发明名称 |
Purification of p,p-bisphenolate solutions |
摘要 |
Process for purification of 14-18 % phenolic p,p-bisphenolate solutions obtained in the production of p,p-bisphenols, comprises treating a p,p-bisphenolate solution with a content of at least 99.5 wt.% p,p-bisphenolate by extractive removal of the isomers of the bisphenols with halogen-free organic solvents to raise the p,p-bisphenol content to >99.95 wt. % with respect to dissolved solids.
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申请公布号 |
EP0796834(A2) |
申请公布日期 |
1997.09.24 |
申请号 |
EP19970103940 |
申请日期 |
1997.03.10 |
申请人 |
BAYER AG |
发明人 |
WULFF, CLAUS, DR.;MEURER, KURT-PETER, DR.;VAN OSSELAER, TONY, DR.;BOYENS, ROELOF;HINZ, JUERGEN, DR. |
分类号 |
C07C37/64;C07C37/72;C07C39/15;C07C39/235;(IPC1-7):C07C37/72 |
主分类号 |
C07C37/64 |
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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