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Antioxidants and stabilizers—LXXI: Reaction of bishydroperoxide modelling oxidized polypropylene with 2,6-ditert-butyl-4-methylphenol

✍ Scribed by J. Kovářová-Lerchová; J. Pospišil

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
306 KB
Volume
14
Category
Article
ISSN
0014-3057

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✦ Synopsis

In the reaction of 2A-dimethyl-2,4-heptanedihydroperoxide with 2,6-ditert-butyl-4-methylphenol in the presence of Co(ll)/Co(Ill) ions, under conditions modelling the interaction of oxidized polypropylene with antioxidant, two alkylperoxycyclohexadienones are formed. At a lower relative concentration of the ROO" radicals, there is also oxidative coupling and formation of bisphenol and stilbenequinone. A change in the composition of the reaction product due to a change in the relative proportions of reactants has also been demonstrated in a reaction carried out with tert-butyl-peroxyl. Alkylperoxycyclohexadienones thus obtained initiate the oxidation of tetralin.

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