METHOD FOR COATING AQUEOUS HIGH POLYMER LIQUID ON HYDROPHOBIC SOLID SURFACE

摘要

PURPOSE:To coat directly an aq. high polymer liq. without using any surfactants by pretreating the surface of a hydrophobic solid with an aq. sol wherein a colloid whose surface is positively charged is made hydrophobic. CONSTITUTION:The surface of a hydrophobic solid is pretreated with an aq. sol of a silane derivative, etc. obtained by making an inorg. colloid such as silica sol dispersible in water and whose surface is positively charged in water partially hydrophobic with an org. acid, when the surface of the hydrophobic solid is coated with a soln. or a liq. dispersion of a high polymer using water as a continuous phase. Consequently, the aq. high polymer liq. can be coated on the surface of the hydrophobic solid without using any surfactant.