申请人:BASF Corporation
公开号:EP0189729A2
公开(公告)日:1986-08-06
Cathodic electrodepositable resin compositions particu- lady adapted for use as film forming compositions in cathodic electrodeposition processes. The resin is the reaction product of a modified epoxy formed by reacting a polyepoxide with a water soluble or water miscible polyol, an excess of polyamine, and an aliphatic monoepoxide. The resin, when combined with a cross-linking agent and solubii- ized in an aqueous electrodeposition bath, is capable of depositing high build coatings in a short period of time with a low cross-linking temperature in a cathodic electrodeposition process. The resin compositions are salted with an acid and used as components of aqueous cathodic electrodeposition baths.
阴极电沉积树脂组合物特别适用于阴极电沉积工艺中的成膜组合物。这种树脂是一种改性环氧树脂的反应产物,它是由聚环氧化物与水溶性或水混溶性多元醇、过量的多胺和脂肪族一环氧化物反应形成的。当这种树脂与交联剂结合并溶解在水性电沉积槽中时,能够在阴极电沉积工艺中以较低的交联温度在短时间内沉积出高密度的涂层。这种树脂组合物用酸盐化,用作水性阴极电沉积槽的成分。