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1.
公开(公告)号:US5942626A
公开(公告)日:1999-08-24
申请号:US630241
申请日:1996-04-10
申请人: Roland A.E. Winter , Volker H. von Ahn , Tyler A. Stevenson , Mark S. Holt , Ramanathan Ravichandran
发明人: Roland A.E. Winter , Volker H. von Ahn , Tyler A. Stevenson , Mark S. Holt , Ramanathan Ravichandran
IPC分类号: C07D249/20 , C07F7/18 , C07F9/6518 , C08F220/38 , C08G65/32 , C08K5/3472 , C08K5/3475 , C08K5/378 , C09K3/00
CPC分类号: C08K5/378 , C07D249/20 , C07F9/65188 , C08F220/38 , C08K5/3475
摘要: 2-(2-Hydroxyphenyl)-2H-benzotriazole UV-absorbers substituted at the 5-position of the benzo ring by a thioether group exhibit enhanced absorption in the near visible range (over 350 nm) allowing said compounds to be particularly effective in protecting polymer systems which are prone to degradation caused by actinic irradiation with wavelengths over 350 nm.
摘要翻译: 2-(2-羟基苯基)-2H-苯并三唑通过硫醚基在苯环的5-位取代的紫外线吸收剂在近似可见的范围(超过350nm)表现出增强的吸收,使所述化合物在保护中特别有效 由波长超过350nm的光化辐射引起的易于降解的聚合物体系。
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2.
公开(公告)号:US5877344A
公开(公告)日:1999-03-02
申请号:US876017
申请日:1997-06-13
申请人: Matthew E. Gande , Glen T. Cunkle , Leslie R. Gatechair , Stephen D. Pastor , Raymond Seltzer , Roland A.E. Winter
发明人: Matthew E. Gande , Glen T. Cunkle , Leslie R. Gatechair , Stephen D. Pastor , Raymond Seltzer , Roland A.E. Winter
IPC分类号: C07D211/94 , C07C51/50 , C07C57/07 , C07C57/075 , C07C67/62 , C07C69/54 , C07C253/32 , C07C255/08 , C07C69/52
CPC分类号: C07C253/32 , C07C51/50 , C07C67/62
摘要: Ethylenically unsaturated carboxyl monomers, such as acrylic or methacrylic acid or their esters, are protected from premature polymerization during manufacture and storage in the presence or absence of water by the incorporation therein of an effective stabilizing amount of a blend two or more nitroxides. Some of these blends provide synergistic stabilization efficacy much superior to the stabilization results obtained by use of either nitroxide alone.
摘要翻译: 乙烯基不饱和羧基单体如丙烯酸或甲基丙烯酸或其酯在制备和储存期间在水存在或不存在下通过其中加入有效稳定量的两种或更多种氮氧化物的混合物来防止过早聚合。 这些混合物中的一些提供了协同稳定效果,远优于单独使用硝基氧而获得的稳定结果。
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