Article having predetermined suface shape and method for production thereof

An article with a predetermined surface pattern which comprises a substrate and an organopolysiloxane film formed on the surface of the substrate, wherein the organopolysiloxane film contains the alkylsiloxane or hydrogensiloxane represented by the following formula (3):

• R3SiO3/2 (3)
• wherein R3 is an alkyl group or a hydrogen atom, and the arylsiloxane or substituted arylsiloxane represented by the following formula (4):
• R4SiO3/2 (4)
• wherein R4 is an aryl group or a substituted aryl group.

A film-forming mixed composition for producing an article having a predetermined surface pattern, which contains:

• (A) 1 mole of at least one compound selected from the group consisting of the silane compound represented by the following formula (5), the hydrolysate of the silane compound, and the polycondensate of the hydrolysate:
• R1SiX3 (5)
• wherein R1 is an alkyl group or a hydrogen atom, and X is an alkoxyl group or a halogen atom,
• (B) 1.0 to 19 moles of at least one compound selected from the group consisting of the silane compound represented by the following formula (6), the hydrolysate of the silane compound, and the polycondensate of the hydrolysate:
• R2SiY3 (6)
• wherein R2 is an aryl group or a substituted aryl group, and Y is an alkoxyl group or a halogen atom,
• (C) an alcohol in an amount of 0.3 to 3 times as many moles as the total of the components (A) and (B),
• (D) an acid catalyst in an amount of 0.00001 to 0.1 times as many moles as the total of the components (A) and (B), and
• (E) water in an amount of 2 to 20 times as many moles as the total of the components (A) and (B).