US3316191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing epoxy resins
Assignee: AT&T Inc
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Filing: 1961-08-08
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Granted: 1967-04-25
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Expires: 1981-08-08
Abstract
No abstract record available.
Inventors
- 👤 Montesano Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:05
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/56; C08G59/58; C08L; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A METHOD CURING A POLYEPOXY-POLYHYDROXY ETHER RESIN COMPRISING A GLYCIDYL ETHER OF A POLYHYDTRIC PHENOL HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1 WHICH COMPRISES ADMIXING THE SAID RESIN WITH A CURING AGENT SELECTED FROM THE GROUP CONSISTING OF PRIMARY POLYAMINES, SECONDARY POLYAMINES AND POLYAMIDES, SAID PRIMARY AND SECONDARY POLYAMINES HAVING AT LEAST ONE AVAILABLE HYDROGEN ATOM ATTACHED TO EACH OF AT LEAST TWO AMINO NITROGEN ATOMS PER MOLECULE, SAID POLYAMIDES CONTAINING TERMINAL GROUPS SELECTED FROM AMINE GROUPS, CARBOXYL GROUPS AND MIXTURES THEREOF, THE NUMBER OF FREE GROUPS IN SAID POLYAMIDE RANGING FROM 200-320, TOGETHER WITH AN ACCELERATOR CONSISTING ESSENTIALLY OF DODECENYL SUCCINIC ANHYDRIDE IN AN AMOUNT WITHIN THE RANGE OF 1-10 PARTS, BY WEIGHT, PER 100 PARTS, BY WEIGHT, OF EPOXY RESIN AND UP TO 1 PART, BY WEIGHT, PER 2 PARTS, BY WEIGHT, OF CURING AGENT.
Claim 2
Independent Claim
137 words
A METHOD CURING A POLYEPOXY-POLYHYDROXY ETHER RESIN COMPRISING A GLYCIDYL ETHER OF A POLYHYDTRIC PHENOL HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1 WHICH COMPRISES ADMIXING THE SAID RESIN WITH A CURING AGENT SELECTED FROM THE GROUP CONSISTING OF PRIMARY POLYAMINES, SECONDARY POLYAMINES AND POLYAMIDES, SAID PRIMARY AND SECONDARY POLYAMINES HAVING AT LEAST ONE AVAILABLE HYDROGEN ATOM ATTACHED TO EACH OF AT LEAST TWO AMINO NITROGEN ATOMS PER MOLECULE, SAID POLYAMIDES CONTAINING TERMINAL GROUPS SELECTED FROM AMINE GROUPS, CARBOXYL GROUPS AND MIXTURES THEREOF, THE NUMBER OF FREE GROUPS IN SAID POLYAMIDE RANGING FROM 200-320, TOGETHER WITH AN ACCELERATOR CONSISTING ESSENTIALLY OF DODECENYL SUCCINIC ANHYDRIDE IN AN AMOUNT WITHIN THE RANGE OF 1-10 PARTS, BY WEIGHT, PER 100 PARTS, BY WEIGHT, OF EPOXY RESIN AND UP TO 1 PART, BY WEIGHT, PER 2 PARTS, BY WEIGHT, OF CURING AGENT.
References Cited (Backward Citations)
US2891026A
Cited
US2935488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |