IP Library › Granted Patent US 7,300,975
Granted Patent B2
US 7,300,975 · App. 11/248,272 · Granted Nov 27, 2007

Flame-retardant polycarbonate resin composition and formed article

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 7,300,975
App. No.
11/248,272
Granted
Nov 27, 2007
Kind
B2
Abstract

A flame-retardant polycarbonate resin composition comprising 100 parts by weight of a resin mixture of (A) from 60 to 99% by weight of a polycarbonate resin and (B) from 1 to 40% by weight of a styrenic resin, and from 0.1 to 10 parts by weight of(C) a functional group having silicone compound, and from 0.02 to 5 parts by weight of (D) a fluoro-olefin resin.

Claims (31)

1. A flame-retardant polycarbonate resin composition comprising 100 parts by weight of a resin mixture of (A) from 60 to 99% by weight of a polycarbonate resin and (B) from 1 to 40% by weight of a styrenic resin, and from 0.1 to 10 parts by weight of (C) a functional group-having silicone compound, and from 0.02 to 5 parts by weight of (D) a fluoro-olefin resins,

wherein the functional group-having silicone compound (C) is an organopolysiloxane having a basic structure of formula (1):

R 1 a R 2 b SiO (4−a−b)/2   (1)

wherein R 1 indicates at least one functional group selected from the group consisting of an alkoxy group, an aryloxy group, a polyoxyalkylene group, a hydroxyl group, a carboxyl group, a silanol group, an amino group, a mercapto group, an epoxy group, and a vinyl group, and R 2 indicates a hydrocarbon residue having from 1 to 12 carbon atoms, and a and b are numbers satisfying the relations of 0<a≦3,0≦b<3, and 0<a+b≦3.

2. The flame-retardant polycarbonate resin composition as claimed in claim 1 , wherein the polycarbonate resin (A) contains at least a polycarbonate-polyorganosiloxane copolymer, and the polyorganosiloxane content of the polycarbonate resin falls between 0.1 and 10% by weight.

3. The flame-retardant polycarbonate resin composition as claimed in claim 1 , wherein the component (A) accounts for from 70 to 95% by weight of the resin mixture, and the component (B) is a rubber-modified styrenic resin and accounts for from 5 to 30% by weight thereof.

4. A molding of the flame-retardant polycarbonate resin composition of claim 1 .

5. An injection molding of the flame-retardant polycarbonate resin composition of claim 1 .

6. A flame-retardant polycarbonate resin composition comprising 100 parts by weight of (A) a polycarbonate resin, from 0.1 to 10 parts by weight of (C) a functional group-having silicone compound, and from 0.2 to 10 parts by weight of (E) a core/shell-type, grafted rubbery elastomer,

wherein the functional group-having silicone compound (C) is an organopolysiloxane having a basic structure of formula (1):

R 1 a R 2 b SiO (4−a−b)/2   (1)

wherein R 1 indicates at least one functional group selected from the group consisting of an alkoxygroup, an aryloxy group, a polyoxyalkylene group, a hydroxyl group, a carboxyl group, a silanol group, an amino group, a mercapto group, an epoxy group, and a vinyl group, and R 2 indicates a hydrocarbon residue having from 1 to 12 carbon atoms, and a and b are numbers satisfying the relations of 0<a≦3,0≦b<3, and 0<a+b≦3.

7. The flame-retardant polycarbonate resin composition as claimed in claim 6 , wherein the polycarbonate resin (A) contains at least a polycarbonate-polyorganosiloxane copolymer, and the polyorganosiloxane content of the polycarbonate resin falls between 0.1 and 10% by weight.

8. The flame-retardant polycarbonate resin composition as claimed in claim 6 , which further contains from 0.02 to 5 parts by weight of (D) a fluoro-olefin resin.

9. A molding of the flame-retardant polycarbonate resin composition of claim 6 .

10. An injection molding of the flame-retardant polycarbonate resin composition of claim 6 .

11. A housing or part adapted for an electric or electronic appliance obtained by injection molding the flame-retardant polycarbonate resin composition of claim 1 .

12. A housing or part adapted for an electric or electronic appliance obtained by injection molding the flame-retardant polycarbonate resin composition of claim 6 .

13. The flame-retardant polycarbonate resin composition as claimed in claim 1 , wherein the functional group of the functional group-having silicone compound is at least one functional group selected from the group consisting of an alkoxy group, an aryloxy group, an epoxy group, and a vinyl group.

14. The flame-retardant polycarbonate resin composition as claimed in claim 1 , wherein the functional group of the functional group-having silicone compound is at least one functional group selected from the group consisting of a methoxy group and a vinyl group.

15. The flame-retardant polycarbonate resin composition according to claim 1 , wherein the functional group of the functional group-having silicone compound is a vinyl group.

16. The flame-retardant polycarbonate resin composition as claimed in claim 6 , wherein the functional group of the functional group-having silicone compound is at least one functional group selected from the group consisting of an alkoxy group, an aryloxy group, an epoxy group, and a vinyl group.

17. The flame-retardant polycarbonate resin composition as claimed in claim 6 , wherein the functional group of the functional group-having silicone compound is at least one functional group selected from the group consisting of a methoxy group and a vinyl group.

18. The flame-retardant polycarbonate resin composition according to claim 6 , wherein the functional group of the functional group-having silicone compound is a vinyl group.

19. The flame-retardant polycarbonate resin composition according to claim 1 , wherein the functional group of the functional group-having silicone compound is at least one vinyl group and at least one methoxy group.

20. The flame-retardant polycarbonate resin composition according to claim 6 , wherein the functional group of the functional group-having silicone compound is at least one vinyl group and at least one methoxy group.

21. The flame-retardant polycarbonate resin composition as claimed in claim 6 , having no halogen.

22. The flame-retardant polycarbonate resin composition as claimed in claim 1 , wherein the functional group is selected from the group consisting of an alkoxy group, an arlyoxy group, a polyoxyalkylene group, a hydroxyl group, a carboxyl group, a silanol group, an amino group, a mercapto group, and an epoxy group.

23. The flame-retardant polycarbonate resin composition as claimed in claim 6 , wherein the functional group is selected from the group consisting of an alkoxy group, an arlyoxy group, a polyoxyallcylene group, a hydroxyl group, a carboxyl group, a silanol group, an amino group, a mercapto group, and an epoxy group.

24. The flame-retardant polycarbonate resin composition as claimed in claim 1 , wherein the functional group is at least one selected from the group consisting of an alkoxy group, an aryloxy group, and an epoxy group.

25. The flame-retardant polycarbonate resin composition as claimed in claim 6 , wherein the functional group is at least one selected from the group consisting of an alkoxy group, an aryloxy group, and an epoxy group.