发明名称 PROCESS FOR PURIFYING BISPHENOL-A
摘要 <p>Bisphenol-A is purified in a process which comprises the following steps: a) cooling a liquid mixture comprising bisphenol-A and water in a bisphenol-A crystallizer to form bisphenol-A crystals in a liquid phase; b) separating the bisphenol-A crystals from the liquid phase; c) dividing at least a portion of the liquid phase into a bisphenol-rich organic phase and a water-rich phase; d) feeding phenol and at least a portion of the bisphenol-rich organic phase into a adduct crystallizer to form a crystalline adduct of phenol and bisphenol-A in a mother liquor, and e) separating the crystalline adduct from the mother liquor. Bisphenol-A of high purity at a high yield is obtained.</p>
申请公布号 EP1567469(B1) 申请公布日期 2008.10.29
申请号 EP20030783302 申请日期 2003.11.12
申请人 DOW GLOBAL TECHNOLOGIES INC. 发明人 YOUNG, THOMAS, C.;FEORD, DAMIAN, M.;FREY, JOHANN-WILHELM
分类号 C07C37/84;C07C39/16 主分类号 C07C37/84
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