GB403233A - Manufacture of weatherproof luminous substances - Google Patents
Manufacture of weatherproof luminous substancesInfo
- Publication number
- GB403233A GB403233A GB1418/33A GB141833A GB403233A GB 403233 A GB403233 A GB 403233A GB 1418/33 A GB1418/33 A GB 1418/33A GB 141833 A GB141833 A GB 141833A GB 403233 A GB403233 A GB 403233A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- oxide
- exciter
- zinc
- weatherproof
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
- B26B21/08—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving changeable blades
- B26B21/14—Safety razors with one or more blades arranged transversely to the handle
- B26B21/20—Safety razors with one or more blades arranged transversely to the handle involving blades with more than two cutting edges; involving disc blades
-
- 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
- C09K11/0805—Chalcogenides
- C09K11/0816—Chalcogenides with alkaline earth metals
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/16—Oxides
- C30B29/22—Complex oxides
- C30B29/26—Complex oxides with formula BMe2O4, wherein B is Mg, Ni, Co, Al, Zn, or Cd and Me is Fe, Ga, Sc, Cr, Co, or Al
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Luminescent Compositions (AREA)
Abstract
Weatherproof phosphorescent or fluorescent substances are obtained by subjecting to a high temperature a mixture of very pure aluminium oxide with a very pure oxide of calcium, magnesium, zinc or beryllium in the presence of an exciter metal, the latter being employed in such amount that the finished product does not contain more than 0.5 per cent thereof. A lower limit of 0.05 per cent is referred to. In place of the metal oxides, decomposable compounds of the metals, e.g. ammonia alum, magnesium sulphate, may be employed. The purity should be such as is used in the determination of atomic weights. As exciter metals, manganese, nickel, cobalt, cerium, uranium, iron, copper, rubidium and bismuth are specified. When necessary, the exciter metal compound is converted into a difficultly volatilizable compound, for instance, a zincate, titanate or ortho-zinc titanate. Such conversion may be effected prior to admixture with the other ingredients, or during the main reaction, by adding say zinc or titanium oxide to the mixture. The aluminium oxide and other oxide are preferably used approximately in the proportions existing in spinels, and the mixture may be heated to about 1000 DEG C. until sintered, or to about 2000 DEG C. or more until fused. The mixture may be introduced into the oxyhydrogen, acetylene or coal-gas flame of a Verneuil furnace. Substances lowering the sintering temperature of the mixture may be added thereto.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE403233X | 1908-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB403233A true GB403233A (en) | 1933-12-21 |
Family
ID=6416110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1418/33A Expired GB403233A (en) | 1932-01-14 | 1933-01-16 | Manufacture of weatherproof luminous substances |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR403233A (en) |
| GB (1) | GB403233A (en) |
-
1909
- 1909-05-22 FR FR403233D patent/FR403233A/en not_active Expired
-
1933
- 1933-01-16 GB GB1418/33A patent/GB403233A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR403233A (en) | 1909-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2402760A (en) | Luminescent material | |
| DE3333406C2 (en) | ||
| US2370443A (en) | Nonmetallic electric resistance material and process for producing same | |
| US3259509A (en) | Refractory materials and method of making same | |
| US2569225A (en) | Method of forming uranium monocarbide | |
| US3597365A (en) | Phosphor | |
| US2312266A (en) | Fluorescent material and process of making same | |
| GB403233A (en) | Manufacture of weatherproof luminous substances | |
| US3351438A (en) | Tungsten incandescent body of large crystalline structure and process for its production | |
| US2577161A (en) | Cerium activated calcium-magnesium silicates | |
| US3387971A (en) | Master alloy consisting essentially of molybdenum-vanadium-aluminum | |
| US2116167A (en) | Process of preparing a phosphorescent material | |
| US2218750A (en) | Process for making fluorescent screen material for cathode ray tubes | |
| GB656059A (en) | Improvements in pyrophoric compositions of zirconium and lead and method of producing same | |
| US2872726A (en) | Sintered hard compositions | |
| US2196082A (en) | Method of preparing luminescent material | |
| US935863A (en) | Alloy and process for its production. | |
| US1054901A (en) | Compounds containing silicon and nitrogen and process of producing such compounds. | |
| GB511076A (en) | Improvements in or relating to processes for the manufacture of anodes for use in the production of aluminium, beryllium, magnesium, or alkali earth metals by electrolysis of fused starting materials | |
| US2727866A (en) | Phosphor containing gallium | |
| GB312311A (en) | Production of heat absorbing glasses and batches therefor | |
| US1635055A (en) | Alloy filament | |
| US2091950A (en) | Process for the preparation of alloys containing boron | |
| GB548997A (en) | Improvements in and relating to fluorescent materials and processes of making the same | |
| SU142429A1 (en) | Method for producing intermetallic compound MnBi |