Patent US3833665A successfully refreshed from Google Patents.
US3833665A
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US
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Cycloaliphatic polyols
Assignee: Lyondell Chemical Technology LP
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Filing: 1971-08-16
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Granted: 1974-09-03
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Expires: 1991-08-16
Abstract
Abstract OXYALKYLATED DERIVATIVES OF A 3 - CYCLOHEXANE-1,1-DIMETHANOL AND A 3,4-DIBROMOCYCLOHEXANE-1,1-DIMETHANOL ARE PROVIDED WHICH ARE USEFUL POLYOLS IN THE MANUFACTURE OF POLYMERIC COMPOSITIONS INCLUDING POLYURETHANES. ALSO PROVIDED ARE POLYMERIC COMPOSITIONS TO WHICH FLAME-RETARDANT PROPERTIES HAVE BEEN IMPARTED BY THE INCORPORATION THEREIN OF A 3,4-DIBROMOCYCLOHEXANE-1,1-DIMETHANOL, AN OXYALKYLATED 3,4-DIBROMOCYCLOHEXANE-1,1-DIMETHANOL, OR A COMBINATION THEREOF. THE DIBROMO-CYCLOALIPHATIC DIOLS OF THE INVENTION ARE ESPECIALLY USEFUL IN THE FORMATION OF FLAME-RETARDED POLYURETHANES INCLUDING CELLULAR POLYURETHANES AND, IN PARTICULAR, FLEXIBLE FOAMS.
Inventors
- 👤 A Papa
- 👤 W Proops
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:37
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3802; C08G18/3804; C08G18/3806; C08G18/381; C08G18/40; C08G18/48; C08G18/50; C08G18/5003; C08G18/5006; C08G18/5012
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |