Process for cathodic electrocoating and photocuring

Details Process for cathodic electrocoating and photocuring Process for cathodic electrocoating and photocuring

1976-05-24

1979-08-28

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

20415915, 20415916, 20415919, 204181E, C25D 1306, C25D 1310, C08F 800

Patent

active

041660170

ABSTRACT:
An electrocoating composition containing a polymer having pendant amine groups, an alpha-, beta-ethylenically unsaturated carbonyl cross-linking agent, and an ultraviolet photosensitizer can be electrodeposited onto a cathode substrate disposed within an aqueous electrocoating bath. The amine groups of the polymer are protonated to render the polymer water dispersible prior to electrodeposition and upon electrodeposition the amine groups become de-protonated. The cross-linking agent cross-links the polymer upon ultraviolet irradiation of the electrocoated cathode substrate to form a fully-cured electrodeposited coating on the cathode substrate.

REFERENCES:
patent: 3682814 (1972-08-01), Gilchrist
patent: 3708413 (1973-01-01), Kehr
patent: 3954587 (1976-05-01), Kokawa
Journal of Paint Technology, vol. 44, No. 571 (Aug. 1972), pp. 33-36.

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