GB521099A - Improvements in and relating to luminescent powders, and methods of manufacturing the same - Google Patents

Improvements in and relating to luminescent powders, and methods of manufacturing the same

Info

Publication number
GB521099A
GB521099A GB3223938A GB3223938A GB521099A GB 521099 A GB521099 A GB 521099A GB 3223938 A GB3223938 A GB 3223938A GB 3223938 A GB3223938 A GB 3223938A GB 521099 A GB521099 A GB 521099A
Authority
GB
United Kingdom
Prior art keywords
precipitation
luminescent
powders
gelatinous
cadmium
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
GB3223938A
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
Priority to GB3223938A priority Critical patent/GB521099A/en
Publication of GB521099A publication Critical patent/GB521099A/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
    • C09K11/0805—Chalcogenides
    • C09K11/0811—Chalcogenides with zinc or cadmium

Landscapes

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

Abstract

521,099. Luminescent materials. BRITISH THOMSON-HOUSTON CO., Ltd., ANDERSON, J. T., and WELLS, R. S. Nov. 7, 1938, No. 32239. [Class 39 (i)] To render free flowing luminescent powders such as the sulphides of zinc and/or cadmium and/or manganese a gelatinous, semi-gelatinous, amorphous or finely crystalline powder is precipitated on the luminescent material ; the powder comprises oxides or hydroxides of chromium, beryllium, tin, magnesium, cadmium, cobalt, silicon, manganese, nickel, iron and/or silver or the phosphates where precipitable of the elements of groups II and III of the periodic table. The precipitation may be effected by ammonium hydroxide with a salt of the elements separately enumerated ; or by a soluble phosphate with a basic radicle giving an insoluble phosphate. The precipitation may be obtained by heat, addition of an electrolyte &c. In the case of silicon a colloidal solution of silica in alcohol is used the precipitation being effected by water. Dyes or pigments or chromium or iron hydroxides &c. may be added to colour the powders. Specification 511,038 is referred to.
GB3223938A 1938-11-07 1938-11-07 Improvements in and relating to luminescent powders, and methods of manufacturing the same Expired GB521099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3223938A GB521099A (en) 1938-11-07 1938-11-07 Improvements in and relating to luminescent powders, and methods of manufacturing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3223938A GB521099A (en) 1938-11-07 1938-11-07 Improvements in and relating to luminescent powders, and methods of manufacturing the same

Publications (1)

Publication Number Publication Date
GB521099A true GB521099A (en) 1940-05-13

Family

ID=10335490

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3223938A Expired GB521099A (en) 1938-11-07 1938-11-07 Improvements in and relating to luminescent powders, and methods of manufacturing the same

Country Status (1)

Country Link
GB (1) GB521099A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688564A (en) * 1950-11-22 1954-09-07 Rca Corp Method of forming cadmium sulfide photoconductive cells
US2704726A (en) * 1951-03-30 1955-03-22 Rca Corp Method for producing a fluorescent screen and product
DE1028261B (en) * 1954-01-06 1958-04-17 Auergesellschaft Ag Process for improving the flowability of phosphors
DE1028262B (en) * 1954-02-09 1958-04-17 Auergesellschaft Ag Process for improving the flowability of phosphors
DE1059596B (en) * 1952-04-24 1959-06-18 Lithopone Kontor G M B H Process for the production of pigments
US3097103A (en) * 1959-08-12 1963-07-09 Sylvania Electric Prod Method of coating a fluorescent lamp tube
US3147226A (en) * 1960-05-05 1964-09-01 Merck Ag E Anti-fritting luminescent materials for intensifying screens
US3251714A (en) * 1961-07-13 1966-05-17 Philips Corp Method of preparing a cadmium oxide photoconductor
DE2850081A1 (en) * 1978-11-18 1980-05-29 Licentia Gmbh Red phosphor esp. for colour TV screen - has phosphor particles with red iron oxide pigment coating obtd. by thermal decomposition of organic iron cpd.

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688564A (en) * 1950-11-22 1954-09-07 Rca Corp Method of forming cadmium sulfide photoconductive cells
US2704726A (en) * 1951-03-30 1955-03-22 Rca Corp Method for producing a fluorescent screen and product
DE1059596B (en) * 1952-04-24 1959-06-18 Lithopone Kontor G M B H Process for the production of pigments
DE1028261B (en) * 1954-01-06 1958-04-17 Auergesellschaft Ag Process for improving the flowability of phosphors
DE1028262B (en) * 1954-02-09 1958-04-17 Auergesellschaft Ag Process for improving the flowability of phosphors
US3097103A (en) * 1959-08-12 1963-07-09 Sylvania Electric Prod Method of coating a fluorescent lamp tube
US3147226A (en) * 1960-05-05 1964-09-01 Merck Ag E Anti-fritting luminescent materials for intensifying screens
US3251714A (en) * 1961-07-13 1966-05-17 Philips Corp Method of preparing a cadmium oxide photoconductor
DE2850081A1 (en) * 1978-11-18 1980-05-29 Licentia Gmbh Red phosphor esp. for colour TV screen - has phosphor particles with red iron oxide pigment coating obtd. by thermal decomposition of organic iron cpd.

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