| 发明名称 |
PROCESS FOR PRODUCING MIXTURE OF DIHYDROXYDIPHENYLSULFONE ISOMERS |
| 摘要 |
It is intended to provide a process for producing a mixture of dihydroxydiphenylsulfone isomers containing 2,4'-dihydroxydiphenylsulfone characterized in that 4,4'-dihydroxydiphenylsulfone or a mixture of dihydroxydiphenylsulfone isomers containing 85% by weight or more of 4,4'-dihydroxydiphenylsuflone is heated in the presence of phenol and sulfuric acid, or in the presence of phenol and sulfonic acid.
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| 申请公布号 |
WO03029204(A1) |
申请公布日期 |
2003.04.10 |
| 申请号 |
WO2002JP09920 |
申请日期 |
2002.09.26 |
| 申请人 |
KONISHI CHEMICAL IND. CO., LTD.;OI, FUMIO;YANASE, NORIO;YAMAMOTO, MASAMICHI |
发明人 |
OI, FUMIO;YANASE, NORIO;YAMAMOTO, MASAMICHI |
| 分类号 |
C07C315/04;C07C317/22;(IPC1-7):C07C315/04 |
主分类号 |
C07C315/04 |
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