US3767732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyols containing halogen and phosphorus and process for making them
Assignee: Knapsack AG
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Filing: 1971-07-15
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Granted: 1973-10-23
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Expires: 1991-07-15
Abstract
Abstract THE INVENTION PROVIDES PHOSPHORUS AND HALOGEN-CONTAINING POLYOLS OF GENERAL FORMULA I R1-O-P(=OA)(-O-R1)-R2-O-(P(=OA)(-O-R1)-R2-O)N-P(=OA)(-OR1)- O-R1 IN WHICH A STANDS FOR 1 OR 0 AND 1, N STANDS FOR A NUMBER BETWEEN 0 AND 4, R1 STANDS FOR AT LEAST ONE HALOGENATED HYDROCARBON RADICAL AND AT LEAST ONE HYDROXYLATED RADICAL OF GENERAL FORMULA II -(CH(-R3)-CH(-R4)-O)M-H AND R2 STANDS FOR A RADICAL OF GENERAL FORMULA III -(O-CH(-R3)-CH(-R4))M- THE SUBSTITUENTS R3 AND R4, RESPECTIVELY, IN FORMULAE II AND III STANDING FOR A HYDROGEN ATOM OR A HYDROCARBON RADICAL HAVING FROM 1 TO 6 CARBON ATOMS AND BEING HALOGEN-SUBSTITUTED, IF DESIRED, AND M STANDS FOR A NUMBER BETWEEN 1 AND 10.
Inventors
- 👤 W Klose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:46
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; C07F9/093; C07F9/141; C08G; C08G79/00; C08G79/02; C08G79/04
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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |