公开(公告)号：DE2909701A1

公开(公告)日：1980-09-18

申请号：DE2909701

申请日：1979-03-12

Applicant: BASF AG

Inventor： HIRNING HERMANN ING GRAD ,  RICHTER PAUL DR ,  BURY WILLI ING GRAD

IPC: D06P1/673 ,  D06P3/48 ,  D06P3/54 ,  D06P3/60 ,  D06P3/82

Abstract: The materials or textiles contg. these fibres admixed with other fibres, are dyed, by the exhaust or pad-steam method, in the presence of the usual assistants and oxidants inhibiting the reductive degradation of the dyestuff. In this process, the bath contains 0.01-2, pref 0.06-0.3 g/l nitrite ions, as oxidant (corresponding to 0.1-0.5 g/l NaNO2 or KNO2). The use of nitrite ions significantly improves the dyestuff yield and ensures reproducible results.