Hydrocarbons, conjugated polymers based

The chemistry or photochemistry of BQDI 53 [l,4-benzoquinone-bis(alkyl or aryl)imine] or BQMI 57 [l,4-benzoquinone-4-(alkyl or aryl)imine] is characteristic of the cross-conjugated systems having exocyclic C=N- bonds [77, 78], Both QI exist in the form of syn and anti geometric isomers. Model experiments revealed that QI retard thermooxidation of hydrocarbons and polymers and photo-oxidation of hydrocarbons [3,4,58,75], They are weaker AO than the parent PD and their effect is more pronounced in unsaturated substrates. For example, the Bandrowski s base 79 has a good antioxidant activity in... 

The acid-catalyzed conversions of hydrocarbons have been extensively studied and are widely reported in chemical literature. Many important petroleum and petrochemical processes involve catalysis by acids. In contrast to this, the use of bases to catalyze hydrocarbon conversions has received little attention except for polymerization of conjugated dienes and styrene to high polymers. 

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