Dimeric benzotriazoles as UV absorbers
    1.
    发明授权
    Dimeric benzotriazoles as UV absorbers 失效
    二苯基三唑作为紫外线吸收剂

    公开(公告)号:US5589529A

    公开(公告)日:1996-12-31

    申请号:US554215

    申请日:1995-11-06

    摘要: The invention relates to dimeric 2-(2'-hydroxyphenyl)benzotriazoles of the formula I ##STR1## in which p is 0 or 1;A is C.sub.1 -C.sub.12 alkylene;R.sub.1 and R'.sub.1, independently of one another, are hydrogen, halogen, C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.18 alkoxy or --CN;R.sub.2 and R'.sub.2, independently of one another, are hydrogen or C.sub.1 -C.sub.18 alkyl or together are C.sub.2 -C.sub.12 alkylene or C.sub.2 -C.sub.12 hydroxyalkylene; andR.sub.3 and R'.sub.3, independently of one another, are hydrogen, halogen, C.sub.1 -C.sub.18 alkyl or C.sub.1 -C.sub.18 alkoxy.The compounds of formula I are highly suitable for the stabilization of organic material against the harmful effects of heat, oxygen and light, in particular UV radiation.

    摘要翻译: 本发明涉及式Ⅰ的二(2-羟基苯基)苯并三唑,其中p是0或1; A是C1-C12亚烷基; R 1和R'1彼此独立地是氢,卤素,C 1 -C 18烷基,C 1 -C 18烷氧基或-CN; R2和R'2彼此独立地是氢或C1-C18烷基或一起是C2-C12亚烷基或C2-C12-羟基亚烷基; 和R 3和R'3彼此独立地是氢,卤素,C 1 -C 18烷基或C 1 -C 18烷氧基。 式I的化合物非常适合于有机材料的稳定化,防止热,氧和光,特别是UV辐射的有害影响。