发明名称 Liquid compositions of prereduced sulfur dyes and production thereof
摘要 Liquid compositions of sulfur dyes in reduced form are obtained by reducing a sulfur dye in an alkaline medium to which no sulfide reducing agent has been added, preferably employing a reducing sugar as reducing agent and a sulfur dye which has been washed to remove inorganic salts therefrom.
申请公布号 US4917706(A) 申请公布日期 1990.04.17
申请号 US19880145545 申请日期 1988.02.01
申请人 SANDOZ LTD. 发明人 MESZAROS, LASZLO A.
分类号 C09B67/38 主分类号 C09B67/38
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