CS254300B1 - Dye preparation - Google Patents

Abstract

Dye preparation for dyeing wool, silk and polyamide materials, consisting of a synergistic mixture by weight of 65 to 75% of a 2:1 chromium complex dye of the general formula I, where A^ represents the group -NO2 or -SC>3Na and A2 represents the group -SOgNa or NO2, 1 to 3 4 surfactants of the general formula II, where R represents C10 to C^g alkyl and X~ a halogen anion and 22 to 34% of fillers, such as simple inorganic electrolytes, sugars, urea and oily water-soluble substances reducing the dustiness of the final dye preparations.

Description

The present invention relates to dye preparations for dyeing woolen, silk and polyamide textile materials, comprising a synergistic blend of symmetrical 2: 1 metal-complex dyes based on chromium complexes of constitution I

where A ^ is -NC ^ or -SO2Na, is -SO2Na or -NC2 with cationic quaternary salts of constitution II

CH, • OH

CH, (II) wherein R is an alkyl residue with a carbon chain length up to C _1Q and X ^- is halogenanion and fillers such as simple inorganic electrolytes, sucrose, dextrose, urea and liquid water-insoluble substance reducing the dusting of the final dye product.

The dye compositions of the present invention are novel and allow the rational use of dyes and dyeing apparatuses, substantially increasing the degree of use of the dyeing bath while reducing the amount of ecologically degrading colored organic waste.

The dye preparation according to the invention can advantageously be prepared by mixing said components I and II in the liquid state prior to spray drying or fluidized bed drying, the optimum content of components I in the final dye preparation being in the range of 65-75% by weight; % by weight and fillers 22 to 34% by weight.

The cationic surfactants of constitution II may advantageously be used to emulsify the oily powders of the final product, which may be mineral and synthetic oils, silicone oils or dodeoylbenzene.

The advantage of the dye preparation according to the invention is the possibility of its application in both printing and drawing dyeing processes on all types of dyeing apparatus, where besides shortening of dyeing time it is possible to achieve highly stable dyeing of the substrate without necessity of application of other textile auxiliaries. use of dye bath. *

The invention is further illustrated by the following non-limiting example.

Example

Reaction mixture containing 70 parts by weight of 2: 1 unsymmetrical metal-complex dye of constitution

is mixed in the liquid state with 2.5 parts by weight of constitutional II surfactant in the form of an aqueous solution and 30 parts of sodium sulfate. The solution is spray dried at an inlet / outlet temperature ratio of 200/90 ° C. The resulting product can be directly used for coloring the above textile materials to brown shades from neutral tinting baths containing ammonium sulfate.

Claims (1)

SUBJECT OF THE INVENTION Dye preparation for dyeing woolen, silk and polyamide materials characterized by containing a synergistic mixture of unsymmetrical 2: 1 metal-complex dyes based on chromium complexes of constitution I where A ^ is a group -SO ^ On them salts of constitution II or “NC> 2 with cationic quaternary surfactant CH ₂ CHCH ₂ OH N - CH ₂ CH ₂ OH (II) wherein R is an alkyl moiety with a carbon chain length of up to C 1-6 and X is a haloanion and fillers such as simple inorganic electrolytes, sugars, urea and oleaginous substances. The color components I are in the range of 65 to 75% by weight, the component II in the range of 1 to 3% by weight and the content of the above-mentioned fillers in the range of 22 to 34% by weight.