Indium-based fluoride glasses and their preparation
US4749666A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1986 |
| Grant date | Jun 7, 1988 |
| Priority date | — |
| Expiry date | Dec 22, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S501/904
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Fluoride glasses comprise at least one fluoride of each of the following five categories: ______________________________________ Fluorides Molar amount % ______________________________________ M.sup.1 F.sub.3 u M.sup.2 F.sub.4 v M.sup.3 F.sub.2 w M.sup.4 F.sub.3 x M.sup.5 F.sub.2 y ______________________________________ wherein M.sup.1 represents In or Ga; M.sup.2 represents Th or U; M.sup.3 represents Ba or Pb; M.sup.4 represents Y, Yb or Lu; M.sup.5 represents Zn or Mn; and wherein u=25-35; v=5-12; w=25-35; x=5-12; and y=15-30; and optionally, at least one adjuvant or dopant present in a molar percent, z, wherein z=0-4. This composition is capable of providing, by casting in the molten state, followed by cooling, pieces of glass having a thickness greater than 10 mm. The specification also describes a method of producing these fluoride glasses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.