Manufacture of Violet-black to Greenish-black Basic Disazo-dyestuffs.

摘要

22,069. Imray, O., [Farbwerke vorm. Meister, Lucius, & Br³ning]. Oct. 6. Secondary disazo dyes.-Basic disazo dyes are obtained by diazotizing the aminoazo compounds obtained from salts of aminophenyltrimethyl ammonium and m-toluidine, and combining with 1:5- or 1:8-diamino- or -aminooxynaphthalene. The products dye artificial silk black tints. Specification 9343/96 is referred to.