Patent ID: 7728072

Claim:
An epichlorohydrinamine polymer obtained by a process comprising: (a) reacting at least two different amines with at least one epichlorohydrin as an alkylating agent in water over a period which is sufficient for free alkylating agents to be no longer detectable, resulting in a reaction mixture (I); (b) adding at least one acid and to the reaction mixture (I) until the pH of the reaction mixture (I) is from 4 to 10, resulting in a reaction mixture (II), wherein the at least two different amines are selected from the group consisting of benzylamine; piperazine; methylbis(3-aminopropyl)amine; methylbis(2-aminoethyl)amine; N-(2-aminoethylpiperazine); N-aminoethylpiperazine; 4,7-dimethyltriethylenetetraamine; dimethylaminopropylamine; and and wherein the ratio of the at least two different amines to the at least one epichlorohydrin is from 0.8:1.2 to 1.2:0.8.