GB591450A - Improvements in and relating to luminescent materials - Google Patents
Improvements in and relating to luminescent materialsInfo
- Publication number
- GB591450A GB591450A GB3257/44A GB325744A GB591450A GB 591450 A GB591450 A GB 591450A GB 3257/44 A GB3257/44 A GB 3257/44A GB 325744 A GB325744 A GB 325744A GB 591450 A GB591450 A GB 591450A
- Authority
- GB
- United Kingdom
- Prior art keywords
- complex
- mixture
- oxide
- amount
- fired
- 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
591,450. Luminescent materials. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 22, 1944, No. 3257. Convention date, . Feb. 25, 1943. Drawings to Specification. [Class 39 (i)] A luminescent material is produced by preparing a mixture of zinc oxide, beryllium oxide manganese carbonate and silicic acid, in proportions such that the mixture, after being fired, will have the last two constituents completely converted to manganese oxide and silica and will be a complex having a molar ratio (ZnO+BeO): Si O2 of from 1.8: 1 to 1.9 : 1, the ratio ZnO : Si02 being from 1.6 : 1 to 1.8 : 1 and the amount of manganese oxide present being not more than 4 per cent of the total weight of the complex. The mixture is then fired at a temperature.of 1220-1260‹. C. An excess amount of beryllium oxide or magnesia may be added. This surplus amount will be uncombined chemically but will be dispersed through the complex. The firing period should be two hours. Specification 546,151 is referred to..
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US591450XA | 1943-02-25 | 1943-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB591450A true GB591450A (en) | 1947-08-19 |
Family
ID=22021118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3257/44A Expired GB591450A (en) | 1943-02-25 | 1944-02-22 | Improvements in and relating to luminescent materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB591450A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE843123C (en) * | 1949-09-29 | 1952-07-03 | Philips Patentverwaltung | Luminous screen for voting indicator tubes |
-
1944
- 1944-02-22 GB GB3257/44A patent/GB591450A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE843123C (en) * | 1949-09-29 | 1952-07-03 | Philips Patentverwaltung | Luminous screen for voting indicator tubes |
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