Process for slop-padding textile cellulose material
AssigneeCiba-Geigy Corporation
InventorHeinz Abel
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Abstract
A novel process for the continuous dyeing of cellulose textile material with anionic substantive dyes is disclosed. The process consists initially in applying to the cellulose material an aqueous liquor which, in addition to the dye, contains (A) 2.5 to 15 g/l of an etherified N-methylolmelamine, (B) an acid catalyst and at least one of the components (C) an anionic surfactant, (D) a non-ionic surfactant and (E) an organic solvent which boils above 140.degree. C. The material is then dried, if desired, and subsequently subjected to a heat treatment. An increase in dye yield of 100 to 400% is obtained with this process in continuous dyeing, especially in a pad-thermofix process. The dyeings are level and have excellent wetfastness and lightfastness properties.
Claims26
A process for slop-padding textile cellulose material with an anionic substantive dye, which comprises applying to said material an aqueous liquor which, in addition to the dye, contains
- (A) 2.5 to 15 g/l of an etherified N-methylolmelamine,
- (B) an acid catalyst and at least one of the components
- (C) an anionic surfactant,
- (D) a non-ionic surfactant and
- (E) an organic solvent which boils above 140.degree. C., and subsequently subjecting the material to a heat treatment.
An aqueous dye liquor for padding textile cellulose material which comprises at least one anionic substantive dye, a preparation containing
- (A) 2.5 to 15 g per liter dye liquor of an etherified N-methylolmelamine and at least one of the components
- (C) an anionic surfactant,
- (D) a non-ionic surfactant and
- (E) an organic solvent which boils above 140.degree. C.,
- and an acid catalyst.
Dependencies are inferred from the claim text.