| abstract |
(57) [Summary] [Structure] The following formula (1) [Wherein, for example; m = 1, R 1 is an OH group, a C 1-18 alkoxy group; (Substituted) phenoxy group, (R 15 and R 16 are independently H or C 1-4 alkyl group, P = 1, 2, R 19 and R 20 represent a C1-4 alkyl group), and R 2 is H Or C 1-18 alkyl group, R 3, R 5, R 7, R 10-12 is H And R 4 represents H or a C 1-4 alkyl group; when R 6 is H, R 4 is (R 17 and R 18 form a cyclohexylidene ring together, R 8 And R 9 independently represent H or a C 1-4 alkyl group) Novel 3- (carboxymethoxyphenyl) represented by A composition comprising benzofuran-2-one and the compound and an organic material compound susceptible to oxidative, thermal or photo-induced degradation. The above compounds are particularly useful as stabilizers for organic materials, especially synthetic polymers, which are susceptible to oxidative, thermal or photoinduced degradation. |