Hardener component for stoving paint binders and process for...

Details Hardener component for stoving paint binders and process for... Hardener component for stoving paint binders and process for...

C - Chemistry, Metallurgy

09

D

402/510, 260/470

C09D 131/00 (2006.01) C08G 59/42 (2006.01) C08G 61/00 (2006.01) C09D 5/44 (2006.01) C09D 133/00 (2006.01) C09D 163/00 (2006.01)

Patent

CA 1285284

ABSTRACT OF THE DISCLOSURE The invention discloses crosslinking components for hydroxy and/or primary and/or secondary amine groups containing cationic rosins which can be used as binders for stoving paints, particularly for cathodically depositable electrodeposition paints. The crosslinking components are obtained through partial transesterification or transamidation of oligomeric KNOEVENAGEL- reaction products of C-H-active esters and carbonyl compounds of the formula: Image (I) wherein X is -COOR, -CN or -COCH3, R is an alkyl radical with from 1 to 8 carbon atoms, R1 is a hydrogen atom or an alkyl radical, and n is a factor multiplying the unit to a molecular weight of between about 300 and about 6000. The products can also be obtained through partial transesterification or transamidation of the C-H-active esters of the formula X-CH2-COOR and subsequent KNOEVENAGEL-reaction.

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