Patent US2960485A successfully refreshed from Google Patents.
US2960485A
Expired / Lapsed
US
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Alkyd resin from phthalic acid a tribasic acid
Assignee: Standard Oil Co
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Filing: 1957-06-14
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Granted: 1960-11-15
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Expires: 1977-06-14
Abstract
No abstract record available.
Inventors
- 👤 Benjamin A Bolton
- 👤 Richard E Van Strien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:22
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/46; C08G63/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
AN OIL-MODIFIED ALKYD RESIN OF ABOUT 40% OIL-LENGTH PREPARED BY (1) REACTING GLYCERINE AND SOYBEAN OIL, (2) CONDENSING THE REACTION PRODUCT MIXTURE OF STEP 1 WITH TRIMETALLIC ANHYDRICE, AND (3) CONDENSINE THE CONDENSATION REACTION PRODUCT MIXTURE OF STEP 2 WITH PHTALLIC ANHYDRIDE, THE TRIMELLITIC ANHYDRIDE BEING ABOUT 10 MOL PERCENT OF THE TOTAL ANHYDRIDE CHARGED, THE CONDENSATION REACTION BEING CARRIED OUT AT A TEMPERATURE BETWEEN ABOUT 200 AND 250*C. WITH CONTINUOUS REMOVAL OF WATER UNTIL A RESIN IS OBTAINED IN STEP 3 WHICH IS SOLUBLE IN INERT ORGANIC SOLVENTS, WHEREIN SAID GLYCERIN, SAAID OIL AND SAID ANHYDRIDES ARE CHARGED IN PROPORTION, SUCH THAT THE OIL-LENGTH OF SAID RESIN PRODUCT IS ABOUT 40%.
Claim 2
Dependent Claim
112 words
AN OIL-MODIFIED ALKYD RESIN OF ABOUT 40% OIL-LENGTH PREPARED BY (1) REACTING GLYCERINE AND SOYBEAN OIL, (2) CONDENSING THE REACTION PRODUCT MIXTURE OF STEP 1 WITH TRIMETALLIC ANHYDRICE, AND (3) CONDENSINE THE CONDENSATION REACTION PRODUCT MIXTURE OF STEP 2 WITH PHTALLIC ANHYDRIDE, THE TRIMELLITIC ANHYDRIDE BEING ABOUT 10 MOL PERCENT OF THE TOTAL ANHYDRIDE CHARGED, THE CONDENSATION REACTION BEING CARRIED OUT AT A TEMPERATURE BETWEEN ABOUT 200 AND 250*C. WITH CONTINUOUS REMOVAL OF WATER UNTIL A RESIN IS OBTAINED IN STEP 3 WHICH IS SOLUBLE IN INERT ORGANIC SOLVENTS, WHEREIN SAID GLYCERIN, SAAID OIL AND SAID ANHYDRIDES ARE CHARGED IN PROPORTION, SUCH THAT THE OIL-LENGTH OF SAID RESIN PRODUCT IS ABOUT 40%.
References Cited (Backward Citations)
US2462046A
Cited
US2469371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |