| 摘要 |
An aqueous coating composition comprises, as resinous vehicle, (1) an aqueous composition containing resin particles obtained by polymerizing at least one ???,???-ethylenically unsaturated monomer in an aqueous medium and in the presence of an aqueous resin (A) with the help of an organic initiator, and (2) an aqueous resin (B) having a water tolerance of 4 or more and a surface tension of 1% aqueous resin varnish of 51 dyne/cm or less, the solid weight ratio of said resin particles to the total aqueous resins (A)+(B) being 70-1:30-99. The monomer may be in admixture with a hydrophobic solvent and/or a hydrophobic resin during the polymerization. The coating composition has excellent storage stability and application characteristics and is capable of forming a coating with excellent film properties, and hence is particularly useful as a top coat for automobile bodies and the like. |
