US3784592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated polyhydroxy-containing phosphate esters
Assignee: Great Lakes Chemical Corp
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Filing: 1971-02-25
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Granted: 1974-01-08
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Expires: 1991-02-25
Abstract
Abstract THERE IS DISCLOSED CERTAIN ESTERS OF PHOSPHORIC ACID REPSENTED BY THE FORMULA: (HO-R-C(-CH2-X)2-CH2-O-)3-P=O WHEREIN R IS A LINEAR ALIPHATIC HYDROCARBON RADICAL HAVING 1-20 CARBON ATOMS AND WHEREIN X IS BROMINE OR CHLORINE, PREFERABLY BROMINE. THE USE OF SUCH ESTERS AS REACTIVE FIRE RETARDANT AGENTS FOR POLYMERIC SYSTEMS, ESPECIALLY URETHANE FOAMS, IS SUGGESTED; AS IS THEIR USE FOR OTHER PURPOSES SUCH AS LIGHT STABILIZERS FOR SUCH SYSTEMS.
Inventors
- 👤 L Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:40
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3878; C08G18/3882; C08G18/3885; Y; Y10; Y10S; Y10S524/00; Y10S524/914
Claims Analysis
Total Claims: 0
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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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |