Patent ID: 7451619
Filing Date: 2008-11-18
Classification: C03B,C03C,C08G

Abstract:
1. A process for producing an organic-inorganic hybrid glassy material, comprising the steps of: (a) mixing together sol-gel starting materials; (b) heating a product of the mixing step to conduct a reaction of the sol-gel starting materials; (c) melting a product of the heating step into a melted liquid; and (d) aging the melted liquid into the organic-inorganic hybrid glassy material, wherein the sol-gel starting materials comprise first and second metal alkoxides as raw materials of the organic-inorganic hybrid glassy material, the first metal alkoxide produces a D unit in the organic-inorganic hybrid glassy material, the second metal alkoxide produces at least one chemical unit selected from the group consisting of T so that the organic-inorganic hybrid glassy material has a ratio of D unit to (D unit+T wherein, the D unit is a chemical unit in which, of the four bonds which can be made to a silicon atom, excluding two bonds to which organic substituents are bonded, either both or one of the remaining bonds is bonded to another silicon atom through an oxygen atom; the T 3 unit is a chemical unit in which, of the four bonds which can be made to a silicon atom, excluding one bond to which an organic substituent is bonded, all three of the remaining bonds are bonded to other silicon atoms through oxygen atoms; the T 2 unit is a chemical unit in which, of the four bonds which can be made to a silicon atom, excluding one bond to which an organic substituent is bonded, two of the three remaining bonds are bonded to other silicon atoms through oxygen atoms, and the T 1 unit is a chemical unit in which, of the four bonds which can be made to a silicon atom, excluding one bond to which an organic substituent is bonded, one of the three remaining bonds is bonded to another silicon atom through an oxygen atom.