US3862067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible electrocoating composition derived from a low molecular weight copolymer of styrene and maleic anhydride
Assignee: Atlantic Richfield Co
•
Filing: 1972-04-13
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Granted: 1975-01-21
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Expires: 1992-04-13
Abstract
Abstract A new composition suitable as a coating composition is disclosed. The composition contains partially esterified styrenemaleic anhydride resins and either drying oils or semidrying oils. The esterification agent is generally a long chain C12 to C30 alkanol. The composition is thermocurable, and it can include pigmentation for color. The composition can be at least partially neutralized and dispersed in water, thereby presenting a composition suitable for electrophoretic applications.
Inventors
- 👤 John F Motier
- 👤 Donald L Marion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:16
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/4423; C09D135/00; C09D135/06; C09D5/4407; C08; C08L; C08L93/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
15 words
The electrophoretic coating composition bath of claim 1 wherein said esterification alcohol is stearyl alcohol.
Claim 2
Dependent Claim
15 words
The electrophoretic coating composition bath of claim 1 wherein said esterification alcohol is cetyl alcohol.
Claim 3
Dependent Claim
15 words
The electrophoretic coating composition bath of claim 1 wherein said esterification alcohol is eicosyl alcohol.
Claim 4
Dependent Claim
20 words
The electrophoretic coating composition bath of claim 1 wherein the esterification agents is a mixture of C16 to C20 alcohols.
Claim 5
Dependent Claim
25 words
The electrophoretic coating composition bath of claim 1 wherein said styrene-maleic anhydride copolymer has about 2:1 to 4:1 mole ratio of styrene to maleic anhydride.
Claim 6
Dependent Claim
34 words
The electrophoretic coating composition bath of claim 1 wherein said neutralization agent is selected from the group consisting of dimethanol amine, dimethyl amine, dimethyl ethanol amine, diethyl amine, triethyl amine, diisopropanol amine, and ammonia.
Claim 7
Dependent Claim
14 words
The electrophoretic coating composition bath of claim 1 wherein said neutralization agent is ammonia.
Claim 8
Dependent Claim
36 words
The electrophoretic coating composition bath of claim 1 wherein the olefinically unsaturated fatty acid triglyceride is selected from the group consisting of raw, bodied, or refined linseed, maleinized linseed, safflower, sunflower, dehydrated castor, or corn oil.
Claim 9
Dependent Claim
18 words
The electrophoretic coating composition bath of claim 1 wherein the olefinically unsaturated fatty acid triglyceride is linseed oil.
Claim 10
Dependent Claim
38 words
The electrophoretic coating composition bath of claim 1 having therein a coupling solvent selected from the group consisting of monopropyl ether of propylene glycol, n-butyl ether of ethylene glycol, ethyl ether of dietnylene glycol, n-butanol, toluene and xylene.
Claim 11
Dependent Claim
46 words
A process for electrophoretic deposition of a styrene-maleic anhydride resin on an object having an electrically conductive surface which comprises passing a direct electric current through the electrophoretic coating composition bath of claim 1, to said object in said bath, said object acting as the anode.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |