GB1161871A - Preparation of Phosphors. - Google Patents

Preparation of Phosphors.

Info

Publication number
GB1161871A
GB1161871A GB1876765A GB1876765A GB1161871A GB 1161871 A GB1161871 A GB 1161871A GB 1876765 A GB1876765 A GB 1876765A GB 1876765 A GB1876765 A GB 1876765A GB 1161871 A GB1161871 A GB 1161871A
Authority
GB
United Kingdom
Prior art keywords
solution
reaction
sulphates
added
cation
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
GB1876765A
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 GB1876765A priority Critical patent/GB1161871A/en
Publication of GB1161871A publication Critical patent/GB1161871A/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
    • C09K11/085—Vanadates
    • 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
    • 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
    • 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
    • C09K11/0888—Sulfates
    • 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

1,161,871. Luminescent materials. EASTMAN KODAK CO. 4 Aug., 1966 [4 May, 1965], No. 18767/65. Heading C4S. A method of precipitating an inorganic phosphor which is a salt, whose cation is an element included in Series 4 to 11 of Mendeleeff's Periodic Table comprises simultaneously running solutions containing the cation and anion of the salt respectively into a vessel containing a reaction solution and stirring rapidly, the excess of anion or cation being not more than 0À5 molar at least during the earlier part of the reaction, local excesses appreciably above the average being prevented by the stirring. Phosphors referred to include Ba, Ca and Sr sulphides, sulphates, carbonates, silicates, tungstates, molybdates, fluorides and germanates activated by Sn, Eu, Pr, Nd, Pb, U, Cu, Mn, Cr, Ti, V and Be; Na, K, Li and NH 4 activators may be included. Activated Ba and Ba-Ca sulphates are precipitated by adding a solution of BaCl 2 , PbCl 2 and HCl and a solution of Na 2 SO 4 and HCl to a reaction solution of Na 2 SO 4 and HC1. Sulphate ions may be added in the form of sulphates of metals in Groups I, II and III, e.g. Na, K, Ca, Cu, Zn, Al and In. The Ba and Pb ions may be added as soluble halides and acetates. Bi, Mn, Eu, Sn and Pr chlorides may be added to the BaCl 2 solution. The reaction may be carried out in a spherical vessel containing several baffles and having jets for the introduction of the reactants. During the reaction a 0À1 molar excess of anions or cations may be maintained in an aqueous solution having a pH less than 1 at 70<SP>‹</SP> to 100‹ C. HC1, HBr, HI, haloacetic benzene sulphonic, perchloric, phosphoric, phosphorous and hypophosphorous acids are used to control the pH value. The phosphors with a binder are used in X-ray intensifying screens.
GB1876765A 1965-05-04 1965-05-04 Preparation of Phosphors. Expired GB1161871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1876765A GB1161871A (en) 1965-05-04 1965-05-04 Preparation of Phosphors.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1876765A GB1161871A (en) 1965-05-04 1965-05-04 Preparation of Phosphors.

Publications (1)

Publication Number Publication Date
GB1161871A true GB1161871A (en) 1969-08-20

Family

ID=10118061

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1876765A Expired GB1161871A (en) 1965-05-04 1965-05-04 Preparation of Phosphors.

Country Status (1)

Country Link
GB (1) GB1161871A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3669897A (en) * 1969-11-14 1972-06-13 Westinghouse Electric Corp Divalent europium activated alkaline earth metal sulfates and method of preparation
US4792691A (en) * 1986-07-09 1988-12-20 Minnesota Mining And Manufacturing Company Method for recording and reproducing a radiation image, radiation image storage panel, photostimulable phosphors and method for obtaining said stimulable phosphors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3669897A (en) * 1969-11-14 1972-06-13 Westinghouse Electric Corp Divalent europium activated alkaline earth metal sulfates and method of preparation
US4792691A (en) * 1986-07-09 1988-12-20 Minnesota Mining And Manufacturing Company Method for recording and reproducing a radiation image, radiation image storage panel, photostimulable phosphors and method for obtaining said stimulable phosphors

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Legal Events

Date Code Title Description
PS Patent sealed
PE Patent expired