Cationic binders for water dilutable heat hardenable coating compositions

Abstract From the Canadian patent

Heat-hardenable synthetic resins which are water soluble upon partial or total neutralization comprising the reaction products of epoxy groups containing unsaturated diene polymers and amine compounds graft polymerized with alpha, beta-ethylenically unsaturated monomers which are free from epoxy reactive groups the homopolymers of the mono-, ners having a glass transition temperature of over 320°K. A process of preparing the heat-hardenable resins is also described. The synthetic resins can be employed as binders for cathodically depositable aqueous coating compositions to provide coatings which will cure at relatively low temperatures and relatively short curing times to provide smooth and …