发明名称 Production of azo compounds
摘要 A process for the production of an azo compound comprising contacting with agitation a solution or dispersion of a diazotizable amine, a solution or dispersion of a coupling component and an organic or inorganic nitrite compound, in a water insoluble liquid organic acid, adding to the reaction mixture so formed aqueous alkali to transfer the organic acid, as its soluble salt, into the aqueous phase and separating the azo compound from the liquors. The azo compounds are produced in high yield and purity and are suitable for use as pigments and disperse dyes.
申请公布号 US4496481(A) 申请公布日期 1985.01.29
申请号 US19810329860 申请日期 1981.12.11
申请人 CIBA-GEIGY CORPORATION 发明人 WHEELER, IAN R.
分类号 C09B41/00;(IPC1-7):C09B29/32 主分类号 C09B41/00
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