发明名称 |
PROCESS FOR PURIFYING BISPHENOL-A |
摘要 |
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.
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申请公布号 |
KR20050086768(A) |
申请公布日期 |
2005.08.30 |
申请号 |
KR20057009352 |
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;(IPC1-7):C07C37/84 |
主分类号 |
C07C37/84 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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