发明申请
- 专利标题: PROCESS FOR PREPARING 4,4'-DICHLORODIPHENYL SULFONE
- 专利标题(中): 制备4,4'-二氯苯基磺酰胺的方法
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申请号: US13090711申请日: 2011-04-20
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公开(公告)号: US20110263902A1公开(公告)日: 2011-10-27
- 发明人: Patrick Deck , Heiner Schelling , Florian Garlichs
- 申请人: Patrick Deck , Heiner Schelling , Florian Garlichs
- 申请人地址: DE Ludwigshafen
- 专利权人: BASF SE
- 当前专利权人: BASF SE
- 当前专利权人地址: DE Ludwigshafen
- 主分类号: C07C315/00
- IPC分类号: C07C315/00
摘要:
The invention relates to a process for preparing 4,4′-dichlorodiphenyl sulfone, comprising the reaction of monochlorobenzene and liquid sulfur trioxide, wherein the liquid sulfur trioxide used has a boron content of at most 100 ppm based on the total weight of the sulfur trioxide used, including all secondary components.
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