Synergistic effects in the inhibition of polybutadiene oxidation by mixtures of N-phenyl-β-naphthylamine and silicon-containing derivatives of 2,6-di-tert-butylphenol
Phenol-substituted silanes with formula RnSiPh4−n (R=[γ-(4-oxy-3,5-di-tert-butylphenyl)propoxy] group and n=1–4), especially RSiPh3, are effective polybutadiene oxidation inhibitors.
Maximum synergism in mixtures of RnSiPh4−n with N-phenyl-β-naphthylamine is observed with stoichiometric proportions of phenyl and amine groups in the mixture components, diminishing in the order R2SiPh2>RSiPh3∼-R3SiPh > R4Si.
KeywordsOxidation Silane Phenyl Synergistic Effect Amine Group
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