| 摘要 |
The discoloration prevention composition is composed of 0.005-0.1wt% bis(1,2,2,2,6,6-pentamethyl-4-piperidyl)ester or bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate and two or more compounds selected from 0.01-0.1 wt% triphenylphosphate, 0.01-0.1wt% 2,6-di-tertiary butyl-4-methylphenol as antioxidant, and 0.005-0.1wt% 2-(2-hydroxy-5-methylphenyl)-2H-benzotriazol or 2-(2-hydroxy-3,5-di-tertiary-amylphenyl)-2H-benzotriazol as light stabilizer.
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