| abstract |
(57) [Summary] [Objective] To provide a stabilizer effective for improving the stability of an organic material against photooxidation deterioration. [Configuration] The hindered piperidine compound represented by is effective in preventing photooxidative deterioration of the organic material. In the formula, R 1 is hydrogen, Represents alkyl having 1 to 10 carbons, alkoxy having 1 to 10 carbons, cycloalkyloxy having 3 to 10 carbons, arylalkoxy having 7 to 18 carbons or a hydroxyl group, R 2 is hydrogen or 1 to 18 carbons Represents alkyl, and n represents an integer of 2 to 12. [Effect] By blending this compound as a stabilizer into various organic materials, it is possible to stabilize the organic material, particularly to stabilize it against light. |