US4277567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-retardant vinyl aromatic polymer compositions
Assignee: Tenneco Polymers Inc
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Filing: 1973-12-10
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Granted: 1981-07-07
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Expires: 1993-12-10
Abstract
Abstract Vinyl aromatic polymer compositions contain a flame-retarding amount of 1,1,2,3,4,4-hexabromobutene-2.
Inventors
- 👤 Donald A. Keyworth
- 👤 David C. Purpi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:48
CPC Classifications
C; C09; C09K; C09K21/00; C09K21/06; C09K21/08; C08; C08K; C08K5/00; C08K5/02; C09D; C09D5/00; C09D5/18; Y; Y10; Y10S; Y10S521/00; Y10S521/907
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
15 words
A flame-retardant resinous composition comprising a vinyl aromatic polymer and a flame-retarding amount of 1,1,2,3,4,4-hexabromobutene-2.
Claim 2
Dependent Claim
15 words
A flame-retardant resinous composition comprising a vinyl aromatic polymer and a flame-retarding amount of 1,1,2,3,4,4-hexabromobutene-2.
Claim 3
Dependent Claim
17 words
A flame-retardant resinous composition as set forth in claim 1 wherein the vinyl aromatic polymer is polystyrene.
Claim 4
Dependent Claim
75 words
A flame-retardant resinous composition as set forth in claim 1 wherein the vinyl aromatic polymer is a copolymer of styrene with a copolymerizable monomer selected from the group consisting of acrylic acid, methacrylic acid, and their esters with alkanols having 1 to 4 carbon atoms; acrylonitrile; vinyl chloride; vinyl carbazole; vinylpyridine; vinyl acetate; maleic acid, fumaric acid, itaconic acid, and their esters with alkanols having 1 to 4 carbon atoms; butadiene; isoprene; and mixtures thereof.
Claim 5
Dependent Claim
19 words
A flame-retardant resinous composition as set forth in claim 3 wherein the vinyl aromatic polymer is an acrylonitrile/butadiene/styrene terpolymer.
Claim 6
Dependent Claim
26 words
A flame-retardant resinous composition as set forth in claim 1 that contains 0.20 percent to 50 percent, based on the weight of the composition, of 1,1,2,3,4,4-hexabromobutene-2.
Claim 7
Dependent Claim
21 words
A flame-retardant resinous composition as set forth in claim 1 wherein the composition is in the form of a foamed article.
Claim 8
Dependent Claim
26 words
A flame-retardant resinous composition as set forth in claim 6 that contains 0.6 percent to 10 percent, based on the weight of the composition, of 1,1,2,3,4,4-hexabromobutene-2.
Claim 9
Dependent Claim
21 words
A flame-retardant resinous composition as set forth in claim 1 wherein the composition is in the form of a non-foamed article.
Claim 10
Dependent Claim
26 words
A flame-retardant resinous composition as set forth in claim 8 that contains 10 percent to 25 percent, based on the weight of the composition, of 1,1,2,3,4,4-hexabromobutene-2.
Claim 11
Dependent Claim
33 words
A flame-retardant resinous composition as set forth in claim 1 wherein the 1,1,2,3,4,4-hexabromobutene-2 is a mixture of isomers containing about 90 percent of the trans isomer and 10 percent of the cis isomer.
Claim 12
Dependent Claim
19 words
A self-extinguishing, expandable styrene polymer composition comprising a styrene polymer and 0.2 to 50 percent by weight of hexabromo-2-butene.
Claim 13
Dependent Claim
19 words
A self-extinguishing, expandable styrene polymer composition comprising a styrene polymer and 0.2 to 50 percent by weight of hexabromo-2-butene.
Claim 14
Dependent Claim
11 words
The composition of claim 11 wherein the hexabromo-2-butene is predominantly trans-1,1,2,3,4,4-hexabromo-2-butene.
Claim 15
Dependent Claim
11 words
Self-extinguishing, foamed articles prepared by molding the composition of claim 11.
References Cited (Backward Citations)
US2267712A
Cited
US2676927A
Cited
US2760947A
Cited
US3652690A
Cited
US3677942A
Cited
US3666692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-06 | 1985-01-05 | 1985-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-06 | 1989-01-05 | 1989-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-06 | 1993-01-05 | 1993-07-07 | $7700.00 | Window Closed / Lapsed |