| 摘要 |
PURPOSE:A water-dispersible coating whose dispersibility is improved without adding a dispersant and without detriment to the ability of forming water-resistant coated films, prepared by dispersing a powder coating having a specific particle diameter in a solution of a carboxyl group-containing, water-soluble resin. CONSTITUTION:A powder coating, average particle diameter of 1-100mu, is dispersed uniformly in a solution of a carboxyl group-containing, water-soluble resin. The mixing weight ratio of the powder coating (A) to the water-soluble resin (B) is 0.1-100. Examples of the powder coating include thermosetting acrylic resins, thermosetting epoxy resins and thermosetting polyester resins. Examples of the water-soluble resin include polybutadiene resins, alkyd resins, maleinized oil resins, epoxy resins anc acrylic resins. When said powder coating consists of more than one powder coating, as in the case of waste powder coatings, unevenness in color or a difference in color tone sometimes happens. But black coated films having a consatnt color tone are always obtained by the addition of a proper amount of carbon black.
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