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Surfacer treating process for blemished electrocoat substrates and surfacer composition therefor

Assignee: SCM Corp
•
Filing: 1970-03-05
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Granted: 1972-06-20
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Expires: 1990-03-05
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Abstract

Abstract This patent application sets forth a process for surface treating an electrode substrate used in electrocoating, specifically, one which has surface imperfections or blemishes, and a surfacer composition therefor. The surfacer composition is a curable mixture comprising binder resin and sufficient electrically conductive filler mixed therewith for at most insignificantly changing, in cured thin final section on a blemished surface region of said substrate, the electrical resistance of said region relative to that of the untreated adjacent substrate to be coated. In accordance with the process surfacer composition is applied in thin layer to the blemished region of the substrate, cured (and when appropriate further and finally finished as by wet sanding), then the thus-treated substrate is electrocoated with paint.

Inventors

  • 👤 Allan E Gilchrist

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 13:20
CPC Classifications
C; C25; C25D; C25D13/00; C25D13/20; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917; Y10T428/26; Y10T428/263; Y10T428/264

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 47 words
The electrocoat substrate of claim 1, wherein said thin layer is not substantially thicker than 2 mils and said electrical resistance of said coated blemished region is not substantially above about 5 ohms per square centimeter from above that of a corresponding uncoated region on said substrate.
Claim 2
Dependent Claim 34 words
The electrocoat substrate of claim 1, wherein said cured composition comprises from about 1 part binder resin to 10 parts electrically conductive filler to about 9 parts resin to 1 part electrically conductive filler.
Claim 3
Dependent Claim 23 words
The electrocoat substrate of claim 3, wherein said curable composition comprises from about 1.5 to 3.5 parts resin to 1 part conductive filler.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-06-20 1975-12-20 1976-06-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-06-20 1979-12-20 1980-06-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-06-20 1983-12-20 1984-06-20 $7700.00 Window Closed / Lapsed

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