EP1036215A2 - Agent anticorrosion exempt de chrome et procede de protection contre la corrosion - Google Patents

Agent anticorrosion exempt de chrome et procede de protection contre la corrosion

Info

Publication number
EP1036215A2
EP1036215A2 EP98965188A EP98965188A EP1036215A2 EP 1036215 A2 EP1036215 A2 EP 1036215A2 EP 98965188 A EP98965188 A EP 98965188A EP 98965188 A EP98965188 A EP 98965188A EP 1036215 A2 EP1036215 A2 EP 1036215A2
Authority
EP
European Patent Office
Prior art keywords
corrosion protection
protection agent
agent according
corrosion
ions
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.)
Ceased
Application number
EP98965188A
Other languages
German (de)
English (en)
Inventor
Stefan Küpper
Reinhard Seidel
Brigitte Calaminus
Christina Hirsch
Alf Ruggieri
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of EP1036215A2 publication Critical patent/EP1036215A2/fr
Ceased legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/40Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
    • C23C22/44Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also fluorides or complex fluorides
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D191/00Coating compositions based on oils, fats or waxes; Coating compositions based on derivatives thereof
    • C09D191/06Waxes
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/61Additives non-macromolecular inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/65Additives macromolecular
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/40Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
    • C23C22/42Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also phosphates

Definitions

  • the present invention relates to a chromium-free corrosion protection agent and a corrosion protection method for the treatment of surfaces made of hot-dip galvanized or electrolytically galvanized steel, alloy-galvanized steel or of aluminum and its alloys. It is particularly suitable for surface treatment in conveyor systems.
  • galvanized or alloy-galvanized steel strips are either simply oiled or phosphated or chromated if higher corrosion stresses are to be expected.
  • these measures are not sufficient in the case of particularly high corrosive loads such as ship transport in a salty sea atmosphere or storage in a tropical environment.
  • the best temporary corrosion protection measure known in the prior art is chromating, in which the metal surfaces are coated with a layer containing chromium (III) and / or chromium (VI) with a layer of generally about 5 to about 15 mg / m 2 Chrome plated. Because of the known toxicological problems of chromium compounds, this process is disadvantageous and complex from the aspects of occupational safety, ecology and the necessary disposal.
  • Phosphating as an alternative measure for temporary corrosion protection can undesirably change the appearance of the metal surfaces.
  • phosphating is complex in terms of plant technology, since depending on the substrate material it requires an additional activation step and, as a rule, a passivation step after the phosphating step. Passivation is often carried out with chromium-containing treatment solutions, which also results in the disadvantages mentioned above of using chromium-containing treatment solutions.
  • metal strips are increasingly being processed, which are already provided with a corrosion protection layer by the manufacturer of the strips. Such materials are known for example under the names Durasteel R , Bonazinc R and Durazinc R.
  • the organic coating consists of polymer systems such as epoxy or polyurethane resins, polyamides and polyacrylates. Solid additives such as silica, zinc dust and soot improve the protection against corrosion and, due to their electrical conductivity, allow the metal parts coated with layers with a thickness of approximately 0.3 to approximately 5 ⁇ m to be electrically welded and electrolytically painted.
  • the coating of the substrate materials is generally carried out in a two-stage process which is complex in terms of plant technology, in which the inorganic conversion layer is first produced and then the organic polymer film is applied in a second treatment stage.
  • US Pat. No. 5,344,504 describes a coating process for galvanized steel, in which the substrate is brought into contact with a treatment solution having the following composition: 0.1 to 10 g / l of a tetra- or hexafluoro acid of boron, silicon, Titanium and zircon or hydrofluoric acid, about 0.015 to about 6 g / l cations of cobalt, copper, iron, manganese, nickel, strontium or zinc and optionally up to about 3 g / l of a polymer selected from polyacrylic acid, poly methacrylic acid and their esters.
  • the pH of this treatment solution is in the range from about 4 to about 5.
  • WO 95/14117 also describes a method for treating surfaces made of zinc or aluminum or their alloys.
  • the surfaces are brought into contact with a treatment solution with a pH value below 3, which contains a complex between a metal oxoion and a heteroion.
  • the metal oxoion is selected from molybdate, tungstate and vanadate.
  • the heteroion is selected from phosphorus, aluminum, silicon, manganese, magnesium, zirconium, titanium, tin, cerium and nickel.
  • the treatment solution also contains an organic film former which is compatible with the other components of the solution. Examples of suitable film formers are polyacrylates, such as, in particular, polymers of methyl methacrylate, n-butyl acrylate, hydroxyethyl acrylate and glycerol propoxy triacrylate.
  • EP-A-694 593 recommends treating the metal surfaces with a treatment solution which contains the following components: an organic polymer or copolymer in which 0.5 to 8% of the monomers carry groups which can form compounds with metal ions, complex cations or Anions of aluminum, calcium, cerium, cobalt, molybdenum, silicon, vanadium, zircon, titanium, trivalent chromium and zinc, an oxidizing agent such as nitric acid, perchloric acid or hydrogen peroxide and an acid such as oxalic acid, acetic acid, boric acid, phosphoric acid, sulfuric acid, nitric acid or Hydrochloric acid.
  • an organic polymer or copolymer in which 0.5 to 8% of the monomers carry groups which can form compounds with metal ions, complex cations or Anions of aluminum, calcium, cerium, cobalt, molybdenum, silicon, vanadium, zircon, titanium, trivalent chromium and zinc
  • an oxidizing agent such as
  • WO 95/04169 teaches the treatment of metal surfaces with a treatment solution which contains at least the following components: fluorocomplexes of titanium, zirconium, hafnium, silicon, aluminum and boron, metal ions selected from cobalt, magnesium, manganese, zinc, nickel, tin, copper , Zircon, iron and strontium, phosphates or phosphonates and water-soluble or water-dispersible organic film formers.
  • EP-A-792 922 describes a chromium-free corrosion-inhibiting coating composition which contains a film-forming organic polymer and (i) a salt selected from esters of rare earth metals, alkali or alkaline earth metal adadate and furthermore (ii) a borate salt of an alkaline earth metal.
  • a film-forming organic polymer and (i) a salt selected from esters of rare earth metals, alkali or alkaline earth metal adadate and furthermore (ii) a borate salt of an alkaline earth metal.
  • preferred polymers are epoxides including polyimide-based epoxies, polyurethanes, acrylic polymers and alkyd-based systems.
  • this coating composition must therefore contain at least one borate and a further component, which can be a vanadate.
  • the invention relates to a chromium-free anti-corrosion agent containing water and a) 0.5 to 10 g / l hexafluoro anions of titanium (IV) and / or zirconium (IV), b) 5 to 15 g / l vanadium ions, c) 0, 5 to 2 g / l of transition metal ions d) 30 to 150 g / l of phosphoric acid and / or phosphonic acid and e) optionally other active ingredients or auxiliaries.
  • the transition metal ions are preferably selected from manganese ions of oxidation state 2 to 7, iron ions and cobalt ions.
  • Preferred concentration ranges of components a) to c) are: a) 1 to 3 g / l hexafluoro anions of titanium (IV) and / or zirconium (IV), b) 6 to 10 g / l vanadium ions and c) 0.6 up to 1.2 g / l transition metal ions.
  • the pH of the anticorrosive agent is in the range from 0.5 to 2.5, preferably in the range from 1.0 to 2.1 and in particular in the range from 1.4 to 2.0.
  • Such an agent dissolves the metal surfaces, so that an incorporated treatment bath can additionally contain cations that originate from the treated substrates. Examples of this are zinc and aluminum and optionally further alloy components such as iron, nickel and copper.
  • the anti-corrosion agent can contain other auxiliaries or active ingredients.
  • it can additionally contain about 0.5 to about 10 g / l, in particular about 1 to about 5 g / l, of non-complex-bound fluoride ions as a further active ingredient.
  • These can be used as hydrofluoric acid or as a soluble fluoride such as, for example, alkali metal or ammonium fluoride. Regardless of the compound used, the fluoride ions at the pH of the anti-corrosion agent will largely be present as undissociated hydrofluoric acid.
  • the corrosion protection agent can additionally contain about 1 to about 30 g / l, in particular about 10 to about 25 g / l, of a conductivity pigment as a further active ingredient.
  • a conductivity pigment as a further active ingredient.
  • suitable conductivity pigments are: carbon black, graphite, molybdenum sulfide, barium sulfate doped with tin or antimony and iron phosphide. Iron phosphide (Ferrophos, Fe 2 P) is particularly preferred. It is preferably used in amounts of about 20 g / l.
  • the corrosion protection agent can additionally contain about 0.5 to about 50 g / l polyethylene wax as a further active ingredient.
  • the wax components make the coating lubricious and thus improve the forming behavior of the substrates treated with the anti-corrosion agent. As a result, it is not necessary in the case of forming processes to apply forming oils to the surfaces.
  • the corrosion protection agent preferably additionally contains about 15 to about 200 g / l, in particular about 50 to about 150 g / l, of an organic film former.
  • an organic film former ensures that no components of the corrosion protection layer formed by the action of the corrosion protection agent are detached in subsequent cleaning processes. In conjunction with the polyethylene wax, the organic film former further improves the forming behavior.
  • the organic film former can be selected, for example, from epoxy resins, polyurethane resins and polymers or copolymers of styrene, butadiene, acrylic acid, methacrylic acid and / or maleic acid and the esters of these acids or from precursors of these polymers. Film formers which crosslink at a temperature below 180 ° C. and in particular below 170 ° C. are preferred.
  • the organic film formers can be dissolved or dispersed in the anti-corrosion agent.
  • An example of this is an aqueous mixture of sodium polyacrylate and polyacrylic acid, which is commercially available with a solids content of 51% by weight and has a pH in the range from 2 to 3.
  • Film formers based on acrylic acid and / or methacrylic acid and their esters with alcohols having 1 to about 6 carbon atoms are preferred. These polymers or copolymers preferably have a glass transition temperature in the range from 20 to 25 ° C.
  • the organic film-forming agent can be an epoxy resin that can be formulated in one component with an integrated hardener or in two components with a separate hardener. Water-dilutable systems are preferably chosen for this. Amines or polyamines are particularly suitable as hardeners for the epoxy resins.
  • the epoxy resins are generally marketed as aqueous dispersions with resin contents in the range between about 50 and about 60%.
  • these dispersions contain small amounts of organic solvents such as isopropanol or methoxypropanol. Furthermore, they usually contain an emulsifier, which can also be directly condensed onto the epoxy resin. If such two-component epoxy resin systems are used in the context of the present invention, the epoxy resin dispersion mixed with the inorganic corrosion protection components on the one hand and the hardener component on the other hand can be stored in two separate containers and transported to the place of use. The two components are then mixed together shortly before use.
  • An alternative to such two-component formulations are single-component epoxy resin systems that contain an integrated hardener.
  • the integrated hardener can be an amine adduct, for example, which only cleaves the free amine when heated and thereby initiates the hardening process.
  • the anti-corrosion agent can contain about 0.5 to about 2% by weight of a silane-based adhesion promoter.
  • silane-based adhesion promoter examples include aminopropyltriethoxysilane and glycidoxypropyltrimethoxysilane.
  • the corrosion protection agent preferably contains 2 to 8 g / l zinc ions.
  • the invention relates to a method for the corrosion-protective treatment of surfaces of galvanized or alloy-galvanized steel or of aluminum or its alloys, characterized in that the surfaces are treated with a corrosion protection agent according to the invention described above for a period of time in the range from 2 to 60 seconds Brings contact and then with or without Intermediate rinsing with water at a substrate temperature (“peak metal temperature”) in the range from 50 to 180 ° C. dries.
  • the method can therefore be used on the one hand on galvanized or alloy-galvanized steel.
  • the steel may have been coated electrolytically or in a hot dip process with zinc or a zinc alloy.
  • Zinc / nickel, zinc / iron and zinc / aluminum alloys are particularly suitable as zinc alloys.
  • the process is suitable for treating surfaces made of aluminum or its alloys.
  • aluminum alloys are generally used instead of pure aluminum.
  • the main alloy components are zinc, magnesium, silicon and copper.
  • the method is suitable on the one hand as a pretreatment before painting. However, it can also be used for corrosion protection of metal parts that are not subjected to subsequent painting.
  • the process creates a passivation layer on the metal surface that protects the base metal from corrosion even without an additional layer of paint.
  • the process is particularly suitable for treating metal strips in strip systems.
  • the action times of the treatment agent until the start of drying are then in the range of a few seconds, for example between about 1 and about 20 and in particular between about 4 and about 12 seconds.
  • the corrosion protection agent can be applied to the metal surfaces in various ways known in the art.
  • the anti-corrosion agent can be sprayed onto the metal surfaces or the surfaces can be wetted by immersing them in the treatment agent. In both cases, it is preferable to lay excess treatment solution on a predetermined wet film layer, which leads to the desired dry layer layer of approximately 0.5 to approximately 5 g / m 2 and in particular approximately 0.8 to approximately 3 g / m 2 .
  • the anti-corrosion agent is preferably applied to the metal strips with application rollers, such as are known, for example, as chemcoaters.
  • application rollers such as are known, for example, as chemcoaters.
  • the desired one Set the wet film thickness directly.
  • the anti-corrosion agent remains on the belt with the desired wet film thickness and is dried in without intermediate rinsing. The drying takes place in preheated ovens, by heating by induction or by the action of infrared rays in such a way that the substrate has a temperature (“peak metal temperature”) in the range from about 50 to about 180 ° C. and in particular in the range from about 100 to about 170 ° C.
  • an optional organic film former hardens.
  • the strips can be brought into contact with the treatment solution according to the invention without prior cleaning.
  • the metal strips to be treated were stored and / or transported before the coating according to the invention, they are usually provided with anti-corrosion oils or at least so far soiled that cleaning before the treatment according to the invention is necessary. This can be done with weakly to strongly alkaline cleaners customary in the prior art, with aluminum and its alloys also with acidic cleaners.
  • Tables 1 and 2 contain exemplary corrosion protection agents according to the invention. They were produced by mixing the individual components together in the order mentioned at room temperature. The pH was adjusted with additional phosphoric acid if necessary. Sheets made of hot-dip galvanized and electrolytically galvanized steel were used as the substrate. These were cleaned with a commercially available strong alkaline cleaner before treatment with the anti-corrosion agent. The application to the metal surfaces was carried out with a paint spinner at 550 revolutions / minute. The exposure time before the start of drying was 15 seconds. The drying / baking of the coating was carried out at a substrate temperature (“peak metal temperature”) of 100 ° C. place the coated test trays in a convection oven heated to 300 ° C for 20 seconds.
  • peak metal temperature 100 ° C.
  • test panels were partially subjected to a salt spray test in accordance with DIN 5002155 without further painting. After a test period of 48 hours, the corrosion was visually assessed on 3 sample plates treated in the same way. Sheets without corrosion received the grade 0, sheets with more than 50% corrosion the grade 5. The results are summarized in Table 3. A degree of corrosion ⁇ 3 is considered acceptable.
  • Table 1 Composition of the anti-corrosion agents (parts by weight)
  • Table 2 Composition of other anti-corrosion agents (parts by weight)
  • HDG hot-dip galvanized steel
  • ZE electrolytically galvanized steel

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Inorganic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Paints Or Removers (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Laminated Bodies (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

L'invention concerne un agent anticorrosion aqueux exempt de chrome s'utilisant pour traiter des surfaces en acier galvanisé ou galvanisé par alliage, ainsi qu'en aluminium. Cet agent contient comme principaux constituants: a) entre 0,5 et 10 g/l d'hexafluoro-anions de titane (IV) et/ou de zircon (IV), b) entre 5 et 15 g/l d'ions de vanadium, c) entre 0,5 et 2 g/l d'ions de métal de transition, de préférence Mn, Fe, Co, d) entre 30 et 150 g/l d'acide phosphorique et/ou d'acide phosphonique. Cet agent anticorrosion contient de préférence en outre un agent filmogène organique, notamment à base de polyacrylate. L'agent anticorrosion contient de plus de préférence un pigment de conductivité. Cet agent anticorrosion s'utilise notamment pour appliquer des traitements anticorrosion à de feuillards, avec ou sans laquage subséquent, et est appliqué de préférence de manière à obtenir sur la surface un revêtement à couche sèche comprise entre 0,5 et 5 g/m<2>.
EP98965188A 1997-12-05 1998-11-26 Agent anticorrosion exempt de chrome et procede de protection contre la corrosion Ceased EP1036215A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1997154108 DE19754108A1 (de) 1997-12-05 1997-12-05 Chromfreies Korrosionsschutzmittel und Korrosionsschutzverfahren
DE19754108 1997-12-05
PCT/EP1998/007643 WO1999029927A2 (fr) 1997-12-05 1998-11-26 Agent anticorrosion exempt de chrome et procede de protection contre la corrosion

Publications (1)

Publication Number Publication Date
EP1036215A2 true EP1036215A2 (fr) 2000-09-20

Family

ID=7850931

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98965188A Ceased EP1036215A2 (fr) 1997-12-05 1998-11-26 Agent anticorrosion exempt de chrome et procede de protection contre la corrosion

Country Status (8)

Country Link
EP (1) EP1036215A2 (fr)
JP (1) JP2001526324A (fr)
KR (1) KR20010024643A (fr)
AR (1) AR010965A1 (fr)
AU (1) AU2050299A (fr)
CA (1) CA2312807A1 (fr)
DE (1) DE19754108A1 (fr)
WO (1) WO1999029927A2 (fr)

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DE102006053291A1 (de) 2006-11-13 2008-05-15 Basf Coatings Ag Lackschichtbildendes Korrosionsschutzmittel mit guter Haftung und Verfahren zu dessen stromfreier Applikation
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JP2001526324A (ja) 2001-12-18
AU2050299A (en) 1999-06-28
CA2312807A1 (fr) 1999-06-17
DE19754108A1 (de) 1999-06-10
WO1999029927A3 (fr) 1999-08-12
WO1999029927A2 (fr) 1999-06-17
KR20010024643A (ko) 2001-03-26
AR010965A1 (es) 2000-07-12

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