LOW-FOAM EMULGATOR SYSTEM AND EMULSION CONCENTRATE CONTAINING THE SAME

摘要

Low-foam emulsifier system consisting of: (a) ethoxylates/propoxylates of fatty alcohols having 8 to 18 carbon atoms in the alcohol with 2 to 6 ethylene oxide units and 4 to 8 propylene oxide units; and (b) fatty alcohols or the distillation residues thereof and/or fatty alcohol propoxylates having 12 to 24 carbon atoms in the alcohol and 0 to 3 propylene oxide units; in a ratio, by weight, of (a): (b) of 1:0.3 to 0.3:1. A corrosion protection and emulsifier system additionally containing corrosion-inhibiting carboxylic acids together with a water-miscible emulsion concentrate obtainable therefrom by the addition of oil are also disclosed. Water-mixed emulsions are obtainable from this concentrate, which may be used as a cleaning, corrosion protection or cooling lubricant emulsion in metals processing.