SURFACTANT AND DISPERSION AID EACH COMPRISING GRAFT FLUOROPOLYMER

摘要

A surfactant comprising a graft polymer in which at least either of the polymer branches and the polymer backbone contains fluoroalkyl groups. It has high solubility in liquid media although the graft polymer has a high fluoroalkyl concentration. It has the high ability to reduce the surface tension of solutions. Even if the graft polymer has short-chain perfluoroalkyl groups, which have the poor ability to reduce surface tension, the surfactant has high solubility in liquid media and has the high ability to reduce the surface tension of solutions. Use of the surfactant gives a liquid dispersion in which the particles are satisfactorily dispersed in a liquid medium reduced in the burden to be imposed on the environment.