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22. 发明授权

US6165338A Cathodic electrocoat having a carbamate functional resin 有权
标题翻译：具有氨基甲酸酯官能树脂的阴极电泳
公开(公告)号：US6165338A
公开(公告)日：2000-12-26
申请号：US217917
申请日：1998-12-21
申请人： Timothy S. December , Walter H Ohrbom , Gregory G. Menovcik
发明人： Timothy S. December , Walter H Ohrbom , Gregory G. Menovcik
IPC分类号： C09D5/00 , C08F2/58 , C08F212/14 , C08F220/10 , C08F220/34 , C08F220/36 , C08L61/32 , C09D5/44 , C09D133/06 , C09D133/14 , C25D13/22 , C25D13/04
CPC分类号： C25D13/22 , C08F212/14 , C08F220/36 , C08L61/32 , C09D5/4407 , C09D133/062 , C08L2666/14
摘要： The invention provides a polymer (a) having a polymer backbone having appended thereto at least one carbamate functional group, the polymer represented by randomly repeating units according to the formula: ##STR1## R.sub.1 represents H or CH.sub.3, R.sub.2 represents H, alkyl, or cycloalkyl, L represents a divalent linking group, A represents repeat units comprising at least one repeat unit having a pendant cationic salting group, x represents 10 to 90 weight %, and y represents 90 to 10 weight %. The invention further provides a cathodic electrocoat coating composition comprising an aqueous dispersion of a polymer (a) and (b) a compound having a plurality of functional groups that are reactive with said carbamate groups, wherein the repeat units A of polymer (a) having a pendant cationic salting group are salted with an acid. Finally, the invention provides a cathodic electrodeposition method requiring 1) immersing a conductive substrate in a coating composition comprising, in an aqueous medium, a polymer (a) and (b) a compound having a plurality of functional groups that are reactive with said carbamate groups, 2) applying a voltage between an anode and the conductive substrate, and 3) removing the substrate from the coating composition.
摘要翻译：本发明提供了一种聚合物（a），其具有附着至少一个氨基甲酸酯官能团的聚合物主链，所述聚合物由无规重复的下式表示：R1表示H或CH3，R2表示H，烷基或环烷基，L 表示二价连接基团，A表示包含至少一个具有侧阳离子盐析基团的重复单元的重复单元，x表示10至90重量％，y表示90至10重量％。本发明还提供一种阴极电泳涂料组合物，其包含聚合物（a）的水性分散体和（b）具有多个与所述氨基甲酸酯基团反应的官能团的化合物，其中聚合物（a）的重复单元A具有阳离子盐水组合物用酸盐化。最后，本发明提供了一种阴极电沉积方法，其需要：1）将导电性基材浸渍在涂料组合物中，所述涂料组合物在水性介质中包含聚合物（a）和（b）具有多个与所述氨基甲酸酯反应的官能团的化合物 2）在阳极和导电性基体之间施加电压，3）从涂料组合物中除去基材。

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