GB542291A - Improvements in or relating to the manufacture of luminescent materials - Google Patents

Improvements in or relating to the manufacture of luminescent materials

Info

Publication number
GB542291A
GB542291A GB7831/40A GB783140A GB542291A GB 542291 A GB542291 A GB 542291A GB 7831/40 A GB7831/40 A GB 7831/40A GB 783140 A GB783140 A GB 783140A GB 542291 A GB542291 A GB 542291A
Authority
GB
United Kingdom
Prior art keywords
zinc
sulphide
calcined
precipitated
relating
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
GB7831/40A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB542291A publication Critical patent/GB542291A/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
    • C09K11/58—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing copper, silver or gold
    • C09K11/582—Chalcogenides
    • C09K11/584—Chalcogenides with zinc or cadmium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

542,291. Zinc sulphide. DU PONT DE NEMOURS & CO., E. I. May 1, 1940, No. 7831. Convention date, May 13, 1939. [Class 1 (iii)] [Also in Group XL] Zinc sulphide is precipitated from an acid solution and calcined with a small amount of a copper compound to form a luminescent paint. The copper is between one part in 5,000 and one in 50,000 of the zinc, preferably between one in 10,000 and one in 20,000. Examples are given in which the sulphide is precipitated with hydrogen sulphide from solutions containing from 0.1 to 1 gramme-molecule per litre of zinc. A small quantity of ammonium chloride or zinc chloride may be added to the precipitate, which is calcined at from 800 to 1,200‹C. The zinc sulphide may be mixed with titanium oxide, barium or calcium sulphate, asbestos or silica in the making of paints. Specification 473,715 is referred to.
GB7831/40A 1939-05-13 1940-05-01 Improvements in or relating to the manufacture of luminescent materials Expired GB542291A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US542291XA 1939-05-13 1939-05-13

Publications (1)

Publication Number Publication Date
GB542291A true GB542291A (en) 1942-01-05

Family

ID=21989616

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7831/40A Expired GB542291A (en) 1939-05-13 1940-05-01 Improvements in or relating to the manufacture of luminescent materials

Country Status (1)

Country Link
GB (1) GB542291A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097598B (en) * 1956-12-24 1961-01-19 Westinghouse Electric Corp Process for the production of an electroluminescent zinc sulfide phosphor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097598B (en) * 1956-12-24 1961-01-19 Westinghouse Electric Corp Process for the production of an electroluminescent zinc sulfide phosphor

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