Patent US2928810A successfully refreshed from Google Patents.
US2928810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aliphatic alcohol-epoxide resin compositions
Assignee: Celanese Coatings Co
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Filing: 1957-11-15
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Granted: 1960-03-15
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Expires: 1977-11-15
Abstract
No abstract record available.
Inventors
- 👤 William J Belanger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:36
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/68; C08G59/686
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN THE PROCESS FOR RESINIFYING AND CURING A GLYCIDYL POLYETHER OF A POLYHYDRIC COMPOUND OF THE GROUP CONSISTING OF POLYHYDRIC PHENOLS AND POLYHYDRIC ALCHOLS, SAID GLYCIDYL POLYETHER HAVING AN EPOXY EQUIVALENCY GREATER THAN ONE, WHEREIN THE GLYCIDYL POLYETHER IS MIXED AND HEAT REACTED WITH A POLYHDRIC NALIPHATIC ALCHOL CONTAINING ONLY CARBON, HYDROGEN AND OXYGEN AND SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDRICARBONS SUBSTITUTED ONLY BY HYDROXYL GROUPS, POLYGLYCOLS, POLYGLYCEROLS AND POLYPENTAERYTRHRITOLS, SAID POLYDRIC ALCHOLS HAVING AT LEAST TWO PRIMARY ALCHOLIC HYDROXYL GROUPS, THE IMPROVEMENT WHICH COMPRISES HEAT REACTING THE GLYCIDYL POLYETHER AND THE POLYHDRIC ALCHOL AND ADDING AS AN ACCLERATOR FOR THE REACTION 0.1 TO 10 PERCENT, BASED ON THE POLYETHER-ALCHOL MIXTURE, OF AN ACTIVATOR CONSISTING OF A QUATERNARY AMMONIUM SALT SELECTED FROM THE GROUP CONSISTING OF TETRA-AKYL, ARYL TRIALKYL AND ALKARYL TRIALKYL AMMONIUM SALTS OF STRONG ACIDS WHEREIN THE ARYL, ALKARYL AND ALKYL SUBSTITUENTS HAVE NO MORE THAN EIGHT CARBON ATOMS.
Claim 2
Dependent Claim
153 words
IN THE PROCESS FOR RESINIFYING AND CURING A GLYCIDYL POLYETHER OF A POLYHYDRIC COMPOUND OF THE GROUP CONSISTING OF POLYHYDRIC PHENOLS AND POLYHYDRIC ALCHOLS, SAID GLYCIDYL POLYETHER HAVING AN EPOXY EQUIVALENCY GREATER THAN ONE, WHEREIN THE GLYCIDYL POLYETHER IS MIXED AND HEAT REACTED WITH A POLYHDRIC NALIPHATIC ALCHOL CONTAINING ONLY CARBON, HYDROGEN AND OXYGEN AND SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDRICARBONS SUBSTITUTED ONLY BY HYDROXYL GROUPS, POLYGLYCOLS, POLYGLYCEROLS AND POLYPENTAERYTRHRITOLS, SAID POLYDRIC ALCHOLS HAVING AT LEAST TWO PRIMARY ALCHOLIC HYDROXYL GROUPS, THE IMPROVEMENT WHICH COMPRISES HEAT REACTING THE GLYCIDYL POLYETHER AND THE POLYHDRIC ALCHOL AND ADDING AS AN ACCLERATOR FOR THE REACTION 0.1 TO 10 PERCENT, BASED ON THE POLYETHER-ALCHOL MIXTURE, OF AN ACTIVATOR CONSISTING OF A QUATERNARY AMMONIUM SALT SELECTED FROM THE GROUP CONSISTING OF TETRA-AKYL, ARYL TRIALKYL AND ALKARYL TRIALKYL AMMONIUM SALTS OF STRONG ACIDS WHEREIN THE ARYL, ALKARYL AND ALKYL SUBSTITUENTS HAVE NO MORE THAN EIGHT CARBON ATOMS.
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) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |