申请人:BASF COATINGS GMBH
公开号:US10208134B2
公开(公告)日:2019-02-19
The invention relates to aqueous, cationically stabilized primary dispersions comprising dispersed polymer particles having a Z-average particle diameter of 5 to 500 nm and which are obtainable by emulsion polymerization of at least one olefinically unsaturated monomer (A). The emulsion polymerization takes place in the presence of one or more emulsifiers (E) having the following general formula: R1—N(R2)(R3), where R1 is a moiety with 15 to 40 carbon atoms which contains at least one aromatic group and at least one aliphatic group, and which contains at least one functional group selected from hydroxyl groups, thiol groups, and primary or secondary amino groups, and/or has at least one carbon-carbon multiple bond, and R2 and R3, independently of one another, are the same or different aliphatic moieties containing 1 to 14 carbon atoms. The invention further relates to a method for producing the primary dispersions, and to coating agents which include the primary dispersions, and to the use of the primary dispersions for producing electrodeposition coatings, and also to conductive substrates coated with the coating compositions.
本发明涉及阳离子稳定的水性初级分散体,该分散体包含 Z 平均粒径为 5 至 500 nm 的分散聚合物颗粒,可通过至少一种烯烃不饱和单体(A)的乳液聚合获得。乳液聚合是在一种或多种具有以下通式的乳化剂(E)存在下进行的:R1-N(R2)(R3),其中 R1 是含有 15 至 40 个碳原子的分子,该分子含有至少一个芳香族基团和至少一个脂肪族基团,并含有至少一个选自羟基、硫醇基团、伯氨基或仲氨基的官能团,和/或具有至少一个碳-碳多键,R2 和 R3 相互独立,是相同或不同的含有 1 至 14 个碳原子的脂肪族分子。本发明还涉及一种生产初级分散体的方法,涉及包括初级分散体的涂层剂,涉及使用初级分散体生产电沉积涂层,还涉及涂有涂层组合物的导电基底。