Polyoxybenzylmethylenglycolanhydride

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Polyoxybenzylmethylenglycolanhydride is the thermosetting phenol formaldehyde resin of bakelite, the first artificial thermosetting plastic made. Formed by the reaction under heat and pressure of phenol and formaldehyde, generally with a wood flour filler, it was used for its nonconductive and heat-resistant properties in radio and telephone casings and electrical insulators.

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