发明名称 |
Process for the preparation of 9,9-bis-(4-hydroxyphenyl)fluorene. |
摘要 |
<p>A polyalkylene glycol is added to a reaction mixture obtained by a condensation reaction of fluorenone with phenol in the presence of ss-mercaptopropionic acid and HCl gas, excess phenol is then distilled off, and the residue is crystallised out from a solvent which is miscible with the polyalkylene glycol used. After recrystallisation and treatment with water, 9,9-bis-(4-hydroxyphenyl)fluorene is obtained in the form of a white crystalline product in a purity of above 99%. </p> |
申请公布号 |
EP0502252(B1) |
申请公布日期 |
1995.03.15 |
申请号 |
EP19910121044 |
申请日期 |
1991.12.09 |
申请人 |
RUETGERSWERKE AKTIENGESELLSCHAFT |
发明人 |
ORTH, WINFRIED, DR.;PASTOREK, EMMERICH, DR.;WEISS, WOLFGANG, DR.;KLEFFNER, HANS WERNER, DR. |
分类号 |
B01J31/02;C07B61/00;C07C37/20;C07C37/84;C07C39/15;C07C39/17;(IPC1-7):C07C39/17 |
主分类号 |
B01J31/02 |
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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