METHOD OF DYING ARAMID FIBRE Russian patent published in 2009 - IPC D06P3/04 D06P3/24 

FIELD: chemistry.

SUBSTANCE: invention relates to field of technology for obtaining dyed thermo- and fireproof aramid fibres and can be applied at textile decoration enterprises. Described is method for dying aramid fibre, which consists in preliminary processing of fibre in bath of composition, wt %: gelatin - 20-25, complex aluminium oxide based salt - 1-3, acetic acid - 3-4, water - the remaining part, after that aramid fibre is dyed with acid dyes in bath of composition, wt %: acid dye - 2.5-10, acetic acid - 3-4, water - the remaining part.

EFFECT: claimed method allows obtaining of even and intensive colours of wide colour gamut, resistant to washing and friction with saving of high physico-mechanical properties; in addition, method allows increasing of oxygen index and improving of work environment due to exclusion of toxic substances.

2 cl, 2 tbl, 18 ex