摘要:
Flame retardant molding compounds comprising polymers of methyl methacrylate having an average molecular weight between 1.times.10.sup.5 and 2.times.10.sup.5, which molding compounds contain from 8 to 15 weight percent of at least one chloroalkylphosphoric acid ester of the formula ##STR1## wherein R.sub.1 is alkyl or ##STR2## and R.sub.2 is hydrogen, methyl, ethyl, or chloro-substituted methyl or ethyl.