US2500765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed fatty acid and rosin esters of resinous epoxides
Assignee: Celanese Coatings Co
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Filing: 1947-03-13
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Granted: 1950-03-14
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Expires: 1967-03-13
Abstract
No abstract record available.
Inventors
- 👤 Latane G Montague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:53
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1455; C08G59/1461; C08G59/1472
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
RESINOUS COMPOSITIONS WHICH ARE MIXED LONGCHAIN UNSATURATED VEGETABLE OIL FATTY ACID AND ROSIN ESTERS OF HIGH MOLECULAR WEIGHT RESINOUS EPOXIDES CONTAINING HYDROXYL GROUPS, WHICH RESINOUS EXPOXIDES HAVE A SOFTENING POINT BETWEEN ABOUT 90*C. AND ABOUT 110*C. AND ARE PREPARED BY REACTING A MIXTURE OF 1 MOLAR PROPORTION OF DIHYDROXY-DIPHENYL-DIMETHYL METHANE WITH ABOUT 1.15 TO 1.4 MOLAR PROPORTIONS OF EPICHLORHYDRIN AND ABOUT 1.15 TO 1.8 MOLAR PROPORTIONS OF CAUSTIC ALKALI, SAID MIXTURE BEING HEATED DURING THE FINAL STAGE OF REACTION; SAID MIXED ESTERS BEING FORMED BY HEATING FROM ABOUT 3.5 PARTS TO ABOUT 5 PARTS OF SAID RESINOUS EPOXIDE WITH FROM ABOUT 1 TO 2 PARTS OF ROSIN AND FROM ABOUT 3 TO ABOUT 5 PARTS OF SAID FATTY ACIDS AND WITH THE TOTAL PARTS SO REACTED BEING ABOUT 10, SAID ESTER COMPOSITIONS BEING READILY SOLUBLE IN HYDROCARBON SOLVENTS TO FORM VARNISH COMPOSITIONS.
Claim 2
Dependent Claim
142 words
RESINOUS COMPOSITIONS WHICH ARE MIXED LONGCHAIN UNSATURATED VEGETABLE OIL FATTY ACID AND ROSIN ESTERS OF HIGH MOLECULAR WEIGHT RESINOUS EPOXIDES CONTAINING HYDROXYL GROUPS, WHICH RESINOUS EXPOXIDES HAVE A SOFTENING POINT BETWEEN ABOUT 90*C. AND ABOUT 110*C. AND ARE PREPARED BY REACTING A MIXTURE OF 1 MOLAR PROPORTION OF DIHYDROXY-DIPHENYL-DIMETHYL METHANE WITH ABOUT 1.15 TO 1.4 MOLAR PROPORTIONS OF EPICHLORHYDRIN AND ABOUT 1.15 TO 1.8 MOLAR PROPORTIONS OF CAUSTIC ALKALI, SAID MIXTURE BEING HEATED DURING THE FINAL STAGE OF REACTION; SAID MIXED ESTERS BEING FORMED BY HEATING FROM ABOUT 3.5 PARTS TO ABOUT 5 PARTS OF SAID RESINOUS EPOXIDE WITH FROM ABOUT 1 TO 2 PARTS OF ROSIN AND FROM ABOUT 3 TO ABOUT 5 PARTS OF SAID FATTY ACIDS AND WITH THE TOTAL PARTS SO REACTED BEING ABOUT 10, SAID ESTER COMPOSITIONS BEING READILY SOLUBLE IN HYDROCARBON SOLVENTS TO FORM VARNISH COMPOSITIONS.
References Cited (Backward Citations)
US2213477A
Cited
US2324483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |