US3009901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction products of phenolic diamines with isocyanate terminated polyethers
Assignee: EIDP Inc
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Filing: 1958-01-09
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Granted: 1961-11-21
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Expires: 1978-01-09
Abstract
No abstract record available.
Inventors
- 👤 August H Frazer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:46
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; Y; Y10; Y10S; Y10S264/00; Y10S264/77; Y10S528/00; Y10S528/903; Y10S528/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A SUBSTANTIALLY LINEAR POLYETHER-URETHANEUREA COPOLYMER CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF (1) AN ISOCYANATE-TERMINATED POLYETHER PREPARED BY REACTING A HYDROXYL-TERMINATED POLYETHER GLYCOL HAVING A MELTING POINT BELOW ABOUT 60%C. AND A MOLECULAR WEIGHT ABOVE ABOUT 600 WITH A MOLAR EXCESS OF AN ORGANIC DIISOCYANATE, AND (2) AN AROMATIC DIAMINE CONTAINING AT LEAST ONE PHENOLIC OH GROUP AND HAVING THE AMINE GROUPS ATTACHED TO CARBON ATOMS OF AN AROMATIC RING, SAID AROMATIC DIAMINE BEING CAPABLE OF FORMING WITH SAID ORGANIC DIISOCYANATE A UREA POLYMER HAVING A MELTING POINT ABOVE 200*C. IN THE FIBER-FORMING MOLECULAR WEIGHT RANGE.
Claim 2
Dependent Claim
96 words
A SUBSTANTIALLY LINEAR POLYETHER-URETHANEUREA COPOLYMER CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF (1) AN ISOCYANATE-TERMINATED POLYETHER PREPARED BY REACTING A HYDROXYL-TERMINATED POLYETHER GLYCOL HAVING A MELTING POINT BELOW ABOUT 60%C. AND A MOLECULAR WEIGHT ABOVE ABOUT 600 WITH A MOLAR EXCESS OF AN ORGANIC DIISOCYANATE, AND (2) AN AROMATIC DIAMINE CONTAINING AT LEAST ONE PHENOLIC OH GROUP AND HAVING THE AMINE GROUPS ATTACHED TO CARBON ATOMS OF AN AROMATIC RING, SAID AROMATIC DIAMINE BEING CAPABLE OF FORMING WITH SAID ORGANIC DIISOCYANATE A UREA POLYMER HAVING A MELTING POINT ABOVE 200*C. IN THE FIBER-FORMING MOLECULAR WEIGHT RANGE.
References Cited (Backward Citations)
BE519014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |