GB650491A - Luminescent compounds - Google Patents

Luminescent compounds

Info

Publication number
GB650491A
GB650491A GB1304748A GB1304748A GB650491A GB 650491 A GB650491 A GB 650491A GB 1304748 A GB1304748 A GB 1304748A GB 1304748 A GB1304748 A GB 1304748A GB 650491 A GB650491 A GB 650491A
Authority
GB
United Kingdom
Prior art keywords
activator
luminescent
calcium sulphate
luminescent compounds
thorium
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
GB1304748A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB1304748A priority Critical patent/GB650491A/en
Publication of GB650491A publication Critical patent/GB650491A/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
    • C09K11/0888—Sulfates

Landscapes

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

Abstract

650,491. Luminescent materials. BRITISH THOMSON - HOUSTON CO., Ltd., and WELLS, R. S. May 12, 1948, No. 13047. [Class 39 (i)] A luminescent material comprising a matrix consisting solely of calcium sulphate is activated with one of the metals manganese, cadmium, bismuth, vanadium, cerium, silver, titanium, zirconium, thorium, tellurium, aluminium, mercury, nickel. The required amount of calcium sulphate is mixed with, for example, 2¢ per cent by weight of a compound of the required activator and the mixture fired at a temperature between 1100‹ C. and 1150‹ C. The Specification lists various compounds that may be utilized together with the percentage content of activator and the corresponding luminescent colours. Specifications. 503,769, 551,070, 601,697 and 650,459 are referred to.
GB1304748A 1948-05-12 1948-05-12 Luminescent compounds Expired GB650491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1304748A GB650491A (en) 1948-05-12 1948-05-12 Luminescent compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1304748A GB650491A (en) 1948-05-12 1948-05-12 Luminescent compounds

Publications (1)

Publication Number Publication Date
GB650491A true GB650491A (en) 1951-02-28

Family

ID=10015823

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1304748A Expired GB650491A (en) 1948-05-12 1948-05-12 Luminescent compounds

Country Status (1)

Country Link
GB (1) GB650491A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007394A (en) * 1975-04-07 1977-02-08 General Electric Company Alkali metal alkaline earth metal sulfate phosphor activated with cerium and terbium and lamp containing same
US4446048A (en) * 1980-11-25 1984-05-01 Thorn Emi Limited Luminescent materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007394A (en) * 1975-04-07 1977-02-08 General Electric Company Alkali metal alkaline earth metal sulfate phosphor activated with cerium and terbium and lamp containing same
US4446048A (en) * 1980-11-25 1984-05-01 Thorn Emi Limited Luminescent materials

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