- 专利标题: PROCESS FOR PURIFYING 4,4'-DICHLORODIPHENYL SULFOXIDE
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申请号: US17429200申请日: 2020-02-06
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公开(公告)号: US20220135523A1公开(公告)日: 2022-05-05
- 发明人: Indre THIEL , Christian SCHUETZ , Andreas MELZER , Stefan BLEI
- 申请人: BASF SE
- 申请人地址: DE Ludwigshafen am Rhein
- 专利权人: BASF SE
- 当前专利权人: BASF SE
- 当前专利权人地址: DE Ludwigshafen am Rhein
- 优先权: EP19156198.4 20190208
- 国际申请: PCT/EP2020/052966 WO 20200206
- 主分类号: C07C315/06
- IPC分类号: C07C315/06
摘要:
The invention relates to a process for purifying 4,4′-dichlorodiphenyl sulfoxide comprising: (a) providing a suspension comprising particulate 4,4′-dichlorodiphenyl sulfoxide in monochlorobenzene, (b) solid-liquid separation of the suspension to obtain residual moisture containing 4,4′-dichlorodiphenyl sulfoxide, (c) washing residual moisture containing 4,4′-dichlorodiphenyl sulfoxide with monochlorobenzene, (d) optionally repeating steps (a) to (c).