发明公开
EP0845458A1 1,2-Bis-adducts of stable nitroxides with substituted enthylenes and stabilized compositions
失效
Introxyden与取代乙烯和1,2-双加合物稳定的组合物
- 专利标题： 1,2-Bis-adducts of stable nitroxides with substituted enthylenes and stabilized compositions
- 专利标题（中）： Introxyden与取代乙烯和1,2-双加合物稳定的组合物
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申请号： EP97810898.3申请日： 1997-11-24
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公开(公告)号： EP0845458A1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： US755882 19961202
- 主分类号： C07C239/20
- IPC分类号： C07C239/20 ; C07D211/94 ; C07D295/22 ; C08K5/3435
摘要：
1,2-Bis-adducts of stable hindered nitroxide compounds with substituted ethylenes of formulas (I) & (II) are prepared by reacting two equivalents of nitroxyl compound with an ethylenically unsaturated compound such as styrene or an acrylate ester. These adducts are very effective inhibitors to prevent the premature polymerization of ethylenically unsaturated monomers when such monomers are distilled, processed or stored.
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