US 4,009,000 AGranted

Process for the dyeing or printing and simultaneous finishing of cellulose materials

AssigneeCiba-Geigy Corporation

InventorHermann Buhler

Life of this patent

Estimating the term…

Loading patent…

Abstract

A process for the dyeing or printing and simultaneous finishing of cellulose materials is described, in which process these materials are impregnated with an aqueous liquor comprising a specific dyestuff which contains at least one hydroxyalkyl radical or a cycloalkyl radical having at least one hydroxyl group, a synthetic resin-forming intermediate, formaldehyde or an agent releasing formaldehyde, an acid catalyst and, optionally, further additives, then dried, steamed or cold-stored, and finally subjected to a treatment at elevated temperature and, optionally, subsequently rinsed. Dyed cellulse materials are obtained which have very high dyestuff yields, and which are dyed and printed evenly and fast to light and to washing; the resulting finishing effect is not strong and hence the effect on the handle of the material less, a condition which is particularly desirable in the case of light fabrics and therefore of great advantage.

A process for dyeing or printing and simultaneously finishing cellulose materials, comprising the steps of impregnating the cellulose material with an aqueous liquor containing

a. 10 to 100 g/l of a dyestuff of the formula (W).sub.m-1 - D - [ A - X ].sub.n
wherein
W is an SO.sub.3 H group or a COOH group,
D is a chromophoric radical of a formazan, azomethine, nitro, azo, anthraquinone or phthalocyanine dyestuff,
A is a bridge member selected from the group consisting of a heterocyclic-aromatic radical, a substituted amino, carbonamido or sulphonamido radical, or an alkyleneaminocarbonyl radical, or a --SO.sub.2 -- or a --NHCO-- group,
X is a monohydroxyalkyl radical of 2 to 10 carbon atoms having at least 2 carbon atoms between the hydroxy group and the bridge member, and m and n are integers of 1 to 5,
b. 20 to 60 g/l of a water-soluble or water-dispersible synthetic-resin-forming intermediate selected from the group consisting of an aminotriazine-formaldehyde addition product, an oxydiaminotriazine-formaldehyde addition product, a dixoyaminotriazine- formaldehyde addition product, a triazone-formaldehyde addition product, a guanamine-formaldehyde addition product, a urea-formaldehyde addition product, a thiourea-formaldehyde addition product, an ethyleneurea-formaldehyde addition product, a dicyanodiamide-formaldehyde addition product, methylolmelamine, methylolurea, methylolethylene-urea at least partially etherified with a C.sub.1 -C.sub.5 -alkanol, methylolpropyleneurea at least partially etherified with a C.sub.1 -C.sub.5 -alkanol, methylolguanylurea at least partially etherified with a C.sub.1 -C.sub.5 -alkanol, methylolacetyleneurea at least partially etherified with a C.sub.1 -C.sub.5 -alkanol, and 4,5-dihydroxyimidiazolidone-2,
c. 5 to 30% of the weight of the dyestuff of formaldehyde or a water soluble polymeric form of formaldehyde, and
d. 1 to 50 g/l of an acid catalyst;
drying, steaming or cold-storing the impregnated material;
and finally heating the material to fix the dyestuff thereon.

8 more elements

Abstract

Claims16