Corrosion resistant, low temperature cured cathodic electrodepos

Details Corrosion resistant, low temperature cured cathodic electrodepos Corrosion resistant, low temperature cured cathodic electrodepos

1987-08-28

1989-10-10

Kalafut, Stephen J.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

524901, C05D 1300

Patent

active

048729612

ABSTRACT:
Cathodic electrodepositable coating compositions comprising an aqueous dispersion of (1) at least one cationic epoxy-based resin, (2) at least one blocked isocyanate crosslinker, and (3) a solvent system containing one or more organic solvents are improved by (a) employing a blocked isocyanate crosslinker which deblocks at a temperature of less than about 160.degree. C., and (b) employing as the solvent system, one which is substantially free of any organic solvent which will react with isocyanate groups at the temperature employed to cure said coating.

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