Isoluble metal curing catalysts for thermosetting binder...

Details Isoluble metal curing catalysts for thermosetting binder... Isoluble metal curing catalysts for thermosetting binder...

C - Chemistry, Metallurgy

09

D

117/183, 402/3,

C09D 5/44 (2006.01) C09D 129/08 (2006.01) C09D 163/00 (2006.01) C09D 167/00 (2006.01) C09D 201/06 (2006.01)

Patent

CA 1182598

A B S T R A C T USE OF INSOLUBLE METAL CURING CATALYSTS FOR THERMOSETTING BINDER COMPOSITIONS Thermosetting binder composition for coating, comprising: (I) (1) A non-acidic resinous compound, saturated, molecular weight at least 900, alcoholic hydroxyl content at least 0.2 eq./100 g; (2) as cross-linking agent a non-acidic polyester of a polycarboxylic acid, having more than one beta-hydroxyl ester group per molecule, at least one of components (1) and (2) having an alcoholic hydroxyl function- ality of more than 2, and (II) as curing catalyst a transesterification-promoting metal compound which is insoluble in liquid hydrocarbons. The compositions can be used in solvent-based lacquers and paints, in coating powders, aqueous powder suspensions, in aqueous coating compositions for cathodic electrodeposition; for aqueous compositions component (I) (1) is prefer- ably an epoxy resin/amine adduct.

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