J. Pospisil et al., THE ROLE OF QUINONE METHIDES IN THERMOSTABILIZATION OF HYDROCARBON POLYMERS .1. FORMATION AND REACTIVITY OF QUINONE METHIDES, Polymer degradation and stability, 54(1), 1996, pp. 7-14
The structures and properties of quinone methides(QM) formed by mono-e
lectron oxidation from two commercially important classes of phenolic
antioxidants are reviewed. Dimerisation of QM derived from the benzyl-
type phenols is controlled by the steric hindrance on the exocyclic me
thylene group. Isomerisation of QM derived from the propionate-type ph
enols results in regeneration of the phenolic function. (C) 1996 Elsev
ier Science Limited