申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0823435A2
公开(公告)日:1998-02-11
A phosphite of formula (I):
wherein R1, R2, R4 and R5 represent hydrogen atom, an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an aralkyl group or a phenyl group; R3 represents hydrogen atom or an alkyl group; X represents a direct bond, sulfur atom, or a -CHR6- group in which R6 represents hydrogen atom, an alkyl group or a cycloalkyl group; A represents an alkylene group having 2 to 8 carbon atoms or a *-COR7-group in which R7 represents a direct bond or an alkylene group, and * indicates the bond to the oxygen; and one of Y and Z represents a hydroxyl group, an alkoxy group or an aralkyloxy group and the other one represents hydrogen atom or an alkyl group, is suitably used as a stabilizer for an organic material.
式(I)的亚磷酸酯:
其中 R1、R2、R4 和 R5 代表氢原子、烷基、环烷基、烷基环烷基、芳基或苯基;R3 代表氢原子或烷基;X 代表直接键、硫原子或-CHR6-基团,其中 R6 代表氢原子、烷基或环烷基;A 代表具有 2 至 8 个碳原子的亚烷基或 *-COR7- 基团,其中 R7 代表直接键或亚烷基,* 表示与氧的键合;Y 和 Z 中的一个代表羟基、烷氧基或芳氧基,另一个代表氢原子或烷基。