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US4066618A
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Flame retardant polycarbonate composition
Assignee: General Electric Co
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Filing: 1973-12-28
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Granted: 1978-01-03
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Expires: 1993-12-28
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 a halogenated non-aromatic carboxylic acid.
Inventors
- 👤 Victor Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:20
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
85 words
A flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and a flame retardant amount of an additive which is the metal salt of a halogenated non-aromatic carboxylic acid, wherein the metal salt is selected from the group consisting of alkali metals and alkali earth metals, and mixtures thereof, and the halogen is selected from the group consisting of bromine and chlorine and mixtures thereof, and fluorine, provided, however, that when fluorine is used, the carboxylic acid is a dicarboxylic acid.
Claim 2
Dependent Claim
85 words
A flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and a flame retardant amount of an additive which is the metal salt of a halogenated non-aromatic carboxylic acid, wherein the metal salt is selected from the group consisting of alkali metals and alkali earth metals, and mixtures thereof, and the halogen is selected from the group consisting of bromine and chlorine and mixtures thereof, and fluorine, provided, however, that when fluorine is used, the carboxylic acid is a dicarboxylic acid.
Claim 3
Dependent Claim
27 words
The composition of claim 1 wherein the composition comprises 0.01 to about 10.0 weight percent of the additive based on the weight of the aromatic carbonate polymer.
Claim 4
Dependent Claim
29 words
The composition of claim 1 wherein the additive is selected from the group of carboxylic acids containing one to two carboxylic functions and from 1 to 20 carbon atoms.
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein the additive is disodium hexafluoroglutarate.
Claim 6
Dependent Claim
11 words
The composition of claim 1 wherein the additive is sodium trichloroacetate.
Claim 7
Dependent Claim
11 words
The composition of claim 1 wherein the additive is disodium dibromomaleate.
Claim 8
Dependent Claim
11 words
The composition of claim 1 wherein the additive is disodium 1,4,5,6,7,7-hexachlorobicyclo[2.2.1]-5-norbornene-1,2-dicarboxylate.
References Cited (Backward Citations)
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US3365470A
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US3288813A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |