TEXTILE FIBER AND FABRIC DYEING METHOD Russian patent published in 2001 - IPC

FIELD: textile industry. SUBSTANCE: method involves using raw plant extraction powder product, larch wood extraction product containing 65-75 wt.% of quercetin and 25-35 wt.% of lignocarbohydrate complex. During dyeing procedure, mentioned product is consumed in an amount of 0.2-0.4 wt.% of absolutely dry fiber. Treatment of textile fiber and fabric with natural dye is performed in the presence of inorganic salt selected from the group containing sodium chloride, ferrous chloride, aluminum sulfate, sodium carbonate, potassium bichromate or lead sulfate, and used in an amount of 2 wt. % of absolutely dry fiber and at temperature of 60-100 C. Method may be used for bulk dyeing of textile fibers and fabric as well for surface dyeing. EFFECT: improved uniformity and high purity tint. 3 cl, 1 tbl, 5 ex