Continuous dyeing and simultaneous finishing of textile materials using defoaming agent of polyoxyalkylene polysiloxane copolymer and hydrophobic silica

Abstract

A de-foaming agent comprising by weight about (a) 80 to 100 parts of a polyoxyalkylene-polysiloxane copolymer of the formula: [R.sup.1 Si(OSiR.sub.2).sub.n ].sub.m Z.sub.m-1 (OR.sup.2).sub.m+2, in which R represents an optionally halogen-substituted alkyl-group with up to 4 carbon atoms, R.sup.1 represents the substituent R or a phenyl radical, R.sup.2 represents a group of the composition ##STR1## Z represents the difunctional unit --O-- or ##STR2## and R.sup.3 denotes a hydrocarbon radical with up to 6 carbon atoms, R.sup.4 denotes independently from one another hydrogen or R.sup.3, n denotes a number between 3 and 40, m denotes a number between 1 and 15, x denotes a number between 0 and 68, y denotes a number between 0 and 52, x+y denotes a number between 1 and 68 and p denotes a number between 2 and 12, and (b) 0.5 to 20 parts of a hydrophobic silicon dioxide.

Dependencies are inferred from the claim text.