US3763111A
Expired / Lapsed
US
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Polyurethane products produced from a sucrose ethylene diamine co initiated polyether polyol
Assignee: BASF Corp
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Filing: 1971-05-06
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Granted: 1973-10-02
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Expires: 1991-05-06
Abstract
Abstract A SUCROSE-ETHYLENE DIAMINE POLYOL IS PREPARED BY REACTING A MIXTURE OF SUCROSE AND ETHYLENE DIAMINE WITH AN ALKYLENE OXIDE IN THE PRESSENCE OF A CAUSTIC CATALYST. THE POLYOL IS USED TO PREPARED POLYURETHANE FOAM PRODUCTS HAVING EXCELLENT DIMENSIONAL STABILITY AND PHYSICAL PROPERTIES. THE POLYURETHANE FOAMS ARE USED IN PREPARING MOLDED ARTICLES AND AS INSULATION FOR REFIGERATORS, FREEZERS, AND THE LIKE.
Inventors
- 👤 W Fijal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:37
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/02; C07H15/04; C07H15/08; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/487; C08G18/4883; C08G18/50; C08G18/5021; C08G2110/00; C08G2110/0025; C08G2110/0041
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |