Organic-inorganic hybrid glassy materials and their production processes
AssigneeCentral Glass Company, Limited
InventorsMinoru Kuniyoshi, Naoya Hayakawa, Kensuke Makita, Toshinobu Yoko, Masahide Takahashi
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Abstract
In a production process of an organic-inorganic hybrid glassy material, the invention relates to a process for producing an organic-inorganic hybrid glassy material, characterized in that the process comprises at least the three steps of producing a gel body by a sol-gel method; melting by heating; and aging, and it relates to an organic-inorganic hybrid glassy material produced by this process.
Claims12
A process for producing an organic-inorganic hybrid glassy material, the process comprising the sequential steps of:
- producing a gel body by a sol-gel method in which at least one kind of a silicon alkoxide containing a phenyl group is used as a sol-gel raw material, and in which only an acid is used as a catalyst of the sol-gel method;
- drying the gel body to obtain a dry gel;
- melting the dry gel by heating at a temperature of from 100° C. to 300° C. into a melt;
- and
- aging the melt at a temperature of from 30° C. to 400° C. for a period of time of 5 minutes or longer,
- wherein a structure of the gel body contains a unit represented by the formula PhnSiO(4−n)/2, where Ph represents a phenyl group and n represents a natural number selected from 1, 2 and 3.
A process for producing an organic-inorganic hybrid glassy material, the process comprising the sequential steps of:
- producing a gel body by a sol-gel method in which at least one kind of a silicon alkoxide containing a phenyl group is used as a sol-gel raw material, and in which only an acid is used as a catalyst of the sol-gel method;
- drying the gel body to obtain a dry gel;
- mixing the dry gel with a substance obtained by a non-aqueous acid-base reaction method to prepare a mixture;
- melting the mixture by heating at a temperature of from 100° C. to 300° C. into a melt;
- and
- aging the melt at a temperature of from 30° C. to 400° C. for a period of time of 5 minutes or longer.
A process for producing an organic-inorganic hybrid glassy material, the process comprising the sequential steps of:
- producing a gel body by a sol-gel method in which a phenyltrialkoxysilane and a second silane are used as sol-gel raw materials, wherein the second silane is selected from the group consisting of alkylalkoxysilanes and diphenyldialkoxysilanes;
- drying the gel body to obtain a dry gel;
- melting the dry gel by heating at a temperature of from 100° C. to 300° C. into a melt;
- and
- aging the melt at a temperature of from 30° C. to 400° C. for a period of time of 5 minutes or longer,
- wherein a ratio of the phenyltrialkoxysilane to the second silane by mol percent based on a total mol number of the phenyltrialkoxysilane and the second silane is from 7:3 to 9:1.
Dependencies are inferred from the claim text.