Amphiphilic Water-Soluble Alkoxylated Polyalkylenimines With an Internal Polyethylene Oxide Block and an External Polypropylene Oxide Block

摘要

Amphiphilic water-soluble alkoxylated polyalkylenimines of the general formula I in which the variables are each defined as follows: R are identical or different, linear or branched C₂-C₆-alkylene radicals; B is a branch; E is an alkylenoxy unit of the formula R¹ is 1,2-propylene, 1,2-butylene and/or 1,2-isobutylene; R² is ethylene; R³ is 1,2-propylene; R⁴ are identical or different radicals: hydrogen; C₁-C₄-alkyl; x, y, z are each from 2 to 150, where the sum of x+y+z means a number of alkylenimine units which corresponds to an average molecular weight M_w of the polyalkylenimine before the alkoxylation of from 300 to 10 000; m is a rational number from 0 to 2; n is a rational number from 6 to 18; p is a rational number from 3 to 12, where 0.8<=n/p<=1.0 (X+Y+Z)^1/2; and quaternization products thereof.