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公开(公告)号:US5095146A
公开(公告)日:1992-03-10
申请号:US674783
申请日:1991-03-25
申请人: Martin A. Zeitlin , Diane Wilger-Nowicki
发明人: Martin A. Zeitlin , Diane Wilger-Nowicki
IPC分类号: C07C51/43
CPC分类号: C07C51/43
摘要: Optical density of terephthalic acid is reduced in excess of ninety percent by the direct addition of water to selected crystallizers in a precipitative process based on hydrogenation and flask crystallization.
摘要翻译: 在基于氢化和烧瓶结晶的沉淀过程中,通过直接向所选结晶器中加入水,对苯二甲酸的光密度降低了百分之九十以上。