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US4849467A
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US
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Flame retardant polymer compositions
Assignee: Bromine Compounds Ltd
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Filing: 1988-06-02
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Granted: 1989-07-18
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Expires: 2008-06-02
Abstract
Abstract The present invention relates to fire retardant polymer compositions obtained by the blending of monomeric N-tribromophenylmaleimide, as a fire retardant additive with a polymer. The preferred amount of bromine in the composition is above 0.5% by weight thereof. The polymer is selected from styrenic polymers and copolymers, polyolefine, rubbers, epoxy resins, plasticized PVC and polyurethane. If desired, one or more additional fire retardant(s) may be incorporated in the composition. Optionally, synergistic fire retardant additives such as antimony oxide, or organo-phosphorus compounds are also incorporated. The flame retardant polymer compositions have improved properties compared with those obtained with known flame retardant reagents. It was also unexpectedly found that the fire retardant additive provides to the polymer composition stability against ultraviolet light irradiation.
Inventors
- 👤 Leonard M. Shorr
- 👤 Theodor M. Fishler
- 👤 Pierre Georlette
- 👤 Michael Rumack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:52
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
44 words
A fire retardant polymer composition, containing at least one polymer selected from the group consisting of styrenic polymers and copolymers, polyolefins, epoxy resins, rubbers, plasticized PVC and polyurethanes blended with a fire retarding amount of a fire retardant additive consisting essentially of monomeric TBPMI.
Claim 2
Dependent Claim
44 words
A fire retardant polymer composition, containing at least one polymer selected from the group consisting of styrenic polymers and copolymers, polyolefins, epoxy resins, rubbers, plasticized PVC and polyurethanes blended with a fire retarding amount of a fire retardant additive consisting essentially of monomeric TBPMI.
Claim 3
Dependent Claim
20 words
Fire retardant polymer composition, according to claim 1, wherein the bromine content is above 0.5% by weight of the composition.
Claim 4
Dependent Claim
24 words
Fire retardant polymer composition according to claim 1, wherein the TBPMI is in the range of 0.85% to 50% by weight of the composition.
Claim 5
Dependent Claim
18 words
Fire retardant polymer composition according to claim 1, further comprising at least one additional fire retardant incorporated therein.
Claim 6
Dependent Claim
19 words
Fire retardant polymer composition according to claim 1, further comprising at least one synergistic fire retardant reagent incorporated therein.
Claim 7
Dependent Claim
22 words
Fire retardant polymer composition according to claim 5, wherein said synergistic fire retardant reagent is selected from organo-phosphorus compounds and antimony oxide.
Claim 8
Dependent Claim
24 words
Fire retardant polymer composition according to claim 1, wherein conventional additives selected from fillers, pigments, lubricants, smoke suppressants, plasticizers and carbon black are incorporated.
Claim 9
Dependent Claim
26 words
Fire retardant polymer composition according to claim 1, wherein the amount of TBPMI is sufficient to provide the polymer composition with stability against ultraviolet light irradiation.
Claim 10
Dependent Claim
13 words
Fire retardant polymer composition according to claim 8, wherein said polymer is polystyrene.
Claim 11
Dependent Claim
16 words
Fire retardant polymer composition according to claim 8, wherein said polymer is high impact polystyrene (HIPS).
Claim 12
Dependent Claim
13 words
Fire retardant polymer composition according to claim 8, wherein said polymer is polyethylene.
Claim 13
Dependent Claim
14 words
Fire retardant polymer composition according to claim 8, wherein said polymer is polyurethane rubber.
Claim 14
Dependent Claim
14 words
Fire retardant polymer composition according to claim 8, wherein said polymer is polyurethane foam.
Claim 15
Dependent Claim
14 words
Fire retardant polymer composition according to claim 8, wherein said polymer is ABS polymer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-07-17 | 1993-01-16 | 1993-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-17 | 1997-01-16 | 1997-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-17 | 2001-01-16 | 2001-07-18 | $7700.00 | Window Closed / Lapsed |