Polybenzoxazine composition of high char yield

摘要

A polybenzoxazine comprising the reaction product of a mixture comprising a combination or furan compound (iv) thereof, - (57) [Abstract] (i) benzoxazine compound, (ii) furan compound, (iii) benzoxazine The mixture polybenzoxazine with a furan ring versus benzoxazine ring ratio of 0.001 to 10 at least many. The mixture, to produce a polybenzoxazine by heating the mixture for a time sufficient to produce a polybenzoxazine.