发明名称 |
Purification of bisphenols by removing residual solvent |
摘要 |
Occluded organic solvent is removed from bisphenol crystals by placing in water maintained at a temperature sufficient to form a molten water-bisphenol phase, holding at that temperature for a time sufficient to transfer the organic solvent to the water phase, flash distilling the organic solvent, cooling molten water-bisphenol phase to produce crystallization and thereafter recovering the bisphenol.
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申请公布号 |
US4533764(A) |
申请公布日期 |
1985.08.06 |
申请号 |
US19840594963 |
申请日期 |
1984.03.29 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
CHANG, FENG-CHIH;BUSBY, DAVID E.;WERNL, SUSAN A. |
分类号 |
C07C37/84;(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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