US2934506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified epoxide resins
Assignee: Celanese Coatings Co
•
Filing: 1956-06-11
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Granted: 1960-04-26
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Expires: 1976-06-11
Abstract
No abstract record available.
Inventors
- 👤 Darrell D Hicks
- 👤 John E Masters
- 👤 William J Belanger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:13
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4292
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A PROCESS FOR PREPARING A CROSS-LINKED, INSOLUBLE, INFUSIBLE RESINOUS COMPOSITION WHICH COMPRISES REACTING AT A TEMPERATURE OF 80*C. TO 180*C. (A) A GLYCIDYL POLYETHER CONTAINING MORE THAN ONE EPOXIDE GROUP PER MOLECULE AND HAVING A WEIGHT PER EPOXIDE BELOW 1000, (B) AN ALIPHATIC MONOCARBOXYLIC ACID HAVING AT LEAST EIGHT CARBON ATOMS, AND (C) POLYCARBOXYLIC ACID ANHYDRIDE, IN A RATIO OF 2 EPOXIDE EQUIVALENTS OF GLYCIDYL POLYETHER TO 0.1 TO 0.8 EQUIVALENT OF MONOCARBOXYLIC ACID TO 1.9 TO 1.2. EQUIVALENTS OF POLYCARBOXYLIC ACID ANHYDRIDE WHEREIN THE EQUIVALENTS OF MONOCARBOXYLIC ACID PLUS EQUIVALENTS OF POLYCARBOXYLIC ACID ANHYDRIDE DO NOT EXCEED TWO SO THAT THERE ARE NO CARBOXYL GROUPS IN EXCESS OF EPOXIDE GROUPS AND THEREBY CAUSING, AT THE TEMPERATURE EMPLOYED, CARBOXYL GROUPS TO REACT PREFERENTIALLY WITH EPOXIDE GROUPS.
Claim 2
Dependent Claim
126 words
A PROCESS FOR PREPARING A CROSS-LINKED, INSOLUBLE, INFUSIBLE RESINOUS COMPOSITION WHICH COMPRISES REACTING AT A TEMPERATURE OF 80*C. TO 180*C. (A) A GLYCIDYL POLYETHER CONTAINING MORE THAN ONE EPOXIDE GROUP PER MOLECULE AND HAVING A WEIGHT PER EPOXIDE BELOW 1000, (B) AN ALIPHATIC MONOCARBOXYLIC ACID HAVING AT LEAST EIGHT CARBON ATOMS, AND (C) POLYCARBOXYLIC ACID ANHYDRIDE, IN A RATIO OF 2 EPOXIDE EQUIVALENTS OF GLYCIDYL POLYETHER TO 0.1 TO 0.8 EQUIVALENT OF MONOCARBOXYLIC ACID TO 1.9 TO 1.2. EQUIVALENTS OF POLYCARBOXYLIC ACID ANHYDRIDE WHEREIN THE EQUIVALENTS OF MONOCARBOXYLIC ACID PLUS EQUIVALENTS OF POLYCARBOXYLIC ACID ANHYDRIDE DO NOT EXCEED TWO SO THAT THERE ARE NO CARBOXYL GROUPS IN EXCESS OF EPOXIDE GROUPS AND THEREBY CAUSING, AT THE TEMPERATURE EMPLOYED, CARBOXYL GROUPS TO REACT PREFERENTIALLY WITH EPOXIDE GROUPS.
References Cited (Backward Citations)
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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) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |