| abstract |
Provided are a water-repellent base which has a water-repellent coating film having excellent water repellency and wear resistance and a process for producing the water-repellent base. The water-repellent base comprises a base and a water-repellent coating film formed on at least one surface of the base, and is characterized in that the water-repellent coating film comprises: a primer layer which has been disposed on the base side, contains a metal oxide as a binder and aggregates of fine metal oxide particles having an average primary-particle diameter of 20-85 nm, and has surface irregularities; and a water-repellent layer disposed on the primer layer along the surface irregularities of the primer layer. The water-repellent base is further characterized in that the surface of the water-repellent coating film has a water slippage, which is an index to water repellency, of 100 mm or more and that after a friction test in which flannel fabric provided for in JIS L0803 is reciprocated 2,000 times at a stress of 11.8 N/4 cm2 using a traverse testing machine, the surface of the water-repellent coating film has a water slippage of 20 mm or more. |