TW201831628A - Surface protection film - Google Patents
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- TW201831628A TW201831628A TW106145369A TW106145369A TW201831628A TW 201831628 A TW201831628 A TW 201831628A TW 106145369 A TW106145369 A TW 106145369A TW 106145369 A TW106145369 A TW 106145369A TW 201831628 A TW201831628 A TW 201831628A
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/023—Optical properties
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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
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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
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
本發明是有關於一種附分離件之光學用表面保護薄膜。尤其可將用於保護光學構件(例如使用在液晶顯示器等之偏光板、波長板、相位差板、光學補償薄膜、反射片、增亮薄膜等)表面的附分離件之光學用表面保護薄膜對前述光學構件表面正確地調整位置，且於調整位置後剝離分離件，而可以正確的位置將光學用表面保護薄膜貼合於光學構件表面，乃屬有用。The present invention relates to an optical surface protection film with a separator. In particular, the optical surface protection film with a separator for protecting the surface of an optical member (for example, a polarizing plate, a wavelength plate, a retardation plate, an optical compensation film, a reflection sheet, a brightness enhancement film, etc.) used for a liquid crystal display, etc. It is useful to adjust the position of the surface of the optical member correctly, and peel off the separator after the adjustment, so that the optical surface protection film can be attached to the surface of the optical member at the correct position.
背景技術 表面保護薄膜一般是具有在薄膜狀的基材薄膜(支持體)上設置有黏著劑層之構成。所述表面保護薄膜是透過前述黏著劑層貼合在為被附體之光學構件上，藉此以保護光學構件在加工、輸送、檢查時等時其表面不會出現傷痕或髒污為目的而使用。例如，液晶顯示器的面板即是透過黏著劑層將偏光板或波長板等之光學構件貼合在液晶單元而形成。所述黏著劑層直到實際被貼合在光學構件之前，從進行保護以免乾燥等之必要性來說，是藉由經過脫模處理的分離件等來作保護、保管(專利文獻1)。BACKGROUND ART A surface protection film generally has a configuration in which an adhesive layer is provided on a film-like base film (support). The surface protection film is adhered to the optical member as an adherend through the aforementioned adhesive layer, so as to protect the surface of the optical member from scratches or dirt during processing, transportation, inspection, etc. use. For example, a liquid crystal display panel is formed by bonding an optical member such as a polarizing plate or a wavelength plate to a liquid crystal cell through an adhesive layer. Until the adhesive layer is actually attached to the optical member, it is protected and stored by a release or the like subjected to a release treatment from the necessity of protecting it from drying (Patent Document 1).
之後，實際將前述表面保護薄膜的黏著劑層表面貼附在光學構件並使用後，該表面保護薄膜即會在不需要的階段被剝離、去除。After that, after the surface of the adhesive layer of the surface protection film is actually attached to the optical member and used, the surface protection film is peeled and removed at an unnecessary stage.
先行技術文献 專利文獻 專利文獻1：日本特開2012-224811Prior technical documents Patent documents Patent document 1: Japanese Patent Application Laid-Open No. 2012-224811
發明概要 發明欲解決之課題 又，於光學構件表面貼合附分離件之表面保護薄膜時，為了在正確的位置貼合，係以不切斷分離件之方式僅將表面保護薄膜裁切成所期望之大小，並在分離件外縁開孔，然後以感測器感知該開孔部分並用自動貼合機調整位置，接著在剝離分離件後再貼合於光學構件表面。Summary of the Invention The problem to be solved by the invention is that when a surface protection film with a separator is attached to the surface of an optical member, the surface protection film is cut into only Desired size, make a hole in the outer part of the separator, then detect the part of the hole with a sensor and adjust the position with an automatic bonding machine, and then adhere to the surface of the optical member after peeling the separator.
然，即便欲使用通常使用之透明的附分離件之表面保護薄膜於光學構件上正確地調整位置，仍無法正確地感知開孔部分而產生偏移，則於剝離附分離件之表面保護薄膜之分離件並貼附至光學構件時，會產生無法以正確位置貼附等之不良情況，造成問題。However, even if it is necessary to use the transparent surface protection film with a separate member to adjust the position on the optical member correctly, the perforated part cannot be correctly sensed, and the offset may occur. When a separate piece is attached to an optical member, problems such as failure to attach it at the correct position may occur, causing problems.
因此，本發明人等有鑒於上述情形而努力研究之結果，其目的在於提供一種附分離件之光學用表面保護薄膜，係在對著光學構件使用自動貼合機調整附分離件之光學用表面保護薄膜之位置，並於剝離分離件後貼合於光學構件表面時，具優異之利用分離件之位置調整性，而可於光學構件表面以正確位置進行貼附。Therefore, the present inventors have made researches in view of the above circumstances, and an object thereof is to provide an optical surface protection film with a separator, which is used to adjust an optical surface with a separator using an automatic bonding machine against an optical member. When the position of the protective film is adhered to the surface of the optical member after the separation member is peeled off, it has excellent position adjustment using the separation member, and can be attached at the correct position on the surface of the optical member.
用以解決課題之手段 即，本發明之附分離件之光學用表面保護薄膜具有光學用表面保護薄膜及分離件，該光學用表面保護薄膜係於基材薄膜的至少單面具有黏著劑層者，且該分離件位於前述基材薄膜之與黏著劑層接觸之面為相反之面上；該附分離件之光學用表面保護薄膜之特徵在於：前述分離件具有脫模層與基材，前述分離件之霧度在90%以上，且全光線透射率在50%以下。The means for solving the problem is that the optical surface protective film with a separator of the present invention includes an optical surface protective film and a separator, and the optical surface protective film has an adhesive layer on at least one side of a substrate film. And the separator is located on the opposite side of the substrate film that is in contact with the adhesive layer; the optical surface protection film with the separator is characterized in that the separator has a release layer and a substrate, and The haze of the separator is above 90%, and the total light transmittance is below 50%.
本發明之附分離件之光學用表面保護薄膜中，前述基材薄膜宜為聚酯薄膜。In the optical surface protection film with a separator of the present invention, the substrate film is preferably a polyester film.
本發明之附分離件之光學用表面保護薄膜中，前述黏著劑層宜由含有選自丙烯酸系黏著劑、胺甲酸乙酯系黏著劑及聚矽氧系黏著劑中之至少一種黏著劑的黏著劑組成物形成。In the optical surface protective film with a separator according to the present invention, the aforementioned adhesive layer is preferably adhered by at least one adhesive selected from the group consisting of an acrylic adhesive, a urethane adhesive, and a polysiloxane adhesive. Agent composition is formed.
發明效果 本發明藉由使用具有特定光學特性之分離件，可製得下述附分離件之光學用表面保護薄膜，乃屬有用：在使用自動貼合機將附分離件之光學用表面保護薄膜對光學構件表面調整位置，並於剝離分離件後貼合於光學構件表面時，具有優異之利用分離件之位置調整性，而可以正確位置貼附於光學構件表面。ADVANTAGEOUS EFFECTS OF THE INVENTION By using a separator with specific optical characteristics, the present invention can produce the following optical surface protective film with a separator, which is useful: when using an automatic laminator, the optical surface protective film with a separator is used. When adjusting the position of the surface of the optical member and bonding it to the surface of the optical member after the separation member is peeled off, it has excellent position adjustment using the separation member, and can be attached to the surface of the optical member at the correct position.
用以實施發明之形態 以下詳細說明本發明的實施形態。Embodiments for Carrying Out the Invention Embodiments of the present invention will be described in detail below.
＜附分離件之光學用表面保護薄膜的整體構造＞ 揭示於此的附分離件之光學用表面保護薄膜(以下，有時僅會稱「表面保護薄膜」。)，一般而言是稱為黏著膠帶、黏著標籤、黏著薄膜等形態的黏著劑層表面被分離件保護之物，且尤其適用作為在加工、檢查、輸送光學零件(例如偏光板、波長板等之作為液晶顯示面板構成要素使用的光學零件)時保護光學零件表面之表面保護薄膜。前述表面保護薄膜之黏著劑層典型上連續形成，但並非受限於該形態，亦可為例如形成點狀、條紋狀等規則性或無規性圖案之黏著劑層。又，揭示於此的表面保護薄膜亦可為捲狀或單片狀。<Overall Structure of Optical Surface Protective Film with Separator> The optical surface protective film with separator disclosed below (hereinafter, sometimes referred to simply as "surface protective film") is generally referred to as adhesion. The surface of the adhesive layer in the form of tape, adhesive label, adhesive film, etc. is protected by a separator, and is particularly suitable for use as a component of a liquid crystal display panel in processing, inspection, and transportation of optical parts (such as polarizing plates and wavelength plates). Optical parts) are surface protection films that protect the surface of optical parts. The aforementioned adhesive layer of the surface protection film is typically formed continuously, but it is not limited to this form, and may be, for example, an adhesive layer forming regular or random patterns such as dots and stripes. The surface protection film disclosed herein may be in the form of a roll or a single sheet.
＜基材薄膜＞ 本發明之附分離件之光學用表面保護薄膜之特徵在於具有基材薄膜。在揭示於此的技術中，構成基材薄膜的樹脂材料雖可無特別限制地使用，但宜使用例如透明性、機械性強度、熱穩定性、防潮性、各向同性、可撓性、尺寸穩定性等之特性優異者。尤其是基材藉由具有可撓性，而可以輥塗機等塗佈黏著劑組成物，並可捲繞成捲狀，乃屬有用。<Substrate film> The optical surface protection film with a separator of the present invention is characterized by having a substrate film. In the technology disclosed here, although the resin material constituting the base film can be used without particular limitation, it is suitable to use, for example, transparency, mechanical strength, thermal stability, moisture resistance, isotropy, flexibility, and size. Those with excellent stability and other characteristics. In particular, since the base material has flexibility, the adhesive composition can be applied by a roll coater or the like and can be wound into a roll shape, which is useful.
以前述基材薄膜(支持體)來說，可適宜地將由以下述樹脂材料構成的塑膠薄膜作為前述基材薄膜來使用，該樹脂材料以例如聚對苯二甲酸乙二酯(PET)、聚萘二甲酸乙二酯(PEN)、聚對苯二甲酸丁二酯等之聚酯系聚合物；二乙醯纖維素、三乙醯纖維素等之纖維素系聚合物；聚碳酸酯系聚合物；聚甲基丙烯酸甲酯等之丙烯酸系聚合物等為主要樹脂成分(樹脂成分之中的主成分，典型來說為佔有50重量%以上的成分)。前述樹脂材料的其他例可列舉以下述作為樹脂材料者：聚苯乙烯、丙烯腈-苯乙烯共聚物等之苯乙烯系聚合物；聚乙烯、聚丙烯、具有環狀或降莰烯結構之聚烯烴、乙烯-丙烯共聚物等之烯烴系聚合物；氯乙烯聚合物；尼龍6、尼龍6,6、芳香族聚醯胺等之醯胺系聚合物；等。前述樹脂材料之又其他例可列舉醯亞胺系聚合物、碸系聚合物、聚醚碸系聚合物、聚醚醚酮系聚合物、聚苯硫醚系聚合物、乙烯醇系聚合物、偏二氯乙烯系聚合物、乙烯醇縮丁醛系聚合物、芳酯系聚合物、聚甲醛系聚合物、環氧系聚合物等。亦可為由上述聚合物之2種以上混合物構成的基材薄膜。As the substrate film (support), a plastic film composed of a resin material such as polyethylene terephthalate (PET), polymer Polyester polymers such as ethylene naphthalate (PEN), polybutylene terephthalate, etc .; cellulose polymers such as diethyl cellulose, triethyl cellulose, etc .; polycarbonate polymer The main resin component is the acrylic resin such as polymethyl methacrylate (the main component of the resin component is typically a component occupying 50% by weight or more). Other examples of the resin material include those using the following resin materials: styrene polymers such as polystyrene and acrylonitrile-styrene copolymers; polyethylene, polypropylene, and polymers having a cyclic or norbornene structure Olefins based polymers such as olefins, ethylene-propylene copolymers; vinyl chloride polymers; polyamides based polymers such as nylon 6, nylon 6,6, and aromatic polyamines; etc. As other examples of the resin material, fluorene-based polymers, fluorene-based polymers, polyether fluorene-based polymers, polyetheretherketone-based polymers, polyphenylene sulfide-based polymers, vinyl alcohol-based polymers, Vinylidene-based polymers, vinyl butyral-based polymers, aryl ester-based polymers, polyoxymethylene-based polymers, epoxy-based polymers, and the like. It may be a base film made of a mixture of two or more of the above polymers.
前述基材薄膜可適宜採用由透明的熱可塑性樹脂構成之塑膠薄膜。而在前述塑膠薄膜中較佳態樣係使用聚酯薄膜。在此，聚酯薄膜是指以具有以聚對苯二甲酸乙二酯(PET)、聚萘二甲酸乙二酯(PEN)、聚對苯二甲酸丁二酯等酯鍵為基礎的主骨架之聚酯系聚合物材料(聚酯樹脂)作為主要樹脂成分者。所述聚酯薄膜具有優異光學特性及尺寸穩定性等作為表面保護薄膜的基材薄膜之較佳的特性。As the substrate film, a plastic film made of a transparent thermoplastic resin can be suitably used. In the aforementioned plastic film, a polyester film is preferably used. Here, the polyester film refers to a main skeleton having an ester bond such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polybutylene terephthalate. The polyester-based polymer material (polyester resin) is used as the main resin component. The polyester film has excellent characteristics as a base film of a surface protection film, such as excellent optical characteristics and dimensional stability.
構成前述基材薄膜的樹脂材料也可因應需要摻混抗氧化劑、紫外線吸收劑、塑化劑、著色劑(顏料、染料等)等各種添加劑。可施加例如電暈放電處理、電漿處理、紫外線照射處理、酸處理、鹼處理、塗佈底塗劑等眾所周知或慣用之表面處理。所述表面處理是可用以提高例如基材薄膜與黏著劑層之密著性(黏著劑層之投錨性)之處理。The resin material constituting the substrate film may be blended with various additives such as an antioxidant, an ultraviolet absorber, a plasticizer, and a colorant (pigment, dye, etc.) as necessary. For example, a well-known or conventional surface treatment such as a corona discharge treatment, a plasma treatment, an ultraviolet irradiation treatment, an acid treatment, an alkali treatment, and a primer application can be applied. The surface treatment is a treatment that can be used to improve, for example, the adhesion between the substrate film and the adhesive layer (anchorability of the adhesive layer).
前述基材薄膜也可使用施加有抗靜電處理之塑膠薄膜。藉由使用前述基材薄膜，可在剝離表面保護薄膜時抑制其本身的帶電，故較佳。又，基材薄膜為塑膠薄膜，且藉由在前述塑膠薄膜施加抗靜電處理，可減低表面保護薄膜本身的帶電，而可獲得對被附體之抗靜電能力優異者。另，賦予抗靜電機能之方法並無特別限制，可使用眾所周知之方法，例如可舉塗佈由抗靜電劑與樹脂成分構成之抗靜電性樹脂或含有導電性聚合物、導電性物質之導電性樹脂之方法，或者將導電性物質蒸鍍或電鍍之方法，還可舉出混入抗靜電劑之方法等。The substrate film may be a plastic film to which an antistatic treatment is applied. By using the aforementioned base film, it is preferable to suppress the charging of the surface protection film when it is peeled off. In addition, the base film is a plastic film, and by applying an antistatic treatment to the aforementioned plastic film, the electrification of the surface protection film itself can be reduced, and a person having excellent antistatic ability to an adherend can be obtained. In addition, the method of imparting antistatic function is not particularly limited, and a well-known method can be used. For example, an antistatic resin composed of an antistatic agent and a resin component, or a conductive material containing a conductive polymer or a conductive substance can be applied. The method of resin, or the method of vapor-depositing or electroplating a conductive substance, the method of mixing an antistatic agent, etc. are mentioned.
前述基材薄膜之厚度通常為5~200μm，較佳為10~100μm左右。當前述基材薄膜之厚度在前述範圍內時，對被附體的貼合作業性以及從被附體剝離之剝離性或作業性優異，故較佳。The thickness of the substrate film is usually 5 to 200 μm, and preferably about 10 to 100 μm. When the thickness of the substrate film is within the foregoing range, it is preferable because it has excellent adhesion properties to the adherend and excellent peelability or workability from the adherend.
揭示於此的表面保護薄膜除了基材薄膜、黏著劑層及分離件之外，還可以包含其他層的態樣下實施而獲得。前述其他層可列舉將抗靜電層或黏著劑層之投錨性提高的底塗層(錨固層)等。The surface protection film disclosed herein can be obtained in a state including other layers in addition to the base film, the adhesive layer, and the separator. Examples of the other layers include an undercoat layer (anchor layer) and the like that improve the anchoring property of the antistatic layer or the adhesive layer.
＜黏著劑層＞ 本發明所使用之黏著劑只要是由含有具有黏著性的黏著性聚合物之黏著劑組成物形成者，可無特別限制地使用。前述黏著劑組成物例如可使用丙烯酸系黏著劑、胺甲酸乙酯系黏著劑、合成橡膠系黏著劑、天然橡膠系黏著劑、聚矽氧系黏著劑、聚酯系黏著劑等，其中以使用(含有)選自於由丙烯酸系黏著劑、胺甲酸乙酯系黏著劑及聚矽氧系黏著劑所構成群組中至少1種者為佳，尤宜使用含有屬前述黏著性聚合物的(甲基)丙烯酸系聚合物之黏著劑組成物。<Adhesive layer> The adhesive used in the present invention may be used without particular limitation as long as it is formed of an adhesive composition containing an adhesive polymer having adhesive properties. The adhesive composition may be, for example, an acrylic adhesive, a urethane adhesive, a synthetic rubber adhesive, a natural rubber adhesive, a silicone adhesive, a polyester adhesive, or the like. Among them, (Containing) It is preferable to select at least one selected from the group consisting of an acrylic adhesive, a urethane adhesive, and a polysiloxane adhesive, and it is particularly preferable to use ( Adhesive composition of a (meth) acrylic polymer.
前述黏著劑層使用丙烯酸系黏著劑時，構成前述丙烯酸系黏著劑之黏著性聚合物的(甲基)丙烯酸系聚合物可使用以具有碳數1~14烷基之(甲基)丙烯酸系單體作為主單體來作為構成其之原料。前述(甲基)丙烯酸系單體可使用1種或2種以上。藉由使用具有前述碳數為1~14烷基之(甲基)丙烯酸系單體，可容易將對被附體(被保護體)的剝離力(黏著力)控制地較低，而獲得輕剝離性或再剝離性優異之表面保護薄膜。另，在本發明中之(甲基)丙烯酸系聚合物是指丙烯酸系聚合物及/或甲基丙烯酸系聚合物，又，(甲基)丙烯酸酯是指丙烯酸酯及/或甲基丙烯酸酯。When an acrylic adhesive is used for the adhesive layer, the (meth) acrylic polymer constituting the adhesive polymer of the acrylic adhesive may be a (meth) acrylic monomer having 1 to 14 alkyl groups. The body is used as the main monomer as the raw material constituting it. The (meth) acrylic monomer may be used alone or in combination of two or more. By using the (meth) acrylic monomer having the aforementioned 1 to 14 carbons, the peeling force (adhesive force) to the adherend (protected body) can be easily controlled to be low, and light weight can be obtained. A surface protective film having excellent releasability or repeelability. In the present invention, the (meth) acrylic polymer means an acrylic polymer and / or a methacrylic polymer, and the (meth) acrylate means an acrylate and / or a methacrylate .
前述含有碳數1~14烷基之(甲基)丙烯酸系單體之具體例可列舉(甲基)丙烯酸甲酯、(甲基)丙烯酸乙酯、(甲基)丙烯酸正丁酯、(甲基)丙烯酸二級丁酯、(甲基)丙烯酸三級丁酯、(甲基)丙烯酸異丁酯、(甲基)丙烯酸己酯、(甲基)丙烯酸2-乙基己酯、(甲基)丙烯酸正辛酯、(甲基)丙烯酸異辛酯、(甲基)丙烯酸正壬酯、(甲基)丙烯酸異壬酯、(甲基)丙烯酸正癸酯、(甲基)丙烯酸異癸酯、(甲基)丙烯酸正十二酯、(甲基)丙烯酸正十三酯、(甲基)丙烯酸正十四酯等。Specific examples of the (meth) acrylic monomer containing a C1-C14 alkyl group include methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl (meth) acrylate, and (meth) acrylate. Base) secondary butyl acrylate, tertiary butyl (meth) acrylate, isobutyl (meth) acrylate, hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, (methyl) ) N-octyl acrylate, isooctyl (meth) acrylate, n-nonyl (meth) acrylate, isononyl (meth) acrylate, n-decyl (meth) acrylate, isodecyl (meth) acrylate , N-dodecyl (meth) acrylate, n-tridecyl (meth) acrylate, n-tetradecyl (meth) acrylate, and the like.
其中，在本發明之表面保護薄膜中，尤其可列舉(甲基)丙烯酸正丁酯、(甲基)丙烯酸己酯、(甲基)丙烯酸2-乙基己酯、(甲基)丙烯酸正辛酯、(甲基)丙烯酸異辛酯、(甲基)丙烯酸正壬酯、(甲基)丙烯酸異壬酯、(甲基)丙烯酸正癸酯、(甲基)丙烯酸異癸酯、(甲基)丙烯酸正十二酯、(甲基)丙烯酸正十三酯、(甲基)丙烯酸正十四酯等含有碳數4~14烷基之(甲基)丙烯酸系單體作為較佳者。尤其是藉由使用前述含有碳數4~14烷基之(甲基)丙烯酸系單體，可容易將對被附體的剝離力(黏著力)控制地較低，而為再剝離性優異者。Among the surface protection films of the present invention, n-butyl (meth) acrylate, hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, and n-octyl (meth) acrylate are particularly exemplified. Ester, isooctyl (meth) acrylate, n-nonyl (meth) acrylate, isononyl (meth) acrylate, n-decyl (meth) acrylate, isodecyl (meth) acrylate, (meth) (Meth) acrylic monomers containing 4 to 14 alkyl groups, such as n-dodecyl acrylate, n-tridecyl (meth) acrylate, and n-tetradecyl (meth) acrylate, are preferred. In particular, by using the (meth) acrylic monomer containing a 4- to 14-alkyl group, the peeling force (adhesive force) to an adherend can be easily controlled to be low, and it is excellent in re-peelability. .
尤其是相對於構成前述(甲基)丙烯酸系聚合物之單體成分總量100重量%，以含有65重量%以上之碳數1~14烷基之(甲基)丙烯酸系單體為佳，較佳為75重量%以上，更佳為85~99.9重量%，最佳為90~99重量%。若低於65重量%，黏著劑組成物之適度的濕潤性及黏著劑層的凝聚力會變差，故不佳。In particular, it is preferable that the (meth) acrylic monomer containing 1 to 14 carbon atoms having a carbon number of 1 to 14 is more than 65% by weight based on 100% by weight of the total monomer components constituting the (meth) acrylic polymer. It is preferably 75% by weight or more, more preferably 85 to 99.9% by weight, and most preferably 90 to 99% by weight. If it is less than 65% by weight, the moderate wettability of the adhesive composition and the cohesive force of the adhesive layer are deteriorated, which is not preferable.
又，前述(甲基)丙烯酸系聚合物可使用含羥基之(甲基)丙烯酸系單體作為原料單體。前述含羥基之(甲基)丙烯酸系單體可使用1種或2種以上。藉由使用前述含羥基之(甲基)丙烯酸系單體，可容易控制黏著劑組成物的交聯等，且更可容易控制利用流動改善潤濕性與剝離時剝離力(黏著力)降低之平衡。As the (meth) acrylic polymer, a hydroxyl-containing (meth) acrylic monomer can be used as a raw material monomer. The hydroxyl-containing (meth) acrylic monomer may be used alone or in combination of two or more. By using the aforementioned (meth) acrylic monomer containing a hydroxyl group, it is possible to easily control the cross-linking of the adhesive composition, etc., and it is easier to control the improvement of wettability by flow and the decrease in peeling force (adhesive force) during peeling. balance.
前述含羥基之(甲基)丙烯酸系單體可列舉例如2-羥基乙基(甲基)丙烯酸酯、2-羥基丙基(甲基)丙烯酸酯、4-羥基丁基(甲基)丙烯酸酯、6-羥基己基(甲基)丙烯酸酯、8-羥基辛基(甲基)丙烯酸酯、10-羥基癸基(甲基)丙烯酸酯、12-羥基月桂基(甲基)丙烯酸酯、(4-羥基甲基環己基)甲基丙烯酸酯、N-羥甲基(甲基)丙烯醯胺等。Examples of the hydroxyl-containing (meth) acrylic monomer include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, and 4-hydroxybutyl (meth) acrylate. , 6-hydroxyhexyl (meth) acrylate, 8-hydroxyoctyl (meth) acrylate, 10-hydroxydecyl (meth) acrylate, 12-hydroxylauryl (meth) acrylate, (4 -Hydroxymethylcyclohexyl) methacrylate, N-hydroxymethyl (meth) acrylamide, and the like.
相對於構成前述(甲基)丙烯酸系聚合物之單體成分總量100重量%，以含有25重量%以下之前述含羥基之(甲基)丙烯酸系單體為佳，較佳為15重量%以下，更佳為0.1~10重量%。若在前述範圍內，可容易控制黏著劑組成物之濕潤性與所獲得的黏著劑層之凝聚力的平衡，故較佳。With respect to 100% by weight of the total monomer components constituting the (meth) acrylic polymer, it is preferable that the hydroxy-containing (meth) acrylic monomer contains 25% by weight or less, and more preferably 15% by weight Hereinafter, it is more preferably 0.1 to 10% by weight. If it is in the said range, since it is easy to control the balance of the wettability of an adhesive composition and the cohesive force of the obtained adhesive layer, it is preferable.
又，作為其他聚合性單體成分，從容易獲得黏著性能平衡之理由來看，為使Tg成為0℃以下(通常為-100℃以上)，可在不損及本發明效果的範圍內使用用以調整(甲基)丙烯酸系聚合物的玻璃轉移溫度或剝離性之聚合性單體等。In addition, as another polymerizable monomer component, from the reason that it is easy to obtain a balance in adhesive properties, in order to make Tg 0 ° C or lower (usually -100 ° C or higher), it can be used within a range that does not impair the effect of the present invention. It is used to adjust the glass transition temperature of the (meth) acrylic polymer, the peelable polymerizable monomer, and the like.
又，前述(甲基)丙烯酸系聚合物可使用含羧基之(甲基)丙烯酸系單體作為原料單體。藉由使用含有前述含羧基之(甲基)丙烯酸系單體，可抑制黏著劑層(表面保護薄膜)的黏著力隨時間經過之上升，而使再剝離性、防黏著力上升性及作業性優異。又，除了黏著劑層的凝聚力優異，剪切力也優異，而較佳。As the (meth) acrylic polymer, a carboxyl group-containing (meth) acrylic monomer can be used as a raw material monomer. By using the (meth) acrylic monomer containing the carboxyl group, it is possible to suppress an increase in the adhesive force of the adhesive layer (surface protection film) with the passage of time, and to increase re-peelability, anti-adhesive force, and workability. Excellent. Moreover, in addition to being excellent in the cohesive force of an adhesive layer, it is excellent also in a shear force, and it is preferable.
前述含羧基之(甲基)丙烯酸系單體可列舉例如(甲基)丙烯酸、羧基乙基(甲基)丙烯酸酯、羧基戊基(甲基)丙烯酸酯等。Examples of the carboxyl group-containing (meth) acrylic monomer include (meth) acrylic acid, carboxyethyl (meth) acrylate, and carboxypentyl (meth) acrylate.
相對於構成前述(甲基)丙烯酸系聚合物之單體成分總量100重量%，前述含羧基之(甲基)丙烯酸系單體宜為10重量%以下，較宜為0~8重量%，更宜為0~6重量%。若在前述範圍內，可容易控制黏著劑組成物之潤濕性與所獲得的黏著劑層之凝聚力的平衡，故較佳。The carboxyl-containing (meth) acrylic monomer is preferably 10% by weight or less, more preferably 0 to 8% by weight, based on 100% by weight of the total monomer components constituting the (meth) acrylic polymer. More preferably, it is 0 to 6% by weight. If it is in the said range, since it is easy to control the balance of the wettability of an adhesive composition and the cohesive force of the obtained adhesive layer, it is preferable.
並且，只要是在不損及本發明特性的範圍內，則前述(甲基)丙烯酸系聚合物可無特別限定地使用前述原料單體以外之其他聚合性單體。例如前述其他聚合性單體可適宜使用含氰基單體、乙烯酯單體、芳香族乙烯單體等提昇凝聚力與耐熱性之成分，或含醯胺基單體、含醯亞胺基單體、含胺基單體、含環氧基單體、N-丙烯醯基嗎福啉、乙烯醚基單體等具有提昇剝離力(黏著力)與可作為交聯化基點發揮作用之官能基之成分。其中，宜使用含氰基單體、含醯胺基單體、含醯亞胺基單體、含胺基單體及N-丙烯醯基嗎福啉等之含氮單體。藉由使用含氮單體，可確保不會產生浮凸或剝落等之適度的剝離力(黏著力)，而更可獲得剪切力優異的表面保護薄膜，故屬有用。該等聚合性單體可使用1種或2種以上。Moreover, as long as it is the range which does not impair the characteristic of this invention, the said (meth) acrylic-type polymer can use the polymerizable monomer other than the said raw material monomer without a restriction | limiting. For example, as the other polymerizable monomers, components that improve cohesion and heat resistance, such as a cyano-containing monomer, a vinyl ester monomer, and an aromatic vinyl monomer, or a fluorenimine-containing monomer and a fluorinimide-containing monomer can be suitably used. , Amine-containing monomers, epoxy-containing monomers, N-acrylfluorenyl morpholine, vinyl ether-based monomers, etc. have functional groups that improve peeling force (adhesive force) and can function as crosslinking point. ingredient. Among them, nitrogen-containing monomers such as a cyano-containing monomer, a fluorenylamine-containing monomer, a fluorenimine-containing monomer, an amine-containing monomer, and N-propenylmorpholine are preferred. The use of a nitrogen-containing monomer is useful because it can ensure that a moderate peeling force (adhesive force) such as embossing or peeling does not occur, and a surface protective film excellent in shearing force can be obtained. These polymerizable monomers can be used alone or in combination of two or more.
前述含氰基單體可列舉例如丙烯腈、甲基丙烯腈。Examples of the cyano-containing monomer include acrylonitrile and methacrylonitrile.
前述含醯胺基單體可列舉例如丙烯醯胺、甲基丙烯醯胺、二乙基丙烯醯胺、N-乙烯基吡咯啶酮、N,N-二甲基丙烯醯胺、N,N-二甲基甲基丙烯醯胺、N,N-二乙基丙烯醯胺、N,N-二乙基甲基丙烯醯胺、N,N'-亞甲基雙丙烯醯胺、N,N-二甲基胺基丙基丙烯醯胺、N,N-二甲基胺基丙基甲基丙烯醯胺、二丙酮丙烯醯胺等。Examples of the amidino group-containing monomer include acrylamide, methacrylamide, diethylacrylamide, N-vinylpyrrolidone, N, N-dimethylacrylamide, N, N- Dimethylmethacrylamide, N, N-diethylacrylamide, N, N-diethylmethacrylamide, N, N'-methylenebisacrylamide, N, N- Dimethylaminopropyl acrylamide, N, N-dimethylaminopropylmethacrylamide, diacetone acrylamide, and the like.
前述含醯亞胺基單體可列舉例如環己基馬來醯亞胺、異丙基馬來醯亞胺、N-環己基馬來醯亞胺、伊康醯亞胺等。Examples of the fluorenimine-containing monomer include cyclohexylmaleimide, isopropylmaleimide, N-cyclohexylmaleimide, and ikonimine.
前述含胺基單體可列舉例如胺基乙基(甲基)丙烯酸酯、N,N-二甲基胺基乙基(甲基)丙烯酸酯、N,N-二甲基胺基丙基(甲基)丙烯酸酯等。Examples of the amino group-containing monomer include aminoethyl (meth) acrylate, N, N-dimethylaminoethyl (meth) acrylate, and N, N-dimethylaminopropyl ( (Meth) acrylates and the like.
前述乙烯酯單體可列舉例如乙酸乙烯酯、丙酸乙烯酯、月桂酸乙烯酯等。Examples of the vinyl ester monomer include vinyl acetate, vinyl propionate, and vinyl laurate.
前述芳香族乙烯單體可列舉例如苯乙烯、氯苯乙烯、氯甲基苯乙烯、α-甲基苯乙烯、其他的取代苯乙烯等。Examples of the aromatic vinyl monomer include styrene, chlorostyrene, chloromethylstyrene, α-methylstyrene, and other substituted styrenes.
前述含環氧基單體可列舉例如(甲基)丙烯酸環氧丙酯、(甲基)丙烯酸甲基環氧丙酯、烯丙基環氧丙基醚等。Examples of the epoxy-group-containing monomer include glycidyl (meth) acrylate, methyl glycidyl (meth) acrylate, allyl glycidyl ether, and the like.
前述乙烯基醚單體可列舉例如甲基乙烯基醚、乙基乙烯基醚、異丁基乙烯基醚等。Examples of the vinyl ether monomer include methyl vinyl ether, ethyl vinyl ether, and isobutyl vinyl ether.
在本發明中，相對於構成前述(甲基)丙烯酸系聚合物之單體成分總量100重量%，前述其他聚合性單體宜為0~30重量%，較宜為0~10重量%。前述其他聚合性單體為了獲得所期望的特性，可進行適當的調節。In the present invention, the other polymerizable monomer is preferably 0 to 30% by weight, and more preferably 0 to 10% by weight, based on 100% by weight of the total monomer components constituting the (meth) acrylic polymer. The other polymerizable monomers may be appropriately adjusted in order to obtain desired characteristics.
前述(甲基)丙烯酸系聚合物亦可更含有含環氧烷基之反應性單體作為單體成分。The (meth) acrylic polymer may further contain an alkylene oxide-containing reactive monomer as a monomer component.
又，從與含氧伸烷基化合物的相溶性之觀點來看，前述含環氧烷基之反應性單體的氧伸烷基單元之平均加成加莫耳數宜為1~40，較宜為3~40，更宜為4~35，尤其宜為5~30。當前述平均加成莫耳數為1以上時，會有可有效率獲得減低被附體(被保護體)污染之效果的傾向。又，前述平均加成莫耳數大於40時，會有與含氧伸烷基化合物之相互作用增大，造成黏著劑組成物的黏度上升而難以塗敷之傾向，故不佳。另，氧伸烷基鏈之末端亦可即為羥基，或者亦可被其他官能基等取代。In addition, from the viewpoint of compatibility with the oxyalkylene-containing compound, the average addition mol number of the oxyalkylene unit of the aforementioned alkylene oxide-containing reactive monomer is preferably 1 to 40, which is more than It should be 3 ~ 40, more preferably 4 ~ 35, especially 5 ~ 30. When the average addition mole number is 1 or more, there is a tendency that the effect of reducing contamination of an attached body (protected body) can be efficiently obtained. In addition, when the average addition mole number is greater than 40, the interaction with the oxygen-containing alkylene compound is increased, and the viscosity of the adhesive composition tends to increase, making it difficult to apply, which is not preferable. In addition, the end of the oxyalkylene chain may be a hydroxyl group, or may be substituted with other functional groups.
前述含環氧烷基之反應性單體可單獨使用，又，亦可混合2種以上使用，但作為整體之含量，在前述(甲基)丙烯酸系聚合物之單體成分總量中宜為0~20重量%，較宜為0~10重量%。若含環氧烷基之反應性單體之含量超過20重量%，對被附體的污染性會惡化，故不佳。The aforementioned alkylene oxide-containing reactive monomer may be used singly or in combination of two or more kinds. However, the total content is preferably the total monomer component of the (meth) acrylic polymer. 0 to 20% by weight, more preferably 0 to 10% by weight. If the content of the alkylene oxide-containing reactive monomer exceeds 20% by weight, the contamination of the adherend will deteriorate, which is not preferable.
前述含環氧烷基之反應性單體之氧伸烷基單元可列舉具有碳數1~6之伸烷基者，例如可列舉氧亞甲基、氧伸乙基、氧伸丙基、氧伸丁基等。氧伸烷基鏈之烴基可為直鏈，亦可為支鏈。Examples of the oxyalkylene unit of the reactive monomer containing an alkylene oxide group include those having 1 to 6 carbon atoms, and examples include oxymethylene, oxyethyl, oxypropyl, and oxygen. Butyl and so on. The hydrocarbon group of the oxyalkylene chain may be straight or branched.
又，前述含環氧烷基之反應性單體更宜為具有環氧乙基之反應性單體。藉由將具有環氧乙基之含反應性單體之(甲基)丙烯酸系聚合物作為基礎聚合物使用，可提高基礎聚合物與含氧伸烷基化合物之相溶性，適宜抑制對被附體滲出，而獲得低污染性之黏著劑組成物。Moreover, it is more preferable that the said reactive group containing an epoxy alkylene group is a reactive monomer which has an epoxy ethyl group. By using a (meth) acrylic polymer containing a reactive monomer containing an epoxyethyl group as a base polymer, the compatibility between the base polymer and the oxygen-containing alkylene compound can be improved, and it is suitable to suppress the adhesion to the substrate. The body oozes, and a low-contamination adhesive composition is obtained.
前述含環氧烷基之反應性單體可列舉例如(甲基)丙烯酸環氧烷加成物、或分子中具有丙烯醯基、甲基丙烯醯基、烯丙基等反應性取代基之反應性界面活性劑等。Examples of the alkylene oxide-containing reactive monomer include, for example, a reaction of a (meth) acrylic acid alkylene oxide adduct, or a reaction having a reactive substituent such as acrylfluorenyl group, methacrylfluorenyl group, and allyl group in the molecule. Sexual surfactants and so on.
前述(甲基)丙烯酸環氧烷加成物之具體例可列舉例如聚乙二醇(甲基)丙烯酸酯、聚丙二醇(甲基)丙烯酸酯、聚乙二醇-聚丙二醇(甲基)丙烯酸酯、聚乙二醇-聚丁二醇(甲基)丙烯酸酯、聚丙二醇-聚丁二醇(甲基)丙烯酸酯、甲氧基聚乙二醇(甲基)丙烯酸酯、乙氧基聚乙二醇(甲基)丙烯酸酯、丁氧基聚乙二醇(甲基)丙烯酸酯、辛氧基聚乙二醇(甲基)丙烯酸酯、月桂氧基聚乙二醇(甲基)丙烯酸酯、硬脂氧基聚乙二醇(甲基)丙烯酸酯、苯氧基聚乙二醇(甲基)丙烯酸酯、甲氧基聚丙二醇(甲基)丙烯酸酯、辛氧基聚乙二醇-聚丙二醇(甲基)丙烯酸酯等。Specific examples of the (meth) acrylic acid alkylene oxide adduct include, for example, polyethylene glycol (meth) acrylate, polypropylene glycol (meth) acrylate, and polyethylene glycol-polypropylene glycol (meth) acrylic acid. Ester, polyethylene glycol-polybutylene glycol (meth) acrylate, polypropylene glycol-polybutylene glycol (meth) acrylate, methoxypolyethylene glycol (meth) acrylate, ethoxypoly Ethylene glycol (meth) acrylate, butoxy polyethylene glycol (meth) acrylate, octyloxy polyethylene glycol (meth) acrylate, lauryloxy polyethylene glycol (meth) acrylate Ester, stearyloxy polyethylene glycol (meth) acrylate, phenoxy polyethylene glycol (meth) acrylate, methoxy polypropylene glycol (meth) acrylate, octyloxy polyethylene glycol -Polypropylene glycol (meth) acrylate and the like.
又，前述反應性界面活性劑之具體例可列舉例如具有(甲基)丙烯醯基或烯丙基之陰離子型反應性界面活性劑、非離子型反應性界面活性劑、陽離子型反應性界面活性劑等。Specific examples of the reactive surfactant include, for example, an anionic reactive surfactant having a (meth) acrylfluorenyl group or an allyl group, a nonionic reactive surfactant, and a cationic reactive surfactant. Agent.
前述(甲基)丙烯酸系聚合物之重量平均分子量(Mw)以10萬~500萬為佳，以20萬~400萬較佳，以30萬~300萬更佳，最佳為30萬~120萬。重量平均分子量小於10萬時，會有黏著劑層的凝聚力變小以致產生殘膠的傾向。另一方面，重量平均分子量超過500萬時，聚合物的流動性會降低，對被附體(例如偏光板)的濕潤會變得不足，而有造成在被附體與表面保護薄膜的黏著劑層之間產生膨脹之原因的傾向。另，重量平均分子量係指藉由GPC(gel permeation chromatography，凝膠滲透層析法)所測得者。The weight average molecular weight (Mw) of the aforementioned (meth) acrylic polymer is preferably 100,000 to 5 million, more preferably 200,000 to 4 million, more preferably 300,000 to 3 million, and most preferably 300,000 to 120 Million. When the weight-average molecular weight is less than 100,000, the cohesive force of the adhesive layer tends to be small, so that adhesive residue tends to occur. On the other hand, when the weight-average molecular weight exceeds 5 million, the fluidity of the polymer decreases, and the wettability of the adherend (for example, a polarizing plate) becomes insufficient, and there is an adhesive that causes the adherend and the surface protection film. The tendency to cause swelling between layers. The weight-average molecular weight is measured by GPC (gel permeation chromatography).
又，前述(甲基)丙烯酸系聚合物之玻璃轉移溫度(Tg)以0℃以下為佳，較宜為10℃以下(通常為-100℃以上)。當玻璃轉移溫度高於0℃時，聚合物不易流動，以致例如對為光學構件之偏光板之濕潤變得不足，而有造成在偏光板與表面保護薄膜的黏著劑層之間產生膨脹之原因的傾向。尤宜將玻璃轉移溫度設為-40℃以下，較佳為設在-70℃以下，可易製得對偏光板之濕潤性與輕剝離性優異之黏著劑層。又，(甲基)丙烯酸系聚合物之玻璃轉移溫度可藉由適當改變所使用之單體成分或組成比，來將其調整為前述範圍內。The glass transition temperature (Tg) of the (meth) acrylic polymer is preferably 0 ° C or lower, more preferably 10 ° C or lower (usually -100 ° C or higher). When the glass transition temperature is higher than 0 ° C, the polymer does not easily flow, so that, for example, the wetting of the polarizing plate that is an optical member becomes insufficient, and there is a cause of expansion between the polarizing plate and the adhesive layer of the surface protection film. Propensity. It is particularly preferable to set the glass transition temperature to -40 ° C or lower, preferably to -70 ° C or lower, to easily prepare an adhesive layer having excellent wettability and light peelability to a polarizing plate. The glass transition temperature of the (meth) acrylic polymer can be adjusted within the aforementioned range by appropriately changing the monomer component or composition ratio used.
前述(甲基)丙烯酸系聚合物的聚合方法，並無特限定，可以溶液聚合、乳化聚合、塊狀聚合、懸浮聚合等眾所周知之方法來聚合，但尤從作業性的觀點或對被附體(被保護體)之低污染性等特性面來看，溶液聚合為較佳的態樣。又，所獲得之聚合物，可為無規共聚物、嵌段共聚物、交替共聚物、接枝共聚物等之任一種。The method of polymerizing the (meth) acrylic polymer is not particularly limited, and it can be polymerized by well-known methods such as solution polymerization, emulsion polymerization, block polymerization, and suspension polymerization. However, it is particularly preferable from the viewpoint of workability or attachment. From the viewpoint of the low pollution property of the (protected body), solution polymerization is a preferable aspect. The obtained polymer may be any of a random copolymer, a block copolymer, an alternating copolymer, and a graft copolymer.
在前述黏著劑層使用胺甲酸乙酯系黏著劑時，可採用任意適當的胺甲酸乙酯系黏著劑。作為此類胺甲酸乙酯系黏著劑，較佳者可列舉由使多元醇與聚異氰酸酯化合物進行反應而獲得之黏著性聚合物之胺甲酸乙酯系聚合物構成者。多元醇可列舉例如聚醚多元醇、聚酯多元醇、聚碳酸酯多元醇、聚己內酯多元醇等。聚異氰酸酯化合物可列舉例如二異氰酸二苯甲烷酯、二異氰酸甲苯酯、二異氰酸六亞甲酯等。When a urethane-based adhesive is used for the adhesive layer, any appropriate urethane-based adhesive may be used. As such a urethane-based adhesive, a urethane-based polymer composed of an adhesive polymer obtained by reacting a polyol and a polyisocyanate compound is preferable. Examples of the polyol include polyether polyols, polyester polyols, polycarbonate polyols, and polycaprolactone polyols. Examples of the polyisocyanate compound include diphenylmethane diisocyanate, toluene diisocyanate, and methylene diisocyanate.
在前述黏著劑層使用聚矽氧系黏著劑時，可採用任意適當的聚矽氧系黏著劑。作為此類聚矽氧系黏著劑，以可採用由使黏著性聚合物之聚矽氧系聚合物進行混合或凝聚而得者為佳。When a silicone adhesive is used as the adhesive layer, any appropriate silicone adhesive can be used. As such a polysiloxane adhesive, it is preferable to use one obtained by mixing or agglomerating a polysiloxane polymer of an adhesive polymer.
又，前述聚矽氧系黏著劑可列舉加成反應硬化型聚矽氧系黏著劑或過氧化物硬化型聚矽氧系黏著劑。該等聚矽氧系黏著劑之中，從不使用過氧化物(過氧化苯甲醯等)而不會產生分解物來看，以加成反應硬化型聚矽氧系黏著劑為佳。Examples of the polysiloxane-based adhesive include addition reaction-hardening polysiloxane-based adhesives and peroxide-hardening polysiloxane-based adhesives. Among these polysiloxane adhesives, addition-hardening polysiloxane adhesives are preferred because they do not use peroxides (benzidine peroxide, etc.) and do not generate decomposition products.
前述加成反應硬化型聚矽氧系黏著劑之硬化反應，例如欲製得聚矽氧烷系黏著劑時，一般可列舉藉由白金觸媒將聚烷基氫矽氧烷組成物硬化的方法。For the curing reaction of the addition reaction-curing polysiloxane adhesive, for example, when a polysiloxane adhesive is to be prepared, a method of curing a polyalkylhydrosiloxane composition by a platinum catalyst is generally mentioned. .
＜含氧伸烷基化合物＞ 本發明所使用的黏著劑組成物亦可含有含氧伸烷基化合物。藉由含有含氧伸烷基化合物，而可進一步展現輕剝離性。作為含氧伸烷基化合物，可列舉具有氧伸烷基鏈之有機聚矽氧烷或不含有機聚矽氧烷之含氧伸烷基化合物。<Oxyalkylene-containing compound> The adhesive composition used in the present invention may contain an oxygen-containing alkylene compound. By containing an oxygen-containing alkylene compound, light peelability can be further exhibited. Examples of the oxygen-containing alkylene compound include an organic polysiloxane having an oxyalkylene chain or an oxygen-containing alkylene compound not containing an organic polysiloxane.
以前述具有氧伸烷基鏈之有機聚矽氧烷的具體例來說，作為在主鏈具有氧伸烷基鏈之有機聚矽氧烷的具體例可列舉例如市售品之商品名X-22-4952、X-22-4272、X-22-6266、KF-6004、KF-889(以上為信越化學工業公司製)、BY16-201、SF8427(以上為Toray‧Dow Corning公司製)、IM22(旭化成Wacker公司製)等。又，作為在側鏈具有氧伸烷基鏈之有機聚矽氧烷的具體例可列舉例如市售品之商品名KF-351A、KF-352A、KF-353、KF-354L、KF-355A、KF-615A、KF-945、KF-640、KF-642、KF-643、KF-6022、X-22-6191、X-22-4515、KF-6011、KF-6012、KF-6015、KF-6017、X-22-2516(以上為信越化學工業公司製)SF8428、FZ-2162、SH3749、FZ-77、L-7001、FZ-2104、FZ-2110、L-7002、FZ-2122、FZ-2164、FZ-2203、FZ-7001、SH8400、SH8700、SF8410、SF8422(以上為Toray‧Dow Corning公司製)、TSF-4440，TSF-4441、TSF-4445、TSF-4450、TSF-4446、TSF-4452、TSF-4460(以上為Momentive Performance Materials公司製)、BYK-333、BYK-307、BYK-377、BYK-UV3500、BYK-UV3570(BYK-Chemie Japan公司製)等。該等化合物可單獨使用，又亦可混合2種以上使用。Taking the specific example of the organopolysiloxane having an oxyalkylene chain as described above, specific examples of the organopolysiloxane having an oxyalkylene chain in the main chain include, for example, a trade name X- 22-4952, X-22-4272, X-22-6266, KF-6004, KF-889 (the above is manufactured by Shin-Etsu Chemical Industry Co., Ltd.), BY16-201, SF8427 (the above is manufactured by Toray‧Dow Corning), IM22 (Manufactured by Asahi Kasei Wacker). Specific examples of the organopolysiloxane having an oxyalkylene chain in a side chain include, for example, commercially available product names KF-351A, KF-352A, KF-353, KF-354L, KF-355A, KF-615A, KF-945, KF-640, KF-642, KF-643, KF-6022, X-22-6191, X-22-4515, KF-6011, KF-6012, KF-6015, KF- 6017, X-22-2516 (the above are manufactured by Shin-Etsu Chemical Industry Co., Ltd.) SF8428, FZ-2162, SH3749, FZ-77, L-7001, FZ-2104, FZ-2110, L-7002, FZ-2122, FZ- 2164, FZ-2203, FZ-7001, SH8400, SH8700, SF8410, SF8422 (above manufactured by Toray‧Dow Corning), TSF-4440, TSF-4441, TSF-4445, TSF-4450, TSF-4446, TSF- 4452, TSF-4460 (the above are manufactured by Momentive Performance Materials), BYK-333, BYK-307, BYK-377, BYK-UV3500, BYK-UV3570 (by BYK-Chemie Japan), and the like. These compounds can be used alone or in combination of two or more.
前述不含有機聚矽氧烷之含氧伸烷基化合物的具體例可列舉例如聚氧伸烷基烷基胺、聚氧伸烷基二胺、聚氧伸烷基脂肪酸酯、聚氧伸烷基山梨醇脂肪酸酯、聚氧伸烷基烷基苯基醚、聚氧伸烷基烷基醚、聚氧伸烷基烷基烯丙基醚、聚氧伸烷基烷基苯基烯丙基醚等非離子性界面活性劑；聚氧伸烷基烷基醚硫酸酯鹽、聚氧伸烷基烷基醚磷酸酯鹽、聚氧伸烷基烷基苯基醚硫酸酯鹽、聚氧伸烷基烷基苯基醚磷酸酯鹽等陰離子性界面活性劑；此外，還有具有聚氧伸烷基鏈(聚環氧烷基鏈)之陽離子性界面活性劑或兩性離子界面活性劑、具有聚氧伸烷基鏈之聚醚系化合物(及包含其衍生物)、具有聚氧伸烷基鏈之丙烯酸化合物(及包含其衍生物)等。又，亦可將含聚氧伸烷基鏈之單體作為含聚氧伸烷基鏈化合物而摻混。所述含聚氧伸烷基鏈化合物可單獨使用，亦可組合2種以上使用。Specific examples of the aforementioned oxygen-containing alkylene compound containing no organic polysiloxane include polyoxyalkylene alkylamine, polyoxyalkylene diamine, polyoxyalkylene fatty acid ester, and polyoxyalkylene. Alkyl sorbitol fatty acid ester, polyoxyalkylene alkylphenyl ether, polyoxyalkylene alkyl ether, polyoxyalkylene alkylallyl ether, polyoxyalkylene alkylphenylene Non-ionic surfactants such as propyl ether; polyoxyalkylene alkyl ether sulfate, polyoxyalkylene alkyl ether phosphate, polyoxyalkylene alkyl phenyl ether sulfate, poly Anionic surfactants such as oxyalkylene alkyl phenyl ether phosphate ester salts; In addition, there are cationic surfactants or zwitterionic surfactants with a polyoxyalkylene chain (polyoxyalkylene chain). , Polyether compounds (and derivatives thereof) having a polyoxyalkylene chain, acrylic compounds (and derivatives thereof) having a polyoxyalkylene chain, and the like. The polyoxyalkylene chain-containing monomer may be blended as a polyoxyalkylene chain-containing compound. The polyoxyalkylene chain-containing compound may be used alone or in combination of two or more kinds.
前述具有聚氧伸烷基鏈之聚醚系化合物(聚醚成分)之具體例可列舉聚丙二醇(PPG)-聚乙二醇(PEG)之嵌段共聚物、PPG-PEG-PPG之嵌段共聚物、PEG-PPG-PEG之嵌段共聚物等。前述具有聚氧伸烷基鏈之聚醚系化合物之衍生物可列舉末端經醚化之含氧伸丙基化合物(PPG單烷基醚、PEG-PPG單烷基醚等)、末端經乙醯化之含氧伸丙基化合物(末端乙醯化PPG等)等。Specific examples of the polyether compound (polyether component) having a polyoxyalkylene chain include a block copolymer of polypropylene glycol (PPG) -polyethylene glycol (PEG), and a block of PPG-PEG-PPG. Copolymers, block copolymers of PEG-PPG-PEG, etc. Examples of the derivative of the polyether-based compound having a polyoxyalkylene chain include an oxyalkylene compound (PPG monoalkyl ether, PEG-PPG monoalkyl ether, etc.) having an etherified terminal, and ethyl acetate at the terminal. Chemical oxygenated compounds (such as terminal acetylated PPG, etc.).
又，前述具有聚氧伸烷基鏈之丙烯酸化合物可列舉具有氧伸烷基之(甲基)丙烯酸系聚合物。作為前述氧伸烷基，氧伸烷基單元之加成莫耳數，以1~50為佳，以2~30為較佳，以2~20為更佳。又，前述氧伸烷基鏈之末端亦可即為羥基，或者亦可被烷基、苯基等取代。Examples of the acrylic compound having a polyoxyalkylene chain include a (meth) acrylic polymer having an oxyalkylene group. As the aforementioned oxyalkylene group, the addition mole number of the oxyalkylene unit is preferably 1 to 50, more preferably 2 to 30, and even more preferably 2 to 20. The terminal of the oxyalkylene chain may be a hydroxyl group, or may be substituted with an alkyl group, a phenyl group, or the like.
前述具有氧伸烷基之(甲基)丙烯酸酯聚合物宜為含(甲基)丙烯酸環氧烷作為單體成分之聚合物，以前述(甲基)丙烯酸環氧烷之具體例來說，作為含乙二醇基之(甲基)丙烯酸酯可列舉例如甲氧基-二乙二醇(甲基)丙烯酸酯、甲氧基-三乙二醇(甲基)丙烯酸酯等之甲氧基-聚乙二醇(甲基)丙烯酸酯型，乙氧基-二乙二醇(甲基)丙烯酸酯、乙氧基-三乙二醇(甲基)丙烯酸酯等之乙氧基-聚乙二醇(甲基)丙烯酸酯型，丁氧基-二乙二醇(甲基)丙烯酸酯、丁氧基-三乙二醇(甲基)丙烯酸酯等之丁氧基-聚乙二醇(甲基)丙烯酸酯型，苯氧基-二乙二醇(甲基)丙烯酸酯、苯氧基-三乙二醇(甲基)丙烯酸酯等之苯氧基-聚乙二醇(甲基)丙烯酸酯型，2-乙基己基-聚乙二醇(甲基)丙烯酸酯、壬基苯基-聚乙二醇(甲基)丙烯酸酯型，甲氧基-二丙二醇(甲基)丙烯酸酯等之甲氧基-聚丙二醇(甲基)丙烯酸酯型等。The aforementioned (meth) acrylate polymer having an oxyalkylene group is preferably a polymer containing (meth) acrylic acid alkylene oxide as a monomer component. Taking specific examples of the aforementioned (meth) acrylic acid alkylene oxide, Examples of the (meth) acrylate containing a glycol group include methoxy groups such as methoxy-diethylene glycol (meth) acrylate and methoxy-triethylene glycol (meth) acrylate. -Polyethylene glycol (meth) acrylate type, ethoxy-polyethylene glycol, such as ethoxy-diethylene glycol (meth) acrylate, ethoxy-triethylene glycol (meth) acrylate, etc. Glycol (meth) acrylate type, butoxy-polyethylene glycol (butoxy-diethylene glycol (meth) acrylate, butoxy-triethylene glycol (meth) acrylate, etc.) Meth) acrylate type, phenoxy-polyethylene glycol (meth), such as phenoxy-diethylene glycol (meth) acrylate, phenoxy-triethylene glycol (meth) acrylate, etc. Acrylate type, 2-ethylhexyl-polyethylene glycol (meth) acrylate, nonylphenyl-polyethylene glycol (meth) acrylate type, methoxy-dipropylene glycol (meth) acrylate Methoxy-polypropylene glycol (meth) acrylate type, etc. .
又，亦可使用前述(甲基)丙烯酸環氧烷以外之其他單體成分作為前述單體成分。其他單體成分之具體例可列舉(甲基)丙烯酸甲酯、(甲基)丙烯酸乙酯、(甲基)丙烯酸正丁酯、(甲基)丙烯酸二級丁酯、(甲基)丙烯酸三級丁酯、(甲基)丙烯酸異丁酯、(甲基)丙烯酸己酯、(甲基)丙烯酸2-乙基己酯、(甲基)丙烯酸正辛酯、(甲基)丙烯酸異辛酯、(甲基)丙烯酸正壬酯、(甲基)丙烯酸異壬酯、(甲基)丙烯酸正癸酯、(甲基)丙烯酸異癸酯、(甲基)丙烯酸正十二烷基酯、(甲基)丙烯酸正十三烷基酯、(甲基) 丙烯酸正十四烷基酯等具有碳數1~14之烷基之丙烯酸酯及/或甲基丙烯酸酯。Moreover, you may use other monomer components other than the said (meth) acrylic-acid alkylene oxide as said monomer component. Specific examples of other monomer components include methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl (meth) acrylate, secondary butyl (meth) acrylate, and tributyl (meth) acrylate. Grade butyl, isobutyl (meth) acrylate, hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, n-octyl (meth) acrylate, isooctyl (meth) acrylate , N-nonyl (meth) acrylate, isononyl (meth) acrylate, n-decyl (meth) acrylate, isodecyl (meth) acrylate, n-dodecyl (meth) acrylate, ( Acrylates and / or methacrylates having an alkyl group having 1 to 14 carbon atoms such as n-tridecyl methacrylate and n-tetradecyl (meth) acrylate.
並且，亦可適當地使用含羧基之(甲基)丙烯酸酯、含磷酸基之(甲基)丙烯酸酯、含氰基之(甲基)丙烯酸酯、乙烯酯類、芳香族乙烯化合物、含酸酐基之(甲基)丙烯酸酯、含羥基之(甲基)丙烯酸酯、含醯胺基之(甲基)丙烯酸酯、含胺基之(甲基)丙烯酸酯、含環氧基之(甲基)丙烯酸酯、N-丙烯醯基嗎福啉、乙烯基醚類等作為前述(甲基)丙烯酸環氧烷以外之其他單體成分。In addition, a carboxyl group-containing (meth) acrylate, a phosphate group-containing (meth) acrylate, a cyano group-containing (meth) acrylate, a vinyl ester, an aromatic vinyl compound, and an acid anhydride may be used as appropriate. (Meth) acrylates based on hydroxyl groups, (meth) acrylates containing hydroxyl groups, (meth) acrylates containing amino groups, (meth) acrylates containing amino groups, (meth) groups containing epoxy groups ), Acrylate, N-acryl fluorenyl morpholine, vinyl ethers, etc. as other monomer components other than the aforementioned (meth) acrylic acid alkylene oxide.
作為較佳之一態樣，前述不含有機聚矽氧烷之含聚氧伸烷基鏈化合物為至少一部分具有(聚)環氧乙基鏈之化合物。藉由摻混前述含(聚)環氧乙基鏈之化合物，可提高與基礎底聚合物之相溶性，良好地抑制對被附體滲出，而可獲得低污染性之黏著劑組成物。其中尤其是在使用了PPG-PEG-PPG之嵌段共聚物時，可獲得低污染性優異之黏著劑。作為前述含聚環氧乙基鏈之化合物，(聚)環氧乙基鏈佔前述不含有機聚矽氧烷之含聚氧伸烷基鏈化合物的重量宜為5~90重量%，較宜為5~85重量%，更宜為5~80重量%，最宜為5~75重量%。As a preferred aspect, the aforementioned polyoxyalkylene-containing compound containing no organopolysiloxane is a compound having a (poly) ethylene oxide chain at least in part. By blending the aforementioned (poly) epoxyethyl chain-containing compound, the compatibility with the base polymer can be improved, the exudation of the adherend can be suppressed well, and an adhesive composition with low pollution can be obtained. Among them, when a block copolymer of PPG-PEG-PPG is used, an adhesive having excellent low staining properties can be obtained. As the aforementioned polyoxyethylene chain-containing compound, the weight of the (poly) oxyethyl chain to the aforementioned polyoxyalkylene group-containing compound containing no organic polysiloxane is preferably 5 to 90% by weight, and more preferably It is 5 to 85% by weight, more preferably 5 to 80% by weight, and most preferably 5 to 75% by weight.
又，前述不含有機聚矽氧烷之含聚氧伸烷基鏈化合物的市售品可列舉例如Adeka Pluonic 17R-4、Adeka Pluonic 25R-2(以上皆為ADEKA公司製)；Latemul PD-420、Latemul PD-420、Latemul PD-450、Emulgen 120(花王公司製)；Aqualon HS-10、KH-10、Noigen EA-87、EA-137、EA-157、EA-167、EA-177(以上為第一工業製藥公司製)等。Examples of the commercially available polyoxyalkylene chain-containing compound containing no organic polysiloxane include Adeka Pluonic 17R-4 and Adeka Pluonic 25R-2 (all of which are manufactured by ADEKA); Latemul PD-420 , Latemul PD-420, Latemul PD-450, Emulgen 120 (made by Kao Corporation); Aqualon HS-10, KH-10, Noigen EA-87, EA-137, EA-157, EA-167, EA-177 (above Manufactured by Daiichi Kogyo Pharmaceutical Co., Ltd.).
前述含氧伸烷基化合物之含量，相對於構成前述黏著劑組成物之黏著性聚合物(係主聚合物，例如(甲基)丙烯酸系聚合物、胺甲酸乙酯系聚合物、聚矽氧系聚合物等)100重量份，宜為0.01~5重量份，較宜為0.02~2重量份，更宜為0.03~1.6重量份，最宜為0.1~0.8重量份。若在前述範圍內，可易展現本發明所使用的黏著劑層(表面保護薄膜)之輕剝離性(再剝離性)，而較佳。The content of the oxygen-containing alkylene compound is relative to the adhesive polymer (based on the main polymer, such as (meth) acrylic polymer, urethane-based polymer, and polysiloxane) constituting the adhesive composition. 100 parts by weight, preferably 0.01 to 5 parts by weight, more preferably 0.02 to 2 parts by weight, more preferably 0.03 to 1.6 parts by weight, and most preferably 0.1 to 0.8 parts by weight. If it is in the said range, the light peelability (repeelability) of the adhesive layer (surface protection film) used by this invention can be shown easily, and it is preferable.
＜交聯劑＞ 本發明之表面保護薄膜中，前述黏著劑組成物宜含有交聯劑。又，在本發明中，可使用前述黏著劑組成物製成黏著劑層。例如，當前述黏著劑組成物為含有前述(甲基)丙烯酸系聚合物之丙烯酸系黏著劑時，藉由適當調節前述(甲基)丙烯酸系聚合物之構成單元、構成比率、交聯劑的選擇及添加比率等來進行交聯，可獲得耐熱性更優異的黏著劑層(表面保護薄膜)。<Crosslinking agent> In the surface protection film of this invention, it is preferable that the said adhesive composition contains a crosslinking agent. In the present invention, an adhesive layer can be formed using the aforementioned adhesive composition. For example, when the pressure-sensitive adhesive composition is an acrylic pressure-sensitive adhesive containing the (meth) acrylic polymer, the constitutional unit, the composition ratio, and the cross-linking agent of the (meth) acrylic polymer are appropriately adjusted. Selection, addition ratio, and the like are used for crosslinking to obtain an adhesive layer (surface protection film) having more excellent heat resistance.
本發明所使用之交聯劑可使用異氰酸酯化合物、環氧化合物、三聚氰胺系樹脂、吖丙啶衍生物及金屬螯合化合物等，尤其是使用異氰酸酯化合物或環氧化合物為較佳的態樣。又，該等化合物可單獨使用，亦可混合2種以上使用。As the cross-linking agent used in the present invention, an isocyanate compound, an epoxy compound, a melamine resin, an aziridine derivative, a metal chelate compound, and the like can be used. In particular, an isocyanate compound or an epoxy compound is preferably used. These compounds may be used alone or in combination of two or more.
前述異氰酸酯化合物可列舉例如二異氰酸三亞甲酯、二異氰酸伸丁酯、二異氰酸六亞甲酯(HDI)、二體酸二異氰酸酯等之脂肪族聚異氰酸酯類；伸環戊基二異氰酸酯、伸環己基二異氰酸酯、異佛酮二異氰酸酯(IPDI)、1,3-雙(異氰酸基甲基)環己烷等之脂環族異氰酸酯類；2,4-甲苯二異氰酸酯、4,4'-二苯甲烷二異氰酸酯、伸茬基二異氰酸酯(XDI)等芳香族異氰酸酯類；藉由脲甲酸酯鍵、縮二脲鍵、三聚異氰酸酯鍵、脲二酮鍵、脲鍵、碳二醯亞胺鍵、脲酮亞胺鍵及二三酮鍵等將前述異氰酸酯化合物進行改質所得之聚異氰酸酯改質體。市售品可列舉例如商品名Takenate 300S、Takenate 500、Takenate 600、Takenate D165N、Takenate D-178N(以上為武田藥品工業公司製)；Sumidur T80、Sumidur L、Desmodur N3400 (以上為住化Bayer Urethane公司製)；Millionate MR、Millionate MT、Coronate L、Coronate HL、Coronate HX(以上為日本聚胺甲酸乙酯工業公司製)等。該等異氰酸酯化合物可單獨使用，亦可混合2種以上使用，亦可將雙官能之異氰酸酯化合物與三官能以上之異氰酸酯化合物併用來使用。藉由併用交聯劑可使黏著性與耐反彈性(對於曲面的接著性)並存，而可獲得接著信耐性更優異的黏著劑層(表面保護薄膜)。Examples of the isocyanate compound include aliphatic polyisocyanates such as trimethylene diisocyanate, butylene diisocyanate, hexamethylene diisocyanate (HDI), and diisocyanate; dicyclopentyl Alicyclic isocyanates such as diisocyanate, cyclohexyl diisocyanate, isophorone diisocyanate (IPDI), 1,3-bis (isocyanatomethyl) cyclohexane; 2,4-toluene diisocyanate , 4,4'-diphenylmethane diisocyanate, stubble diisocyanate (XDI) and other aromatic isocyanates; Urea formate bond, biuret bond, trimeric isocyanate bond, uretdione bond, urea Bond, carbodiimide bond, uretonimine bond, and two A polyisocyanate modified body obtained by modifying the aforementioned isocyanate compound, such as a triketone bond. Commercial products include, for example, the trade names Takenate 300S, Takenate 500, Takenate 600, Takenate D165N, Takenate D-178N (the above are manufactured by Takeda Pharmaceutical Industry Co., Ltd.); Sumidur T80, Sumidur L, Desmodur N3400 (the above are provided by Sumika Bayer Urethane Corporation ); Millionate MR, Millionate MT, Coronate L, Coronate HL, Coronate HX (the above are manufactured by Japan Polyurethane Industry Corporation), etc. These isocyanate compounds may be used singly or in combination of two or more kinds. A difunctional isocyanate compound and a trifunctional or more isocyanate compound may also be used in combination. By using a cross-linking agent in combination, cohesion and rebound resistance (adhesion to curved surfaces) can coexist, and an adhesive layer (surface protection film) having more excellent adhesion resistance can be obtained.
前述環氧化合物可列舉例如N,N,N',N'-四環氧丙基-間茬二胺(商品名TETRAD-X，三菱瓦斯化學公司製)或1,3-雙(N,N-二縮環氧丙基胺基甲基)環己烷(商品名TETRAD-C，三菱瓦斯化學公司製)等。Examples of the epoxy compound include N, N, N ', N'-tetraepoxypropyl-stubble diamine (trade name TETRAD-X, manufactured by Mitsubishi Gas Chemical Co., Ltd.) or 1,3-bis (N, N -Diglycidylaminoamino) cyclohexane (trade name TETRAD-C, manufactured by Mitsubishi Gas Chemical Co., Ltd.) and the like.
作為前述三聚氰胺系樹脂可列舉六羥甲基三聚氰胺等。作為吖丙啶衍生物可列舉例如市售品之商品名 HDU、TAZM、TAZO (以上為相互藥工公司製)等。Examples of the melamine-based resin include hexamethylolmelamine. Examples of the aziridine derivative include commercially available products such as HDU, TAZM, and TAZO (the above are manufactured by Muta Pharmaceutical Co., Ltd.).
以前述金屬螯合化合物來說，作為金屬成分可列舉鋁、鐵、錫、鈦、鎳等，作為螯合成分可列舉乙炔、乙醯乙酸甲酯、乳酸乙酯等。Examples of the metal chelate compound include aluminum, iron, tin, titanium, and nickel as the metal component, and examples of the chelate component include acetylene, methyl ethyl acetate, and ethyl lactate.
本發明所使用之交聯劑之含量相對於例如前述(甲基)丙烯酸系聚合物100重量份，宜為0.01~20重量份，較宜為0.1~15重量份，更宜為0.5~10重量份，最宜為1~8重量份。當前述含量比0.01重量份還少時，會有利用交聯劑之交聯形成並不充分，造成所獲得之黏著劑組合物之凝聚力變小，而無法獲得充分之耐熱性的情況，並亦造成殘膠之原因之傾向。另一方面，當含量超過20重量份時，聚合物之凝聚力變大而流動性降低，對被附體(例如偏光板)之潤濕會不充分，而有造成在被附體與黏著劑層(黏著劑組成物層)之間產生膨脹之原因之傾向。又，該等交聯劑可單獨使用，亦可混合2種以上使用。The content of the cross-linking agent used in the present invention is preferably 0.01 to 20 parts by weight, more preferably 0.1 to 15 parts by weight, and more preferably 0.5 to 10 parts by weight relative to 100 parts by weight of the aforementioned (meth) acrylic polymer. Parts, most preferably 1 to 8 parts by weight. When the foregoing content is less than 0.01 parts by weight, the cross-linking formation using the cross-linking agent may be insufficient, causing the cohesive force of the obtained adhesive composition to be reduced, and sufficient heat resistance may not be obtained. The tendency to cause residues. On the other hand, when the content exceeds 20 parts by weight, the cohesion of the polymer becomes large and the fluidity decreases, and the wetting of the adherend (for example, a polarizing plate) may be insufficient, which may cause the adherend and the adhesive layer. (Adhesive composition layer) tends to cause swelling. These crosslinking agents may be used alone or in combination of two or more.
＜交聯觸媒＞ 前述黏著劑組成物中，還可含有用以使上述任一種交聯反應更有效進行之交聯觸媒。所述交聯觸媒可使用例如二月桂酸二丁錫、二月桂酸二辛錫等之錫系觸媒；參(乙醯丙酮)鐵、參(己-2,4-二酮)鐵、參(庚-2,4-二酮)鐵、參(庚-3,5-二酮)鐵、參(5-甲基己-2,4-二酮)鐵、參(辛-2,4-二酮)鐵、參(6-甲基庚-2,4-二酮)鐵、參(2,6-二甲基庚-3,5-二酮)鐵、參(壬-2,4-二酮)鐵、參(壬-4,6-二酮)鐵、參(2,2,6,6-四甲基庚-3,5-二酮)鐵、參(十三烷-6,8-二酮)鐵、參(1-苯基丁-1,3-二酮)鐵、參(六氟乙醯丙酮)鐵、參(乙醯乙酸乙酯)鐵、參(乙醯乙酸-正丙酯)鐵、參(乙醯乙酸異丙酯)鐵、參(乙醯乙酸-正丁酯)鐵、參(乙醯乙酸-二級丁酯)鐵、參(乙醯乙酸-三級丁酯)鐵、參(丙醯基乙酸甲酯)鐵、參(丙醯基乙酸乙酯)鐵、參(丙醯乙酸-正丙酯)鐵、參(丙醯乙酸異丙酯)鐵、參(丙醯乙酸-正丁酯)鐵、參(丙醯乙酸-二級丁酯)鐵、參(丙醯乙酸-三級丁酯)鐵、參(乙醯乙酸苄酯)鐵、參(丙二酸二甲酯)鐵、參(丙二酸二乙酯)鐵、三甲氧基鐵、三乙氧基鐵、三異丙氧基鐵、氯化鐵(III)等之鐵系觸媒。該等觸媒可使用1種，亦可將2種以上併用。<Crosslinking Catalyst> The adhesive composition may further include a crosslinking catalyst for making any of the above-mentioned crosslinking reactions more efficient. As the cross-linking catalyst, for example, tin-based catalysts such as dibutyltin dilaurate, dioctyltin dilaurate, etc .; ginseng (acetone acetone) iron, ginseng (hexano-2,4-dione) iron, Ginseng (hepta-2,4-dione) iron, ginseng (hepta-3,5-dione) iron, ginseng (5-methylhexa-2,4-dione) iron, ginseng (oct-2,4 -Dione) iron, ginseng (6-methylheptan-2,4-dione) iron, ginseng (2,6-dimethylheptan-3,5-dione) iron, ginseng (non-2,4 -Dione) iron, ginseng (non-4,6-dione) iron, ginseng (2,2,6,6-tetramethylheptan-3,5-dione) iron, ginseng (tridecane-6 , 8-diketone) iron, ginseng (1-phenylbutane-1,3-diketone) iron, ginseng (hexafluoroacetamidine acetone) iron, ginseng (ethyl acetate) iron, ginseng (acetic acid) -N-propyl) iron, ginseng (isopropyl acetoacetate) iron, ginseng (ethyl acetic acid-n-butyl) iron, ginseng (ethyl acetic acid-secondary butyl) iron, ginseng (acetic acid-three Grade butyl) iron, ginseng (methyl propyl acetate) iron, ginseng (ethyl propyl acetate) iron, ginseng (propyl acetate-n-propyl) iron, ginseng (isopropyl propyl acetate) iron , Ginseng (propionate-n-butyl) iron, ginseng (propionate-secondary butyl) iron, ginseng (propionate-tertiary butyl) iron, ginseng (benzylacetate) iron, ginseng (Dimethyl malonate) iron Reference (diethyl malonate) iron, trimethoxy iron, triethoxy iron triisopropoxide, iron (III) chloride, etc. The iron-based catalyst. These catalysts may be used singly or in combination of two or more kinds.
前述交聯觸媒之含量並無特別限制，但相對於例如前述(甲基)丙烯酸系聚合物100重量份，宜設為0.0001~1重量份，較宜為0.001~0.5質量份。若在前述範圍內，則形成黏著劑層時的交聯反應之速度快，黏著劑組成物之可使用期限也會變長，而為較佳態樣。The content of the cross-linking catalyst is not particularly limited, but it is preferably 0.0001 to 1 part by weight, and more preferably 0.001 to 0.5 part by mass, based on 100 parts by weight of the (meth) acrylic polymer. If it is within the aforementioned range, the speed of the cross-linking reaction when the adhesive layer is formed is fast, and the useful life of the adhesive composition becomes long, which is a preferable aspect.
並且，在前述黏著劑組成物中亦可含有其他眾所周知之添加劑，例如可根據使用之用途適當添加滑劑、著色劑、顏料等之粉體；塑化劑、黏著賦予劑、低分子量聚合物、表面潤滑劑、調平劑、抗氧化劑、防腐蝕劑、光穩定劑、紫外線吸收劑、聚合抑制劑、矽烷耦合劑、抗靜電劑、無機或有機充填劑、金屬粉、粒子狀、箔狀物等。In addition, the aforementioned adhesive composition may also contain other well-known additives, for example, powders such as a slip agent, a colorant, and a pigment may be appropriately added according to the purpose of use; a plasticizer, an adhesion imparting agent, a low molecular weight polymer, Surface lubricants, leveling agents, antioxidants, anticorrosives, light stabilizers, UV absorbers, polymerization inhibitors, silane coupling agents, antistatic agents, inorganic or organic fillers, metal powder, particles, foils, etc. .
＜附分離件之光學用表面保護薄膜＞ 本發明之附分離件之光學用表面保護薄膜(表面保護薄膜)是將前述黏著劑層形成在基材薄膜之至少單面而成者，此時，一般來說黏著劑組成物之交聯是在塗佈黏著劑組成物後進行，但亦可將由交聯後的黏著劑組成物所構成之黏著劑層轉印至基材薄膜等。<Surface Protective Film for Optical with Separator> The optical surface protective film (surface protection film) with a separator of the present invention is formed by forming the aforementioned adhesive layer on at least one side of a base film. At this time, Generally, the cross-linking of the adhesive composition is performed after the adhesive composition is applied, but an adhesive layer composed of the cross-linked adhesive composition may also be transferred to a substrate film or the like.
又，在基材薄膜上形成黏著劑層之方法並無特別限制，例如可藉由將前述黏著劑組成物(溶液)塗佈在基材薄膜上，並將聚合溶劑等乾燥去除而於基材薄膜上形成黏著劑層來製作。其後，亦可為了黏著劑層成分移轉之調整或交聯反應之調整等而進行養護。又，將黏著劑組成物塗佈在基材薄膜上以製作表面保護薄膜時，亦可在前述黏著劑組成物中新添加聚合溶劑以外之1種以上的溶劑，使其能均勻地塗佈在基材薄膜上。The method for forming the adhesive layer on the substrate film is not particularly limited. For example, the adhesive composition (solution) can be coated on the substrate film, and the polymerization solvent and the like can be dried and removed on the substrate. An adhesive layer is formed on the film. Thereafter, curing may be performed for adjustment of the components of the adhesive layer, adjustment of the crosslinking reaction, and the like. In addition, when an adhesive composition is coated on a base film to prepare a surface protection film, one or more solvents other than a polymerization solvent may be newly added to the adhesive composition, so that it can be uniformly applied to the adhesive composition. On the substrate film.
又，作為製造本發明之表面保護薄膜時之黏著劑層形成方法，可使用眾所周知之用於製造黏著膠帶類的方法。具體來說，可列舉例如輥塗、凹版塗佈、逆輥式塗佈、輥刷、噴塗、氣刀式塗佈法、利用模塗機等之擠製塗佈法等。As a method for forming an adhesive layer when producing the surface protective film of the present invention, a known method for producing an adhesive tape can be used. Specific examples include roll coating, gravure coating, reverse roll coating, roll brushing, spray coating, air knife coating, and extrusion coating using a die coater.
本發明之表面保護薄膜中，通常前述黏著劑層之厚度為3~100μm，而以製作成5~50μm左右為佳。黏著劑層之厚度若在前述範圍內，可容易取得適當的再剝離性與接著性之平衡，故較佳。In the surface protection film of the present invention, the thickness of the aforementioned adhesive layer is usually 3 to 100 μm, and it is preferably made to be about 5 to 50 μm. If the thickness of the adhesive layer is within the aforementioned range, an appropriate balance between re-peelability and adhesiveness can be easily achieved, so it is preferable.
又，本發明之表面保護薄膜之總厚度宜為8~300μm，較宜為10~200μm，最宜為20~100μm。若為前述範圍內，則黏著特性(再剝離性、接著性等)、作業性、外觀特性優異，而為較佳態樣。另，前述總厚度是指包含基材薄膜、黏著劑層、分離件及其他層等之全部的層之厚度的合計。In addition, the total thickness of the surface protection film of the present invention is preferably 8 to 300 μm, more preferably 10 to 200 μm, and most preferably 20 to 100 μm. If it is in the said range, it is excellent in adhesive characteristics (re-peelability, adhesiveness, etc.), workability | operativity, and external appearance characteristics. In addition, the said total thickness means the total thickness of all the layers including a base film, an adhesive layer, a separator, and other layers.
＜分離件＞ 本發明表面保護薄膜係一於基材薄膜的至少單面具有黏著劑層、且於前述基材薄膜之與黏著劑層接觸之面為相反之面具有分離件者；該表面保護薄膜之特徵在於：前述分離件具有脫模層與基材，前述分離件之霧度在90%以上，且全光線透射率在50%以下。前述分離件係為了保護黏著劑層之黏著面而於黏著劑層表面貼合分離件，尤其是分離件具有如特定霧度及全光線透射率之光學特性，故可在將附分離件之光學用表面保護薄膜於光學構件上正確地進行位置調整，並於位置調整後將已剝離了分離件之光學用表面保護薄膜貼附(積層)於光學構件表面，乃為較佳態樣。<Separator> The surface protection film of the present invention is a surface protection film having an adhesive layer on at least one side of the substrate film, and having a separator on the opposite side of the substrate film in contact with the adhesive layer; the surface protection The film is characterized in that the aforementioned separating member has a release layer and a substrate, and the haze of the aforementioned separating member is above 90%, and the total light transmittance is below 50%. The aforementioned separating member is for attaching the separating member on the surface of the adhesive layer in order to protect the adhesive surface of the adhesive layer. In particular, the separating member has optical characteristics such as specific haze and full light transmittance, so the It is preferable that the surface protection film is used to correctly adjust the position on the optical member, and after the position adjustment, the optical surface protection film from which the separation member has been peeled off is attached (laminated) to the surface of the optical member, which is a preferable aspect.
前述分離件之霧度在90%以上、且全光線透射率在50%以下(0~50%)，較佳為霧度在92%以上、且全光線透射率為5~50%，更佳為霧度在94%以上、且全光線透射率為8~48%，且以霧度在96%以上、且全光線透射率為10~45%更佳。藉由前述分離件之霧度在90%以上、且全光線透射率在50%以下，可使附分離件之光學用表面保護薄膜對光學構件表面之位置調整性優異，且在位置調整後藉由剝離分離件可以正確位置貼合於光學構件表面，而為較佳態樣。尤其是全光線透射率為50%以下(0~50%)，宜為48%以下，較佳為45%以下，40%以下更佳，尤宜為30%以下。藉由全光線透射率低可容易調整附分離件之光學用表面保護薄膜對光學構件表面之位置，而具優異位置調整性及作業性，實為理想。The haze of the aforementioned separator is above 90%, and the total light transmittance is below 50% (0-50%), preferably the haze is above 92%, and the total light transmittance is 5-50%, more preferably The haze is more than 94%, and the total light transmittance is 8 to 48%, and the haze is more than 96%, and the total light transmittance is more preferably 10 to 45%. The above-mentioned separator has a haze of 90% or more and a total light transmittance of 50% or less, which can make the position of the optical surface protection film with a separator on the surface of the optical member excellent, and borrow it after the position adjustment. The peeling and separating member can be attached to the surface of the optical member in a correct position, which is a preferable aspect. In particular, the total light transmittance is 50% or less (0-50%), preferably 48% or less, preferably 45% or less, more preferably 40% or less, and most preferably 30% or less. With a low total light transmittance, it is easy to adjust the position of the optical surface protection film with a separator on the surface of the optical member, and it is ideal to have excellent position adjustment and workability.
＜基材＞ 前述基材可適宜用於紙或塑膠薄膜。該薄膜只要為可保護前述黏著劑層之薄膜則無特別限定，例如可舉聚乙烯薄膜、聚丙烯薄膜、聚丁烯薄膜、聚丁二烯薄膜、聚甲戊烯薄膜、聚氯乙烯薄膜、氯乙烯共聚物薄膜、聚對苯二甲酸乙二酯薄膜、聚萘二甲酸乙二酯薄膜、聚對苯二甲酸丁二酯薄膜、聚胺甲酸乙酯薄膜、乙烯-乙酸乙烯酯共聚物薄膜等，尤以使用聚酯系薄膜之聚對苯二甲酸乙二酯(PET)薄膜、聚萘二甲酸乙二酯薄膜、聚對苯二甲酸丁二酯薄膜等為較佳態樣。<Substrate> The aforementioned substrate can be suitably used for paper or plastic film. The film is not particularly limited as long as it can protect the aforementioned adhesive layer, and examples thereof include polyethylene films, polypropylene films, polybutene films, polybutadiene films, polymethene films, polyvinyl chloride films, Vinyl chloride copolymer film, polyethylene terephthalate film, polyethylene naphthalate film, polybutylene terephthalate film, polyurethane film, ethylene-vinyl acetate copolymer film In particular, a polyethylene terephthalate (PET) film, a polyethylene naphthalate film, a polybutylene terephthalate film, etc. using a polyester-based film is preferable.
將前述分離件之霧度調製成90%以上、且將全光線透射率調製成50%以下之方法並無特別限定，可使用眾所皆知之方法，例如可於構成分離件之基材設置孔洞、或添加著色材、將基材表面粗化等來調製。具體而言可舉日本特開平9-12759所記載之方法等。The method for modulating the haze of the aforementioned separator to 90% or more and the total light transmittance to 50% or less is not particularly limited, and a well-known method can be used, for example, it can be installed on the substrate constituting the separator Holes, or adding a coloring material, roughening the surface of the substrate, and the like are prepared. Specifically, the method described in Japanese Patent Application Laid-Open No. 9-12759 may be mentioned.
前述基材之厚度通常為5~200μm，較佳為10~100μm左右。若在前述範圍內，則具優異之對黏著劑層之貼合作業性、分離件對黏著劑層之剝離性及作業性而為佳。The thickness of the aforementioned substrate is usually 5 to 200 μm, and preferably about 10 to 100 μm. If it is within the foregoing range, it is better to have excellent adhesion property to the adhesive layer, peelability and workability of the separator to the adhesive layer.
前述基材可因應需要在其表面施加電暈放電處理等之各種表面處理，或施加壓紋加工等之各種表面加工。還可因應需要摻混充填劑(無機充填劑、有機充填劑等)、抗老化劑、抗氧化劑、紫外線吸收劑、抗靜電劑、滑劑、塑化劑、著色劑(顏料、染料等)等各種添加劑。The surface of the substrate may be subjected to various surface treatments, such as corona discharge treatment, or various surface treatments, such as embossing, if necessary. Fillers (inorganic fillers, organic fillers, etc.), anti-aging agents, antioxidants, ultraviolet absorbers, antistatic agents, lubricants, plasticizers, colorants (pigments, dyes, etc.), etc. Various additives.
前述基材之市售品例如可舉DIAFOIL W100、DIAFOIL W400(以上、三菱樹脂公司製)、Lumirror ＃50-EA3S(TORAY INDUSTRIES, INC.製)、CQ952(KOLON公司製)等。Examples of commercially available products of the aforementioned substrate include DIAFOIL W100, DIAFOIL W400 (above, manufactured by Mitsubishi Resins), Lumirror # 50-EA3S (manufactured by TORAY INDUSTRIES, INC.), And CQ952 (manufactured by KOLON).
＜脫模層＞ 前述脫模層對前述基材具有密著性，並且對前述黏著劑層具有剝離性，可由脫模劑組成物形成。前述脫模劑組成物並無特別限制，可使用例如二甲基矽氧烷或二苯基矽氧烷等之聚矽氧化合物；聚矽氧樹脂、氟樹脂、ASHIO RESIN等之長鏈烷基系化合物等。<Release layer> The said release layer has adhesiveness with respect to the said base material, and has peelability with respect to the said adhesive layer, and can be formed from a release agent composition. The aforementioned release agent composition is not particularly limited, and a polysiloxane compound such as dimethylsiloxane or diphenylsiloxane; a long-chain alkyl group such as a polysiloxane resin, a fluororesin, and ASHIO RESIN can be used. Department of compounds and so on.
並且，在前述脫模劑組成物中亦可含有其他眾所周知之添加劑，例如可因應使用之用途適當添加抗靜電劑、著色劑、顏料等之粉體；界面活性劑、塑化劑、黏著賦予劑、低分子量聚合物、表面潤滑劑、調平劑、抗氧化劑、防腐蝕劑、光穩定劑、紫外線吸收劑、聚合抑制劑、矽烷耦合劑、無機或有機充填劑、金屬粉、粒子狀等。In addition, the aforementioned release agent composition may also contain other well-known additives, for example, powders such as an antistatic agent, a colorant, and a pigment may be appropriately added according to the use; a surfactant, a plasticizer, and an adhesion-imparting agent. , Low molecular weight polymers, surface lubricants, leveling agents, antioxidants, corrosion inhibitors, light stabilizers, UV absorbers, polymerization inhibitors, silane coupling agents, inorganic or organic fillers, metal powders, particles, etc.
＜分離件之製作＞ 前述分離件係於前述基材上使用前述脫模劑組成物而形成者。<Preparation of Separator> The separator is formed by using the mold release agent composition on the substrate.
於基材上形成脫模層之方法並無特別限制，例如可藉由將前述脫模劑組成物之溶液塗佈於基材，並將聚合溶劑等乾燥去除而於基材上形成脫模層來製作。其後，亦可為了將脫模層成分移轉之調整等而進行養護。又，將脫模劑組成物塗佈於基材上以製作脫模層時，亦可於前述脫模劑組成物中新添加聚合溶劑以外之1種以上的溶劑，使其能均勻地塗佈於基材上。The method of forming a release layer on a substrate is not particularly limited, and for example, a release layer can be formed on the substrate by coating the substrate with a solution of the release agent composition and drying and removing a polymerization solvent. To make. Thereafter, curing may be performed for adjustment or the like of transferring the components of the release layer. When the release agent composition is coated on a substrate to prepare a release layer, one or more solvents other than a polymerization solvent may be added to the release agent composition to uniformly apply the release agent composition. On the substrate.
又，前述脫模層之形成方法可使用眾所周知之用於脫模層製造之方法。具體來說，可列舉例如輥塗、凹版塗佈、逆輥式塗佈、輥刷、噴塗、氣刀式塗佈法、利用模塗機等之擠製塗佈法等。As the method for forming the release layer, a well-known method for producing a release layer can be used. Specific examples include roll coating, gravure coating, reverse roll coating, roll brushing, spray coating, air knife coating, and extrusion coating using a die coater.
前述脫模層之厚度，典型上為1~200nm，宜為5~100nm，較宜為10~50nm。脫模層之厚度若過小，剝離分離件會變得困難，因此可能會使光學用表面保護薄膜貼合作業變得困難。另一方面，若過厚，會有影響到光學用表面保護薄膜之黏著劑層的污染性之情況。The thickness of the aforementioned release layer is typically 1 to 200 nm, preferably 5 to 100 nm, and more preferably 10 to 50 nm. If the thickness of the release layer is too small, it may become difficult to peel off the separator, which may make it difficult to apply the surface protective film for optics. On the other hand, if it is too thick, the contamination of the adhesive layer of the optical surface protection film may be affected.
前述分離件之市售品例如可舉例如Crisper K7211-50μm、Crisper K7211-38μm、Crisper K7011-50μm、Crisper K7011-38μm(以上、東洋紡公司製)等。Examples of commercially available products of the separator include, for example, Crisper K7211-50 μm, Crisper K7211-38 μm, Crisper K7011-50 μm, and Crisper K7011-38 μm (above, manufactured by Toyobo Co., Ltd.).
＜光學用表面保護薄膜與分離件之貼合(附分離件之光學用表面保護薄膜之製作)＞ 本發明之附分離件之光學用表面保護薄膜之形態是將光學用表面保護薄膜之黏著劑層與分離件之脫模層貼合而成。貼合作業可使用眾所皆知之方法，例如可舉使用層合機(MCK(股)公司製、MRK-600)來貼合光學用表面保護薄膜與分離件之方式。＜ Lamination of optical surface protection film and separator (production of optical surface protection film with separator) ＞ The form of the optical surface protection film with separator of the present invention is an adhesive for optical surface protection film The layer is laminated with the release layer of the separation piece. A well-known method can be used in the bonding industry, for example, a method of bonding a surface protective film for optical use and a separator using a laminator (MCK (Stock) Co., Ltd., MRK-600) can be mentioned.
＜光學構件＞ 在本發明中，可將從前述附分離件之光學用表面保護薄膜的黏著劑層表面剝離前述分離件後之光學用表面保護薄膜貼附至光學構件，以保護光學構件。前述分離件具優異緩衝性，故不易產生凹痕，又前述光學用表面保護薄膜因外觀等級(外觀性)優異，故可使用於加工、輸送、出貨時等之表面保護用途(表面保護薄膜)，而為有用於保護前述光學構件(偏光板等)的表面者。 實施例<Optical member> In the present invention, the optical surface protective film obtained by peeling the separator from the surface of the adhesive layer of the optical surface protective film with a separator may be attached to the optical member to protect the optical member. The above-mentioned separator has excellent cushioning properties, so it is not easy to generate dents, and the aforementioned optical surface protection film has excellent appearance level (appearance), so it can be used for surface protection applications such as processing, transportation, and shipping (surface protection film) ), And there is a surface for protecting the aforementioned optical member (polarizing plate, etc.). Examples
以下說明與本發明有關的數個實施例，但並非意圖將本發明限定在相關具體例所示者。另，以下之說明中的「份」及「%」只要無特別表明，即為重量基準。並已於表中顯示摻混量(添加量)。The following describes several embodiments related to the present invention, but it is not intended to limit the present invention to those shown in the related specific examples. In addition, "part" and "%" in the following description are based on weight unless otherwise specified. The blending amount (addition amount) is shown in the table.
又，以下說明中的各特性分別如下所述進行測定或評估。In addition, each characteristic in the following description is measured or evaluated as described below.
＜霧度之測定＞ 霧度(Haze)之測定可依循JIS K7136「塑膠-透明材料之霧度求取方法」所規定之方法，利用霧度計(村上色彩技術研究所製、HM-150型)來進行。<Measurement of Haze> Haze can be measured in accordance with the method specified in JIS K7136 "Method for Obtaining Haze of Plastic-Transparent Materials" using a haze meter (manufactured by Murakami Color Technology Research Institute, HM-150 type) ) To proceed.
＜全光線透射率之測定＞ 全光線透射率之測定可依循JIS K7361「塑膠-透明材料之全光線透射率的試験方法」所規定之方法，利用霧度計(村上色彩技術研究所製、HM-150型)來進行。＜ Measurement of total light transmittance ＞ The measurement of total light transmittance can be performed in accordance with the method specified in JIS K7361 "Test method for total light transmittance of plastic-transparent materials" using a haze meter (Murakami Color Technology Research Institute, HM -150 type).
＜(甲基)丙烯酸系聚合物之玻璃轉移溫度(Tg)之測定＞ 玻璃轉移溫度Tg(℃)是使用下述文獻值作為由各單體形成之均聚物的玻璃轉移溫度Tgn(℃)，並由下述式求出。 式：1/(Tg+273)=Σ[Wn/(Tgn+273)] (式中，Tg(℃)表示共聚物之玻璃轉移溫度，Wn(-)表示各單體之重量分率，Tgn(℃)表示各單體之均聚物的玻璃轉移溫度，n表示各單體之種類)。 文獻值： 丙烯酸2-乙基己酯(2EHA)：-70℃ 丙烯酸丁酯(BA)：-55℃ 丙烯酸2-羥基乙酯(HEA)：-15℃ 丙烯酸(AA)：106℃ 另，文獻值是參照了「丙烯酸樹脂之合成·設計與新用途開發」(中央經營開發中心出版部發行)。<Measurement of glass transition temperature (Tg) of (meth) acrylic polymer> The glass transition temperature Tg (° C) is the glass transition temperature Tgn (° C) of the homopolymer formed from each monomer using the following literature values. And calculated from the following formula. Formula: 1 / (Tg + 273) = Σ [Wn / (Tgn + 273)] (where Tg (℃) represents the glass transition temperature of the copolymer, Wn (-) represents the weight fraction of each monomer, Tgn (° C) represents the glass transition temperature of the homopolymer of each monomer, and n represents the type of each monomer). Literature value: 2-ethylhexyl acrylate (2EHA): -70 ° C Butyl acrylate (BA): -55 ° C 2-hydroxyethyl acrylate (HEA): -15 ° C Acrylic acid (AA): 106 ° C The value refers to "Synthesis, Design and New Application Development of Acrylic Resin" (published by the Publishing Department of the Central Management Development Center).
＜(甲基)丙烯酸系聚合物之重量平均分子量(Mw)之測定＞ 所使用的(甲基)丙烯酸系聚合物之重量平均分子量(Mw)使用東曹股份有限公司製之GPC裝置(HLC-8220GPC)進行測定。測定條件如下： 樣品濃度：0.2重量%(THF溶液) 樣品注入量：10μl 溶離液：THF 流速：0.6ml/min 測定溫度：40℃ 管柱： 樣品管柱：TSKguardcolumn SuperHZ-H(1支)+TSKgel SuperHZM-H(2支) 參考管柱：TSKgel SuperH-RC(1支) 檢測器：示差折射計(RI) 另，重量平均分子量是以聚苯乙烯換算值求出。又，測定數量平均分子量(Mn)時也依與重量平均分子量(Mw)同樣方式進行了測定。<Measurement of weight average molecular weight (Mw) of (meth) acrylic polymer> The weight average molecular weight (Mw) of (meth) acrylic polymer used was a GPC device (HLC- 8220GPC). The measurement conditions are as follows: Sample concentration: 0.2% by weight (THF solution) Sample injection volume: 10 μl Eluent: THF Flow rate: 0.6ml / min Measurement temperature: 40 ° C Column: Sample column: TSKguardcolumn SuperHZ-H (1) + TSKgel SuperHZM-H (2 pcs.) Reference column: TSKgel SuperH-RC (1 pc.) Detector: Differential refractometer (RI) In addition, the weight-average molecular weight is calculated by polystyrene conversion. The number average molecular weight (Mn) was also measured in the same manner as the weight average molecular weight (Mw).
＜可否自動貼合＞ 以不切斷附分離件之光學用表面保護薄膜的分離件之方式僅將表面保護薄膜裁切成100mm×110mm。接著以與經裁切之表面保護薄膜的四個角落的各角相接，於分離件設置直徑5mm之孔。 依上述方法，於精密單片貼合機(Climb Products(股)社製、SE650naa)之其中一吸附板(以下表記為吸附板1)上以分離件側朝上之方式設置經開孔之附分離件之光學用表面保護薄膜，並於另一吸附板(以下表記為吸附板2)上設置100mm×110mm之玻璃。使吸附板1旋轉並疊放於吸附板2上，然後用附帶有精密單片貼合機之CCD相機調整吸附板2之位置，使附分離件之光學用表面保護薄膜之孔不與玻璃重疊。調整位置後(參照圖2)，先暫時使吸附板1從吸附板2離開，剝離分離件，再使吸附板1移動至吸附板2上，並以輥壓力8kgf/cm2 、輥速度5mm/秒將光學用表面保護薄膜貼合於玻璃表面。 可否自動貼合(評估)係將可自動地將光學用表面保護薄膜正確地調整位置並貼合之情況評估為○，無法自動地將光學用表面保護薄膜正確地調整位置之情況評估為×。＜ Can automatic lamination be possible? Only cut the surface protective film to 100mm × 110mm without cutting the separator of the optical surface protective film with the separator. Next, a hole with a diameter of 5 mm is set in the separator with the corners contacting the four corners of the cut surface protection film. According to the above method, an attached hole with an opening is set on one of the adsorption plates (hereinafter referred to as adsorption plate 1) of a precision single-chip laminating machine (Climb Products, SE650naa) with the separator side facing upward. The optical surface protection film of the separator is provided with another 100 mm × 110 mm glass on another adsorption plate (hereinafter referred to as the adsorption plate 2). The adsorption plate 1 is rotated and stacked on the adsorption plate 2, and then the position of the adsorption plate 2 is adjusted by a CCD camera with a precision single-chip laminating machine so that the holes of the optical surface protection film with the separator do not overlap the glass . After adjusting the position (refer to Figure 2), first temporarily remove the adsorption plate 1 from the adsorption plate 2 and peel off the separator, and then move the adsorption plate 1 onto the adsorption plate 2 with a roller pressure of 8 kgf / cm 2 and a roller speed of 5 mm / A surface protective film for optics was bonded to a glass surface in seconds. Whether or not the automatic lamination is possible (evaluation) means that the situation where the surface protective film for optical use can be correctly adjusted and attached automatically is evaluated as ○, and the situation where the surface protective film for optical use cannot be adjusted correctly is automatically evaluated as ×.
＜(甲基)丙烯酸系聚合物(A)之調製＞ 將丙烯酸2-乙基己酯(2EHA)100重量份、丙烯酸2-羥基乙酯(HEA)4重量份、作為聚合起始劑之2,2'-偶氮雙異丁腈(AIBN)0.2重量份、乙酸乙酯205重量份饋入具備攪拌葉片、溫度計、氮氣導入管、冷卻器的4口燒瓶中，一邊緩慢地攪拌一邊導入氮氣，將燒瓶內之液溫維持在63℃附近並進行約4小時聚合反應，而調製成(甲基)丙烯酸系聚合物(A)溶液(約35重量%)。前述(甲基)丙烯酸系聚合物(A)之重量平均分子量(Mw)為65萬，玻璃轉移溫度(Tg)為-68℃。<Preparation of (meth) acrylic polymer (A)> 100 parts by weight of 2-ethylhexyl acrylate (2EHA), 4 parts by weight of 2-hydroxyethyl acrylate (HEA), and 2 as a polymerization initiator , 2'-Azobisisobutyronitrile (AIBN) 0.2 parts by weight and 205 parts by weight of ethyl acetate were fed into a 4-neck flask equipped with a stirring blade, a thermometer, a nitrogen introduction tube, and a cooler, and nitrogen was introduced while slowly stirring The temperature of the liquid in the flask was maintained at about 63 ° C., and a polymerization reaction was performed for about 4 hours to prepare a (meth) acrylic polymer (A) solution (about 35% by weight). The weight average molecular weight (Mw) of the (meth) acrylic polymer (A) was 650,000, and the glass transition temperature (Tg) was -68 ° C.
＜(甲基)丙烯酸系聚合物(B)之調製＞ 將丙烯酸丁酯(BA)95重量份、丙烯酸(AA)5重量份、作為聚合起始劑之2,2'-偶氮雙異丁腈0.1重量份、乙酸乙酯234重量份饋入具備攪拌葉片、溫度計、氮氣導入管、冷卻器的4口燒瓶中，一邊緩慢地攪拌一邊導入氮氣，將燒瓶內之液溫維持在65℃附近並進行6小時聚合反應，而調製成(甲基)丙烯酸系聚合物(B)溶液(30重量%)。前述(甲基)丙烯酸系聚合物(B)之重量平均分子量(Mw)為110萬，玻璃轉移溫度(Tg)為-47℃。<Preparation of (meth) acrylic polymer (B)> 95 parts by weight of butyl acrylate (BA), 5 parts by weight of acrylic acid (AA), and 2,2'-azobisisobutyl as a polymerization initiator 0.1 parts by weight of nitrile and 234 parts by weight of ethyl acetate were fed into a 4-necked flask equipped with a stirring blade, a thermometer, a nitrogen introduction tube, and a cooler. Nitrogen was introduced while slowly stirring, and the temperature of the liquid in the flask was maintained near 65 ° C. A polymerization reaction was performed for 6 hours to prepare a (meth) acrylic polymer (B) solution (30% by weight). The weight average molecular weight (Mw) of the (meth) acrylic polymer (B) was 1.1 million, and the glass transition temperature (Tg) was -47 ° C.
[丙烯酸系黏著劑(1)溶液之調製] 將上述(甲基)丙烯酸系聚合物(A)溶液(35重量%)以乙酸乙酯稀釋成29重量%，並在此溶液500重量份(固體成分100重量份)中，添加作為交聯劑之3官能異氰酸酯化合物之二異氰酸六亞甲酯之三聚異氰酸酯體(Coronate HX：C/HX，日本聚胺甲酸乙酯公司製)4重量份(固體成分4重量份)、作為交聯觸媒之二月桂酸二丁錫(表2中之「Sn」，1重量%乙酸乙酯溶液)1.5重量份(固體成分0.015重量份)後，維持在25℃附近並進行約1分鐘混合攪拌，而調製成丙烯酸系黏著劑(1)溶液。[Preparation of Acrylic Adhesive (1) Solution] The above (meth) acrylic polymer (A) solution (35% by weight) was diluted with ethyl acetate to 29% by weight, and 500 parts by weight of the solution (solid 100 parts by weight of components), 4 parts by weight of a trimeric isocyanate body (Coronate HX: C / HX, manufactured by Japan Polyurethane Co., Ltd.) of a trifunctional isocyanate compound, a diisocyanuric acid methyl ester, and a cross-linking agent were added. Parts (4 parts by weight of solid content), 1.5 parts by weight (0.015 parts by weight of solid content) of dibutyltin dilaurate ("Sn" in Table 2, 1% by weight ethyl acetate solution) as a crosslinking catalyst, While maintaining the temperature around 25 ° C., the mixture was stirred for about 1 minute to prepare an acrylic adhesive (1) solution.
[丙烯酸系黏著劑(2)溶液之調製] 將上述(甲基)丙烯酸系聚合物(A)溶液(35重量%)以乙酸乙酯稀釋成29重量%，並在此溶液500重量份(固體成分100重量份)中，添加作為交聯劑之異氰酸酯系交聯劑(二異氰酸六亞甲酯的三聚異氰酸酯體(商品名「Coronate HX」：C/HX，日本聚胺甲酸乙酯公司製)5重量份(固體成分5重量份)、作為交聯觸媒之二月桂酸二丁錫(1重量%乙酸乙酯溶液)3重量份(固體成分0.03重量份)、添加劑之不含有機聚矽氧烷之含聚氧伸烷基鏈化合物(Aqualon HS-10，第一工業製藥公司製)0.3重量份(固體成分0.3量份)後，進行混合攪拌，而調製成丙烯酸系黏著劑(2)溶液。[Preparation of solution of acrylic adhesive (2)] The above (meth) acrylic polymer (A) solution (35% by weight) was diluted with ethyl acetate to 29% by weight, and 500 parts by weight of the solution (solid 100 parts by weight of the component) was added as a cross-linking agent, an isocyanate-based cross-linking agent (trimethylene isocyanate of thiomethylene diisocyanate (trade name "Coronate HX": C / HX, Japanese polyurethane) (Manufactured by the company) 5 parts by weight (5 parts by weight of solid content), 3 parts by weight of dibutyltin dilaurate (1% by weight ethyl acetate solution) as a crosslinking catalyst (0.03 parts by weight of solid content), and no additives Polyoxyalkylene-containing polyoxyalkylene chain-containing compound (Aqualon HS-10, manufactured by Daiichi Kogyo Pharmaceutical Co., Ltd.) 0.3 parts by weight (solid content 0.3 parts by weight), and then mixed and stirred to prepare an acrylic adhesive (2) Solution.
[丙烯酸系黏著劑(3)溶液之調製] 將上述(甲基)丙烯酸系聚合物(B)溶液(30重量%)以乙酸乙酯稀釋成29重量%，並在此溶液500重量份(固體成分100重量份)中，添加作為交聯劑之環氧系交聯劑 (1,3-雙(N,N-二環氧丙基胺基甲基)環己烷、環氧當量：110、官能基數：4，商品名「TETRAD-C」：T/C，三菱瓦斯化學公司製)6重量份(固體成分6重量份)後，進行混合攪拌，而調製成丙烯酸系黏著劑(3)溶液。[Preparation of Acrylic Adhesive (3) Solution] The above (meth) acrylic polymer (B) solution (30% by weight) was diluted with ethyl acetate to 29% by weight, and 500 parts by weight of the solution (solid 100 parts by weight of components), an epoxy-based crosslinking agent (1,3-bis (N, N-diglycidylaminomethyl) cyclohexane, epoxy equivalent: 110, Number of functional groups: 4, trade name "TETRAD-C": T / C, manufactured by Mitsubishi Gas Chemical Co., Ltd.) 6 parts by weight (6 parts by weight of solid content), followed by mixing and stirring to prepare an acrylic adhesive (3) solution .
[胺甲酸乙酯系黏著劑(4)溶液之調製] 摻混作為多元醇之具有3個羥基之多元醇Preminol S3011(旭硝子公司製，Mn=10000)85重量份、具有3個羥基之多元醇Sannix GP3000(三洋化成公司製，Mn=3000)13重量份、具有3個羥基之多元醇Sannix GP1000 (三洋化成公司製，Mn=1000)2重量份、作為交聯劑之3官能異氰酸酯化合物之二異氰酸六亞甲酯之三聚異氰酸酯體(Coronate HX：C/HX，日本聚胺甲酸乙酯公司製)18重量份、作為交聯觸媒之乙醯丙酮鐵(III)(參(乙醯丙酮)鐵，表3中的「Fe」，東京化成工業公司製)0.04重量份、作為濕潤性提升劑之肉荳蔻酸異丙酯(Exceparl IPM，花王公司製)30重量份、作為抗氧化劑之Irganox 1010(BASF公司製)0.5重量份、作為稀釋溶劑之乙酸乙酯210重量份，而製得胺甲酸乙酯系黏著劑(4)溶液。[Preparation of urethane-based adhesive (4) solution] Blend a polyol having 3 hydroxyl groups as a polyol, Preminol S3011 (manufactured by Asahi Glass Co., Ltd., Mn = 10000), 85 parts by weight of a polyol having 3 hydroxyl groups 13 parts by weight of Sannix GP3000 (manufactured by Sanyo Kasei Co., Ltd., Mn = 3000), a polyol having three hydroxyl groups, 2 parts by weight of Sannix GP1000 (manufactured by Sanyo Kasei Co., Ltd., Mn = 1000), two parts of a trifunctional isocyanate compound as a crosslinking agent 18 parts by weight of trimethylisocyanate (Coronate HX: C / HX, manufactured by Japan Polyurethane Co., Ltd.) as a cross-linking catalyst, iron (III) acetamidine (see (B)醯 Acetone) Iron, "Fe" in Table 3, manufactured by Tokyo Chemical Industry Co., Ltd.) 0.04 parts by weight, 30 parts by weight of isopropyl myristate (Exceparl IPM, manufactured by Kao Corporation) as a wetting enhancer, as an antioxidant 0.5 parts by weight of Irganox 1010 (manufactured by BASF Corporation) and 210 parts by weight of ethyl acetate as a diluting solvent, to prepare a urethane-based adhesive (4) solution.
[聚矽氧系黏著劑(5)溶液之調製] 摻混以固體成分計100重量份之「X-40-3229」(固體成分60重量%，信越化學工業公司製)作為聚矽氧系黏著劑、作為白金觸媒之「CAT-PL-50T」(信越化學工業公司製)0.5重量份、作為溶劑之甲苯100重量份，而製得聚矽氧系黏著劑(5)溶液。[Preparation of Polysiloxane Adhesive (5) Solution] Blend 100 parts by weight of "X-40-3229" (solid content: 60% by weight, manufactured by Shin-Etsu Chemical Industry Co., Ltd.) as a polysiloxane adhesive 0.5 parts by weight of "CAT-PL-50T" (manufactured by Shin-Etsu Chemical Industry Co., Ltd.) as a platinum catalyst and 100 parts by weight of toluene as a solvent were used to prepare a solution of a polysiloxane adhesive (5).
[分離件I、II及VII] 如表5所示，分離件係使用於基材(PET薄膜)設置有脫模層之附脫模層之基材的市售品。[Separator I, II, and VII] As shown in Table 5, the separator is a commercially available product used for a base material (PET film) with a release layer-attached release layer.
[分離件III之製作] 放入聚矽氧脫模劑(信越化學工業製、KS-847H)100重量份、聚矽氧硬化觸媒(信越化學工業製、CAT-PL-50T)3.3重量份，並以甲苯(出光石油化學製)、己烷(丸善石油化學製、正己烷)、甲基乙基酮(出光興産製、MEK)為1：2：1之重量比而成之溶劑稀釋成0.3重量%，而製得脫模劑組成物。將該脫模劑組成物塗佈於厚度50μm之基材、即PET薄膜(三菱樹脂製、DIAFOIL W100)上，並以130℃乾燥1分鐘而製作出分離件III。脫模層乾燥後之厚度為20nm。[Production of Separator III] 100 parts by weight of polysiloxane release agent (made by Shin-Etsu Chemical Co., Ltd., KS-847H), 3.3 parts by weight of poly-siloxane hardening catalyst (made by Shin-Etsu Chemical Co., Ltd., CAT-PL-50T) And diluted with toluene (made by Idemitsu Petrochemical), hexane (made by Maruzen Petrochemical, n-hexane), and methyl ethyl ketone (made by Idemitsu Kosan, MEK) at a weight ratio of 1: 2: 1 0.3% by weight to obtain a release agent composition. This release agent composition was applied to a substrate having a thickness of 50 μm, that is, a PET film (made by Mitsubishi Resin, DIAFOIL W100), and dried at 130 ° C. for 1 minute to prepare a separator III. The thickness of the release layer after drying was 20 nm.
[分離件IV~VI及VIII之製作] 如表5所示，除了使用表5記載之商品名的PET薄膜取代分離件III所用之PET薄膜外，依與分離件III之製作相同方法來製作。[Preparation of Separator IV to VI and VIII] As shown in Table 5, except that the PET film used in the separator III was replaced with a PET film with the trade name described in Table 5, the same method was used to produce the separator III.
＜實施例1＞ [抗靜電處理薄膜之製作] 將抗靜電劑(Solvex公司製，Micro-Solver RMd-142，以氧化錫與聚酯樹脂為主成分)10重量份，以由水30重量份與甲醇70重量份構成之混合溶劑稀釋，藉此調製成抗靜電劑溶液。 使用繞線棒(meyer bar)將製得之抗靜電劑溶液塗佈在基材薄膜之聚對苯二甲酸乙二醇酯 (PET)薄膜(厚度：38μm)上後，以130℃乾燥1分鐘去除溶劑，藉此形成抗靜電層(厚度：0.2μm)，而製成抗靜電處理薄膜。〈Example 1〉 [Production of antistatic treatment film] 10 parts by weight of an antistatic agent (manufactured by Solvex, Micro-Solver RMd-142, containing tin oxide and polyester resin), and 30 parts by weight of water An antistatic agent solution was prepared by diluting with a mixed solvent composed of 70 parts by weight of methanol. The prepared antistatic agent solution was coated on a polyethylene terephthalate (PET) film (thickness: 38 μm) of the substrate film using a meyer bar, and then dried at 130 ° C. for 1 minute. The solvent was removed, thereby forming an antistatic layer (thickness: 0.2 μm), and forming an antistatic film.
[附分離件之光學用表面保護薄膜之製作] 將上述丙烯酸系黏著劑(1)溶液塗佈在與上述抗靜電處理薄膜之抗靜電處理面相反之面上，並以130℃加熱2分鐘 而形成厚度15μm的黏著劑層。接著，將單面經聚矽氧處理之分離件、即聚對苯二甲酸乙二酯薄膜(東洋紡公司製、商品名：Crisper K7211-38μm、霧度：99.3%、全光線透射率：13.6%、厚度50μm)之聚矽氧處理面貼合於上述黏著劑層表面，而製作出附分離件之光學用表面保護薄膜。[Production of optical surface protective film with separator] The acrylic adhesive (1) solution was coated on the surface opposite to the antistatic surface of the antistatic film, and heated at 130 ° C for 2 minutes. An adhesive layer having a thickness of 15 μm was formed. Next, a polyethylene terephthalate film (manufactured by Toyobo Co., Ltd., trade name: Crisper K7211-38 μm, haze: 99.3%, total light transmittance: 13.6%) (50 μm thick) polysiloxane treatment surface is adhered to the surface of the above-mentioned adhesive layer, and an optical surface protection film with a separator is produced.
＜實施例2及3＞ 如表2所示，除了取代實施例1所使用之丙烯酸系黏著劑(1)溶液，而使用了丙烯酸系黏著劑(2)溶液或丙烯酸系黏著劑(3)溶液以外，以與實施例1同樣的方法製成附分離件之光學用表面保護薄膜。<Examples 2 and 3> As shown in Table 2, in addition to the acrylic adhesive (1) solution used in Example 1, an acrylic adhesive (2) solution or an acrylic adhesive (3) solution was used. Other than that, an optical surface protective film with a separator was prepared in the same manner as in Example 1.
＜實施例4及5＞ 如表3及表4所示，除了取代實施例1所使用之丙烯酸系黏著劑(1)溶液，而使用了胺甲酸乙酯系黏著劑(4)溶液或聚矽氧系黏著劑(5)溶液以外，以與實施例1同樣的方法製成加熱條件等或所製得之黏著劑層的厚度已調整之附分離件之光學用表面保護薄膜。<Examples 4 and 5> As shown in Tables 3 and 4, instead of the acrylic adhesive (1) solution used in Example 1, a urethane-based adhesive (4) solution or polysilicon was used. Except for the solution of the oxygen-based adhesive (5), a surface protective film for optical applications with a separator was prepared in the same manner as in Example 1 under heating conditions or the thickness of the obtained adhesive layer was adjusted.
＜實施例6~10、比較例1及2＞ 如表6所示，除了使用分離件II~VIII取代實施例1所用之分離件I外，依與實施例1相同方法而製得附分離件之光學用表面保護薄膜。<Examples 6 to 10, Comparative Examples 1 and 2> As shown in Table 6, except that the separators II to VIII were used in place of the separator I used in Example 1, the same method as in Example 1 was used to obtain a separator. Optical surface protection film.
關於實施例及比較例之附分離件之光學用表面保護薄膜，將上述的摻混內容、所進行之各種測定及評估結果顯示於表1~表6。另，表中的摻混量表示有效成分。Regarding the optical surface protective films with separators in the examples and comparative examples, the above-mentioned blending contents, various measurement and evaluation results are shown in Tables 1 to 6. The blending amounts in the table indicate the active ingredients.
[表1] [Table 1]
[表2] [Table 2]
[表3] [table 3]
[表4] [Table 4]
[表5] [table 5]
[表6] [TABLE 6]
從上述表6可確認到全部的實施例皆有在正確的位置進行自動貼合。並可確認到比較例1及比較例2因分離件之霧度及全光線透射率落在所期望之範圍外，故無法將附分離件之光學用表面保護薄膜對光學構件表面自動地調整位置，而無法於剝離分離件後將光學用表面保護薄膜以正確的位置貼附於光學構件表面上。From Table 6 above, it can be confirmed that all the examples have automatic bonding at the correct position. It can be confirmed that the haze and total light transmittance of the separators in Comparative Examples 1 and 2 fall outside the expected ranges, so the optical surface protection film with the separators cannot be automatically adjusted on the surface of the optical member. , And the surface protective film for optics cannot be attached to the surface of the optical member at the correct position after the separation member is peeled off.
產業上之利用可能性 揭示於此之附分離件之光學用表面保護薄膜，適合在製造、輸送作為液晶顯示面板、電漿顯示面板(PDP)、有機電致發光(EL)顯示器等之構成要素使用的光學構件時等，當作用以保護該光學構件之表面保護薄膜。尤有用於作為適用於液晶顯示面板用之偏光板(偏光薄膜)、波長板、相位差板、光學補償薄膜、增亮薄膜、光擴散片、反射片等光學構件的光學用表面保護薄膜。The industrial application possibilities disclosed here with an optical surface protection film with a separator are suitable for the manufacture and transportation of components for liquid crystal display panels, plasma display panels (PDP), organic electroluminescence (EL) displays, etc. The optical member used is used as a surface protective film for protecting the optical member. It is particularly useful as an optical surface protection film for optical components such as polarizing plates (polarizing films), wavelength plates, retardation plates, optical compensation films, brightness enhancement films, light diffusion sheets, and reflection sheets suitable for liquid crystal display panels.
1‧‧‧分離件1‧‧‧ Separation
2‧‧‧光學用表面保護薄膜2‧‧‧ Optical surface protection film
3‧‧‧附分離件之光學用表面保護薄膜3‧‧‧ Optical Surface Protective Film with Separator
10‧‧‧光學構件10‧‧‧ Optical components
11‧‧‧基材11‧‧‧ Substrate
12‧‧‧脫模層12‧‧‧ release layer
21‧‧‧黏著劑層21‧‧‧Adhesive layer
22‧‧‧基材薄膜22‧‧‧ substrate film
圖1是顯示本發明之附分離件之光學用表面保護薄膜之一構成例的示意截面圖。 圖2是顯示本發明之附分離件之光學用表面保護薄膜在光學構件上經位置調整後之一構成例的示意截面圖。FIG. 1 is a schematic cross-sectional view showing a configuration example of an optical surface protective film with a separator according to the present invention. FIG. 2 is a schematic cross-sectional view showing a configuration example of an optical surface protective film with a separator according to the present invention after the position is adjusted on an optical member.
Claims (3)
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