US4039509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-opaque flame retardant polycarbonate composition
Assignee: General Electric Co
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Filing: 1975-10-29
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Granted: 1977-08-02
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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 heterocyclic sulfonic acids; 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
2026-11-03 07:24
CPC Classifications
C; C08; C08L; C08L69/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
159 words
A non-opaque flame retardant aromatic 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 heterocyclic compounds, and mixtures thereof, wherein said metal salts thereof are selected from the group consisting of alkali metals and alkaline earth metals, and mixtures of the metal salts, and wherein said substituent on the metal salt of the substituted sulfonic acids of heterocyclic compounds is selected from the group consisting of an electron withdrawing radical and mixtures of electron withdrawing radicals; and wherein said heterocyclic compound is selected from the group consisting of five and six membered heterocyclic nuclei containing a hetero atom selected from the group consisting of nitrogen, oxygen and sulfur; said aromatic carbonate polymer and additive having a refractive index in the range of 1.54 to 1.65.
Claim 2
Dependent Claim
159 words
A non-opaque flame retardant aromatic 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 heterocyclic compounds, and mixtures thereof, wherein said metal salts thereof are selected from the group consisting of alkali metals and alkaline earth metals, and mixtures of the metal salts, and wherein said substituent on the metal salt of the substituted sulfonic acids of heterocyclic compounds is selected from the group consisting of an electron withdrawing radical and mixtures of electron withdrawing radicals; and wherein said heterocyclic compound is selected from the group consisting of five and six membered heterocyclic nuclei containing a hetero atom selected from the group consisting of nitrogen, oxygen and sulfur; said aromatic carbonate polymer and additive having a refractive index in the range of 1.54 to 1.65.
Claim 3
Dependent Claim
149 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 heterocyclic compounds, and mixtures thereof, wherein said metal salts thereof are selected from the group consisting of alkali metals and alkaline earth metals, and mixtures of the metal salts, and wherein said substituent on the metal salt of the substituted sulfonic acids of heterocyclic compounds is selected from the group consisting of an electron withdrawing radical and mixtures of electron withdrawing radicals; and wherein said heterocyclic compound is selected from the group consisting of five and six membered heterocyclic nuclei containing a hetero atom selected from the group consisting of nitrogen, oxygen and sulfur.
Claim 4
Dependent Claim
149 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 heterocyclic compounds, and mixtures thereof, wherein said metal salts thereof are selected from the group consisting of alkali metals and alkaline earth metals, and mixtures of the metal salts, and wherein said substituent on the metal salt of the substituted sulfonic acids of heterocyclic compounds is selected from the group consisting of an electron withdrawing radical and mixtures of electron withdrawing radicals; and wherein said heterocyclic compound is selected from the group consisting of five and six membered heterocyclic nuclei containing a hetero atom selected from the group consisting of nitrogen, oxygen and sulfur.
Claim 5
Dependent Claim
131 words
The shaped article of claim 2 wherein the metal salts of substituted and unsubstituted sulfonic acids of heterocyclic compounds has the following formula: X.sub.0-15 R(SO.sub.3 M).sub.1-6 wherein X is an electron withdrawing radical and M is a metal selected from the group consisting of alkali metal and alkaline earth metal and R is an organic nucleus selected from the group of organic heterocyclic nuclei consisting of: ##STR5## wherein Z is selected from the hetero atoms consisting of sulfur, oxygen and nitrogen, ##STR6## wherein Z and Z' are independently selected from the group consisting of carbon and the hetero atoms, nitrogen, sulfur and oxygen, providing that at least one Z is an hetero arom. ##STR7## D. Phthalocyanine ##STR8## wherein Z is selected from the hetero atoms consisting of sulfur, oxygen and nitrogen.
Claim 6
Dependent Claim
27 words
The shaped article of claim 2 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
12 words
The shaped article of claim 3 wherein the additive is sodium 2,5-dichlorothiophene-3-sulfonate.
Claim 8
Dependent Claim
12 words
The shaped article of claim 3 wherein the additive is sodium 2,6-dichloropyridine-3-sulfonate.
Claim 9
Dependent Claim
12 words
The shaped article of claim 3 wherein the additive is disodium indigo-5,5'-disulfonate.
Claim 10
Dependent Claim
14 words
The shaped article of claim 3 wherein the additive is tetrasodium copper phthalocyanine tetrasulfonate.
Claim 11
Dependent Claim
12 words
The shaped article of claim 3 wherein the additive is calcium 2,5-dichlorothiophene-3-sulfonate.
Claim 12
Dependent Claim
12 words
The shaped article of claim 3 wherein the additive is potassium 2,5-dichlorothiophene-3-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)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |