Patent US2928811A successfully refreshed from Google Patents.
US2928811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxide resin-amide compositions
Assignee: Celanese Coatings Co
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Filing: 1957-11-18
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Granted: 1960-03-15
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Expires: 1977-11-18
Abstract
No abstract record available.
Inventors
- 👤 William J Belanger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:52
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/686; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4021; C08G59/50; C08G59/5046; C08G59/5053; C08G59/508; C08G59/5086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN THE PROCESS FOR RESINIFYING AND CURING A GLYCIDYL POLYETHER OF A POLYHYDRIC COMPOUND OF THE GROUP CONSISTING OF POLYHYDRIC PHENOLS AND POLYHYDRIC ALCHOLS, SAID GLYCIDYL POLYETHER HAVING AN EPOXY EQUIVALENCY GREATER THAN ONE AND AN EPOXIDE EQUIVALENT NOT EXCEEDING TWO THOUSAND, WHEREIN THE GLYCIDYL POLYETHER IS MIXED AND HEAT REACTED WITH AN AMIDE SELETED FORM THE GROUP CONSISTING OF BENZOGUANAMINE AND DICYANDIAMIDE, THE IMPROVEMENT WHICH COMPRISES HEAT REACTING THE GLYCIDYL POLYETHER AND THE AMIDE UTILIZING AS AN ACCELARATOR FOR THE REACTION 0.1 TO 10 PERCENT, BY WEIGHT BASED ON THE POLYETHER-AMIDE MIXTURE, OF AN ACTIVATOR CONSISTING OF A QUATERNARY AMMONIUM SALT SELECTED FROM THE GROUP CONSISTING OF TETRAALKYL, ARYL TRIALKYL AND ALKARYL TRIALKYL AMMONIUM SALTS OF ACIDS HAVING PK VALUES NOT EXCEEDING SIX, WHEREIN THE ARYL, ALKARYL AND ALKYL SUBSTITUENTS HAVE NO MORE THAN EIGHT CARBON ATOMS, CONSIDERING AN EPOXIDE EQUIVALENT GLYCIDYL POLYETHER AS THE WEIGHT IN GRAMS OF POLYETHER PE R EPOXIDE GROUP.
Claim 2
Dependent Claim
155 words
IN THE PROCESS FOR RESINIFYING AND CURING A GLYCIDYL POLYETHER OF A POLYHYDRIC COMPOUND OF THE GROUP CONSISTING OF POLYHYDRIC PHENOLS AND POLYHYDRIC ALCHOLS, SAID GLYCIDYL POLYETHER HAVING AN EPOXY EQUIVALENCY GREATER THAN ONE AND AN EPOXIDE EQUIVALENT NOT EXCEEDING TWO THOUSAND, WHEREIN THE GLYCIDYL POLYETHER IS MIXED AND HEAT REACTED WITH AN AMIDE SELETED FORM THE GROUP CONSISTING OF BENZOGUANAMINE AND DICYANDIAMIDE, THE IMPROVEMENT WHICH COMPRISES HEAT REACTING THE GLYCIDYL POLYETHER AND THE AMIDE UTILIZING AS AN ACCELARATOR FOR THE REACTION 0.1 TO 10 PERCENT, BY WEIGHT BASED ON THE POLYETHER-AMIDE MIXTURE, OF AN ACTIVATOR CONSISTING OF A QUATERNARY AMMONIUM SALT SELECTED FROM THE GROUP CONSISTING OF TETRAALKYL, ARYL TRIALKYL AND ALKARYL TRIALKYL AMMONIUM SALTS OF ACIDS HAVING PK VALUES NOT EXCEEDING SIX, WHEREIN THE ARYL, ALKARYL AND ALKYL SUBSTITUENTS HAVE NO MORE THAN EIGHT CARBON ATOMS, CONSIDERING AN EPOXIDE EQUIVALENT GLYCIDYL POLYETHER AS THE WEIGHT IN GRAMS OF POLYETHER PE R EPOXIDE GROUP.
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) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |