GB498556A - Improvements in and relating to methods of preparing luminescent materials - Google Patents
Improvements in and relating to methods of preparing luminescent materialsInfo
- Publication number
- GB498556A GB498556A GB35667/37A GB3566737A GB498556A GB 498556 A GB498556 A GB 498556A GB 35667/37 A GB35667/37 A GB 35667/37A GB 3566737 A GB3566737 A GB 3566737A GB 498556 A GB498556 A GB 498556A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silicate
- luminescent materials
- dec
- heated
- small quantity
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
498,556. Luminescent materials. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 23, 1937, No. 35667. Convention date, Dec. 30, 1936. [Class 98 (i)] Luminescent materials which may exhibit fluorescence or both fluorescence and phosphorescence are prepared by mixing a metal compound, an organic silicate, and an activator in a liquid medium, removing volatile constituents to form a gel, drying, grinding, and firing the product. For example, an organic silicate such as ethyl silicate is mixed with zinc nitrate in an alcoholic solution containing a small quantity of hydrochloric acid, and a small quantity of manganese nitrate is added. The mixture is heated to form a friable solid which is then crushed and heated to 110 to 140‹ C. to remove the volatile matter, ground, reheated to 350‹ C., reground, and fired at 1000 to 1300‹ C. The proportions used may be varied between equimolecular quantities of ZnO and SiO2 and equivalent quantities. In place of ethyl silicate, methyl, propyl, or amyl silicate may be used and the zinc salt may be replaced wholly or in part by salts of magnesium, cadmium, or beryllium. Specification 457,126 is referred to. The Specification as open to inspection under Sect. 91 describes also the use of mixtures in which one of the constituents is in the form of a colloidal gel. This subjectmatter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US498556XA | 1936-12-30 | 1936-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB498556A true GB498556A (en) | 1939-01-10 |
Family
ID=21962108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35667/37A Expired GB498556A (en) | 1936-12-30 | 1937-12-23 | Improvements in and relating to methods of preparing luminescent materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB498556A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111247098A (en) * | 2017-10-27 | 2020-06-05 | 株式会社普利司通 | Silica-based nanomaterials as a substitute for ZnO in rubber compounds and their preparation |
-
1937
- 1937-12-23 GB GB35667/37A patent/GB498556A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111247098A (en) * | 2017-10-27 | 2020-06-05 | 株式会社普利司通 | Silica-based nanomaterials as a substitute for ZnO in rubber compounds and their preparation |
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