Process for dyeing naturally occurring or synthetic polyamide fibres
AssigneeCiba-Geigy Corporation
InventorsKlaus Hannemann, Franz Gruner, Martin Jollenbeck, Jorg Binz
Life of this patent
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Abstract
A process for dyeing textile materials of naturally occurring and synthetic polyamide fibres, in which dyeing is carried out at the boiling point of the dyebath during a short dyeing time which is therefore gentle on the fibres, and level dyeings having good fastness properties are obtained (high temperature rapid dyeing process). The dyeing process is carried out with dyebaths with comprise specific surfactants. A high degree of exhaustion of the dye liquors is achieved, and dyeing from static baths is thus rendered possible.
Claims16
A process for dyeing a textile material composed of naturally occurring or synthetic polyamide fibres, which process comprises
- (a) introducing the textile material into an aqueous dyebath, which dyebath comprises an anionic dye, a surfactant and optionally other dyeing assistants and acids,
- (b) heating the dyebath to the boiling point,
- (c) dyeing the textile material for 10 to 20 minutes at the boiling point,
- (d) cooling the exhausted dyebath to from 50.degree. to 90.degree. C, and
- (e) subsequently removing the dyed textile material from the dyebath;
- wherein the surfactant comprises at least one compound selected from the group consisting of component (I) and component (III);
- wherein component (I) is a compound of the formula ##STR54## in which R is an aliphatic radical having 4 to 24 carbon atoms, R.sub.1 is alkylene having 2 to 4 carbon atoms, X.sub.1 is hydrogen or phenyl, X.sub.2 is hydrogen or phenyl, X.sub.1 and X.sub.2 differing from one another, and m.sub.1 is a number from 2 to 80, or ##STR55## in which R is an aliphatic radical having 4 to 24 carbon atoms, R.sub.1 is alkylene having 2 to 4 carbon atoms, one of the radicals Y.sub.1 or Y.sub.2 is benzyloxymethylene or phenethyloxymethylene and the other is hydrogen, and m.sub.1 is a number from 2 to 80, or
- R-O-(R.sub.1 -O).sub.n -CONH-R.sub.2 ( 1d),
- in which R is an aliphatic radical having 6 to 24 carbon atoms, R.sub.1 is alkylene having 2 to 4 carbon atoms, R.sub.2 is alkyl having 3 to 5 carbon atoms, and n is a number from 4 to 20, and (R.sub.1 -O).sub.n is n identical or different radicals (R.sub.1 -O), or
- R-O-(R.sub.1 -O).sub.n -W.sub.1 ( 1f),
- in which R is an aliphatic radical having 4 to 24 carbon atoms, R.sub.1 is alkylene having 2 to 4 carbon atoms, W.sub.1 is C.sub.1 -C.sub.4 alkyl and n is a number from 2 to 60, or
- R-O-(R.sub.1 -O).sub.n.sbsb.1 -CH.sub.2 -COOH (1g),
- in which R is an aliphatic radical having 4 to 24 carbon atoms, R1 is alkylene having 2 to 4 carbon atoms and n.sub.1 is a number from 2 to 20, or ##STR56## in which R' is an aliphatic radical having 8 to 24 carbon atoms, Z is a direct bond or (R.sub.1 -O) .sub.r.sbsb.1, R.sub.1 is alkylene having 2 to 4 carbon atoms, n.sub.5 is a number from 4 to 20 and r.sub.1 is a number from 4 to 20, or ##STR57## in which R' is an aliphatic radical having 8 to 24 carbon atoms, R.sub.1 is alkylene having 2 to 4 carbon atoms, m.sub.3 is a number from 1 to 20, n.sub.3 is a number from 1 to 20 and the sum m.sub.3 +n.sub.3 is 2 to 21, or ##STR58## in which R' is an aliphatic radical having 8 to 24 carbon atoms, R.sub.1 is alkylene having 2 to 4 carbon atoms, m.sub.3 is a number from 1 to 20, n.sub.3 is a number from 1 to 20, p.sub.1 is a number from 1 to 20 sum m.sub.3 +n.sub.3 +p.sub.1 is 3 to 22, and t is a number from 2 to 4, or ##STR59## component (HI) is a compound of the formula
- R-U.sub.1 -N (R.sub.30)-R.sub.32 -P.sub.1 ( 3),
- in which R is an aliphatic radical having 4 to 24 carbon atoms;
- U.sub.1 is a direct bond or a radical CO--NH--(CH.sub.2).sub.1-3 ;
- R.sub.30 and R.sub.32 independently of one another are C.sub.1 -C.sub.4 alkyl which is unsubstituted or substituted by hydroxyl and P.sub.1 is COOM or SO.sub.3 M, in which M is hydrogen, an alkali metal or ammonium.
An aqueous dyeing assistant which comprises a mixture of compounds of the formulae ##STR82## in which R.sub.5 is an alkyl or alkenyl radical having 12 to 22 carbon atoms, M is hydrogen, an alkali metal or ammonium, L.sub.1 is hydrogen or a radical SO.sub.3 M and m.sub.4 n.sub.4 are integers, the sum of m.sub.4 and n.sub.4 being 2 to 14, ##STR83## in which R", independently of R.sub.5, is as defined for R.sub.5, A is an anion, Q is a substituted or unsubstituted alkyl radical and p and q are integers, the sum of p and q being 20 to 50, and ##STR84## in which R", independently of R.sub.5, is as defined for R.sub.5, and x and y are integers, the sum of x and y being 80 to 140,
- and at least one compound of the formulae ##STR85## in which R is an aliphatic radical having 4 to 24 carbon atoms, R.sub.1 is alkylene having 2 to 4 carbon atoms, R.sub.2 is alkyl having 1 to 8 carbon atoms, m is a number from 2 to 50, (R.sub.1 -O).sub.m is m identical or different radicals (R.sub.1 -O), X.sub.1 is hydrogen or phenyl, X.sub.2 is hydrogen or phenyl, X.sub.1 and X.sub.2 differing from one another, one of the radicals Y.sub.1 and Y.sub.2 is benzyloxymethylene or phenethyloxymethylene and the other is hydrogen and m.sub.1 is a number from 2 to 80.
Dependencies are inferred from the claim text.