# US 11,898,029 B2 · Thermoplastic resin composition

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- Number: US 11,898,029 B2
- Document ID: US11898029B2
- Status: Granted
- Kind: B2
- Application number: 17/275,142
- Filed: 2020-06-04
- Published: 2021-11-18
- Granted: 2024-02-13
- Earliest claimed: 2019-06-13
- Assignees: LG Chem, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Roo Da Lee; Jeong Su Choi; Won Seok Lee; Sang Hoo Park; Jong Ju Lee
- Web page: https://patentgrep.com/patent/US11898029B2

## CPC

- C08F 285/00: Macromolecular compounds obtained by polymerising monomers on to preformed graft polymers
- C08L 51/04: grafted on to rubbers
- C08F 220/14: Methyl esters {, e.g. methyl (meth)acrylate}
- C08L 51/003: {grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds (C08L51/04, C08L51/06 take precedence)}
- A45D 31/00: Artificial nails
- C08L 2205/03: containing three or more polymers in a blend
- C08L 2205/06: having improved processability or containing aids for moulding methods
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- A45D: HAIRDRESSING OR SHAVING EQUIPMENT (wigs, toupees or the like A41G3/00, A41G5/00; hairdressers' chairs A47C1/04; hair cutting appliances, razors B26B); EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING

## Abstract

Provided is a thermoplastic resin composition which includes: a base resin including, in a weight ratio of 70:30 to 90:10, a first copolymer formed by graft polymerization of a diene-based rubber polymer having an average particle diameter of 50 to 200 nm with a first monomer mixture including an alkyl(meth)acrylate-based monomer and an aromatic vinyl-based monomer and a second copolymer which is a copolymer of a second monomer mixture including an alkyl(meth)acrylate-based monomer and an aromatic vinyl-based monomer; and a plasticizer.

## Claims

### Claim 1

A thermoplastic resin molded article made of a thermoplastic resin composition comprising:
a base resin including, in a weight ratio of 70:30 to 90:10, a first copolymer formed by graft polymerization of a diene-based rubber polymer having an average particle diameter of 50 to 200 nm with a first monomer mixture including an alkyl (meth)acrylate-based monomer and an aromatic vinyl-based monomer and a second copolymer which is a copolymer of a second monomer mixture including an alkyl (meth)acrylate-based monomer and an aromatic vinyl-based monomer; and
a plasticizer,
wherein the base resin is included in an amount of 100 parts by weight, and the plasticizer is included in an amount of 4 to 10 parts by weight, and
wherein the thermoplastic resin molded article has a haze of 2.0% or less, a flexural strength of 280 to 420 kg/cm2, and a flexural modulus of 11,000 to 13,500 kg/cm2.

### Claim 2 (depends on 1)

The thermoplastic resin molded article of claim 1, wherein the plasticizer is a polyester-based plasticizer.

### Claim 3 (depends on 1)

The thermoplastic resin molded article of claim 1, wherein the plasticizer has a viscosity of 1,500 to 5,000 cps.

### Claim 4 (depends on 1)

The thermoplastic resin molded article of claim 1, wherein the plasticizer is one or more selected from the group consisting of: polydi(2-ethylhexyl)glycoladipate; hexanedioic acid, polymer with 1,3-butanediol, 2-ethylhexyl ester; hexanedioic acid, polymer with 1,3-butanediol and 1,2-propanediol, 2-ethylhexyl ester; and hexanedioic acid, polymer with 2,2-dimethyl-1,3-propanediol and 1,2-propanediol, isononyl ester.

### Claim 5 (depends on 1)

The thermoplastic resin molded article of claim 1, wherein the plasticizer has a refractive index of 1.45 to 1.6.

### Claim 6 (depends on 1)

The thermoplastic resin molded article of claim 1, wherein the refractive indices of the first copolymer and the second copolymer differ by 0.01 or less.

### Claim 7 (depends on 1)

The thermoplastic resin molded article of claim 1, wherein each of the first and second monomer mixtures further includes a vinyl cyanide-based monomer.