GB544444A - Improvements in the preparation of fluorescent materials - Google Patents

Improvements in the preparation of fluorescent materials

Info

Publication number
GB544444A
GB544444A GB15041/40A GB1504140A GB544444A GB 544444 A GB544444 A GB 544444A GB 15041/40 A GB15041/40 A GB 15041/40A GB 1504140 A GB1504140 A GB 1504140A GB 544444 A GB544444 A GB 544444A
Authority
GB
United Kingdom
Prior art keywords
mixture
oct
group
preparation
fluorescent materials
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
GB15041/40A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB544444A publication Critical patent/GB544444A/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
    • C09K11/64—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing aluminium
    • C09K11/646—Silicates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)

Abstract

544,444. Fluorescent zinc silicate. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 9, 1940. No. 15041. Convention date, Oct. 28, 1939. [Class 1 (iii)] [Also in Group XL] An amorphous zinc silicate exhibiting yellow fluorescence is obtained by heating to a temperature not exceeding 850‹C. a mixture of zinc oxide and silica comprising an excess of either reactant or an inert substance such as alumina or magnesia, the mixture also containing 0.5-40 per cent. of a neutral metallic halide, e.g. potassium chloride. A manganese activator is included in the mixture. Specification 521,796, [Group XL], is referred to.
GB15041/40A 1939-10-28 1940-10-09 Improvements in the preparation of fluorescent materials Expired GB544444A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US544444XA 1939-10-28 1939-10-28

Publications (1)

Publication Number Publication Date
GB544444A true GB544444A (en) 1942-04-14

Family

ID=21991103

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15041/40A Expired GB544444A (en) 1939-10-28 1940-10-09 Improvements in the preparation of fluorescent materials

Country Status (1)

Country Link
GB (1) GB544444A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2542322A (en) * 1949-08-15 1951-02-20 Gen Electric Method of preparing calcium silicate phosphor
US2597631A (en) * 1950-03-22 1952-05-20 Gen Electric Method of preparing barium silicate phosphor
US2748303A (en) * 1949-11-10 1956-05-29 Westinghouse Electric Corp Color-corrected light source and phosphors therefor
US2957829A (en) * 1958-06-17 1960-10-25 Gen Electric Preparation of luminescent material
US4336313A (en) * 1981-04-03 1982-06-22 Gte Laboratories Incorporated Luminescent material, method of making, and screens employing same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2542322A (en) * 1949-08-15 1951-02-20 Gen Electric Method of preparing calcium silicate phosphor
US2748303A (en) * 1949-11-10 1956-05-29 Westinghouse Electric Corp Color-corrected light source and phosphors therefor
US2597631A (en) * 1950-03-22 1952-05-20 Gen Electric Method of preparing barium silicate phosphor
US2957829A (en) * 1958-06-17 1960-10-25 Gen Electric Preparation of luminescent material
US4336313A (en) * 1981-04-03 1982-06-22 Gte Laboratories Incorporated Luminescent material, method of making, and screens employing same

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