Binder which is rendered water-dilutable by protination with...

Details Binder which is rendered water-dilutable by protination with... Binder which is rendered water-dilutable by protination with...

C - Chemistry, Metallurgy

09

D

400/5805

C09D 5/44 (2006.01) C08G 59/42 (2006.01) C08G 59/58 (2006.01) C08G 81/00 (2006.01) C09D 163/00 (2006.01)

Patent

CA 1281831

Abstract of the Disclosure: Binders which are rendered water-dilutable by protonation with an acid, a process for their preparation and their use. These binders are obtainable by reacting a A) Reaction product of a a) carboxyl-containing component consisting of a a1) carboxyl-containing butadiene/acrylonitrile co- polymer having a molecular weight of from 500 to 8,000, if necessary as a mixture with a2) a dicarboxylic acid which differs from a1) and, if appropriate, a3) a monocarboxylic acid and b) a diprimary and/or primary/secondary amine, with the proviso that from 0.7 to 5 moles of the said amine are used per mole of carboxyl groups of component a), with one or more B) epoxy resins having a mean molecular weight from 300 to 6,000 and containing on average from 1.5 to 3.0 epoxide groups per molecule and, if required, C) an aliphatic or cycloaliphatic secondary amine. In combination with a crosslinking agent, they are useful as coating materials, in particular for cathodic electrocoating.

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