GB650040A - Fluorescent material - Google Patents

Fluorescent material

Info

Publication number
GB650040A
GB650040A GB21274/47A GB2127447A GB650040A GB 650040 A GB650040 A GB 650040A GB 21274/47 A GB21274/47 A GB 21274/47A GB 2127447 A GB2127447 A GB 2127447A GB 650040 A GB650040 A GB 650040A
Authority
GB
United Kingdom
Prior art keywords
lead
zinc
manganese
silicate
beryllium
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
GB21274/47A
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
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 Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Publication of GB650040A publication Critical patent/GB650040A/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
    • C09K11/66—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing germanium, tin or lead
    • C09K11/666—Aluminates; Silicates

Landscapes

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

Abstract

650,040. Luminescent materials. SYLVANIA ELECTRIC PRODUCTS, Inc. Aug. 5, 1947, No. 21274. Convention date, Nov. 16, 1945. [Class 39 (i)] A zinc silicate luminescent material such as zinc beryllium silicate or zinc orthosilicate, is activated conjointly with manganese, and lead, the lead oxide content being between 0.03 per cent and 0.20 per cent of the equivalent zinc oxide content by weight. Zinc beryllium silicate, manganese and lead-activated, is prepared by precipitating lead nitrate on zinc oxide in an aqueous suspension by the use of ammonium carbonate. The resulting combination of zinc oxide and lead carbonate after filtering and drying, is mixed with beryllium oxide, silica and manganese carbonate, and fired. Specification 581,951 is referred to. The Specification as open to inspection under Sect. 91 comprises also the activation of calcium silicate conjointly with manganese and lead. This subject-matter does not appear in the Specification as accepted.
GB21274/47A 1945-11-16 1947-08-05 Fluorescent material Expired GB650040A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US650040XA 1945-11-16 1945-11-16

Publications (1)

Publication Number Publication Date
GB650040A true GB650040A (en) 1951-02-14

Family

ID=22059697

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21274/47A Expired GB650040A (en) 1945-11-16 1947-08-05 Fluorescent material

Country Status (1)

Country Link
GB (1) GB650040A (en)

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