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US4067846A
Expired / Lapsed
US
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Non-opaque flame retardant polycarbonate composition
Assignee: General Electric Co
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Filing: 1975-10-29
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Granted: 1978-01-10
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Expires: 1995-10-29
Abstract
Abstract A non-opaque flame retardant polycarbonate composition comprising in admixture an aromatic carbonate polymer and an additive which may be the metal salts of sulfonic acids of aromatic sulfides; said aromatic carbonate polymer and additive having a refractive index in the range of 1.54 to 1.65.
Inventors
- 👤 Victor Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:18
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
125 words
A non-opaque flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and from 0.001 to about 2.0 parts per hundred parts of the aromatic carbonate polymer of an additive selected from the group consisting of the metal salts of substituted and unsubstituted sulfonic acids of aromatic sulfides, and mixtures thereof, wherein said metal salts are selected from the group consisting of alkali metals and alkaline earth metals, and mixtures of these metal salts, and said substituent on the metal salt of the substituted sulfonic acids of aromatic sulfides is selected from the group consisting of electron withdrawing radicals and mixtures of electron withdrawing radicals; said aromatic carbonate polymer and additive having a refractive index in the range of 1.54 to 1.65.
Claim 2
Dependent Claim
125 words
A non-opaque flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and from 0.001 to about 2.0 parts per hundred parts of the aromatic carbonate polymer of an additive selected from the group consisting of the metal salts of substituted and unsubstituted sulfonic acids of aromatic sulfides, and mixtures thereof, wherein said metal salts are selected from the group consisting of alkali metals and alkaline earth metals, and mixtures of these metal salts, and said substituent on the metal salt of the substituted sulfonic acids of aromatic sulfides is selected from the group consisting of electron withdrawing radicals and mixtures of electron withdrawing radicals; said aromatic carbonate polymer and additive having a refractive index in the range of 1.54 to 1.65.
Claim 3
Dependent Claim
114 words
A shaped article having a refractive index in the range of 1.54 to 1.65 comprising in admixture an aromatic carbonate polymer and from 0.001 to about 2.0 parts per hundred parts of the aromatic carbonate polymer of an additive selected from the group consisting of the metal salts of substituted and unsubstituted sulfonic acids of aromatic sulfides, and mixtures thereof, wherein said metal salts are selected from the group consisting of alkali metals and alkaline earth metals, and mixtures of these metal salts, and said substituent on the metal salt of the substituted sulfonic acids of aromatic sulfides is selected from the group consisting of electron withdrawing radicals and mixtures of electron withdrawing radicals.
Claim 4
Dependent Claim
114 words
A shaped article having a refractive index in the range of 1.54 to 1.65 comprising in admixture an aromatic carbonate polymer and from 0.001 to about 2.0 parts per hundred parts of the aromatic carbonate polymer of an additive selected from the group consisting of the metal salts of substituted and unsubstituted sulfonic acids of aromatic sulfides, and mixtures thereof, wherein said metal salts are selected from the group consisting of alkali metals and alkaline earth metals, and mixtures of these metal salts, and said substituent on the metal salt of the substituted sulfonic acids of aromatic sulfides is selected from the group consisting of electron withdrawing radicals and mixtures of electron withdrawing radicals.
Claim 5
Dependent Claim
92 words
The shaped article of claim 2 wherein the metal salts of the substituted and unsubstituted sulfonic acids of aromatic sulfides have the following formula: R'(S).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 alkaline earth metals and X is an electron withdrawing radical.
Claim 6
Dependent Claim
27 words
The shaped article of claim 3 wherein the electron withdrawing radical is selected from the group consisting of halo-, nitro-, trihalomethyl- and cyano- radicals and mixtures thereof.
Claim 7
Dependent Claim
10 words
The shaped article of claim 2 wherein X is chlorine.
Claim 8
Dependent Claim
18 words
The shaped article of claim 2 wherein R' and R" are aryl radicals of one aromatic ring each.
Claim 9
Dependent Claim
10 words
The shaped article of claim 2 wherein M is calcium.
Claim 10
Dependent Claim
13 words
The shaped article of claim 2 wherein the metal salt is potassium diphenylsulfide-4-sulfonate.
Claim 11
Dependent Claim
13 words
The shaped article of claim 2 wherein the metal salt is potassium 4-chlorodiphenylsulfide-4'-sulfonate.
Claim 12
Dependent Claim
13 words
The shaped article of claim 2 wherein the metal salt is potassium methyl-phenylsulfide-4-sulfonate.
Claim 13
Dependent Claim
12 words
The shaped article of claim 2 in the form of a sheet.
Claim 14
Dependent Claim
12 words
The shaped article of claim 2 in the form of a pellet.
References Cited (Backward Citations)
US3909490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |