Patent US1708432A successfully refreshed from Google Patents.
US2631140A
Expired / Lapsed
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Modified phenolic resins
Assignee: Universal Oil Products Co
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Filing: 1951-07-19
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Granted: 1953-03-10
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Expires: 1971-07-19
Abstract
No abstract record available.
Inventors
- 👤 Herman S Bloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:51
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C08G16/00; C08G16/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS FOR THE PRODUCTION OF A RESINOUS PRODUCT WHICH COMPRISES REACTING A MIXTURE OF MONO-AND POLYALKENYL AND ALKAPOLYENYL PHENOLS WITH A CARBONYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE ALDEHYDES AND KETONES IN THE PRESENCE OF A BASIC CONDENSATION CATALYST AT A TEMPERATURE OF FROM ABOUT 25* C. TO ABOUT 200* C. AND IN THE MOLECULAR RATIO OF SAID CARBONYL COMPOUND TO SAID PHENOLS OF FROM ABOUT 0.5 TO ABOUT 2, SAID PHENOLS BEING THE CONDENSATION PRODUCT OF A HYDROXY AROMATIC COMPOUND CONTAINING AT LEAST THREE SUBSTITUTABLE NUCLEAR HYDROGEN ATOMS WITH A MIXTURE OF CYCLIC POLYOLEFINIC HYDROCARBONS HAVING CONJUGATED AND NON-CONJUGATED UNSATURATION IN THE SAME MOLECULE.
Claim 2
Dependent Claim
108 words
A PROCESS FOR THE PRODUCTION OF A RESINOUS PRODUCT WHICH COMPRISES REACTING A MIXTURE OF MONO-AND POLYALKENYL AND ALKAPOLYENYL PHENOLS WITH A CARBONYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE ALDEHYDES AND KETONES IN THE PRESENCE OF A BASIC CONDENSATION CATALYST AT A TEMPERATURE OF FROM ABOUT 25* C. TO ABOUT 200* C. AND IN THE MOLECULAR RATIO OF SAID CARBONYL COMPOUND TO SAID PHENOLS OF FROM ABOUT 0.5 TO ABOUT 2, SAID PHENOLS BEING THE CONDENSATION PRODUCT OF A HYDROXY AROMATIC COMPOUND CONTAINING AT LEAST THREE SUBSTITUTABLE NUCLEAR HYDROGEN ATOMS WITH A MIXTURE OF CYCLIC POLYOLEFINIC HYDROCARBONS HAVING CONJUGATED AND NON-CONJUGATED UNSATURATION IN THE SAME MOLECULE.
References Cited (Backward Citations)
US2570513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |