Patent US3288753A successfully refreshed from Google Patents.
US3288753A
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Hardening of epoxide resins with a diaminodiphenyl ketone
Assignee: BASF Schweiz AG
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Filing: 1962-02-05
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Granted: 1966-11-29
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Expires: 1982-02-05
Abstract
No abstract record available.
Inventors
- 👤 Winfield Graham
- 👤 Garnish Edward William
- 👤 Rainton Malcolm Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:23
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A CURABLE COMPOSITION WHICH COMPRISES A 1,2-EXPOXIDE COMPOUND HAVING A 1,2-EXPOXIDE EQUIVALENCY GREATER THAN 1 AND AS A HARDENER THEREFOR, A DIAMINODIPHENYL KETONE OF THE GENERAL FORMULA FIG01 WHEREIN THE TOTAL PRODUCTION OF AMINE HARDENER IN THE COMPOSITION IS SUCH THAT THERE IS PRESENT ONE ACTIVE AMINO HYDROGEN ATOM IN THE HARDENER TO EACH 1,-2-EPOXIDE GROUP IN THE 1,2-EPOXIDE COMPOUND.
Claim 2
Dependent Claim
60 words
A CURABLE COMPOSITION WHICH COMPRISES A 1,2-EXPOXIDE COMPOUND HAVING A 1,2-EXPOXIDE EQUIVALENCY GREATER THAN 1 AND AS A HARDENER THEREFOR, A DIAMINODIPHENYL KETONE OF THE GENERAL FORMULA FIG01 WHEREIN THE TOTAL PRODUCTION OF AMINE HARDENER IN THE COMPOSITION IS SUCH THAT THERE IS PRESENT ONE ACTIVE AMINO HYDROGEN ATOM IN THE HARDENER TO EACH 1,-2-EPOXIDE GROUP IN THE 1,2-EPOXIDE COMPOUND.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |