Patent ID: 6503992
Filing Date: 2003-01-07
Classification: C07F,C08F

Abstract:
A copolymer comprising a monovinylidene aromatic compound and a phosphorus containing compound selected froma) a phosphorus-containing compound suitable for use as a comonomer, capable of being copolymerized with a monovinylidene aromatic compound to impart flame resistant properties to the resultant copolymers thereof, comprising compounds of a generic formula: â€ƒwherein: R2 is carboalkoxy or a radical of generic formula: R1 is hydrogen or an alkyl; X is oxygen, sulfur or alkylamine; Y is oxygen or sulfur; P is pentavalent phosphorus; and n is 2 or 3; and b) a phosphorus-containing compound suitable for use as a comonomer, capable of being copolymerized with a monovinylidene aromatic compound to impart flame resistant properties to the resultant copolymers thereof, comprising compounds of a generic formula: â€ƒwherein: R2 is carboalkoxy or a radical of generic formula: R1 is hydrogen or an alkyl; X is oxygen, sulfur or alkylamine; P is trivalent phosphorus; and n is 2 or 3.