| 摘要 |
<p>An aqueous coating composition, comprising A) an aqueous anionic polyacrylate or polyurethane dispersion obtainable by dispersing 1) a polyacrylate resin, having functional groups selected from the group consisting of carboxylic acid groups, carboxylic anhydride groups or mixtures thereof in water in the presence of ammonia, or, 2) a fully reacted polyurethane resin, formed from the reaction of a glycol or polyol of polyester or polyether with a diisocyanate, and then neutralized with ammonia or other amine, and dispersed in water B) a phosphorous containing pigment C) additives selected from the group consisting of pigments, solvents, rust inhibitors, dispersants, surfactants or mixtures thereof. The coating composition is useful as a primer for metal substrates in combination with a waterborne basecoat to give a stable metallic effect.</p> |
