GB745044A - Improvements in and relating to luminescent calcium halophosphate phosphors - Google Patents
Improvements in and relating to luminescent calcium halophosphate phosphorsInfo
- Publication number
- GB745044A GB745044A GB2953951A GB2953951A GB745044A GB 745044 A GB745044 A GB 745044A GB 2953951 A GB2953951 A GB 2953951A GB 2953951 A GB2953951 A GB 2953951A GB 745044 A GB745044 A GB 745044A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oxide
- calcium
- antimony
- firing
- chloride
- 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
- C09K11/70—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus
- C09K11/72—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus also containing halogen, e.g. halophosphates
- C09K11/73—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus also containing halogen, e.g. halophosphates also containing alkaline earth metals
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
- Cosmetics (AREA)
Abstract
745,044. Luminescent materials. THORN ELECTRICAL INDUSTRIES, Ltd. Dec. 17, 1951, No. 29539/51. Addition to 691,127. Class 39 (1). The method of preparing a luminescent calcium halophosphate phosphor according to the parent Specification 691,127 is modified and includes the steps of intimately mixing, as powders, ammonium chloride, calcium oxide and/or a calcium compound which is decomposed to the oxide on firing, secondary calcium phosphate, and one or more of the group comprising calcium antimonate, antimony phosphate, antimony chloride, antimony oxide, antimonic acid and antimony compounds which are decomposed to the oxide on firing, substantially all chloride present being in the form of ammonium chloride, and firing the mixture. The calcium compound referred to can be other than the carbonate, in which case calcium fluoride is added to the mixture and antimony fluoride is a possible addition. In the first of the above cases one or more of the group comprising manganese antimonate, carbonate, phosphate, chloride, oxide and compounds which are decomposed to the oxide on firing are also added. In the second of the above cases manganese fluoride is a possible addition. The preparation of the materials is on the lines described in the parent Specification. Specification 684,025 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2953951A GB745044A (en) | 1951-12-17 | 1951-12-17 | Improvements in and relating to luminescent calcium halophosphate phosphors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2953951A GB745044A (en) | 1951-12-17 | 1951-12-17 | Improvements in and relating to luminescent calcium halophosphate phosphors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB745044A true GB745044A (en) | 1956-02-22 |
Family
ID=10293132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2953951A Expired GB745044A (en) | 1951-12-17 | 1951-12-17 | Improvements in and relating to luminescent calcium halophosphate phosphors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB745044A (en) |
-
1951
- 1951-12-17 GB GB2953951A patent/GB745044A/en not_active Expired
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