ARTICLE HAVING PREDETERMINED SURFACE SHAPE AND METHOD FOR PREPARATION THEREOF

摘要

A method for preparing an article having a predetermined shape wherein a sol-gel material is disposed in a film form between a substrate and a mold being closely contacted with both of them and then is heated, to thereby prepare an article having the substrate and, covering the surface thereof, a gelled film having a surface of a shape obtained by reversing the surface shape of the mold, characterized in that the sol-gel material comprises a metal compound represented by M<1>Xm, a hydrolyzed product thereof or a hydrolyzed and polycondensed product thereof and a metal compound represented by R<1>M<2>Yn, a hydrolyzed product thereof or a hydrolyzed and polycondensed product thereof, wherein at least one of M<1>and M<2> is a metal atom of Ti, Zr, Al, Ge, Sn or Sb, and the above specified metal atom accounts for at least 10 atom % of the sum of M<1> and M<2>.