Thermoplastic Resin Composition and Molded Article Using the Same

Patent metadata

Field	Value
Publication number	US-2020102455-A1
Application number	US-201916583501-A
Country	US
Kind code	A1
Filing date	Sep 26, 2019
Priority date	Sep 28, 2018
Publication date	Apr 2, 2020
Grant date	—

Abstract

Disclosed are a thermoplastic resin composition including about 100 parts by weight of a base resin including (A) about 80 wt % to about 90 wt % of a polycarbonate resin; (B) about 5 wt % to about 10 wt % of an aromatic vinyl-vinyl cyanide copolymer; (C) about 3 wt % to about 7 wt % of an acrylonitrile-butadiene-styrene graft copolymer; and (D) about 2 wt % to about 8 wt % of a methylmethacrylate-butadiene-styrene graft copolymer, (E) about 0.1 to 0.3 parts by weight of a phosphate-based heat stabilizer; and (F) about 5 parts by weight to about 25 parts by weight of an inorganic filler having an average particle diameter (D50) of about 1 μm to about 5 μm, and a molded article made using the same.

First claim

What is claimed is:

1 . A thermoplastic resin composition comprising:
about 100 parts by weight of a base resin comprising: (A) about 80 wt % to about 90 wt % of a polycarbonate resin; (B) about 5 wt % to about 10 wt % of an aromatic vinyl-vinyl cyanide copolymer; (C) about 3 wt % to about 7 wt % of an acrylonitrile-butadiene-styrene graft copolymer; and (D) about 2 wt % to about 8 wt % of a methylmethacrylate-butadiene-styrene graft copolymer; (E) about 0.1 to 0.3 parts by weight of a phosphate-based heat stabilizer based on about 100 parts by weight of the base resin; and (F) about 5 parts by weight to about 25 parts by weight of an inorganic filler based on about 100 parts by weight of the base resin having an average particle diameter (D50) of about 1 μm to about 5 μm.

2 . The thermoplastic resin composition of claim 1 , wherein the (A) polycarbonate resin has a melt flow index of about 15 g/10 min to about 25 g/10 min, measured at 300° C. under a 1.2 kg load condition in accordance with ASTM D1238.

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

4 . The thermoplastic resin composition of claim 1 , wherein the (B) aromatic vinyl-vinyl cyanide copolymer has a weight average molecular weight of about 80,000 g/mol to about 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 including 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 about 30 wt % to about 60 wt % of the core and about 40 wt % to about 70 wt % of the shell based on 100 wt % of the graft copolymer.

8 . The thermoplastic resin composition of claim 1 , wherein the (C) acrylonitrile-butadiene-styrene graft copolymer comprises a butadiene-based rubbery polymer having an average particle diameter of about 200 nm to about 400 nm.

9 . The thermoplastic resin composition of claim 1 , wherein the (D) methylmethacrylate-butadiene-styrene graft copolymer has a core-shell structure comprising:
a core including a butadiene-based rubbery polymer, and a shell formed by graft polymerization of methylmethacrylate and/or styrene on the core.

10 . The thermoplastic resin composition of claim 1 , wherein the (E) phosphate-based heat stabilizer comprises dihydrogen phosphate, stearyl phosphate, trimethyl phosphate, triethyl phosphate, triphenyl phosphate, or a combination thereof.

11 . The thermoplastic resin composition of claim 1 , wherein the (F) inorganic filler comprises montmorillonite, talc, kaolin, zeolite, vermiculite, aluminum oxide, silica, magnesium hydroxide, aluminum hydroxide, glass flake, or a combination thereof.

12 . The thermoplastic resin composition of claim 1 , wherein the thermoplastic resin composition further comprises at least one additive comprising a flame retardant, a nucleating agent, a coupling agent, a glass fiber, a plasticizer, a lubricant, an antibacterial agent, a release agent, an antioxidant, an ultraviolet (UV) stabilizer, an antistatic agent, a pigment, and/or a dye.

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

Assignees

• Lotte Advanced Mat Co Ltd

Inventors

• Kim Myunghun
• Kwon Keehae
• Hong Jaekeun

Classifications

• 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

• C08L69/00 Primary

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

• C08L2201/08

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

• C08L2205/035

  containing four or more polymers in a blend · CPC title

• C08L2207/04

  Thermoplastic elastomer · CPC title