Patent · US Active

Organic-inorganic hybrid glassy material and its production process

US7728095B2 · kind B2 · utility

0Cited by

2References

13Claims

0Family size

Assignee

CENTRAL GLASS COMPANY, LIMITED · JP

Inventors

Minoru Kuniyoshi · Yamaguchi, JP
Toshinobu Yoko · Uji, JP

Key dates

Filing date	Feb 9, 2007
Grant date	Jun 1, 2010
Priority date	—
Expiry date	Mar 21, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2483/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

There is provided a process for producing an organic-inorganic hybrid glassy material, including the sequential steps of (a) concentrating a starting sol of an organic-inorganic hybrid glassy material, thereby yielding a precursor material having meltability; (b) melting the precursor material; (c) subjecting a product of the step (b) to a heating treatment under reduced pressure; and (d) subjecting a product of the step (c) to a high-temperature heat treatment at 300° C. or higher.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.