US3011997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane terpolymer comprising the reaction product of an arylene dhsocyanate, apolyalkylene ether glycol and a dihydroxy diphenyl monosulfone, and method of preparing same
Assignee: Solutia Inc
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Filing: 1958-09-10
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Granted: 1961-12-05
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Expires: 1978-09-10
Abstract
No abstract record available.
Inventors
- 👤 Witt Hobson D De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:08
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3855; C08G18/3863; C08G18/3865; C08G18/3872; C08G18/65; C08G18/66; C08G18/6666; Y; Y10; Y10S; Y10S55/00; Y10S55/28; Y10S8/00; Y10S8/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD OF PRODUCING A FIBER-FORMING POLYURETHANE TERPOLYMER COMPRISING REACTING TOGETHER A MIXTURE OF (A) AN ARYLENE DIISOCYANATE, (B) A POLYALKYLENE ETHER GLYCOL HAVING A MOLECULAR WEIGHT IN THE RANGE OF 106 TO 6000, AND (C) A DIHYDROXYDIPHENYL MONOSULFONE BY HEATING THE MIXTURE UNTIL A VISCOUS MOLTEN MASS IS OBTAINED FROM WHICH COLD-DRAWABLE FIBERS MAY BE FORMED, SAID GLYCOL BEING PRESENT IN A QUANTITY OF BETWEEN 0.1 AND 0.9 MOL PER MOL OF SAID DIISOCYANATE AND SAID SULFONE BEING PRESENT IN A QUANTITY OF BETWEEN 0.9 AND 0.1 MOL PER MOL OF SAID DIISOCYANATE.
Claim 2
Independent Claim
94 words
A METHOD OF PRODUCING A FIBER-FORMING POLYURETHANE TERPOLYMER COMPRISING REACTING TOGETHER A MIXTURE OF (A) AN ARYLENE DIISOCYANATE, (B) A POLYALKYLENE ETHER GLYCOL HAVING A MOLECULAR WEIGHT IN THE RANGE OF 106 TO 6000, AND (C) A DIHYDROXYDIPHENYL MONOSULFONE BY HEATING THE MIXTURE UNTIL A VISCOUS MOLTEN MASS IS OBTAINED FROM WHICH COLD-DRAWABLE FIBERS MAY BE FORMED, SAID GLYCOL BEING PRESENT IN A QUANTITY OF BETWEEN 0.1 AND 0.9 MOL PER MOL OF SAID DIISOCYANATE AND SAID SULFONE BEING PRESENT IN A QUANTITY OF BETWEEN 0.9 AND 0.1 MOL PER MOL OF SAID DIISOCYANATE.
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) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |