DYEING METHOD OF TEXTILE MIXED MATERIALS ON THE BASIS OF POLYACRYLONITRILE WITH THE USE OF INORGANIC MODIFIERS Russian patent published in 2012 - IPC D06P3/82 D06P3/74 

FIELD: textile.

SUBSTANCE: invention relates to the textile industry, to the area of dyeing and finishing production and concerns the dyeing method of mixed materials on the basis of polyacrylonitrile with the use of inorganic modifiers. In the process bath modifying aqueous solution of sulfuric acid, urea and sulphate of chromium (III) is prepared, after which the solution is heated to boiling and the yarn - mixed material on the basis of wool and polyacrylonitrile - is put into it. During the solution boiling, modification is carried out within one hour, after which acid dye is dissolved in the process bath and dyeing process is carried out for 1.5 hours. Then a double rinse is carried out, and further a standard drying is performed. The invention provides a one-step dyeing method of mixed textile materials.

EFFECT: reduction of time of the coloring process, reduction of energy costs and improvement of the dye selectiveness.

1 dwg, 1 dwg