Patent ID: 7919451

Claim:
A cationic polycondensation product obtained by condensation of (A2) at least one mixture of (A1) at least one noncyclic amine prepared by reaction of (A1a) at least one mono(N,N-dialkylaminoalkyl)amine with (A1b) at least one bifunctional compound selected from the group consisting of urea, thiourea, a dialkyl carbonate, an aliphatic and aromatic dicarboxylic acid, and an aliphatic and aromatic diisocyanate, in a molar ratio from 1.2:1 to 2.1:1, and (A3) at least one cyclic amine, in a molar ratio from 10:1 to 1:10 with (B) at least one bifunctional compound selected from the group consisting of an alkylene dihalide, dihaloalkyl ether, halomethyloxirane, and a bisepoxide, in a molar ratio (B) to (A2) from 0.6:1 to 1.3:1.