GB1205340A - Luminescent materials - Google Patents
Luminescent materialsInfo
- Publication number
- GB1205340A GB1205340A GB34889/68A GB3488968A GB1205340A GB 1205340 A GB1205340 A GB 1205340A GB 34889/68 A GB34889/68 A GB 34889/68A GB 3488968 A GB3488968 A GB 3488968A GB 1205340 A GB1205340 A GB 1205340A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polysulphide
- phosphor
- oxide
- july
- washed
- 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
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/7767—Chalcogenides
- C09K11/7769—Oxides
- C09K11/7771—Oxysulfides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/288—Sulfides
- C01F17/294—Oxysulfides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Luminescent Compositions (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
1,205,340. Luminescent materials. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 22 July, 1968 [25 July, 1967], No. 34889/68. Heading C4S. A method of preparing a rare earth activated oxysulphide phosphor defined as A( 2-x )B x .O 2 S where A is Y, Gd or La, B is an element of atomic number 58 to 70 except 64 and 0À2 # x # 0.0002 comprises heating at 500-1500 C. for -4 hours a dry mixture of an oxide of A and an oxide of B or a mixed oxide of A and B together with a compound or combination of substances which on heating yield a polysulphide of Na, K or Ba or the polysulphide, the polysulphide being molten at the heating temperature. Mixed oxides of Y and Tb, Y and Eu, Y and Er, La and Eu are heated with Na, K or Ba sulphide, sulphite, carbonate or oxalate and S or with thiosulphate or disulphide. The phosphor is washed to remove all impurities and may be reheated at 1100-1500 C. in N 2 or in air if C or ZnS is added to prevent oxidation of the oxysulphide, it is then washed in acetic acid. The phosphor is excited by U.V. light or electrons and used in lamps and C.R.T.s.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6710227A NL6710227A (en) | 1967-07-25 | 1967-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1205340A true GB1205340A (en) | 1970-09-16 |
Family
ID=19800788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34889/68A Expired GB1205340A (en) | 1967-07-25 | 1968-07-22 | Luminescent materials |
Country Status (9)
| Country | Link |
|---|---|
| AT (1) | AT286468B (en) |
| BE (1) | BE718447A (en) |
| DE (1) | DE1767946A1 (en) |
| ES (1) | ES356405A1 (en) |
| FR (1) | FR1580544A (en) |
| GB (1) | GB1205340A (en) |
| IL (1) | IL30415A0 (en) |
| NL (1) | NL6710227A (en) |
| NO (1) | NO120436B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9422473B2 (en) | 2006-06-27 | 2016-08-23 | Swiss Authentication Research And Development Ag | Luminescent composition |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0966504B1 (en) | 1997-03-05 | 2005-11-23 | Honeywell Specialty Chemicals Seelze GmbH | Non-green anti-stokes luminescent substance |
-
1967
- 1967-07-25 NL NL6710227A patent/NL6710227A/xx unknown
-
1968
- 1968-07-04 DE DE19681767946 patent/DE1767946A1/en active Pending
- 1968-07-22 GB GB34889/68A patent/GB1205340A/en not_active Expired
- 1968-07-22 NO NO2892/68A patent/NO120436B/no unknown
- 1968-07-22 AT AT705268A patent/AT286468B/en not_active IP Right Cessation
- 1968-07-23 IL IL30415A patent/IL30415A0/en unknown
- 1968-07-23 BE BE718447D patent/BE718447A/xx not_active IP Right Cessation
- 1968-07-23 ES ES356405A patent/ES356405A1/en not_active Expired
- 1968-07-25 FR FR1580544D patent/FR1580544A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9422473B2 (en) | 2006-06-27 | 2016-08-23 | Swiss Authentication Research And Development Ag | Luminescent composition |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1580544A (en) | 1969-09-05 |
| DE1767946A1 (en) | 1971-09-30 |
| ES356405A1 (en) | 1970-04-01 |
| NO120436B (en) | 1970-10-19 |
| NL6710227A (en) | 1969-01-28 |
| BE718447A (en) | 1969-01-23 |
| IL30415A0 (en) | 1968-09-26 |
| AT286468B (en) | 1970-12-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| 49R | Reference inserted (sect. 9/1949) | ||
| PCNP | Patent ceased through non-payment of renewal fee |