Binder composition for cathodically depositable paints

Details Binder composition for cathodically depositable paints Binder composition for cathodically depositable paints

C - Chemistry, Metallurgy

08

L

400/4302

C08L 63/00 (2006.01) C09D 5/44 (2006.01) C09D 163/00 (2006.01)

Patent

CA 1157182

Abstract Binder combinations for the formulation of cathodic paints consist of blends of epoxy resins modified in various ways. Blends of (A) 40 to 80 % by weight of reaction products of epoxy acrylates with basic monoisocyanates (of toluylene diisocyanate and a dialkanol amine), (B) 5 to 30 % by weight of reaction products of epoxy amine adducts with unsaturated monoisocyanates (of toluylene diisocyanate and a hydroxyalkyl (meth)acrylate) and (C) an epoxy resin modified with a semi-ester of a dicarboxylic acid anhydride and an N- hydroxyalkyloxazolidine and an amine, are rendered water soluble through neutralisation of the basic groups. Component (C) to advantage may be used as grinding medium.

386618

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