Patent ID: 7566780

Claim:
A phosphorus-based oxazine compound with a structure as shown in formula (I): wherein n represents 2, X represents a single bond or wherein a is an integer ranging from 1 to 16, Ar represents Y represents or a single bond, wherein Z 1 or Z 2 individually represents a hydrogen, a C 1 -C 6 alkyl group, a C 1 -C 6 alkoxyl group, CF 3 , a phenyl group, a halogen group, a phenoxy group or a C 3 -C 7 cyclic alkyl group, m represents 1 or 2, R represents a hydrogen, a C 1 -C 6 alkyl group, a C 1 -C 6 alkoxyl group, CF 3 , OCF 3 , a phenyl group, a halogen group, a phenoxy group or a C 3 -C 7 cyclic alkyl group, and when m is 2, R represents the same or different groups.