CATIONIC ELECTRODEPOSITION COATING COMPOSITION

摘要

The present invention provides a cationic electrodeposition coating composition which can provide an electrodeposition coating film having low specular gloss and excellent finished appearance. The present invention relates to a cationic electrodeposition coating composition comprising a cationic emulsion (A) which comprises (a) a cationic epoxy resin and (c) a blocked isocyanate curing agent, and a cationic emulsion (B) which comprises (b) at least one resin selected from the group consisting of a cation-modified acrylic resin and a cationic epoxy resin other than the cationic epoxy resin (a) and (d) a blocked isocyanate curing agent, wherein a difference Deltadelta_A-B between a solubility parameter delta_A of a resin component in the cationic emulsion (A) and a solubility parameter delta_B of a resin component in the cationic emulsion (B) is within a range of from 0.5 to 1.5, and a difference DeltaT_A-B between a curing-initiation temperature (T_A) of the cationic emulsion (A) and a curing-initiation temperature (T_B) of the cationic emulsion (B) is within a range of from 20° C. to 60° C.