US3707586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated phosphate polyesters
Assignee: Olin Corp
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Filing: 1970-02-02
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Granted: 1972-12-26
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Expires: 1990-02-02
Abstract
Abstract HALOGENATED PHOSPHATE POLYESTERS, USEFUL AS FLAME RETARDANTS FOR POLYURETHANE FOAM, ARE DISCLOSED WHICH HAVE THE FORMULA R-(X)A-(O-P(=O)(-O-R'')2)N WHEREIN R IS AN ALIPHATIC HYDROCARBON RADICAL OF 1-8 CARBONS OR AN AROMATIC HYDROCARBON RADICAL, X IS A HALOGEN, A IS AN INTEGER OF 0-4 N IS AN INTEGER OF 2-6, AND EACH R'' IS INDEPENDENTLY A HALOALKYL RADICAL. ACCORDING TO PREFERRED EMBODIMENTS OF THE INVENTION, THESE POLYESTERS ARE REPRESENTED BY THE FORMULA (R''-O-)2-P(=O)-O-R-O-P(=O)(-O-R'')2 WHEREIN R AND R'' ARE AS INDICATED ABOVE.
Inventors
- 👤 Richard J Turley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:04
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0038; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C07F9/093; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08L; C08L75/00; C08L75/04; C08L83/00; C08L83/04; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S521/00; Y10S521/906
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |