Crosslinking Components For Electrocoat Compositions, Electrocoat Compositions, And Processes For Forming Layer Of Electrocoat Composition On Surface Of Substrate

A crosslinking component for electrocoat compositions is provided. The crosslinking component contains a blocked polyisocyanate. The blocked polyisocyanate includes at least three blocked isocyanate groups. A blocking agent for the blocked polyisocyanate contains from about 25 to about 75 mol % alcohols (A) comprising 4 carbon atoms or less, and from about 25 to about 75 mol % alcohols (B) comprising 5 carbon atoms or more and containing one or more ether groups. The electrocoat composition containing the crosslinking component and a process for forming a layer of an electrocoat composition on a surface of a substrate also are provided. 提供了电泳涂装组合物的交联组分。该交联组分包含封闭多异氰酸酯。该封闭多异氰酸酯包括至少三个封闭异氰酸酯基团。用于该封闭多异氰酸酯的封闭剂包含约25mol％至约75mol％的包括4个或更少碳原子的醇(A)；和约25mol％至约75mol％的包括5个或更多碳原子且包含个或多个醚基团的醇(B)。还提供了包含该交联组分的电泳涂装组合物和用于在基材的表面上形成电泳涂装组合物的层的方法。