Application of alkoxylated fatty alcohol or alkyl phenol containing locked end groups for the prevention of foaming in the sugar and yeast industries

摘要

The invention relates to the use of alkoxylation products of the formula I RO- (X1) n- (X2) m- (X3) pZ in which R is an alkyl radical having 6 to 22 carbon atoms, an alkylphenyl radical having 6 to 12 carbon atoms in alkyl , X1 and X3 ethylene oxide units, where n and p stand for a number from 0 to 15 and the sum n + p is at least 2, X2 propylene oxide and / or butylene oxide units, where m stands for a number from 0 to 15, and Z one straight-chain or branched alkyl radical with 1 to 4 carbon atoms, allyl or benzyl, with a cloud point 75 ° C as a foam suppressant in the sugar and yeast industry.