Patent US3401146A successfully refreshed from Google Patents.
US3401146A
Expired / Lapsed
US
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Hardenable and cured epoxy resin compositions
Assignee: General Mills Inc
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Filing: 1966-10-24
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Granted: 1968-09-10
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Expires: 1986-10-24
Abstract
No abstract record available.
Inventors
- 👤 Marwan R Kamal
- 👤 John R Nazy
- 👤 Harold A Wittcoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:02
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/54; C08G59/4007; C08G59/4014; C08G59/4042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A HARDENABLE COMPOSITION COMPRISING A MIXTURE OF OF (1) AN EPOXY RESIN HAVING A PLURALITY OF 1,2-EPOXIDE GROUPS AND (2) A DERIVATIVE OF (A) AN AMINE HAVING AT LEAST ONE FREE SECONDARY AMINE GROUP AND AT LEAST TWO PRIMARY AMINE GROUPS, THE SAID PRIMARY AMINE GROUPS BEING BLOCKED BY KETIMINE GROUPS, AND (B) A CARBOXYLIC ACID COMPOUND SELECTED FROM THE GROUP CONSISTING OF CARBOXYLIC ACIDS AND ANHYDRIDES, ESTERS AND ACID HALIDES OF CARBOXYLIC ACIDS, SAID DERIVATIVES HAVING BEEN PREPARED BY REACTING THE POLYAMINE WITH THE CARBOXYLIC ACID COMPOUND UNDER AMIDE FORMING CONDITIONS TO FORM AN AMIDE LINKAGE FROM THE SECONDARY AMINE GROUP AND THE CARBOXYLIC ACID COMPOUND.
Claim 2
Dependent Claim
107 words
A HARDENABLE COMPOSITION COMPRISING A MIXTURE OF OF (1) AN EPOXY RESIN HAVING A PLURALITY OF 1,2-EPOXIDE GROUPS AND (2) A DERIVATIVE OF (A) AN AMINE HAVING AT LEAST ONE FREE SECONDARY AMINE GROUP AND AT LEAST TWO PRIMARY AMINE GROUPS, THE SAID PRIMARY AMINE GROUPS BEING BLOCKED BY KETIMINE GROUPS, AND (B) A CARBOXYLIC ACID COMPOUND SELECTED FROM THE GROUP CONSISTING OF CARBOXYLIC ACIDS AND ANHYDRIDES, ESTERS AND ACID HALIDES OF CARBOXYLIC ACIDS, SAID DERIVATIVES HAVING BEEN PREPARED BY REACTING THE POLYAMINE WITH THE CARBOXYLIC ACID COMPOUND UNDER AMIDE FORMING CONDITIONS TO FORM AN AMIDE LINKAGE FROM THE SECONDARY AMINE GROUP AND THE CARBOXYLIC ACID COMPOUND.
References Cited (Backward Citations)
US3322797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |