| 摘要 |
1401917 Stabilizing polymers CIBAGEIGY AG 1 March 1973 [2 March 1972] 10108/73 Heading C3P [Also in Divisions C2 and C5] Synthetic resins, e.g. polypropylene, are stabilized against oxidative and/or thermal deterioration by incorporation therein of a compound of Formula I (in which R 1 is C 1-5 alkyl, R 2 is H or C 1-5 alkyl, each of R 3 and R 4 is H, halogen, C 1-18 alkoxy or C 1-18 alkyl and n is 0, 1, 2, 3, 4 or 5) and optionally a compound of Formula III (in which R is C 6-24 alkyl and n is 1 to 6), e.g. distearylthiodipropionate. |
