US2926157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous products from furfuryl alcohol and diisocyanates
Assignee: UCB SA
•
Filing: 1956-12-13
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Granted: 1960-02-23
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Expires: 1976-12-13
Abstract
No abstract record available.
Inventors
- 👤 Leclercq Rene
- 👤 Paquet Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:30
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/2815; C08G18/67; C08G18/671; C08G18/674; Y; Y10; Y10S; Y10S528/00; Y10S528/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR PREPARING RESINS WHICH CONSISTS ESSENTIALLY OF MIXING AT ROOM TEMPERATURE FURFURYL ALCOHOL WITH AT MOST TWO DIISOCYANATES SELCTED FROM THE GROUP CONSISTING OF HEXAMETHYLENE DIISOCYANATE, METHYLENE BIS(4-PHENYLISOCYANATE), TOLUENE 2,4-DIISOCYANATE, AND 3,3''DIMETHOXY-4,4''-DIPHENYLENE DIISOCYANATE, FROM 1 TO 5 MOLES OF FURFURYL ALCOHOL BEING ADDED TO THE MIXTURE FOR EACH MOLE OF DIISOCYANATE, SAID MIXTURE RESULTING IN A REACTION, AND COMPLETING SAID REACTION BY HEATING THE MIXTURE TO A TEMPERATURE OF FROM 140* TO 220*C.
Claim 2
Dependent Claim
75 words
A PROCESS FOR PREPARING RESINS WHICH CONSISTS ESSENTIALLY OF MIXING AT ROOM TEMPERATURE FURFURYL ALCOHOL WITH AT MOST TWO DIISOCYANATES SELCTED FROM THE GROUP CONSISTING OF HEXAMETHYLENE DIISOCYANATE, METHYLENE BIS(4-PHENYLISOCYANATE), TOLUENE 2,4-DIISOCYANATE, AND 3,3''DIMETHOXY-4,4''-DIPHENYLENE DIISOCYANATE, FROM 1 TO 5 MOLES OF FURFURYL ALCOHOL BEING ADDED TO THE MIXTURE FOR EACH MOLE OF DIISOCYANATE, SAID MIXTURE RESULTING IN A REACTION, AND COMPLETING SAID REACTION BY HEATING THE MIXTURE TO A TEMPERATURE OF FROM 140* TO 220*C.
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) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |