Technique for electrodeposition of water-based polymeric coating

Details Technique for electrodeposition of water-based polymeric coating Technique for electrodeposition of water-based polymeric coating

1977-03-09

1979-01-02

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

204 15, 204 28, 204 56R, 204181R, C25D 1000, C25D 502, C25D 1100

Patent

active

041326083

ABSTRACT:
A water-based polymeric coating comprising a novolak resin is deposited electrolytically from a solution of a novolak resin upon a conductive substrate at an initial current density ranging from 10-30 milliamperes per square centimeter. The resultant coating, after cross linking by subsequent chemical treatment, is flexible, firmly adherent and evidences good thermal stability and insulation characteristics, so suggesting its use as a cover coat for printed circuits.

REFERENCES:
patent: 3547790 (1970-12-01), Dannels et al.
patent: 3809634 (1974-05-01), Brown et al.
patent: 3984382 (1976-10-01), Parekh et al.
patent: 4000045 (1976-12-01), Rotzow

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