FIELD: textiles, paper.
SUBSTANCE: proposed easy dyeable wholly aromatic polyamide meta-type fibre is obtained by using an aqueous solution containing the amide solvent in a concentration of from 45 to 60 wt % at the coagulation stage. The coefficient of plastifying stretching of the fibre at the stage of plastifying stretching is in the range from 3.5 to 4.5. The temperature of dry heat treatment of the washed fibres at the stage of dry heat treatment is in the range from 260 to 330°C and the residual solvent content in the said fibre is 0.05-0.1 wt %. The degree of dye extraction is 90-92.4%, the index of dyed fibre strength retention after immersion for 150 hours in a 20 wt % aqueous solution of sulfuric acid at 50°C is 65-73%.
EFFECT: fibre is easy dyeable completely.
1 tbl, 5 ex
