method for dyeing and processing development of polyester fibre

摘要

A process for preventing oligomer deposits on dyeings produced on textile material consisting of or containing polyester fibers, which process comprises applying to said material during or after dyeing a phthalic acid ester of the formula IMAGE (1) wherein R is alkyl or alkenyl of 6 to 22 carbon atoms, X1 and X2, is hydrogen or methyl and the other is hydrogen, Z is hydrogen or alkyl of 1 to 4 carbon atoms, and n is 1 to 4.