WO2015074268A1 - Resin composition suitable for direct extrusion of sheets with surface structure to eliminate newton's rings - Google Patents

Resin composition suitable for direct extrusion of sheets with surface structure to eliminate newton's rings Download PDF

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Publication number
WO2015074268A1
WO2015074268A1 PCT/CN2013/087763 CN2013087763W WO2015074268A1 WO 2015074268 A1 WO2015074268 A1 WO 2015074268A1 CN 2013087763 W CN2013087763 W CN 2013087763W WO 2015074268 A1 WO2015074268 A1 WO 2015074268A1
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WO
WIPO (PCT)
Prior art keywords
resin
rings
newton
extrusion
composition
Prior art date
Application number
PCT/CN2013/087763
Other languages
French (fr)
Inventor
Gexiao SUN
Ta-Chi LUAN
Feng Zhao
Original Assignee
Evonik Specialty Chemicals (Shanghai) Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Evonik Specialty Chemicals (Shanghai) Co., Ltd. filed Critical Evonik Specialty Chemicals (Shanghai) Co., Ltd.
Priority to PCT/CN2013/087763 priority Critical patent/WO2015074268A1/en
Priority to TW103140815A priority patent/TW201533135A/en
Publication of WO2015074268A1 publication Critical patent/WO2015074268A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/10—Homopolymers or copolymers of methacrylic acid esters
    • C08L33/12—Homopolymers or copolymers of methyl methacrylate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
    • C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C08J2333/10—Homopolymers or copolymers of methacrylic acid esters
    • C08J2333/12—Homopolymers or copolymers of methyl methacrylate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
    • C08J2433/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C08J2433/10—Homopolymers or copolymers of methacrylic acid esters
    • C08J2433/12—Homopolymers or copolymers of methyl methacrylate

Definitions

  • Resin composition suitable for direct extrusion of sheets with surface structure to eliminate Newton's rings
  • the present invention relates to a new resin composition suitable for direct extrusion of sheets with surface structure to eliminate Newton's rings.
  • Transparent sheets are used in lighting devices, panels, and the like. In some cases, for example, in some lighting devices, transparent sheets used should have minimum Newton's rings phenomenon.
  • Newton's rings occur in sheets made by conventional methods. Newton's rings occur when light is reflected by a spherical surface and an adjacent flat surface with an air film in between. Very often, two flat surfaces with intimate contact also form Newton's rings if one of the surfaces has deformation. One way to prevent Newton's rings from occurring is to make one of the two surfaces rough. In order to achieve certain optical properties, the transmission loss by making the surface rough should be minimized. Extruded or injection molded sheets with surface structure can be used for this purpose. However, the production complexity and the transmission loss are usually high. Density of the surface structure can only be changed by changing the design of the roller (for extrusion) or the mold (for injection molding).
  • the objective of the present invention is to overcome as least part of the defects of the prior art.
  • the present invention therefore provides a composition, particularly an acrylic resin composition, which is suitable to produce extrusion products for example, sheets, by direct extrusion with surface structure which has reduced or no Newton's rings phenomenon.
  • the composition comprises a resin as matrix and cross-linked resin beads.
  • the resin composition comprises:
  • the resin of the invention can be any materials suitable for extrusion process and purpose of the extruded products.
  • the resin is acrylic resin.
  • acrylic resin include polymethyl methacrylate (PMMA).
  • the base resin can also be a mixture.
  • additives can be added into the base resin.
  • impact modifier can be added.
  • the resin composition can further comprise other suitable components in the art.
  • the resin composition consists of base resin and cross-linked resin beads.
  • the refractive indices of the base resin and the beads are the same, so that a transparent extrusion product can be obtained. More preferably, the resins of both base resin and resin beads are transparent.
  • the refractive indices of the base resin and the beads are the same or very close, e.g. less than 5 %, preferably 4 %, 3 %, 2 %, 1 %, 0.5 %, 0.2 %, or 0.1 % difference.
  • the refractive indices of the base resin and the beads are different.
  • the materials of base resin and resin beads can be either different or the same.
  • the material of the base resin is the same as that of the beads; preferably, the material of base resin and/or resin beads is polymethyl methacrylate (PMMA).
  • the resin composition comprises preferably 0.02-10 wt%, 0.05-10 wt%, 0.1-10 wt%, 0.2-10 wt%, 0.5-10 wt%, 0.5-8 wt%, 0.5-6 wt%, 0.5-5 wt%, 0.5-4 wt%, 0.4-5 wt%, 1-5 wt% of cross-linked resin beads based on the total weight of the composition.
  • the acrylic resin composition comprises 0.5 wt% of cross-linked acrylic resin beads; in another embodiment, the acrylic resin composition comprises 1 wt% of cross-linked acrylic resin beads; in one further embodiment, the acrylic resin composition comprises 3 wt% of cross-linked acrylic resin beads; in one specific embodiment, the acrylic resin composition comprises 4 wt% of cross-linked acrylic resin beads.
  • the mean particle size of the resin beads is preferably from 5 ⁇ to 200 ⁇ , more preferably from 20 ⁇ to 100 ⁇ .
  • the resin beads should be cross-linked. If the resin beads are not cross-linked, the beads are easy to be overly deformed after the extrusion process and thus the resulting sheets would possibly generate Newton's rings.
  • the crosslinking degree of the resin beads is 2 %.
  • the extrusion products can be of any shape, such as film, plate, or profile, etc.
  • the present invention also provides a method for producing extrusion products that generate no or minimum Newton's rings by extrusion, comprising the step of extruding the resin composition of the present invention.
  • the extrusion process can be direct extrusion and an extrusion process of the prior art.
  • the present invention further provides a method for producing extrusion products that generate no or minimum Newton's rings, comprising:
  • composition comprising 90-99.99 wt% of resin as base resin, and 0.01-10 wt% of cross-linked resin beads, based on the total weight of the composition, and - extruding the composition.
  • the extrusion products produced according to the method of the present invention have a surface structure (see, e.g. Figure 1) that eliminates Newton's rings.
  • the present invention further provides use of the resin composition of the present invention in producing extrusion products that generate no or minimum Newton's rings.
  • the present invention further provides an extrusion product that generates no or minimum Newton's rings, wherein the extrusion product is made from the resin composition of the present invention, or is made according to the method for producing extrusion products of the present invention.
  • the extrusion product is preferably transparent.
  • the present invention further provides an article comprising an extrusion product that generates no or minimum Newton's rings of the present invention.
  • the article includes but is not limited to lighting devices.
  • the extrusion products are parts of the lighting devices, such as a cover for panel lighting.
  • the article can be made by e.g., conventional methods with the extrusion product of the present invention as a part.
  • the present invention provides a simple and economic technical solution of making extrusion products like sheet without or with minimum Newton's rings by extrusion directly without using special molds.
  • extrusion product with surface structure can be directly produced with normal extrusion process, for instance, a conventional sheet extrusion line, comprising of extrusion system, sheet die, calender rolls system, and pull-roll system etc. Rollers normally required in prior art for bringing surface structure on the sheet are not needed.
  • Another major advantage of the invention is, that it is easy to process.
  • the density of the surface structure can be simply tuned by changing the loading of the cross -linked acrylic resin beads.
  • the resin beads essentially have no effect to the rheology, mechanical properties, thermal properties of the base resin.
  • Figure 1 is a magnified photograph taken under an optical microscope, showing the surface structure of the extruded sheet of Example 3.
  • composition 1 of example 1 comprised of 99.5 % PMMA (PLEXIGLAS® 8N clear) and 0.5 % cross-linked PMMA beads (mean particle size 46 ⁇ ).
  • 2.5mm thick sheet (A) was extruded on a 30 mm single-screw extruder with a free forming table with barrel temperature from 210 °C to 260 °C and die temperature of 200 °C.
  • the crosslinking degree of the resin beads was 2 %.
  • the sheet (A) was transparent and the light transmission was 91.9 %.
  • a 2.5 mm thick sheet (A) of example 1 was placed on a 2.5 mm flat PMMA sheet (B).
  • deforming the sheet (A) of example 1 by exerting a force on part of the surface of the sheet (A) no Newton's rings were observed.
  • Examples 2-4 2.5 mm thick sheets (A) of examples 2-4 were prepared by the same method as described in example 1 with the loading of beads as shown in Table 1.
  • the sheets (A) of examples 2-4 were transparent.
  • Sheets (A) of examples 2-4 were tested in the same way as sheet (A) in example 1, no Newton's rings were observed.
  • a 2.5 mm thick sheet (A) was extruded on a 30 mm single-screw extruder with a free forming table with barrel temperature from 210 °C to 260 °C and die temperature of 200 °C.
  • the light transmission of a 2.5 mm thick sheet (A) extruded from PLEXIGLAS® 8N clear was 92 %.
  • Light transmission was measured on ColorEye 7000A (Illuminant: D65/10 0 ) according to ISO 13468-2.
  • a 2.5 mm thick sheet (A) of comparative example 1 was placed on a flat PMMA sheet (B).
  • B When deforming the sheet (A) of comparative example 1 by exerting a force on part of surface of the sheet (A) of comparative example 1, Newton's rings were clearly observed.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

The present invention provides a resin composition for producing extrusion products like sheets that generate no or minimum Newton's rings, comprising: 90 wt% to 99.99 wt% of resin as base resin, and 0.01 wt% to 10 wt% of cross-linked resin beads, based on the total weight of the composition. The invention also provides a method for producing extrusion products that generate no or minimum Newton's rings, and an extrusion product. The present invention provides a simple and economic technical solution of making extrusion products with no or minimum Newton's rings by extrusion directly without using special molds.

Description

Resin composition suitable for direct extrusion of sheets with surface structure to eliminate Newton's rings
Technical Field
The present invention relates to a new resin composition suitable for direct extrusion of sheets with surface structure to eliminate Newton's rings.
Background art
Transparent sheets are used in lighting devices, panels, and the like. In some cases, for example, in some lighting devices, transparent sheets used should have minimum Newton's rings phenomenon.
However, Newton's rings occur in sheets made by conventional methods. Newton's rings occur when light is reflected by a spherical surface and an adjacent flat surface with an air film in between. Very often, two flat surfaces with intimate contact also form Newton's rings if one of the surfaces has deformation. One way to prevent Newton's rings from occurring is to make one of the two surfaces rough. In order to achieve certain optical properties, the transmission loss by making the surface rough should be minimized. Extruded or injection molded sheets with surface structure can be used for this purpose. However, the production complexity and the transmission loss are usually high. Density of the surface structure can only be changed by changing the design of the roller (for extrusion) or the mold (for injection molding).
It is desirable to provide sheets which will generate minimum Newton's rings.
Summary of the invention
The objective of the present invention is to overcome as least part of the defects of the prior art. The present invention therefore provides a composition, particularly an acrylic resin composition, which is suitable to produce extrusion products for example, sheets, by direct extrusion with surface structure which has reduced or no Newton's rings phenomenon. The composition comprises a resin as matrix and cross-linked resin beads.
According to the present invention, the resin composition comprises:
- 90-99.99 wt% of resin as base resin, and
- 0.01-10 wt% of cross-linked resin beads, based on the total weight of the composition.
The resin of the invention can be any materials suitable for extrusion process and purpose of the extruded products. Preferably, the resin is acrylic resin. Non-limiting examples of acrylic resin include polymethyl methacrylate (PMMA).
The base resin can also be a mixture. For example, additives can be added into the base resin. For example, if impact strength is specially required for base resin, impact modifier can be added.
The resin composition can further comprise other suitable components in the art. Alternatively, the resin composition consists of base resin and cross-linked resin beads.
Although refractive indices have nothing to do with Newton's ring, in some embodiments, the refractive indices of the base resin and the beads are the same, so that a transparent extrusion product can be obtained. More preferably, the resins of both base resin and resin beads are transparent.
In some embodiments, the refractive indices of the base resin and the beads are the same or very close, e.g. less than 5 %, preferably 4 %, 3 %, 2 %, 1 %, 0.5 %, 0.2 %, or 0.1 % difference.
In some embodiments, the refractive indices of the base resin and the beads are different.
The materials of base resin and resin beads can be either different or the same. In some embodiments, the material of the base resin is the same as that of the beads; preferably, the material of base resin and/or resin beads is polymethyl methacrylate (PMMA).
The resin composition comprises preferably 0.02-10 wt%, 0.05-10 wt%, 0.1-10 wt%, 0.2-10 wt%, 0.5-10 wt%, 0.5-8 wt%, 0.5-6 wt%, 0.5-5 wt%, 0.5-4 wt%, 0.4-5 wt%, 1-5 wt% of cross-linked resin beads based on the total weight of the composition. In one embodiment, the acrylic resin composition comprises 0.5 wt% of cross-linked acrylic resin beads; in another embodiment, the acrylic resin composition comprises 1 wt% of cross-linked acrylic resin beads; in one further embodiment, the acrylic resin composition comprises 3 wt% of cross-linked acrylic resin beads; in one specific embodiment, the acrylic resin composition comprises 4 wt% of cross-linked acrylic resin beads.
The mean particle size of the resin beads is preferably from 5μηι to 200 μηι, more preferably from 20 μηι to 100 μηι.
According to the invention, the resin beads should be cross-linked. If the resin beads are not cross-linked, the beads are easy to be overly deformed after the extrusion process and thus the resulting sheets would possibly generate Newton's rings. In one embodiment, the crosslinking degree of the resin beads is 2 %.
In addition to sheet, the extrusion products can be of any shape, such as film, plate, or profile, etc.
The present invention also provides a method for producing extrusion products that generate no or minimum Newton's rings by extrusion, comprising the step of extruding the resin composition of the present invention. The extrusion process can be direct extrusion and an extrusion process of the prior art.
The present invention further provides a method for producing extrusion products that generate no or minimum Newton's rings, comprising:
- mixing a composition comprising 90-99.99 wt% of resin as base resin, and 0.01-10 wt% of cross-linked resin beads, based on the total weight of the composition, and - extruding the composition.
The extrusion products produced according to the method of the present invention have a surface structure (see, e.g. Figure 1) that eliminates Newton's rings.
The present invention further provides use of the resin composition of the present invention in producing extrusion products that generate no or minimum Newton's rings.
The present invention further provides an extrusion product that generates no or minimum Newton's rings, wherein the extrusion product is made from the resin composition of the present invention, or is made according to the method for producing extrusion products of the present invention. The extrusion product is preferably transparent.
The present invention further provides an article comprising an extrusion product that generates no or minimum Newton's rings of the present invention. The article includes but is not limited to lighting devices. In such embodiments, the extrusion products are parts of the lighting devices, such as a cover for panel lighting. The article can be made by e.g., conventional methods with the extrusion product of the present invention as a part.
Therefore, the present invention provides a simple and economic technical solution of making extrusion products like sheet without or with minimum Newton's rings by extrusion directly without using special molds. By using the resin composition of the invention, extrusion product with surface structure can be directly produced with normal extrusion process, for instance, a conventional sheet extrusion line, comprising of extrusion system, sheet die, calender rolls system, and pull-roll system etc. Rollers normally required in prior art for bringing surface structure on the sheet are not needed. Another major advantage of the invention is, that it is easy to process. The density of the surface structure can be simply tuned by changing the loading of the cross -linked acrylic resin beads. In addition, the resin beads essentially have no effect to the rheology, mechanical properties, thermal properties of the base resin. Other advantages of the present invention would be apparent for a person skilled in the art upon reading the specification.
Brief Description of Drawings
Figure 1 is a magnified photograph taken under an optical microscope, showing the surface structure of the extruded sheet of Example 3.
Detailed description of the invention
The invention is now described in detail by the following examples. The scope of the invention should not be limited to the embodiments of the examples.
Example 1
The composition 1 of example 1 comprised of 99.5 % PMMA (PLEXIGLAS® 8N clear) and 0.5 % cross-linked PMMA beads (mean particle size 46 μηι). 2.5mm thick sheet (A) was extruded on a 30 mm single-screw extruder with a free forming table with barrel temperature from 210 °C to 260 °C and die temperature of 200 °C. The crosslinking degree of the resin beads was 2 %.
The sheet (A) was transparent and the light transmission was 91.9 %.
Light transmission was measured on ColorEye 7000A (Illuminant: D65/100) according to ISO 13468-2.
Testing for Newton's rings:
100 % PMMA (PLEXIGLAS® 8N clear) was used to extrude a 2.5 mm thick flat PMMA sheet (B).
A 2.5 mm thick sheet (A) of example 1 was placed on a 2.5 mm flat PMMA sheet (B). When deforming the sheet (A) of example 1 by exerting a force on part of the surface of the sheet (A), no Newton's rings were observed.
Examples 2-4 2.5 mm thick sheets (A) of examples 2-4 were prepared by the same method as described in example 1 with the loading of beads as shown in Table 1. The sheets (A) of examples 2-4 were transparent.
Table 1 : compositions of examples 1 -4
Figure imgf000007_0001
Sheets (A) of examples 2-4 were tested in the same way as sheet (A) in example 1, no Newton's rings were observed.
Comparative example 1
Using 100 % PMMA (PLEXIGLAS® 8N clear), a 2.5 mm thick sheet (A) was extruded on a 30 mm single-screw extruder with a free forming table with barrel temperature from 210 °C to 260 °C and die temperature of 200 °C.
The light transmission of a 2.5 mm thick sheet (A) extruded from PLEXIGLAS® 8N clear was 92 %. Light transmission was measured on ColorEye 7000A (Illuminant: D65/100) according to ISO 13468-2.
A 2.5 mm thick sheet (A) of comparative example 1 was placed on a flat PMMA sheet (B). When deforming the sheet (A) of comparative example 1 by exerting a force on part of surface of the sheet (A) of comparative example 1, Newton's rings were clearly observed.
As used herein, terms such as "comprise(s)" and the like as used herein are open terms meaning 'including at least' unless otherwise specifically noted. All references, tests, standards, documents, publications, etc. mentioned herein are incorporated herein by reference. Where a numerical limit or range is stated, the endpoints are included. Also, all values and subranges within a numerical limit or range are specifically included as if explicitly written out.
The above description is presented to enable a person skilled in the art to make and use the invention, and is provided in the context of a particular application and its requirements. Various modifications to the preferred embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the invention. Thus, this invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein. In this regard, certain embodiments within the invention may not show every benefit of the invention, considered broadly.

Claims

Claims
1. A resin composition comprising:
- 90 wt% to 99.99 wt% of resin as base resin, and
- 0.01 wt% to 10 wt% of cross-linked resin beads, based on the total weight of the composition.
2. The resin composition of claim 1, wherein the resin is acrylic resin, preferably polymethyl methacrylate.
3. The resin composition of claim 1, wherein the refractive indices of the base resin and the beads are the same, preferably the materials of base resin and resin beads are the same.
4. The resin composition of claim 1, wherein the resin composition comprises 0.02 wt%-10 wt%, 0.05 wt%-10 wt%, 0.1 wt%-10 wt%, 0.2 wt%-10 wt%, 0.5 wt%-10 wt%, 0.5 wt%-8 wt%, 0.5 wt%-6 wt%, 0.5 wt%-5 wt%, 0.5 wt%-4 wt%, 0.4 wt%-5 wt%, or 1 wt%-5 wt% of cross-linked resin beads based on the total weight of the composition.
5. The resin composition of claim 1, wherein the mean particle size of the resin beads is from 5μηι to 200μηι, preferably from 20μηι to ΙΟΟμηι.
6. A method for producing extrusion products that generate no or minimum Newton's rings by direct extrusion, comprising the step of extruding the resin composition according to any one of claims 1-5.
7. A method for producing extrusion products that generate no or minimum Newton's rings, comprising:
- mixing a composition comprising 90 wt% to 99.99 wt% of resin as base resin, and 0.01 wt% to 10 wt% of cross-linked resin beads, based on the total weight of the composition, and
- extruding the composition.
8. Use of the resin composition according to any one of claims 1-5 in producing extrusion products that generate no or minimum Newton's rings.
9. An extrusion product that generates no or minimum Newton's rings, wherein the extrusion product is made from the resin composition according to any one of claims 1-5, or is made according to the method of claims 6 or 7.
10. An article comprising an extrusion product that generates no or minimum Newton's rings of claim 9.
PCT/CN2013/087763 2013-11-25 2013-11-25 Resin composition suitable for direct extrusion of sheets with surface structure to eliminate newton's rings WO2015074268A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007031494A (en) * 2005-07-22 2007-02-08 Furukawa Electric Co Ltd:The Pressure sensitive adhesive sheet for adhering wafer
CN101117400A (en) * 2006-07-31 2008-02-06 住友化学株式会社 Mat acrylic resin film
CN101544084A (en) * 2008-03-27 2009-09-30 住友化学株式会社 Scratch-resistant resin plate and display window protecting plate of portable information terminal using the same
CN103282442A (en) * 2011-01-05 2013-09-04 株式会社钟化 Polymer microparticle-dispersed resin composition and method for producing same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007031494A (en) * 2005-07-22 2007-02-08 Furukawa Electric Co Ltd:The Pressure sensitive adhesive sheet for adhering wafer
CN101117400A (en) * 2006-07-31 2008-02-06 住友化学株式会社 Mat acrylic resin film
CN101544084A (en) * 2008-03-27 2009-09-30 住友化学株式会社 Scratch-resistant resin plate and display window protecting plate of portable information terminal using the same
CN103282442A (en) * 2011-01-05 2013-09-04 株式会社钟化 Polymer microparticle-dispersed resin composition and method for producing same

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