US4263194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anodic electrocoating compositions
Assignee: Lilly Industries Inc
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Filing: 1980-01-10
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Granted: 1981-04-21
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Expires: 2000-01-10
Abstract
Abstract An electrocoating composition useful for electrocoating a paint coating from an aqueous solution onto an anode electrical conductive substrate. The electrocoating composition is based upon a fatty acid ester and alpha , beta -unsaturated dicarboxylic acid modified styrene-allyl alcohol copolymer further modified with an acid-functional acrylic copolymer. The electrocoated film can be air dried or heat cured.
Inventors
- 👤 Edward T. Turpin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:34
CPC Classifications
C; C09; C09D; C09D129/00; C09D129/02; C09D129/06; C09D129/08; C09D5/00; C09D5/44; C09D5/4407; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
An aqueous electrocoating composition for electrocoating a paint film onto an anode substrate, the improvement comprising: a binder polymer comprising of (a) a styrene-allyl alcohol copolymer, (b) an unsaturated aliphatic fatty acid, (c) an α,β-unsaturated dicarboxylic acid or anhydride, and (d) an acid-functional acrylic copolymer, wherein said copolymer comprises on a weight basis: (a) between 20% and 40% of a styrene-allyl alcohol copolymer containing about 2.8 to 4.3 weight parts of copolymerized styrene per 1 weight part of copolymerized allyl alcohol wherein the copolymer has unreacted hydroxyl groups; (b) between 20% and 50% of an unsaturated aliphatic fatty acid esterified with said hydroxyl groups on said copolymer (a); (c) between 0% and 3% of an α,β-unsaturated dicarboxylic acid or anhydride esterified with said hydroxyl group on said copolymer (a); and (d) between 20% and 50% acid-functional acrylic copolymer containing double bonds coreacted by addition copolymerization with double bonds in the fatty acid and the dicarboxylic acid or anhydride (c), and said acid-functional groups on said acid-functional acrylic copolymer being neutralized whereby said binder polymer composition is solubilized in water to form an anodic electrocoating composition.
Claim 2
Dependent Claim
185 words
An aqueous electrocoating composition for electrocoating a paint film onto an anode substrate, the improvement comprising: a binder polymer comprising of (a) a styrene-allyl alcohol copolymer, (b) an unsaturated aliphatic fatty acid, (c) an α,β-unsaturated dicarboxylic acid or anhydride, and (d) an acid-functional acrylic copolymer, wherein said copolymer comprises on a weight basis: (a) between 20% and 40% of a styrene-allyl alcohol copolymer containing about 2.8 to 4.3 weight parts of copolymerized styrene per 1 weight part of copolymerized allyl alcohol wherein the copolymer has unreacted hydroxyl groups; (b) between 20% and 50% of an unsaturated aliphatic fatty acid esterified with said hydroxyl groups on said copolymer (a); (c) between 0% and 3% of an α,β-unsaturated dicarboxylic acid or anhydride esterified with said hydroxyl group on said copolymer (a); and (d) between 20% and 50% acid-functional acrylic copolymer containing double bonds coreacted by addition copolymerization with double bonds in the fatty acid and the dicarboxylic acid or anhydride (c), and said acid-functional groups on said acid-functional acrylic copolymer being neutralized whereby said binder polymer composition is solubilized in water to form an anodic electrocoating composition.
References Cited (Backward Citations)
US3650998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |