Aqueous dispersion type thermosetting coating composition

An aqueous dispersion type thermosetting coating composition comprising

• (A) 100 parts by weight of a thermosetting resin powder having an average particle size of 5 to 50.mu. comprising
• (i) the thermosetting resin having an acid value of 5 to 30,
• (ii) a crosslinking agent,
• (iii) 1 to 8% by weight based on the thermosetting resin of at least one reactive flow adjusting agent selected from the group consisting of
• (I) compounds having an average molecular weight of 1,000 to 2,500 and represented by the following general formula:
• HO--(CH.sub.2).sub.n O].sub.m H
• wherein n is an integer of from 2 to 40 and m is an integer of from 2 to 55, and (II)
• r[(o--ch.sub.2 --ch.sub.2 --ch.sub.2 --ch.sub.2 --ch.sub.2).sub.x OH].sub.y
• wherein x is an integer of from 2 to 10, y is an integer of from 2 to 4, and R stands for an aliphatic polyhydric alcohol residue, cyclic aliphatic polyhydric alcohol residue or aromatic polyhydric alcohol residue having 2 to 16 carbon atoms, and
• (iv) a pigment,
• (B) 60 to 200 parts by weight based on the thermosetting resin (A) of water,
• (C) 0.1 to 0.5 parts by weight based on the thermosetting resin (A) of a carboxyl group-containing organic polymeric thickener having an acid value of 200 to 500, and
• (D) at least one member selected from the group consisting of organic amines having a boiling point higher than 100.degree. C. and alkali metal hydroxide,
• the pH of the composition being in the range of from 7.5 to 9.0.