Binders water-dilutable by protonation with acid

Details Binders water-dilutable by protonation with acid Binders water-dilutable by protonation with acid

C - Chemistry, Metallurgy

08

G

400/5916

C08G 59/50 (2006.01) C08G 81/02 (2006.01) C09D 5/02 (2006.01) C09D 5/44 (2006.01) C09D 147/00 (2006.01) C09D 163/00 (2006.01)

Patent

CA 1310440

Abstract of the Disclosure: A binder which is water- dilutable on protonation with acid and obtainable by a reaction of A) an epoxy resin having an average molecular weight of from 300 to 6,000 and on average from 1.5 to 3.0 ep- oxide groups per molecule and B) from 20 to 80 mol%, based on the amount of epoxide groups present in epoxy resin (A), of one or more secondary amine and/or alkanolamine of up to 40 car- bon atoms and subsequent reaction with C) a copolymer which is based on butadiene and acrylo- nitrile and contains primary and/or secondary amino groups, the amount of (C) being so dimensioned that the number of primary and secondary amino groups cor- responds to from 1 to 50 mol% of the epoxide groups present in the epoxy resin (A), and also D) with one or more primary and/or secondary amine to convert any epoxide groups still present, is used in particular for cathodic electrocoating.

551580

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