Abstract
A new dispersing agent was synthesized by introducing a vinyl pyrrolidone group into the acrylate/dirnethicone acrylate copolymer. The graft copolymer formed a layer throughout surface of each particle, As a dispersing agent, it showed unique and excellent properties when it is used to disperse inorganic fine powder in volatile silkone oil, Introducing the adsorption segment improved its dispersion ability to be stable not only in silicone oil but also in mixtures containing ester oil or UV absorbent. Since the application film containing the new graft copolymer was superior in water resistance, it was found that it maintains a UV protection effect and high transparency through waterproof exarnination, Accordingly, a sunscreen product that has both high transparency and water mesistance can be successfully formulated using the new graft copolymer as a dispersing agents.
