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

Abstract From the Canadian patent

A styrene derivative represented by the general formula (I):, (See Formula 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, (See Formula II, III, IV or V), 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; …