HIGH TEMPERATURE DYEING OF NATURAL NITROGEN CONTAINING MATERIAL * ESPECIALLY WOOL AND BLEND OF SAID WOOL AND SYNTHETIC FIBER * ESPECIALLY POLYESTER

摘要

The dyeing is carried out in an aqueous bath and with dyes conventional for these fibres, beyond the boiling point and in the presence of formaldehyde and of a fatty acid amide of the general formula (I): IMAGE where R = C10-C20-alkyl or -alkylene, R1 and R2 = H, (-CH2-CH2-O)nH, -(CH2)1-4-N(R3)(R4 ) or IMAGE where R3 and R4 = H or C1-C4-alkyl and n = an integer. When dyed according to this process, wool and its mixtures with polyester show high colour strength properties without a loss of the typical qualities of wool (softness etc.) and with significant improvement in its tearing resistance.