EP2906509A1 - Utilisation de composés oxygénés d'aluminium en tant qu'agents de protection anticorrosion et agents de séparation pour des verres de silicate sodocalcique - Google Patents

Utilisation de composés oxygénés d'aluminium en tant qu'agents de protection anticorrosion et agents de séparation pour des verres de silicate sodocalcique

Info

Publication number
EP2906509A1
EP2906509A1 EP13776472.6A EP13776472A EP2906509A1 EP 2906509 A1 EP2906509 A1 EP 2906509A1 EP 13776472 A EP13776472 A EP 13776472A EP 2906509 A1 EP2906509 A1 EP 2906509A1
Authority
EP
European Patent Office
Prior art keywords
aluminum
glass
oxygen compounds
corrosion
compounds
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.)
Withdrawn
Application number
EP13776472.6A
Other languages
German (de)
English (en)
Inventor
Martin Gross
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.)
Bergakademie Freiberg
Original Assignee
Bergakademie Freiberg
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 Bergakademie Freiberg filed Critical Bergakademie Freiberg
Publication of EP2906509A1 publication Critical patent/EP2906509A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C2218/00—Methods for coating glass
    • C03C2218/30—Aspects of methods for coating glass not covered above
    • C03C2218/355—Temporary coating

Definitions

  • oxygen compounds of aluminum as corrosion inhibitors and release agents for soda lime silicate glasses
  • the invention relates to the use of aluminum compounds or particulate dust containing aluminum compounds, as corrosion inhibitors for glass, in particular for soda-lime silicate soda glasses and release agents.
  • additives are added to these polymer particles (typically special acids) to prevent corrosion.
  • polymer beads of a very narrow particle size distribution between 50 and 150 ⁇ based on polymethyl methacrylate and polyolefins application. Boric acid or adipic acid are added as an additive.
  • powdered release agents with corrosion protection and a liquid corrosion protection is used to prevent glass corrosion. The liquid corrosion protection is sprayed onto the glass. After the drying process, a pure release agent is used [http://www.acw-info.de/Aninstallen/Kategorien/Tré].
  • the common silicate glasses are chemically very resistant.
  • the acid character of the Si0 2 network causes this high resistance.
  • the Si0 2 network of the glass is not stable. The bonds of the network are broken up, which dissolves all the glass. If sufficiently stable constituents are present in the glass, then a layer that is not soluble in the alkaline range can form on the glass surface, which counteracts the alkaline attack.
  • the glass surface corrodes due to the effect of atmospheric moisture.
  • the water is initially in gaseous form.
  • condensation of small amounts of water on the glass surface occurs. This can be assumed to be approximately of chemically pure water.
  • This water initially leaches alkalis from the glass surface and thus becomes slightly basic.
  • the saturation limit of the solubility for various sparingly soluble glass reached parts. This results in the formation of adherent, difficult or impossible to remove layers on the glass surface.
  • the cleaning and leaching of the glass surface dominate during dishwashing, the formation of an undesirable surface layer prevails during the storage of flat glass.
  • US Pat. No. 5,731,277 A discloses a method for producing a dishwasher rinse aid intended to prevent the washing out of transition metals from tableware and containing aluminum compounds which form aluminum tetrahydroxide in solution.
  • No. 7,759,299 B2 describes a dishwashing detergent composition consisting of a detergent, an alkali source and a corrosion inhibitor.
  • the corrosion inhibitor contains a source of water-soluble aluminum ions and at least one source of calcium or magnesium ions.
  • the object of the invention is to develop a glass corrosion inhibitor with improved activity.
  • the object is achieved in that compounds of aluminum or particulate dust containing compounds of aluminum are used as corrosion inhibitors for glass.
  • all compounds of aluminum such as aluminum sulfate, aluminum phosphate, aluminum acetate, zeolite A, aluminum formate, aluminum nitrate, aluminum oxide, aluminum hydroxide and / or alkali aluminates are suitable.
  • Oxygen compounds of aluminum or particulate dust containing oxygen compounds of aluminum are preferably used as corrosion inhibitors for soda-lime silicate glasses in glass storage and in glass transport.
  • Particle dust is understood to mean powders of the compounds according to the invention having a particle size of from 10 to 80 ⁇ m, preferably from 15 to 70 ⁇ m, very particularly preferably from 20 to 65 ⁇ m.
  • Oxygen compounds of aluminum (aluminum oxide, aluminum hydroxide, alkali aluminate), in particular mixtures of aluminum hydroxide and sodium aluminate in a ratio of 2: 1 to 11: 1, particularly preferably mixtures of aluminum hydroxide and sodium metaaluminate in the ratio of 3: 1 to 8: 1, are preferred.
  • the ratios mentioned here denote mass ratios. These mixtures react weakly alkaline, but surprisingly show the best corrosion protection.
  • the corrosion-inhibiting effect is not bound to the addition to a release agent. Certain glass products require no release agent during storage. This is z. B. on the inner surface of container or tube glass the case.
  • the corrosion inhibitor can be used without additional plastic particles. It should be noted that the corrosion inhibitor is not between two touching glass surfaces. This can lead to mechanical damage to the glass surface.
  • the invention therefore also includes corrosion inhibitors for the treatment of shaped soda lime silicate glasses, z. B. for corrosion protection treatment of the inner surface of container or tube glass, which consists of powdered oxygen compounds of aluminum ums and optionally additives for better flowability and water repellency of the oxygen compounds of aluminum.
  • the powdery oxygen compounds are preferably aluminum oxide and / or aluminum hydroxide and / or alkali aluminate. Particularly preferred are mixtures of aluminum hydroxide and sodium metaaluminate in a mass ratio of 2: 1 to 1 1: 1, most preferably mixtures of aluminum hydroxide and sodium metaaluminate in a mass ratio of 3: 1 to 8: 1.
  • the grain size of the aluminum compounds is 10 to 80 ⁇ , preferably 15 to 70 ⁇ , most preferably 20 to 65 ⁇ .
  • the compounds of aluminum are added to the separating powders used as corrosion-inhibiting substances.
  • the grain size of the compounds of aluminum must be below that of the plastic particles used.
  • the release agents contain for this purpose plastic-based release powders and oxygen compounds of aluminum as anti-corrosion additive with a particle size smaller than the particles of the plastic-based release powder.
  • Plastic-based separating powders are polymethylmethacrylate (PMMA) or polyethylene powders.
  • the release agent contains oxygen compounds of aluminum in a proportion of 5 to 50% by weight, preferably 10 to 30% by weight.
  • Aluminum oxide, aluminum hydroxide, alkali aluminate, in particular mixtures of aluminum hydroxide and sodium metaaluminate in a mass ratio of 2: 1 to 1: 1, particularly preferably mixtures of aluminum hydroxide and sodium metaaluminate in a mass ratio of 3: 1 to 8: 1 are used as corrosion protection additive.
  • the grain size of the aluminum compounds is smaller than the grain size of the plastic particles. Under this condition, the grain size of the aluminum compounds is advantageously 10 to 80 ⁇ m, preferably 15 to 70 ⁇ m, very particularly preferably 20 to 65 ⁇ m.
  • the aluminum compounds and release agents according to the invention are advantageously used for the storage and transport of flat glasses.
  • the aluminum compounds and release agents according to the invention can be used in the range of tubular glass (for example for the production of fluorescent tubes) and in container glass.
  • Corrosion inhibitors are mainly acidic or partially neutral compounds, since basic compounds attack the silicate network of the glass surface and thus lead to an increase in corrosion. It is therefore surprising that the aluminum compounds and release agents according to the invention have a corrosive effect due to their basic character. This contradicts previously known corrosion protection and release agents. A basic product would promote glass corrosion.
  • the main advantage over known corrosion inhibitors lies in the small change in the glass surface. As a result, subsequent process steps of glass processing are facilitated. This has been confirmed by experiments with flat glass.
  • So flat glasses were powdered with release agents of the invention and stored Vi year at 10 - 20 ° C and 80% relative humidity.
  • the reference sample used was a standard separation powder. Two different powders with different concentrations of corrosion inhibitors were also used. Subsequently, they were subjected to a hydrolytic resistance test based on DI N 52296. The glass surface is exposed after thorough washing of the powder and any dirt a water attack with deionized water for 1 h at 121 ° C in an autoclave. If the surface is altered by glass corrosion, the concentration of the ions dissolved out changes as there is a different chemical composition of the glass surface. This change is much less pronounced with the samples stored with the new powders than with the reference sample powdered with the standard glassware product. As stated in the exemplary embodiment, mixtures of aluminum hydroxide and sodium metaaluminate in particular show a significantly better corrosion-inhibiting effect than the conventionally used products.
  • the glass corrosion forms a water-rich, low-alkali layer on the glass surface. This has a relation to the base glass modified refractive index. If this layer is relatively flat, it leads to a transmission increase in certain wavelength ranges.
  • the layer acts as a so-called ⁇ / 4 layer. Often, however, the layer is uneven, so that there is a diffuse scattering of the light and the transmission in certain wavelengths decreases significantly. Both effects are superimposed, so that on a sample in certain wavelength ranges to an increase in the transmission and in other areas to a reduction in transmission. Both effects are due to corrosion.
  • the corrosion index detects both effects by detecting the absolute value of the deviation of the transmission of the corroded sample from a non-corroded reference. This is described by the following equation.

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)

Abstract

La présente invention concerne l'utilisation de composés oxygénés d'aluminium ou de poussière de particules qui renferme des composés oxygénés d'aluminium en tant qu'agents de protection anticorrosion et agents de séparation pour des verres de silicate sodocalcique lors du stockage et du transport de verre. Les agents de séparation contiennent de la poudre de séparation à base de matière plastique, ainsi que des composés oxygénés d'aluminium présentant une granulométrie inférieure à celle des particules de la poudre de séparation à base de matière plastique, en tant qu'additif pour agent de protection anticorrosion.
EP13776472.6A 2012-10-12 2013-10-11 Utilisation de composés oxygénés d'aluminium en tant qu'agents de protection anticorrosion et agents de séparation pour des verres de silicate sodocalcique Withdrawn EP2906509A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012020094A DE102012020094B3 (de) 2012-10-12 2012-10-12 Verwendung von Sauerstoffverbindungen des Aluminiums oder Partikelstaub, der Sauerstoffverbindungen des Aluminiums enthält als Korrosionsschutzmittel für Glas
PCT/EP2013/071257 WO2014057081A1 (fr) 2012-10-12 2013-10-11 Utilisation de composés oxygénés d'aluminium en tant qu'agents de protection anticorrosion et agents de séparation pour des verres de silicate sodocalcique

Publications (1)

Publication Number Publication Date
EP2906509A1 true EP2906509A1 (fr) 2015-08-19

Family

ID=49323459

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13776472.6A Withdrawn EP2906509A1 (fr) 2012-10-12 2013-10-11 Utilisation de composés oxygénés d'aluminium en tant qu'agents de protection anticorrosion et agents de séparation pour des verres de silicate sodocalcique

Country Status (3)

Country Link
EP (1) EP2906509A1 (fr)
DE (1) DE102012020094B3 (fr)
WO (1) WO2014057081A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030131761A1 (en) * 2001-06-07 2003-07-17 Kazuyuki Hayashi Black colorant for ink-jet printing ink, ink-jet printing ink, and aqueous pigment dispersion containing the black colorant
US6599351B1 (en) * 1998-06-12 2003-07-29 Metallgesellschaft Aktiengesellschaft Anti-corrosive white pigments and method for producing the same
WO2010066403A2 (fr) * 2008-12-08 2010-06-17 Grace Gmbh & Co. Kg Particules anti-corrosives
WO2012051573A1 (fr) * 2010-10-15 2012-04-19 Bunge Fertilizantes S.A. Compositions de revêtement présentant des propriétés anticorrosion

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5624892A (en) * 1995-05-19 1997-04-29 Lever Brothers Company, Division Of Conopco, Inc. Process for incorporating aluminum salts into an automatic dishwashing composition
US5731277A (en) * 1996-06-21 1998-03-24 Lever Brothers Company, Division Of Conopco, Inc. Automatic dishwashing compositions containing aluminum tetrahydroxide
US6849328B1 (en) * 1999-07-02 2005-02-01 Ppg Industries Ohio, Inc. Light-transmitting and/or coated article with removable protective coating and methods of making the same
DE10127494B4 (de) * 2001-06-09 2005-07-07 Itn Nanovation Gmbh Hochtemperaturstabile anorganische Bornitridschichten
US7759299B2 (en) * 2006-07-24 2010-07-20 Ecolab Inc. Warewashing composition for use in automatic dishwashing machines
JPWO2010007956A1 (ja) * 2008-07-17 2012-01-05 旭硝子株式会社 撥水性基体およびその製造方法
DE102009025411B4 (de) 2009-06-16 2011-05-19 Innovent E.V. Technologieentwicklung Verwendung von Zinkstaubpartikeln oder Partikelstaub, der Zink oder eine Zinkverbindung enthält, als Korrosionsschutzmittel für Glas
WO2012044522A1 (fr) * 2010-09-30 2012-04-05 The Trustees Of The University Of Pennsylvania Revêtements nanoparticulaires en couche mince mécaniquement stables et leurs procédés de production

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6599351B1 (en) * 1998-06-12 2003-07-29 Metallgesellschaft Aktiengesellschaft Anti-corrosive white pigments and method for producing the same
US20030131761A1 (en) * 2001-06-07 2003-07-17 Kazuyuki Hayashi Black colorant for ink-jet printing ink, ink-jet printing ink, and aqueous pigment dispersion containing the black colorant
WO2010066403A2 (fr) * 2008-12-08 2010-06-17 Grace Gmbh & Co. Kg Particules anti-corrosives
WO2012051573A1 (fr) * 2010-10-15 2012-04-19 Bunge Fertilizantes S.A. Compositions de revêtement présentant des propriétés anticorrosion

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2014057081A1 *

Also Published As

Publication number Publication date
DE102012020094B3 (de) 2013-10-31
WO2014057081A1 (fr) 2014-04-17

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