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EP0352822A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Polycarbonate composition

Assignee: General Electric Co
•
Filing: 1986-12-05
•
Granted: —
•
Expires: 2006-12-05
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Abstract

Abstract A composition comprising (a) 55 to 75 weight percent of an aromatic polycarbonate; (b) 8 to 15 weight percent of a polyalkylene terephthalate wherein the alkylene group is from 2 to about 10 carbon atoms; (c) 4 to 12 weight percent of an acrylonitrile-­butadiene-alkenylaromatic copolymer; and (d) 13 to 22 weight percent of a flame retardant system to maintain a VO rating for a 1.6 mm sample under UL 94 test conditions wherein the overall composition has a DTUL in o C of less than or equal to 115 o C., a 3.2mm Notched Izod impact resistance in kilograms F-cm per cm of at least about 10, a surface gloss as measured with a Hunter Lab's gloss meter at 60 o reflection of less than or equal to about 80 and a VO rating for a 1.6mm sample under UL test conditions.

Inventors

  • 👤 Ping Yuan Liu

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-26 10:17
CPC Classifications
C; C08; C08L; C08L69/00

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 70 words
A composition comprising (a) 55 to 75 weight percent of an aromatic polycarbonate; (b) 8 to 15 weight percent of a polyalkylene terephthalate wherein the alkylene group is from 2 to 10 carbon atoms; (c) 4 to 12 weight percent of an acrylonitrile-butadiene-­alkenyl aromatic copolymer; and (d) 13 to 22 weight percent of a flame retardant system, all weight percent measured on the total of (a), (b), (c) and (d).
Claim 2
Dependent Claim 70 words
A composition comprising (a) 55 to 75 weight percent of an aromatic polycarbonate; (b) 8 to 15 weight percent of a polyalkylene terephthalate wherein the alkylene group is from 2 to 10 carbon atoms; (c) 4 to 12 weight percent of an acrylonitrile-butadiene-­alkenyl aromatic copolymer; and (d) 13 to 22 weight percent of a flame retardant system, all weight percent measured on the total of (a), (b), (c) and (d).
Claim 3
Dependent Claim 21 words
The composition of claim 1 wherein the polyalkylene terephthalate is polyethylene terephthalate or polybutylene terephthalate, and the acrylonitrile-butadiene-alkenylaromatic copolymer is acrylonitrile-butadiene-styrene.
Claim 4
Dependent Claim 12 words
The composition in accordance with claim 1 including a drip retarding agent.
Claim 5
Dependent Claim 12 words
The composition in accordance with claim 1 wherein (a) comprises bisphenol-A polycarbonate.
Claim 6
Dependent Claim 12 words
The composition in accordance with claim 1 wherein (b) comprises polybutylene terephthalate.
Claim 7
Dependent Claim 11 words
The composition in accordance with claim 1 wherein (c) comprises acrylonitrile-butadiene-styrene.
Claim 8
Dependent Claim 29 words
The composition in accordance with any one of claims 1, 5 and 6 wherein (d) comprises a combination of a flame retardant salt and a brominated compound or oligomer.
Claim 9
Dependent Claim 14 words
The composition in accordance with claim 7 wherein an antimony compound is also present.

References Cited (Backward Citations)

US3130177A Cited
US3660531A Cited
US4107232A Cited

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