Cationic electrodeposition paint composition containing colloidal silica-containing gelled particulate

A cationic electrodeposition paint composition, comprising:

• an amine-modified epoxy resin;
• a blocked isocyanate;
• a nonionic emulsified and dispersed acrylic resin, said acrylic resin being within a range from 5 to 30% by weight in resinous solid content relative to a total resin content of the paint composition;
• a colloidal silica-containing gelled particulate, said gelled particulate being within a range from 10 to 30 PHR in solid content in the paint composition, said colloidal silica-containing gelled particulate being formed by dispersing a mixture of an acrylic copolymer having a hydrolyzable alkoxysilane group and a cationic group and cationic acidic colloidal silica in water to carry out a cross-linking reaction;
• and
• an alkyltin ester compound of an aliphatic carboxylic acid, said alkyltin ester compound being within a range from 0.1 to 10 PHR in solid content in the paint composition.