Cationic resins based on copolymers of butadiene and acrylonitrile

Abstract

Cationic resins are obtainable by reaction of A) a carboxyl-containing copolymer containing as comonomers a) 35-100 mol % of butadiene, b) 0-45 mol % of acrylonitrile, and c) 0-20 mol % of further comonomers, which has an average molecular weight of 500-50,000 and carries on average from 1.5 to 4 carboxyl groups per molecule, and B) a condensation product of d) a polybasic aliphatic C.sub.10 -C.sub.100 -carboxylic acid, and e) an amine which is polyfunctional in respect of primary and secondary amino groups, the amount of e) having been determined in such a way that, arithmetically, there are from 1.05 to 4 amino groups for every carboxyl group of d), with the proviso that the amount of B) is chosen in such a way that there are from 1.05 to 4 mol of amino groups per mole of the carboxyl groups present in A).

Dependencies are inferred from the claim text.