Patent US2908664A successfully refreshed from Google Patents.
US2908664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified epoxide resins
Assignee: Celanese Coatings Co
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Filing: 1956-06-11
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Granted: 1959-10-13
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Expires: 1976-06-11
Abstract
No abstract record available.
Inventors
- 👤 William J Belanger
- 👤 John E Masters
- 👤 Darrell D Hicks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:49
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4284; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1444; C08G59/1455; C08G59/20; C08G59/22; C08G59/24; C08G59/245; C08L; C08L63/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A PROCESS FOR PREPARING A RESIN WHICH COMPRISES HEATING A REACTING A GLYCIDYL POLYETHER OF A POLYHYDRIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYHYDRIC PHENOLS AND POLYHYDRIC ALCOHOLS, SAID POLYETHER CONTAINING MORE THAN ONE EPOXIDE GROUP PER MOLECULE AND HAVING A WEIGHT PER EPOXIDE BELOW 1000, A POLYCARBOXYLIC ACID ANHYDRIDE AND A MONOHYDRIC PHENOL IN A RATIO OF TWO EPOXIDE EQUIVALENTS OF GLYCIDYL POLYETHER TO FROM 0.1 TO 0.8 MOL OF MONOHYDRIC PHENOL TO FROM 1.9 TO 1.2 EQUIVALENTS OF POLYCARBOXYLIC ACID ANHYDRIDE, CONSIDERING AN EPOXIDE EQUIVALENT AS THE WEIGHT IN GRAMS OF GLYCIDYL POLYETHER PER EPOXIDE GROUP, AND AN ANHYDRIDE EQUIVALENT AS THE WEIGHT OF ACID ANHYDRIDE IN GRAMS PER ANHYDRIDE GROUP.
Claim 2
Dependent Claim
114 words
A PROCESS FOR PREPARING A RESIN WHICH COMPRISES HEATING A REACTING A GLYCIDYL POLYETHER OF A POLYHYDRIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYHYDRIC PHENOLS AND POLYHYDRIC ALCOHOLS, SAID POLYETHER CONTAINING MORE THAN ONE EPOXIDE GROUP PER MOLECULE AND HAVING A WEIGHT PER EPOXIDE BELOW 1000, A POLYCARBOXYLIC ACID ANHYDRIDE AND A MONOHYDRIC PHENOL IN A RATIO OF TWO EPOXIDE EQUIVALENTS OF GLYCIDYL POLYETHER TO FROM 0.1 TO 0.8 MOL OF MONOHYDRIC PHENOL TO FROM 1.9 TO 1.2 EQUIVALENTS OF POLYCARBOXYLIC ACID ANHYDRIDE, CONSIDERING AN EPOXIDE EQUIVALENT AS THE WEIGHT IN GRAMS OF GLYCIDYL POLYETHER PER EPOXIDE GROUP, AND AN ANHYDRIDE EQUIVALENT AS THE WEIGHT OF ACID ANHYDRIDE IN GRAMS PER ANHYDRIDE GROUP.
Claim 3
Dependent Claim
170 words
A PROCESS FOR PREPARING A RESINOUS COMPOSITION WHICH COMPRISES CONDENSING A POLYCARBOXYLIC ACID ANHYDRIDE AND A GLYCIDYL POLYETHER OF A POLYHYDRIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYHYDRICPHENOLS AND POLYHYDRIC ALCOHOLS, SAID POLYETHER CONTAINING MORE THAN ONE EPOXIDE GROUP PER MOLECULE AND HAVING A WEIGHT PER EPOXIDE BELOW 1000, WITH THE PRODUCT RESULTING FROM THE REACTION OF ONE MOL OF A MONOHYDRIC PHENOL WITH TWO EPOXIDE EQUIVALENTS OF GLYCIDYL POLYETHER OF A POLYHYDRIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYHYDRIC PHENOLS AND POLYHYDRIC ALCOHOLS AND ALSO CONTAINING MORE THAN ONE EPOXIDE GROUP PER MOLECULE AND HAVING A WEIGHT PER EPOXIDE BELOW 1000, THE REACTANTS BEING PRESENT IN THE RESINOUS COMPOSITION IN A RATIO OF TWO EPOXIDE EQUIVALENTS OF GLYCIDYL POLYETHER TO FROM 0.1 TO 0.8 MOL MONOHYDRIC PHENOL TO FROM 1.9 TO 1.2 EQUIVALENTS OF POLYCARBOXYLIC ACID ANHYDRIDE, CONSIDERING AN EPOXIDE EQUIVALENT AS THE WEIGHT IN GRAMS OF GLYCIDYL POLYETHER PER EPOXIDE GROUP, AND AN ANHYDRIDE EQUIVALENT AS THE WEIGHT OF ACID ANHYDRIDE IN GRAMS PER ANHDYDRIDE GROUP.
Claim 4
Dependent Claim
170 words
A PROCESS FOR PREPARING A RESINOUS COMPOSITION WHICH COMPRISES CONDENSING A POLYCARBOXYLIC ACID ANHYDRIDE AND A GLYCIDYL POLYETHER OF A POLYHYDRIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYHYDRICPHENOLS AND POLYHYDRIC ALCOHOLS, SAID POLYETHER CONTAINING MORE THAN ONE EPOXIDE GROUP PER MOLECULE AND HAVING A WEIGHT PER EPOXIDE BELOW 1000, WITH THE PRODUCT RESULTING FROM THE REACTION OF ONE MOL OF A MONOHYDRIC PHENOL WITH TWO EPOXIDE EQUIVALENTS OF GLYCIDYL POLYETHER OF A POLYHYDRIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYHYDRIC PHENOLS AND POLYHYDRIC ALCOHOLS AND ALSO CONTAINING MORE THAN ONE EPOXIDE GROUP PER MOLECULE AND HAVING A WEIGHT PER EPOXIDE BELOW 1000, THE REACTANTS BEING PRESENT IN THE RESINOUS COMPOSITION IN A RATIO OF TWO EPOXIDE EQUIVALENTS OF GLYCIDYL POLYETHER TO FROM 0.1 TO 0.8 MOL MONOHYDRIC PHENOL TO FROM 1.9 TO 1.2 EQUIVALENTS OF POLYCARBOXYLIC ACID ANHYDRIDE, CONSIDERING AN EPOXIDE EQUIVALENT AS THE WEIGHT IN GRAMS OF GLYCIDYL POLYETHER PER EPOXIDE GROUP, AND AN ANHYDRIDE EQUIVALENT AS THE WEIGHT OF ACID ANHYDRIDE IN GRAMS PER ANHDYDRIDE GROUP.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |