Patent ID: 7776158

Claim:
An aqueous composition comprising, based on the total composition, at least 3% by weight of a nonionic surfactant of formula I: wherein R 1 represents hydrogen, and R 2 , independently of R 1 , represents an alkyl radical having 1 to 18 C atoms, and the sum of the C atoms present overall in R 1 and R 2 is between 6 and 18, and R 3 represents an alkyl radical having 4 to 18 C atoms, and R 4 represents hydrogen or an alkyl radical having 1 to 6 C atoms and a mean degree of ethoxylation n is a number from 1 to 30 and a mean degree of propoxylation m is a number from 0 to 5; and substantially no anionic surfactant is present.