2,6-二叔丁基苯酚 、 丙酮醛 、 盐酸 在
水 、 Sodium sulfate-III 、 silica gel 、 甲苯 、 甲醇 作用下,
以
溶剂黄146 、 甲苯 为溶剂,
反应 2.0h,
以to give 0.15 g of the title compound as orange needles, melting at 70°-72° C.的产率得到2,6-di-tert-butyl-4-(2-oxopropylidene)cyclohexa-2,5-dien-1-one
参考文献:
名称:
7-substituted quinone methides as inhibitors for unsaturated monomers
Blends of quinone alkide and nitroxyl compounds and polymerization inhibitors
申请人:——
公开号:US20040010159A1
公开(公告)日:2004-01-15
Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of: A) at least one nitroxyl compound, and B) at least one quinone alkide compound having an electron-withdrawing group at the 7-position. Additionally, a composition is disclosed that comprises: A) at least one nitroxyl compound, and B) at least one quinone alkide compound having an electron-withdrawing group at the 7-position.
7-substituted quinone methides as inhibitors for unsaturated monomers
申请人:Ciba-Geigy Corporation
公开号:US05670692A1
公开(公告)日:1997-09-23
Ethylenically unsaturated monomers are protected from premature polymerization during manufacture and storage by the incorporation therein of an effective stabilizing amount of a 7-substituted quinone methide compound.
乙烯不饱和单体通过在制造和储存过程中加入有效稳定剂量的7-取代醌甲烷化合物,以防止过早聚合。
Flame retardant compositions
申请人:——
公开号:US20040097619A1
公开(公告)日:2004-05-20
Polymeric substrates, for example polyolefins such as polypropylene, can be made flame retardant by the incorporation therein of a synergistic mixture of (i.) at least one compound selected from the group consisting of nitroxyl stabilizers, hydroxylamine stabilizers, nitrone stabilizers, substituted hydroxylamine stabilizers, amine oxide stabilizers, benzofuranone stabilizers phosphite and phosphonite stabilizers, quinone methide stabilizers and monoacrylate esters of 2,2′- alkylidenebisphenol stabilizers and (ii.) at least one compound selected from the group consisting of brominated flame retardants, phosphorus containing flame retardants and inorganic flame retardants such as ammonium polyphosphate or decabromodiphenyl oxide; wherein the amount of organic or inorganic flame retardant of component (ii.) required to achieve an acceptable level of flame retardancy is significantly reduced compared to that needed when component (i.) is not present.
Blends of quinone alkide and nitroxyl compounds as polymerization inhibitors
申请人:Benage Brigitte
公开号:US20060155140A1
公开(公告)日:2006-07-13
Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of: A) at least one nitroxyl compound, and B) at least one quinone alkide compound having an electron-withdrawing group at the 7-position. Additionally, a composition is disclosed that comprises: A) at least one nitroxyl compound, and B) at least one quinone alkide compound having an electron-withdrawing group at the 7-position.
本文公开了一种抑制乙烯基不饱和单体过早聚合的方法,该方法包括向所述单体中添加有效量的以下物质:A) 至少一种硝基化合物,和 B) 至少一种醌烷化合物,该化合物在 7 位上具有抽电子基团。此外,还公开了一种组合物,它包括A) 至少一种硝基化合物,和 B) 至少一种在 7 位上具有抽电子基团的醌烷化合物。
7-Substituted quinone methides as inhibitors for unsaturated monomers