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GB512154A - Improvements in luminescent materials - Google Patents

Improvements in luminescent materials

Info

Publication number
GB512154A
GB512154A GB763938A GB763938A GB512154A GB 512154 A GB512154 A GB 512154A GB 763938 A GB763938 A GB 763938A GB 763938 A GB763938 A GB 763938A GB 512154 A GB512154 A GB 512154A
Authority
GB
United Kingdom
Prior art keywords
borate
phosphate
activator
radical
phosphates
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
Application number
GB763938A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority to GB763938A priority Critical patent/GB512154A/en
Publication of GB512154A publication Critical patent/GB512154A/en
Expired legal-status Critical Current

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
    • C09K11/0838—Aluminates; Silicates
    • 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
    • C09K11/0855—Phosphates
    • 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
    • C09K11/0877—Borates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)
  • Luminescent Compositions (AREA)

Abstract

512,154. Glass manufacture. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand-Ges. fur Elektrische Gluhlampen). March 11, 1938, Nos. 7639, 34376 and 36685. [Class 56] [Also in Group XL] Luminescent materials for electric discharge lamps consist of a matrix comprising the borate and/or phosphate of one or more of Li, Na, K, Rb, Cs, Be, Mg, Zn, Cd, Ca, Sr, Ba, Al and La with an activator consisting of the borate and/or phosphate of -Ag, Tl, Sn, Pb, Ce, or Sb, more than three molecular per cent. of the material being formed by the activator. The colour obtained by different mixtures is set out in a table. Manganese may be added as an activator to give orange-red or red light. When manganese is used, up to 50 per cent. of the borate or phosphate radical in the material may be replaced by a silicate radical with change of colour towards yellow. The material may be prepared by heating the component borate and/or phosphates, the activators being introduced as borates or phosphates; or the metals may be introduced as oxides, carbonates or oxalates and converted by phosphoric or boric acid or ammonium phosphate. The material may be melted together or sintered and the salts may be present as metaborates or metaphosphates. If the materials are melted and obtained in crystalline or vitreous form the phosphate or borate radical should be in proportion greater than corresponding to metaphosphate or metaborate. Specifications 460,210 and 476,945 are referred to. According to the first Provisional Specification the matrix may consist of the phosphate and/or borate of any metal in the first three groups of the periodic table.
GB763938A 1938-03-11 1938-03-11 Improvements in luminescent materials Expired GB512154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB763938A GB512154A (en) 1938-03-11 1938-03-11 Improvements in luminescent materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB763938A GB512154A (en) 1938-03-11 1938-03-11 Improvements in luminescent materials

Publications (1)

Publication Number Publication Date
GB512154A true GB512154A (en) 1939-08-30

Family

ID=9836959

Family Applications (1)

Application Number Title Priority Date Filing Date
GB763938A Expired GB512154A (en) 1938-03-11 1938-03-11 Improvements in luminescent materials

Country Status (1)

Country Link
GB (1) GB512154A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2417038A (en) * 1944-10-25 1947-03-04 Sylvania Electric Prod Fluorescent material
US2436774A (en) * 1943-09-24 1948-02-24 Dow Chemical Co Method and catalysts for the production of alkenyl cyanides
US2447322A (en) * 1943-11-04 1948-08-17 Gen Electric Infrared-responsive phosphors
US2476676A (en) * 1943-08-06 1949-07-19 Gen Electric Cadmium phosphate phosphors
US2476654A (en) * 1945-05-05 1949-07-19 Gen Electric Preparation of alkaline earth fluorophosphate phosphors by coprecipitation
DE941741C (en) * 1943-03-24 1956-04-19 Patra Patent Treuhand Artificial fluorescent substance
US2750344A (en) * 1951-01-06 1956-06-12 Hartford Nat Bank & Trust Co Luminescent material
US2921912A (en) * 1954-11-01 1960-01-19 Westinghouse Electric Corp Magnesium-calcium fluorophosphate
DE1077331B (en) * 1956-03-02 1960-03-10 Sylvania Electric Prod Fluorescent material for high pressure mercury vapor discharge lamps
US3014877A (en) * 1959-06-17 1961-12-26 Thorn Electrical Ind Ltd Luminescent materials
DE1124150B (en) * 1956-07-04 1962-02-22 Philips Nv Fluorescent lamp and process for making the fluorescent material
DE1126030B (en) * 1956-07-04 1962-03-22 Philips Nv Fluorescent lamp with an orthophosphate phosphor and process for the production of the phosphor
DE1150774B (en) * 1955-07-22 1963-06-27 Thorn Electrical Ind Ltd Alkaline earth phosphate phosphor
US3104226A (en) * 1961-05-29 1963-09-17 Rca Corp Short luminescence delay time phosphors
US3110680A (en) * 1956-07-04 1963-11-12 Philips Corp Orthophosphate phosphor compositions
FR2358457A1 (en) * 1976-07-13 1978-02-10 Philips Nv LUMINESCENT SCREEN EQUIPPED WITH A RARE EARTH BORATE

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE941741C (en) * 1943-03-24 1956-04-19 Patra Patent Treuhand Artificial fluorescent substance
US2476676A (en) * 1943-08-06 1949-07-19 Gen Electric Cadmium phosphate phosphors
US2436774A (en) * 1943-09-24 1948-02-24 Dow Chemical Co Method and catalysts for the production of alkenyl cyanides
US2447322A (en) * 1943-11-04 1948-08-17 Gen Electric Infrared-responsive phosphors
US2417038A (en) * 1944-10-25 1947-03-04 Sylvania Electric Prod Fluorescent material
US2476654A (en) * 1945-05-05 1949-07-19 Gen Electric Preparation of alkaline earth fluorophosphate phosphors by coprecipitation
US2750344A (en) * 1951-01-06 1956-06-12 Hartford Nat Bank & Trust Co Luminescent material
US2921912A (en) * 1954-11-01 1960-01-19 Westinghouse Electric Corp Magnesium-calcium fluorophosphate
DE1150774B (en) * 1955-07-22 1963-06-27 Thorn Electrical Ind Ltd Alkaline earth phosphate phosphor
DE1077331B (en) * 1956-03-02 1960-03-10 Sylvania Electric Prod Fluorescent material for high pressure mercury vapor discharge lamps
DE1124150B (en) * 1956-07-04 1962-02-22 Philips Nv Fluorescent lamp and process for making the fluorescent material
DE1126030B (en) * 1956-07-04 1962-03-22 Philips Nv Fluorescent lamp with an orthophosphate phosphor and process for the production of the phosphor
US3110680A (en) * 1956-07-04 1963-11-12 Philips Corp Orthophosphate phosphor compositions
US3014877A (en) * 1959-06-17 1961-12-26 Thorn Electrical Ind Ltd Luminescent materials
US3104226A (en) * 1961-05-29 1963-09-17 Rca Corp Short luminescence delay time phosphors
FR2358457A1 (en) * 1976-07-13 1978-02-10 Philips Nv LUMINESCENT SCREEN EQUIPPED WITH A RARE EARTH BORATE

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