Production of p-aminophenol and nuclear-substituted p-aminophenol
专利汇可以提供Production of p-aminophenol and nuclear-substituted p-aminophenol专利检索，专利查询，专利分析的服务。并且PURPOSE: The catalytic reduction of nitrobenzene derivatives is effected in a sulfuric acid aqueous solution using a catalyst in which a specific amount of carbon is added to Pt on carrier to reduce the content of Pt, thereby producing title compounds useful for additives for synthetic resins, medicines, and agricultural chemicals.
CONSTITUTION: The catalytic reduction of nitrobenzene or nuclear-substituted nitrobenzene where the para position to the nitro groups is unsubstituted is conducted in a sulfuric aqueous solution (5W20 wt%) using a Pt, Pd or Rh on a carrier as carbon to which 30W2000 parts by wt, per 1 part of the metal, of carbon are added an, when necessary, a wetting agent under a hydrogen partial pressure of 0.1W2.0 kg/cm
2 at 60W110°C to produce p-minophenol or nuclear-substituted p-aminophenol.
EFFECT: The regeneration costs of noble metals reduced.
USE: Intermediates for synthetic resins, chemicals for photography and others.
COPYRIGHT: (C)1979,JPO&Japio，下面是Production of p-aminophenol and nuclear-substituted p-aminophenol专利的具体信息内容。
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