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    • 2. 发明专利
    • Cationic electrodeposition coating material composition and its producing method
    • 阳离子电沉积涂料组合物及其制备方法
    • JP2009138126A
    • 2009-06-25
    • JP2007316873
    • 2007-12-07
    • Nippon Paint Co Ltd日本ペイント株式会社
    • HAYASHI YASUHIROABE YOTARO
    • C08F2/22C08F2/44C08G59/40C09D5/02C09D5/44C09D7/06C09D7/12C09D133/00C09D151/00C09D161/28C09D163/00C25D13/06
    • PROBLEM TO BE SOLVED: To provide a cationic electrodeposition coating material composition in which an acrylic resin component is made to exist stably in an amine-modified epoxy resin-containing emulsion so that an electrodeposition coating film to be formed exhibits surely functions such as a leveling function derived from the acrylic resin component and to provide a method for producing the cationic electrodeposition coating material composition. SOLUTION: The method for producing the cationic electrodeposition coating material composition includes; the first step of emulsifying an amine-modified epoxy resin (a), a thermosetting agent (b) and an acrylic monomer (c) to prepare a pre-emulsion; the second step of adding a polymerization initiator to the pre-emulsion and polymerizing the acrylic monomer (c) to obtain an acrylic resin-containing emulsion; and a step of mixing the emulsion obtained at the second step with pigment-dispersed paste to prepare the cationic electrodeposition coating material composition. A method for producing an emulsion for the cationic electrodeposition coating material composition includes: the first step of emulsifying the amine-modified epoxy resin (a), the thermosetting agent (b) and the acrylic monomer (c) to prepare the pre-emulsion; and the second step of adding the polymerization initiator to the pre-emulsion and polymerizing the acrylic monomer (c) to obtain the objective emulsion. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了提供一种阳离子电沉积涂料组合物,其中使丙烯酸树脂组分稳定存在于胺改性环氧树脂的乳液中,使得所形成的电沉积涂膜具有如下功能: 作为来自丙烯酸树脂组分的流平功能,并提供一种生产阳离子电沉积涂料组合物的方法。 解决方案:阳离子电沉积涂料组合物的制备方法包括: 乳化胺改性环氧树脂(a),热固性剂(b)和丙烯酸单体(c)的第一步骤以制备预乳液; 向预乳液中加入聚合引发剂并聚合丙烯酸单体(c)以获得含丙烯酸树脂的乳液的第二步骤; 以及将在第二步骤获得的乳液与颜料分散的糊料混合以制备阳离子电沉积涂料组合物的步骤。 阳离子电沉积涂料组合物乳液的制备方法包括:将胺改性环氧树脂(a),热固化剂(b)和丙烯酸单体(c)乳化的第一步骤以制备预乳液; 以及将聚合引发剂加入到预乳液中并使丙烯酸单体(c)聚合以获得目标乳液的第二步骤。 版权所有(C)2009,JPO&INPIT