GB691133A - Improvements in the preparation of halophosphate phosphors - Google Patents
Improvements in the preparation of halophosphate phosphorsInfo
- Publication number
- GB691133A GB691133A GB31169/50A GB3116950A GB691133A GB 691133 A GB691133 A GB 691133A GB 31169/50 A GB31169/50 A GB 31169/50A GB 3116950 A GB3116950 A GB 3116950A GB 691133 A GB691133 A GB 691133A
- Authority
- GB
- United Kingdom
- Prior art keywords
- calcium
- antimony
- manganese
- antimonate
- firing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/74—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing arsenic, antimony or bismuth
- C09K11/75—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing arsenic, antimony or bismuth containing antimony
- C09K11/76—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing arsenic, antimony or bismuth containing antimony also containing phosphorus and halogen, e.g. halophosphates
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
691,133. Luminescent materials. T H O R N ELECTRICAL INDUSTRIES, Ltd. Dec. 21, 1950 [Dec. 31, 1949], No. 31169/50. Class 39(i). The firing ingredients of an antimony activated calcium halophosphate contain an antimony compound which is in a higher state of oxidation than antimony trioxide, and the firing is carried out in an inert atmosphere. The compound may be one or more of antimony tetroxide, calcium metaantimonate, calcium pyro-antimonate, manganese meta-antimonate, manganese pyro-antimonate, calcium or manganese fluo-antimonate or antimonic acid. Manganese is introduced as an additional activator. The inert atmosphere my be nitrogen, carbon dioxide, argon, helium, neon, krypton or xenon. The firing may be in crucibles which proceed slowly through an oven at 1900-1975‹C, a stream of the inert gas moving in the opposite direction. Comparison is made of a material prepared from calcium carbonate, manganese carbonate, calcium fluoride, ammonium chloride, secondary calcium phosphate and antimony trioxide with a similar mixture using antimony tetroxide. Antimony trichloride is stated to act as a flux. Specifications 684,025 and 691,127 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US691133XA | 1949-12-31 | 1949-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB691133A true GB691133A (en) | 1953-05-06 |
Family
ID=22086831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31169/50A Expired GB691133A (en) | 1949-12-31 | 1950-12-21 | Improvements in the preparation of halophosphate phosphors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB691133A (en) |
-
1950
- 1950-12-21 GB GB31169/50A patent/GB691133A/en not_active Expired
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