• 专利标题: PROCESS FOR PURIFYING 4,4'-DICHLORODIPHENYL SULFOXIDE
  • 申请号: US17429200
    申请日: 2020-02-06
  • 公开(公告)号: US20220135523A1
    公开(公告)日: 2022-05-05
  • 发明人: Indre THIELChristian SCHUETZAndreas MELZERStefan 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
PROCESS FOR PURIFYING 4,4'-DICHLORODIPHENYL SULFOXIDE
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).
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