GB473715A - Improved method of preparing phosphorescent material - Google Patents
Improved method of preparing phosphorescent materialInfo
- Publication number
- GB473715A GB473715A GB19213/36A GB1921336A GB473715A GB 473715 A GB473715 A GB 473715A GB 19213/36 A GB19213/36 A GB 19213/36A GB 1921336 A GB1921336 A GB 1921336A GB 473715 A GB473715 A GB 473715A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphide
- filtering
- distilled water
- prepared
- twice distilled
- 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
- C09K11/56—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing sulfur
- C09K11/562—Chalcogenides
- C09K11/565—Chalcogenides with zinc cadmium
Abstract
Pure zinc sulphide is prepared by dissolving commercially pure zinc sulphate in twice distilled water, electrolysing with platinum electrodes for two weeks at two volts, boiling several times with adsorption carbon, filtering, adding ammonia dissolved in twice distilled water, filtering, and introducing hydrogen sulphide, prepared from iron sulphide and hydrochloric acid and washed in dilute hydrochloric acid water, potassium hydrosulphide, and twice distilled water. A small quantity of hydrogen sulphide is first introduced and the precipitate is filtered off, dried, heated with a flux to 400 DEG C., and tested by means of cathode rays. The partial precipitation is continued until the blue luminescence does not vary with further samples. The whole quantity of zinc salt is then precipitated as zinc sulphide, and after filtering and drying heated with pure sulphur in a hydrogen atmosphere to 400 DEG C. Cadmium sulphide may be similarly prepared, the control test being made on precipitated samples mixed with appropriate quantities of the pure zinc sulphide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE473715X | 1935-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB473715A true GB473715A (en) | 1937-10-19 |
Family
ID=6541610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19213/36A Expired GB473715A (en) | 1935-07-30 | 1936-07-10 | Improved method of preparing phosphorescent material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB473715A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2541384A (en) * | 1941-07-29 | 1951-02-13 | Hartford Nat Bank & Trust Co | Method of making a luminescent zinc sulfide |
| US2732347A (en) * | 1956-01-24 | Luminescent zinc | ||
| EP0125028A2 (en) * | 1983-04-08 | 1984-11-14 | E.I. Du Pont De Nemours And Company | Autoradiogram marking process |
-
1936
- 1936-07-10 GB GB19213/36A patent/GB473715A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2732347A (en) * | 1956-01-24 | Luminescent zinc | ||
| US2541384A (en) * | 1941-07-29 | 1951-02-13 | Hartford Nat Bank & Trust Co | Method of making a luminescent zinc sulfide |
| EP0125028A2 (en) * | 1983-04-08 | 1984-11-14 | E.I. Du Pont De Nemours And Company | Autoradiogram marking process |
| EP0125028A3 (en) * | 1983-04-08 | 1987-04-29 | E.I. Du Pont De Nemours And Company | Autoradiogram marking process |
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