公开(公告)号：GB855494A

公开(公告)日：1960-11-30

申请号：GB1892759

申请日：1959-06-03

Applicant: BASF AG

Inventor： BLUM ADOLF ,  WILHELM ERNST ,  DIETRICH WERNER ,  KUEPPERS WILHELM

IPC: D06P1/22

Abstract: In the dyeing of textile yarns with vat or sulphur dyestuffs on skein yarn or spray dyeing machines, improved results are obtained by employing as the reducing agent (a) an alkali-metal or ammonium salt of a linear or branched hydroxyalkyl sulphinic acid with 2-4 carbon atoms in which the hydroxyl group and the sulphinic acid group are attached to the same carbon atom or (b) a derivative of ammonia which contains at least once, directly attached to the nitrogen atom, the radical of an alkali-metal or ammonium salt of a linear or branched alkylsulphinic acid with 2-4 carbon atoms in which the nitrogen atom and the sulphur atom are attached to the same carbon atom, or a mixture of the two salts. Specified derivatives of ammonia are the reaction products of the alkali-metal or ammonium salts of a hydroxyalkyl sulphinic acid with 2-4 carbon atoms with methylamine, dimethylamine, isopropylamine, nbutylamine, ethylene diamine, hydrazine or urea. Examples describe the dyeing of yarns of cotton, mercerised cotton and regenerated cellulose staple fibres.