发明名称 |
Crystallization process |
摘要 |
A process is provided for the crystallization of bis-(4-chlorophenyl) sulphone from a reaction mixture in which it is formed by reacting chlorobenzene sulphonic acid and chlorobenzene which comprises (i) forming a crystallization liquor from the reaction mixture by adjusting the weight ratio of chlorobenzene to chlorobenzene sulphonic acid of the reaction mixture so as to maximize the quantity of bis-(4-chlorophenyl) sulphone which can crystallize from the liquor at a desired crystallization temperature, and (ii) allowing the bis-(4-chlorophenyl) sulphone to crystallize from the crystallization liquor at the temperature.
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申请公布号 |
US4016210(A) |
申请公布日期 |
1977.04.05 |
申请号 |
US19750625124 |
申请日期 |
1975.10.23 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES LIMITED |
发明人 |
HORNER, PATRICK JAMES;BROWN, JOHN PETER |
分类号 |
C07C317/14;G01N25/14;(IPC1-7):C07C147/08 |
主分类号 |
C07C317/14 |
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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