| abstract |
The application relates to compounds of the formula suitable for lowering the interfacial tension of oily phases against water where R for z = an 8 to 22 carbon atoms in the alkyl chain containing alkyl, aralkyl, alkylaryl or a 2 to 22 carbon atoms containing hydroxyalkyl radical and for z = 2 an 8 to 22 carbon atoms (aryl ) Represents alkylidene radical, R 'and R "are hydrogen or a CC 20 alkyl radical, where R' and R" are not simultaneously hydrogen and R 'and R "together have 8 to 20 carbon atoms, x a value of 10 to 40 and y assumes a value from 1.2 to 5, and processes for their preparation. |