Thermoplastic resin composition and molded article including the same

Patent metadata

Field	Value
Publication number	US-2022010122-A1
Application number	US-202017298523-A
Country	US
Kind code	A1
Filing date	Aug 25, 2020
Priority date	Sep 6, 2019
Publication date	Jan 13, 2022
Grant date	—

Abstract

The present invention relates to a thermoplastic resin composition and a molded article including the same. More specifically, the thermoplastic resin composition of the present invention includes 100 parts by weight of a base resin consisting of 10 to 30% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-1) including an acrylate rubber having an average particle diameter of 0.05 to 0.15 μm, 20 to 40% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-2) including an acrylate rubber having an average particle diameter of 0.3 to 0.5 μm, 0 to 35% by weight of an aromatic vinyl polymer (B), and 10 to 60% by weight of a polymethacrylate (C); and 0.5 to 10 parts by weight of a polyamide (D).

First claim

1 . A thermoplastic resin composition, comprising:
100 parts by weight of a base resin consisting of 10 to 30% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-1) comprising an acrylate rubber having an average particle diameter of 0.05 to 0.15 μm, 20 to 40% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-2) comprising an acrylate rubber having an average particle diameter of 0.3 to 0.5 μm, 0 to 35% by weight of an aromatic vinyl polymer (B), and 10 to 60% by weight of a polymethacrylate (C); and 0.5 to 10 parts by weight of a polyamide (D).

2 . The thermoplastic resin composition according to claim 1 , wherein, based on a result that the thermoplastic resin composition has a film gloss of 14 or less as measured at 60° using a gloss meter (product name: VG7000), the thermoplastic resin composition has matte properties.

3 . The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin composition has an average surface roughness value of 4 or less for 5 points as measured using an optical profiler system.

4 . The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin composition has a weather resistance (ΔE) value of 4.0 or less as measured according to SAE J1960.

5 . The thermoplastic resin composition according to claim 1 , wherein the graft copolymer (A-1) comprises 40 to 60% by weight of an acrylate rubber, 25 to 45% by weight of an aromatic vinyl compound, and 10 to 20% by weight of a vinyl cyanide compound.

6 . The thermoplastic resin composition according to claim 1 , wherein the graft copolymer (A-2) comprises 40 to 60% by weight of an acrylate rubber, 25 to 45% by weight of an aromatic vinyl compound, and 10 to 20% by weight of a vinyl cyanide compound.

7 . The thermoplastic resin composition according to claim 1 , wherein the graft copolymer (A-1) is comprised in a lesser amount than the graft copolymer (A-2).

8 . The thermoplastic resin composition according to claim 1 , wherein a total weight of the graft copolymer (A-1) and the graft copolymer (A-2) is 40 to 60% by weight based on a weight of the base resin.

9 . The thermoplastic resin composition according to claim 1 , wherein the aromatic vinyl polymer (B) is comprised in an amount of 10 to 35% by weight.

10 . The thermoplastic resin composition according to claim 1 , wherein the aromatic vinyl polymer (B) is comprised in an amount of less than 10% by weight or is absent.

11 . The thermoplastic resin composition according to claim 1 , wherein the aromatic vinyl polymer (B) is an aromatic vinyl compound-vinyl cyanide compound copolymer.

12 . The thermoplastic resin composition according to claim 1 , wherein the polymethacrylate resin (C) comprises a methacrylate monomer in an amount of 55% by weight or more.

13 . The thermoplastic resin composition according to claim 12 , wherein the polymethacrylate resin (C) comprises one or more selected from the group consisting of polymethyl methacrylate resins and methyl methacrylate-styrene-acrylonitrile copolymers.

14 . The thermoplastic resin composition according to claim 13 , wherein the methyl methacrylate-styrene-acrylonitrile copolymer comprises 65 to 85% by weight of methyl methacrylate, 5 to 30% by weight of styrene, and 5 to 10% by weight of acrylonitrile.

15 . The thermoplastic resin composition according to claim 1 , wherein the polyamide (D) is Polyamide 6.6.

16 . A molded article, comprising the thermoplastic resin composition of claim 1 .

Assignees

• Lg Chemical Ltd

Inventors

• Sung Da Eun
• Kim Tae Hoon
• Park Chun Ho
• An Yong Hee
• Cho Wangrae
• Kim Ho Hoon
• Jang Jeongmin

Classifications

• C08L25/14

  with unsaturated esters · CPC title

• C08L2205/035

  containing four or more polymers in a blend · CPC title

• C08L51/04 Primary

  grafted on to rubbers · CPC title

• C08L33/12

  Homopolymers or copolymers of methyl methacrylate · CPC title

• C08L2205/025

  containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title