GB746273A - Improvements in luminescent materials - Google Patents

Improvements in luminescent materials

Info

Publication number
GB746273A
GB746273A GB2089151A GB2089151A GB746273A GB 746273 A GB746273 A GB 746273A GB 2089151 A GB2089151 A GB 2089151A GB 2089151 A GB2089151 A GB 2089151A GB 746273 A GB746273 A GB 746273A
Authority
GB
United Kingdom
Prior art keywords
calcium
luminescent material
luminescent materials
strontium
pyrophosphate
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
GB2089151A
Inventor
Peter Whitten Ranby
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 GB2089151A priority Critical patent/GB746273A/en
Publication of GB746273A publication Critical patent/GB746273A/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)
  • Luminescent Compositions (AREA)
  • Paper (AREA)

Abstract

746,273. Luminescent material. THORN ELECTRICAL INDUSTRIES, Ltd. Aug. 29, 1952 [Sept. 4, 1951], No. 20891/51. Class 39 (1). A luminescent material comprises the pyrophosphate of calcium or strontium or both activated by cerium in the ceric state with manganese as an additional activator, the ratio of calcium and strontium oxide to phosphorus pentoxide being 2 to 1.4-0.9. A lithium compound (up to 10 per cent) may be added in the preparation of the matrix. Specifications 512,154, 609,711, 746,271 and 746,272 are referred to.
GB2089151A 1951-09-04 1951-09-04 Improvements in luminescent materials Expired GB746273A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2089151A GB746273A (en) 1951-09-04 1951-09-04 Improvements in luminescent materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2089151A GB746273A (en) 1951-09-04 1951-09-04 Improvements in luminescent materials

Publications (1)

Publication Number Publication Date
GB746273A true GB746273A (en) 1956-03-14

Family

ID=10153513

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2089151A Expired GB746273A (en) 1951-09-04 1951-09-04 Improvements in luminescent materials

Country Status (1)

Country Link
GB (1) GB746273A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013081749A1 (en) * 2011-11-29 2013-06-06 General Electric Company Phosphor blends for fluorescent lamps

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013081749A1 (en) * 2011-11-29 2013-06-06 General Electric Company Phosphor blends for fluorescent lamps
US8531098B2 (en) 2011-11-29 2013-09-10 General Electric Company Phosphor blends for fluorescent lamps

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