured by Chuo Synthetic Chemical Co., Ltd., similar to C.I. Solvent Red 18) , Alcohol Yellow Y-10 (trade name, manufactured by Chuo Synthetic Chemical Co., Ltd.) and Diaresin Yellow L3G (trade name, manufactured by Mitsubishi Chemical Corporation, C.I. Solvent Yellow 93).

作為紅色系的油溶性染料的具體例，可列舉：Oil Red 5B（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑紅27）、Oil Red RR（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑紅24）、Valifast Red 1306（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑紅109）、Valifast Red 1355（商品名，Orient Chemical Industries Co., Ltd.製）、Valifast Red 2303（商品名，Orient Chemical Industries Co., Ltd.製）、Valifast Red 3304（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑紅8）、Valifast Red 3306（商品名，Orient Chemical Industries Co., Ltd.製）、Valifast Red 3320（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑紅132）、Oil Pink 312（商品名，Orient Chemical Industries Co., Ltd.製）、Valifast Pink 2310N（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑紅218）、Oleosol Fast Red BL（商品名，田岡化學工業股份有限公司製，C.I.溶劑紅132）、Oleosol Fast Red RL（商品名，田岡化學工業股份有限公司製，C.I.溶劑紅122）、Oleosol Fast Red GL（商品名，田岡化學工業股份有限公司製，C.I.溶劑紅132）、Oleosol Red 2G（商品名，田岡化學工業股份有限公司製）、Oleosol Fast Pink FB（商品名，田岡化學工業股份有限公司製，C.I.溶劑紅218）、Aizen Sot Red 1（商品名，保土谷化學工業股份有限公司製，C.I.溶劑紅24）、Aizen Sot Red 2（商品名，保土谷化學工業股份有限公司製，C.I.溶劑紅27）、Aizen Sot Red 3（商品名，保土谷化學工業股份有限公司製，C.I.溶劑紅18）、Aizen Spilon Red BEH（商品名，保土谷化學工業股份有限公司製）、Aizen Spilon Fiery Red BH（商品名，保土谷化學工業股份有限公司製，C.I.溶劑紅81）、Aizen Spilon Red GEH（商品名，保土谷化學工業股份有限公司製）、Aizen Spilon Red C-GH（商品名，保土谷化學工業股份有限公司製）、Aizen Sot Pink 1（商品名，保土谷化學工業股份有限公司製，C.I.溶劑紅49）、Orasol Red 3GL（商品名，汽巴嘉基公司製，C.I.溶劑紅130）、Orasol Red 2BL（商品名，汽巴嘉基公司製，C.I.溶劑紅132）、Orasol Red G（商品名，汽巴嘉基公司製，C.I.溶劑紅125）、Orasol Red B（商品名，汽巴嘉基公司製，C.I.溶劑紅7）、Filamid Red GR（商品名，汽巴嘉基公司製，C.I.溶劑紅225）、Filester Red GA（商品名，汽巴嘉基公司製，C.I.溶劑紅135）、Filester Red RBA（商品名，汽巴嘉基公司製，C.I.溶劑紅230）、Orasol Pink 5BLG（商品名，汽巴嘉基公司製，C.I.溶劑紅127）、Oil Pink 330（商品名，中央合成化學股份有限公司製，C.I.溶劑紅49）、Alcohol Pink P-30（商品名，中央合成化學股份有限公司製）、Diaresin Red K（商品名，三菱化成股份有限公司製，C.I.溶劑紅155）及Diaresin Red H5B（商品名，三菱化成股份有限公司製，C.I.溶劑紅52）。Specific examples of red-based oil-soluble dyes include Oil Red 5B (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Red 27), Oil Red RR (trade name, manufactured by Orient Chemical Industries Co., Ltd., Ltd., C.I. Solvent Red 24), Valifast Red 1306 (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Red 109), Valifast Red 1355 (trade name, manufactured by Orient Chemical Industries Co., Ltd.) , Valifast Red 2303 (trade name, manufactured by Orient Chemical Industries Co., Ltd.), Valifast Red 3304 (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Red 8), Valifast Red 3306 (trade name, Orient Chemical Industries Co., Ltd.), Valifast Red 3320 (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Red 132), Oil Pink 312 (trade name, manufactured by Orient Chemical Industries Co., Ltd.) , Valifast Pink 2310N (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Red 218), Oleosol Fast Red BL (trade name, manufactured by Tagoka Chemical Industries Co., Ltd., C.I. Solvent Red 132), Oleosol Fast Red RL (trade name, manufactured by Tagoka Chemical Industry Co., Ltd., C.I. Solvent Red 122), Oleosol Fast Red GL (trade name, manufactured by Tagoka Chemical Industry Co., Ltd., C.I. Solvent Red 132), Oleosol Red 2G (trade name, manufactured by Tagoka Chemical Industry Co., Ltd. Co., Ltd.), Oleosol Fast Pink FB (trade name, manufactured by Taoka Chemical Industry Co., Ltd., C.I. Solvent Red 218), Aizen Sot Red 1 (trade name, manufactured by Hodogaya Chemical Co., Ltd., C.I. Solvent Red 24) , Aizen Sot Red 2 (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd., C.I. Solvent Red 27 ), Aizen Sot Red 3 (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd., C.I. Solvent Red 18), Aizen Spilon Red BEH (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd.), Aizen Spilon Fiery Red BH (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd.) name, manufactured by Hodogaya Chemical Industry Co., Ltd., C.I. Solvent Red 81), Aizen Spilon Red GEH (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd.), Aizen Spilon Red C-GH (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd. Co., Ltd.), Aizen Sot Pink 1 (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd., C.I. Solvent Red 49), Orasol Red 3GL (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Red 130), Orasol Red 2BL (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Red 132), Orasol Red G (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Red 125), Orasol Red B (trade name, manufactured by Ciba-Geigy Corporation) manufactured by C.I. Solvent Red 7), Filamid Red GR (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Red 225), Filester Red GA (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Red 135), Filester Red RBA (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Red 230), Orasol Pink 5BLG (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Red 127), Oil Pink 330 (trade name, Chuo Synthetic Chemical Co., Ltd. Company made, C.I. Solvent Red 49), Alcohol Pink P-30 (trade name, manufactured by Chuo Synthetic Chemical Co., Ltd.), Diaresin Red K (trade name, manufactured by Mitsubishi Chemical Co., Ltd., C.I. Solvent Red 155) and Diaresin Red H5B (trade name, manufactured by Mitsubishi Chemical Co., Ltd., C.I. Solvent Red 52).

作為青色系的油溶性染料的具體例，可列舉：Oil Blue 613（商品名，Orient Chemical Industries Co., Ltd.製）、Oil Blue 2N（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑藍35）、Oil Blue BOS（商品名，Orient Chemical Industries Co., Ltd.製）、Valifast Blue 1603（商品名，Orient Chemical Industries Co., Ltd.製）、Valifast Blue 1605（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑藍38）、Valifast Blue 1607（商品名，Orient Chemical Industries Co., Ltd.製）、Valifast Blue 2606（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑藍70）、Valifast Blue 2610（商品名，Orient Chemical Industries Co., Ltd.製）、Oleosol Fast Blue ELN（商品名，田岡化學工業股份有限公司製，C.I.溶劑藍70）、Oleosol Fast Blue GL（商品名，田岡化學工業股份有限公司製，C.I.溶劑藍70）、Oleosol Blue G（商品名，田岡化學工業股份有限公司製）、Aizen Sot Blue 1（商品名，保土谷化學工業股份有限公司製，C.I.溶劑藍25）、Aizen Sot Blue 2（商品名，保土谷化學工業股份有限公司製，C.I.溶劑藍14）、Aizen Spilon Blue GNH（商品名，保土谷化學工業股份有限公司製）、Aizen Spilon Blue 2BNH（商品名，保土谷化學工業股份有限公司製）、Aizen Spilon Blue BPNH（商品名，保土谷化學工業股份有限公司製）、Aizen Spilon Blue E2BH（商品名，保土谷化學工業股份有限公司製，C.I.溶劑藍73）、Orasol Blue GN（商品名，汽巴嘉基公司製，C.I.溶劑藍67）、Orasol Blue 2GLN（商品名，汽巴嘉基公司製，C.I.溶劑藍48）、Oracet Blue 2R（商品名，汽巴嘉基公司製，C.I.溶劑藍68）、Oil Blue BO（商品名，中央合成化學股份有限公司製，C.I.溶劑藍25）、Filamid Blue R（商品名，汽巴嘉基公司製，C.I.溶劑藍132）、Filester Blue GN（商品名，汽巴嘉基公司製，C.I.溶劑藍67）、Kayaset Blue K-FL（商品名，日本化藥股份有限公司製）、Alcohol Blue B-10（商品名，中央合成化學股份有限公司製）及Diaresin Blue H3G（商品名，三菱化成股份有限公司製）。Specific examples of cyan-based oil-soluble dyes include Oil Blue 613 (trade name, manufactured by Orient Chemical Industries Co., Ltd.), Oil Blue 2N (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Blue 35), Oil Blue BOS (trade name, manufactured by Orient Chemical Industries Co., Ltd.), Valifast Blue 1603 (trade name, manufactured by Orient Chemical Industries Co., Ltd.), Valifast Blue 1605 (trade name, manufactured by Orient Chemical Industries Co., Ltd.) Industries Co., Ltd., C.I. Solvent Blue 38), Valifast Blue 1607 (trade name, manufactured by Orient Chemical Industries Co., Ltd.), Valifast Blue 2606 (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Blue 70), Valifast Blue 2610 (trade name, manufactured by Orient Chemical Industries Co., Ltd.), Oleosol Fast Blue ELN (trade name, manufactured by Tagoka Chemical Industry Co., Ltd., C.I. Solvent Blue 70), Oleosol Fast Blue GL ( Trade name, manufactured by Tagoka Chemical Industry Co., Ltd., C.I. Solvent Blue 70), Oleosol Blue G (trade name, manufactured by Tagoka Chemical Industry Co., Ltd.), Aizen Sot Blue 1 (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd., C.I. Solvent Blue 25), Aizen Sot Blue 2 (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd., C.I. Solvent Blue 14), Aizen Spilon Blue GNH (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd.), Aizen Spilon Blue 2BNH (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd.), Aizen Spilon Blue BPNH (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd.), Aizen Spilon Blue E2BH (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd., C.I. Solvent Blue 73), Orasol Blue GN (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Blue 67), Orasol Blue 2GLN (trade name, Ciba-Geigy Corporation) Co., Ltd., C.I. Solvent Blue 48), Oracet Blue 2R (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Blue 68), Oil Blue BO (trade name, manufactured by Chuo Synthetic Chemical Co., Ltd., C.I. Solvent Blue 25), Filamid Blue R (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Blue 132), Filester Blue GN (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Blue 67), Kayaset Blue K-FL (trade name, Japan Kayaku Co., Ltd.), Alcohol Blue B-10 (trade name, manufactured by Chuo Synthetic Chemical Co., Ltd.), and Diaresin Blue H3G (trade name, manufactured by Mitsubishi Chemical Co., Ltd.).

作為黑色系的油溶性染料的具體例，可列舉：Oil Black HBB（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑黑3）、Oil Black 860（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑黑3）、Oil Black BS（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑黑7）、Oil Black BY（商品名，Orient Chemical Industries Co., Ltd.製）、Valifast Black 1802（商品名，Orient Chemical Industries Co., Ltd.製）、Valifast Black 1807（商品名，Orient Chemical Industries Co., Ltd.製）、Valifast Black 3804（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑黑34）、Valifast Black 3810（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑黑29）、Valifast Black 3820（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑黑27）、Valifast Black 3830（商品名，Orient Chemical Industries Co., Ltd.製）、Spirit Black SB（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑黑5）、Spirit Black SSBB（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑黑5）、Spirit Black AB（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑黑5）、Nigrosine Base（商品名，Orient Chemical Industries Co., Ltd.製，C.I.溶劑黑7）、Oleosol Fast Black RL（商品名，田岡化學工業股份有限公司製，C.I.溶劑黑27）、Oleosol Black AR（商品名，田岡化學工業股份有限公司製）、Aizen Sot Black 6（商品名，保土谷化學工業股份有限公司製，C.I.溶劑黑3）、Aizen Sot Black 8（商品名，保土谷化學工業股份有限公司製，C.I.溶劑黑7）、Aizen Spilon Black MH（商品名，保土谷化學工業股份有限公司製）、Aizen Spilon Black GMH Special（商品名，保土谷化學工業股份有限公司製）、Aizen Spilon Black RLH Special（商品名，保土谷化學工業股份有限公司製）、Orasol Black CN（商品名，汽巴嘉基公司製，C.I.溶劑黑28）、Orasol Black RLI（商品名，汽巴嘉基公司製，C.I.溶劑黑29）及Oil Black FS Special A（商品名，中央合成化學股份有限公司製，C.I.溶劑黑7）。Specific examples of black-based oil-soluble dyes include Oil Black HBB (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Black 3), Oil Black 860 (trade name, manufactured by Orient Chemical Industries Co., Ltd., Ltd., C.I. Solvent Black 3), Oil Black BS (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Black 7), Oil Black BY (trade name, manufactured by Orient Chemical Industries Co., Ltd.) , Valifast Black 1802 (trade name, manufactured by Orient Chemical Industries Co., Ltd.), Valifast Black 1807 (trade name, manufactured by Orient Chemical Industries Co., Ltd.), Valifast Black 3804 (trade name, manufactured by Orient Chemical Industries Co., Ltd., Ltd., C.I. Solvent Black 34), Valifast Black 3810 (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Black 29), Valifast Black 3820 (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Black 27), Valifast Black 3830 (trade name, manufactured by Orient Chemical Industries Co., Ltd.), Spirit Black SB (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Black 5), Spirit Black SSBB (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Black 5), Spirit Black AB (trade name, manufactured by Orient Chemical Industries Co., Ltd., C.I. Solvent Black 5), Nigrosine Base (trade name, Orient manufactured by Chemical Industries Co., Ltd., C.I. Solvent Black 7), Oleosol Fast Black RL (trade name, manufactured by Tagoka Chemical Industry Co., Ltd., C.I. Solvent Black 27), Oleosol Black AR (trade name, manufactured by Tagoka Chemical Industry Co., Ltd.), Aizen Sot Black 6 (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd., C.I. Solvent Black 3), Aizen Sot Black 8 (trade name , manufactured by Hodogaya Chemical Industry Co., Ltd., C.I. Solvent Black 7), Aizen Spilon Black MH (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd.), Aizen Spilon Black GMH Special (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd. made), Aizen Spilon Black RLH Special (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd.), Orasol Black CN (trade name, manufactured by Ciba-Geigy Corporation, C.I. Solvent Black 28), Orasol Black RLI (trade name, steam C.I. Solvent Black 29) and Oil Black FS Special A (trade name, manufactured by Chuo Synthetic Chemical Co., Ltd., C.I. Solvent Black 7).

油溶性染料可單獨使用1種，亦可以任意比率組合2種以上使用。並且，作為油溶性染料，以在常溫（良佳為20±5℃）下於環己烷中會溶解0.02重量%以上者為佳。藉由使用此種油溶性染料，與多樣的熱塑性樹脂（例如包含含脂環結構聚合物的樹脂）組合一事會變得容易。The oil-soluble dye may be used alone or in combination of two or more at any ratio. Moreover, as an oil-soluble dye, it is preferable that it melt|dissolves 0.02weight% or more in cyclohexane at normal temperature (20±5 degreeC of good). By using such an oil-soluble dye, it becomes easy to combine with various thermoplastic resins such as resins containing alicyclic structure-containing polymers.

油溶性染料相對於樹脂的比例，就對減光薄膜有效賦予減光特性的觀點而言，良佳為0.01重量%以上，較佳為0.05重量%以上，就有效減低減光薄膜的霧度的觀點而言，良佳為未達2重量%，較佳為1.5重量%以下。The ratio of the oil-soluble dye to the resin is preferably 0.01% by weight or more, preferably 0.05% by weight or more, from the viewpoint of effectively imparting light-reducing properties to the light-reducing film, from the viewpoint of effectively reducing the haze of the light-reducing film More preferably, it is less than 2 wt %, and preferably 1.5 wt % or less.

於此，前述油溶性染料的比例，係將減光薄膜所包含之樹脂重量定為100重量%時的值。Here, the ratio of the aforementioned oil-soluble dye is a value when the weight of the resin contained in the light-reducing film is 100% by weight.

［1.3.減光薄膜的厚度］[1.3. Thickness of light reduction film]

減光薄膜的厚度，就對減光薄膜賦予減光特性的觀點而言，通常為1 μm以上，良佳為1.5 μm以上，較佳為2 μm以上，就減低減光薄膜的霧度的觀點而言，通常未達100 μm，良佳為50 μm以下，較佳為20 μm以下。The thickness of the light-reducing film is usually 1 μm or more, preferably 1.5 μm or more, preferably 2 μm or more, from the viewpoint of imparting light-reducing properties to the light-reducing film, and from the viewpoint of reducing the haze of the light-reducing film. In other words, it is usually less than 100 μm, preferably 50 μm or less, and preferably 20 μm or less.

減光薄膜的厚度可因應減光薄膜的製造方法，藉由以往眾所周知的方法來調整。舉例而言，在藉由使用塗布器之塗布法來製造減光薄膜的情形中，可藉由調整溶媒量等來調整塗布液的黏度、調整塗布塗布液的塗布器之縫隙等來加以調整。The thickness of the light reduction film can be adjusted by a conventionally well-known method according to the manufacturing method of the light reduction film. For example, in the case of producing a light-reducing film by a coating method using an applicator, the viscosity of the coating solution can be adjusted by adjusting the amount of solvent, etc., and the gap of the applicator for applying the coating solution can be adjusted.

減光薄膜的厚度可藉由微細形狀量測裝置、分光式膜厚量測裝置等來量測。舉例而言，在減光薄膜形成於離型薄膜等基材層上的情形中，得藉由將減光薄膜自基材層部分剝離，利用微細形狀量測裝置量測基材層表面與減光薄膜表面的段差形狀來加以量測。The thickness of the light-reducing film can be measured by a micro-shape measuring device, a spectroscopic film thickness measuring device, or the like. For example, in the case where the light-reducing film is formed on a substrate layer such as a release film, the surface of the substrate layer and the surface of the substrate layer can be measured by a micro-shape measuring device by partially peeling the light-reducing film from the substrate layer. The step shape of the optical film surface is measured.

［1.4.減光薄膜的b*值］[1.4. b* value of light reduction film]

減光薄膜在CIE 1976（L*, a*, b*）色空間中之b*值通常未達0，良佳為－1以下，較佳為－2以下。藉此，減光薄膜之藍色區段的光的直線穿透率與減光薄膜的減光特性會取得平衡。是故，得將減光薄膜合適使用作為具有反射元件、藍色區段的發光強度相較於其他區段的發光強度為小的影像顯示裝置（例如有機電致發光影像顯示裝置）的抗反射薄膜。The b* value of the light-reducing film in the CIE 1976 (L*, a*, b*) color space is usually less than 0, preferably -1 or less, preferably -2 or less. In this way, the linear transmittance of light in the blue region of the light-reducing film and the light-reducing properties of the light-reducing film can be balanced. Therefore, it is necessary to use the light-reducing film as an anti-reflection film for an image display device (such as an organic electroluminescence image display device) with a reflective element, and the luminous intensity of the blue segment is smaller than that of other segments. film.

減光薄膜的b*值良佳為－40以上，較佳為－25以上。The b* value of the light reduction film is preferably -40 or more, preferably -25 or more.

減光薄膜的b*值得藉由色度計來量測。The b* value of the light-reducing film is measured by a colorimeter.

減光薄膜的b*值可藉由調整減光薄膜所含有之油溶性染料的顏色及濃度來加以調整。The b* value of the light-reducing film can be adjusted by adjusting the color and concentration of the oil-soluble dye contained in the light-reducing film.

［1.5.減光薄膜之光的直線穿透率］[1.5. Linear transmittance of light from dimming film]

減光薄膜良佳上，波長550 nm之光的直線穿透率T 550通常為25%以上，良佳為27.5%以上，較佳為30%以上，且通常為85%以下，良佳為80%以下，較佳為75%以下。 In terms of good light-reducing film, the linear transmittance T 550 of light with a wavelength of 550 nm is usually more than 25%, good is more than 27.5%, preferably more than 30%, and usually less than 85%, good is less than 80%, Preferably it is 75% or less.

藉由波長550 nm之光的直線穿透率位於前述範圍內，得將減光薄膜的減光特性做成更適度者。其結果，在將減光薄膜使用於影像顯示裝置的抗反射薄膜的情形中，可更圖求影像顯示裝置的畫面清晰度與反射減低性能的兼顧。Since the linear transmittance of light with a wavelength of 550 nm is within the aforementioned range, the light-reducing properties of the light-reducing film can be made more moderate. As a result, when the light-reducing film is used as an anti-reflection film of an image display device, it is possible to achieve a balance between the screen clarity of the image display device and the reflection reduction performance.

減光薄膜良佳為波長480 nm之光的直線穿透率T 480比波長610 nm之光的直線穿透率T 610大。藉此，得將減光薄膜合適使用作為具有反射元件、藍色區段的發光強度相較於其他區段的發光強度為小的影像顯示裝置（例如有機電致發光影像顯示裝置）的抗反射薄膜。 A good light-reducing film is that the linear transmittance T 480 of light with a wavelength of 480 nm is greater than the linear transmittance T 610 of light with a wavelength of 610 nm. Therefore, the light-reducing film can be suitably used as an anti-reflection device for an image display device (such as an organic electroluminescence image display device) having a reflective element and the luminous intensity of the blue segment is smaller than that of the other segments. film.

波長480 nm之光的直線穿透率T 480與波長610 nm之光的直線穿透率T 610的差（T 480－T 610），良佳為2%以上，較佳為3%以上，更佳為5%以上，且良佳為30%以下，較佳為25%以下，更佳為21%以下或20%以下。 The difference between the linear transmittance T 480 of the light with a wavelength of 480 nm and the linear transmittance T 610 of the light with a wavelength of 610 nm (T 480 - T 610 ), good is 2% or more, preferably 3% or more, more preferably It is 5% or more, and good is 30% or less, preferably 25% or less, more preferably 21% or less or 20% or less.

光的直線穿透率得藉由分光光度計來量測。The linear transmittance of light is measured by a spectrophotometer.

［1.6.減光薄膜的特性］[1.6. Characteristics of light reduction film]

減光薄膜具有低的霧度值。減光薄膜的霧度值良佳為1%以下，較佳為0.5%以下，更佳為0.3%以下，且通常為0%以上。Light reduction films have low haze values. The haze value of the light reduction film is preferably 1% or less, preferably 0.5% or less, more preferably 0.3% or less, and usually 0% or more.

減光薄膜的霧度值得藉由霧度計來量測。The haze of the light-reducing film should be measured by a haze meter.

［1.7.減光薄膜的用途］[1.7. Application of light reduction film]

減光薄膜如前所述具有低的霧度值，具有減光功能。因此，得將減光薄膜合適使用作為將在影像顯示裝置中之反射光減光而不會大幅損害畫面清晰性的抗反射薄膜。The light-reducing film has a low haze value and has a light-reducing function as described above. Therefore, the light-reducing film has to be suitably used as an anti-reflection film that reduces the reflected light in the image display device without greatly impairing the clarity of the picture.

［2.堆疊體］[2. Stacked body]

本發明之一實施形態相關之堆疊體包含前述減光薄膜與具有透光性的熱塑性樹脂層。前述減光薄膜直接配置於前述熱塑性樹脂層的面。藉由堆疊體具有前述構造，得減低堆疊體的捲曲。A stacked body according to an embodiment of the present invention includes the light-reducing film and a light-transmitting thermoplastic resin layer. The said light reduction film is arrange|positioned directly on the surface of the said thermoplastic resin layer. With the stacked body having the aforementioned configuration, the curl of the stacked body can be reduced.

關於堆疊體所包含之減光薄膜之例及佳例，與前述減光薄膜之例及佳例相同。The examples and preferred examples of the light reduction film included in the stack are the same as the aforementioned examples and preferred examples of the light reduction film.

熱塑性樹脂層包含熱塑性樹脂，係由熱塑性樹脂形成之層體。熱塑性樹脂通常包含熱塑性的聚合物與因應需求之任意成分。作為熱塑性樹脂所得包含之聚合物之例，可舉出與減光薄膜所得包含之聚合物相同之例。此等例之中，由於機械特性、耐熱性、透明性、低吸濕性、尺寸穩定性及輕量性優異，以含脂環結構聚合物為佳。The thermoplastic resin layer contains a thermoplastic resin, and is a layer body formed of the thermoplastic resin. Thermoplastic resins generally contain thermoplastic polymers and optional components according to requirements. As an example of the polymer contained in the thermoplastic resin, the same examples as those contained in the light-reducing film can be given. Among these examples, the alicyclic structure-containing polymer is preferable because it is excellent in mechanical properties, heat resistance, transparency, low hygroscopicity, dimensional stability, and light weight.

含脂環結構聚合物之中，以環烯烴系聚合物及其氫化物為佳，以降𦯉烯系聚合物及其氫化物為較佳。Among the alicyclic structure-containing polymers, cycloolefin-based polymers and hydrogenated products thereof are preferred, and noralkene-based polymers and hydrogenated products thereof are preferred.

在熱塑性樹脂中之聚合物的比例，良佳為50重量%以上，較佳為60重量%以上，更佳為70重量%以上，更佳為80重量%以上，更佳為90重量%以上，更佳為95重量%以上，且通常為100重量%以下，亦可為100重量%。The ratio of the polymer in the thermoplastic resin is preferably 50% by weight or more, preferably 60% by weight or more, more preferably 70% by weight or more, more preferably 80% by weight or more, more preferably 90% by weight or more, and more preferably It is preferably 95% by weight or more, and usually 100% by weight or less, and may be 100% by weight.

作為熱塑性樹脂所得包含之任意成分，可列舉：抗氧化劑、塑化劑、紫外線吸收劑、滑劑。任意成分可單獨使用1種，亦可以任意比率組合2種以上使用。Antioxidants, plasticizers, ultraviolet absorbers, and lubricants are exemplified as optional components contained in the thermoplastic resin. An arbitrary component may be used individually by 1 type, and may be used in combination of 2 or more types at arbitrary ratios.

在樹脂中之聚合物以外之任意成分的合計比例，良佳為5重量%以下，較佳為3重量%以下，更佳為1重量%以下，且通常為0重量%以上，亦可為0重量%。The total ratio of the optional components other than the polymer in the resin is preferably 5 wt % or less, preferably 3 wt % or less, more preferably 1 wt % or less, and usually 0 wt % or more, and may be 0 wt % %.

熱塑性樹脂層具有透光性。於此，所謂「具有透光性」，意謂在波長480 nm以上且610 nm以下的範圍中，光的直線穿透率為85%以上。熱塑性樹脂層之在該波長範圍中之光的直線穿透率通常為100%以下。藉由熱塑性樹脂層具有透光性，得對堆疊體賦予減光薄膜所具有之減光特性等光學特性。The thermoplastic resin layer has light transmittance. Here, "having light transmittance" means that the linear transmittance of light is 85% or more in a wavelength range of 480 nm or more and 610 nm or less. The linear transmittance of light in this wavelength range of the thermoplastic resin layer is usually 100% or less. Since the thermoplastic resin layer has light transmittance, it is possible to impart optical properties such as light reduction properties of the light reduction film to the stacked body.

熱塑性樹脂層的厚度，就更減低堆疊體之捲曲的觀點而言，良佳為20 μm以上，較佳為30 μm以上，更佳為50 μm以上，就圖求堆疊體之薄型化的觀點而言，良佳為250 μm以下，較佳為200 μm以下，更佳為150 μm以下。The thickness of the thermoplastic resin layer is preferably 20 μm or more, preferably 30 μm or more, more preferably 50 μm or more, from the viewpoint of further reducing the curl of the stacked body, and from the viewpoint of reducing the thickness of the stacked body , is preferably 250 μm or less, preferably 200 μm or less, and more preferably 150 μm or less.

（實施形態1）(Embodiment 1)

圖1係繪示本發明之實施形態1相關之堆疊體的剖面示意圖。堆疊體100具備減光薄膜110與熱塑性樹脂層120。減光薄膜直接配置於熱塑性樹脂層120之一側的面120U。FIG. 1 is a schematic cross-sectional view of a stacked body according to Embodiment 1 of the present invention. The stacked body 100 includes a light reduction film 110 and a thermoplastic resin layer 120 . The light reduction film is directly disposed on the surface 120U on one side of the thermoplastic resin layer 120 .

（實施形態2）(Embodiment 2)

在另一實施形態中，堆疊體亦可包含第一減光薄膜、第二減光薄膜與熱塑性樹脂層。In another embodiment, the stack may also include a first light reduction film, a second light reduction film and a thermoplastic resin layer.

圖2係繪示本發明之實施形態2相關之堆疊體的剖面示意圖。堆疊體200依序具備第一減光薄膜210、熱塑性樹脂層220與第二減光薄膜230。第一減光薄膜210直接配置於熱塑性樹脂層220之一側的面220U。第二減光薄膜230直接配置於熱塑性樹脂層220之另一側的面220D。FIG. 2 is a schematic cross-sectional view of a stacked body according to Embodiment 2 of the present invention. The stacked body 200 includes a first light reduction film 210 , a thermoplastic resin layer 220 and a second light reduction film 230 in sequence. The first light reduction film 210 is directly disposed on the surface 220U of one side of the thermoplastic resin layer 220 . The second light reduction film 230 is directly disposed on the other side surface 220D of the thermoplastic resin layer 220 .

本實施形態的堆疊體在熱塑性樹脂層的兩面直接配置有減光薄膜。藉此，得有效減低堆疊體的捲曲。In the stacked body of the present embodiment, light reduction films are directly arranged on both surfaces of the thermoplastic resin layer. Thereby, the curl of the stack can be effectively reduced.

第一減光薄膜與第二減光薄膜，其油溶性染料的含有比例、厚度、b*值等亦可相異。就簡化製造工序之觀點及有效減低堆疊體的捲曲之觀點而言，良佳為第一減光薄膜與第二減光薄膜為同一種薄膜。The first light-reducing film and the second light-reducing film may also be different in the content ratio, thickness, b* value, etc. of the oil-soluble dye. From the viewpoint of simplifying the manufacturing process and effectively reducing the curl of the stacked body, it is preferable that the first light-reducing film and the second light-reducing film are the same film.

（堆疊體的光學特性）(optical properties of the stack)

堆疊體之在面內方向上的延遲Re得具有任意之值。The retardation Re of the stack in the in-plane direction may have an arbitrary value.

在一實施形態中，堆疊體之面內方向的延遲Re亦可為20 nm～200 nm，亦可為200 nm～350 nm。藉此，減光薄膜亦得作為λ／4板、λ／2板等相位差薄膜發揮功能。In one embodiment, the retardation Re in the in-plane direction of the stack may be 20 nm to 200 nm, or 200 nm to 350 nm. Thereby, the light reduction film can also function as a retardation film such as a λ/4 plate and a λ/2 plate.

在一實施形態中，堆疊體之面內方向的延遲Re亦可為0 nm～20 nm。In one embodiment, the retardation Re in the in-plane direction of the stack may be 0 nm to 20 nm.

［3.減光薄膜的製造方法］[3. Manufacturing method of light reduction film]

減光薄膜可藉由任意方法來製造。由於可相對較穩定製造薄的薄膜，以藉由塗布法來製造為佳。The light reduction film can be produced by any method. Since a thin film can be produced relatively stably, it is preferably produced by a coating method.

減光薄膜，舉例而言，可藉由包含下述工序（1）～（3）的方法來製造。 工序（1）準備包含前述樹脂、前述油溶性染料及溶媒之塗布液的工序、 工序（2）將前述塗布液塗布在基材層的面上形成塗布膜的工序，以及 工序（3）自前述塗布膜去除前述溶媒獲得前述減光薄膜的工序。 The light reduction film can be produced, for example, by a method including the following steps (1) to (3). Step (1) a step of preparing a coating liquid containing the resin, the oil-soluble dye, and a solvent, step (2) a step of applying the aforementioned coating liquid on the surface of the base material layer to form a coating film, and Step (3) A step of removing the solvent from the coating film to obtain the light reduction film.

通常依序進行工序（1）、工序（2）及工序（3）。Usually, the process (1), the process (2), and the process (3) are performed in this order.

［3.1.工序（1）］[3.1. Process (1)]

在工序（1）中，準備塗布液。塗布液包含樹脂、油溶性染料及溶媒。In step (1), a coating liquid is prepared. The coating liquid contains resin, oil-soluble dye and solvent.

作為溶媒，就減低減光薄膜的霧度、使油溶性染料在減光薄膜中均勻分布的觀點而言，以可溶解樹脂及油溶性染料等減光薄膜所包含之成分的溶媒為佳。From the viewpoint of reducing haze of the light-reducing film and uniformly distributing the oil-soluble dye in the light-reducing film, a solvent that can dissolve components contained in the light-reducing film such as resin and oil-soluble dye is preferable.

作為溶媒之例，可列舉：脂族或脂環烴溶媒（例如戊烷、己烷、環戊烷、環己烷、十氫萘）、芳族烴溶媒（例如甲苯、二甲苯、三甲苯、乙苯、四氫萘）、鹵化烴溶媒（例如二氯甲烷、氯仿、二氯乙烷、氯苯）、醚溶媒（例如1,4-二氧𠮿、四氫呋喃）及酮溶媒（例如二甲酮、環戊酮）。Examples of the solvent include aliphatic or alicyclic hydrocarbon solvents (for example, pentane, hexane, cyclopentane, cyclohexane, decalin), aromatic hydrocarbon solvents (for example, toluene, xylene, mesitylene, ethylbenzene, tetrahydronaphthalene), halogenated hydrocarbon solvents (such as dichloromethane, chloroform, dichloroethane, chlorobenzene), ethereal solvents (such as 1,4-dioxan, tetrahydrofuran), and ketone solvents (such as dimethyl ketone) , cyclopentanone).

在塗布液中之溶媒的量，可因應所期望之塗布液的黏度、所形成之塗布膜的厚度等做成任意量。在塗布液中之溶媒的量並不特別受限，但相對於樹脂1重量份，良佳為1重量份以上，較佳為1.5重量份以上，更佳為3重量份以上，且良佳為20重量份以下，較佳為10重量份以下。The amount of the solvent in the coating liquid can be set arbitrarily according to the desired viscosity of the coating liquid, the thickness of the coating film to be formed, and the like. The amount of the solvent in the coating solution is not particularly limited, but is preferably 1 part by weight or more, preferably 1.5 parts by weight or more, more preferably 3 parts by weight or more, and preferably 20 parts by weight relative to 1 part by weight of the resin part or less, preferably 10 parts by weight or less.

在塗布液中之油溶性染料相對於樹脂的比例，比照在減光薄膜中之油溶性染料相對於樹脂的比例即可。The ratio of the oil-soluble dye to the resin in the coating solution can be compared with the ratio of the oil-soluble dye to the resin in the light-reducing film.

塗布液的製備得以任意方法進行。舉例而言，得藉由於溶媒溶解油溶性染料製備染料溶液、於染料溶液添加樹脂的方法來進行。在塗布液的製備中，亦可利用過濾器來過濾染料溶液。The preparation of the coating liquid can be carried out by any method. For example, it can be performed by a method of preparing a dye solution by dissolving an oil-soluble dye in a solvent, and adding a resin to the dye solution. In the preparation of the coating liquid, the dye solution can also be filtered by using a filter.

在塗布液中，油溶性染料得為溶解於溶媒的狀態。於此，所謂油溶性染料溶解的狀態，並非意謂油溶性染料乳化的壯態及油溶性染料以固體粒子的形式分散於分散媒的狀態之任一者，而係意謂油溶性染料與溶媒構成均勻的系統的狀態。In the coating liquid, the oil-soluble dye is in a state of being dissolved in the solvent. Here, the state in which the oil-soluble dye is dissolved does not mean either the state in which the oil-soluble dye is emulsified or the state in which the oil-soluble dye is dispersed in the dispersing medium in the form of solid particles, but means the oil-soluble dye and the solvent. The state that constitutes a homogeneous system.

［3.2.工序（2）］[3.2. Process (2)]

在工序（2）中，將塗布液塗布於基材層的面上以形成塗布膜。In the step (2), the coating liquid is applied on the surface of the base material layer to form a coating film.

可使用任意層體作為基材層。舉例而言，亦可使用玻璃板、經離型處理的離型薄膜（例如離型聚對酞酸乙二酯（PET）薄膜）作為基材層，亦可使用前述堆疊體所包含之熱塑性樹脂層作為基材層。Any layered body can be used as the base material layer. For example, a glass plate, a release-treated release film (such as a release-type polyethylene terephthalate (PET) film) can also be used as the substrate layer, and the thermoplastic resin contained in the aforementioned stack can also be used layer as a substrate layer.

基材層良佳為前述熱塑性樹脂層，較佳為由包含含脂環結構聚合物的樹脂而成之層體，更佳為由包含環烯烴系聚合物或其氫化物的樹脂而成之層體，尤佳為由包含降𦯉烯系聚合物或其氫化物的樹脂而成之層體。The base material layer is preferably the aforementioned thermoplastic resin layer, preferably a layer made of a resin containing an alicyclic structure-containing polymer, more preferably a layer made of a resin containing a cycloolefin-based polymer or a hydrogenated product thereof , and particularly preferably a layer formed from a resin containing a noralkene-based polymer or a hydrogenated product thereof.

作為形成基材層之樹脂所得包含之含脂環結構聚合物、環烯烴系聚合物及其氫化物、降𦯉烯系聚合物及其氫化物之例及佳例，可舉出與前述減光薄膜所得包含之聚合物相同之例。Examples and preferred examples of the alicyclic structure-containing polymer, the cycloolefin-based polymer and its hydrogenated product, and the noralkene-based polymer and its hydrogenated product contained in the resin for forming the base material layer include the above-mentioned light reduction The resulting film contains the same polymer.

塗布得以任意方法進行。作為塗布方法之例，可列舉：簾塗法、擠製塗布法、輥塗法、旋塗法、浸塗法、棒塗法、噴塗法、斜板塗布法、印刷塗法、輪轉凹版塗布法、模塗法、間隙塗法及浸漬法。Coating can be performed by any method. Examples of coating methods include curtain coating, extrusion coating, roll coating, spin coating, dip coating, bar coating, spray coating, swash coating, printing coating, and rotogravure coating. , Die coating method, gap coating method and dipping method.

塗布膜的厚度因應在塗布液中之樹脂濃度、所期望之減光薄膜的厚度等適當設定即可。The thickness of the coating film may be appropriately set according to the resin concentration in the coating liquid, the desired thickness of the light-reducing film, and the like.

［3.3.工序（3）］[3.3. Process (3)]

在工序（3）中，自前述塗布膜去除前述溶媒以獲得前述減光薄膜。In the step (3), the solvent is removed from the coating film to obtain the light reduction film.

溶媒之去除得以任意方法進行。作為去除溶媒的方法之例，可列舉：自然乾燥、加熱乾燥、減壓乾燥及減壓加熱乾燥。The removal of the solvent can be carried out by any method. As an example of the method of removing a solvent, natural drying, heat drying, drying under reduced pressure, and heat drying under reduced pressure are mentioned.

只要不阻礙本發明之效果，亦可不自塗布膜完全去除溶媒。因此，藉由本製造方法而獲得之減光薄膜，只要不阻礙本發明之效果，亦可包含溶媒。良佳為減光薄膜中之溶媒的量為1重量%以下，且通常為0重量%以上，亦可為0重量%。As long as the effect of the present invention is not inhibited, the solvent may not be completely removed from the coating film. Therefore, the light reduction film obtained by the present production method may contain a solvent as long as the effect of the present invention is not inhibited. The amount of the solvent in the light reduction film is preferably 1% by weight or less, and usually 0% by weight or more, and may be 0% by weight.

［3.4.任意工序］[3.4. Arbitrary process]

減光薄膜的製造方法亦可在前述工序（1）～（3）以外包含任意工序。The manufacturing method of a light reduction film may contain arbitrary processes other than the said process (1)-(3).

作為任意工序之例，可列舉：將在工序（3）所獲得之減光薄膜自基材層剝離之工序、將在工序（3）所獲得之減光薄膜往轉印對象轉印的工序、將減光薄膜收捲的工序。Examples of the arbitrary steps include: a step of peeling the light-reducing film obtained in the step (3) from the base material layer, a step of transferring the light-reducing film obtained in the step (3) to a transfer object, The process of winding the light reduction film.

［4.堆疊體的製造方法］[4. Manufacturing method of stacked body]

前述堆疊體可藉由任意方法製造。舉例而言，在包含前述工序（1）～（3）的減光薄膜的製造方法中，可藉由使用熱塑性樹脂層作為基材層來製造堆疊體。並且，可藉由進行多次工序（2）及工序（3），在基材層（熱塑性樹脂層）的兩面上形成塗布膜，獲得具備第一減光薄膜與第二減光薄膜的堆疊體。The aforementioned stacked body can be manufactured by any method. For example, in the method for producing a light reduction film including the aforementioned steps (1) to (3), a stacked body can be produced by using a thermoplastic resin layer as a base material layer. Furthermore, by performing the steps (2) and (3) a plurality of times, a coating film is formed on both surfaces of the base material layer (thermoplastic resin layer) to obtain a stack including the first light-reducing film and the second light-reducing film .

再者，堆疊體的製造方法亦可包含工序（1）～（3）以外的任意工序。作為此種任意工序，可舉出將藉由工序（1）～（3）而獲得之堆疊體延伸的工序。In addition, the manufacturing method of a stacked body may include arbitrary processes other than processes (1)-(3). As such an arbitrary process, the process of extending|stretching the stack obtained by the process (1)-(3) is mentioned.

『實施例』"Example"

以下揭示實施例以具體說明本發明。惟本發明並非受限於以下所示之實施例者，在未脫離本發明之申請專利範圍及其均等之範圍的範圍中得任意變更實施。The following examples are disclosed to specifically illustrate the present invention. However, the present invention is not limited to the embodiments shown below, and can be arbitrarily modified and implemented without departing from the scope of the patent application of the present invention and the scope of its equivalents.

在以下説明中，表示量的「%」及「份」，除非另有註記，否則為重量基準。並且，於以下說明之操作，除非另有註記，否則係在常溫及常壓的條件下進行。In the following description, "%" and "part" indicating the amount are based on weight unless otherwise noted. In addition, the operation described below was carried out under the conditions of normal temperature and normal pressure unless otherwise noted.

［評價方法］[Evaluation method]

（減光薄膜的直線穿透率）(Linear transmittance of light reduction film)

使用分光光度計（日本分光公司製「V-570」），在波長400 nm以上且700 nm以下的範圍中，對減光薄膜量測光的直線穿透率。Using a spectrophotometer (“V-570” manufactured by JASCO Corporation), the linear transmittance of light in the light-reducing film was measured in the wavelength range of 400 nm or more and 700 nm or less.

（霧度值）(Haze value)

遵循JIS K7136，利用霧度計（日本電色工業公司製「NDH 4000」）對減光薄膜量測霧度值。According to JIS K7136, the haze value of the light-reducing film was measured with a haze meter (“NDH 4000” manufactured by Nippon Denshoku Industries Co., Ltd.).

（減光薄膜的厚度）(thickness of light reduction film)

將離型PET薄膜上的減光薄膜的一部分（5 mm見方左右）自離型PET薄膜剝離，利用微細形狀量測装置（小坂研究所製「Surfcorder ET-4000A」）量測離型PET薄膜表面與減光薄膜表面的段差形狀，量測減光薄膜的厚度。在將減光薄膜形成於基材層上的情形中，利用測微計（三豐公司製「MDC-25MJ」）量測減光薄膜及基材層的總厚，減去基材層厚求得減光薄膜的厚度。A part of the light-reducing film (about 5 mm square) on the release PET film is peeled off from the release PET film, and the surface of the release PET film is measured with a micro-shape measuring device ("Surfcorder ET-4000A" manufactured by Kosaka Laboratory) Measure the thickness of the light-reducing film based on the step shape of the surface of the light-reducing film. When the light reduction film is formed on the base material layer, the total thickness of the light reduction film and the base material layer is measured with a micrometer (“MDC-25MJ” manufactured by Mitutoyo Corporation), and the thickness of the base material layer is subtracted. The thickness of the light-reducing film is obtained.

（在CIE 1976（L*, a*, b*）色空間中之b*值）(b* value in CIE 1976 (L*, a*, b*) color space)

利用色度計（Suga Test Instruments Co., Ltd.製「SC-T」）量測。Measured with a colorimeter (“SC-T” manufactured by Suga Test Instruments Co., Ltd.).

［製造例1］[Manufacturing Example 1]

（P1-1.氫化嵌段共聚物（氫化芳族乙烯化合物－共軛二烯嵌段共聚物）的製造）(P1-1. Production of hydrogenated block copolymer (hydrogenated aromatic vinyl compound-conjugated diene block copolymer))

使用苯乙烯作為芳族乙烯化合物，使用異戊二烯作為鏈狀共軛二烯化合物，藉由以下的程序製造嵌段共聚物的氫化物（氫化嵌段共聚物）。所製造的嵌段共聚物的氫化物具有在聚合物嵌段［B］的兩端鍵結有聚合物嵌段［A］的三嵌段結構。Using styrene as an aromatic vinyl compound and using isoprene as a chain conjugated diene compound, a hydrogenated product of a block copolymer (hydrogenated block copolymer) was produced by the following procedure. The produced hydrogenated product of the block copolymer has a triblock structure in which the polymer block [A] is bonded to both ends of the polymer block [B].

於內部以氮氣充分置換之具備攪拌裝置的反應器加入脫水環己烷256份、脫水苯乙烯25.0份及二正丁醚0.615份，在60℃下攪拌，同時加入正丁基鋰（15%環己烷溶液）1.35份使聚合開始，進一步在攪拌的同時在60℃下使之反應60分鐘。在此時間點之聚合轉化率為99.5%（聚合轉化率以氣相層析法來量測。下同。）。256 parts of dehydrated cyclohexane, 25.0 parts of dehydrated styrene, and 0.615 parts of di-n-butyl ether were added to a reactor equipped with a stirring device, which was fully replaced with nitrogen, and stirred at 60°C while adding n-butyllithium (15% cyclohexane). 1.35 parts of hexane solution) to start polymerization, and it was made to react at 60 degreeC for 60 minutes, stirring further. The polymerization conversion rate at this time point was 99.5% (polymerization conversion rate was measured by gas chromatography. The same below).

其次，加入脫水異戊二烯50.0份，在同一溫度下繼續攪拌30分鐘。在此時間點之聚合轉化率為99%。Next, 50.0 parts of dehydrated isoprene was added, and stirring was continued for 30 minutes at the same temperature. The polymerization conversion at this time point was 99%.

之後，進一步加入脫水苯乙烯25.0份，在同一溫度下攪拌60分鐘。在此時間點之聚合轉化率為幾乎100%。Then, 25.0 parts of dehydrated styrene was further added, and it stirred at the same temperature for 60 minutes. The polymerization conversion at this time point was almost 100%.

接下來，於反應液加入異丙醇0.5份使反應終止，獲得包含嵌段共聚物的溶液（i）。Next, 0.5 part of isopropyl alcohol was added to the reaction liquid to terminate the reaction, and a solution (i) containing a block copolymer was obtained.

所獲得之溶液（i）中的嵌段共聚物的重量平均分子量（Mw）為44,900，分子量分布（Mw／Mn）為1.03（利用以四氫呋喃為溶媒的凝膠滲透層析法，以聚苯乙烯換算之值的形式量測。下同）。The weight-average molecular weight (Mw) of the block copolymer in the obtained solution (i) was 44,900, and the molecular weight distribution (Mw/Mn) was 1.03 (by gel permeation chromatography using tetrahydrofuran as a solvent, using polystyrene as a solvent). Measured in the form of the converted value. The same below).

其次，將溶液（i）轉移至具備攪拌裝置的耐壓反應器，於溶液（i）添加作為氫化觸媒的矽氧化物－鋁氧化物負載型鎳觸媒（E22U，鎳負載量60%；日揮化學工業公司製）4.0份及脫水環己烷350份並混合之。以氫氣置換反應器內部，進一步一邊攪拌溶液一邊供應氫，藉由在溫度170℃、壓力4.5 MPa下進行6小時氫化反應，將嵌段共聚物氫化，獲得包含嵌段共聚物之氫化物（ii）的溶液（iii）。溶液（iii）中之氫化物（ii）的重量平均分子量（Mw）為45,100，分子量分布（Mw／Mn）為1.04。Next, the solution (i) was transferred to a pressure-resistant reactor equipped with a stirring device, and a silicon oxide-aluminum oxide supported nickel catalyst (E22U, nickel loading 60%) was added to the solution (i) as a hydrogenation catalyst; Nippon Chemical Industry Co., Ltd.) 4.0 parts and 350 parts of dehydrated cyclohexane were mixed. The inside of the reactor was replaced with hydrogen, and hydrogen was supplied while stirring the solution, and the block copolymer was hydrogenated by hydrogenation at a temperature of 170° C. and a pressure of 4.5 MPa for 6 hours to obtain a hydrogenated product (ii) containing the block copolymer. ) of solution (iii). The weight average molecular weight (Mw) of the hydride (ii) in the solution (iii) was 45,100, and the molecular weight distribution (Mw/Mn) was 1.04.

氫化反應結束後，將溶液（iii）過濾去除氫化觸媒。之後，於經過濾之溶液（iii）添加溶解有係為磷系抗氧化劑的6-[3-(3-三級丁基-4-羥基-5-甲基苯基)丙氧基]-2,4,8,10-肆(三級丁基)二苯并[d,f][1.3.2]二氧磷呯（住友化學公司製「Sumilizer（註冊商標）GP」。以下稱為「抗氧化劑A」。）0.1份的二甲苯溶液1.0份並使之溶解，獲得溶液（iv）。After the hydrogenation reaction was completed, the solution (iii) was filtered to remove the hydrogenation catalyst. Then, 6-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propoxy]-2 which is a phosphorus-based antioxidant dissolved in the filtered solution (iii) was added ,4,8,10-Di(tertiary butyl)dibenzo[d,f][1.3.2]dioxophosphorus ("Sumilizer (registered trademark) GP" manufactured by Sumitomo Chemical Co., Ltd.). Hereinafter referred to as "anti- Oxidant A".) 1.0 part of a xylene solution of 0.1 part was dissolved, and a solution (iv) was obtained.

接下來，利用ZetaPlus（註冊商標）過濾器30H（CUNO公司製，孔徑0.5 μm~1 μm)將溶液（iv）過濾，再以另一個金屬纖維製過濾器（孔徑0.4 μm，Nichidai Corporation製）依序過濾去除微小的固體成分。使用圓筒型濃縮乾燥器（製品名「Kontro」、日立製作所公司製），在溫度260℃、壓力0.001 MPa以下，自經過濾的溶液（iv）去除係為溶媒之環己烷、二甲苯及其他揮發成分。然後，自直接連結於前述濃縮乾燥器的模具，將固體成分在溶融狀態下擠製成股狀並冷卻、以造粒機切割，獲得含有嵌段共聚物之氫化物及抗氧化劑A的顆粒（v）85份。所獲得之顆粒（v）中的嵌段共聚物之氫化物（氫化嵌段共聚物）的重量平均分子量（Mw）為45,000、分子量分布（Mw／Mn）為1.08。並且，利用 1H-NMR量測之氫化率為99.9%。 Next, the solution (iv) was filtered using a ZetaPlus (registered trademark) filter 30H (manufactured by CUNO Corporation, pore size 0.5 μm to 1 μm), and then filtered through another metal fiber filter (pore size 0.4 μm, manufactured by Nichidai Corporation) Sequential filtration to remove minute solids. Cyclohexane, xylene, and cyclohexane, which are solvents, were removed from the filtered solution (iv) at a temperature of 260°C and a pressure of 0.001 MPa or less using a cylindrical concentration dryer (product name "Kontro", manufactured by Hitachi, Ltd.). other volatile components. Then, from the mold directly connected to the aforementioned concentration dryer, the solid content was extruded into strands in a molten state, cooled, and cut with a pelletizer to obtain pellets containing the hydrogenated product of the block copolymer and antioxidant A ( v) 85 servings. The weight average molecular weight (Mw) of the hydrogenated product of the block copolymer (hydrogenated block copolymer) in the obtained particle (v) was 45,000, and the molecular weight distribution (Mw/Mn) was 1.08. In addition, the hydrogenation rate measured by 1 H-NMR was 99.9%.

自此顆粒（v）製作薄膜狀的試片，以動態黏彈性量測裝置之tanδ尖峰評價玻璃轉移溫度Tg，結果為130℃。A film-like test piece was prepared from this particle (v), and the glass transition temperature Tg was evaluated by the tanδ peak of the dynamic viscoelasticity measuring device, and the result was 130°C.

（P2-1.氫化嵌段共聚物之矽烷改質物的製造）(P2-1. Manufacture of silane-modified product of hydrogenated block copolymer)

對在（P1-1）獲得之顆粒（v）100份添加乙烯基三甲氧基矽烷2.0份及過氧化二(三級丁基)0.2份，獲得混合物。使用雙軸擠製機，將此混合物在料桶溫度210℃、滯留時間80秒～90秒之下加以混練。將經混練之混合物擠製、以造粒機切割獲得氫化嵌段共聚物之矽烷改質物的顆粒（vi）。自此顆粒（vi）製作薄膜狀的試片，以動態黏彈性量測裝置之tanδ尖峰評價玻璃轉移溫度Tg，結果為124℃。To 100 parts of particles (v) obtained in (P1-1), 2.0 parts of vinyltrimethoxysilane and 0.2 parts of di(tertiary butyl) peroxide were added to obtain a mixture. Using a biaxial extruder, the mixture was kneaded at a barrel temperature of 210°C and a residence time of 80 to 90 seconds. The kneaded mixture is extruded and cut with a pelletizer to obtain pellets (vi) of the silane modification of the hydrogenated block copolymer. A film-like test piece was produced from this particle (vi), and the glass transition temperature Tg was evaluated by the tanδ peak of the dynamic viscoelasticity measuring device, and the result was 124°C.

［實施例1］[Example 1]

於環己烷100份混合油溶性染料（Oil Black 860，Orient Chemical Industries Co., Ltd.）0.2份，施加超音波10分鐘使油溶性染料溶解於環己烷，接下來以5 μm的過濾器過濾，獲得染料溶液。於所獲得之染料溶液80份加入包含環烯烴系開環聚合物氫化物的樹脂（日本瑞翁公司製「ZEONOR 1430」）20份並使之溶解，獲得包含樹脂及油溶性染料之黑色的塗布液。0.2 part of an oil-soluble dye (Oil Black 860, Orient Chemical Industries Co., Ltd.) was mixed with 100 parts of cyclohexane, and ultrasonic waves were applied for 10 minutes to dissolve the oil-soluble dye in cyclohexane, followed by a 5 μm filter. Filter to obtain dye solution. To 80 parts of the obtained dye solution, 20 parts of a resin containing a hydrogenated cycloolefin-based ring-opening polymer (“ZEONOR 1430” manufactured by Zeon Corporation) was added and dissolved to obtain a black coating containing the resin and an oil-soluble dye. liquid.

將此塗布液以塗布器塗布在離型PET薄膜（東山薄膜公司製「HY-S10」）之一側的面上，形成塗布膜。This coating liquid was apply|coated to the surface of one side of the release PET film ("HY-S10" by Higashiyama Film Co., Ltd.) by the coater, and the coating film was formed.

使塗布膜在100℃的烘箱中乾燥10分鐘以去除溶媒，獲得減光薄膜。利用前述方法量測所獲得之減光薄膜的厚度，結果為6 μm。The coated film was dried in an oven at 100° C. for 10 minutes to remove the solvent, and a light-reducing film was obtained. The thickness of the obtained light-reducing film was measured by the aforementioned method, and the result was 6 μm.

將減光薄膜自離型PET薄膜剝下並量測光學特性，結果b*值為－7.2，直線穿透率為480 nm：75%、550 nm：61%、610 nm：63%。霧度為0.1%。減光薄膜具有在組裝於顯示器的情形中不損及畫面清晰度之程度的性能。The light-reducing film was peeled off from the release PET film and the optical properties were measured. As a result, the b* value was -7.2, and the linear transmittance was 480 nm: 75%, 550 nm: 61%, and 610 nm: 63%. The haze was 0.1%. The light-reducing film has properties to such an extent that the clarity of the picture is not impaired when assembled in a display.

［實施例2］[Example 2]

以減光薄膜的厚度成為10 μm的方式調整塗布器的縫隙變更塗布膜的厚度。除以上事項以外，比照實施例1操作，獲得減光薄膜，比照實施例1量測厚度及光學特性。減光薄膜的b*值為－10，直線穿透率為480 nm：70%、550 nm：51%、610 nm：53%。霧度為0.1%。減光薄膜具有在組裝於顯示器的情形中不損及畫面清晰度之程度的性能。The thickness of the coating film was changed by adjusting the gap of the coater so that the thickness of the light reduction film was 10 μm. Except for the above matters, the operation was carried out in accordance with Example 1 to obtain a light-reducing film, and the thickness and optical properties were measured in accordance with Example 1. The b* value of the light-reducing film is -10, and the linear transmittance is 480 nm: 70%, 550 nm: 51%, and 610 nm: 53%. The haze was 0.1%. The light-reducing film has properties to such an extent that the clarity of the picture is not impaired when assembled in a display.

並且，將塗布液以塗布器塗布在作為基材層及熱塑性樹脂層的樹脂薄膜（日本瑞翁公司製「ZF14薄膜」，厚度100 μm，由包含環烯烴系聚合物氫化物的樹脂而成、具有透光性的薄膜）之一側的面上，獲得塗布膜。Then, the coating liquid was applied with a coater on a resin film (“ZF14 film” manufactured by Zeon Corporation, Japan, thickness 100 μm, made of a resin containing a cyclic olefin-based polymer hydride, which is a base material layer and a thermoplastic resin layer). A coating film is obtained on one side of a light-transmitting film).

使塗布膜在100℃的烘箱中乾燥10分鐘以去除溶媒，獲得具備減光薄膜與ZF14薄膜的堆疊體。堆疊體具有在作為具有透光性之熱塑性樹脂層的ZF14薄膜之一側的面上直接配置減光薄膜的構造。The coating film was dried in an oven at 100° C. for 10 minutes to remove the solvent to obtain a stack including the light-reducing film and the ZF14 film. The stacked body has a structure in which a light-reducing film is directly arranged on the surface of one side of the ZF14 film, which is a thermoplastic resin layer having translucency.

利用前述方法量測在堆疊體中之減光薄膜的厚度，結果為10 μm。所獲得之堆疊體的霧度為0.1%，堆疊體幾乎未觀察到捲曲。The thickness of the light-reducing film in the stack was measured by the aforementioned method and found to be 10 μm. The haze of the obtained stack was 0.1%, and curl was hardly observed in the stack.

［實施例3］[Example 3]

於甲苯33份混合油溶性染料（Oil Black 860，Orient Chemical Industries Co., Ltd.）0.1份，施加超音波10分鐘使油溶性染料溶解於甲苯，獲得染料溶液。於所獲得之染料溶液加入在製造例1製造之作為樹脂的氫化嵌段共聚物之矽烷改質物的顆粒（vi）10份並使之溶解，獲得包含樹脂及油溶性染料之黑色的塗布液。0.1 part of an oil-soluble dye (Oil Black 860, Orient Chemical Industries Co., Ltd.) was mixed with 33 parts of toluene, and ultrasonic waves were applied for 10 minutes to dissolve the oil-soluble dye in toluene to obtain a dye solution. To the obtained dye solution, 10 parts of particles (vi) of the silane-modified substance of the hydrogenated block copolymer of resin produced in Production Example 1 were added and dissolved to obtain a black coating liquid containing a resin and an oil-soluble dye.

將此塗布液以塗布器塗布在離型PET薄膜（東山薄膜公司製「HY-S10」）之一側的面上，形成塗布膜。This coating liquid was apply|coated to the surface of one side of the release PET film ("HY-S10" by Higashiyama Film Co., Ltd.) by the coater, and the coating film was formed.

使塗布膜在100℃的烘箱中乾燥10分鐘以去除溶媒，獲得減光薄膜。利用前述方法量測所獲得之減光薄膜的厚度，結果為10 μm。The coated film was dried in an oven at 100° C. for 10 minutes to remove the solvent, and a light-reducing film was obtained. The thickness of the obtained light-reducing film was measured by the aforementioned method, and the result was 10 μm.

將減光薄膜自離型PET薄膜剝下並量測光學特性，結果b*值為－10，直線穿透率為480 nm：66%、550 nm：50%、610 nm：50%。霧度為0.1%。減光薄膜具有在組裝於顯示器的情形中不損及畫面清晰度之程度的性能。The light-reducing film was peeled off from the release PET film and the optical properties were measured. As a result, the b* value was -10, and the linear transmittance was 480 nm: 66%, 550 nm: 50%, and 610 nm: 50%. The haze was 0.1%. The light-reducing film has properties to such an extent that the clarity of the picture is not impaired when assembled in a display.

並且，將塗布液以塗布器塗布在作為基材層及熱塑性樹脂層的樹脂薄膜（日本瑞翁公司製「ZF14薄膜」，厚度50 μm，由包含環烯烴系聚合物氫化物的樹脂而成、具有透光性的薄膜）之一側的面上，獲得塗布膜。Then, the coating liquid was applied with a coater on a resin film (“ZF14 film” manufactured by Zeon Corporation, Japan, thickness 50 μm, made of a resin containing a cyclic olefin polymer hydride, which is a base material layer and a thermoplastic resin layer, A coating film is obtained on one side of a light-transmitting film).

使塗布膜在100℃的烘箱中乾燥10分鐘以去除溶媒，獲得具備減光薄膜與ZF14薄膜的堆疊體。堆疊體具有在作為具有透光性之熱塑性樹脂層的ZF14薄膜之一側的面上直接配置減光薄膜的構造。The coating film was dried in an oven at 100° C. for 10 minutes to remove the solvent to obtain a stack including the light-reducing film and the ZF14 film. The stacked body has a structure in which a light-reducing film is directly arranged on the surface of one side of the ZF14 film, which is a thermoplastic resin layer having translucency.

利用前述方法量測在堆疊體中之減光薄膜的厚度，結果為10 μm。所獲得之堆疊體的霧度為0.1%，堆疊體幾乎未觀察到捲曲。The thickness of the light-reducing film in the stack was measured by the aforementioned method and found to be 10 μm. The haze of the obtained stack was 0.1%, and curl was hardly observed in the stack.

［實施例4］[Example 4]

以減光薄膜的厚度成為15 μm的方式調整塗布器的縫隙變更塗布膜的厚度。除以上事項以外，比照實施例1操作，獲得減光薄膜，比照實施例1量測厚度及光學特性。減光薄膜的b*值為－20，直線穿透率為480 nm：57%、550 nm：32%、610 nm：36%。霧度為0.1%。減光薄膜具有在組裝於顯示器的情形中不損及畫面清晰度之程度的性能。The thickness of the coating film was changed by adjusting the gap of the coater so that the thickness of the light reduction film was 15 μm. Except for the above matters, the operation was carried out in accordance with Example 1 to obtain a light-reducing film, and the thickness and optical properties were measured in accordance with Example 1. The b* value of the light-reducing film is -20, and the linear transmittance is 480 nm: 57%, 550 nm: 32%, and 610 nm: 36%. The haze was 0.1%. The light-reducing film has properties to such an extent that the clarity of the picture is not impaired when assembled in a display.

並且，將塗布液以塗布器塗布在作為基材層及熱塑性樹脂層的樹脂薄膜（日本瑞翁公司製「ZF14薄膜」，厚度150 μm，由包含環烯烴系聚合物氫化物的樹脂而成、具有透光性的薄膜）之一側的面上，獲得塗布膜。Then, the coating liquid was applied with a coater on a resin film (“ZF14 film” manufactured by Zeon Corporation, Japan, thickness 150 μm, made of a resin containing a cyclic olefin-based polymer hydride, which is a base material layer and a thermoplastic resin layer). A coating film is obtained on one side of a light-transmitting film).

使塗布膜在100℃的烘箱中乾燥10分鐘以去除溶媒，獲得具備減光薄膜與ZF14薄膜的堆疊體。堆疊體具有在作為具有透光性之熱塑性樹脂層的ZF14薄膜之一側的面上直接配置減光薄膜的構造。The coating film was dried in an oven at 100° C. for 10 minutes to remove the solvent to obtain a stack including the light-reducing film and the ZF14 film. The stacked body has a structure in which a light-reducing film is directly arranged on the surface of one side of the ZF14 film, which is a thermoplastic resin layer having translucency.

利用前述方法量測在堆疊體中之減光薄膜的厚度，結果為10 μm。所獲得之堆疊體的霧度為0.1%，堆疊體幾乎未觀察到捲曲。The thickness of the light-reducing film in the stack was measured by the aforementioned method and found to be 10 μm. The haze of the obtained stack was 0.1%, and curl was hardly observed in the stack.

［實施例5］[Example 5]

使用Oil Black 803（Orient Chemical Industries Co., Ltd.）取代Oil Black 860作為油溶性染料。並且，以減光薄膜的厚度成為10 μm的方式調整塗布器的縫隙變更塗布膜的厚度。Oil Black 803 (Orient Chemical Industries Co., Ltd.) was used instead of Oil Black 860 as the oil-soluble dye. Then, the thickness of the coating film was changed by adjusting the gap of the coater so that the thickness of the light reduction film was 10 μm.

除以上事項以外，比照實施例1操作，獲得減光薄膜，比照實施例1量測厚度及光學特性。減光薄膜的b*值為－2.8，直線穿透率為480 nm：69%、550 nm：64%、610 nm：63%。霧度為0.1%。減光薄膜具有在組裝於顯示器的情形中不損及畫面清晰度之程度的性能。Except for the above matters, the operation was carried out in accordance with Example 1 to obtain a light-reducing film, and the thickness and optical properties were measured in accordance with Example 1. The b* value of the light-reducing film is -2.8, and the linear transmittance is 480 nm: 69%, 550 nm: 64%, and 610 nm: 63%. The haze was 0.1%. The light-reducing film has properties to such an extent that the clarity of the picture is not impaired when assembled in a display.

［實施例6］[Example 6]

使用Oil Black HBB（Orient Chemical Industries Co., Ltd.）取代Oil Black 860作為油溶性染料。並且，以減光薄膜的厚度成為10 μm的方式調整塗布器的縫隙變更塗布膜的厚度。Oil Black HBB (Orient Chemical Industries Co., Ltd.) was used instead of Oil Black 860 as the oil-soluble dye. Then, the thickness of the coating film was changed by adjusting the gap of the coater so that the thickness of the light reduction film was 10 μm.

除以上事項以外，比照實施例1操作，獲得減光薄膜，比照實施例1量測厚度及光學特性。減光薄膜的b*值為－9.8，直線穿透率為480 nm：75%、550 nm：61%、610 nm：63%。霧度為0.1%。減光薄膜具有在組裝於顯示器的情形中不損及畫面清晰度之程度的性能。Except for the above matters, the operation was carried out in accordance with Example 1 to obtain a light-reducing film, and the thickness and optical properties were measured in accordance with Example 1. The b* value of the light-reducing film is -9.8, and the linear transmittance is 480 nm: 75%, 550 nm: 61%, and 610 nm: 63%. The haze was 0.1%. The light-reducing film has properties to such an extent that the clarity of the picture is not impaired when assembled in a display.

［比較例1］[Comparative Example 1]

於氧化鈦「13M-T」（粒徑67 nm，Mitsubishi Materials Corporation製）4.5份加入分散劑「Solseperse 21000」（Lubrizol Japan Limited）0.5份、環己烷95份並以塗料分散機將之分散，製作氧化鈦分散液。To 4.5 parts of titanium oxide "13M-T" (particle size: 67 nm, manufactured by Mitsubishi Materials Corporation), 0.5 part of dispersant "Solseperse 21000" (Lubrizol Japan Limited) and 95 parts of cyclohexane were added and dispersed with a paint disperser. A titanium oxide dispersion was prepared.

接下來，對在製造例1製造之作為樹脂的氫化嵌段共聚物之矽烷改質物的顆粒（vi）30份加入環己烷70份，製作樹脂溶液。於此加入氧化鈦分散液8.4份，獲得相對於樹脂包含1.3%之氧化鈦粒子的塗布液。Next, 70 parts of cyclohexane were added to 30 parts of particles (vi) of the silane-modified substance of the hydrogenated block copolymer as a resin produced in Production Example 1 to prepare a resin solution. 8.4 parts of titanium oxide dispersion liquids were added here, and the coating liquid containing 1.3% of titanium oxide particles with respect to resin was obtained.

將此包含氧化鈦粒子的塗布液以塗布器塗布在離型PET薄膜（東山薄膜公司製「HY-S10」）之一側的面上，形成塗布膜。The coating liquid containing this titanium oxide particle was apply|coated to the surface of one side of the release PET film ("HY-S10" by Higashiyama Film Co., Ltd.) by the coater, and the coating film was formed.

使塗布膜在100℃的烘箱中乾燥10分鐘以去除溶媒，獲得減光薄膜。利用前述方法量測所獲得之減光薄膜的厚度，結果為11 μm。The coated film was dried in an oven at 100° C. for 10 minutes to remove the solvent, and a light-reducing film was obtained. The thickness of the obtained light-reducing film was measured by the aforementioned method, and the result was 11 μm.

將減光薄膜自離型PET薄膜剝下並量測光學特性，結果b*值為－4，直線穿透率為480 nm：73%、550 nm：71%、610 nm：69%。霧度為8%。減光薄膜具有在組裝於顯示器的情形中會損及畫面清晰度之程度的特性。The light-reducing film was peeled off from the release PET film and the optical properties were measured. The b* value was -4, and the linear transmittance was 480 nm: 73%, 550 nm: 71%, and 610 nm: 69%. The haze was 8%. The light-reducing film has characteristics to such an extent that the clarity of the picture is impaired when assembled in a display.

結果揭示於下表。The results are disclosed in the table below.

在下表中，縮寫表示以下的意思。 「1430」：日本瑞翁公司製「Zeonor 1430」 「Si改質物」：於製造例1製造之氫化嵌段共聚物的矽烷改質物 In the table below, the abbreviations have the following meanings. "1430": "Zeonor 1430" made by Japan's Zeon Corporation "Si modified substance": silane modified substance of the hydrogenated block copolymer produced in Production Example 1

表中之著色劑濃度的項目揭示在塗布液中之著色劑（油溶性染料或氧化鈦粒子）相對於樹脂的比例（%）。The item of the coloring agent concentration in the table shows the ratio (%) of the coloring agent (oil-soluble dye or titanium oxide particles) to the resin in the coating liquid.

『表1』   實施例 1 實施例 2 實施例 3 實施例 4 實施例 5 實施例 6 比較例 1 著色劑 Oil Black 860 Oil Black 860 Oil Black 860 Oil Black 860 Oil Black 803 Oil Black HBB 13M-T 樹脂 1430 1430 Si 改質物 1430 1430 1430 Si 改質物 著色劑濃度 0.8% 0.8% 1.0% 0.8% 0.8% 0.8% 1.3% 減光薄膜厚度 6 μm 10 μm 10 μm 15 μm 10 μm 10 μm 11 μm b* −7.2 −10 −10 −20 −2.8 −9.8 −4 480 nm 穿透率(%) 75 70 66 57 69 75 73 550 nm 穿透率(%) 61 51 50 32 64 61 71 610 nm 穿透率(%) 63 53 50 36 63 63 69 霧度 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 8% "Table 1" Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Comparative Example 1 Colorant Oil Black 860 Oil Black 860 Oil Black 860 Oil Black 860 Oil Black 803 Oil Black HBB 13M-T resin 1430 1430 Si modifier 1430 1430 1430 Si modification Colorant concentration 0.8% 0.8% 1.0% 0.8% 0.8% 0.8% 1.3% Light Reduction Film Thickness 6 μm 10 μm 10 μm 15 μm 10 μm 10 μm 11 μm b* −7.2 −10 −10 −20 −2.8 −9.8 −4 480 nm transmittance (%) 75 70 66 57 69 75 73 550 nm transmittance (%) 61 51 50 32 64 61 71 610 nm transmittance (%) 63 53 50 36 63 63 69 haze 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 8%

由以上結果可知以下事項。From the above results, the following matters were found.

不含油溶性染料的比較例1相關之減光薄膜，其霧度相較於實施例1～6相關之減光薄膜要來得顯著高。The haze of the light-reducing film related to Comparative Example 1, which does not contain oil-soluble dyes, is significantly higher than that of the light-reducing films related to Examples 1-6.

另一方面，實施例相關之減光薄膜之霧度小，具有在組裝於顯示器的情形中不損及畫面清晰度之程度的性能。On the other hand, the haze of the light-reducing film according to the embodiment is small, and it has a performance to such an extent that the clarity of the picture is not impaired when it is assembled in a display.

100:堆疊體 110:減光薄膜 120:熱塑性樹脂層 120U:面 200:堆疊體 210:第一減光薄膜 220:熱塑性樹脂層 220U:面 220D:面 230:第二減光薄膜 100: stack 110: Light reduction film 120: thermoplastic resin layer 120U: Noodles 200: stack 210: The first light reduction film 220: thermoplastic resin layer 220U: Noodles 220D: face 230: Second light reduction film

《圖1》圖1係繪示本發明之實施形態1相關之堆疊體的剖面示意圖。«FIG. 1» FIG. 1 is a schematic cross-sectional view of a stacked body according to Embodiment 1 of the present invention.

《圖2》圖2係繪示本發明之實施形態2相關之堆疊體的剖面示意圖。"FIG. 2" FIG. 2 is a schematic cross-sectional view of a stacked body according to Embodiment 2 of the present invention.

100:堆疊體 100: stack

110:減光薄膜 110: Light reduction film

120:熱塑性樹脂層 120: thermoplastic resin layer

120U:面 120U: Noodles

Claims (8)

一種減光薄膜，其包含樹脂、油溶性染料，厚度為1 μm以上且未滿100 μm，在CIE 1976（L*, a*, b*）色空間中之b*值未達0。A light-reducing film, which contains resin and oil-soluble dye, has a thickness of 1 μm or more and less than 100 μm, and has a b* value of less than 0 in the CIE 1976 (L*, a*, b*) color space. 如請求項1所述之減光薄膜，其中前述油溶性染料相對於前述樹脂的比例為0.01重量%以上且未達2重量%。The light-reducing film according to claim 1, wherein the ratio of the oil-soluble dye to the resin is 0.01% by weight or more and less than 2% by weight. 如請求項1或2所述之減光薄膜，其中前述樹脂包含含脂環結構聚合物。The light-reducing film according to claim 1 or 2, wherein the resin comprises an alicyclic structure-containing polymer. 如請求項3所述之減光薄膜，其中前述含脂環結構聚合物為環烯烴系聚合物或其氫化物。The light-reducing film according to claim 3, wherein the alicyclic structure-containing polymer is a cycloolefin-based polymer or a hydrogenated product thereof. 如請求項1或2所述之減光薄膜，其波長550 nm之光的直線穿透率為25%以上且85%以下。The light-reducing film according to claim 1 or 2 has a linear transmittance of light with a wavelength of 550 nm of 25% or more and 85% or less. 如請求項1或2所述之減光薄膜，其波長480 nm之光的直線穿透率比波長610 nm之光的直線穿透率大。The light-reducing film according to claim 1 or 2 has a linear transmittance of light with a wavelength of 480 nm greater than that of light with a wavelength of 610 nm. 一種堆疊體，其包含如請求項1至6之任一項所述之減光薄膜與具有透光性之熱塑性樹脂層，前述減光薄膜直接配置於前述熱塑性樹脂層的面。A stacked body comprising the light-reducing film according to any one of claims 1 to 6 and a light-transmitting thermoplastic resin layer, wherein the light-reducing film is directly disposed on the surface of the thermoplastic resin layer. 一種減光薄膜的製造方法，其係如請求項1至6之任一項所述之減光薄膜的製造方法，其包含：準備包含前述樹脂、前述油溶性染料及溶媒之塗布液的工序、將前述塗布液塗布於基材層的面上形成塗布膜的工序，以及自前述塗布膜去除前述溶媒獲得前述減光薄膜的工序。A method for producing a light-reducing film, which is the method for producing a light-reducing film as described in any one of claims 1 to 6, comprising: a step of preparing a coating solution comprising the aforementioned resin, the aforementioned oil-soluble dye, and a solvent, The step of applying the coating liquid to the surface of the base material layer to form a coating film, and the step of removing the solvent from the coating film to obtain the light-reducing film.
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