Thermoplastic Resin Composition and Molded Article Using the Same

Patent metadata

Field	Value
Publication number	US-2018187005-A1
Application number	US-201715855369-A
Country	US
Kind code	A1
Filing date	Dec 27, 2017
Priority date	Dec 30, 2016
Publication date	Jul 5, 2018
Grant date	—

Abstract

Disclosed are a thermoplastic resin composition including (A) about 100 parts by weight of a base resin including (A-1) about 65 wt % to about 85 wt % of a polycarbonate resin, (A-2) about 5 wt % to about 15 wt % of a polybutylene terephthalate resin, (A-3) about 5 wt % to about 20 wt % of a methyl methacrylate-styrene-acrylonitrile copolymer, and (A-4) greater than about 0 wt % and less than or equal to about 10 wt % of an aromatic vinyl compound-vinyl cyanide compound copolymer; and (B) about 5 parts by weight to about 10 parts by weight of a methyl methacrylate-butadiene-styrene copolymer, and a molded article using the same.

First claim

What is claimed is:

1 . A thermoplastic resin composition, comprising:
(A) about 100 parts by weight of a base resin including: (A-1) about 65 wt % to about 85 wt % of a polycarbonate resin; (A-2) about 5 wt % to about 15 wt % of a polybutylene terephthalate resin, (A-3) about 5 wt % to about 20 wt % of a methyl methacrylate-styrene-acrylonitrile copolymer; and (A-4) greater than about 0 wt % and less than or equal to about 10 wt % of an aromatic vinyl compound-vinyl cyanide compound copolymer; and (B) about 5 parts by weight to about 10 parts by weight of a methyl methacrylate-butadiene-styrene copolymer.

2 . The thermoplastic resin composition of claim 1 , wherein the (A-3) methyl methacrylate-styrene-acrylonitrile copolymer is a copolymer of a monomer mixture including about 60 wt % to about 89 wt % of methyl methacrylate, about 10 wt % to about 39 wt % of styrene and greater than about 0 wt % and less than about 20 wt % of acrylonitrile.

3 . The thermoplastic resin composition of claim 1 , wherein the (A-3) methyl methacrylate-styrene-acrylonitrile copolymer has a weight average molecular weight of about 50,000 g/mol to about 200,000 g/mol.

4 . The thermoplastic resin composition of claim 1 , wherein the (A-4) aromatic vinyl compound-vinyl cyanide compound copolymer is a copolymer of a monomer mixture including about 50 wt % to about 90 wt % of the aromatic vinyl compound and about 10 wt % to about 50 wt % of the vinyl cyanide compound.

5 . The thermoplastic resin composition of claim 1 , wherein the (A-4) aromatic vinyl compound-vinyl cyanide compound copolymer has a weight average molecular weight of about 100,000 g/mol to about 200,000 g/mol.

6 . The thermoplastic resin composition of claim 1 , wherein in the (A-4) aromatic vinyl compound-vinyl cyanide compound copolymer,
the vinyl cyanide compound comprises acrylonitrile, methacrylonitrile, fumaronitrile, or a combination thereof.

7 . The thermoplastic resin composition of claim 1 , wherein in the (A-4) aromatic vinyl compound-vinyl cyanide compound copolymer,
the aromatic vinyl compound comprises styrene, halogen- and/or C1 to C10 alkyl group-substituted styrene, α-methyl styrene, or a combination thereof.

8 . The thermoplastic resin composition of claim 1 , wherein the (A-4) aromatic vinyl compound-vinyl cyanide compound copolymer is a styrene-acrylonitrile copolymer (SAN).

9 . The thermoplastic resin composition of claim 1 , wherein the (B) methyl methacrylate-butadiene-styrene copolymer is a graft copolymer having a core-shell structure.

10 . The thermoplastic resin composition of claim 9 , wherein the core consists of a butadiene-based rubbery polymer, and
the shell is formed by graft polymerization of a copolymer of a methyl methacrylate monomer and a styrene monomer on the core.

11 . A molded article using the thermoplastic resin composition of claim 1 .

Assignees

• Lotte Advanced Mat Co Ltd

Inventors

• Kim Myunghun
• Kwon Keehae
• Park Jungeun

Classifications

• C08L2205/035

  containing four or more polymers in a blend · CPC title

• C08L2207/53

  Core-shell polymer · 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

• C08L2201/08

  Stabilised against heat, light or radiation or oxydation · CPC title

• C08L69/00 Primary

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