Polycarbonate resin composition having excellent thermal decomposition resistance

Patent metadata

Field	Value
Publication number	US-10344162-B2
Application number	US-201615578883-A
Country	US
Kind code	B2
Filing date	Jun 3, 2016
Priority date	Jun 4, 2015
Publication date	Jul 9, 2019
Grant date	Jul 9, 2019

Abstract

Provided is a polycarbonate resin composition containing 1-20 parts by weight of an amorphous thermoplastic resin having a glass transition temperature of not lower than 110° C., and 1-50 parts by weight of plate-shaped fillers having a number average major axis length of 0.5-45 μm, with respect to 100 parts by weight of a matrix resin component containing 35-95 wt % of a polycarbonate resin and 5-65 wt % of a thermoplastic polyester resin.

First claim

The invention claimed is:

1. A polycarbonate resin composition comprising: 100 parts by weight of a resin component containing not less than 35 wt % and not more than 95 wt % of a polycarbonate resin (A), and not less than 5 wt % and not more than 65 wt % of a thermoplastic polyester resin (B); not less than 1 part by weight and not more than 20 parts by weight of an amorphous thermoplastic resin (C) having a glass transition temperature of not lower than 110° C.; and not less than 1 part by weight and not more than 50 parts by weight of plate-shaped fillers (D) having a number average major axis length of not less than 0.5 μm and not more than 45 μm.

2. The polycarbonate resin composition according to claim 1 , wherein the amorphous thermoplastic resin (C) is incompatible with the polycarbonate resin (A) and is incompatible with the thermoplastic polyester resin (B).

3. The polycarbonate resin composition according to claim 1 , wherein the amorphous thermoplastic resin (C) is at least one amorphous resin selected from the group consisting of polyphenylene ether resins, polyarylate resins, polyetherimide resins, polysulfone resins, and modified styrene resins.

4. The polycarbonate resin composition according to claim 1 , wherein the polycarbonate resin composition has a deflection temperature under load of not lower than 110° C. and not higher than 120° C.

5. The polycarbonate resin composition according to claim 1 , wherein the polycarbonate resin composition has a weight reduction start temperature of not lower than 410° C. and not higher than 420° C. as measured using a differential thermal/thermogravimetric simultaneous measurement device.

6. A molded article comprising the polycarbonate resin composition according to claim 1 .

7. The molded article according to claim 6 , wherein the molded article has a maximum projected area of not less than 10,000 mm 2 and not more than 10,000,000 mm 2 .

Assignees

• Kaneka Corp

Inventors

• Kawakubo Hidekazu
• Saegusa Kazunori
• Nakatani Kazushi

Classifications

• C08L69/00 Primary

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

• C08L2205/03

  containing three or more polymers in a blend · CPC title

• G01N5/04

  by removing a component, e.g. by evaporation, and weighing the remainder · CPC title

• C08L2201/08

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

• C08L67/00

  Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain (of polyester-amides C08L77/12; of polyester-imides C08L79/08); Compositions of derivatives of such polymers · CPC title