| abstract |
This invention provides the novel material which can be utilized as a flame retardant which can be utilized as a polymer, or a flame retardant raw material. In particular, the present invention provides a compound represented by formula (A), wherein R a and R b are each independently a substituent such as hydrogen, an aryl group, a substituted aryl group, or an alkyl group. Or R a and R b together form a further cyclic skeleton; R 1 and R 2 are each independently the same or different radically polymerizable group; R 3 , R 4 and R 5 each independently represents a substituent such as a hydrogen atom, a halogen atom, an alkyl group or a substituted alkyl group. |