EP1447461B1 - Produkt und verfahren zur reinigung von titanoberflächen - Google Patents

Produkt und verfahren zur reinigung von titanoberflächen Download PDF

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Publication number
EP1447461B1
EP1447461B1 EP01976326A EP01976326A EP1447461B1 EP 1447461 B1 EP1447461 B1 EP 1447461B1 EP 01976326 A EP01976326 A EP 01976326A EP 01976326 A EP01976326 A EP 01976326A EP 1447461 B1 EP1447461 B1 EP 1447461B1
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EP
European Patent Office
Prior art keywords
cleaning product
product according
fixative
descaling
propellant
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 - Lifetime
Application number
EP01976326A
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English (en)
French (fr)
Other versions
EP1447461A1 (de
Inventor
Francisco Cano Iranzo
Maria Isabel Vaquero Txapartegi
Alberto Pelayo Rivera
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.)
Fundacion Museo Guggenheim Bilbao
Fundacion Tecnalia Research and Innovation
Original Assignee
Fundacion Museo Guggenheim Bilbao
Fundacion Inasmet
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Publication of EP1447461A1 publication Critical patent/EP1447461A1/de
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Publication of EP1447461B1 publication Critical patent/EP1447461B1/de
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/042—Acids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/003—Colloidal solutions, e.g. gels; Thixotropic solutions or pastes
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0043—For use with aerosol devices
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/044—Hydroxides or bases
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/12—Water-insoluble compounds
    • C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
    • C11D3/1246—Silicates, e.g. diatomaceous earth
    • C11D3/1253—Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite
    • C11D3/1266—Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite in liquid compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/22—Carbohydrates or derivatives thereof
    • C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/10—Other heavy metals
    • C23G1/103—Other heavy metals copper or alloys of copper
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/10—Other heavy metals
    • C23G1/106—Other heavy metals refractory metals
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
    • C23G1/20—Other heavy metals
    • C23G1/205—Other heavy metals refractory metals
    • C11D2111/16—

Definitions

  • the invention concerns a cleaning product to clean titanium surfaces and its application in a procedure to clean titanium surfaces such as titanium facades and panels.
  • the excellent resistance of titanium and its alloys to corrosion is due to the formation of a protective film of oxides, which is continuous, stable and adheres strongly to the surface. Owing to the high affinity of titanium for oxygen, this film of oxides forms spontaneously as soon as a recent cut of the material is exposed to the atmosphere.
  • the nature, composition and thickness of the layer of protective oxides formed on the surface of the titanium depend on environmental conditions. In most aqueous environments, the oxide formed is TiO 2 , although also a mixture of TiO 2 , Ti 2 O 3 and TiO can also be formed. The naturally formed oxide films reach thicknesses of around 10 nm, which are not visible with the naked eye.
  • Some factors can alter the characteristics and composition of the TiO 2 layer, including the temperature or affinity of titanium for certain gases. Also, the presence of contamination or dirt on the metal surface can produce discontinuities in the surface that can give rise to severe localized corrosion processes. In the case of titanium panels used in construction and exposed to aggressive environmental, industrial and urban atmospheres, this type of phenomenon, which alters the surface characteristics of the panels and their composition, has been observed.
  • Cleaning and surface passivation methods used in normal conditions to eliminate this type of oxide and surface contamination require immersion processes that use different types of solutions. These include acid pickling, electropolishing or mechanical processes. These methods are not viable in panels used for construction purposes owing to their high cost and because they can alter the surface characteristics of the original panels.
  • Patent EP1029953 discloses a method for preparying titanium surfaces for use a polyaniline coated light-absorbing surfaces.
  • the titanium is subjected to alkaline degreasing followed by an acid descaling which produces a roughened surface and a chemical conversion treatment and finally a hydrolisis. Consequently, the surface appearance of the titanium is deliberately altered.
  • the invention in general, deals with the problem of providing a method to clean titanium surfaces such as the titanium panels used to build facades.
  • the solution provided by the invention is based on the development of a cleaning product that includes, separately, (i) a descaling substance, which contains an active agent that acts on the metal surface, composed of a mixture of inorganic acids, and (ii) a fixative, which inhibits and neutralizes the action of the descaling substance, and also in the application of this cleaning product to clean titanium surfaces.
  • the application of the cleaning product and the cleaning method provided by this invention permit easy and precise cleaning of the titanium surface without damaging it.
  • the invention provides a cleaning product, useful for cleaning titanium surfaces, that includes, separately, (A) a descaling or cleaning substance, from hereon called the descaling substance, which contains an active agent that acts on the metal surface, which is composed of a mixture of inorganic acids, and, (B) a fixative or neutralizer, from hereon referred to as the fixative, which inhibits and neutralizes the action of the descaling substance.
  • A a descaling or cleaning substance, from hereon called the descaling substance, which contains an active agent that acts on the metal surface, which is composed of a mixture of inorganic acids
  • B a fixative or neutralizer, from hereon referred to as the fixative, which inhibits and neutralizes the action of the descaling substance.
  • the cleaning product of the invention corresponds, separately, to:
  • composition of the descaling substance consists of water, an active agent and auxiliary agents (thickener, surfactant and indicator), as well as a propellant.
  • the active agent is comprised of a mixture of nitric and hydrofluoric acid, and acts on the metal surface (Ti), providing the chemical reaction responsible for eliminating the contamination, impurities and oxides. Beneficially, the active agent also has a protective effect to prevent progression of the cleaning chemical reaction on the metal substrate.
  • the active agent usually added in the form of an aqueous solution, is present in the descaling substance in a concentration ranging from 1 to 20% in weight relative to the total descaling composition.
  • this active agent consists of a mixture of nitric acid and hydrofluoric acid that contains between 1% and 10% in weight of nitric acid compared to the total descaling composition and between 0.1% and 1% in weight of hydrofluoric acid relative to the total descaling composition, and the weight ratio of nitric acid: hydrofluoric acid is 10:1.
  • the thickener is introduced in the descaling substance as a stabilizer, also giving it viscosity and selected rheological characteristics.
  • a thickening agent a water-soluble organic pseudoplastic thickener can be used, for example, of cellulotic type or a natural gum, for example xanthane gum.
  • the thickening agent can be present in the descaling substance in a concentration ranging from 0.1% to 1% in weight relative to the total descaling composition.
  • the surfactant alters the surface tension of the descaling substance, favoring the formation of foam, stabilization of this substance and dispersion of its components.
  • Potential surfactants include ionic ones (anionic or cationic), in concentrations ranging from 0.1 to 1% in weight compared to the total descaling composition. In one specific application this surfactant is sodium dodecyl sulphate.
  • the indicator is introduced in the descaling substance to indicate, by a color change, the time of neutralization of the descaling substance applied on the metallic surface by the fixative substance.
  • the indicator is present in the descaling substance at a concentration less than 0.1% in weight relative to the total weight of descaling substance.
  • the indicator used is phenolphthalein.
  • the water present in the descaling substance can come from the active agent (if the acids present are supplied in aqueous solution) and/or from the auxiliary agents (if these are provided dissolved or suspended in water) and/or from water added to make up the descaling solution.
  • the descaling substance can take one of several different forms, for example, it can be a foam, gel or a spray gel. Depending on its form of preparation and packaging, the descaling substance may or may not contain a propellant.
  • the propellant is a substance that provides the packaged descaling substance with a high internal pressure that results in its forced ejection onto the metallic surface to be cleaned.
  • the propellant can be a liquated or compressed gas.
  • Liquated gases are substances that are liquid at ambient temperature, due to the effect of pressure, and that become gaseous at atmospheric pressure. At a specific temperature, the high working pressure is constant and equals the vapor pressure of the liquated propellant. Vaporization of the propellant into the atmosphere favors spray formation or conversion into fine droplets of the non-volatile compounds in solution favoring the formation of microfoams.
  • liquated gases include hydrocarbons and hydrofluorocarbons (HFC), which can be used at a concentration ranging from 5% to 20% in weight relative to the total descaling composition.
  • the propellant is hydrofluorocarbon identified as HFC 134a (1,1,1,2-tetrafluoroethane).
  • Compressed gases are substances injected at appropriate pressures that maintain the excess pressure on the surface of the descaling substance in the container, forcing this to the exterior in the same way as an embolus that acts on the surface of a liquid, especially in the case of insoluble gases.
  • the gas occupies an increasingly larger volume, its initial pressure is reduced and, therefore, the initial working conditions change.
  • Nitrogen, carbon dioxide, nitrous oxide and air can be used in appropriate amounts at the required working pressure.
  • this descaling compound depends on the form or type of viscous vehicle concerned.
  • this descaling compound can take the form of:
  • the foam and spray gel products are prepared in pressurized containers resistant to acid media, from the following components [active agent, auxiliary agents (in gel form or as an aqueous mixture of thickener, surfactant and indicator), water and gas propellant, in the proportions appropriate to satisfy the percentages defined for the final desired product].
  • active agent active agent
  • auxiliary agents in gel form or as an aqueous mixture of thickener, surfactant and indicator
  • water and gas propellant in the proportions appropriate to satisfy the percentages defined for the final desired product.
  • application of the descaling substance is done, for example, by spraying with a gun, with a maximum interval of 3 hours between filling the container and application of the product, preferably less than 1 hour.
  • the gel type product is prepared in acid-resistant containers from the following components [active agent, gel or aqueous mixture of auxiliary agents (thickener, surfactant and indicator) and water, in appropriate proportions to satisfy the percentages defined for the final desired product].
  • active agent gel or aqueous mixture of auxiliary agents (thickener, surfactant and indicator) and water, in appropriate proportions to satisfy the percentages defined for the final desired product.
  • the fixative is comprised of a neutralizing active agent that stops the action of the descaling agent, neutralizing it, some auxiliary agents (thickener and surfactant), water and a propellant.
  • the neutralizing active agent inhibits the action of the acid present in the descaling substance when the fixative is applied to the metallic surface thus reducing the likelihood of a too aggressive attack of the acid on the metallic surface, neutralizing the cleaning product and favoring its collection and elimination.
  • a neutralizing active agent a base can be used, generally in the form of an aqueous solution, capable of neutralizing the acid present in the descaling substance.
  • this base can be an alkaline metal hydroxide, for example, sodium hydroxide, in a concentration of between 1% and 20% in weight relative to the total fixative composition, or trisodium phosphate, in a concentration of between 1% and the maximum permitted concentration relative to the fixative.
  • the thickener has the same function as mentioned previously relative to the descaling substance.
  • a thickening agent preferentially, inorganic products with a silicate base are used, for example, sepiolite, at a concentration ranging from 1 to 8% in weight relative to the total fixative composition, since this type of thickener can also neutralize the hydrofluoric acid of the descaling substance.
  • the surfactant fulfils the same function as that mentioned for the descaling substance.
  • the surfactant present in the fixative can correspond to ionic surfactants (anionic or cationic), that can be the same or different to those used in the descaling substance.
  • the surfactant can be present in the fixative in a concentration ranging from 0.1 to 1% in weight relative to the total fixative composition.
  • the water present in the fixative can either come from the neutralizing active agent (if the base is supplied in aqueous solution) and/or from auxiliary agents (in the case that these are supplied dissolved or suspended in water) and/or of water that is incorporated to make up the volume of the fixative.
  • the propellant which can be a liquated gas or a compressed gas, fulfils the same function as that mentioned previously relative to the descaling substance.
  • the propellant present in the fixative compound can be the same as or different to that used in the descaling substance(if this contains propellant).
  • the propellant can be present in the fixative substance in a concentration ranging from 5 to 20% in weight relative to the total fixative composition when the propellant is a liquated gas, for example, a hydrocarbon or a HFC, such as HFC 134a.
  • a compressed gas for example, nitrogen, carbon dioxide, nitrous oxide or air
  • this propellant is used, as mentioned previously, in the appropriate quantity at the working temperature required.
  • the fixative can take any suitable form of presentation such as foam(FF) when the propellant is a liquated gas or in the form of spray gel (SGF) when the propellant is a compressed gas.
  • foam(FF) when the propellant is a liquated gas
  • SGF spray gel
  • Both products are kept in pressurized containers resistant to alkaline media, and are composed of the following components [neutralizing active agents, auxiliary agents (in the form of gel or an aqueous mixture of thickener and surfactant) in proportions that satisfy the percentages defined for the final desired product and propellant gas].
  • Application of the fixative substance is done, for example, by spraying with a gun, with a maximum interval between filling the container and application of the product of 3 hours, but preferably less than 1 hour.
  • the invention provides a cleaning product, useful for cleaning titanium surfaces, that also has, separately, the characteristics listed in Table 1.
  • the composition of which is recorded in Table 1 in the descaling composition the active agent is a mixture of 60%HNO 3 and 48% HF, the thickening agent is xanthane gum, the surfactant is sodium dodecyl sulphate, the indicator is phenolphthalein and the propellant (liquated gas) is HFC 134a.
  • the composition of which is shown in Table 1 in the fixative composition, the base is sodium hydroxide, the thickening agent is sepiolite, the surfactant is sodium dodecyl sulfate and the propellant (liquated gas) is HFC 134a.
  • the cleaning product of the invention is useful for cleaning titanium surfaces, especially, titanium building facades. Therefore, the invention provides a method to clean titanium surfaces that consists of using the cleaning product of this invention. More specifically, this method corresponds to the following stages of:
  • Stage a) or the descaling stage consists in applying the descaling substance of the cleaning product of the invention, homogeneously over the whole titanium surface to be cleaned, which is preferentially dry.
  • the titanium surface is dried using instruments that do not cause mechanical damage of the metallic surface.
  • this is administered in one way or another.
  • foam descaling substances (FD) and spray gel descaling substances (SGD) are applied using the appropriate spray gun, while the gel descaling substance (GD) is applied with a sponge trowel taking care not to cause mechanical damage of the metallic surface.
  • FD foam descaling substances
  • SGD spray gel descaling substances
  • Stage b) or the fixative stage consists in applying the fixative of the cleaning product of the invention to the metallic surface previously treated with the descaling substance in stage a) ensuring that the surface is completely and homogeneously covered.
  • the fixative as foam (FF) and spray gel (SGF) are applied using an appropriate spray gun. After applying the fixative, this is left to act for 30 seconds to 5 minutes before proceeding to the following stage, confirming beforehand that the active neutralizing agent of the fixative substance has neutralized the acid present in the fixative, indicated by the color change of the indicator, or, alternatively, by the use of pH paper indicator strips.
  • stage c) or the aspiration stage is carried out, in which the previously treated titanium surfaces are aspirated to remove the cleaning products from this previously treated surface.
  • This aspiration is applied carefully using the appropriate equipment to avoid producing chemical or mechanical damage to the metallic surface.
  • step d) or the rinsing is carried out, in which a water jet at a temperature between 5 and 30°C is applied to eliminate the remains of products used in previous stages.
  • the titanium surface to be cleaned is a titanium building facade or titanium panels to be used for the construction of facades.
  • Both the descaling substance and the fixative are prepared and packaged in foam form by incorporating different compounds in the desired amounts.
  • Titanium panels will be cleaned using cleaning products prepared according to Example 1.1. This will be done by following the protocol described below:
  • the cleaning products tested showed their efficacy at cleaning the treated titanium panels.

Claims (39)

  1. Reinigungsprodukt, das separat zusammengesetzt ist aus:
    A) einer Entzunderungssubstanz, bestehend aus:
    A.1) einer Mischung aus Salpetersäure und Flusssäure;
    A.2) einem Verdickungsmittel;
    A.3) einem oberflächenaktiven Stoff;
    A.4) einem Indikator;
    A.5) Wasser; und optional
    A.6) einem Treibmittel; und
    B) einem Fixationsmittel, bestehend aus:
    B.1) einer Base;
    B.2) einem Verdickungsmittel;
    B.3) einem oberflächenaktiven Stoff;
    B.4) Wasser; und
    B.5) einem Treibmittel.
  2. Reinigungsprodukt nach Anspruch 1, bei dem diese Mischung aus Salpetersäure und Flusssäure in dieser Entzunderungssubstanz in einer Konzentration zwischen 1 und 20 Gewichtsprozent bezogen auf die gesamte Entzunderungszusammensetzung vorliegt.
  3. Reinigungsprodukt nach Anspruch 1, bei dem das Gewichtsverhältnis von Salpetersäure zu Flusssäure 10:1 beträgt.
  4. Reinigungsprodukt nach Anspruch 1, bei dem das in der Entzunderungszusammensetzung vorhandene Verdickungsmittel vom wasserlöslichen organischen pseudoplastischen Typ ist.
  5. Reinigungsprodukt nach Anspruch 4, bei dem dieses wasserlösliche organische pseudoplastische Verdickungsmittel aus Verdickungsmittels vom Zellstofftyp und natürlichen Gummis ausgewählt ist.
  6. Reinigungsprodukt nach Anspruch 5, bei dem das Verdickungsmittel Xanthan-Gummi ist.
  7. Reinigungsprodukt nach Anspruch 1, bei dem die Entzunderungssubstanz das Verdickungsmittel in einer Konzentration zwischen 0,1 und 1 Gewichtsprozent bezogen auf die gesamte Entzunderungszusammensetzung enthält.
  8. Reinigungsprodukt nach Anspruch 1, bei dem der in der Entzunderungssubstanz vorhandene oberflächenaktive Stoff unter anionischen und kationischen oberflächenaktiven Stoffen ausgewählt ist.
  9. Reinigungsprodukt nach Anspruch 8, bei dem der oberflächenaktive Stoff Natriumdodecylsulfat ist.
  10. Reinigungsprodukt nach Anspruch 1, bei dem die Entzunderungssubstanz den oberflächenaktiven Stoff in einer Konzentration zwischen 0,1 und 1 Gewichtsprozent bezogen auf die gesamte Entzunderungszusammensetzung enthält.
  11. Reinigungsprodukt nach Anspruch 1, bei dem der Indikator Phenophthalein ist.
  12. Reinigungsprodukt nach Anspruch 1, bei dem der Indikator in der Entzunderungssubstanz in einer Konzentration von weniger als 0,1 Gewichtsprozent bezogen auf die gesamte Entzunderungszusammensetzung vorliegt.
  13. Reinigungsprodukt nach Anspruch 1, bei dem das in der Entzunderungszusammensetzung vorhandene Treibmittel ein verflüssigtes Gas ist, das unter Kohlenwasserstoffen und Fluorkohlenwasserstoffen (HFC) gewählt ist.
  14. Reinigungsprodukt nach Anspruch 13, bei dem das Treibmittel HFC 134a ist.
  15. Reinigungsprodukt nach Anspruch 1, bei dem die Entzunderungszusammensetzung als Treibmittel ein verflüssigtes Gas in einer Konzentration zwischen 5 und 20 Gewichtsprozent bezogen auf die gesamte Entzunderungszusammensetzung enthält.
  16. Reinigungsprodukt nach Anspruch 1, bei dem das in der Entzunderungssubstanz vorhandene Treibmittel ein Druckgas ist.
  17. Reinigungsprodukt nach Anspruch 16, bei dem das Druckgas Stickstoff, Kohlendioxid, Stickoxid oder Luft ist.
  18. Reinigungsprodukt nach Anspruch 1, bei dem die in der Fixationsmittelzusammensetzung vorhandene Base entweder ein Alkalimetallhydroxid oder Trinatriumphosphat ist.
  19. Reinigungsprodukt nach Anspruch 18, bei dem die in der Fixationsmittelzusammensetzung vorhandene Base Natriumhydroxid ist.
  20. Reinigungsprodukt nach Anspruch 1, bei dem die Base in dem Fixationsmittel in einer Konzentration zwischen 1 und 20 Gewichtsprozent bezogen auf die gesamte Fixationsmittelzusammensetzung vorliegt.
  21. Reinigungsprodukt nach Anspruch 1, bei dem das in dem Fixationsmittel vorliegende Verdickungsmittel ein anorganische auf Silicat basierendes Verdickungsmittel ist.
  22. Reinigungsprodukt nach Anspruch 21, bei dem das Verdickungsmittel Sepiolith ist.
  23. Reinigungsprodukt nach Anspruch 1, bei dem das Fixationsmittel das Verdickungsmittel in einer Konzentration zwischen 1 und 8 Gewichtsprozent bezogen auf die gesamte Fixationsmittelzusammensetzung enthält.
  24. Reinigungsprodukt nach Anspruch 1, bei dem der in der Fixationsmittelzusammensetzung vorhandene oberflächenaktive Stoff aus anionischen oder kationischen oberflächenaktiven Stoffen gewählt ist.
  25. Reinigungsprodukt nach Anspruch 24, bei dem der oberflächenaktive Stoff Natriumdodecylsulfat ist.
  26. Reinigungsprodukt nach Anspruch 1, bei dem das Fixationsmittel den oberflächenaktiven Stoff in einer Konzentration zwischen 0,1 und 1 Gewichtsprozent bezogen auf die gesamte Fixationsmittelzusammensetzung enthält.
  27. Reinigungsprodukt nach Anspruch 1, bei dem das in dem Fixationsmittel vorhandene Treibmittel ein verflüssigtes Gas ist, das unter Kohlenwasserstoffen und Fluorkohlenwasserstoffen (HFC) gewählt ist.
  28. Reinigungsprodukt nach Anspruch 27, bei dem das Treibmittel HFC 134a ist.
  29. Reinigungsprodukt nach Anspruch 1, bei dem das Fixationsmittel als Treibmittel ein verflüssigtes Gas in einer Konzentration zwischen 5 und 20 Gewichtsprozent bezogen auf das gesamte Fixationsmittel enthält.
  30. Reinigungsprodukt nach Anspruch 1, bei dem das in dem Fixationsmittel vorhandene Treibmittel ein Druckgas ist.
  31. Reinigungsprodukt nach Anspruch 30, bei dem das Druckgas Stickstoff, Kohlendioxid, Stickoxid oder Luft ist.
  32. Reinigungsprodukt nach Anspruch 1, das separat aufweist:
    A) eine Entzunderungssubstanz, enthaltend:
    eine Mischung aus: Salpetersäure (HNO3 1-10% Flusssäure (HF) 0,1-1% wobei das Gewichtsverhältnis von HNO3:HF beträgt: 10:1 ein Verdickungsmittel 0,1-1% einen oberflächenaktiven Stoff 0,1-1% einen Indikator <0,1% ein Treibmittel (verflüssigtes Gas) 5-20% Wasser (je nach Bedarf) 100%
    wobei die Prozentanteile Gewichtsprozentanteile bezogen auf die gesamte Entzunderungssubstanz sind; und
    B) ein Fixationsmittel, enthaltend: eine Base 5-15% ein Verdickungsmittel 2-8% einen oberflächenaktiven Stoff 0,1 - 1% ein Treibmittel (verflüssigtes Gas) 5-20% Wasser (je nach Bedarf) 100%
    wobei die Prozentanteile Gewichtsprozentanteile bezogen auf die gesamte Fixationsmittelzusammensetzung sind.
  33. Reinigungsprodukt nach Anspruch 32, welches separat enthält:
    A) eine Entzunderungssubstanz, aufweisend:
    eine Mischung aus: HNO3 60% 1-10% HF 48% 0,1-1% mit einem Gewichtsverhältnis von HNO3:HF von 10: 1 Xanthan-Gummi 0,1-1% Natriumdodecylsulfat 0,1-1% Phenolphthalein <0,1% HFC 143a (verflüssigtes Gas) 5-20% Wasser (je nach Bedarf) 100%
    wobei die Prozentanteile Gewichtsprozentanteile bezogen auf die gesamte Entzunderungszusammensetzung sind; und
    B) ein Fixationsmittel, aufweisend: NaOH 5-15% Sepiolith 2-8% Natriumdodecylsulfat 0,1-1% HFC 143a (verflüssigtes Gas) 5-20% Wasser (je nach Bedarf) 100%
    wobei die Prozentanteile Gewichtsprozentanteile bezogen auf die gesamte Fixationsmittelzusammensetzung sind.
  34. Reinigungsprodukt nach Anspruch 1, bei dem die Entzunderungszusammensetzung als Schaum, Sprühgel oder Gel vorliegt.
  35. Reinigungsprodukt nach Anspruch 1, bei dem das Fixationsmittel als Schaum oder Sprühgel vorliegt.
  36. Verfahren zum Reinigen von Titanoberflächen, bezogen auf die Anwendung eines Reinigungsprodukts nach einem der Ansprüche 1 bis 35, wobei das Verfahren die folgenden Schritte umfasst:
    a) Aufbringen der Entzunderungssubstanz des Reinigungsprodukts auf der zu reinigenden Oberfläche und Belassen derselben zum Einwirken über eine bestimmte Zeitdauer;
    b) Aufbringen des Fixationsmittels des Reinigungsprodukts auf die zuvor im Schritt a) mit der Entzunderungssubstanz behandelten Titanoberfläche und Belassen desselben zum Einwirken über eine bestimmte Zeitdauer;
    c) Absaugen der in den Schritten a) und b) zuvor mit der Entzunderungs- und Fixationsmittelsubstanz behandelten Titanoberfläche; und
    d) Abspülen der behandelten Titanoberfläche nach der Durchführung des Schritts c).
  37. Verfahren nach Anspruch 36, bei dem das Aufbringen der Entzunderungssubstanz auf die zu reinigende Titanoberfläche mittels einer Spritzpistole oder einem Schwammputzbrett erfolgt und diese zum Einwirken über einen Zeitraum von 15 Sekunden bis 10 Minuten belassen wird, bevor das Fixationsmittel aufgebracht wird.
  38. Verfahren nach Anspruch 36, bei dem das Aufbringen des Fixationsmittels auf die zu reinigende, zuvor mit der Entzunderungssubstanz behandelte Titanoberfläche mittels einer Spritzpistole erfolgt, und dieses zum Einwirken über einen Zeitraum zwischen 15 Sekunden und 5 Minuten belassen wird, bevor der Schritt c) nach der Feststellung, dass die Neutralisierung stattgefunden hat, begonnen wird.
  39. Verfahren nach Anspruch 36, bei dem das Abspülen der behandelten Titanoberfläche mit Wasserstrahlen bei einer Temperatur zwischen 5°C und 30°C erfolgt.
EP01976326A 2001-10-24 2001-10-24 Produkt und verfahren zur reinigung von titanoberflächen Expired - Lifetime EP1447461B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2001/000401 WO2003035933A1 (es) 2001-10-24 2001-10-24 Producto y método para la limpieza de superficies de titanio

Publications (2)

Publication Number Publication Date
EP1447461A1 EP1447461A1 (de) 2004-08-18
EP1447461B1 true EP1447461B1 (de) 2007-12-12

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EP (1) EP1447461B1 (de)
JP (1) JP2005506452A (de)
AT (1) ATE380891T1 (de)
BR (1) BR0117162A (de)
CA (1) CA2463954A1 (de)
DE (1) DE60131908D1 (de)
ES (1) ES2294034T3 (de)
WO (1) WO2003035933A1 (de)

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Publication number Publication date
ATE380891T1 (de) 2007-12-15
BR0117162A (pt) 2004-09-08
WO2003035933A1 (es) 2003-05-01
EP1447461A1 (de) 2004-08-18
JP2005506452A (ja) 2005-03-03
US20040221870A1 (en) 2004-11-11
CA2463954A1 (en) 2003-05-01
ES2294034T3 (es) 2008-04-01
DE60131908D1 (de) 2008-01-24

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