Nippon Paint Compnay, Ltd.

Jun Nozue

Takeo Kurauchi

Keizou Ishii

Atsushi Yamada

Shinichi Ishikura

A clear top coat composition comprising a film-forming acrylic polymer having a plurality of cross-linkable functional groups, a volatile organic liquid diluent capable of carring the film-forming polymer, a cross-linking agent for the film-forming polymer, and internally cross-linked polymer microgel particles stably dispersed in the mixture of the film-forming polymer, the diluent and the cross-linking agent. The composition is applied wet-on-wet a metallic color base coat having a similar composition containing the microgel particles and a metallic flake pigment, and cured simultaneously with the base coat.

Multilayer coating having a clear top coat formed on a color base coat

A dispersion stabilizer for dispersing solid particles into a liquid medium, which comprises resin particles bearing a zwitter-ionic group in the molecule, said resin particles each having substantially an average particle size of not more than 1500 .ANG. when measured by electron microscopic observation.

Dispersion stabilizer and its use

A clear or colored top coating composition containing internally cross-linked microgel particles is disclosed. The microgel particles are produced by emulsion-polymerizing a monomer mixture of ethylenically unsaturated monomers including at least one cross-linking monomer and have a refraction index which is equal or close (.ltoreq.0.05) to that of a surrounding film-forming polymer fully cured with a cross-linking agent.

Growing community of inventors

Hirakata, Japan

Jun Nozue