US2880192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubbery composition comprising a crystalline polyester and a liquid polyester reacted with a diisocyanate
Assignee: Imperial Chemical Industries Ltd
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Filing: 1955-01-10
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Granted: 1959-03-31
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Expires: 1975-01-10
Abstract
No abstract record available.
Inventors
- 👤 Coffey David Hay
- 👤 Johnson Philip Cowey
- 👤 White Henry George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:24
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4202; C08G18/4009; C08G18/60; C08G18/606; C08G2250/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A POLYMERIC MATERIAL OBTAINED BY REACTING A MIXTURE OF FROM 5 TO 30% BY WEIGHT OF AT LEAST ONE CRYSTALLINE LINEAR POLYESTER FREE FROM ETHYLENIC UNSATURATION OBTAINED BY THE ESTERIFICATION OF A DICARBOXYLIC ACID AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF GLYCOL, AND GLYCOL MIXTURES CONTAINING A SMALL PROPORTION OF AN AMINE SELECTED FROM THE GROUP CONSISTING OF HYDROXY AMINES AND DIAMINES AND FROM 95 TO 70% BY WEIGHT OF AT LEAST ONE LINEAR POLYESTER LIQUID BELOW 50*C. AND FREE FROM ETHYLENIC UNSATURATION OBTAINED BY THE ESTERIFICATION OF A DICARBOXYLIC ACID AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF GLYCOL AND GLYCOL MIXTURES CONTAINING A SMALL PROPORTION OF AN AMINE SELECTED FROM THE GROUP CONSISTING OF HYDROXY AMINES AND DIAMINES WITH AT LEAST FROM ABOUT 0.9 TO 1.2 MOLS, PER TOTAL OF ONE MOL OF SAID MIXED POLYESTERS, OF AN ORGANIC POLYISOCYANATE.
Claim 2
Dependent Claim
145 words
A POLYMERIC MATERIAL OBTAINED BY REACTING A MIXTURE OF FROM 5 TO 30% BY WEIGHT OF AT LEAST ONE CRYSTALLINE LINEAR POLYESTER FREE FROM ETHYLENIC UNSATURATION OBTAINED BY THE ESTERIFICATION OF A DICARBOXYLIC ACID AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF GLYCOL, AND GLYCOL MIXTURES CONTAINING A SMALL PROPORTION OF AN AMINE SELECTED FROM THE GROUP CONSISTING OF HYDROXY AMINES AND DIAMINES AND FROM 95 TO 70% BY WEIGHT OF AT LEAST ONE LINEAR POLYESTER LIQUID BELOW 50*C. AND FREE FROM ETHYLENIC UNSATURATION OBTAINED BY THE ESTERIFICATION OF A DICARBOXYLIC ACID AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF GLYCOL AND GLYCOL MIXTURES CONTAINING A SMALL PROPORTION OF AN AMINE SELECTED FROM THE GROUP CONSISTING OF HYDROXY AMINES AND DIAMINES WITH AT LEAST FROM ABOUT 0.9 TO 1.2 MOLS, PER TOTAL OF ONE MOL OF SAID MIXED POLYESTERS, OF AN ORGANIC POLYISOCYANATE.
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) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |