US3222312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lactone modified epoxide resins
Assignee: Celanese Corp
•
Filing: 1960-04-29
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Granted: 1965-12-07
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Expires: 1980-04-29
Abstract
No abstract record available.
Inventors
- 👤 John W Wyart
- 👤 Schrage Albert
- 👤 Joseph A Vona
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:25
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/625
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A COMPOSITION COMPRISING AN EPOXIDE RESIN CONTAINING UNREACTED 3-MEMBER EPOXIDE GROUPS, A MONOLACTONE HAVING FROM THREE TO SIX CARBON ATOMS IN THE RANGE OF ABOUT 0.5 MOLE TO ABOUT 1.5 MOLES OF LACTONE PER EPOXY EQUIVALENT OF THE RESIN AND A CURING CATALYST SELECTED FROM THE GROUP CONSISTING OF AMINES, AMINE SALTS, ANHYDRIDES OF DICABOXYLIC ACIDS AND BORON TRIFLUORIDE AMINE COMPLEXES, WHICH CATALYST WILL CURE SAID RESIN WHEN THE COMPOSITION IS HEATED TO A TEMPERATURE OF AT LEAST ABOUT 120*C.
Claim 2
Dependent Claim
80 words
A COMPOSITION COMPRISING AN EPOXIDE RESIN CONTAINING UNREACTED 3-MEMBER EPOXIDE GROUPS, A MONOLACTONE HAVING FROM THREE TO SIX CARBON ATOMS IN THE RANGE OF ABOUT 0.5 MOLE TO ABOUT 1.5 MOLES OF LACTONE PER EPOXY EQUIVALENT OF THE RESIN AND A CURING CATALYST SELECTED FROM THE GROUP CONSISTING OF AMINES, AMINE SALTS, ANHYDRIDES OF DICABOXYLIC ACIDS AND BORON TRIFLUORIDE AMINE COMPLEXES, WHICH CATALYST WILL CURE SAID RESIN WHEN THE COMPOSITION IS HEATED TO A TEMPERATURE OF AT LEAST ABOUT 120*C.
References Cited (Backward Citations)
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Cited
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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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |