US2932623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thixotropic coating vehicle containing a short oil alkyd resin and a copolymer polyamide resin
Assignee: General Mills Inc
•
Filing: 1956-04-02
•
Granted: 1960-04-12
•
Expires: 1976-04-02
Abstract
No abstract record available.
Inventors
- 👤 Glaser David
- 👤 Wittcoff Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:54
CPC Classifications
C; C08; C08L; C08L77/00; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/46; C08G63/48; C09; C09D; C09D167/00; C09D167/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A THIXOTROPIC VEHICLE COMPOSED OF (1) AN AROMATIC HYDROCARBON SOLVENT, (2) A SHORT LIL ALKYD RESIN FORMED BY THE REACTION OF A MIXTURE OF PHTHALIC ANHYDRIDE, A POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF GLYCEROL AND PENTAERYTHRITOL AND FROM 20 TO 45% BY WEIGHT OF THE MIXTURE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF NATURALLY OCCURRING GLYCERIDE OILS AND THE FATTY ACIDS THEREOF CONTAINING FROM 8 TO 22 CARBON ATOMS AND (3) FROM 1 TO 5% BY WEIGHT BASED ON SAID SHORT OIL ALKYD RESIN OF A POLYAMIDE WHICH BASED ON SAID THE REACTION OF A MIXTURE OF (A) DIMERIZED AND TRIMERIZED POLYMERIC FAT ACIDS (B) FROM 3 TO 30% BY WEIGHT BASED ON THE TOTAL ACIDS OF ALOPHATIC DICARBOXYLIC ACIDS CONTAINING LESS THAN 14 CARBON ATOMS AND (C) SUBSTANTIALLY AN EQUIVALENT WEIGHT OF A POLYAMINE OF THE GENERAL STRUCTURAL FORMULA-H2N(R''NH)NH WHERE R'' IS AN ALKYLENE RADICAL AND N IS AN INTEGER LESS THAN 6.
Claim 2
Dependent Claim
158 words
A THIXOTROPIC VEHICLE COMPOSED OF (1) AN AROMATIC HYDROCARBON SOLVENT, (2) A SHORT LIL ALKYD RESIN FORMED BY THE REACTION OF A MIXTURE OF PHTHALIC ANHYDRIDE, A POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF GLYCEROL AND PENTAERYTHRITOL AND FROM 20 TO 45% BY WEIGHT OF THE MIXTURE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF NATURALLY OCCURRING GLYCERIDE OILS AND THE FATTY ACIDS THEREOF CONTAINING FROM 8 TO 22 CARBON ATOMS AND (3) FROM 1 TO 5% BY WEIGHT BASED ON SAID SHORT OIL ALKYD RESIN OF A POLYAMIDE WHICH BASED ON SAID THE REACTION OF A MIXTURE OF (A) DIMERIZED AND TRIMERIZED POLYMERIC FAT ACIDS (B) FROM 3 TO 30% BY WEIGHT BASED ON THE TOTAL ACIDS OF ALOPHATIC DICARBOXYLIC ACIDS CONTAINING LESS THAN 14 CARBON ATOMS AND (C) SUBSTANTIALLY AN EQUIVALENT WEIGHT OF A POLYAMINE OF THE GENERAL STRUCTURAL FORMULA-H2N(R''NH)NH WHERE R'' IS AN ALKYLENE RADICAL AND N IS AN INTEGER LESS THAN 6.
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) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |