US2962455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular polyurethane resins and preparation of same
Assignee: Union Carbide Corp
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Filing: 1957-04-18
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Granted: 1960-11-29
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Expires: 1977-04-18
Abstract
No abstract record available.
Inventors
- 👤 Hostettler Fritz
- 👤 Robert W Mclaughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:03
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4266; C08G18/4269; C08G2110/00; C08G2110/0008; C08G2110/0016; C08G2110/0025; C08G2110/0041; C08G2110/0083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
METHOD FOR PREPARING A FOAMED POLYMER WHICH COMPRISES REACTING (1) OXYALKYLENE-CARBONYLOXY-ALKYLENES PREPARED BY REACTING (A) A POLYFUNCTIONAL FOCAL COMPOUND OF THE GROUP COMSISTING OF WATER, HYDROGEN SULFIDE AND A COMPOUND HAVING AT LEAST TWO REACTIVE HYDROGENS IN RADICALS OF THE CLASS CONSISTING OF HYDROXYL, AMINO AND CARBOXY GROUPS AND COMBINATIONS THEREOF WITH (B) A LACTONE CONTAINING FROM FOUR TO EIGHT CARBON ATOMS IN THE RING, (C) AN EPOXIDE HAVING AN EPOXY OXYGEN LINKED TO VICINAL CARBON ATOMS WITH (2) A 100 TO 700% MOLAR EXCESS OF ORGANIC POLYISOCYANATE AND (3) WATER FOR EXTENDING THE OXYALKYLENE-CARBONYLOXYALKYLENES, EXTENSIVELY CROSS LINKING THE EXTENDED OXYALKYLENE-CARBONYLOXYALYLENES AND FORMING A FOAM.
Claim 2
Dependent Claim
105 words
METHOD FOR PREPARING A FOAMED POLYMER WHICH COMPRISES REACTING (1) OXYALKYLENE-CARBONYLOXY-ALKYLENES PREPARED BY REACTING (A) A POLYFUNCTIONAL FOCAL COMPOUND OF THE GROUP COMSISTING OF WATER, HYDROGEN SULFIDE AND A COMPOUND HAVING AT LEAST TWO REACTIVE HYDROGENS IN RADICALS OF THE CLASS CONSISTING OF HYDROXYL, AMINO AND CARBOXY GROUPS AND COMBINATIONS THEREOF WITH (B) A LACTONE CONTAINING FROM FOUR TO EIGHT CARBON ATOMS IN THE RING, (C) AN EPOXIDE HAVING AN EPOXY OXYGEN LINKED TO VICINAL CARBON ATOMS WITH (2) A 100 TO 700% MOLAR EXCESS OF ORGANIC POLYISOCYANATE AND (3) WATER FOR EXTENDING THE OXYALKYLENE-CARBONYLOXYALKYLENES, EXTENSIVELY CROSS LINKING THE EXTENDED OXYALKYLENE-CARBONYLOXYALYLENES AND FORMING A FOAM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |