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US3989531A
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Fire-retardant polymeric compositions containing brominated biphenols
Assignee: General Electric Co
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Filing: 1974-03-12
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Granted: 1976-11-02
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Expires: 1994-03-12
Abstract
Abstract Bromobiphenols comprising 2,2' ,6,6'-tetraalkyl-3,3',5,5'-tetrabromo-1,1'-biphenols and derivatives thereof are employed as fire-retardant additives for normally flammable resins yielding fire-retardant polymeric compositions. These fire-retardant compositions are thermally stable and can be molded or formed into fire-retardant articles, such as films, sheeting, fibers, laminates, or reinforced plastics by conventional techniques.
Inventors
- 👤 Charles M. Orlando
- 👤 Francois A. Lavallee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:00
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/20; C10L1/203; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/30; C08G63/00; C08G63/68; C08G63/682; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/109; C08K5/13; C08K5/136; C08L; C08L25/00; C08L25/02; C08L25/04; C08L67/00; C08L67/02; C08L2201/00; C08L2201/02; C08L69/00; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S525/00; Y10S525/905
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
59 words
A fire-retardant polymeric composition comprising a. a normally flammable polystyrene resin, and b. a fire-retardant additive selected from halogenated monomeric and polymeric organic compounds of the formula: ##SPC6## wherein each R independently is selected from primary alkyl groups, each R 1 independently is selected from hydrogen, or organic radicals, and n is a positive integer of at least 1.
Claim 2
Dependent Claim
59 words
A fire-retardant polymeric composition comprising a. a normally flammable polystyrene resin, and b. a fire-retardant additive selected from halogenated monomeric and polymeric organic compounds of the formula: ##SPC6## wherein each R independently is selected from primary alkyl groups, each R 1 independently is selected from hydrogen, or organic radicals, and n is a positive integer of at least 1.
Claim 3
Dependent Claim
64 words
A composition in accordance with claim 1(b), wherein the additive is a fire-retardant polymeric composition containing a unit of the formula: ##SPC7## wherein R is a primary alkyl group, n is a positive integer of at least 1, and a unit of the formula: -- A ].sub.s wherein A is a divalent organic radical, and s is a positive integer of at least 1.
Claim 4
Dependent Claim
78 words
The composition in accordance with claim 1(b), wherein the additive is a fire-retardant polymeric composition containing a unit of the formula: ##SPC8## wherein R is as defined hereinbefore, n is a positive integer of from about 2 to about 400, and a is a positive integer of from about 2 to about 4, and a unit of the formula: ##SPC9## wherein s is a positive integer of from about 2 to about 400 and a is defined hereinbefore.
Claim 5
Dependent Claim
30 words
A composition in accordance with claim 3(b), wherein each R is independently selected from the group consisting of primary alkyl groups containing from about 1 to about 10 carbon atoms.
Claim 6
Dependent Claim
12 words
A composition in accordance with claim 3, wherein each R is methyl.
Claim 7
Dependent Claim
44 words
A fire-retardant polymeric composition comprising: a. a normally flammable polystyrene resin, and b. a fire-retardant additive selected from halogenated monomeric and polymeric organic compounds of the formula: ##SPC10## wherein each R independently is selected from primary alkyl groups, each R 1 independently is hydrogen.
Claim 8
Dependent Claim
44 words
A fire-retardant polymeric composition comprising: a. a normally flammable polystyrene resin, and b. a fire-retardant additive selected from halogenated monomeric and polymeric organic compounds of the formula: ##SPC10## wherein each R independently is selected from primary alkyl groups, each R 1 independently is hydrogen.
Claim 9
Dependent Claim
30 words
A composition in accordance with claim 6, wherein each R is independently selected from the group consisting of primary alkyl groups containing from about 1 to about 10 carbon atoms.
Claim 10
Dependent Claim
12 words
A composition in accordance with claim 6, wherein each R is methyl.
Claim 11
Dependent Claim
38 words
A composition in accordance with claim 1(b), wherein the additive is a fire-retardant polymeric composition containing a unit of the formula: ##SPC11## wherein R is a primary alkyl group, n is a positive integer of at least 1.
Claim 12
Dependent Claim
15 words
A composition in accordance with claim 6(a), wherein the styrene resin is high impact polystyrene.
Claim 13
Dependent Claim
39 words
A composition in accordance with claim 6, comprising from about 0.5 to about 50 parts of said additive and from about 2 to about 5 parts of antimony oxide per 100 parts of said resin on a weight basis.
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) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |