STYRENE DERIVATIVE AND METHOD FOR PREPARING THE SAME, POLYSTYRENE DERIVATIVE COMPRISING THE STYRENE DERIVATIVE AND METHOD FOR PREPARING THE SAME, AND SUNSCREENING AGENT AND COSMETIC

摘要

A styrene derivative represented by the general formula (I): (I) wherein one of R1 and R2 is vinylbenzyl group, another is hydrogen atom, a lower alkyl group, a carboxyalkyl group having 2 to 5 carbon atoms or phenyl group, R3 is hydrogen atom, a halogen atom, a lower alkyl group, carboxyl group, a carboxyalkyl group having 2 to 5 carbon atoms, a carboxyalkenyl group having 3 to 6 carbon atoms, an alkylamino group having 1 to 4 carbon atoms or nitro group, Q is sulfur atom or oxygen atom, X is , , or , and a method for preparing the same; a polystyrene derivative of which main component is the above styrene derivative and a method for preparing the same; and a sunscreening agent and a cosmetic composition of which active ingredient is the above polystyrene derivative are disclosed.