Polycarbonate resin composition
View Patent ↗The invention relates to a polycarbonate resin composition, including (1) a colored composition that comprises two types of specifically-terminated aromatic polycarbonates along with an inorganic filler added thereto, (2) a composition that comprises a polycarbonate resin terminated with a specific phenoxy group, a functional group-having silicone compound and a core/shell-type grafted rubber-like elastomer, and (3) a composition that comprises a specifically-terminated aromatic polycarbonate-polyorganosiloxane copolymer, a specifically-terminated aromatic polycarbonate and a fibril-forming polytetrafluoroethylene.
1. A colored polycarbonate resin composition, comprising:
(i) 100 parts by weight of a polycarbonate resin comprising
from 10 to 100% by weight of an aromatic polycarbonate (A) having a terminal group of the following general formula (I-1):
wherein R 1 represents a branched alkyl group having from 10 to 35 carbon atoms, and
from 0 to 90% by weight of an aromatic polycarbonate (B) having a terminal group of the following general formula (I-2):
wherein R 2 represents an alkyl group having from 1 to 9 carbon atoms, an aryl group having from 6 to 20 carbon atoms, or a halogen atom, and a indicates an integer of from 0 to 5, and
(ii) from 5 to 150 parts by weight of glass fibers (C);
(iii) from 100 to 5,000 ppm of a colorant.
2. The polycarbonate resin composition as claimed in claim 1 , wherein said colorant is carbon black.
3. The polycarbonate resin composition as claimed in claim 1 , wherein the polycarbonate resin has a viscosity-average molecular weight of from 10,000 to 40,000.
4. Parts of electric and electronic appliances, parts of electrically-powered tools or parts of cameras, comprising:
the polycarbonate resin composition of claim 1 .
5. The polycarbonate resin composition as claimed in claim 1 , wherein component (B) is present in said polycarbonate resin.
6. The polycarbonate resin composition as claimed in claim 1 , wherein said glass fibers have a length of from 0.1 to 8 mm.
7. The polycarbonate resin composition as claimed in claim 1 , wherein said glass fibers have a diameter of from 0.1 to 30 μm.
8. The polycarbonate resin composition as claimed in claim 1 , wherein said glass fibers are in the form of rovings, milled fibers, chopped fibers and mixtures thereof.
9. The polycarbonate resin composition as claimed in claim 1 , wherein said glass fibers are surface treated.
10. The polycarbonate resin composition as claimed in claim 9 , wherein said glass fibers are treated with a sizing agent.