Chemical strengthening method
US4483700A · kind A · utility
91Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1983 |
| Grant date | Nov 20, 1984 |
| Priority date | — |
| Expiry date | Aug 15, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C21/002
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of chemically strengthening a sodium silicate glass is disclosed wherein ions from the glass are exchanged for larger ions, e.g. Na.sup.+ for K.sup.+, at a temperature above the glass strain point, subsequently the same exchange is carried out below the glass strain point, and the glass article is maintained throughout the process in a single, temperature-programmed bath containing the large exchangeable ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.