Aqueous coating composition containing fine particles of water insoluble resin solution

Abstract

An aqueous coating composition comprising (A) an aqueous medium, (B) at least one water soluble or dilutable resin which has a water tolerance of 4 or more and whose 1% by weight aqueous solution shows a surface tension of 51 dyne/cm or less, and (C) fine particles of resinous solution of water insoluble resin in a hydrophobic solvent, the particles being uniformly dispersed in the combination of said aqueous medium (A) and the water soluble or dilutable resin (B) and having a mean diameter of 1.mu. or less, which is characterized in that the absolute value of difference in solubility parameter (.vertline..DELTA.Sp.vertline.) between said resinous solution and said water soluble or dilutable resin is within a range of .vertline..DELTA.Sp.vertline.<2. The present coating composition is excellent in storage stability and application characteristics, resulting a coating with excellent gloss and surface smoothness.

Dependencies are inferred from the claim text.