DE747697C - Manufacture of a cadmium silicate manganese luminophore - Google Patents

Manufacture of a cadmium silicate manganese luminophore

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Publication number
DE747697C
DE747697C DEB183685D DEB0183685D DE747697C DE 747697 C DE747697 C DE 747697C DE B183685 D DEB183685 D DE B183685D DE B0183685 D DEB0183685 D DE B0183685D DE 747697 C DE747697 C DE 747697C
Authority
DE
Germany
Prior art keywords
luminophore
added
lithium salt
amount
lithium
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
DEB183685D
Other languages
German (de)
Inventor
Dr Dietrich Dobischek
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 filed Critical
Priority to DEB183685D priority Critical patent/DE747697C/en
Application granted granted Critical
Publication of DE747697C publication Critical patent/DE747697C/en
Expired legal-status Critical Current

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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
    • C09K11/59—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing silicon

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

Description

Herstellung eines Cadmiumsilicatmangan-Luminophors Von den technisch brauchbaren Silicat-LumiAophoren hat nächst dem Zinksilicatmangan-Luminophor der Cadmiumsilicatmangan-Luminophor ständig zunehmende Bedeutung gewonnen; insbesondere ist seine Verwendung für Gasentladungslampen bekannt. Sein Lumineszenzlicht ist gelboränge.Manufacture of a cadmium silicate manganese luminophore From the technical The zinc silicate manganese luminophore is the closest to usable silicate luminaires Cadmium silicate manganese luminophore gained steadily increasing importance; in particular its use for gas discharge lamps is known. Its luminescent light is yellow-length.

Es wurde nun gefunden, daß sich die Leuchteigenschaften des Cadmiumsilicatmangan-Luminophors weitgehend verändern lassen, wenn man bei seiner Herstellung Lithiumsalz zusetzt. Je nach der zugesetzten Menge werden verschiedene Wirkungen erzielt. Wird das Lithiumsalz in Mengen zwischen z und 8 01, Lith-iumoxyd angewendet, so gelangt man zu Präparaten, deren Lumineszenzlicht in dem Maße, wie der Lia O--Gehalt steigt, eine immer rötlichere Tönung aufweist. Bei Zusatz ,von beispielsweise etwa 50/, Li20 äquivalenten Mengen Lithiumsalz erhält man auf diese Art ausgesprochen rotorange leuchtende -Körper, neben denen ohne oder nur mit geringem Lithiumsalz hergestellte, Cadmiumsilicatmangan-Luminophore nur mehr reingelb zu leuchten scheinen. Rotorange leuchtende Luminophore sind z. B. für die Verwendung in Gasentladungslampen besonders erwünscht.It has now been found that the luminous properties of the cadmium silicate manganese luminophore can be largely changed if a lithium salt is added during its production. Various effects are obtained depending on the amount added. When the lithium salt is employed in amounts between z and 8 01, lith iumoxyd, we come into preparations whose luminescent light in the extent that the Lia O - content increases, has a more reddish tint. With the addition of, for example, about 50 /, Li20 equivalent amounts of lithium salt, one obtains in this way distinctly red-orange luminous bodies, in addition to those cadmium silicate-manganese luminophores produced without or with only a small amount of lithium salt only appear to glow in pure yellow. Red-orange luminophores are z. B. particularly desirable for use in gas discharge lamps.

Überraschenderweise wurde ferner festgestellt, daß sich bei noch weiterer Erhöhung des Lithiumzusatzes grün leuchtende Cadmiumsilicatmangan-Luminophore gewinnen lassen. Es ,gelingt ,dies, wenn man etwa 8 bis 1o °/o Lithiumoxyd äquivalente Mengen Lithiumsalz oder noch mehr anwendet.Surprisingly, it was also found that even further Increase in the addition of lithium, gaining green cadmium silicate manganese luminophores permit. It succeeds if one uses about 8 to 10% lithium oxide equivalent amounts Lithium salt or more.

Schließlich wurde gefunden, daß schön rotorange leuchtende Präparate auch bei den hohen, 8 bis roolo Lithiumoxyd und mehr äquivalenten Zusätzen von Lithiumsalz entstehen, wenn man der Ausgangsmischung gleichzeitig noch mindestens doppelt so viel Kieselsäure zufügt, als die dem zugefügten Lithiumsalz. entsprechende Menge L'20 beträgt.Finally it was found that specimens with a beautiful red-orange glow also with the high, 8 to roolo lithium oxide and more equivalent additions of lithium salt arise when looking at the starting mix at the same time at least Adds twice as much silica as that of the added lithium salt. appropriate Amount L'20 is.

Claims (4)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung eines Cadmiumsilicatmangan-Luminophors, dadurch gekennzeichnet, daß der in üblicher Weise zu verarbeitenden Ausgangsmischung eiiie@ mehr als i % Lithiumoxyd entsprechende Menge eines Lithiumsalzes zugefügt wird. PATENT CLAIMS: i. Method of making a cadmium silicate manganese luminophore, characterized in that the starting mixture to be processed in the usual way eiiie @ more than i% lithium oxide corresponding amount of a lithium salt is added will. 2. Verfahren nach Anspruch i zur Herstellung eines mehr oder minder rötlich leuchtenden Luminophors, dadurch gekennzeichnet, daß die zugefügte Menge Lithiumsalz zwischen i und 80[o @Lithiumoxyd entspricht. 2. The method according to claim i for producing a more or less reddish luminous luminophore, characterized in that the added amount of lithium salt between i and 80 [o @Lithiumoxide corresponds. 3. Verfahren nach Anspruch i zur Herstellung eines grün leuchtenden Luminophors, dadurch gekennzeichnet, daß die zugefügte Menge Lithiumsalz mehr als 801, Lithiumoxyd entspricht. 3. The method according to claim i for the production of a green luminous luminophore, characterized in that the added amount of lithium salt corresponds to more than 801 lithium oxide. 4. Verfahren nach Anspruch i und 3 zur Herstellung eines rotorange .leuchtenden Luminophors, dadurch gekennzeichnet, daß der Ausgangsmischung mindestens noch doppelt so viel Kieselsäure zugefügt wird, als die dem zugefügten Lithiumsalz entsprechende Menge Lithiumoxyd beträgt. Zur Abgrenzung des Anmeldungsgegenstandes vom Stand der Technik sind im Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden: deutsche Patentschrift ..... Nr. 187 194; britische Patentschriften 466 503, 482 071, 487 624; französische Patentschriften - 820 Zoo, 82o 886; Rupp, Die Leuchtmassen und ihre Verwendung (1937) S. 62 und 63; \'anino, Die Leuchtfarben (1935), S.77 bis -80; Wien-Harms, Handbuch derExperimentalphysik, Band XXIII (1928), Teil i, S.14, Tabelle i ; Ullmann, Enzyklopädie der techn. Chemie, Band 7 (1919), S. 563.4. The method according to claim i and 3 for the production of a red-orange .leuchtenden luminophore, characterized in that at least twice as much silica is added to the starting mixture as the amount of lithium oxide corresponding to the added lithium salt. To distinguish the subject of the application from the state of the art, the following publications were taken into account in the granting procedure: German patent specification ..... No. 187 194; British patents 466 503, 482 071, 487 624; French patents - 820 Zoo, 82o 886; Rupp, Die Leuchtmassen and their use (1937) pp. 62 and 63; \ 'anino, Die Leuchtfarben (1935), pp.77 to -80; Wien-Harms, Handbuch derExperimentalphysik, Volume XXIII (1928), part i, p.14, table i; Ullmann, encyclopedia of techn. Chemie, Volume 7 (1919), p. 563.
DEB183685D 1938-06-28 1938-06-28 Manufacture of a cadmium silicate manganese luminophore Expired DE747697C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB183685D DE747697C (en) 1938-06-28 1938-06-28 Manufacture of a cadmium silicate manganese luminophore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB183685D DE747697C (en) 1938-06-28 1938-06-28 Manufacture of a cadmium silicate manganese luminophore

Publications (1)

Publication Number Publication Date
DE747697C true DE747697C (en) 1944-10-11

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DEB183685D Expired DE747697C (en) 1938-06-28 1938-06-28 Manufacture of a cadmium silicate manganese luminophore

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972571C (en) * 1951-07-31 1959-08-13 Gen Electric Co Ltd A method for producing an artificial phosphor that can be excited by ultraviolet rays or cathode rays

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE187194C (en) * 1905-08-30
GB466503A (en) * 1935-11-28 1937-05-28 Gen Electric Co Ltd Improvements in or relating to electric lamps comprising luminescent materials
FR820100A (en) * 1936-04-09 1937-11-02 Lampes Sa Electric lamps with luminescent substances, and their manufacturing process
FR820886A (en) * 1936-04-22 1937-11-20 Lampes Sa Improvements to discharge lamps with phosphorescent materials, and process for making these lamps and materials
GB482071A (en) * 1936-04-09 1938-03-23 British Thomson Houston Co Ltd Improvements in and relating to luminescent materials for use in electric lamps and the like
GB487624A (en) * 1936-04-22 1938-06-23 British Thomson Houston Co Ltd Improvements in and relating to fluorescent material and methods of manufacturing the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE187194C (en) * 1905-08-30
GB466503A (en) * 1935-11-28 1937-05-28 Gen Electric Co Ltd Improvements in or relating to electric lamps comprising luminescent materials
FR820100A (en) * 1936-04-09 1937-11-02 Lampes Sa Electric lamps with luminescent substances, and their manufacturing process
GB482071A (en) * 1936-04-09 1938-03-23 British Thomson Houston Co Ltd Improvements in and relating to luminescent materials for use in electric lamps and the like
FR820886A (en) * 1936-04-22 1937-11-20 Lampes Sa Improvements to discharge lamps with phosphorescent materials, and process for making these lamps and materials
GB487624A (en) * 1936-04-22 1938-06-23 British Thomson Houston Co Ltd Improvements in and relating to fluorescent material and methods of manufacturing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972571C (en) * 1951-07-31 1959-08-13 Gen Electric Co Ltd A method for producing an artificial phosphor that can be excited by ultraviolet rays or cathode rays

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