PROCESS FOR PRODUCTION OF SUBSTRATES HAVING WATER-REPELLENT HYDROPHILIC FILMS ON THE SURFACE

摘要

The invention provides a novel substrate which has a desired patterning and which has both a water-repellent area and a hydrophilic area; and a process for the production thereof which can dispense with special equipment or long-time irradiation with light. A process for the production of a substrate having a water-repellent hydrophilic film on the surface by conducting the following steps (1) to (3) successively: step (1) of forming on a substrate a surface on which hydrogen atoms bonded to silicon atoms are present, step (2) of reacting part of the hydrogen atoms bonded to silicon atoms with a water-repellent compound (B) which has both an unsaturated bond capable of being hydrosilylated and a water-repellent moiety through hydrosilylation in the presence of a hydrosilylation catalyst to introduce the water-repellent moiety to part of the surface and thus form a surface having a water-repellent area, and step (3) of converting at least part of the residual hydrogen atoms bonded to silicon atoms on the resulting surface into hydrophilic groups to introduce a hydrophilic area to the surface and thus form a surface having both a water-repellent area and a hydrophilic area.