GB691539A - Improvements in luminescent materials - Google Patents

Improvements in luminescent materials

Info

Publication number
GB691539A
GB691539A GB2007250A GB2007250A GB691539A GB 691539 A GB691539 A GB 691539A GB 2007250 A GB2007250 A GB 2007250A GB 2007250 A GB2007250 A GB 2007250A GB 691539 A GB691539 A GB 691539A
Authority
GB
United Kingdom
Prior art keywords
luminescent materials
per cent
oxide
calcium
calcium carbonate
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
GB2007250A
Inventor
Peter Whitten Ranby
Stanley Thomas Henderson
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.)
Thorn Electrical Industries Ltd
Original Assignee
Thorn Electrical Industries 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 Thorn Electrical Industries Ltd filed Critical Thorn Electrical Industries Ltd
Priority to GB2007250A priority Critical patent/GB691539A/en
Publication of GB691539A publication Critical patent/GB691539A/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
    • C09K11/74—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing arsenic, antimony or bismuth
    • C09K11/7464—Phosphates
    • C09K11/7471—Phosphates with alkaline earth metals
    • C09K11/7478—Phosphates with alkaline earth metals with halogens

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Paper (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

691,539. Luminescent materials. THORN ELECTRICAL INDUSTRIES, Ltd. July 23, 1951 [Aug. 12, 1950], No. 20072/50. Class 39(i). The rare earth element samarium is incorporated as an activator in a halo-phosphate luminescent material in a proportion at least 0.01 per cent and not more than 5 per cent. Calcium monohydrogen phosphate, calcium carbonate, calcium fluoride, antimony oxide, manganese chloride tetrahydrate and samarium oxide are heated at 1050‹C, cooled and reheated at 1150‹C. In another material aluminium oxide and calcium carbonate are also included. Specification 645,723 is referred to.
GB2007250A 1950-08-12 1950-08-12 Improvements in luminescent materials Expired GB691539A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2007250A GB691539A (en) 1950-08-12 1950-08-12 Improvements in luminescent materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2007250A GB691539A (en) 1950-08-12 1950-08-12 Improvements in luminescent materials

Publications (1)

Publication Number Publication Date
GB691539A true GB691539A (en) 1953-05-13

Family

ID=10139898

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2007250A Expired GB691539A (en) 1950-08-12 1950-08-12 Improvements in luminescent materials

Country Status (1)

Country Link
GB (1) GB691539A (en)

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