US4138379A
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US
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Organic silane stabilized and plasticized polycarbonate composition
Assignee: General Electric Co
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Filing: 1977-12-28
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Granted: 1979-02-06
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Expires: 1997-12-28
Abstract
Abstract A stabilized and plasticized polycarbonate composition comprising in admixture, an aromatic carbonate polymer and a stabilizing amount of an essentially monomeric organic silane. The composition can additionally contain a phosphite and/or an epoxy compound.
Inventors
- 👤 Steven W. Scott
- 👤 Howard A. Vaughn, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:39
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08K5/549; C08K5/49; C08K5/51; C08K5/52; C08L; C08L63/00; C08L69/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
32 words
A plasticized and stabilized polycarbonate composition comprising in admixture an aromatic carbonate polymer and a plasticizing and stabilizing amount of an essentially monomeric organic silane characterized by the following general formulae: ##STR9##
Claim 2
Dependent Claim
32 words
A plasticized and stabilized polycarbonate composition comprising in admixture an aromatic carbonate polymer and a plasticizing and stabilizing amount of an essentially monomeric organic silane characterized by the following general formulae: ##STR9##
Claim 3
Dependent Claim
51 words
The composition of claim 1 which contains a stabilizing amount of an organophosphite of the formula: ##STR10## wherein R 1 , R 2 and R 3 are independently selected from the group consisting of hydrogen, alkyl, aryl, cycloalkyl, aralkyl and alkylaryl radicals wherein at least one R is other than hydrogen.
Claim 4
Dependent Claim
197 words
The composition of claim 1 which contains a stabilizing amount of an epoxy compound selected from the following: I. derivatives of epoxy ethane represented by the following formula: ##STR11## wherein R 1 , R 2 , R 3 and R 4 are independently selected from the group consisting of hydrogen, an alkyl radical of 1-24 carbon atoms, an aryl radical of 6-24 carbon atoms, --CH 2 OR', --CH 2 OCOR', --CH 2 OCOR'X, --'COOCH 2 X, --CH 2 OR"OCH 2 X wherein R' is selected from the group consisting of an alkyl radical of 1-24 carbon atoms or an aryl radical of 6 to 24 carbon atoms and wherein R" is an alkylene radical of 1-24 carbon atoms and X is an oxirane ring; Ii. derivatives of epoxy cyclohexane represented by the following formula: ##STR12## wherein R 5 through R 12 are independently selected from the group consisting of hydrogen, alkyl radicals of 1-24 carbon atoms, --COOR 13 , --OCOR 13 , --COOR 14 X, --OCOR 14 --COOX wherein R 13 is an alkyl radical of 1-24 carbon atoms and R 14 therein is an alkylene radical of 1-24 carbon atoms and X is an oxirane ring.
Claim 5
Dependent Claim
51 words
The composition of claim 3 which contains a stabilizing amount of a organophosphite of the formula: ##STR13## wherein R 1 , R 2 and R 3 are independently selected from the group consisting of hydrogen, alkyl, aryl, cycloalkyl, aralkyl and alkylaryl radicals wherein at least one R is other than hydrogen.
References Cited (Backward Citations)
US3673146A
Cited
US4066611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |