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Antioxidants and stabilizers—LXVIII: Reactions of hydroperoxides modelling oxidized polyolefins with 2,6-ditertbutyl-4-methylphenol

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

Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
401 KB
Volume
13
Category
Article
ISSN
0014-3057

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✦ Synopsis

Hydroperoxides modelling oxidized segments of the polyolefln chain were synthesized. Reaction of derived alkyl-peroxyls with 2,6-ditert-butyl-4-methylphenol, under the conditions of inhibited oxidation, yielded 4-alkyl-peroxy-2,5-cyclohexadienones which were characterized. These compounds accelerate the thermal oxidation of tetralin. The investigation confirmed the main mechanism of transformation of the phenolic antioxidant due to the alkylperoxy radicals arising by autoxidation of hydrocarbon substrates.

* Initial decomposition temperature determined by DSC. "l" Molar ratio ROOH -antioxidant 2:1, product isolated by column fraetionation.

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