US4032506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant polycarbonate composition
Assignee: General Electric Co
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Filing: 1976-03-26
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Granted: 1977-06-28
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Expires: 1996-03-26
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 either mixtures of monomeric and polymeric aromatic ether sulfonic acids or polymeric aromatic ether sulfonic acids.
Inventors
- 👤 Victor Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:43
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/485; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/126; C08L2201/00; C08L2201/02; C08L69/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
95 words
A flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and a minor amount of a metal salt of substituted and unsubstituted sulfonic acids of mixtures of monomeric and polymeric aromatic ethers, and polymeric aromatic ethers wherein said metal salts thereof are selected from the group consisting of alkali metals and alkali earth metals, and mixtures of these metal salts, and said substituent on the metal salt of the substituted sulfonic acids of aromatic ethers is selected from the group consisting of electron withdrawing radicals and mixtures of electron withdrawing radicals.
Claim 2
Dependent Claim
95 words
A flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and a minor amount of a metal salt of substituted and unsubstituted sulfonic acids of mixtures of monomeric and polymeric aromatic ethers, and polymeric aromatic ethers wherein said metal salts thereof are selected from the group consisting of alkali metals and alkali earth metals, and mixtures of these metal salts, and said substituent on the metal salt of the substituted sulfonic acids of aromatic ethers is selected from the group consisting of electron withdrawing radicals and mixtures of electron withdrawing radicals.
Claim 3
Dependent Claim
93 words
The composition of claim 1 wherein the metal salt of the substituted and unsubstituted sulfonic acids of monomeric aromatic ethers have the following formula: (R'O).sub.1-2 R' '(SO.sub.3 M).sub.1-6 (X).sub.0-11 wherein R' and R'' are independently selected from the group consisting of aryl radicals of 1-2 aromatic rings and an aliphatic radical of 1-6 carbon atoms, provided, however, that R' and R'' must contain at least one aromatic radical, and wherein M is a metal selected from the group consisting of alkali metals and alkali earth metals and X is an electron withdrawing radical.
Claim 4
Dependent Claim
26 words
The composition of claim 2 wherein the electron withdrawing radicals are selected from the group consisting of halo-, nitro-, trihalomethyl- and cyano- radicals, and mixtures thereof.
Claim 5
Dependent Claim
9 words
The composition of claim 2 wherein X is chlorine.
Claim 6
Dependent Claim
21 words
The composition of claim 2 wherein R' is an aliphatic radical of 1 carbon atom and R'' is a naphthyl radical.
Claim 7
Dependent Claim
9 words
The composition of claim 2 wherein M is sodium.
Claim 8
Dependent Claim
13 words
The composition of claim 2 wherein the metal salt is disodium tetrachlorodiphenylether disulfonate.
Claim 9
Dependent Claim
112 words
The composition of claim 1 wherein the metal salt of the unsubstituted and substituted sulfonic acid of polymeric aromatic ethers have the following formula: [A].sub.x[ B].sub.y[ ArO].sub.n[ Hal].sub.s[ SO.sub.3 M].sub.t H wherein Ar is a phenylene radical, O is oxygen, A is an alkyl radical of 1-4 carbon atoms, B is a phenyl radical, Hal is a halogen selected from fluorine, chlorine and bromine, M is a metal which may be selected from the periodic table of either an alkali metal or an alkali earth metal, n is an integer of from 2 to 300, x, y and s are integers of from 0-600 and t is an integer of from 1-600.
Claim 10
Dependent Claim
9 words
The composition of claim 8 wherein Hal is chlorine.
Claim 11
Dependent Claim
9 words
The composition of claim 8 wherein A is methyl.
Claim 12
Dependent Claim
9 words
The composition of claim 8 wherein M is sodium.
Claim 13
Dependent Claim
12 words
The composition of claim 8 wherein the composition is polysodium poly(2,6-dimethylphenyleneoxide) polysulfonate.
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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) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |