Flame-retarded transparent plastics

摘要

Flame-retarded transparent plastic composition comprising polyhalogenated trimethylphenyl indan. The polyhalogenated trimethylphenyl indan is a mixture of polyhalogenated trimethylphenyl indanes having each 3 to 9 halogen atoms. The halogen may be bromine or a mixture of bromine and chlorine. The transparent plastic is selected from polycarbonate, polymethylmethacrylate, polystyrene, styrene-acrylonitrile copolymer, and poly (vinyl chloride). The polyhalogenated trimethylphenyl indan is present in an amount of up to about 40% by weight. The transparent plastic flame-retarded material is prapared by mixing the plastic material with a flame-retardant effective amount of a polyhalogenated trimethylphenyl indan.