US2947714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of resins from diisocyanates
Assignee: UCB SA
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Filing: 1957-06-04
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Granted: 1960-08-02
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Expires: 1977-06-04
Abstract
No abstract record available.
Inventors
- 👤 Leclercq Rene
- 👤 Paquet Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:29
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/671; C08G18/674; C08G18/2805; C08G18/2815
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS FOR THE PREPARATION OF DIISOCYANATE RESINS WHICH COMPRISES REACTING AT A TEMPERATURE BETWEEN 100 AND 300* C. AND IN THE PRESENCE OF AN INERT GAS, MATERIALS CONSISTING ESSENTIALLY OF AT LEAST ONE DIISOCYANATE OF THE GENERAL FORMULA OCN-R-NCO WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AND AROMATIC BIVALENT RADICALS WITH A MIXTURE OF AT LEAST TWO MONOHYDROXYLATED COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF ALLY, BENZYL, FURFURYL AND ABIETYL ALCOHOLS, PHENOL AND NONYLPHENOL, THE MOLECULAR RATIO OF THE DIISOCYANATE TO THE MONOHYDROXYLATED COMPOUNDS USED BEING ABOUT 1:1.
Claim 2
Dependent Claim
92 words
A PROCESS FOR THE PREPARATION OF DIISOCYANATE RESINS WHICH COMPRISES REACTING AT A TEMPERATURE BETWEEN 100 AND 300* C. AND IN THE PRESENCE OF AN INERT GAS, MATERIALS CONSISTING ESSENTIALLY OF AT LEAST ONE DIISOCYANATE OF THE GENERAL FORMULA OCN-R-NCO WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AND AROMATIC BIVALENT RADICALS WITH A MIXTURE OF AT LEAST TWO MONOHYDROXYLATED COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF ALLY, BENZYL, FURFURYL AND ABIETYL ALCOHOLS, PHENOL AND NONYLPHENOL, THE MOLECULAR RATIO OF THE DIISOCYANATE TO THE MONOHYDROXYLATED COMPOUNDS USED BEING ABOUT 1:1.
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) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |