GB652313A - Improvements relating to the production of luminescent materials - Google Patents
Improvements relating to the production of luminescent materialsInfo
- Publication number
- GB652313A GB652313A GB1063148A GB1063148A GB652313A GB 652313 A GB652313 A GB 652313A GB 1063148 A GB1063148 A GB 1063148A GB 1063148 A GB1063148 A GB 1063148A GB 652313 A GB652313 A GB 652313A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grams
- hours
- silica
- coating
- mixed
- 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
- C09K11/59—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing silicon
Abstract
652,313. Luminescent materials. LEITERSDORF, R., JONES, J., and DOWN, H. L. April 16, 1948, No. 10631. [Class 39 (i)] In the method of preparing a luminescent powder for coating the walls of discharge tubes which comprises the firing together of zinc and silica as major constituents, a small amount of beryllium compound as colour modifier and a minor proportion of an activator such as manganous nitrate, the said beryllium compound includes between 1 per cent and 2 per cent of a strontium or calcium compound or a mixture thereof. In the example given, 560 grams of zinc oxide are mixed with 420 grams of silica and 20 grams of mixed BeO-SrO-CaO and the whole made into a stiff paste with 250 c.cs. manganous nitrate solution and distilled water. The paste is dried at 250‹ C. and then ignited to 600‹ C. for 2 hours. Grinding in a porcelain ball-mill for 6 hours then follows and the resulting powder is heated to 1130‹Œ 5‹ C. for 3 hours. The material applied as a coating on a discharge tube gives an orangecoloured fluorescence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1063148A GB652313A (en) | 1948-04-16 | 1948-04-16 | Improvements relating to the production of luminescent materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1063148A GB652313A (en) | 1948-04-16 | 1948-04-16 | Improvements relating to the production of luminescent materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB652313A true GB652313A (en) | 1951-04-18 |
Family
ID=9971434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1063148A Expired GB652313A (en) | 1948-04-16 | 1948-04-16 | Improvements relating to the production of luminescent materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB652313A (en) |
-
1948
- 1948-04-16 GB GB1063148A patent/GB652313A/en not_active Expired
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