EP0105090A1
Expired / Lapsed
EP
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Polycarbonate composition
Assignee: General Electric Co
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Filing: 1983-06-21
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Granted: —
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Expires: 2003-06-21
Abstract
Abstract 1. A polycarbonate composition comprising a. about 2 to 30 weight percent of carbon black, b. about 0.3 to 3 weight percent of a phosphite stabilizer, and c. about 67 to 97.7 weight percent of an aromatic polycarbonate, each of a, b and c calculated as the weight percent of total a+b+c.
Inventors
- 👤 Jan Bussink
- 👤 Petrus Cornelus Van Abeelen
- 👤 Willem Lodewijk Sederel
- 👤 J. Starr
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 02:50
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K5/00; C08K5/04; C08K5/10; C08K5/49; C08K5/51; C08K5/52; C08K5/524; C08L; C08L69/00; C08L83/00; C08L83/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
51 words
A polycarbonate composition comprising a. about 2 to 30 weight percent of carbon black, b. about 0.3 to 3 weight percent of a phosphite stabilizer, and c. about 67 to 97.7 weight percent of an aromatic polycarbonate, each of a, b and c calculated as the weight percent of total a+b+c.
Claim 2
Dependent Claim
51 words
A polycarbonate composition comprising a. about 2 to 30 weight percent of carbon black, b. about 0.3 to 3 weight percent of a phosphite stabilizer, and c. about 67 to 97.7 weight percent of an aromatic polycarbonate, each of a, b and c calculated as the weight percent of total a+b+c.
Claim 3
Dependent Claim
21 words
A composition in accordance with claim 1 wherein further included are polycarbonate degradation inhibiting quantities of a plasticizer or a polysiloxane.
Claim 4
Dependent Claim
18 words
A composition in accordance with claim 2 wherein the plasticizer is from about 0.5-20 weight percent of a+b+c.
Claim 5
Dependent Claim
20 words
A composition in accordance with claim 2 wherein the polysiloxane is from about 0.3 to 5 weight percent of a+b+c.
Claim 6
Dependent Claim
33 words
A composition in accordance with claim 4 wherein the plasticizer is from about 0.5 to 20 weight percent of a+b+c and the polysiloxane is from about 0.3 to 5 weight percent of a+b+c.
Claim 7
Dependent Claim
41 words
A composition in accordance with claim 1 wherein the phosphite is of the formula wherein each R l is the same or different and are hydrogen, alkyl, aryl or alkaryl, or two of the groups R l together form a ring.
Claim 8
Dependent Claim
41 words
A composition in accordance with claim 2 wherein the phosphite is of the formula wherein each R 1 is the same or different and are hydrogen, alkyl, aryl, or alkaryl or two of the groups R 1 together form a ring.
Claim 9
Dependent Claim
41 words
A composition in accordance with claim 3 wherein the phosphite is of the formula wherein each R 1 is the same or different and are hydrogen, alkyl, aryl, or alkaryl or two of the groups R 1 together form a ring.
Claim 10
Dependent Claim
35 words
A composition in accordance with claim 4 wherein the polysiloxane is of the formula wherein each R 2 is the same or different and is hydrogen, alkyl or aryl and n + m is 5-200.
Claim 11
Dependent Claim
14 words
A composition in accordance with claim 9 wherein the polysiloxane is a polymethylhydrogen siloxane.
References Cited (Backward Citations)
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