GB609711A - Improvements in and relating to fluorescent material - Google Patents

Improvements in and relating to fluorescent material

Info

Publication number
GB609711A
GB609711A GB15312/44A GB1531244A GB609711A GB 609711 A GB609711 A GB 609711A GB 15312/44 A GB15312/44 A GB 15312/44A GB 1531244 A GB1531244 A GB 1531244A GB 609711 A GB609711 A GB 609711A
Authority
GB
United Kingdom
Prior art keywords
phosphate
fluorescent material
aug
powdered
prepared
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
GB15312/44A
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
Publication of GB609711A publication Critical patent/GB609711A/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
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7715—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing cerium
    • C09K11/7723—Phosphates
    • C09K11/7724—Phosphates with alkaline earth metals

Landscapes

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

Abstract

609,711. Luminescent materials. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 11, 1944, No. 15312. Convention date, Aug. 14, 1943. [Class 39 (i)] Fluorescent material is prepared from an alkaline earth metal phosphate containing 1 to 5 per cent manganese and 2 to 10 per cent cerium, by heating the powdered phosphate in a reducing atmosphere to a temperature of 1000-1200‹ C. In one particular example a cerium activated phosphate prepared as described in U.S.A. Specification 2,306,567 is powdered and suspended in a solution of magnesium nitrate or phosphate and evaporated to dryness. The resulting powder is then fired in a moist reducing atmosphere of hydrogen at a temperature of 1000‹ to 1200‹ C.
GB15312/44A 1943-08-14 1944-08-11 Improvements in and relating to fluorescent material Expired GB609711A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US609711XA 1943-08-14 1943-08-14

Publications (1)

Publication Number Publication Date
GB609711A true GB609711A (en) 1948-10-06

Family

ID=22032869

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15312/44A Expired GB609711A (en) 1943-08-14 1944-08-11 Improvements in and relating to fluorescent material

Country Status (1)

Country Link
GB (1) GB609711A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750344A (en) * 1951-01-06 1956-06-12 Hartford Nat Bank & Trust Co Luminescent material
US2835636A (en) * 1954-01-07 1958-05-20 Westinghouse Electric Corp Cerium-activated magnesium metaphosphate phosphor, with and without manganese
DE1150774B (en) * 1955-07-22 1963-06-27 Thorn Electrical Ind Ltd Alkaline earth phosphate phosphor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750344A (en) * 1951-01-06 1956-06-12 Hartford Nat Bank & Trust Co Luminescent material
US2835636A (en) * 1954-01-07 1958-05-20 Westinghouse Electric Corp Cerium-activated magnesium metaphosphate phosphor, with and without manganese
DE1150774B (en) * 1955-07-22 1963-06-27 Thorn Electrical Ind Ltd Alkaline earth phosphate phosphor

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