申请人:SANKYO COMPANY LIMITED
公开号:EP0583971A1
公开(公告)日:1994-02-23
Compounds of formula (I):
wherein:
R represents H or a mono- or poly- carboxylic acyl group;
R¹ represents H or a carboxylic ester moiety;
R² represents an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or an aralkyl group, said groups being optionally substituted, or R² represents a carboxylic ester moiety;
n = 1 - 4;
Y is O or S;
and esters thereof,
are useful as heat and photo- stabilisers for polymeric materials.
式(I)的化合物:其中:R代表H或单酰基或多酰基群;R¹代表H或羧酸酯基;R²代表烷基、烯基、炔基、芳基或芳基烷基,这些基团可选择性地被取代,或者R²代表羧酸酯基;n = 1 - 4;Y为O或S;及其酯,可用作聚合材料的热稳定剂和光稳定剂。