GB549755A - Improvements in and relating to fluorescent materials - Google Patents

Improvements in and relating to fluorescent materials

Info

Publication number
GB549755A
GB549755A GB1492141A GB1492141A GB549755A GB 549755 A GB549755 A GB 549755A GB 1492141 A GB1492141 A GB 1492141A GB 1492141 A GB1492141 A GB 1492141A GB 549755 A GB549755 A GB 549755A
Authority
GB
United Kingdom
Prior art keywords
potassium
vanadium
magnesium
added
aluminium
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
GB1492141A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Priority to GB1492141A priority Critical patent/GB549755A/en
Publication of GB549755A publication Critical patent/GB549755A/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
    • C09K11/67—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals
    • C09K11/69—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals containing vanadium
    • C09K11/691—Chalcogenides
    • 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
    • C09K11/67—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals
    • C09K11/69—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals containing vanadium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

549,755. Luminescent materials. BRITISH THOMSON-HOUSTON CO., Ltd., (General Electric Co.). Nov. 20, 1941] No: 14921. [Class 39 (i)] A yellow-fluorescent material comprises magnesium or aluminium oxide activated by vanadium. Potassium may be added to alter the colour to white. The magnesium or aluminium oxide may be obtained from compounds, such as nitrate or hydroxide, which reduce to these oxides below 1000‹ C. Percentages used are 0.1 to 10, preferably 0.5 to 5, of vanadium and 1 to 10, preferably 5, of potassium: Vanadium is added as chloride or oxide, potassium as carbonate. Fluorides of aluminium, magnesium or calcium are used as fluxes. Firing is carried out at 1000-1100‹ C. for one hour. The material may be applied to the interior of a discharge lamp with a binder such as potassium silicate or cellulose acetate.
GB1492141A 1941-11-20 1941-11-20 Improvements in and relating to fluorescent materials Expired GB549755A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1492141A GB549755A (en) 1941-11-20 1941-11-20 Improvements in and relating to fluorescent materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1492141A GB549755A (en) 1941-11-20 1941-11-20 Improvements in and relating to fluorescent materials

Publications (1)

Publication Number Publication Date
GB549755A true GB549755A (en) 1942-12-04

Family

ID=10049917

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1492141A Expired GB549755A (en) 1941-11-20 1941-11-20 Improvements in and relating to fluorescent materials

Country Status (1)

Country Link
GB (1) GB549755A (en)

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