GB642966A - Improvements in or relating to the preparation of phosphors - Google Patents

Improvements in or relating to the preparation of phosphors

Info

Publication number
GB642966A
GB642966A GB31528/47A GB3152847A GB642966A GB 642966 A GB642966 A GB 642966A GB 31528/47 A GB31528/47 A GB 31528/47A GB 3152847 A GB3152847 A GB 3152847A GB 642966 A GB642966 A GB 642966A
Authority
GB
United Kingdom
Prior art keywords
silicate
hour
phosphors
phosphor
mixed
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
GB31528/47A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International 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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB642966A publication Critical patent/GB642966A/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
    • C09K11/59—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing silicon

Landscapes

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

Abstract

642,966. Luminescent materials. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Nov. 28, 1947, No. 31528. Convention date, Aug. 21, 1946. Drawings to Specification. [Class 39 (i)] Manganese activated silicate phosphors are made by preheating the mixed raw materials at from 710‹ to 950‹ C. to form the silicate and thereafter heating finally at a temperature of about 1200‹ C. to cause crystallization and improve fluorescence. In one example, zinc oxide, beryllium oxide, silicic acid and manganous carbonate are mixed and heated at 800 ‹ C. for one hour, being then raised to normal firing temperature of 1200‹ C. for one hour, producing a very white phosphor. Other metal radicles may be included in the zincberyllium silicate phosphor, e.g. magnesium, cadmium, calcium, strontium, barium, zirconium, aluminium and combinations thereof. The treatment also improves zinc silicate.
GB31528/47A 1946-08-21 1947-11-28 Improvements in or relating to the preparation of phosphors Expired GB642966A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US642966XA 1946-08-21 1946-08-21

Publications (1)

Publication Number Publication Date
GB642966A true GB642966A (en) 1950-09-13

Family

ID=22054950

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31528/47A Expired GB642966A (en) 1946-08-21 1947-11-28 Improvements in or relating to the preparation of phosphors

Country Status (1)

Country Link
GB (1) GB642966A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158782A2 (en) * 1984-04-14 1985-10-23 Degussa Aktiengesellschaft Luminescent zinc silicate materials activated with manganese, and process for their manufacture
EP0158778A2 (en) * 1984-04-14 1985-10-23 Degussa Aktiengesellschaft Luminescent zinc silicate materials activated with manganese and process for their manufacture

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158782A2 (en) * 1984-04-14 1985-10-23 Degussa Aktiengesellschaft Luminescent zinc silicate materials activated with manganese, and process for their manufacture
EP0158778A2 (en) * 1984-04-14 1985-10-23 Degussa Aktiengesellschaft Luminescent zinc silicate materials activated with manganese and process for their manufacture
EP0158778A3 (en) * 1984-04-14 1987-07-01 Degussa Aktiengesellschaft Luminescent zinc silicate materials activated with manganese and process for their manufacture
EP0158782A3 (en) * 1984-04-14 1987-07-01 Degussa Aktiengesellschaft Luminescent zinc silicate materials activated with manganese, and process for their manufacture

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