US3666698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble polyester resin containing phenylindan dicarboxylic acid
Assignee: Sherwin Williams Co
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Filing: 1970-12-14
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Granted: 1972-05-30
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Expires: 1990-12-14
Abstract
Abstract Alkyd resins which contain critical amounts of tall oil fatty acid and phenylindane dicarboxylic acid (PIDA) in combination with trimetllitic anhydride and trimethylol propane gives a resin which is dispersible in water, yet has exceptionally high mildew resistance, strength, hydrolytic stability, chemical resistance, film hardness, and excellent properties of fast drying and adhesion. The resin may be deposited in an electrophoresis bath if it is first solubilized by the addition of an alkaline material. The resin is self-curing and dries in air to a hard, durable, glossy film which does not require to be baked.
Inventors
- 👤 Robert R Harris
- 👤 Carl H Kressman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:45
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/123; C08G63/127; C08G63/13; C08G63/46; C08G63/48; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
28 words
The resin of claim 1 wherein said oil is tall oil or safflower oil, said trihydroxy polyol is trimethylol propane and said benzene tribasic anhydride is trimellitic anhydride.
Claim 2
Dependent Claim
93 words
An alkyd resin prepared by reacting 30 to 51 percent by weight of an oil containing an olefinically unsaturated carboxylic fatty acid having at least 10 carbon atoms, with more than 30 percent but less than 45 percent of phenylindan dicarboxylic acid and a sufficient amount of a trihydroxy polyol to provide an OH:COOH ratio in the range from about 1.5 to about 2.5 and from about 5 to about 15 percent by weight and trimellitic anhydride in the range from about 5 to about 15 percent by weight on a water-free basis.
Claim 3
Dependent Claim
21 words
The composition of claim 3 wherein said oil is tall oil or safflower oil and said trihydroxy polyol is trimethylol propane.
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |