Cleaning compositions with polyalkanolamines

A cleaning composition which comprises a surfactant system and a polyalkanolamine polymer obtained by a process comprising step a), wherein

• a) condensing component a1), which is triethanolamine,
• wherein the sum of the amount of a1) is 100 wt. % in relation to the sum of the amount of all monomers employed in the condensation according to step a) in order to obtain a polyether having remaining hydroxyl groups and optionally remaining secondary amino groups, wherein the condensation in step a) occurs in the presence of 0.1% to 1% by weight of phosphoric acid at a temperature of from 180 to 240° C., wherein the condensation product has a viscosity in the range of 3,000 to 10,000 mPa S and has a number average molecular weight of from 1,000 to 15,000 g/mol, wherein the hydroxyl number of the resulting condensation products is from 300 to 1,000 g/mol, and
• wherein the polyalkanolamine polymer is not alkoxylated.