ETHYLENICALLY UNSATURATED DERIVATIVES OF 4-AMINOBENZOIC ACID AND POLYMERS PREPARED THEREFROM

摘要

Ethylenically unsaturated derivatives of 4-aminobenzoic acid are prepared by a novel method involving the reaction under controlled conditions of 4-aminobenzoic acid and various derivatives thereof with allyl chloride. The resulting monomers may, thereafter, be copolymerized with a wide variety of conventional ethylenically unsaturated, i.e., vinyl, monomers. The monomeric derivatives as well as the copolymers prepared therefrom are ultra-violet absorbers in the 280-320 millimicrons range and find a particular utility as a sun-screen agent in suntan formulations.