Titanium dioxide pigment grind dispersion and paint

The invention relates to a titanium dioxide pigment grind dispersion and paint. The dispersion contains non-adsorbed titanium dioxide particles dispersed in an aqueous emulsion containing a mixture of (a) water-insoluble film-forming first polymer particles that adsorb to titanium dioxide particles, the first polymer particle amount in the emulsion being less than the saturation level of adsorption when another polymer is not present, (b) water-insoluble film-forming second polymer particles that do not by themselves form composite particles with titanium dioxide particles, the second polymer particle amount in the emulsion being sufficient to inhibit or interfere with adsorption of the first polymer particles to titanium dioxide particles, and (c) extender particles. The pigment grind dispersion has a titanium dioxide pigment volume concentration of about 25 to about 50 and a titania composite ratio of about 32 to about 60. 本发明涉及二氧化钛颜料研磨分散体和油漆，所述分散体包含分散在水性乳液中的未吸附二氧化钛粒子，所述水性乳液包含以下各项的混合物：(a)与所述二氧化钛粒子吸附的非水溶性成膜第