申请人:Fairmount Chemical Company, Inc.
公开号:US05292890A1
公开(公告)日:1994-03-08
Provided are asymmetrical, ultraviolet stabilizers which are hydroxyphenyl benzotriazolylphenol compounds of the formula: ##STR1## wherein: R.sub.1 is C.sub.1 to C.sub.18 alkyl, C.sub.6 to C.sub.10 aryl, C.sub.7 to C.sub.16 arylalkyl, C.sub.1 to C.sub.12 alkoxy, C.sub.6 to C.sub.10 aryloxy, C.sub.7 to C.sub.16 arylalkoxy, cyclopentyl, cyclohexyl or cumyl; R.sub.2 is C.sub.1 to C.sub.18 alkyl, C.sub.6 to C.sub.10 aryl, C.sub.7 to C.sub.16 arylalkyl, C.sub.1 to C.sub.12 alkoxy, C.sub.6 to C.sub.10 aryloxy, C.sub.7 to C.sub.16 arylalkoxy, cyclopentyl, cyclohexyl or cumyl; R.sub.1 is different from R.sub.2 ; and X is selected from the group consisting of hydrogen, halogen, C.sub.1 to C.sub.12 alkyl, and C.sub.1 to C.sub.12 alkoxy. The invention also pertains to a process for their preparation and stabilized polymer blends containing the stabilizers.
提供的是不对称的紫外线稳定剂,它们是公式为:##STR1##的羟基苯基苯并三唑酚化合物,其中:R.sub.1为C.sub.1到C.sub.18烷基,C.sub.6到C.sub.10芳基,C.sub.7到C.sub.16芳基烷基,C.sub.1到C.sub.12烷氧基,C.sub.6到C.sub.10芳氧基,C.sub.7到C.sub.16芳基烷氧基,环戊基,环己基或叔丁基;R.sub.2为C.sub.1到C.sub.18烷基,C.sub.6到C.sub.10芳基,C.sub.7到C.sub.16芳基烷基,C.sub.1到C.sub.12烷氧基,C.sub.6到C.sub.10芳氧基,C.sub.7到C.sub.16芳基烷氧基,环戊基,环己基或叔丁基;R.sub.1不同于R.sub.2;X选自氢,卤素,C.sub.1到C.sub.12烷基和C.sub.1到C.sub.12烷氧基的群。本发明还涉及一种制备它们的方法和含有稳定剂的稳定聚合物混合物。