GB1254271A - Phosphors - Google Patents

Phosphors

Info

Publication number
GB1254271A
GB1254271A GB3924567A GB3924567A GB1254271A GB 1254271 A GB1254271 A GB 1254271A GB 3924567 A GB3924567 A GB 3924567A GB 3924567 A GB3924567 A GB 3924567A GB 1254271 A GB1254271 A GB 1254271A
Authority
GB
United Kingdom
Prior art keywords
activated
phosphors
stirred
reaction solution
solutions
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
GB3924567A
Inventor
George William Luckey
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak 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 Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to GB3924567A priority Critical patent/GB1254271A/en
Publication of GB1254271A publication Critical patent/GB1254271A/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
    • 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
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7704—Halogenides
    • C09K11/7705—Halogenides with alkali or alkaline earth metals
    • 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
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7713—Sulfates

Landscapes

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

Abstract

1,254,271. Luminescent materials. EASTMAN KODAK CO. 25 Nov, 1968 [25 Aug., 1967], No. 39245/67. Addition to 1,161,871. Heading C4S. The method of preparing phosphors by precipitation in a stirred reaction solution to which anion and cation solutions are added as claimed in the parent Specification is applied to; PbSO 4 , when an excess of not more than 0-1M is maintained in the stirred solution; phosphors activated by lanthanide ions andcontaining Na or NH 4 ions or which are subsequently heated to up to 300‹ C. to remove chemiluminescence; alkaline earth fluoro-halides and phosphates; metal carbonates; BaSO 4 activated by Ce, Gd and Tb; SrSO 4 : Eu and SrCO 3 : Cu. The preparation of Ba, Ca, Sr and Pb sulphates activated by Eu or Sm; BaFCl; BaF 2 : Eu<SP>++</SP>; BaCO 3 activated, by Pb or Eu; BaPO 4 : Eu is described. The reaction solutions may include formamide, alcohols and acetic acid. The reaction solution may be stirred by introducing anion and cation solutions as jets or they can be added to. the reaction solution flowing in a conduit. The phosphors are excited by cathode rays, u.v. radiation and. X-rays. Their u.v. emission may be used to initiate photochemical reactions.
GB3924567A 1967-08-25 1967-08-25 Phosphors Expired GB1254271A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3924567A GB1254271A (en) 1967-08-25 1967-08-25 Phosphors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3924567A GB1254271A (en) 1967-08-25 1967-08-25 Phosphors

Publications (1)

Publication Number Publication Date
GB1254271A true GB1254271A (en) 1971-11-17

Family

ID=10408491

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3924567A Expired GB1254271A (en) 1967-08-25 1967-08-25 Phosphors

Country Status (1)

Country Link
GB (1) GB1254271A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942582A (en) * 1972-05-24 1974-04-22
EP2604670A2 (en) * 2004-12-17 2013-06-19 Dosimetry & Imaging Pty Ltd Radiation storage phosphor & applications

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942582A (en) * 1972-05-24 1974-04-22
JPS5128591B2 (en) * 1972-05-24 1976-08-20
EP2604670A2 (en) * 2004-12-17 2013-06-19 Dosimetry & Imaging Pty Ltd Radiation storage phosphor & applications
EP2604670A3 (en) * 2004-12-17 2013-08-07 Dosimetry & Imaging Pty Ltd Radiation storage phosphor & applications
US8890102B2 (en) 2004-12-17 2014-11-18 Dosimetry & Imaging Pty Limited Radiation storage phosphor and applications

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