PHOSPHOROUS COPOLYMER, MANUFACTURING METHOD THEREOF AND FLAME-RETARDANT THERMOPLASTIC RESIN COMPOSITION INCLUDING SAME

摘要

The present invention relates to a phosphorous copolymer, a manufacturing method thereof and a flame-retardant thermoplastic resin composition including the same. The phosphorous copolymer includes a repetitive unit represented by Chemical Formula 1 wherein A is each independently a single bond, a C1 to C5 alkylene group, a C2 to C5 alkylidene group, a C5 to C6 cycloalkylidene group, -S-, or -SO2-; R1 and R2 are each independently a substituted or unsubstituted C1 to C6 alkyl group, or a substituted or unsubstituted C6 to C20 aryl group; R3 and R4 are each independently a substituted or unsubstituted C1 to C6 alkyl group, a substituted or unsubstituted C3 to C6 cycloalkyl group, a substituted or unsubstituted C6 to C12 aryl group, or a halogen atom; a and b are each independently an integer from 0 to 4; and m and n are each independently an integer from 1 to 500.;COPYRIGHT KIPO 2014