US3023190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of amine curing epoxy resins and composition therefor
Assignee: Sherwin Williams Co
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Filing: 1955-08-10
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Granted: 1962-02-27
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Expires: 1975-08-10
Abstract
No abstract record available.
Inventors
- 👤 Damusis Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:38
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/182; C08G59/184
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
THE METHOD OF CURING A POLYEPOXY-POLYHYDROXY ETHER RESIN WHICH IS A GLYCIDYL POLYETHER OF A POLYHYDRIC PHENOL HAVING A 1,2-EPOXY EQUIVALENCY BETWEEN 1 AND 2 WHICH COMPRISES ADMIXING WITH SAID ETHER RESIN IN AN AMOUNT SUFFICIENT TO HARDEN SAID RESIN, FROM ABOUT 4% TO ABOUT 12% BY WEIGHT OF SAID ETHER RESIN OF A MIXTURE OF (A) FROM ABOUT 70% TO 10% BY VOLUME OF AT LEAST ONE AMINE SELECTED FROM THE GROUP CONSISTING OF TERTIARY AMINES WHICH CONTAIN AT LEAST ONE TERTIARY AMINO GROUP HAVING ATTACHED THERETO AN ALKYL GROUP FROM 1 TO 3 CARBON ATOMNS AND NO MORE THAN ONE AMINO-HYDROGEN ATOM WITH AVAILABLE HYDROGEN, AND SECONDARY AMINES WHICH CONTAIN AN ALKYL GROUP OF FROM 1-3 CARBON ATOMS ATTACHED TO AN AMINO-NITROGEN ATOM AND NO MORE THAN ONE AMINO-NITROGEN ATOM WITH AVAILABLE HYDROGEN; AND (B) FROM ABOUT 30% TO ABOUT 90% BY VOLUME OF AT LEAST ONE POLYAMINE SELECTED FROM THE GROUP CONSISTING OF PRIMARY POLYAMINES, SECONDARY POLYAMINES, AND MIXED PRIMARY-
Claim 2
Independent Claim
163 words
THE METHOD OF CURING A POLYEPOXY-POLYHYDROXY ETHER RESIN WHICH IS A GLYCIDYL POLYETHER OF A POLYHYDRIC PHENOL HAVING A 1,2-EPOXY EQUIVALENCY BETWEEN 1 AND 2 WHICH COMPRISES ADMIXING WITH SAID ETHER RESIN IN AN AMOUNT SUFFICIENT TO HARDEN SAID RESIN, FROM ABOUT 4% TO ABOUT 12% BY WEIGHT OF SAID ETHER RESIN OF A MIXTURE OF (A) FROM ABOUT 70% TO 10% BY VOLUME OF AT LEAST ONE AMINE SELECTED FROM THE GROUP CONSISTING OF TERTIARY AMINES WHICH CONTAIN AT LEAST ONE TERTIARY AMINO GROUP HAVING ATTACHED THERETO AN ALKYL GROUP FROM 1 TO 3 CARBON ATOMNS AND NO MORE THAN ONE AMINO-HYDROGEN ATOM WITH AVAILABLE HYDROGEN, AND SECONDARY AMINES WHICH CONTAIN AN ALKYL GROUP OF FROM 1-3 CARBON ATOMS ATTACHED TO AN AMINO-NITROGEN ATOM AND NO MORE THAN ONE AMINO-NITROGEN ATOM WITH AVAILABLE HYDROGEN; AND (B) FROM ABOUT 30% TO ABOUT 90% BY VOLUME OF AT LEAST ONE POLYAMINE SELECTED FROM THE GROUP CONSISTING OF PRIMARY POLYAMINES, SECONDARY POLYAMINES, AND MIXED PRIMARY-
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) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |