GB653576A - Luminescent material - Google Patents

Luminescent material

Info

Publication number
GB653576A
GB653576A GB16368/48A GB1636848A GB653576A GB 653576 A GB653576 A GB 653576A GB 16368/48 A GB16368/48 A GB 16368/48A GB 1636848 A GB1636848 A GB 1636848A GB 653576 A GB653576 A GB 653576A
Authority
GB
United Kingdom
Prior art keywords
mols
lead
blue
barium
mol
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
GB16368/48A
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 GB653576A publication Critical patent/GB653576A/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)

Abstract

653,576. Luminescent materials. SYLVANIA ELECTRIC PRODUCTS, Inc. June 17, 1948, No. 16368. Convention date, June 17, 1947. Drawings to Specification. [Class 39 (i)] A luminescent material comprises a bariummagnesium-lead-silicate phosphor in which the ratio of the number of mols. of barium to the total number of mols. of barium plus magnesium is between 1.0 and 0.2, the lead content is between 0.01 and 1.3 mols. and the silicic acid content is between 0.05 and 1.8 mols. per mol. of barium plus magnesium plus an additional mol. of silicic acid for each mol. of lead used. The Specification gives certain preferred compositions within the above range together with manufacturing details and light output diagrams, Figs. 1 to 10 (not shown), produced from tests on numerous samples with calcium lead tungstate as the comparison standard. The fluorescent colour is blue or blue-green. Phosphors according to the invention may be used as the blue-green component when blended with zinc orthosilicate and zinc beryllium silicate in the preparation of daylight fluorescent lamps.
GB16368/48A 1947-06-17 1948-06-17 Luminescent material Expired GB653576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US653576XA 1947-06-17 1947-06-17

Publications (1)

Publication Number Publication Date
GB653576A true GB653576A (en) 1951-05-16

Family

ID=22062151

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16368/48A Expired GB653576A (en) 1947-06-17 1948-06-17 Luminescent material

Country Status (1)

Country Link
GB (1) GB653576A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1007908B (en) * 1953-05-18 1957-05-09 Ets Claude Paz & Silva Process for producing a phosphor
DE1076290B (en) * 1955-05-10 1960-02-25 Philips Nv Process for producing an ultraviolet luminous silicate
DE1145287B (en) * 1954-12-23 1963-03-14 Philips Nv Process for the production of ultraviolet-luminescent alkaline earth silicates
DE1176301B (en) * 1956-04-19 1964-08-20 Leuchtstoffwerk G M B H Process for the production of a calcium silicate phosphor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1007908B (en) * 1953-05-18 1957-05-09 Ets Claude Paz & Silva Process for producing a phosphor
DE1145287B (en) * 1954-12-23 1963-03-14 Philips Nv Process for the production of ultraviolet-luminescent alkaline earth silicates
DE1076290B (en) * 1955-05-10 1960-02-25 Philips Nv Process for producing an ultraviolet luminous silicate
DE1176301B (en) * 1956-04-19 1964-08-20 Leuchtstoffwerk G M B H Process for the production of a calcium silicate phosphor

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