ABSTRACT
I. Introduction .................................................................................................. 420 II. Antioxidants .................................................................................................. 421
A. Oxidative Degradation .......................................................................... 421 B. Mechanisms of Antioxidants ................................................................ 423
1. Phenolic Antioxidants .................................................................... 423 2. Aromatic Amine Antioxidants ....................................................... 425 3. Hydroperoxide-Decomposing Antioxidants................................... 427
III. Experiments .................................................................................................. 428 A. Phenolic Antioxidants ........................................................................... 428
1. White Sidewall Compound ............................................................ 429 2. Stabilization System for SBR ......................................................... 429
B. Aromatic Amine Antioxidants .............................................................. 431 1. Tire Casings and Other Internal Components ................................ 431 2. Bead Filler ...................................................................................... 436 3. Hydroperoxide-Decomposing Antioxidants................................... 437
IV. Antiozonants ................................................................................................. 441 A. Chemical Reactivity .............................................................................. 441 B. Migrations of Various Antiozonants in NR/BR and SBR Compounds ..... 443
1. Static Migration ..............................................................................444 2. Dynamic Migration ........................................................................446 3. Measurements .................................................................................447
