US3956233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-flamable elastomeric fiber from a fluorinated elastomer and containing an halogenated flame retardant
Assignee: Honeywell International Inc
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Filing: 1973-06-28
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Granted: 1976-05-11
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Expires: 1993-06-28
Abstract
Abstract Flame retardant elastomeric compositions comprised of either spandex type polyurethane having incorporated into the polymer chain halogen containing polyols, conventional spandex type polyurethanes in physical admixture with flame retardant additives or fluoroelastomeric resins in physical admixture with flame retardant additives, methods of preparing fibers of the flame retardant elastomeric materials and articles of manufacture comprised of the flame retardant elastomeric materials and non-elastic materials such as polybenzimidazoles, fiberglass, nylons, etc.
Inventors
- 👤 with respect to an invention of Fletcher James C. Administrator of the National Aeronautics and Space Administration
- 👤 John T. Howarth
- 👤 Suresh Sheth
- 👤 Kenneth R. Sidman
- 👤 Arthur A. Massucco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:35
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/02; C08K5/03; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/46; C08G18/4607; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/04; C08K5/06; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C08L; C08L27/00; C08L27/02; C08L27/12; C08L75/00; C08L75/04; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
73 words
A flame retardant elastomeric composition suitable for forming into fibers comprising a fluorinated elastomer selected from the group consisting of polyvinylfluoride, polyvinylidenefluoride, copolymer of vinyldiene fluoride and hexafluoropropylene and mixtures thereof and a flame retardant comprising a brominated organic compound selected from the group consisting of hexabromobenzene, decarbromodiphenyl and mixtures thereof, said flame retardant being present in an amount sufficient to render said compositions substantially nonflammable in environments containing up to 70% oxygen.
Claim 2
Dependent Claim
73 words
A flame retardant elastomeric composition suitable for forming into fibers comprising a fluorinated elastomer selected from the group consisting of polyvinylfluoride, polyvinylidenefluoride, copolymer of vinyldiene fluoride and hexafluoropropylene and mixtures thereof and a flame retardant comprising a brominated organic compound selected from the group consisting of hexabromobenzene, decarbromodiphenyl and mixtures thereof, said flame retardant being present in an amount sufficient to render said compositions substantially nonflammable in environments containing up to 70% oxygen.
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein said fluorinated elastomer is present in an amount of from about 15 to about 65% by weight.
Claim 4
Dependent Claim
25 words
The composition of claim 1 including a curing agent selected from the class consisting of N,N' - dicinnanylidene-1-6-hexane diamine, hexamethylenediamine carbamate and malemide N-(-4-carboxyphenol) malemide.
Claim 5
Dependent Claim
14 words
The composition of claim 3 wherein said curing agent further includes a metal oxide.
Claim 6
Dependent Claim
17 words
The composition of claim 1 wherein said fluorocarbon resin comprises a copolymer of vinylidine fluoride and hexafluoropropylene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |