FIELD: textile industry.
SUBSTANCE: invention relates to technology of fabricating dyed polyaramide fiber, in particular to a method of dyeing metha-para-aramidebenzimidazole fibers to be employed in textile industry. Method comprises preliminary treatment with mixture containing solvent selected from dimethylacetamide, dimethylformamide, dimethylsulfoxide, and their mixture, and neutral agent selected from water, lower alcohol, and their mixture, at volume ratio of the two mixture components between 10:90 and 90:10, at 18-20°C for 5 to 60 min followed by (optional) washing and dyeing with disperse or cationic dyes in periodical mode at 95-100°C.
EFFECT: achieved uniform and intensive colorations resistant to washing and wet rubbing, dry-cleaning, water, and perspiration without loss in high physico-mechanical and fireproofing properties of dyed material.
5 cl, 1 tbl, 15 ex
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