# US 2010/0168340 A1 · Resin composition and film

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- Number: US 2010/0168340 A1
- Document ID: US20100168340A1
- Status: Published application
- Kind: A1
- Application number: 12/280,162
- Filed: 2007-02-21
- Published: 2010-07-01
- Earliest claimed: 2006-02-22
- Assignees: Nippon Shokubai Co., Ltd.
- Inventors: Kenichi Ueda; Shigeo Otome; Akio Naka
- Web page: https://patentgrep.com/patent/US20100168340A1

## CPC

- C08L 33/08: Homopolymers or copolymers of acrylic acid esters
- C08F 285/00: Macromolecular compounds obtained by polymerising monomers on to preformed graft polymers
- C08J 5/18: Manufacture of films or sheets
- C08L 33/14: of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
- C08L 35/06: Copolymers with vinyl aromatic monomers
- C08J 2333/12: Homopolymers or copolymers of methyl methacrylate
- C08L 25/12: with unsaturated nitriles
- C08L 51/003: {grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds (C08L51/04, C08L51/06 take precedence)}
- C08L 2205/22: Mixtures comprising a continuous polymer matrix in which are dispersed crosslinked particles of another polymer
- Y10S 524/902: Electrostatic spray
- Y10T 428/24612: Composite web or sheet
- Y10T 428/254: Polymeric or resinous material
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

To realize a resin composition which enables formation of a film having excellent film formability and bending resistance and having a small retardation. A resin composition of the present invention comprises: an acrylic resin as a main component; and organic fine particles whose average particle diameter ranges from 0.01 μm to 1 μm, wherein a glass transition temperature of the acrylic resin ranges from 110° C. to 200° C., and each of the organic fine particles has a structural unit of a vinyl cyanide monomer and a structural unit of an aromatic vinyl monomer.

## Claims

### Claim 1

A resin composition, comprising:
an acrylic resin as a main component; and
organic fine particles whose average particle diameter ranges from 0.01 μm to 1 μm, wherein:
a glass transition temperature of the acrylic resin ranges from 110° C. to 200° C.,
each of the organic fine particles has a core-shell structure, and a core of the core-shell structure is crosslinked, and
a shell of the core-shell structure has a structural unit of a vinyl cyanide monomer and a structural unit of an aromatic vinyl monomer.

### Claim 2 (depends on 1)

The resin composition as set forth in claim 1, obtained by melting an extrusion after filtration with a polymer filter.

### Claim 3 (depends on 1)

The resin composition as set forth in claim 1, wherein a film made of the resin composition has an in-plane retardation of 10 nm or less per 100 μm thickness.

### Claim 4 (depends on 3)

The resin composition as set forth in claim 3, wherein the film is obtained by stretching the resin composition 1.5 times.

### Claim 5 (depends on 1)

The resin composition as set forth in claim 1, wherein the acrylic resin has a lactone ring structure.

### Claim 6

(canceled)

### Claim 7

(canceled)

### Claim 8

A film, comprising a resin composition, the resin composition comprising:
an acrylic resin as a main component; and
organic fine particles whose average particle diameter ranges from 0.01 μm to 1 μm, wherein:
a glass transition temperature of the acrylic resin ranges from 110° C. to 200° C.,
each of the organic fine particles has a core-shell structure, and a core of the core-shell structure is crosslinked, and
a shell of the core-shell structure has a structural unit of a vinyl cyanide monomer and a structural unit of an aromatic vinyl monomer.

### Claim 9 (depends on 8)

The film as set forth in claim 8, wherein the number of foreign substances whose particle diameter is 20 μm or more is 1000/m2 or less.

### Claim 10 (depends on 8)

The film as set forth in claim 8, wherein the film is a stretched film.

### Claim 11 (depends on 8)

The film as set forth in claim 8, wherein the acrylic resin has a lactone ring structure.