US2956031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highly cross-linked non-flammable polyurethane compositions and preparation of same
Assignee: Honeywell International Inc
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Filing: 1958-04-04
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Granted: 1960-10-11
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Expires: 1978-04-04
Abstract
No abstract record available.
Inventors
- 👤 Khawam Antoine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:27
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6603; C08G18/6614; C08G18/6622; C08G18/30; C08G18/32; C08G18/3271; C08G18/3278; C08G18/3281; C08G18/36; C08G18/40; C08G18/4009; C08K; C08K5/00; C08K5/49; C08K5/51
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A METHOD OF PRODUCING HIGHLY CROSS-LINKED CELLULAR POLYRETHANE COMPOSITION WHICH COMPRISES REACTING BY SIMULTANEOUSLY MIXING A POLYOL SELECTED FROM THE GROUP CONSISTING OF AN ESTERIFICATION PRODUCT OF A DICARBOXYLIC ACID AND A POLYHYDRIC ALCOHOL, A FATTY ACID GLYCERIDE HAVING A HYDROXYL NUMBER OF AT LEAST 50 AND A POLYALKYLENE ETHER GLYCOL HAVING A MOLECULAR WEIGHT OF AT LEAST 200, AN ORGANIC POLYISOCYANATE AND A DIAMINE TRIHYDROXY COMPOUND HAVING THE FORMULA:
Claim 2
Independent Claim
70 words
A METHOD OF PRODUCING HIGHLY CROSS-LINKED CELLULAR POLYRETHANE COMPOSITION WHICH COMPRISES REACTING BY SIMULTANEOUSLY MIXING A POLYOL SELECTED FROM THE GROUP CONSISTING OF AN ESTERIFICATION PRODUCT OF A DICARBOXYLIC ACID AND A POLYHYDRIC ALCOHOL, A FATTY ACID GLYCERIDE HAVING A HYDROXYL NUMBER OF AT LEAST 50 AND A POLYALKYLENE ETHER GLYCOL HAVING A MOLECULAR WEIGHT OF AT LEAST 200, AN ORGANIC POLYISOCYANATE AND A DIAMINE TRIHYDROXY COMPOUND HAVING THE FORMULA:
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) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |