GB525134A - Improvements in luminescent materials - Google Patents

Improvements in luminescent materials

Info

Publication number
GB525134A
GB525134A GB485739A GB485739A GB525134A GB 525134 A GB525134 A GB 525134A GB 485739 A GB485739 A GB 485739A GB 485739 A GB485739 A GB 485739A GB 525134 A GB525134 A GB 525134A
Authority
GB
United Kingdom
Prior art keywords
willemite
mixture
mixed
per cent
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
GB485739A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB485739A priority Critical patent/GB525134A/en
Publication of GB525134A publication Critical patent/GB525134A/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
    • C09K11/0838—Aluminates; Silicates

Landscapes

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

Abstract

525,134. Luminescent materials. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand-Ges. fur Elektrische Gluhlampen). Feb. 14, 1939, No. 4857. [Class 39 (i)] Luminescent material is made from willemite -or materials from which willemite is produced by heat-mixed with not more than 20 per cent. of a white sesquioxide, the mixture being heated. In one method pure zinc oxide, pure silica gel, manganese chloride in quantity so that it constitutes 1 per cent. of the mixture and yttria are mixed, made into a smooth paste with water, dried and ground, is reground, reheated and washed with distilled water. The use of lanthana, alumina, boric oxide scandia, ytterbia are mentioned. The compound is used in a discharge lamp wherein the radiation has a substantial component of wave length about 2537 A.U.
GB485739A 1939-02-14 1939-02-14 Improvements in luminescent materials Expired GB525134A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB485739A GB525134A (en) 1939-02-14 1939-02-14 Improvements in luminescent materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB485739A GB525134A (en) 1939-02-14 1939-02-14 Improvements in luminescent materials

Publications (1)

Publication Number Publication Date
GB525134A true GB525134A (en) 1940-08-22

Family

ID=9785110

Family Applications (1)

Application Number Title Priority Date Filing Date
GB485739A Expired GB525134A (en) 1939-02-14 1939-02-14 Improvements in luminescent materials

Country Status (1)

Country Link
GB (1) GB525134A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957829A (en) * 1958-06-17 1960-10-25 Gen Electric Preparation of luminescent material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957829A (en) * 1958-06-17 1960-10-25 Gen Electric Preparation of luminescent material

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