Patent ID: 7943722

Claim:
A flame-retardant polyarylate resin having a repeating unit represented by Formula 1 below: wherein R 1 is a hydrogen atom or a C 1 -C 5 alkyl group, x is an integer from 1 to 4; R 2 is a substituted or unsubstituted alkylene group, a substituted or unsubstituted phenylene group, or a substituted or unsubstituted arylene group; R 3 is —C(O)—, —CH 2 —, —C(CH 3 ) 2 — or —S(O) 2 —; m 1 and m 2 are integers respectively satisfying 1≦m 1 ≦100 and 0≦m 2 ≦100; and n is an integer satisfying 1≦n≦100; wherein a substituent of the substituted alkylene group, the substituted phenylene group and the substituted arylene group of R 2 is a saturated alkyl group, an unsaturated alkyl group, a phenyl group, an alkoxy group, a phenoxy group, an aryl group, a carboxyl group, a nitro group, an amino group, an amino group substituted with an alkyl group, a sulfonyl group or a sulfamoyl group.