| 发明名称 |
Preparation of 4,4{40 -dihydroxydiphenylsulfones |
| 摘要 |
A phenol is reacted with sulphur trioxide in the presence of liquid hydrogen fluoride to form a 4,4'-dihydroxydiphenylsulphone. A molar excess of hydrogen fluoride and stoichiometric proportions of sulphur trioxide and phenol or a slight excess of sulphur trioxide over phenol are preferred.
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| 申请公布号 |
US4125562(A) |
申请公布日期 |
1978.11.14 |
| 申请号 |
US19780877735 |
申请日期 |
1978.02.14 |
| 申请人 |
IMPERIAL CHEMICAL INDUSTRIES LIMITED |
发明人 |
DARRAGH, JOHN I.;ROSE, JOHN B. |
| 分类号 |
C07C67/00;C07C313/00;C07C315/00;C07C317/22;(IPC1-7):C07C147/10 |
主分类号 |
C07C67/00 |
| 代理机构 |
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代理人 |
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| 地址 |
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