US3931100A
Expired / Lapsed
US
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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: 1976-01-06
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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 aliphatic and olefinic sulfonic acids, and mixtures thereof.
Inventors
- 👤 Victor Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:14
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
111 words
A flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and a minor amount of an additive having the following formula: (X.sub.m R').sub.s [(X.sub.n R)(SO.sub.3 M)].sub.p wherein X is an electron withdrawing radical, M is a metal selected from the group consisting of alkali metals and alkaline earth metals, R' is an aryl radical of 1-2 aromatic rings, R is an organic radical selected from the group consisting of cycloaliphatic, olefinic and cycloolefinic radicals of 1-10 carbon atoms, n and m are integers of from 0-11, s is an integer of from 0-5 and p is an integer of from 1-4; or mixtures of the above formula.
Claim 2
Dependent Claim
111 words
A flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and a minor amount of an additive having the following formula: (X.sub.m R').sub.s [(X.sub.n R)(SO.sub.3 M)].sub.p wherein X is an electron withdrawing radical, M is a metal selected from the group consisting of alkali metals and alkaline earth metals, R' is an aryl radical of 1-2 aromatic rings, R is an organic radical selected from the group consisting of cycloaliphatic, olefinic and cycloolefinic radicals of 1-10 carbon atoms, n and m are integers of from 0-11, s is an integer of from 0-5 and p is an integer of from 1-4; or mixtures of the above formula.
Claim 3
Dependent Claim
27 words
The composition of claim 1 wherein the composition comprises 0.01 to about 10 weight percent of the additive based on the weight of the aromatic polymer composition.
Claim 4
Dependent Claim
25 words
The composition of claim 1 wherein the electron withdrawing radical is selected from the group consisting of halo-, nitro-, trihalomethyl- and cyano-radicals, and mixtures thereof.
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein the additive is sodium 2,3,4,5,6-pentachloro-beta-styrenesulfonate.
Claim 6
Dependent Claim
11 words
The composition of claim 1 wherein the additive is sodium trichlorovinylsulfonate.
Claim 7
Dependent Claim
12 words
The composition of claim 1 wherein the additive is sodium heptafluorocyclobutane sulfonate.
References Cited (Backward Citations)
US3775367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |