| abstract |
A surfactant comprising a graft polymer having anbranch polymer and a trunk polymer, at least one of whichncontains a fluoroalkyl group, has high solubility in anliquid medium and shows a superior surface tension-loweringnaction, in spite of containing fluoroalkyl groups at a highnconcentration. The surfactant also has high solubility in anliquid medium, in spite of containing a short-chainnperfluoroalkyl group which is poor in surface tension-loweringnaction, and further shows a superior action tondecrease the surface tension of a solution. The use of thisnsurfactant can provide a liquid dispersion well dispersednin a liquid medium having a small environmental load. |