发明公开
EP0845448A1 Inhibiting polymerization of vinyl aromatic monomers
失效
Hemmung der Polymerisation von vinylaromatischen Monomeren
- 专利标题： Inhibiting polymerization of vinyl aromatic monomers
- 专利标题（中）： Hemmung der Polymerisation von vinylaromatischen Monomeren
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申请号： EP97810908.0申请日： 1997-11-25
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公开(公告)号： EP0845448A1公开(公告)日： 1998-06-03
- 发明人: Cunkle, Glen Thomas , Thompson, Thomas Friend , Von Ahn, Volker Hartmut , Winter, Roland Arthur Edwin
- 申请人： Ciba Specialty Chemicals Holding Inc.
- 申请人地址： Klybeckstrasse 141 4057 Basel CH
- 专利权人： Ciba Specialty Chemicals Holding Inc.
- 当前专利权人： Ciba Specialty Chemicals Holding Inc.
- 当前专利权人地址： Klybeckstrasse 141 4057 Basel CH
- 优先权： US755875 19961202
- 主分类号： C07C7/20
- IPC分类号： C07C7/20
摘要：
When a nitroxyl compound is heated in an oxygen-free atmosphere with a vinyl aromatic monomer at 50-140°C for up to 60 days, it forms an activated inhibitor mixture which is superior to the nitroxyl compound itself in preventing the premature polymerization of a vinyl aromatic monomer during its processing and purification.
公开/授权文献
- EP0845448B1 Inhibiting polymerization of vinyl aromatic monomers 公开/授权日：2002-01-30
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