Patent ID: 7479535

Claim:
A composition, comprising a phosphorus-containing compound with a star structure represented by the following formula: wherein, independently for each occurrence: Q represents —O or —N(R3); r represents 0 or 1, and s represents 3 or 2, such that r+s=3; R1 represents a polymeric chain; R2 represents —H, alkyl, cycloalkyl, —O-alkyl, —O-cycloalkyl, cycloalkenyl, —O-cycloalkenyl, aryl, —O-aryl, heterocycle, —O-heterocycle, polycycle, —O-polycycle, or —N(R4)R5; R3 represents —H, alkyl, aryl, cycloalkyl, cycloalkenyl, heterocycle, or polycycle; R4 and R5, each independently, represent a hydrogen, an alkyl, an alkenyl, —(CH 2 ) m —R6, or R4 and R5, taken together with the N atom to which they are attached complete a heterocycle having from 4 to about 8 atoms in the ring structure; m represents an integer from 0-10; and R6 represents —H, alkyl, cycloakyl, —O-alkyl, —O-cycloalkyl, cycloalkenyl, —O-cycloalkenyl, aryl, —O-aryl, heterocycle, —O-heterocycle, polycycle or —O-polycycle.