申请人:Asahi Kasei Kogyo Kabushiki Kaisha
公开号:US04365032A1
公开(公告)日:1982-12-21
A monoester compound of a 2,2'-alkylidene bis(4,6-di-substituted phenol) useful as an antioxidant in synthetic polymers having good resistant to oxides of nitrogen fumes, represented by the formula (I), ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, each represents a C.sub.1-4 alkyl group, a C.sub.5-6 cycloalkyl group or a methyl-substituted C.sub.5-6 cycloalkyl group; and one of R.sub.3 and R.sub.4 represents a hydrogen atom and the other represents a hydrogen atom or a C.sub.1-10 alkyl group or both of them represent a methyl group; R.sub.5 represents a C.sub.4-9 alkyl group, a C.sub.3-7 cycloalkyl group, a C.sub.2-4 alkenyl group, a phenyl group, a C.sub.1-4 alkyl-substituted phenyl group, a C.sub.1-4 alkoxy-substituted phenyl group, a mono- or di- C.sub.1-4 alkyl-substituted hydroxyphenyl group, a styryl group, a benzyl group or a pyridyl group, and a method of preparing such a monoester compound.
一种2,2'-烷基亚甲基双(4,6-二取代苯酚)的单酯化合物,用作合成聚合物中的抗氮氧化物烟雾的抗氧化剂,其化学式为(I),其中R1和R2,可以相同也可以不同,分别代表C1-4烷基、C5-6环烷基或甲基取代的C5-6环烷基;R3和R4中的一个代表氢原子,另一个代表氢原子或C1-10烷基,或两者都代表甲基;R5代表C4-9烷基、C3-7环烷基、C2-4烯基、苯基、C1-4烷基取代的苯基、C1-4烷氧基取代的苯基、单取代或双取代的C1-4烷基取代的羟基苯基、苯乙烯基、苄基或吡啶基,以及制备此类单酯化合物的方法。