US2951822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of polyglycidyl aromatic amines and resinous compositions made therefrom
Assignee: Union Carbide Corp
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Filing: 1956-11-23
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Granted: 1960-09-06
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Expires: 1976-11-23
Abstract
No abstract record available.
Inventors
- 👤 Norman H Reinking
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:06
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/10; C07; C07D; C07D303/00; C07D303/02; C07D303/36; C08G59/18; C08G59/20; C08G59/22; C08G59/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
THE PROCESS FOR PRODUCING POLYGLYCIDYL AMINES HAVING AN EPOXY CONTENT OF AT LEAST ABOUT 80%, WHICH COMPRISES REACTING A PRIMARY AROMATIC AMINE WITH EPICHLOROHYDRIN, THE EPICHLOROHYDRIN BEING PRESENT IN AN AMOUNT AT LEAST EQUAL TO THE NUMBER OF MOLES OF THE PRIMARY AROMATIC AMINE MULTIPLIED BY TWICE THE NUMBER OF PRIMARY AMINE GROUPS TO PRODUCE THE CORRESPONDING CHLOROHYDRIN AMINE INTERMEDIATE AND REACTING THE RESULTING AMINE CHLOROHYDRIN WITH ALKALI TO EFFECT DEHYDROCHLORINATION.
Claim 2
Dependent Claim
71 words
THE PROCESS FOR PRODUCING POLYGLYCIDYL AMINES HAVING AN EPOXY CONTENT OF AT LEAST ABOUT 80%, WHICH COMPRISES REACTING A PRIMARY AROMATIC AMINE WITH EPICHLOROHYDRIN, THE EPICHLOROHYDRIN BEING PRESENT IN AN AMOUNT AT LEAST EQUAL TO THE NUMBER OF MOLES OF THE PRIMARY AROMATIC AMINE MULTIPLIED BY TWICE THE NUMBER OF PRIMARY AMINE GROUPS TO PRODUCE THE CORRESPONDING CHLOROHYDRIN AMINE INTERMEDIATE AND REACTING THE RESULTING AMINE CHLOROHYDRIN WITH ALKALI TO EFFECT DEHYDROCHLORINATION.
References Cited (Backward Citations)
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Cited
US1977252A
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US1977253A
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US2615008A
Cited
US2615007A
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Cited
US2767157A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |