US3301795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-catalyzing epoxy resin compositions, improved polycarboxylic acid anhydride curing agent therefor and process for preparing them
Assignee: Honeywell International Inc
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Filing: 1961-08-09
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Granted: 1967-01-31
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Expires: 1981-08-09
Abstract
No abstract record available.
Inventors
- 👤 George S Wooster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:48
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/68; C08G59/686
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
30 words
AN IMPROVED CURING AGENT FOR EPOXY RESINS COMPRISING A MAJOR PROPORTION OF A POLYCARBOXYLIC ACID ANHYDRIDE HAVING DISSOLVED THEREIN A MINOR PROPORTION OF A MONO-AMINE SALT OF A POLYCARBOXYLIC ACID.
Claim 2
Dependent Claim
30 words
AN IMPROVED CURING AGENT FOR EPOXY RESINS COMPRISING A MAJOR PROPORTION OF A POLYCARBOXYLIC ACID ANHYDRIDE HAVING DISSOLVED THEREIN A MINOR PROPORTION OF A MONO-AMINE SALT OF A POLYCARBOXYLIC ACID.
Claim 3
Dependent Claim
61 words
A HEAT CURABLE, SELF-CATALYZING RESIN COMPOSITION COMPRISING (1) AN EPOXY RESIN SELECTED FROM THE GROUP CONSISTING OF GLYCIDYL POLYETHERS OF POLYHYDRIC PHENOLS, GLYCIDYL POLYETHERS OF POLYHYDRIC ALCOHOLS, GLYCIDYL POLYETHERS FROM PHENOL-ALDEHYDE CONDENSATION PRODUCTS AND EPOXY ALICYCLIC ESTERS, (2) A POLYCARBOXYLIC ACID ANHYDRIDE POLYMERIZABLE WITH SAID EPOXY RESIN AND (3) A CATALYTIC AMOUNT OF AN ORGANIC MONO-AMINE SALT OF A POLYCARBOXYLIC ACID.
Claim 4
Dependent Claim
61 words
A HEAT CURABLE, SELF-CATALYZING RESIN COMPOSITION COMPRISING (1) AN EPOXY RESIN SELECTED FROM THE GROUP CONSISTING OF GLYCIDYL POLYETHERS OF POLYHYDRIC PHENOLS, GLYCIDYL POLYETHERS OF POLYHYDRIC ALCOHOLS, GLYCIDYL POLYETHERS FROM PHENOL-ALDEHYDE CONDENSATION PRODUCTS AND EPOXY ALICYCLIC ESTERS, (2) A POLYCARBOXYLIC ACID ANHYDRIDE POLYMERIZABLE WITH SAID EPOXY RESIN AND (3) A CATALYTIC AMOUNT OF AN ORGANIC MONO-AMINE SALT OF A POLYCARBOXYLIC ACID.
References Cited (Backward Citations)
US2955101A
Cited
US2949441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |