US4033927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant polyester resin compositions
Assignee: General Electric Co
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Filing: 1975-01-15
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Granted: 1977-07-05
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Expires: 1995-01-15
Abstract
Abstract Flame retardant thermoplastic molding compositions are provided comprising a normally flammable linear polyester and a pentavalent phosphorus-containing flame retardant agent. Particularly efficient phosphorus-containing agents are brominated arylphosphates, polyalkylenearyl phosphonates and triarylphosphine oxides.
Inventors
- 👤 Willem F. H. Borman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:59
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A flame retardant thermoplastic composition comprising: (a) a normally flammable high-molecular weight poly(1,4-butylene terephthalate) resin and; (b) as a flame retardant additive, the reaction product of neopentyl glycol and phenyl phosphonic dichloride, said reaction product being a single unit or being 2 to 50 repeating units of the formula; ##STR50##
Claim 2
Dependent Claim
50 words
A flame retardant thermoplastic composition comprising: (a) a normally flammable high-molecular weight poly(1,4-butylene terephthalate) resin and; (b) as a flame retardant additive, the reaction product of neopentyl glycol and phenyl phosphonic dichloride, said reaction product being a single unit or being 2 to 50 repeating units of the formula; ##STR50##
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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) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |