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US3192187A
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Preparation of stretchable polyurethane castings using a cocatalyst system of an epoxy alkane and a bicyclic amine
Assignee: Air Products and Chemicals Inc
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Filing: 1961-12-28
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Granted: 1965-06-29
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Expires: 1981-12-28
Abstract
No abstract record available.
Inventors
- 👤 Burton D Beitchman
- 👤 William E Erner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:40
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0201; B01J31/0234; B01J31/0235; B01J31/0237; B01J31/06; B01J31/068; C; C08; C08G; C08G18/00; C08G18/02; C08G18/022; C08G18/06; C08G18/08; C08G18/16; C08G18/161; C08G18/166; C08G18/168; C08G18/18; C08G18/20; C08G18/2045; C08G18/2063; C08G2115/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
THE METHOD OF PREPARING A NONPOROUS, SOLID STRETCHABLE ARTICLE WHICH CONSISTIS ESSENTIALLY OF THE STEPS OF: PREPARING A REACTIVE MIXTURE CONSISTING ESSENTIALLY OF AT LEAST ONE POLYALKYLENEETHERGLYCOL HAVING A MOLECULAR WEIGHT WITHIN THE RANGE FRM 400 TO 4000, AN ORGANIC DIISOCYANATE, AND A COCATALYST CONSISTING OF EPOXY ALKANE HAVING FROM 2 TO 5 CARBON ATOMS, TOGETHER WITH AN AMINE COMPOUND OF THE FORMULA
Claim 2
Independent Claim
63 words
THE METHOD OF PREPARING A NONPOROUS, SOLID STRETCHABLE ARTICLE WHICH CONSISTIS ESSENTIALLY OF THE STEPS OF: PREPARING A REACTIVE MIXTURE CONSISTING ESSENTIALLY OF AT LEAST ONE POLYALKYLENEETHERGLYCOL HAVING A MOLECULAR WEIGHT WITHIN THE RANGE FRM 400 TO 4000, AN ORGANIC DIISOCYANATE, AND A COCATALYST CONSISTING OF EPOXY ALKANE HAVING FROM 2 TO 5 CARBON ATOMS, TOGETHER WITH AN AMINE COMPOUND OF 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) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |