Catalyzed cationic paint binders
AssigneeVianova Kunstharz, A.G.
InventorsWillibald Paar, Johann Gmoser
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Abstract
Cationic paint binders, particularly binders of the type used in cathodic electrodeposition coatings which crosslink through transesterification, transamidation, transurethanization, or through the reaction of chain end double bonds catalyzed with a condensation product of a dialkyltinoxide and a compound carrying at least one hydroxyl group are described. The hydroxyl compounds are the aliphatic alcohols, phenols, alkanolamines, or the reaction products of primary amines with monoepoxy compounds. The catalysts of the invention provide very good stability and good compatibility in aqueous cationic paint materials.
Claims17
Process for catalyzing cationic paint binders crosslinkable through at least one of transesterification, transamidation, transurethanization, or reaction of chain end double bonds comprising adding to said binder, as a catalyst, a condensation product of a dialkyltinoxide and a compound carrying at least one hydroxyl group.
Cationic paint binders crosslinkable through at least one of transesterification, transamidation, transurethanization, or reaction of chain end double bonds in combination with, as a catalyst, a condensation product of a dialkyltinoxide and a compound carrying at least one hydroxyl group.
Dependencies are inferred from the claim text.