申请人:EASTMAN KODAK COMPANY
公开号:EP0412028A1
公开(公告)日:1991-02-06
Disclosed are novel bis-cyclic phosphite compounds having the formula
wherein
each R¹ is independently selected from hydrogen, alkyl, aralkyl, aryl, carboxy, alkoxycarbonyl or halogen;
each R² is independently selected from hydrogen, alkyl, aralkyl, alkoxy, aryl, carboxy, alkoxycarbonyl or halogen;
each R³ and R⁴ is alkyl; and
A is 1,3- or 1,4-phenylene.
Also disclosed are synthetic polymeric materials stabilized with one or more of the above compounds.
本发明涉及一种新型的双环磷酸酯化合物,其化学式如下:其中每个R¹独立选择自氢、烷基、芳基烷基、芳基、羧基、烷氧基羰基或卤素;每个R²独立选择自氢、烷基、芳基烷基、烷氧基、芳基、羧基、烷氧基羰基或卤素;每个R³和R⁴为烷基;A为1,3-或1,4-苯基。本发明还涉及使用上述化合物之一或多个稳定的合成聚合材料。