Process for electrodeposition of cationic thermosetting compositions
AssigneePPG Industries, Inc.
InventorsCarl C. Anderson, Joseph R. Marchetti
Life of this patent
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Abstract
This invention relates to cationic electrodepositable coating compositions comprising an aminoalkyl monomer, a reaction product comprising a half-blocked diisocyanate and an ethylenically unsaturated hydroxyl-containing monomer. Such compositions can be formulated in such a manner as to provide suitable coatings which when cured have a pleasing appearance, good flexibility, hardness, and resistance to the action of water and chemicals.
Claims5
A method of coating an electrically-conductive substrate which comprises passing electric current between an anode and a cathode in contact with an aqueous coating composition comprising an interpolymer of:
- a. from about 5 to about 50 percent by weight of a secondary or tertiary nitrogen-containing aminoalkyl monomer;
- b. from about 5 to about 80 percent by weight of reaction product comprising a half-blocked diisocyanate and an unsaturated hydroxyl-containing monomer;
- and
- c. from about 0 to about 90 percent by weight of at least one ethylenically unsaturated monomer.
Dependencies are inferred from the claim text.