[go: up one dir, main page]

DE103441C - - Google Patents

Info

Publication number
DE103441C
DE103441C DENDAT103441D DE103441DA DE103441C DE 103441 C DE103441 C DE 103441C DE NDAT103441 D DENDAT103441 D DE NDAT103441D DE 103441D A DE103441D A DE 103441DA DE 103441 C DE103441 C DE 103441C
Authority
DE
Germany
Prior art keywords
neodymium
glass
oxide
iron oxide
color
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.)
Active
Application number
DENDAT103441D
Other languages
German (de)
Publication of DE103441C publication Critical patent/DE103441C/de
Active legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C1/00Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Um gewöhnliches Glas, welches infolge eines geringen Eisengehaltes eine grünliche (Eisenoxydul) oder gelbliche (Eisenoxyd) Färbung besitzt, zu entfärben, wurden bislang vorzugsweise die Oxyde von Mangan, Arsen und Antimon verwendet; Selenverbindungen eignen sich für bessere Glassorten als Entfärbungsmittel , vertheuern aber wegen ihres hohen Preises die Erzeugnisse erheblich. Durch Versuche wurde festgestellt, dafs auch Neodymoxyd und Erbiumoxyd, welche nur wenig Cer oder Praseodym enthalten und in technisch reiner Beschaffenheit einen wohlfeilen Handelsartikel bilden, zur Entfärbung von Glas vortheilhaft verwendet werden können.Ordinary glass, which due to its low iron content, has a greenish (iron oxide) or yellowish (iron oxide) color, to decolorize, have so far been preferred the oxides of manganese, arsenic, and antimony used; Selenium compounds are suitable are in favor of better types of glass as decolorizing agents, but are more expensive because of their high level Price the products considerably. Experiments have shown that neodymium oxide is also and erbium oxide, which contain only a little cerium or praseodymium and, in technically pure quality, an inexpensive article of commerce form, can be used advantageously for discoloration of glass.

Die Oxyde oder deren Salze, die beim Glühen Oxyde (Superoxyde) hinterlassen, werden entweder dem Glassatze oder der fertigen Schmelze zugesetzt.The oxides or their salts that leave behind oxides (super oxides) when glowing become added either to the glass set or to the finished melt.

Der Vorgang der Entfärbung ist folgender:The process of decolorization is as follows:

Neodym- und Erbiumoxyd färben das Glas rosenroth (Didym färbt es blau). Rosenroth ist die Complementärfarbe zu dem Blaugrün der Eisenoxydulgläser. Enthält das Neodym oder Erbium, wie es technisch gewonnen wird, noch kleine Mengen Cer und Praseodym, so wird die Farbe des weifsen Glases blafs purpurroth. Dieses ist aber die Complementärfarbe zum Hellgelb des eisenoxydhaltigen Glases. Hierbei ist zu bemerken, dafs auch letzteres infolge des reducirendenEinflusses der Flammengase stets Oxydul enthält. Andererseits bildet das durch Glühen irgend einer Neodymverbindung gebildete Neodymsuperoxyd ein energisches Oxydationsmittel, durch welches ein Theil von vorhandenem Eisenoxydul zu Oxyd oxydirt wird, wodurch stets die gewünschte hellgrüne Farbe entsteht.Neodymium and erbium oxide color the glass rose-red (Didymium colors it blue). Rosenroth is the complementary color to the blue-green of the iron oxide glass. Contains the neodymium or erbium, as it is technically obtained, also small amounts of cerium and praseodymium, like that the color of the white glass becomes pale purple. But this is the complementary color to the light yellow of the glass containing iron oxide. It should be noted here that the latter is also true always contains oxide due to the reducing influence of the flame gases. On the other hand, educates the neodymium peroxide formed by the glow of any neodymium compound is an energetic oxidizing agent by which a part of the existing iron oxide is oxidized to oxide, whereby the desired is always the desired light green color arises.

Ist ein Glas demnach im Wesentlichen eisenoxydhaltig, so benutzt man ein Neodymsalz (z. B. das Carbonat oder Sulfat) als Entfärbungsmittel, ist es eisenoxydulhaltig, so wird das durch Glühen erhaltene, an Neodymsuperoxyd reiche Oxyd oder Erbiumoxyd verwendet. Auf diese Weise umgeht man den Einflufs der den käuflichen Neodym- und Erbinpräparaten anhaftenden kleinen Mengen von Cer und Praseodym. If a glass essentially contains iron oxide, a neodymium salt is used (e.g. the carbonate or sulphate) as a decolorizing agent, if it contains iron oxide, it will Oxide or erbium oxide rich in neodymium superoxide obtained by annealing is used. on in this way one circumvents the influence of the neodymium and hereditary preparations that are available for sale small amounts of cerium and praseodymium.

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Entfärbung von Glas, dadurch gekennzeichnet, dafs eventuell wenig Cer und Praseodym enthaltende Neodym- oder Erbiumverbindungen dem Glassatze vor oder während des Schmelzens zugesetzt werden.Process for decolorizing glass, characterized in that possibly little cerium and neodymium or erbium compounds containing praseodymium in front of or can be added during melting.
DENDAT103441D Active DE103441C (en)

Publications (1)

Publication Number Publication Date
DE103441C true DE103441C (en)

Family

ID=373929

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT103441D Active DE103441C (en)

Country Status (1)

Country Link
DE (1) DE103441C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009055067A1 (en) 2009-12-21 2011-06-22 Robert Bosch GmbH, 70469 Method for controlling internal combustion engine, involves operating internal combustion engine temporarily in operating mode, where particles emitted by internal combustion engine are stored in particle filter in operating mode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009055067A1 (en) 2009-12-21 2011-06-22 Robert Bosch GmbH, 70469 Method for controlling internal combustion engine, involves operating internal combustion engine temporarily in operating mode, where particles emitted by internal combustion engine are stored in particle filter in operating mode

Similar Documents

Publication Publication Date Title
DE103441C (en)
US2281076A (en) Method of making reflecting glass
US1995952A (en) Method of fining glass and batch therefor
DE636776C (en) Process for the pretreatment of starting materials containing vanadium
DE401172C (en) Process for the production of iron chromium alloys
US2473958A (en) Black glass and method of making
DE162607C (en)
SU1539172A1 (en) Method of producing lead-containing glass
AT316957B (en) White enamel for sheet steel with a low titanium dioxide content
DE421153C (en) Process for the production of ferro-tungsten or ferro-molybdenum
DE709334C (en) Glass that can be stained red by copper or copper compounds
DE445660C (en) Process for the production of colored glasses containing boric acid
US1629648A (en) Glass composition
DE283204C (en)
DE657538C (en) Process for producing white opaque emails
DE490490C (en) Process for the production of usable titanium iron alloys in the liquid state
AT160613B (en) Process for the production of enamels.
Newton Metallic gold and ruby glass
DE707609C (en) Method of making amber colored glass
DE511945C (en) Process for the production of morganita-like pink spinels
DE102004034783A1 (en) Infrared-absorbing blue-flame mixture
DE476849C (en) Process for the production of a colored Portland cement
DE723060C (en) Manufacture of blue pigments
DE645048C (en) Process for removing the color from transparent or shimmering glasses or from glass-like materials
DE707051C (en) Procedure for the transmission of emails