US2947711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxide compositions containing maleic anhydride-unsaturated organic acid adducts and method of forming infusible products therefrom
Assignee: Celanese Coatings Co
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Filing: 1955-08-01
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Granted: 1960-08-02
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Expires: 1975-08-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold G Cooke
- 👤 John E Masters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:51
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4215
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
THE METHOD OF CONVERTING AN EPOXIDE COMPOUND HAVING A PLURALITY OF EPOXIDE GROUPS SELECTED FROM THE GROUP CONSISTING OF (1) GLYCIDYL ETHERS OF POLYHDRIC PHENOLS, (2) GLYCIDYL ETHERS OF POLYHYDRIC ALCOHOLS, AND (3) EPOXIDIZED ESTERS OF AN UNSUBSTITUTED POLYHYDRIC ALCOHOL WHICH IS FREE OF NON-BENZENOID UNSATURATION AND AT LEAST ONE OF THE ACIDS FROM THE GROUP CONSISTING OF OLEIC AND LINOLEIC ACIDS INTO CROSS-LINKED INFUSIBLE, INSOLUBLE REACTION PRODUCTS WHICH COMPRISES HEATING SAID EPOXIDE COMPOUND WITH A MALEIC-ANHYDRIDE-ROSIN ACID ADDUCT HAVING AN ACID ANHYDRIDE GROUP AND A FREE CARBOXYL GROUP IN PROPORTIONS OF FROM ABOUT 0.2 TO ABOUT 2.0 EPOXIDE EQUIVALENTS OF THE EPOXIDE COMPOUND TO ONE CARBOXYL EQUIVALENT OF THE ADDUCT, SAID ADDUCT BEING PRODUCED BY THE REACTION OF MALEIC ANHYDRIDE WITH ROSIN ACID, AND SAID HEATING BEING CARRIED OUT AT A SUFFICIENT TEMPERATURE FOR A SUFFICIENT LENGTH OF TIME TO CONVERT THE REACTION MIXTURE INOT AN INFUSIBLE, INSOLUBLE REACTION PRODUCT.
Claim 2
Independent Claim
151 words
THE METHOD OF CONVERTING AN EPOXIDE COMPOUND HAVING A PLURALITY OF EPOXIDE GROUPS SELECTED FROM THE GROUP CONSISTING OF (1) GLYCIDYL ETHERS OF POLYHDRIC PHENOLS, (2) GLYCIDYL ETHERS OF POLYHYDRIC ALCOHOLS, AND (3) EPOXIDIZED ESTERS OF AN UNSUBSTITUTED POLYHYDRIC ALCOHOL WHICH IS FREE OF NON-BENZENOID UNSATURATION AND AT LEAST ONE OF THE ACIDS FROM THE GROUP CONSISTING OF OLEIC AND LINOLEIC ACIDS INTO CROSS-LINKED INFUSIBLE, INSOLUBLE REACTION PRODUCTS WHICH COMPRISES HEATING SAID EPOXIDE COMPOUND WITH A MALEIC-ANHYDRIDE-ROSIN ACID ADDUCT HAVING AN ACID ANHYDRIDE GROUP AND A FREE CARBOXYL GROUP IN PROPORTIONS OF FROM ABOUT 0.2 TO ABOUT 2.0 EPOXIDE EQUIVALENTS OF THE EPOXIDE COMPOUND TO ONE CARBOXYL EQUIVALENT OF THE ADDUCT, SAID ADDUCT BEING PRODUCED BY THE REACTION OF MALEIC ANHYDRIDE WITH ROSIN ACID, AND SAID HEATING BEING CARRIED OUT AT A SUFFICIENT TEMPERATURE FOR A SUFFICIENT LENGTH OF TIME TO CONVERT THE REACTION MIXTURE INOT AN INFUSIBLE, INSOLUBLE REACTION PRODUCT.
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) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |