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US4375562A Process for the preparation of bis-(amino-phenyl)-disulphides 失效
双(氨基 - 苯基) - 二硫化物的制备方法

Process for the preparation of bis-(amino-phenyl)-disulphides
摘要:
Process for the preparation of a bis-(amino-phenyl)-disulphide of the formula ##STR1## in which R represents hydrogen or halogen,which comprises contacting an amino-thiophenol of the formula ##STR2## or a salt thereof in which R has the abovementioned meaningwith sulphur or a sulphur-donating substance in an aqueous dispersion at a temperature of 10.degree. to 120.degree. C. and a pH value of 3 to 9.
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