Patent ID: 6555236
Filing Date: 2003-04-29
Classification: G02B,Y10T

Abstract:
A process for producing an article having an uneven surface, comprising disposing a film-forming solution between a substrate and a mold in the form of a film so as to make the solution closely contact with the substrate and the mold, said solution being prepared by carrying out the hydrolysis and dehydration condensation reaction of a stock solution containing a silane compound (A) represented by the following chemical formula (1):RSiX3â€ƒâ€ƒ(1) wherein R is a non-hydrolyzable organic group and X is a hydrolyzable group, a silane compound (B) represented by the following chemical-formula (2): SiXâ€²4â€ƒâ€ƒ(2) â€ƒwherein Xâ€² is a hydrolyzable group, and an organic acid catalyst, and heating to form an article having an uneven film having a surface shape which is the inversion of the surface shape of the mold on the surface of the substrate, wherein the film-forming solution contains the silane compounds (A) and (B) in the form of unhydrolysates in amounts of 0.5 to 40 wt % and 0.5 to 60 wt % based on the amount of the silane compound (A) and the amount of the silane compound (B) contained in the stock solution, respectively, and the condensate produced by the dehydration condensation reaction in the film-forming solution has a weight average molecular weight of 300 to 1,900 and wherein the stock solution contains the components (A) and (B) in an (B)/(A) molar ratio of 0.05/1 to 1/1.