Patent ID: 7999035

Claim:
An amphiphilic water-soluble alkoxylated polyalkylenimine of formula I wherein R are identical or different, linear or branched C 2 -C 6 -alkylene radicals; B is a branch; E is an alkylenoxy unit of the formula R 1 is 1,2-propylene, 1,2-butylene and/or 1,2-isobutylene; R 2 is ethylene; R 3 is 1,2-propylene; R 4 are identical or different radicals: hydrogen; C 1 -C 4 -alkyl; x, y, z are each from 2 to 150, where the sum of x+y+z is 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.