Process for producing crosslinking components for paint binders

Details Process for producing crosslinking components for paint binders Process for producing crosslinking components for paint binders

C - Chemistry, Metallurgy

07

C

402/31, 400/5003

C07C 69/34 (2006.01) C08F 22/14 (2006.01) C08G 16/02 (2006.01) C08G 59/42 (2006.01) C08G 63/00 (2006.01) C09D 5/44 (2006.01)

Patent

CA 1224214

ABSTRACT OF DISCLOSURE A process for producing improved crosslinking com- ponents for paint binders which can be crosslinked through transesterification is described. The process is charac- terized in that an ester of malonic or cyano-acetic acid or aceto-acetic acid is reacted in a KNOEVENAGEL-reaction with a carbonyl compound, preferably with formaldehyde, and the reac- tion products are polymerized, optionally utilizing free- radical initiators, to provide a polymer having a molecular weight of between about 300 and 6000. The crosslinking com- ponents prepared according to the invention provide an unsapon- ifiable base structure and permit the preparation of products with high functionality. The crosslinking components are pre- ferably utilized in binder systems for cathodically deposi- table paints.

458550

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