FLAME RETARDANT POLYIMIDE SYSTEM

摘要

K-18665/A/CGC 1555 FLAME RETARDANT POLYIMIDE SYSTEM Flame retardant polyimide compositions comprise (A) the reaction product of (a) a polyimide containing at least two radicals of the formula wherein D is a divalent radical containing a C=C bond, (b) from about 0.05 to 2.0 moles per mole of component (a) of an alkenyl phenol, an alkenyl phenol ether or mixtures thereof, and (c) tribromophenyl-maleimide; and (B) an ionic or free-radical polymerization catalyst; and (C) phenothiazine or a derivative thereof.