| 摘要 |
Textile materials made of polyester, triacetate, acetate or polyamide or mixtures thereof are printed by the discharge printing or discharge resist printing technique by using as discharging agent for disperse dyes a 3-aminoreductone of the formula <IMAGE> I where R1, R2 and R3 are identical or different and each is hydrogen, methyl or ethyl and R4 is linear or branched alkyl or alkenyl of from 1 to 20 carbon atoms, which may be monosubstituted or polysubstituted by hydroxyl, alkoxy of from 1 to 3 carbon atoms in the alkyl or acetoxy, or is a radical -(CH2-CH2-O)nH where n is from 1 to 10 and which may be etherified with alkyl of from 1 to 3 carbon atoms or esterified with acetyl, or R4 together with the N-atom is the radical of an aliphatic alpha - or beta -amino acid of from 2 to 15 carbon atoms, in which case the carboxyl group may be present in neutralized form as an alkali metal, alkaline earth metal or ammonium salt or in esterified form as a C1-c10-alkyl ester, or a mineral acid salt thereof.
|
