abstract |
(57) Abstract: A compound suitable as an antioxidant for styrene (co) polymers is provided. A compound of formula I or II. A composition of an organic material and the compound. A method for stabilizing an organic material with the compound. (In the formula, R 1 = methyl group, H, R 2 = H, methyl group, R 3 = H, C1 -4 alkyl group, R 4, R 5 = C1~5 Alkyl group of Z = CH 2 , O) |