| abstract |
Procedure for cleaning soiled metal surfaces characterized in that such cleaning is carried out using a composition comprising at least one alkoxylated polyethyleneimine (B) with a polydispersity Q = Mw / Mn in the range of from 3.5 to 10 and a molecular weight average Mw in the range of from 2,500 to 1,500,000 g / mol, in which said alkoxylated polyethyleneimine (B) contains main structure and alkylene oxide units in a weight ratio in the range of from 1: 2 to 1: fifty. |