@article{oai:kanazawa-u.repo.nii.ac.jp:00011806, author = {Suda, Hiroshi and Hosokawa, Yukio and Kitanishi, Masahiro and Shintani, Akira and 隅田, 弘 and 細川, 幸雄 and 北西, 正寛 and 新谷, 晃}, issue = {1}, journal = {金沢大学工学部紀要 = Memoirs of the Faculty of Technology Kanazawa University}, month = {Feb}, note = {Two antioxidants were prepared with a view to improve the volatile and migrating characters of usual one and to extend the stabilizing abilities of them. One of them is the dimer type of phenolic antioxidants connected to β-Cyanopropionaldehyde, 4,4-bis(3,5-di-t-butyl-4-hydroxyphenyl) butyronitrile (I), and the other is a polymer type, poly(3,5-di-iso-propyl- 4—hydroxystyrene) (II). Their stabilizing abilities for polypropylene were evaluated by the measurement of the absorption volume of oxygen on sample films during the oxidation of them in an atmosphere of oxygen at 170~180°C. On the comparison with absorption curves, the film containing 0.5% of I gave the best result. In spite of the polymeric antioxidant, the stabilizing ability of II, having iso-propyl groups at both o-positions of phenolic hydroxy group, was inferior to that of I which has lower molecular weight and has t-butyls at corresponding positions. Though there may be many factors on this result, it may be said that the molecular structure is more important for stabilizing ability of phenolic antioxidants than the molecular weight.}, pages = {89--99}, title = {高分子性酸化防止剤の合成およびその安定効果}, volume = {7}, year = {1973} }