# US 2019/0168493 A1 · Molded body comprising acrylic resin composition

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- Number: US 2019/0168493 A1
- Document ID: US20190168493A1
- Status: Published application
- Kind: A1
- Application number: 16/313,639
- Filed: 2017-06-27
- Published: 2019-06-06
- Earliest claimed: 2016-06-27
- Assignees: Kuraray Co., Ltd.
- Applicants: Kuraray Co., Ltd.
- Inventors: Hideaki TAKEDA; Noboru HIGASHIDA; Emi FUJII
- Web page: https://patentgrep.com/patent/US20190168493A1

## CPC

- C08L 33/04: Homopolymers or copolymers of esters {(C08L43/04 takes precedence)}
- B32B 27/08: of synthetic resin
- B32B 27/281: {comprising polyimides}
- B32B 27/30: comprising vinyl {(co)polymers; comprising acrylic (co)polymers}
- B32B 27/308: {comprising acrylic (co)polymers}
- B32B 27/36: comprising polyesters
- C08F 285/00: Macromolecular compounds obtained by polymerising monomers on to preformed graft polymers
- C08F 297/026: {polymerising acrylic acid, methacrylic acid or derivatives thereof}
- C08L 33/10: Homopolymers or copolymers of methacrylic acid esters
- C08L 53/00: Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- G02B 5/305: {including organic materials, e.g. polymeric layers}
- B32B 2250/02: 2 layers
- B32B 2250/24: All layers being polymeric
- B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer
- B32B 2255/26: Polymeric coating
- B32B 2264/02: Synthetic macromolecular particles
- B32B 2264/402: with organic substances
- B32B 2264/403: coated or encapsulated
- B32B 2270/00: Resin or rubber layer containing a blend of at least two different polymers
- B32B 2305/30: Fillers, e.g. particles, powders, beads, flakes, spheres, chips
- B32B 2307/42: Polarizing, birefringent, filtering
- B32B 2307/50: having particular mechanical properties
- B32B 2307/51: Elastic
- B32B 2307/536: Hardness
- B32B 2457/00: Electrical equipment
- B32B 2457/20: Displays, e.g. liquid crystal displays, plasma displays
- B32B 2457/202: LCD, i.e. liquid crystal displays
- B32B 2457/208: Touch screens
- B32B 2551/00: Optical elements
- B32B 2590/00: Signboards, advertising panels, road signs
- C08L 2203/16: used for films
- C08L 2205/03: containing three or more polymers in a blend
- C08L 2207/53: Core-shell polymer
- C09D 7/40: Additives
- Y10T 428/2495: Thickness [relative or absolute]
- Y10T 428/24967: Absolute thicknesses specified
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A multi-layer shaped product, comprising a layer composed of an acrylic resin composition comprising a (meth)acrylic resin (A) and an acrylic block copolymer (B) comprising an acrylic acid ester polymer block (a) and a methacrylic acid ester polymer block (b), and if necessary, particles of an acrylic elastomeric polymer (C), and a layer composed of an active energy ray cured resin that is in contact with the layer composed of the acrylic resin composition, wherein an amount of the acrylic block copolymer (B) comprised in the acrylic resin composition is not less than 1 part by mass and not more than 60 parts by mass based on 100 parts by mass of the acrylic resin composition.

## Claims

### Claim 1

A multi-layer shaped product, comprising
a layer made of an acrylic resin composition comprising
a (meth)acrylic resin (A) and
an acrylic block copolymer (B) comprising an acrylic acid ester polymer block (a) and a methacrylic acid ester polymer block (b), and
a layer made of an active energy ray cured resin that is in contact with the layer made of the acrylic resin composition,
wherein an amount of the acrylic block copolymer (B) comprised in the acrylic resin composition is not less than 1 part by mass and not more than 60 parts by mass based on 100 parts by mass of the acrylic resin composition.

### Claim 2 (depends on 1)

The shaped product according to claim 1, wherein the acrylic block copolymer (B) comprises 20 to 80% by mass of the acrylic acid ester polymer block (a) and 20 to 80% by mass of the methacrylic acid ester polymer block (b).

### Claim 3 (depends on 1)

The shaped product according to claim 1, wherein the amount of the acrylic block copolymer (B) comprised in the acrylic resin composition is not less than 2 parts by mass and less than 15 parts by mass based on 100 parts by mass of the acrylic resin composition.

### Claim 4 (depends on 1)

The shaped product according to claim 1, wherein the acrylic resin composition further comprises an elastomeric polymer (C).

### Claim 5 (depends on 4)

The shaped product according to claim 4, wherein the elastomeric polymer (C) is formed of particles and comprises a polymer (c2) comprising 70 to 99.8% by mass of an acrylic acid non-cyclic alkyl ester and 0.2 to 30% by mass of a crosslinkable monomer.

### Claim 6 (depends on 4)

The shaped product according to claim 4, wherein the elastomeric polymer (C) is formed of core-shell multi-layered particles, at least one layer thereof comprises a polymer (c2) comprising 70 to 99.8% by mass of an acrylic acid non-cyclic alkyl ester and 0.2 to 30% by mass of a crosslinkable monomer, and at least one layer outside the layer comprising the polymer (c2) comprises a polymer (c1) comprising 80 to 100% by mass of methyl methacrylate.

### Claim 7 (depends on 4)

The shaped product according to claim 4, wherein an amount of the elastomeric polymer (C) comprised in the acrylic resin composition is 1 to 30 parts by mass based on 100 parts by mass of the acrylic resin composition.

### Claim 8 (depends on 1)

The shaped product according to claim 1, wherein an amount of a structural unit derived from a (meth)acrylic acid ester comprised in the (meth)acrylic resin (A) is not less than 80% by mass based on an amount of all structural units comprised in the (meth)acrylic resin (A).

### Claim 9 (depends on 1)

The shaped product according to claim 1, wherein the acrylic block copolymer (B) is a triblock copolymer.

### Claim 10 (depends on 1)

The shaped product according to claim 1, wherein the acrylic block copolymer (B) is a triblock copolymer represented by polymer block (b)-polymer block (a)-polymer block (b) and weight average molecular weights of the two polymer blocks (b) are different from each other.

### Claim 11 (depends on 1)

The shaped product according to claim 1, wherein the active energy ray cured resin is an ultraviolet cured resin.

### Claim 12 (depends on 1)

The shaped product according to claim 1, wherein the active energy ray cured resin comprises a cationic polymer resin.

### Claim 13 (depends on 1)

The shaped product according to claim 1, which is a film having a total thickness of 10 to 1,000 μm.

### Claim 14 (depends on 1)

A polarizer protective film, comprising
the shaped product according to claim 1.

### Claim 15 (depends on 1)

A polarizing plate, comprising
the shaped product according to claim 1.