Article having a predetermined surface configuration and...

B - Operations – Transporting – 32 – B

Patent

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B32B 9/00 (2006.01) C03C 17/25 (2006.01) C08G 79/00 (2006.01) C08L 85/00 (2006.01) C09D 183/02 (2006.01) C09D 183/04 (2006.01) C09D 183/14 (2006.01) C09D 185/00 (2006.01) G02B 1/10 (2006.01) G02B 3/00 (2006.01)

Patent

CA 2407378

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 M1Xm, a hydrolyzed product thereof or a hydrolyzed and polycondensed product thereof and a metal compound represented by R1M2Yn, a hydrolyzed product thereof or a hydrolyzed and polycondensed product thereof, wherein at least one of M1and M2 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 M1 and M2.

Cette invention concerne un procédé de préparation d'un article présentant une forme prédéfinie, selon lequel un matériau sol-gel est disposé, sous la forme d'un film, entre un substrat et un moule en contact étroit avec chacun d'entre eux, puis il est chauffé, afin de préparer un article comprenant le substrat ainsi qu'un film gélifié recouvrant la surface de ce substrat, et présentant une surface dont la forme est obtenue par l'inversion de la forme de la surface dudit moule. La présente invention se caractérise par ce que le matériau sol-gel comprend un composé métallique représenté par M?1¿X¿m?, un produit hydrolysé de ce dernier, ou un produit hydrolysé et polycondensé de ce dernier, ainsi qu'un composé métallique représenté par R?1¿M?2¿Y¿n?, un produit hydrolysé de ce dernier ou un produit hydrolysé et polycondensé de ce dernier, au moins un de M?1¿ et M?2¿ étant un atome métallique de Ti, Zr, Al, Ge, Sn ou Sb, et l'atome métallique susmentionné représentant au moins 10 % des atomes de la totalité de M?1¿ et m?2¿.

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