Curable coating compositions comprising self-crosslinkable components

摘要

This invention relates to an electrodeposition process which comprises electrodepositing onto a conducting substrate a coating composition comprising a self-crosslinking polymeric resin which has an average of at least two pendent hydroxy functional groups and an average of at least two pendent ester groups of the general formula: (I) wherein R1 and R2 are independently hydrogen, alkyl, substituted alkyl or aryl groups; n is from about 1 to about 5; X is nitrogen, sulfur or phosphorus; and when X is nitrogen or phosphorus, R3 is hydrogen, lower alkyl, or an aryl group; R4 is lower alkyl or an aryl group; and when X is sulfur, R4 is nothing and R3 is either hydrogen, lower alkyl or aryl.