METHOD FOR DYEING OF FIBROUS MATERIALS Russian patent published in 2007 - IPC D06B3/00 

FIELD: textile industry, in particular, process for dyeing of fibrous materials, more particular, protein and polyamide filaments with acidic and acidic metal complex dyes.

SUBSTANCE: method involves dividing bath into two zones by means of partition having properties of fine filter for water; introducing anode into larger zone and cathode into smaller zone; adding into water dye in an amount of 20-60 g/l, sulfite in an amount of 5-30 g/l, powder of amphoterous aluminosilicates: montmorillonite, beidellite, nontronite, kaolinite (anauxite), halloysite, talc in an amount of 1-30 g/l, each of said components or mixture thereof; holding fibrous materials in anode zone at constant voltage U=5-220 V on electrodes at water boiling temperature while providing water and fibrous material circulation using machined washing process during 0.3-0.6 hours; discharging from bath and squeezing filaments.

EFFECT: increased efficiency, reduced dyeing time, improved safety equipment conditions, and reduced costs for carrying out dyeing process.

1 dwg