US4069201A
Expired / Lapsed
US
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Flame retardant polycarbonate composition
Assignee: General Electric Co
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Filing: 1975-12-22
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Granted: 1978-01-17
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Expires: 1995-12-22
Abstract
Abstract A flame retardant polycarbonate composition comprising in admixture an aromatic carbonate polymer and a flame retardant additive which may be the metal salts of unsubstituted or halogenated oxocarbon acids, or mixtures of these.
Inventors
- 👤 Victor Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:19
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
28 words
A flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and a minor amount of an oxocarbon acid additive, said additive being disodium chloranilate.
Claim 2
Dependent Claim
28 words
A flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and a minor amount of an oxocarbon acid additive, said additive being disodium chloranilate.
Claim 3
Dependent Claim
28 words
A flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and a minor amount of an oxocarbon acid additive, said additive being sodium pentachloro-2-cyclopenten3-ol-1-one.
Claim 4
Dependent Claim
28 words
A flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and a minor amount of an oxocarbon acid additive, said additive being sodium pentachloro-2-cyclopenten3-ol-1-one.
Claim 5
Dependent Claim
28 words
A flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and a minor amount of an oxocarbon acid additive, said additive being sodium pentachlorobicyclo-2,6-heptadien-2-ol-4-one.
Claim 6
Dependent Claim
28 words
A flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and a minor amount of an oxocarbon acid additive, said additive being sodium pentachlorobicyclo-2,6-heptadien-2-ol-4-one.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |