Glasses containing fluorine, their preparation and their application
US4328318A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1980 |
| Grant date | May 4, 1982 |
| Priority date | — |
| Expiry date | Mar 20, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S501/904
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Glasses containing fluorine. These glasses are characterized by the fact that they contain at least 25% in moles, approximately, of a fluoride or a mixture of fluorides MX(X.sub.1).sub.2, in which: PA1 X and X.sub.1 each represent a fluorine atom, PA1 and M then represents a metal chosen from among the group consisting of PA1 gallium, iron, chromium, vanadium, indium, and the rare earths, PA1 or X represents an oxygen atom, PA1 X.sub.1 represents a fluorine atom, PA1 and M then represents a titanium atom, it being understood that the said glasses contain no hydrofluoric acid as a network former and that, in the case in which M represents a gallium or indium atom, the glasses do not contain more than 15% in moles of BaPO.sub.3 F. Application notably in obtaining glasses containing various cations conferring particular optical or magneto-optical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.