Patent US4525260A successfully refreshed from Google Patents.
US4525260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathodic electrocoating composition compounded with latex binder and possessing enhanced gloss
Assignee: Akzo Nobel Paints LLC
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Filing: 1983-07-14
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Granted: 1985-06-25
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Expires: 2003-07-14
Abstract
Abstract An improved cathodic electrocoating composition comprises an aqueous suspension of synthetic, cation-active, film-forming latex particles characterized by a latex gel content that is not substantially above about 10%.
Inventors
- 👤 Kirk J. Abbey
- 👤 James R. Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:38
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4407
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
83 words
A method of electrocoating an electrically conductive surface serving as a cathode in an electrical circuit comprising said cathode, an anode, and an aqueous electrodepositable composition wherein net unidirectional electric current is passed through said circuit for causing deposition of said composition on said cathode and the resulting electrodeposit is baked to cure it, said method being characterized by using as said composition one that comprises synthetic, cation-active, film-forming, amino-stabilized latex particles having latex microgel content that is no substantially above about 2%.
Claim 2
Independent Claim
83 words
A method of electrocoating an electrically conductive surface serving as a cathode in an electrical circuit comprising said cathode, an anode, and an aqueous electrodepositable composition wherein net unidirectional electric current is passed through said circuit for causing deposition of said composition on said cathode and the resulting electrodeposit is baked to cure it, said method being characterized by using as said composition one that comprises synthetic, cation-active, film-forming, amino-stabilized latex particles having latex microgel content that is no substantially above about 2%.
Claim 3
Dependent Claim
33 words
The method of claim 1 wherein said latex is a copolymer containing acrylate and/or methacrylate monomer units and is structurally cation-active by its containing monomer units that have secondary and/or tertiary amino functionality.
Claim 4
Dependent Claim
32 words
The method of claim 1 wherein there is crosslinkability of said resulting electrodeposit provided by hydroxyl groups present that are reactable upon curing of said resulting electrodeposit with blocked/isocyanate groups present therein.
Claim 5
Dependent Claim
28 words
The method of claim 1 wherein said aqueous electrodepositable composition contains a polyether surfactant and particulate material in the form of inorganic particles, plastic particles, and/or powder paint.
Claim 6
Dependent Claim
32 words
The method of claim 1 wherein said aqueous electrodepositable composition is acid-ionized, contains about 1-25% solids, and the latex present therein has average particle size not substantially smaller than about 1000 Å.
Claim 7
Dependent Claim
21 words
The method of claim 1 wherein said aqueous electrodepositable composition is maintained at a temperature of at least about 40° C.
Claim 8
Dependent Claim
39 words
The method of claim 1 wherein said aqueous electrodepositable composition is replenished with a replenishment composition that is like said aqueous electrodepositable composition except that it is richer in solids and lower in acid than said aqueous electrodepositable composition.
References Cited (Backward Citations)
US3873488A
Cited
US3882009A
Cited
US3994792A
Cited
US3998776A
Cited
US4017372A
Cited
US4225406A
Cited
US4175018A
Cited
US4204932A
Cited
US4225407A
Cited
US4294741A
Cited
US4379869A
Cited
DE3123536A1
Cited
US4432850A
Cited
US4380601A
Cited
US4395444A
Cited
US4399254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |