WO2006134118A1 - Verfahren zum herstellen von lackierten, flächenförmigen, metallischen formkörpern - Google Patents
Verfahren zum herstellen von lackierten, flächenförmigen, metallischen formkörpern Download PDFInfo
- Publication number
- WO2006134118A1 WO2006134118A1 PCT/EP2006/063170 EP2006063170W WO2006134118A1 WO 2006134118 A1 WO2006134118 A1 WO 2006134118A1 EP 2006063170 W EP2006063170 W EP 2006063170W WO 2006134118 A1 WO2006134118 A1 WO 2006134118A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weight
- acid
- monomers
- copolymer
- metallic
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
-
- 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
- C23C—COATING 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
- C23C22/00—Chemical 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
- C23C22/05—Chemical 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
- C23C22/06—Chemical 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
- C23C22/07—Chemical 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 phosphates
- C23C22/08—Orthophosphates
- C23C22/12—Orthophosphates containing zinc cations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/008—Temporary coatings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- 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
- C23C—COATING 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
- C23C22/00—Chemical 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
- C23C22/05—Chemical 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
- C23C22/06—Chemical 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
- C23C22/48—Chemical 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 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
-
- 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
- C23C—COATING 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
- C23C22/00—Chemical 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
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
Definitions
- the present invention sheet-like moldings, which comprise at least one metallic layer, a conversion layer applied thereto and at least one lacquer layer and a method for producing such shaped body starting from sheet-like, metallic semi-finished products.
- thin-walled metallic moldings from sheet metal such as automotive parts, body panels, equipment panels, cladding, ceiling panels or window profiles are used today as raw material usually long metal strips, which are produced by hot rolling and / or cold rolling of metal blocks and for storing and transporting to roles (so-called To produce the molded parts, the metal strips are cut up and formed into the desired shaped parts by means of suitable techniques such as stamping, drilling, folding, profiling and / or deep-drawing, larger components such as, for example, automobile bodies being joined together by joining several individual parts ,
- the said metallic components must be protected against corrosion as a rule.
- the corrosion protection treatment usually takes place in multi-stage processes, and the surface of treated metallic moldings has several different layers.
- the actual corrosion protection layer is usually applied first.
- Such a layer is also known as a "passivation layer” or “conversion layer”.
- further (paint) layers can be applied to the anticorrosion coatings. It may be a combination of multiple layers of paint, each serving different purposes. They serve, for example, to protect the passivation layer and the metal from corrosive gases and / or liquids but also from mechanical damage, such as rockfall, and of course also aesthetic purposes.
- Coating layers are usually much thicker than corrosion protection layers. Typical thicknesses range from 4 ⁇ m to 400 ⁇ m.
- Anti-corrosive treatment can be performed at various points in the manufacturing process. This can be both temporary corrosion protection as well as permanent corrosion protection. Thus, for example, after producing a molded part, ie on the molded workpiece, a corrosion protection treatment can be carried out, followed by painting of the workpiece.
- a temporary protection is applied, for example, only for storing or transporting a metal strip or other metallic workpiece and removed again before the final processing.
- a temporary coating may also be serve other purposes, such as the improvement of forming properties in further processing, such as deep drawing.
- galvanized surfaces are galvanized surfaces.
- the corrosion protection of zinc is based on the fact that it is less noble than the metallic material itself and therefore first itself corroded.
- the metallic material itself remains intact as long as it is still largely covered with zinc.
- metal strips made of aluminum or aluminum alloys are important. In the presence of atmospheric oxygen, a thin oxide layer forms on the surface of Zn or Zn alloys, Al or Al alloys, which more or less slows down the corrosive attack on the underlying metal, depending on the external conditions.
- the metallic surface is treated with a suitable formulation.
- part of the metal dissolves, and is then immediately re-installed in an oxide film on the metal surface.
- This film is similar to the already existing oxide film, but offers more protection, partly because it is more adhesive and denser than the oxide film. It is commonly referred to as a passivation layer.
- a passivation layer As a rule, it also improves the adhesion of paint layers applied to the metal.
- the term “passivation layer” the term “conversion layer” is therefore often used interchangeably, sometimes also the term "pretreatment layer.”
- a passivation layer applied to strip steel immediately after galvanizing is sometimes also referred to as "aftertreatment layer”.
- Passivation layers are comparatively thin and usually have a thickness of not more than 3 ⁇ m.
- DE-A 195 16 765 discloses a chromium and fluoride-free process for producing conversion coatings on metallic surfaces of Zn or Al.
- the acid solution used for passivation comprises a water-soluble polymer, phosphoric acid and Al chelate complexes.
- DE-A 197 54 108 discloses a chromium-free aqueous corrosion inhibitor which comprises hexafluoro anions of Ti (IV) and / or Zr (IV), vanadium ions, cobalt ions and phosphoric acid.
- a chromium-free aqueous corrosion inhibitor which comprises hexafluoro anions of Ti (IV) and / or Zr (IV), vanadium ions, cobalt ions and phosphoric acid.
- film-forming polymers can be added, including carboxyl-containing copolymers such as acrylic acid / maleic acid copolymers.
- WO 02/31064 discloses a method for coating a metallic strip, which is first coated with a corrosion protection layer and / or with a lacquer-like polymer-containing layer, then cut into strip sections, the coated strip sections are formed and joined and then coated with a lacquer layer.
- the varnish-like layer can also be applied directly to the metal and is comprised of coating with a formulation comprising water, a water-soluble polymer having an acid number of 5 to 200, a finely divided inorganic compound, and a lubricant and / or corrosion inhibitor.
- EP-A 752 453 and EP-A 846 733 disclose the use of polyacids such as homo- or copolymers of double bonds containing carboxylic acids or phosphonic acids in combination with polymers having a glass transition temperature of more than 100 0 C and / or low molecular weight carboxylic acids for corrosion protection. Zende adhesive layers under a paint directly on a sheet surface. A process for the production of painted molded articles from sheet-shaped semi-finished products with a metallic surface is not disclosed.
- WO 2004/74372 discloses a method for forming a passivation layer on a metal surface using copolymers of 50 to 99.9% by weight of (meth) acrylic acid, 0.1 to 50% by weight of acidic comonomers and optionally further comonomers.
- WO 2005/42801 discloses a substantially chromium-free process for passivating metallic surfaces using a polymer comprising at least 50% by weight of (meth) acrylic acid units. The passivia layer is networked.
- both documents do not disclose any processes for producing painted shaped bodies from sheet-like semi-finished products with a metallic surface.
- the object of the invention was to provide an improved, preferably chromium-free process for the production of lacquered, metallic moldings starting from sheet-like semi-finished products with a metallic surface, such as metal sheets or metal strips.
- the process should furthermore preferably be fluoride-free, nickel-free and cobalt-free
- the acidic preparation Z1 comprises at least one water-soluble copolymer X containing at least two different acid group-containing monomers and having at least 0.6 mol of acid groups / 100 g, and wherein the pH of the formulation is not more than 5 and the amount of the polymer is 1 to 40% by weight, based on the amount of all components of the preparation.
- the water-soluble copolymer X is a copolymer X1 which is composed of the following monomeric units, based in each case on the amount of all the monomers copolymerized in the copolymer:
- shaped bodies which comprise at least one metallic layer, a conversion layer applied thereon and at least one lacquer layer, wherein the conversion layer comprises at least one polymer X.
- lacquered, sheet-like shaped bodies which comprise at least one metallic layer. They further comprise a conversion layer and at least one lacquer layer.
- sheet-like is intended to mean that they are shaped bodies whose thickness is considerably smaller than the dimension in the other dimensions.As a rule, the thickness of the shaped bodies is less than 12 mm, preferably less than 6 mm, particularly preferably less 4 mm and, for example, 0.25 to 2 mm, they may be both flat shaped bodies and also non-planar shaped bodies, which may, for example, have curved surfaces, straight or curved edges or corners, or hollow bodies or pipes and profiles.
- the term “thickness” in these cases refers to the wall thickness.
- Such moldings are, in particular, those which can be used for gluing, veneering or lining.
- Examples include automobile bodies or parts thereof, truck bodies, frames for two-wheelers such as motorcycles or bicycles or parts for such vehicles such as fenders or claddings, linings for household appliances such as washing machines, dishwashers, dryers, gas and electric ovens, microwave ovens, freezers or refrigerators, cladding for technical equipment or facilities such as machinery, cabinets, computer cases or the like, architectural elements such as wall parts, facade elements, ceiling elements, window or door profiles or partitions, furniture made of metallic materials such as metal cabinets, metal shelves, parts of furniture or even Forged.
- it may also be hollow body for storage of liquids or other substances, such as cans, cans or tanks.
- At least one flat metallic semifinished product is used.
- the term "semifinished product” is in a manner known in principle for prepared or prepared raw materials for production, which are usually present in larger dimensions these are semi-finished products consisting exclusively of metals. It may be a single-layered material, or a material in which several layers of different metals follow each other. It is preferably flat materials such as metal plates, metal sheets, metal strips or metal foils. It can also be other profiles. Preference is given to metal sheets or metal strips and particularly preferably metal strips.
- the metallic semi-finished products used have a thickness of not more than 10 mm, preferably not more than 5 mm, more preferably not more than 3 mm and for example not more than 2 mm.
- si-finished metal product is also intended to encompass composite materials which have at least one metallic surface and in which at least one metallic layer is bonded to at least one non-metallic layer, for example, a metal foil bonded to a plastic film.
- the metals in particular the metal sheets or tapes, may, for example, be iron or steel, zinc, magnesium, aluminum, tin, copper or alloys of these metals with one another or with other metals.
- the steels can be both low-alloyed and high-alloyed steels.
- They are preferably materials with metallic surfaces of Zn or Zn alloys or Al or Al alloys and tin.
- it may be the surface of galvanized iron or steel.
- it is the surface of a strip metal, in particular strips of electrolytically galvanized or hot-galvanized steel.
- the term "galvanized” or “aluminized” also includes coating with Zn or Al alloys. Suitable alloys for coating metal bands are known to the person skilled in the art. Depending on the desired application, the skilled person will select the type and amount of alloying components. Typical constituents of zinc alloys include, in particular, Al, Mg, Pb, Fe, Mn, Co, Ni, Si, Mg, Sn, Cu or Cd, preferably Al and / or Mg. These may also be Al / Zn alloys in which Al and Zn are present in approximately the same amount.
- the coatings may be substantially homogeneous coatings or even coatings having concentration gradients. For example, it can be galvanized steel, which was additionally vapor-deposited with Mg.
- a surface Zn / Mg alloy can arise.
- Steel coated with the described alloys is commercially available.
- Typical constituents of aluminum alloys include in particular Mg, Mn, Si, Zn, Cr, Zr, Cu or Ti.
- the metallic surfaces to be treated may also have thin oxide / hydroxide and / or carbonatic surface layers or layers of similar structure. Such layers usually form on metallic surfaces in contact with the atmosphere alone, and are included in the term "metallic surface".
- the semi-finished product used as starting material can also be protected against corrosion.
- the semifinished product may be oiled with anticorrosion oils, have a temporary anticorrosive coating or be provided with a peelable protective film.
- protective films are present, they are usually removed before the process is performed. Temporary coatings and / or oils may, if necessary, be removed by means of a purification step (II).
- the metallic semifinished product is processed into shaped bodies.
- the starting material itself can be used or else a semifinished product already coated after at least one of the process steps (IM) and / or (IV).
- process step (I) in principle all techniques can be used by the person skilled in the art with which it is possible to obtain sheetlike shaped bodies of the desired shape from sheet-like, metallic semi-finished products.
- the method step (I) can comprise several substeps.
- process step (I) comprises at least one process step selected from the group of separating (Ia), forming (Ib) and joining (Ic), preferably at least two steps from said group.
- process step (I) comprises at least one process step selected from the group of separating (Ia), forming (Ib) and joining (Ic), preferably at least two steps from said group.
- further sub-steps can be made beyond this.
- the semifinished product used as the starting material ie, for example, the metal strip or the sheet
- It can be both cutting and non-cutting separation techniques.
- the separation can be done for example by punching or cutting by means of suitable tools.
- the cutting can also be done thermally, for example by means of lasers or by means of sharp water jets. Examples of other separation techniques include techniques such as sawing, drilling, milling or filing.
- differently shaped moldings are produced from the semifinished product or the semifinished product already processed by means of (Ia) and / or (Ic) by a sculptural, plastic deformation. It may be a cold or a hot forming. It is preferably a cold forming. It can, for example, act as pressure forming, such as rolling or embossing act Werstedumformen, such as pulling, deep drawing, Kragen Wenn or pressing, Switzerlandumformen such as lengths or widths, Biegeumformen such as bending, round rolling or folding and Schubumformen such as twisting or moving. Details of such forming techniques are known to those skilled in the art. They are also recorded in the form of relevant standards, such as DIN 8580 or DIN 8584, for example. A particularly preferred method for carrying out the present invention is thermoforming.
- process step (I) makes a suitable choice of the possible techniques for carrying out process step (I), depending on the desired shape of the shaped body.
- process step (I) For flat moldings such as cladding panels, it may be sufficient to punch out or cut only the shape of the semi-finished, drill holes for fasteners and possibly smooth edges.
- More complicated molded cladding elements must also be suitably reshaped, for example by bending. Larger elements, such as bodies, can be assembled by joining several individual parts.
- the individual process steps (Ia), (Ib) and (Ic) can also be combined, for example the steps separating and forming. For example, you can punch a molding in a single operation and reshape by deep drawing.
- the inventive method further comprises at least one purification step (II).
- impurities and / or undesirable constituents are removed from the surface of the semifinished product.
- dusts, oils, greases or temporary anticorrosive coatings can be removed from the surface so that they do not disturb further processing steps.
- Cleaning steps may be, for example, a mechanical cleaning, such as brushing the surface.
- the surface can be cleaned by means of suitable liquid media, for example by cleaning in a bath or by spraying. Cleaning with liquid media may be assisted by mechanical means, such as brushing.
- the cleaning may in particular be a degreasing of the surface. This can be achieved by using organic solvents and / or aqueous solutions are made.
- a cleaning step may also be pickling or pickling degreasing. Further details on the method and on pickling particularly suitable formulations are disclosed, for example, in WO 2005/033364.
- the surface can optionally then be rinsed off in one or more rinsing steps. Of course, several cleaning steps can be combined.
- Another embodiment of the cleaning consists in blowing off the surface with compressed air or in the suction.
- a conversion layer is applied to the metallic surface.
- the metallic surface is treated with an acidic, aqueous preparation Z1 which comprises at least one water-soluble, acidic group-comprising copolymer X.
- an acidic, aqueous preparation Z1 which comprises at least one water-soluble, acidic group-comprising copolymer X.
- the chemical nature of the metal surface changes.
- the adhesion of subsequent lacquer layers is improved and improved corrosion protection is achieved.
- the acidic groups are preferably selected from the group of carboxyl groups, sulfonic acid groups, phosphoric or phosphonic acid groups. Particular preference is given to carboxyl groups, phosphoric or phosphonic acid groups.
- the copolymers used X have at least 0.6 mol of acid groups / 100 g of the polymer. This quantity refers to the free acid groups.
- the copolymers preferably have at least 0.9 mol of acid groups / 100 g, more preferably at least 1 mol / 100 g and very particularly preferably at least 1.2 mol / 100 g.
- water-soluble in the context of this invention is intended to mean that the copolymer (s) used should be substantially homogeneously water-soluble.Aqueous dispersions of crosslinked polymer particles of water-insoluble polymers do not belong to the scope of this invention.
- the copolymers containing acid groups should preferably be continuous although it is not absolutely necessary in all cases, but they must be water-soluble to at least such an extent that the conversion layer formation by means of the process according to the invention is possible, as a rule the copolymers used should have a solubility of at least 50 g / l. 1, preferably 100 g / l and more preferably at least 200 g / l.
- solubility of acid group-containing polymers in water can be dependent on the pH.
- the reference point for the solubility should therefore be the purpose desired pH can be selected.
- a polymer which at one pH has insufficient solubility for its intended use may have sufficient solubility at another pH.
- the copolymer X used is a copolymer of at least two different acid group-containing monomers.
- it may be a copolymer of (meth) acrylic acid and other acidic monomers such as maleic acid, itaconic acid and / or vinylphosphonic acid.
- the copolymer may further optionally further comprise other monomers without acidic groups.
- the amount of such monomers should not exceed 30% by weight of the total amount of all monomers copolymerized in the copolymer.
- the Coolymer X is one or more water-soluble copolymers X1 of (meth) acrylic acid units (A), thereof various monoethylenically unsaturated monomers having acidic groups (B) and optionally further monomers (C) as units.
- the monomer (A) for producing the copolymer X1 is (meth) acrylic acid.
- acrylic acid mixtures of acrylic acid and methacrylic acid can be used.
- the amount of (meth) acrylic acid in the copolymer X1 is 40 to 99.9% by weight, preferably 50 to 90% by weight and more preferably 50 to 70% by weight, this figure being based on the sum of all monomers in the polymer ,
- the monomer (B) is at least one monoethylenically unsaturated monomer other than (A) but copolymerizable with (A) which has one or more acidic groups. Of course, several different monomers (B) can be used.
- the acidic groups may be, for example, carboxyl groups, phosphoric acid groups, phosphonic acid groups or sulfonic acid groups, without the invention being restricted to these acid groups.
- Examples of such monomers include crotonic acid, vinylacetic acid, C 1 -C 4 monoesters of monoethylenically unsaturated dicarboxylic acids, styrenesulfonic acid, acrylamidopropanesulfonic acid, vinylsulfonic acid, vinylphosphonic acid, monovinyl phosphonate, maleic acid, fumaric acid or itaconic acid.
- the amount of monomers (B) in the copolymer is from 0.1 to 60% by weight, preferably from 10 to 50% by weight, and more preferably from 30 to 50% by weight, based in each case on the sum of all monomers in the polymer.
- the monomers (B) are monoethylenically unsaturated dicarboxylic acids having 4 to 7 carbon atoms (B1) and / or monoethylenically unsaturated phosphoric and / or phosphonic acids (B2).
- Examples of monomers (B1) include maleic acid, fumaric acid, methyl fumaric acid, methylmaleic acid, dimethylmaleic acid, methylenemalonic acid or itaconic acid. If appropriate, the monomers can also be used in the form of the corresponding cyclic anhydrides. Preference is given to maleic acid, fumaric acid and itaconic acid, particularly preferably maleic acid or maleic anhydride.
- Examples of monomers (B2) include vinylphosphonic acid, phosphoric acid monovinyl ester, allylphosphonic acid, phosphoric acid monoallylester, 3-butenylphosphonic acid, mono (3-butenyl) phosphoric acid, (4-vinyloxybutyl) phosphoric acid, phosphonoxyethyl acrylate, methacrylic acid (phosphonoxyethyl) ester, mono (- 2-hydroxy-3-vinyloxypropyl) phosphoric acid, phosphoric mono (1-phosphonomoxymethyl-2-vinyloxy-ethyl) ester, phosphoric mono (3-allyloxy-2-hydroxypropyl) ester, mono-2- (allylox-1-phosphonoxymethyl-ethyl) phosphoric acid, 2-hydroxy-4-vinyloxymethyl-1,3,2-dioxaphosphole, 2-hydroxy-4-allyloxymethyl-1,3,2-dioxaphosphole. Vinyl phosphonic acid, monovinyl phosphoric acid ester or allyl
- optionally 0 to 30% by weight of at least one further ethylenically unsaturated monomer (C) other than (A) and (B) can be used. In addition, no other monomers are used.
- the monomers (C) are used for fine control of the properties of the copolymer X1.
- monomers (C) can be used. They are selected by the skilled person depending on the desired properties of the copolymer and further with the proviso that they must be copolymerizable with the monomers (A) and (B).
- the monomers (C) -as in (A) and (B) - are monoethylenically unsaturated monomers.
- small amounts of monomers with several polymerizable groups can be used.
- the copolymer can be crosslinked to a small extent.
- Suitable monomers (C) include in particular alkyl esters or hydroxyalkyl esters of (meth) acrylic acid, such as methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, hydroxyethyl (meth ) acrylate, hydroxypropyl (meth) acrylate or butanediol-1,4-monoacrylate.
- alkyl esters or hydroxyalkyl esters of (meth) acrylic acid such as methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, hydroxyethyl (meth ) acrylate, hydroxypropyl (meth) acrylate or butanediol-1,4-monoacrylate.
- vinyl or Allyl ethers such as methyl vinyl ether, ethyl vinyl ether, propyl vinyl ether, 2-ethylhexyl vinyl ether, vinylcyclohexyl ether, vinyl 4-hydroxybutyl ether, decyl vinyl ether, 2- (diethylamino) ethyl vinyl ether, 2- (di-n-butyl-amino) ethyl vinyl ether or methyl diglycol vinyl ether or the corresponding allyl compounds.
- vinyl esters such as vinyl acetate or vinyl propionate can be used.
- basic comonomers for example acrylamide and alkyl-substituted acrylamides.
- alkoxylated monomers in particular ethoxylated monomers.
- alkoxylated monomers which are derived from acrylic acid or methacrylic acid.
- crosslinking monomers include molecules having a plurality of ethylenically unsaturated groups, for example di (meth) acrylates such as ethylene glycol di (meth) acrylate or butanediol-1,4-di (meth) acrylate or poly (meth) acrylates such as trimethylolpropane tri (meth) acrylate or di (meth) acrylates of oligo- or polyalkylene glycols such as di-, tri- or tetraethylene glycol di (meth) acrylate.
- di (meth) acrylates such as ethylene glycol di (meth) acrylate or butanediol-1,4-di (meth) acrylate
- poly (meth) acrylates such as trimethylolpropane tri (meth) acrylate or di (meth) acrylates of oligo- or polyalkylene glycols such as di-, tri- or tetraethylene glycol di (me
- the amount of all monomers (C) used together is 0 to 30% by weight, based on the total amount of monomers used. Preferably, the amount is 0 to 20 wt.%, Particularly preferably 0 to 10%. If crosslinking monomers (C) are present, their amount should generally not exceed 5%, preferably 2% by weight, based on the total amount of all monomers used for the process. It may be, for example, 10 ppm to 1 wt.%.
- the copolymer X1 comprises, in addition to (A), at least one monomer (B1) and at least one monomer (B2). With particular preference, in addition to the monomers (A), (B 1) and (B2), no further monomers (C) are present.
- copolymers X1 of monomers (A), (B1) and (B2) wherein the amount (A) is 50 to 90% by weight, the amount of (B1) 5 to 45% by weight, the amount (B2) is 5 to 45% by weight and the amount of (C) is 0 to 20% by weight.
- (B 1) and (B2) may be only one monomer (B 1) or (B2), or in each case by two or more different monomers (B1) or (B2).
- the amount of (A) is 50 to 80% by weight, the amount of (B1) 12 to 42% by weight, the amount of (B2) 8 to 38% by weight, and the amount of (C) 0 to 10 Weight%. Most preferably, the amount of (A) is 50 to 70% by weight, the amount of (B1) 15 to 35% by weight, the amount of (B2) 15 to 35% by weight and the amount of (C) 0 to 5% by weight.
- the components (A), (B) and optionally (C) can be polymerized together in a manner known in principle. Corresponding polymerization techniques are known to the person skilled in the art.
- the copolymers are preferably prepared by free-radical polymerization of the stated components (A), (B) and optionally (C) in aqueous solution. In addition, small amounts of water-miscible organic solvents may still be present and optionally small amounts of emulsifiers. Details for carrying out a radical polymerization are known to the person skilled in the art.
- the acidic monomers can be used in each case the free acids.
- the preparation of the polymers can also be carried out by using in the case of the acidic monomers for the polymerization not the free acids, but in the form of their esters, anhydrides or other hydrolyzable derivatives. These may hydrolyze in the course of or after the polymerization in aqueous solution to the corresponding acid groups.
- maleic acid or other cis-dicarboxylic acids can be used advantageously as cyclic anhydrides. As a rule, these hydrolyze very rapidly to the corresponding dicarboxylic acids in aqueous solution.
- Other acidic monomers, in particular the monomers (A) and (B2), are preferably used as free acids.
- the polymerization can also be carried out in the presence of at least one base.
- monomers (B1) such as, for example, maleic acid into the polymer
- the incorporation of monomers (B1), such as, for example, maleic acid into the polymer can be improved, so that the proportion of unpolymerized dicarboxylic acids is kept low.
- Suitable bases for neutralizing are in particular ammonia, amines, amino alcohols or alkali metal hydroxides. Of course, mixtures of different bases can be used.
- Preferred amines are alkylamines having up to 24 carbon atoms and amino alcohols having up to 24 carbon atoms and structural units of the type -N-C2H4-O- and -N-C2H4-OH and -N-C2H4-O-CH3. Examples of such amino alcohols include ethanolamine, diethanolamine, triethanolamine and their methylated derivatives.
- the bases can be added before or during the polymerization. Of course, it is also possible to polymerize without bases and optionally add base after the polymerization.
- the pH of the polymer can be optimally adjusted.
- the degree of neutralization should by no means be too high, but sufficient free acid groups should still be present in the polymer.
- free acid groups By free acid groups a particularly good adhesion of the polymers is achieved on the metallic surface.
- not more than 40 mol% of the acid groups present in polymer X or copolymer X1 should be neutralized, preferably 0 to 30 mol%, particularly preferably 0 to 20 mol% and very particularly preferably 0 to 12 mol% and for example 2 to 10 mol%.
- the free-radical polymerization is preferably started by the use of suitable thermally activatable polymerization initiators.
- Lymerisationsinitiatoren are thermally activatable initiators Po having a decomposition temperature in the range of 30 to 150 0 C, in particular from 50 to 120 0 C, preferably. As usual, this temperature value refers to the 10h half-life.
- the person skilled in the art makes a suitable choice among the principally suitable initiators.
- the free radical initiators should be sufficiently soluble in the solvent of the reaction. If only water is used as a solvent, then the initiators should have sufficient water solubility. If working in organic solvents or mixtures of water and organic solvents, and organic soluble initiators can be used. Preference is given to using water-soluble initiators.
- Suitable initiators include inorganic peroxo compounds, such as peroxodisulfates, in particular ammonium, potassium and preferably sodium peroxodisulfate, peroxosulfates, hydroperoxides, percarbonates and hydrogen peroxide and the so-called redox initiators.
- inorganic peroxo compounds such as peroxodisulfates, in particular ammonium, potassium and preferably sodium peroxodisulfate, peroxosulfates, hydroperoxides, percarbonates and hydrogen peroxide and the so-called redox initiators.
- mixtures of different initiators for example mixtures of hydrogen peroxide and sodium or potassium peroxodisulfate. Mixtures of hydrogen peroxide and sodium peroxodisulfate can be used in any proportion.
- organic peroxo compounds such as diacetyl peroxide, di-tert-butyl peroxide, diamyl peroxide, dioctanoyl peroxide, didecanoyl peroxide, dilauroyl peroxide, dibenzoyl peroxide, bis (o-toloyl) peroxide, succinyl peroxide, tert-butyl peracetate, tert-butylpermaleinate, tert-butyl perisobutyrate tert-butyl perpivalate, tert-butyl peroctoate, tert-butyl perodecanoate, tert-butyl perbenzoate, tert-butyl peroxide, tert-butyl hydroperoxide (water-soluble), cumene hydroperoxide, tert-butyl peroxy-2-ethylhexanoate and Diisopropylperoxidicarbamat be used
- Preferred initiators are also azo compounds.
- suitable water-soluble azo compounds include 2,2'-azobis [2- (5-methyl-2-imidazolin-2-yl) propane] dihydrochloride, 2.2 1 azobis [2- (2-imidazolin-2-yl) propanediol dihydrate, 2,2'-azobis [N- (2-carboxyethyl) -2-methylpropionamidine] tetrahydrate, 2,2'-azobis ⁇ 2- [1- (2-hydroxyethyl) -2-imidazolin-2-yl] propane ⁇ dihydrochloride, 2.2 l azobis ⁇ 2-methyl-N- [1,1-bis (hydroxymethyl) -2-hydroxyethyl] propionamide, 2,2'-azobis [2-methyl-N- (2- hydroxyethyl) propionamide], 2,2'-azobis [2- (2-imidazolin-2-yl) propane] dihydrochloride, 2,2'-azobis (2-methylpro
- soluble in organic solvents azo compounds examples include 2,2 1 -azobis (4-methoxy-2,4-dimethyl valeronitrile), dimethyl 2,2'-azobis (2-methylpropio- nat) 1.r-Azobisfcyclohexane-i- carbonitrile), 1 - [(cyano-1-methylethyl) azo] formamide, 2,2'-azobis (N-cyclohexyl-2-methylpropionamide), 2,2'-azobis (2,4-dimethyl valeronitrile), 2, 2 1 azobis (2-methylbutyronitrile), 2.2 1 azobis [N- (2-propenyl) -2-methylpropionamide], 2,2'-azobis (N-butyl-2-methylpropionamide).
- Redox initiators comprise as oxidizing component at least one of the abovementioned peroxo compounds and as reducing component, for example, ascorbic acid, glucose, sorbose, ammonium or alkali metal hydrogen sulfite, sulfite, thiosulfate, hyposulfite, pyrosulfite, sulfide or sodium hydroxymethylsulfoxylate.
- reducing component of the redox catalyst it is preferred to use ascorbic acid or sodium pyrosulphite. Based on the amount of monomers used in the polymerization, for example, 1 ⁇ 10 5 to 1 mol% of the reducing component of the redox catalyst is used.
- transition metal catalysts may additionally be used, e.g. Salts of iron, cobalt, nickel, copper, vanadium and manganese. Suitable salts are e.g. Iron (II) sulfate, cobalt (II) chloride, nickel (II) sulfate, copper (I) chloride.
- the reducing transition metal salt is usually used in an amount of 0.1 to 1000 ppm, based on the sum of the monomers. For example, combinations of hydrogen peroxide and iron (II) salts, such as a combination of 0.5 to
- the amount is determined by the skilled person depending on the desired copolymer. As a rule, 0.05% by weight to 30% by weight, preferably 0.1 to 15% by weight, and particularly preferably 0.2 to 8 wt.% Of the initiator with respect to the total amount of all monomers used.
- suitable regulators such as, for example, mercaptoethanol
- mercaptoethanol can also be used in a manner known in principle.
- no controllers are used.
- thermal initiators are used, with water-soluble azo compounds and water-soluble peroxo compounds being preferred.
- water-soluble azo compounds and water-soluble peroxo compounds are preferred.
- Very particular preference is given to hydrogen peroxide and sodium peroxodisulfate or mixtures thereof, if appropriate in conjunction with 0.1 to 500 ppm of FeSO 4 ⁇ 7 H 2 O.
- the polymerization may be initiated by suitable radiation, for example.
- suitable photoinitiators include acetophenone, benzoin ethers, benzyl dialkyl ketones and their derivatives.
- the radical polymerization is preferably carried out at a temperature of less than 130 0 C.
- the temperature may be varied within a wide range by those skilled in the art depending on the type of monomers used, the initiator and the desired properties of the copolymer X1.
- a minimum temperature of about 60 ° C. has proven useful.
- the temperature can be kept constant during the polymerization or temperature profiles can also be run.
- the polymerization temperature is 75 to 125 ° C, particularly preferably 80 to 120 0 C, most preferably 90 to 110 0 C and for example 95 to 105 0 C.
- the polymerization can be carried out in conventional free-radical polymerization apparatus. If one works above the boiling point of the water or the mixture of water and other solvents, working in a suitable pressure vessel, otherwise it can be operated without pressure.
- the synthesized copolymers X1 can be isolated from the aqueous solution by conventional methods known to those skilled in the art, for example by evaporation of the solution, spray drying, freeze drying or precipitation.
- the copolymers X1 are preferably not isolated at all from the aqueous solution after the polymerization, but the solutions of the copolymer solutions obtained are used as such for the process according to the invention.
- an acidic, aqueous preparation Z1 of the copolymers X is used. This can of course also be a mixture of several different copolymers X. It is preferably copolymers X1.
- the molecular weight M w (weight average) of the copolymers X used for the process according to the invention is determined by the person skilled in the art according to the desired application. For example, polymers having a molecular weight M w of 3000 to 1 000 000 g / mol can be used.
- the preparation Z1 preferably comprises only water. It may also comprise water-miscible organic solvents. Examples include monoalcohols such as methanol, ethanol or propanol, higher alcohols such as ethylene glycol or polyether polyols and ether alcohols such as butyl glycol or methoxypropanol. As a rule, however, the amount of water is at least 80% by weight, preferably at least 90% by weight and very particularly preferably at least 95% by weight. The data refer to the total amount of all solvents.
- the polymer-containing solutions resulting from the polymerization can be used directly, and at most have to be further diluted.
- the amount of aqueous solvent used for the polymerization should be designed from the beginning so that the concentration of the polymer in the solvent is suitable for the application.
- the concentration of the copolymers X or X1 in the preparation Z1 is from 1 to 40% by weight, based on the amount of all components of the formulation.
- the amount is preferably 2 to 35% by weight and more preferably 5 to 25% by weight.
- the concentration and the nature of the polymers used can influence the properties of the preparation, for example its viscosity or its pH.
- the properties of the preparation can thus be optimally adapted to a specific process technology for treatment.
- a concentration of 5 to 15% by weight has proven successful, when applied by means of paint rollers a concentration of 15 to 25% by weight.
- the concentrations given refer to the ready-to-use preparation. It is also possible first to prepare a concentrate which is first diluted to the desired concentration with water or optionally other solvent mixtures on site.
- the preparation Z1 used according to the invention has a pH of not more than 5, in particular a pH of 0.5 to 5, preferably 1.5 to 3.5.
- the pH of the preparation can be controlled, for example, by the type and concentration of the polymers used according to the invention. Naturally, the degree of neutralization of the polymer plays a decisive role here.
- the preparation Z1 may furthermore optionally comprise further components.
- optional components are in particular inorganic or organic acids or their mixtures mentioned.
- the choice of such acid is not limited, provided that there are no adverse effects together with the other components of the formulation. The skilled person makes a corresponding selection.
- acids examples include phosphoric acid, phosphonic acid or organic phosphonic acids such as 1-hydroxyethane-1, 1-diphosphonic acid (HEDP), 2-phosphonobutane-1, 2,4-tricarboxylic acid (PBTC), aminotri (methylenephosphonic acid) (ATMP), ethylenediamine tetra (methylenephosphonic acid) (EDTMP) or Diethylentriaminpenta (methylenephosphonic acid) (DTPMP), sulfonic acids such as methanesulfonic acid, amidosulfonic acid, p-toluenesulfonic acid, m-nitrobenzenesulfonic acid and derivatives thereof, nitric acid, formic acid or acetic acid.
- HEDP 1-diphosphonic acid
- PBTC 2,4-tricarboxylic acid
- ATMP aminotri
- ETMP ethylenediamine tetra
- DTPMP Diethylentriaminpenta
- Phosphorus-containing acids such as H 3 PO 4
- phosphonic acid are preferably the organic phosphonic acids mentioned and / or HNO 3, and H 3 PO 4 is particularly preferred.
- the formulation contains, if any additional acid is present, exclusively H 3 PO 4 as the acid.
- the optionally present components may furthermore be soluble metal ions and compounds, for example Al, Mg, Ca, Ni, Co, V, Fe, Zn, Zr, Mn, Mo, W, Ti, Zr.
- the compounds can be used for example in the form of the respective aqua complexes.
- ligands such as fluoride complexes of Ti (IV), Zr (IV) or oxometallates such as MoO 4 2 " or WO 4 2" or the compounds may also be in the form of complexes with typical chelating ligands such as ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), hydroxyethylethylenediaminetriacetic acid (HEDTA), nitrilotriacetic acid (NTA) or methylglycinediacetic acid (MGDA).
- EDTA ethylenediaminetetraacetic acid
- DTPA diethylenetriaminepentaacetic acid
- HEDTA hydroxyethylethylenediaminetriacetic acid
- NTA nitrilotriacetic acid
- MGDA methylglycinediacetic acid
- complex bonds can be present with the carboxyl groups of the copolymer X1. It is preferably a fluoride-
- the process according to the invention is a substantially chromium-free process.
- the amount should not exceed 2% by weight, preferably 1% by weight and more preferably 0.5% by weight of chromium, based on the copolymers X.
- preference should be given to using Cr (III) compounds.
- the Cr (VI) content should be in each Trap be kept so low that the Cr (VI) content on the passivated metal does not exceed 1 mg / m 2 .
- chromium-free i. the preparation used contains no Cr compounds.
- the term "chromium-free” does not exclude that indirect and intrinsically unintentional small amounts of chromium are introduced into the process, namely if metallic semifinished products comprising chromium as an alloy constituent, for example Cr-containing steel, are processed by the process according to the invention It is always within the realm of the possible that small amounts of chromium in the metal to be treated can be dissolved by the preparation used for the process and, accordingly, can inadvertently get into the preparation itself " be considered.
- the preparation Z1 used according to the invention preferably comprises a soluble metal ion selected from the group of Zn 2+ , Mg 2+ , Ca 2+ or Al 3+ . It is preferably a soluble metal ion selected from the group of Zn 2+ , Mg 2+ and Ca 2+ . Particularly preferably it is Zn 2+ or Mg 2+ and most preferably Zn 2+ .
- the preparation next to it preferably does not comprise any further metal ions.
- the amount of metal ions from the group of Zn 2+ , Mg 2+ , Ca 2+ or Al 3+ , if present, is generally 0.01% by weight to 25% by weight, preferably 0.5 to 20% by weight. %, particularly preferably 1 to 15 wt.%, and very particularly preferably 3 to 12 wt.%, in each case based on the total amount of all copolymers X in the formulation.
- the preparation Z1 further comprises at least one dissolved phosphate ion.
- phosphate ion can be all types of phosphate ions.
- it may be of the orthophosphates or diphosphates. It is clear to the person skilled in the art that in aqueous solution, depending on the pH value and the concentration, there may be an equilibrium between the different dissociation stages of the phosphate ions.
- metal ions in particular Zn 2+ , Mg 2+ , Ca 2+ or Al 3+ and
- Phosphate ions may preferably be used in the form of formulation soluble salts containing both ions.
- examples of such compounds include Zn 3 (PC "4) 2, Zn ⁇ PO 4 , Mg 3 (PO 4 ) 2 or Ca (H 2 PO 4 ) 2 or corresponding hydrates thereof.
- the ions can also be added separately to one another.
- the metal ions can be used in the form of the corresponding nitrates
- the phosphates can be used in the form of phosphoric acid. It is also possible borrow, insoluble or sparingly soluble compounds, such as the corresponding carbonates, oxides, oxide hydrates or hydroxides used, which are dissolved under the influence of acid.
- the amount of phosphate ion in the formulation will be determined by those skilled in the art according to the desired properties of the formulation. It is generally 0.01% by weight to 25% by weight, preferably 0.5 to 25% by weight, particularly preferably 1 to 25% by weight and very particularly preferably 5 to 25% by weight, in each case calculated as orthophosphoric acid and in each case based on the copolymers X.
- the preparation Z1 may further contain at least one wax dispersed in the formulation.
- at least one wax dispersed in the formulation can be used.
- waxes By the addition of waxes, the friction of the surface with the surface of the tools used for forming can be advantageously reduced.
- wax here includes both the actual wax and any auxiliary agents which may be used to form a wax dispersion
- auxiliary agents which may be used to form a wax dispersion
- polyethylene waxes based on fluorinated polyethylene such as PTFE or other polymers based on C, H and F.
- polyethylene is also intended to mean copolymers of ethylene and other monomers, especially other olefins such as propylene include.
- such ethylene copolymers comprise at least 65% by weight of ethylene.
- waxes for practicing the present invention include [CAS numbers in square brackets]:
- Copolymers of polyethylene waxes for example copolymers of ethylene with acrylic acid, methacrylic acid, maleic anhydride, vinyl acetate, vinyl alcohol, for example [38531-18-9], [104912-80-3], [219843-86-4] or copolymers of
- Oxidized waxes for example oxidized polyethylene wax according to [68441-17-8]
- Polar modified polypropylene waxes for example [25722-45-6]
- Microcrystalline waxes for example microcrystalline paraffin waxes [63231-60-7]
- montan acids for example [68476-03-9]
- metal salts of montan acids for example sodium salts [93334-05-5]
- Esters of long-chain carboxylic acids with long-chain alcohols such as octadecyl stearate [2778-96-3]
- Montanic acid esters of polyhydric alcohols for example o montan wax glycerides [68476-38-0], also partially hydrolyzed o montanic acid esters of trimethylolpropane [73138-48-4], also partially hydrolyzed o montanic acid esters of 1,3-butanediol [73138-44-0], also partially saponified o montanic acid ester of ethylene glycol [73138-45-1], also partially saponified • montan wax ethoxylates, for example [68476-04-0]
- Fatty acid amides for example erucamide [112-84-5], oleamide [301-02-0] and 1,2-ethylene bis (stearamide) [110-30-5]
- mixtures of waxes are suitable, for example
- the waxes may also have acidic functions, in particular carboxylic acid groups, which may be neutralized or unneutralized. Waxes with an acid number ⁇ 200 mg KOH / g are preferred. Particularly preferred is an acid number of 3 to 80 mg KOH / g.
- waxes are preferred which have a melting point.
- the melting point is 40 to 200 0 C, preferably 60 to 170 0 C, particularly preferably 100 to 160 0 C.
- Preferred waxes are oligomeric or polymeric substances which have a molecular weight M n greater than 200 g / mol, preferably greater than 400 g / mol, and which have a weight fraction of more than 60% by weight of structural elements selected from the group of
- R is H and / or F, and provided that said structural elements are joined together to predominantly comprise units of at least 12 directly linked carbon atoms.
- Waxes having such structural units may in particular be polyethylene and / or polypropylene waxes or derivatives thereof.
- Such waxes generally have an average molecular weight M n of from 400 to 30 000 g / mol, preferably from 1000 to 25 000 g / mol and more preferably from 1500 to 20 000 g / mol.
- the waxes contain, in addition to the main monomers ethylene or propylene, optionally further comonomers as minor constituents. Further comonomers may be, for example, other ⁇ -olefins, vinyl acetate or monomers with acidic groups. Examples of monomers having acidic groups include acrylic acid, methacrylic acid, vinylphosphonic acid, maleic acid or maleic anhydride or vinylacetic acid.
- Acidic monomers are preferably acrylic acid and / or methacrylic acid. Suitable examples are ethylene (meth) acrylic acid waxes having an ethylene content of 75 to 99 wt.%, 1 to 25 wt.% Of (meth) acrylic acid and optionally 0 to 10 wt.% Of other monomers. This may be, in particular, vinylphosphonic acid and / or vinylphosphonic acid esters.
- Examples of derivatives of waxes include oxidized polyolefin waxes, especially oxidized polyethylene waxes.
- Oxidized polyethylene waxes have various oxygen-containing groups on the polyethylene skeleton, such as OH groups, keto groups and especially COOH groups.
- Particularly preferred waxes are those which, owing to their delivery state, can be incorporated particularly easily into the formulation for the process according to the invention, for example micronized waxes and / or wax dispersions.
- Micronized waxes are particularly finely divided powders having an average particle size of preferably less than 20 .mu.m, particularly preferably from 2 to 15 .mu.m.
- Wax dispersions are aqueous preparations of waxes which contain water, optionally further water-miscible solvents, spherical wax particles and, as a rule, auxiliaries.
- Preferred wax dispersions for use in the present invention have a particle size below 1 ⁇ m, preferably 20 to 500 nm, more preferably 50 to 200 nm.
- Micronized waxes and finished wax dispersion are commercially available.
- auxiliaries are used in wax dispersions, for example, to ensure the dispersibility of the wax and its storage stability.
- the auxiliaries may be, for example, bases for the neutralization or partial neutralization of acid functions in the wax, for example alkali metal hydroxides, ammonia, amines or alkanolamines. Acid groups can also be neutralized or partially neutralized with cations, for example Ca ++ or Zn ++ .
- they may be surface-active substances, preferably nonionic surfactants or anionic surfactants.
- nonionic surfactants include ethoxylates and propoxylates based on alcohols and hydroxyaromatics and their sulfation and sulfonation products.
- anionic surfactants include alkylsulfonates, arylsulfonates and alkylarylsulfonates.
- wax dispersions having a pH of less than 7, preferably having a pH of less than 6.
- the amount of optionally used waxes is determined by the skilled person depending on the desired properties of the passivation layer. As a rule, an amount of from 0.01 to 40% by weight, preferably from 0.5 to 40% by weight, more preferably from 0.5 to 20% by weight and very particularly preferably from 0.5 to 10% by weight, has proven useful, in each case based on the X based on the acid group-containing copolymer.
- preparation Z1 includes surface-active compounds, corrosion inhibitors, complexing agents, typical electroplating aids or also other polymers to be distinguished from the polymers X used according to the invention.
- Other possible additives are conventional paint additives, as described in H. Kittel (Ed.) Textbook of Paints and Coatings, Volume 5 - Pigments, Fillers and Colorimetry -2. Aufl. S. Hirzel-Verlag, Stuttgart 2003, are described.
- the person skilled in the art will make an appropriate selection of the possible optional components as well as their quantities depending on the desired application.
- the amount of optional components should, however, as a rule not exceed 20% by weight, preferably not more than 10% by weight and more preferably not more than 5% by weight, based on the copolymers X.
- the preparations Z1 used according to the invention for the process can be obtained by simply mixing the components. If waxes are used, they are preferably first dispersed separately in water and used as dispersants. mixed with the other components. Such wax dispersions are also commercially available.
- the metallic surface is treated with the preparation Z1 by bringing the surface into contact with the preparation, for example by immersion.
- the acidic copolymers X used and also other components of the preparation Z1 are chemisorbed by the surface of the metal and / or react with the surface, so that a firm bond between the surface and the components is achieved.
- part of the metal to be protected dissolves during the treatment and is at least partially incorporated into a film on the metal surface.
- the exact structure and composition of the conversion layer or passivation layer is not known to us. However, in addition to the at least one metallic cation which has been dissolved out of the surface, it also comprises at least the polymer X and possibly also compounds of the metal and other components of the formulation.
- the composition of the conversion layer does not have to be homogeneous, but the components may have a concentration gradient.
- the amount of polymer X incorporated in the conversion layer is, as a rule, at least 20% by weight, preferably at least 30% by weight, based on the sum of all components of the conversion layer.
- process technology for carrying out process step (IM)
- process step (IM) there are a number of possibilities. These depend, inter alia, on the shape of the workpiece, for example, whether an unformed, flat semi-finished product, such as a metal strip or a metal sheet is used, or whether a molded body is used which has curved surfaces or edges.
- the treatment may also comprise several, individual process steps. It may be continuous or discontinuous. The person skilled in the art makes a suitable choice among the possible methods.
- the treatment can be carried out, for example, by dipping in the formulation or by spraying or brushing with the formulation. On flat moldings, the formulation can also be rolled up.
- the treatment may also be a so-called "no-rinse” process, in which the treatment solution is dried directly in a drying oven immediately after application without rinsing.
- the treatment can be done at room temperature or at elevated temperatures.
- the treatment is carried out at 20 to 100 0 C, preferably 25 to 80 0 C and particularly preferably 30 to 60 0 C.
- a bath with the preparation are heated, but an elevated temperature can also be adjusted automatically by warm metal dips a bath.
- the treatment of the metal surface with the preparation can be carried out batchwise or preferably continuously.
- a continuous process is particularly suitable for treating strip metals.
- the metal strip is driven by a jug or a spraying device with the preparation.
- Metal strips can furthermore be coated particularly advantageously by rolling the preparation.
- the coating agent is usually taken up with a pickup roller from a trough and then transferred to an applicator roll.
- the applicator roll transfers the coating agent to the belt.
- Pick roller and applicator roll may be coupled via an intermediate roller over which the coating agent is transferred.
- the rollers can rotate in the same or opposite directions and run with or against the belt direction.
- the coating result can also be determined by choosing the nip pressure of the roller on the belt and the roughness and hardness of the roller.
- the duration of treatment is determined by the person skilled in the art according to the desired properties of the layer, the composition used for the treatment and the technical conditions. It can be significantly less than a second or several minutes. In the continuous process, it has proven particularly useful to contact the surface with the preparation for a period of 1 to 60 seconds.
- the solvent used ie usually the water is removed.
- the removal can be carried out at room temperature by simple evaporation in air at room temperature.
- the removal of the solvent can also be assisted by suitable auxiliaries, for example by heating and / or by passing gas streams, in particular air streams.
- the evaporation of the solvent can be supported, for example by IR emitters, or also, for example, by drying in a drying tunnel. For drying, a temperature of 30 ° C. to 210 ° C., preferably 40 ° C. to 120 ° C., and more preferably 40 ° C. to 80 ° C. has proven useful.
- peak temperature peak metal temperature (PMT) found on the metal)
- PMT peak metal temperature
- the conversion layer can also be additionally crosslinked.
- the preparation can be mixed with a crosslinker.
- Suitable crosslinkers should be water-soluble or at least soluble in the said aqueous solvent mixture.
- suitable crosslinkers include, in particular, those which have at least 2 crosslinking groups selected from the group of aziran, oxirane or thiirane groups. Further details of suitable crosslinkers and their application are disclosed in WO 05/042801 p.11, line 34 to page 14, line 39.
- Crosslinking may also be carried out by adding to the formulation compounds containing more than one OH group and / or NH 2 group, such as alkanolamines, polyhydric alcohols, di-, oligo- and polyamines. These can crosslink with appropriate choice of the drying temperature.
- the formulation preferably does not comprise any crosslinking components, in particular no readily crosslinkable components such as epoxides, urethanes, aziridines or silanes.
- the thickness of the conversion layer is adjusted by the person skilled in the art according to the desired properties of the layer.
- the thickness is 0.01 to 3 m, preferably 0.1 to 2.5 m, and more preferably 0.2 to 1, 5 m.
- the thickness can be influenced by the person skilled in the art, for example, on the type of acidic aqueous preparation used, for example its viscosity and the exposure time. Furthermore, it can be influenced by process parameters, for example by removing too much applied treatment solution.
- At least one lacquer layer is applied to the surface provided with the conversion layer.
- This can also be a plurality of layers of lacquer to be applied successively, the individual lacquer layers usually serving different functions. For example, it can be coloring and / or effect paint layers.
- lacquers are not limited in principle, provided that there are no negative properties. These may be, for example, physically, thermally or radiation-curable paints, liquid paints or powder coatings, water-based paints or solvent-based systems. Paint systems and their respective preferred application are known in principle to the person skilled in the art. The skilled person makes a suitable choice.
- the application of the lacquers can be carried out by techniques known to those skilled in the art, for example by spraying, dipping or rolling.
- the first coat of paint is a basecoat or primer.
- Basecoats serve u.a. to improve the adhesion of further, applied paint layers. They also serve to protect against corrosion by better shielding the metal surface from the influence of corrosive media.
- water-based basecoats may preferably be used. Typical basecoats are disclosed, for example, in EP-A 299 148 or EP-A 401 565.
- the base coat can also be applied using an electrocoating.
- the electrodeposition coating has proved particularly suitable for the production of automobile bodies.
- electrodeposition painting the metallic molding to be coated is immersed in a paint diluted with water.
- an electrical DC voltage between the molding and the counter electrode which also dips into the paint, colloidal paint particles are deposited on the surface of the molding.
- it may be a cathodic dip coating, in which the shaped body is poled as a cathode.
- binders of the paint formulations it is possible to use polymers having ammonium groups in a manner known in principle. These can be easily obtained by reacting amino-containing polymers with acids, for example carboxylic acids.
- a slightly acidic electrodeposition paint is used, for example with a pH value of 5 to 7.
- a slightly acidic electrodeposition paint is used, for example with a pH value of 5 to 7.
- Further details for carrying out an electrocoating are described, for example, in DE-A 198 04 291 and Römpp-Lexikon "Paints and printing inks", Georg Thieme Verlag, Stuttgart, New York 1998, p. 188 / 189 discloses.
- topcoat layers can be applied to the basecoat. These may be, for example, colored lacquers and / or clearcoats and / or other functional lacquers.
- An example of a functional paint is a soft paint with a relatively high proportion of filler. This can be advantageously applied to the primer before the color and / or topcoat to protect the metal and the conversion layer from mechanical damage, for example by stone chipping or scratching.
- powder coatings can also be used for painting powder coatings. These can be applied as single-coat paints directly to the conversion coating, but they can also be combined with electrodeposition paints and / or liquid paints.
- powder coatings with binders based on epoxy resins, polyesters, isocyanates or acrylates can be used. Further details on the performance of powder coatings are disclosed, for example, in DE-A 196 32 426 or Rompp-Lexikon "Paints and printing inks", Georg Thieme Verlag, Stuttgart, New York 1998, p 477-480.
- the conversion layer obtained according to the invention by means of the acidic aqueous preparation Z1 can also serve as an integrated pretreatment layer, i. Without applying a base coat, they should be painted directly with topcoats.
- the high amount of non-neutralized COOH groups advantageously ensures good adhesion of subsequent lacquer layers, in particular for aqueous basecoats.
- the process according to the invention can be carried out in the order (I), (II), (III), (IV), i.
- a molded body is first prepared, which is cleaned in further steps, provided with a conversion layer and then painted. Such a procedure has proven itself, for example, for automobile bodies.
- the method can also be carried out in the order (II), (IM), (IV), (I), ie the metallic semi-finished product is first cleaned, provided with a conversion layer and painted, and only then to a shaped body processed.
- the metallic semi-finished product is first cleaned, provided with a conversion layer and painted, and only then to a shaped body processed.
- Such an approach has proven, for example, in the manufacture of panels for the architectural and equipment sector starting from metal strips. Here metal strips are cleaned and coated in a continuous process, the so-called “coil coating process", and only then are shaped articles produced.
- other orders are possible, for example, (II), (IM), (I), (IV).
- the application can take place in several substeps; for example, in order (II), (IM), (IV), (I), (IV) by first applying one or more lacquer layers, such as basecoats, then forming and finally one or more further lacquer layers, such as topcoat layers applies.
- lacquer layers such as basecoats
- further lacquer layers such as topcoat layers
- a cleaning step (M) can also be carried out several times in the course of the process. For example, the surface between steps (II) and (IV) or between the application of individual lacquer layer in step (IV) in each case intermediate flush or preferably blow off with compressed air.
- the process according to the invention may additionally optionally comprise further process steps which may be combined with (I) to (IV) in a suitable manner.
- At least one post-treatment step (V) may be carried out.
- This may be, for example, the polishing of the surface of the molded article, or the surface may be provided with a peelable protective film for protection against damage, for example during transport.
- a protective film can be laminated, for example.
- the metallic semifinished product used in a method step (0) preceding process steps (I) to (IV), is protected by means of a removable corrosion protection layer.
- This removable corrosion protection layer is applied by treating the metallic surface of the semifinished product with an aqueous, acidic preparation Z2.
- the upstream method step (0) can preferably be carried out by the manufacturer of the metallic surface Semi-finished, so for example, a steel manufacturer, aluminum manufacturer or rolling operation are performed.
- a metal strip such as a galvanized steel strip after galvanizing, may be provided in a continuous process in a removable corrosion protection layer.
- Such anticorrosion coatings are This is often referred to by the person skilled in the art as "after-treatment.” In this way, the metallic surface can be protected for transport and / or for carrying out process step (I).
- any acidic, aqueous corrosion protection formulations can be used as Z2, for example customary phosphorous phosphating solutions.
- the preparation Z2 like the preparation Z1, comprises at least water-soluble copolymer X, preferably a copolymer X1. It can also include other components.
- a preparation Z1 is also used in process step (0). The application of the corrosion protection layer can be carried out by the methods already described.
- the removable anticorrosion layer may be removed at a later time prior to performing step (III) in a cleaning step.
- an aqueous, alkaline rinse solution for example a dilute NaOH solution or NH 3 solution having a pH of from 9 to 13 at temperatures of from 20 to 70 ° C.
- the corrosion protection layer does not always have to be removed, but the semifinished product can optionally be further processed directly.
- the lacquered, sheet-like shaped body obtainable by the process has at least one metallic layer, a conversion layer obtainable by the treatment with the formulation Z1, and at least one lacquer layer.
- the conversion layer is naturally applied directly on the metal layer. It preferably has at least two different paint layers. The composition, structure and thickness of the conversion layer have already been described above.
- the conversion and lacquer layers can completely surround the shaped body, but the invention also encompasses shaped bodies in which only one surface of the shaped body has the conversion and lacquer layers, while the other has no or only a part of these layers.
- the shaped body is at least completely surrounded by a conversion layer and a basecoat, while further resist layers, such as, for example, color lakes, are applied only on the outside of the shaped body.
- the thickness of the metallic layer is preferably not more than 5 mm, more preferably not more than 3 mm and for example 0.25 to 2.5 mm. Examples of such moldings have already been mentioned at the beginning.
- the moldings according to the invention have coating layers adhering well to the metallic surface, and the surface is perfectly protected against corrosion.
- Copolymer X1 acrylic acid / maleic acid / vinylphosphonic acid copolymer (according to the invention):
- Acid group-containing copolymer of 60% by weight of acrylic acid, 20% by weight of maleic acid and 20% by weight of vinylphosphonic acid.
- the amount of the acid groups is 1.37 mol / 100 g of the polymer.
- the degree of neutralization of the acid groups is about 6 mol% (neutralized with triethanolamine), M w about 25,000 g / mol.
- Polyacrylic acid (not neutralized), M w about 100,000 g / mol.
- the amount of the acid groups is 1.4 mol / 100 g of the polymer.
- aqueous solutions of the copolymer X1 and of the comparative polymer were used.
- the formulations contained, if necessary, nor Mg 3 (PO 4) 2 and H3PO4 in the indicated amounts in Table 1.
- the concentration of the polymers was in each case 20% by weight with respect to the sum of all components of the formulation.
- Metal test panels were used in hot-galvanized steel (HDG Gardobond ® OE 3, 105 x 190 mm) for Examples and Comparative Examples.
- the panels were immersed in an alkaline cleaning solution (Ridoline ® C72, Fa. Henkel) for 10-20 seconds, immediately rinsed with deionized water and then dried with nitrogen.
- an alkaline cleaning solution Rosin ® C72, Fa. Henkel
- step IM Applying a conversion layer (step IM):
- the cleaned sheets were immersed at room temperature for each 1 s in the formulations listed in Table 1, squeezed off with a roller system and dried for 12 s at 160 0 C in a drying oven.
- the peak metal temperature in the course of drying did not exceed 50 ° C. 3 sheets were coated in each case.
- One of the respective coated sheets was deformed in analogy to the procedure in Erichsen tests (DIN 53156) by slowly pressing a ball (diameter: 20 mm) from the back of the sheet metal.
- the sheets were each deformed to an indentation depth of 8.4 mm, 8.8 mm and 9.2 mm.
- Corrosion tests were carried out in each case with the non-formed metal sheets coated with the conversion layer and the metal sheets shaped as described, in each case a condensed-water climate test with a change of air humidity and temperature according to DIN 50017 - KFW and a salt spray test (SSK) according to DIN 50021 -SS.
- SSK salt spray test
- the condensed water alternating climate test (DIN 51017) consists of one or more climatic cycles, each with two test sections. In the first section, the specimens are loaded for 8 hours at a temperature of 40 0 C and a relative humidity of 100%, in the second section at a temperature of 18-28 0 C at a humidity of less than 100% (ambient condition). The duration of a cycle is thus 24 hours.
- Chalking refers to a white haze of the coating, and as the level of chalking increases, the coating becomes less transparent.
- This spray test is a corrosion test standardized in DIN 50021, in which finely sprayed sodium chloride solution is allowed to act on the sample. On an inclined sample are sprayed at 35 0 C based on 80 cm 2 area 1, 5 ml / h of the solution using humidified compressed air. As a solution, a 5% NaCl solution was used. The coated samples are submitted intact to the test. The test duration is 24 h each.
- the quality of the corrosion protection in the salt spray test was evaluated in accordance with DIN EN ISO 10289 by assigning rating numbers from 0 to 10 according to specified standards.
- the rating is a measure of the formation of white rust on the sheet. The higher the rating, the lower the amount of corroded area and the better the corrosion protection.
- the allocation of the evaluation numbers was made according to the following table:
- the corrosion image was visually inspected at the impression site. The ratings were given "No corrosion, weak, light, medium, strong".
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008516307A JP2008544081A (ja) | 2005-06-14 | 2006-06-13 | 塗装された金属製フラット成形体の製造方法 |
CA002611427A CA2611427A1 (en) | 2005-06-14 | 2006-06-13 | Method for producing painted, flat metallic moulded bodies |
US11/917,293 US20080197020A1 (en) | 2005-06-14 | 2006-06-13 | Method for Producing Painted, Flat Metallic Moulded Bodies |
EP06763690A EP1893351A1 (de) | 2005-06-14 | 2006-06-13 | Verfahren zum herstellen von lackierten, flächenförmigen, metallischen formkörpern |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005027633A DE102005027633A1 (de) | 2005-06-14 | 2005-06-14 | Verfahren zum Herstellen von lackierten, flächenförmigen, metallischen Formkörpern |
DE102005027633.4 | 2005-06-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006134118A1 true WO2006134118A1 (de) | 2006-12-21 |
Family
ID=37057365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/063170 WO2006134118A1 (de) | 2005-06-14 | 2006-06-13 | Verfahren zum herstellen von lackierten, flächenförmigen, metallischen formkörpern |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080197020A1 (de) |
EP (1) | EP1893351A1 (de) |
JP (1) | JP2008544081A (de) |
KR (1) | KR20080017417A (de) |
CA (1) | CA2611427A1 (de) |
DE (1) | DE102005027633A1 (de) |
WO (1) | WO2006134118A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009047209A1 (de) * | 2007-10-05 | 2009-04-16 | Basf Se | Verfahren zum beschichten von verzinkten stahlbändern mit wässrigen formulierungen saurer polymere |
US8372216B2 (en) | 2008-10-20 | 2013-02-12 | Basf Se | Continuous method for treating the surface of metal strips |
EP2644739A1 (de) * | 2012-03-29 | 2013-10-02 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum Passivieren einer Metalloberfläche und Haushaltsgerät, insbesondere Haushaltsgeschirrspülmaschine mit einem Wandungsteil |
ES2472420A1 (es) * | 2012-12-28 | 2014-07-01 | Bsh Electrodom�Sticos Espa�A S.A. | Procedimiento para pasivar una superficie met�lica, y aparato doméstico, en particular, máquina lavavajillas doméstica con una parte de pared |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007038214A1 (de) * | 2007-08-13 | 2009-02-19 | Volkswagen Ag | Verfahren zum Korrosionsschutz von Karosserie-, Fahrwerks-, Motorbauteilen oder Abgasanlagen |
DE102009014604A1 (de) * | 2009-02-19 | 2010-08-26 | Liebherr-Hausgeräte Lienz Gmbh | Verfahren zur Herstellung einer Tür oder eines Deckels oder einer Wandung eines Haushaltsgerätes |
JP5894576B2 (ja) * | 2011-03-25 | 2016-03-30 | 日本ペイント・サーフケミカルズ株式会社 | 錫めっき鋼材用表面処理剤組成物及び表面処理された錫めっき鋼材 |
US20130115470A1 (en) * | 2011-11-03 | 2013-05-09 | Christian Schade | Preparation for passivating metallic surfaces, comprising acid-functional polymers and ti or zr compounds |
WO2013160567A1 (fr) * | 2012-04-25 | 2013-10-31 | Arcelormittal Investigacion Y Desarrollo, S.L. | Procédé de réalisation d'une tôle prélaquée à revêtements znalmg et tôle correspondante. |
US20140127520A1 (en) * | 2012-11-07 | 2014-05-08 | Basf Se | Mixtures for coating metallic surfaces |
DE102012220384A1 (de) | 2012-11-08 | 2014-05-08 | Henkel Ag & Co. Kgaa | Dosenvorbehandlung zur verbesserten Lackhaftung |
DE102012220385A1 (de) * | 2012-11-08 | 2014-05-08 | Henkel Ag & Co. Kgaa | Dosenvorbehandlung zur verbesserten Lackhaftung |
JP6586266B2 (ja) * | 2014-01-31 | 2019-10-02 | 貴和化学薬品株式会社 | 金属表面処理剤 |
DE102017118289B4 (de) | 2017-08-11 | 2023-08-03 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Bauteil für ein Kraftfahrzeug und Verfahren zum Herstellen eines beschichteten Bauteils aus einem Magnesiumwerkstoff |
DE102017121975A1 (de) * | 2017-09-22 | 2019-03-28 | GEDIA Gebrüder Dingerkus GmbH | Verfahren zur Herstellung von Bauteilen aus Metallblech |
KR102178725B1 (ko) * | 2018-12-19 | 2020-11-13 | 주식회사 포스코 | 이층 강판 표면처리용 조성물 및 이를 이용하여 표면처리된 강판 |
DE102019126196A1 (de) * | 2019-09-27 | 2021-04-01 | Benteler Automobiltechnik Gmbh | Kraftfahrzeug-Strukturbauteil und Verfahren zur Herstellung eines Kraftfahrzeug-Strukturbauteils |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004074372A1 (de) * | 2003-02-24 | 2004-09-02 | Basf Aktiengesellschaft | Carboxylat-haltige polymere für die metalloberflächenbehandlung |
WO2005042801A1 (de) * | 2003-10-23 | 2005-05-12 | Basf Aktiengesellschaft | Im wesentlichen chrom-freies verfahren zum passivieren von metallischen oberflächen aus zn, zn-legierungen, al oder al-legierungen |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4384902A (en) * | 1981-06-15 | 1983-05-24 | Occidental Chemical Corporation | Trivalent chromium passivate composition and process |
DE19524198C1 (de) * | 1995-07-03 | 1997-03-13 | Daimler Benz Ag | Lackiertes Blechbauteil, insbesondere Fahrzeugkarosserie, mit einer korrosionsschützenden Haftschicht auf Basis von Polysäuren und Verfahren zum Aufbringen einer solchen Haftschicht |
WO2002031064A1 (de) * | 2000-10-11 | 2002-04-18 | Chemetall Gmbh | Verfahren zur vorbehandlung oder/und beschichtung von metallischen oberflächen vor der umformung mit einem lackähnlichen überzug und verwendung der derart beschichteten substrate |
EP1670972A1 (de) * | 2003-09-30 | 2006-06-21 | BASF Aktiengesellschaft | Verfahren zum beizen metallischer oberflächen unter verwendung von alkoxylierten alkinolen |
BRPI0606329A2 (pt) * | 2005-01-14 | 2009-01-27 | Henkel Kgaa | composiÇço utilizÁvel para passivaÇço de uma superfÍcie de metal, processo de tratar um substrato de metal ferrÍfero, aluminÍfero e zincÍfero, e, artigo de fabricaÇço |
-
2005
- 2005-06-14 DE DE102005027633A patent/DE102005027633A1/de not_active Withdrawn
-
2006
- 2006-06-13 US US11/917,293 patent/US20080197020A1/en not_active Abandoned
- 2006-06-13 JP JP2008516307A patent/JP2008544081A/ja not_active Withdrawn
- 2006-06-13 EP EP06763690A patent/EP1893351A1/de not_active Withdrawn
- 2006-06-13 KR KR1020077030964A patent/KR20080017417A/ko not_active Application Discontinuation
- 2006-06-13 WO PCT/EP2006/063170 patent/WO2006134118A1/de active Application Filing
- 2006-06-13 CA CA002611427A patent/CA2611427A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004074372A1 (de) * | 2003-02-24 | 2004-09-02 | Basf Aktiengesellschaft | Carboxylat-haltige polymere für die metalloberflächenbehandlung |
WO2005042801A1 (de) * | 2003-10-23 | 2005-05-12 | Basf Aktiengesellschaft | Im wesentlichen chrom-freies verfahren zum passivieren von metallischen oberflächen aus zn, zn-legierungen, al oder al-legierungen |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009047209A1 (de) * | 2007-10-05 | 2009-04-16 | Basf Se | Verfahren zum beschichten von verzinkten stahlbändern mit wässrigen formulierungen saurer polymere |
US8372216B2 (en) | 2008-10-20 | 2013-02-12 | Basf Se | Continuous method for treating the surface of metal strips |
EP2644739A1 (de) * | 2012-03-29 | 2013-10-02 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum Passivieren einer Metalloberfläche und Haushaltsgerät, insbesondere Haushaltsgeschirrspülmaschine mit einem Wandungsteil |
ES2472420A1 (es) * | 2012-12-28 | 2014-07-01 | Bsh Electrodom�Sticos Espa�A S.A. | Procedimiento para pasivar una superficie met�lica, y aparato doméstico, en particular, máquina lavavajillas doméstica con una parte de pared |
Also Published As
Publication number | Publication date |
---|---|
JP2008544081A (ja) | 2008-12-04 |
KR20080017417A (ko) | 2008-02-26 |
EP1893351A1 (de) | 2008-03-05 |
DE102005027633A1 (de) | 2006-12-21 |
CA2611427A1 (en) | 2006-12-21 |
US20080197020A1 (en) | 2008-08-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1893787B1 (de) | Verfahren zum passivieren von metallischen oberflächen mit zubereitungen von säuregruppenhaltigen polymeren und wachsen | |
EP1893351A1 (de) | Verfahren zum herstellen von lackierten, flächenförmigen, metallischen formkörpern | |
EP1751326B1 (de) | Verfahren zum passivieren von metallischen oberflächen mit säuregruppen aufweisenden polymeren | |
EP2049708B1 (de) | Verfahren zum passivieren von metallischen oberflächen mit phosphorsäure- und/oder phosphonsäuregruppen aufweisenden copolymeren | |
EP1786953A1 (de) | Verfahren zum passivieren von metallischen oberflächen unter verwendung von itaconsäure homo- oder copolymeren | |
EP2773795B1 (de) | Zubereitung zur passivierung von metallischen oberflächen enthaltend säuregruppenhaltige polymere und ti- oder zr-verbindungen | |
EP1784436A1 (de) | Verfahren zur herstellung von carboxylatreichen copolymeren aus monoethylenisch ungestättigten mono- und dicarbonsäuren sowie carboxylatreiche copolymere mit niedrigem neutralisationsgrad | |
EP2625311A1 (de) | Verfahren zum passivieren einer metallischen oberfläche | |
DE102008053517A1 (de) | Lackhaftung durch Polyvinylamine in sauren wässrigen polymerhaltigen Korrosionsschutzmitteln | |
DE10349728A1 (de) | Im wesentlichen Chrom-freies Verfahren zum Passivieren von metallischen Oberflächen aus Zn, Zn-Legierungen, AI oder AI-Legierungen | |
WO2012045713A1 (de) | Verfahren zum passivieren von metallischen oberflächen mit wässrigen zusammensetzungen enthaltend tenside | |
EP2742169A1 (de) | Verfahren zum passivieren von metallischen oberflächen unter verwendung von carboxylathaltigen copolymeren |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2611427 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11917293 Country of ref document: US Ref document number: 2008516307 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2006763690 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020077030964 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 2006763690 Country of ref document: EP |