'processes for cleaning dirty metal surfaces and for preparing an alkoxylated polyethylenimine, alkoxylated polyethylenimine, aqueous composition, and use of at least one alkoxylated polyethylenimine'.

摘要

The invention relates to the process for cleaning dirty metal surfaces, characterized in that such cleaning is performed using a composition comprising at least one alkoxylated polyethylenimine (b) with a polydispersibility q = mw / mn of at least 3.5 and an average molecular weight mw in the range 2,500 to 1,500,000 g / mol.