US2928809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxide resin-quaternary ammonium salt compositions
Assignee: Celanese Coatings Co
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Filing: 1957-08-12
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Granted: 1960-03-15
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Expires: 1977-08-12
Abstract
No abstract record available.
Inventors
- 👤 Darrell D Hicks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:44
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A HEAT CURABLE COMPOSITION COMPRISING AN EPOXIDE RESIN OF THE GROUP CONSISTING OF GLYCIDYL POLYETHERS OF POLYHYDRIC PHENOLS, GLYCIDYL POLYETHERS OF POLYHYDRIC ALCOHOLS AND EPOXY ALICYCLIC ESTERS, SAID EPOXIDE RESINS HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN ONE AND AN EPOXIDE EQUIVALENT OF FROM 140 TO 4000, AND FROM 0.1 TO 10 PERCENT OF A QUATERNARY AMMONIUM SALT SELECTED FROM THE GROUP CONSISTING OF TETRAALKYL, ARYL TRIAKYL, AND ALKARYL TRIALKYL AMMONIUM SALTS OF ORGANIC ACIDS HAVING PK VALUES OF 1 TO 5 WHEREIN THE ARYL, ALKARYL AND ALKYL SUBSTITUENTS EACH HAVE NO MORE THAN EIGHT CARBON ATOMS, CONSIDERING AN EPOXIDE EQUIVALENT AS THE WEIGHT OF THE EPOXIDE RESIN IN GRAMS PER EPOXIDE GROUP.
Claim 2
Dependent Claim
112 words
A HEAT CURABLE COMPOSITION COMPRISING AN EPOXIDE RESIN OF THE GROUP CONSISTING OF GLYCIDYL POLYETHERS OF POLYHYDRIC PHENOLS, GLYCIDYL POLYETHERS OF POLYHYDRIC ALCOHOLS AND EPOXY ALICYCLIC ESTERS, SAID EPOXIDE RESINS HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN ONE AND AN EPOXIDE EQUIVALENT OF FROM 140 TO 4000, AND FROM 0.1 TO 10 PERCENT OF A QUATERNARY AMMONIUM SALT SELECTED FROM THE GROUP CONSISTING OF TETRAALKYL, ARYL TRIAKYL, AND ALKARYL TRIALKYL AMMONIUM SALTS OF ORGANIC ACIDS HAVING PK VALUES OF 1 TO 5 WHEREIN THE ARYL, ALKARYL AND ALKYL SUBSTITUENTS EACH HAVE NO MORE THAN EIGHT CARBON ATOMS, CONSIDERING AN EPOXIDE EQUIVALENT AS THE WEIGHT OF THE EPOXIDE RESIN IN GRAMS PER EPOXIDE GROUP.
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 |