Hydroquinone type compound and its use as stabilizer for synthetic resin

摘要

A compound represented by the formula of <IMAGE> wherein R1 represents an alkyl having 1 to 5 carbon atoms; R2 represents an alkyl having 1 to 18 carbon atoms, an alkenyl having 2 to 5 carbon atoms, an aralkyl having 7 to 9 carbon atoms, phenyl, an aliphatic acyl having 2 to 5 carbon atoms, or benzoyl; R3 represents hydrogen or an alkyl having 1 to 11 carbon atoms; and R4 represents hydrogen or methyl. The compound is useful as a stabilizer for synthetic resins such as butadiene polymers. The butadiene polymer containing the compound is stable against thermal deterioration in the absence of oxygen, as well as against thermal oxidative deeterioration and thermal oxidative discoloration.