文献类型：专利

英文题名：Process for preparing 4,6-diamino resorcinol hydrochloride

作者：WANG X;LIU Z;HAN Z

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN1450050-A

申请日：2003-05-06

公开日：2003-10-22

语种：英文

收录：DERWENT

摘要：NOVELTY - The present invention discloses a preparation method of 4,6-diaminoresorcinol hydrochloride, including catalytic hydrogenation step of 4,6-dinitro-2-chloro-1,3-dihydroxybenzene by using hydrogen in the organic solvent and in the presence of rare metal catalyst at normal pressure or middle pressure and normal temp. or under the condition of heating. DETAILED DESCRIPTION - The catalyst is formed from carrier which is stable for organic solvent and rare metal loaded on the carrier, and the rare metal content is 0.1-10 wt% of total weight of the carrier. The invention not only can continuously make multiple hydrogenation, and activity of the catalyst is not reduced, at the same time, but also can obtain high-yield and high-quality 4,6-diaminoresorbinol hydrochloride.