US2627508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Long oil alkyd resins
Assignee: California Research LLC
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Filing: 1949-06-27
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Granted: 1953-02-03
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Expires: 1969-06-27
Abstract
No abstract record available.
Inventors
- 👤 Funston G Lum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:37
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/46; C08G63/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
AN ALKYD RESIN CONSISTING OF A PRODUCT OF CONDENSATION OF A PHTHALIC ACID IN WHICH THE CARBOXYL GROUPS ARE SEPARATED FROM EACH OTHER BY AT LEAST 3 CARBON ATOMS OF THE BENZENE RING AND WHICH IS FREE FROM REACTIVE SUBSTITUENTS OTHER THAN SAID CARBOXYL GROUPS, WITH THE PRODUCT OF ALCOHOLYSIS OF A SEMI-DRYING OIL BY PENT AERYTHRITOL, SAID PRODUCT OF ALCOHOLYSIS ESSENTIALLY CONSISTING OF A MIXTURE OF PARTIAL ESTERS OF POLYHYDRIC ALCOHOLS FROM THE GROUP CONSISTING OF PANTAERYTHRITOL AND GLYCEROL, AND CONTAINING ON THE AVERAGE FROM 1.5 TO 2.4 HYDROXY-L GROUPS PER MOLECULE, SAID ALKYD RESIN HAVING A SEMI-DRYING OIL LENGTH OF 70 TO 80%, CALCULATED AS TRIGLYCERIDE, AN ACID NUMBER OF LESS THAN 15 AND BEING FURTHER CHARACTERIZED BY ITS ABILITY TO DISSOLVE IN 350 MINERAL SPIRITS TO PRODUCE A 60% SOLUTION HAVING A VISCOSITY OF AT LEAST 4 POISES AT 25* C. AND A TACK-FREE DRYING TIME OF ABOUT 2 HOURS.
Claim 2
Dependent Claim
153 words
AN ALKYD RESIN CONSISTING OF A PRODUCT OF CONDENSATION OF A PHTHALIC ACID IN WHICH THE CARBOXYL GROUPS ARE SEPARATED FROM EACH OTHER BY AT LEAST 3 CARBON ATOMS OF THE BENZENE RING AND WHICH IS FREE FROM REACTIVE SUBSTITUENTS OTHER THAN SAID CARBOXYL GROUPS, WITH THE PRODUCT OF ALCOHOLYSIS OF A SEMI-DRYING OIL BY PENT AERYTHRITOL, SAID PRODUCT OF ALCOHOLYSIS ESSENTIALLY CONSISTING OF A MIXTURE OF PARTIAL ESTERS OF POLYHYDRIC ALCOHOLS FROM THE GROUP CONSISTING OF PANTAERYTHRITOL AND GLYCEROL, AND CONTAINING ON THE AVERAGE FROM 1.5 TO 2.4 HYDROXY-L GROUPS PER MOLECULE, SAID ALKYD RESIN HAVING A SEMI-DRYING OIL LENGTH OF 70 TO 80%, CALCULATED AS TRIGLYCERIDE, AN ACID NUMBER OF LESS THAN 15 AND BEING FURTHER CHARACTERIZED BY ITS ABILITY TO DISSOLVE IN 350 MINERAL SPIRITS TO PRODUCE A 60% SOLUTION HAVING A VISCOSITY OF AT LEAST 4 POISES AT 25* C. AND A TACK-FREE DRYING TIME OF ABOUT 2 HOURS.
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) | 1956-02-03 | 1956-08-04 | 1957-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-03 | 1960-08-04 | 1961-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-03 | 1964-08-04 | 1965-02-03 | $7700.00 | Window Closed / Lapsed |