Levelling agent for printing and pad dyeing of polyamide fabrics - contg. polyglycol ether! sulphate; fatty acid di:ethanolamide(s), alkanolamine(s), aliphatic alcohol(s) and organic acid donor(s)

摘要

In a process for printing or pad dyeing polyamide fibre materials with acid- or metal complex dyes, the material is treated with printing pastes or padding baths contg. a levelling agent mixt. comprising (a) alkyl- or alkylarylpolyglycolethersulphates based on fatty alcohol or alkylphenols; (b) condensn. prods. of diethanolamine and fatty acids; (c) low alkanolamines; (d) low aliphatic alcohols and (e) acid donors based on organic halogen cpds. which react with water at elevated temps. to release a hydrogen halide. The material is subsequently steam fixed, washed off and dried. Use of the levelling agents overcomes the 'grey veil' effect often encountered when printing or pad dyeing of polyamide woven, non-woven, knitted and tufted fabrics and floor covering materials, etc., with acid or metal complex dyes.