Back to results
US 2008/0076866 A1Published application
Polycarbonate resin composition and molded article
AssigneeIdemitsu Kosan Co., Ltd.
InventorsKenichi MITSUHASHI, Akio Nodera, Hiroshi Kawato, Toshio Isozaki
Life of this patent
Estimating the term…
Abstract
Provided are a polycarbonate resin composition which does not contain halogen and phosphorus as a flame retardant component and which is excellent in a fluidity while maintaining a flame resistance, a heat resistance and an impact resistance and a molded article thereof.
Claims15
1:
- A polycarbonate resin composition, comprising:
- (A) an aromatic polycarbonate resin mixture comprising a polyorganosiloxane-containing aromatic polycarbonate resin in an amount of from 60 to 97 mass %;
- and
- (B) an acrylonitrile-styrene base resin having a melt flow rate (MFR) of 5 or more at 200° C. and a load of 5 kg in an amount of from 3 to 40 mass %;
- wherein:
- the composition optionally comprises per 100 mass parts of (A) and (B):
- (C) an impact resistance-improving agent in an amount of 0 to 37 mass parts;
- (D) an organic alkali metal salt and/or an organic alkali earth metal salt in an amount of from 0 to 3 mass parts;
- (E) a functional group-containing silicone compound in an amount of from 0 to 3 mass parts;
- (F) an inorganic filler in an amount of from 0 to 55 mass parts;
- and
- (G) a polyfluoroolefin resin in an amount of from 0 to 2 mass parts;
- the organic alkali metal salt and/or the organic alkali earth metal salt (D) comprises at least one member selected from the group consisting of sulfonic acid alkali metal salts, sulfonic acid alkali earth metal salts, polystyrenesulfonic acid alkali metal salts and polystyrenesulfonic acid alkali earth metal salts;
- and
- the composition is free from halogen-based and phosphorous-based flame retardants.
12 more elements
2:
- The polycarbonate resin composition as claimed in claim 1, wherein the acrylonitrile-styrene base resin has a melt flow rate (MFR) of 15 or more at 200° C. and a load of 5 kg.
3:
- The polycarbonate resin composition as claimed in claim 1, wherein the acrylonitrile-styrene base resin has a melt flow rate (MFR) of 30 or more at 200° C. and a load of 5 kg.
4:
- The polycarbonate resin composition as claimed in claim 1, wherein polyorganosiloxane of the polyorganosiloxane-containing aromatic polycarbonate resin is polydimethylsiloxane.
5:
- The polycarbonate resin composition as claimed in claim 1, wherein a molecular end of the aromatic polycarbonate resin is an alkyl group having 10 to 35 carbon atoms.
6:
- The polycarbonate resin composition as claimed in claim 1, wherein the acrylonitrile-styrene base resin is an acrylonitrile-styrene copolymer.
7:
- The polycarbonate resin composition as claimed in claim 1, wherein the impact resistance-improving agent is a core/shell type elastomer and/or a rubber component-containing styrene base resin.
8:
- The polycarbonate resin composition as claimed in claim 1, wherein the functional group-containing silicone compound is organopolysiloxane having a fundamental structure presented by Formula (1):
- R1aR2bSiO(4-a-b)/2 (1)
- wherein R1 represents a functional group;
- R2 represents a hydrocarbon group having 1 to 12 carbon atoms;
- and a and b are numbers satisfying the relation of 0<a≦3, 0≦b<3 and 0<a+b≦3.
2 more elements
9:
- The polycarbonate resin composition as claimed in claim 8, wherein R1 is at least one selected from an alkoxy group, a hydrogen group, a hydroxyl group, an epoxy group and a vinyl group.
10:
- The polycarbonate resin composition as claimed in claim 1, wherein the inorganic filler is selected from a tabular filler and a glass fiber.
11:
- The polycarbonate resin composition as claimed in claim 10, wherein the tabular filler is at least one selected from talc, mica and wollastonite.
12:
- The polycarbonate resin composition as claimed in claim 1, blended with 1 to 20 mass parts of the tabular filler and 5 to 35 mass parts of the glass fiber as the inorganic filler.
13:
- The polycarbonate resin composition as claimed in claim 1, wherein the polyfluoroolefin resin is polytetrafluoroethylene.
14:
- The polycarbonate resin composition as claimed in claim 13, wherein the polytetrafluoroethylene is endowed with a fibril-forming ability and has an average molecular weight of 500,000 to 10,000,000.
15:
- A molded article comprising the polycarbonate resin composition as described in claim 1.