Thermoplastic Resin Composition and Molded Article Using Same

Patent metadata

Field	Value
Publication number	US-2022267595-A1
Application number	US-202017622984-A
Country	US
Kind code	A1
Filing date	Jun 26, 2020
Priority date	Jun 28, 2019
Publication date	Aug 25, 2022
Grant date	—

Abstract

The present invention relates to a thermoplastic resin composition and a molded article using same, the thermoplastic resin composition comprising 100 parts by weight of a base resin comprising (A) 65 to 75 wt % of a polycarbonate resin, (B) 10 to 20 wt % of an aromatic vinyl-vinyl cyanide copolymer, and (C) 10 to 20 wt % of an acrylonitrile-butadiene-styrene graft copolymer; (D) 1 to 5 parts by weight of a polyester resin; and (E) 2 to 6 parts by weight of at least one of a polyolefin-aromatic vinyl glycidyl (meth)acrylate graft copolymer and a polyolefin-aromatic vinyl-vinyl cyanide graft copolymer.

First claim

1 . A thermoplastic resin composition, comprising:
100 parts by weight of a base resin comprising: (A) 65 to 75 wt % of a polycarbonate resin; (B) 10 to 20 wt % of an aromatic vinyl-vinyl cyanide copolymer; and (C) 10 to 20 wt % of an acrylonitrile-butadiene-styrene graft copolymer; (D) 1 to 5 parts by weight of a polyester resin; and (E) 2 to 6 parts by weight of a polyolefin-aromatic vinyl-vinyl cyanide graft copolymer and/or a polyolefin-aromatic vinyl-glycidyl (meth)acrylate graft copolymer.

2 . The thermoplastic resin composition of claim 1 , wherein the (A) polycarbonate resin has a melt flow index of 10 to 25 g/10 min, which is measured under the condition of 300° C. and a 1.2 kg load according to the ASTM D1238 standard.

3 . The thermoplastic resin composition of claim 1 , wherein the (B) aromatic vinyl-vinyl cyanide copolymer is a copolymer of a monomer mixture comprising 60 to 80 wt % of an aromatic vinyl compound and 20 to 40 wt % of a vinyl cyanide compound based on 100 wt % of the aromatic vinyl-vinyl cyanide copolymer.

4 . The thermoplastic resin composition of claim 1 , wherein a weight average molecular weight of the (B) aromatic vinyl-vinyl cyanide copolymer ranges from 80,000 to 200,000 g/mol.

5 . The thermoplastic resin composition of claim 1 , wherein the (B) aromatic vinyl-vinyl cyanide copolymer is a styrene-acrylonitrile copolymer.

6 . The thermoplastic resin composition of claim 1 , wherein
the (C) acrylonitrile-butadiene-styrene graft copolymer has a core-shell structure comprising: a core composed of a butadiene-based rubbery polymer, and a shell formed by graft polymerization of acrylonitrile and styrene on the core.

7 . The thermoplastic resin composition of claim 6 , wherein the (C) acrylonitrile-butadiene-styrene graft copolymer comprises 30 to 70 wt % of the core based on 100 wt % of the acrylonitrile-butadiene-styrene graft copolymer.

8 . The thermoplastic resin composition of claim 6 , wherein the rubbery polymer of the (C) acrylonitrile-butadiene-styrene graft copolymer has an average particle diameter of 200 to 400 nm.

9 . The thermoplastic resin composition of claim 1 , wherein:
the polyolefin-aromatic vinyl-vinyl cyanide graft copolymer comprises a styrene-acrylonitrile copolymer is grafted to a substituted or unsubstituted polyolefin main chain, and the polyolefin-aromatic vinyl-glycidyl (meth)acrylate graft copolymer comprises an aromatic vinyl-glycidyl (meth)acrylate copolymer is grafted to a substituted or unsubstituted polyolefin main chain.

10 . The thermoplastic resin composition of claim 9 , wherein the substituted or unsubstituted polyolefin is polyethylene and/or an ethylene-vinyl acetate copolymer.

11 . The thermoplastic resin composition of claim 9 , wherein the aromatic vinyl-glycidyl (meth)acrylate copolymer is a styrene-glycidyl methacrylate copolymer.

12 . The thermoplastic resin composition of claim 1 , wherein the polyolefin-aromatic vinyl-vinyl cyanide graft copolymer is a polyethylene-styrene-acrylonitrile graft copolymer.

13 . The thermoplastic resin composition of claim 1 , wherein the polyolefin-aromatic vinyl-glycidyl (meth)acrylate graft copolymer is a polyethylene-styrene-glycidyl methacrylate graft copolymer and/or an ethylene-vinyl acetate-styrene-glycidyl methacrylate graft copolymer.

14 . The thermoplastic resin composition of claim 1 , wherein the thermoplastic resin composition further comprises at least one additive selected from a nucleating agent, a coupling agent, filler, a plasticizer, a lubricant, a release agent, an antibacterial agent, a heat stabilizer, an antioxidant, an ultraviolet (UV) stabilizer, a flame retardant, an antistatic agent, an impact modifier, a dye, and/or a pigment.

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

Assignees

• Lotte Chemical Corp

Inventors

• Kim Myunghun
• Kwon Keehae
• Kim Younghyo

Classifications

• C08L69/00 Primary

  Compositions of polycarbonates; Compositions of derivatives of polycarbonates · CPC title

• C08L51/003

  grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds (C08L51/04, C08L51/06 take precedence) · CPC title

• C08L2205/035

  containing four or more polymers in a blend · CPC title

• C08L25/12

  with unsaturated nitriles · CPC title

• C08L77/00

  Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain (of polyhydrazides C08L79/06; of polyamideimides or polyamide acids C08L79/08); Compositions of derivatives of such polymers · CPC title