Feedstock gel and method of making glass-ceramic articles from the feedstock gel
US11130700B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 2019 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | Jun 12, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/656
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of making a glass-ceramic article includes synthesizing a feedstock gel that includes a base oxide network comprising Na2O, CaO, and SiO2, in which a molar ratio of Na2O:CaO:SiO2 in the gel is 1:2:3, and then converting the feedstock gel into a glass-ceramic article such as a container or a partially-formed container. The conversion of the feedstock gel into a glass-ceramic container may be performed at a temperature that does not exceed 900° C. and may include the steps of pressing the feedstock gel into a compressed solid green-body, sintering the green-body into a solid monolithic body of a glass-ceramic material, deforming the solid monolithic glass-ceramic body into a glass-ceramic preform, and cooling the preform. A glass-ceramic article having a glass-ceramic material that has a molar ratio of Na2O:CaO:SiO2 that is 1:2:3 is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.