Method for producing dihydroxydiphenylsulfone isomer mixture
本发明提供一种制备含有2,4'-二羟基二苯砜的二羟基二苯砜异构体混合物的方法,包括在苯酚和硫酸或磺酸的存在下,加热4,4'-二羟基二苯砜或含有至少85重量%的4,4'-二羟基二苯砜的二羟基二苯砜异构体混合物。 The present invention provides a process for producing a mixture of dihydroxydiphenylsulfone isomers containing 2,4'-dihydroxydiphenylsulfone, the process comprising heating 4...
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Main Authors | , , |
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Format | Patent |
Language | Chinese English |
Published |
22.12.2004
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | 本发明提供一种制备含有2,4'-二羟基二苯砜的二羟基二苯砜异构体混合物的方法,包括在苯酚和硫酸或磺酸的存在下,加热4,4'-二羟基二苯砜或含有至少85重量%的4,4'-二羟基二苯砜的二羟基二苯砜异构体混合物。
The present invention provides a process for producing a mixture of dihydroxydiphenylsulfone isomers containing 2,4'-dihydroxydiphenylsulfone, the process comprising heating 4,4'-dihydroxydiphenylsulfone or a mixture of dihydroxydiphenylsulfone isomers containing at least 85 wt.% of 4,4'-dihydroxydiphenylsulfone in the presence of phenol and sulfuric or sulfonic acid. |
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Bibliography: | Application Number: CN20028018400 |