Suspension of a magnesium silicate, method for making same and use thereof as a phosphor
US11286422B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Jun 30, 2015 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | May 22, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/592
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The silicate of magnesium and of barium, strontium or calcium of the invention is characterized in that it is in the form of a suspension of solid crystallized particles in a liquid phase, said particles having a mean size between 0.1 μm and 1 μm. It is prepared by spray-drying a liquid mixture comprising compounds of magnesium, of silicium and of at least one first element chosen from barium, strontium and calcium, by submitting the dried mixture to a first calcination in air and to a second calcination in a reducing atmosphere and by wet milling the calcined mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.