EP1333940B1 - Procédé pour la détermination de la température de preséchage d'un vernis d'électrodéposition - Google Patents

Procédé pour la détermination de la température de preséchage d'un vernis d'électrodéposition Download PDF

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Publication number
EP1333940B1
EP1333940B1 EP01988632A EP01988632A EP1333940B1 EP 1333940 B1 EP1333940 B1 EP 1333940B1 EP 01988632 A EP01988632 A EP 01988632A EP 01988632 A EP01988632 A EP 01988632A EP 1333940 B1 EP1333940 B1 EP 1333940B1
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EP
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Prior art keywords
temperature
electrodeposition coating
predrying
coat
surfacer
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Expired - Lifetime
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EP01988632A
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German (de)
English (en)
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EP1333940A2 (fr
Inventor
Karl-Heinz Grosse-Brinkhaus
Georg Wigger
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BASF Coatings GmbH
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BASF Coatings GmbH
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    • 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
    • B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer

Definitions

  • the invention relates to a method for determining the Predrying temperature of the electrodeposition paint in a method for Producing a multi-layer coating on an electrically conductive Substrate, wherein an electrodeposition paint film is deposited on the substrate, the electrocoating film by heating to a pre-drying temperature is pre-dried, a layer of a filler on the electrodeposition paint film and the electrodeposition paint film and the filler layer be baked together at elevated temperatures through which Dynamic Mechanical Termo Analysis (DMTA), as well as the use of the thus obtained multi-layer coatings.
  • DMTA Dynamic Mechanical Termo Analysis
  • the DMTA is off the German patent application DE 44 09 715 A1 known.
  • Electrodeposition paint For the production of multi-layer coatings with a primer of one Electrodeposition paint and an overlying paint layer is the method the so-called wet-on-wet application of electrocoating (ETL) and at least one further lacquer layer, for example from the Patent Applications EP 0 817 684 A1, EP 0 639 660 A1, EP 0 595 186 A1, EP 0 646 420 A1 or DE 41 26 476 A1. Paints that are "wet-in-wet" can be applied, liquid (aqueous, conventional or powder slurry) or be powdered. The paints can be pigmented and unpigmented and the production of Fillers or functional layers (pigmented) or clearcoats (unpigmented), but in particular the production of fillers serve.
  • ETL electrocoating
  • Paints that are "wet-in-wet” can be applied, liquid (aqueous, conventional or powder slurry) or be powdered.
  • the paints can be pigmented and unpigmented and the
  • the applied Electrocoating generally before the application of the next varnish pre-dried. This is usually done under conditions that include water and solvents are largely evaporated from the electrodeposition paint film. This procedure is ecologically and economically advantageous and also provides generally better quality coatings.
  • Object of the present invention is to provide a new method of the above mentioned type, the disadvantages of the prior art not longer, but ecologically and economically efficient qualitatively demanding multi-layer coatings that provides an improved Surface quality (Appearance of the overall structure including clear coat) and have a better course of painting.
  • the improved appearance should especially significant in the values of a long wave / short wave Wavescans (light reflection) expressing a value for the amount of scattered light supplies.
  • the rockfall protection properties be improved.
  • Another aspect of the present invention is the Use of the multicoat paint systems in the automotive finishing and in industrial painting.
  • the predetermined period of time for carrying out the predrying in step b) is typically 1 to 60 minutes, preferably 5 to 15 minutes.
  • the substrate is preferably at ambient temperature returned before the filler is applied.
  • the time between the Electrodeposition coating and the filler application is freely selectable.
  • This pre-drying takes place at a temperature dependent on the filler material Instead, so that the expert the optimum temperature due to its general Expert knowledge, where appropriate, with the help of orienting experiments easily can determine.
  • the thickness of the cured electrodeposition paint film is preferably 10 ⁇ m to 30 microns, more preferably 15 microns to 20 microns.
  • the thickness of the cured Filler layer depends on the filler material and is preferably 10 microns to 60 ⁇ m.
  • electrocoating baths are aqueous coating materials (ETL) with a Solids content of in particular 5 to 30 wt .-%.
  • ETL aqueous coating materials
  • complementary functional groups (a2) come the binder (A) preferably thio, amino, hydroxyl, carbamate, allophanate, carboxy, and / or (meth) acrylate groups, but especially hydroxyl groups, and as complementary functional groups (b1) preferably anhydride, carboxy, Epoxy, blocked isocyanate, urethane, methylol, methylol ether, siloxane, Amino, hydroxy and / or beta-hydroxyalkylamide groups, but in particular blocked isocyanate groups into consideration.
  • the binders (A) with functional groups (a11) become cathodic depositable electrodeposition paints (KTL), whereas the binders (A) with functional groups (a12) in anodic electrodeposition paints (ATL) be applied.
  • Examples of suitable functional groups to be used according to the invention (a11) obtained by neutralizing agents and / or quaternizing agents in Cations can be transferred are primary, secondary or tertiary Amino groups, secondary sulfide groups or tertiary phosphines groups, in particular tertiary amino groups or secondary sulfide groups.
  • Suitable cationic groups to be used according to the invention (a11) are primary, secondary, tertiary or quaternary ammonium groups, tertiary sulfonium groups or quaternary phosphonium groups, preferably quaternary ammonium groups or quaternary ammonium groups, tertiary Sulfonium groups, but especially quaternary ammonium groups.
  • Suitable functional groups to be used according to the invention (a12), which can be converted by neutralizing agents into anions are Carboxylic acid, sulfonic acid or phosphonic acid groups, in particular Carboxylic acid groups.
  • Suitable anionic groups to be used according to the invention (a12) are carboxylate, sulfonate or phosphonate groups, in particular Carboxylate groups.
  • the selection of the groups (a11) or (a12) should be such that no interfering Reactions with the functional groups (a2) with the cross-linking agents (B) can react are possible.
  • the expert can therefore choose in simple way to make his expertise.
  • Suitable neutralizing agents for cationic convertible functional groups (a11) are inorganic and organic acids such as Sulfuric acid, hydrochloric acid, phosphoric acid, amidosulfonic acid, lactic acid, Dimethylolpropionic acid or citric acid, in particular formic acid, Acetic acid or lactic acid.
  • Suitable Neutralizing Agents for Anion Convertible functional groups are ammonia, ammonium salts, such as Ammonium carbonate or ammonium bicarbonate, as well as amines, e.g. Trimethylamine, triethylamine, tributylamine, dimethylaniline, diethylaniline, Triphenylamine, dimethylethanolamine, diethylethanolamine, methyldiethanolamine, Triethanolamine and the like.
  • the amount of neutralizing agent is chosen so that 1 to 100 equivalents, preferably 50 to 90 equivalents of the functional Groups (a11) or (a12) of the binder (b1) are neutralized.
  • binders (A) for ATL are known from DE 28 24 418 A 1 known. This is preferably polyester, Epoxy resin esters, poly (meth) acrylates, maleate oils or polybutadiene oils with a weight average molecular weight of 300 to 10,000 daltons and a Acid number from 35 to 300 mg KOH / g.
  • binders (A) for KTL are disclosed in patents EP 0 082 291 A1, EP 0 234 395 A1, EP 0 227 975 A1, EP 0 178 531 A1, EP 0 333 327, EP 0 310 971 A1, EP 0 456 270 A1, US Pat. No.
  • resins (A) having amine numbers preferably between 20 and 250 mg KOH / g and a weight average molecular weight of preferably 300 to 10,000 daltons.
  • binder (A) modified epoxy resins according to WO 98/33835, which are obtainable by using an epoxy resin a mixture of mono- and diphenols, the resulting product reacted with a polyamine to an amino epoxy resin, after which the resulting Aminoepoxidharz in a further stage with an organic Amine reacts to the modified epoxy resin (see WO 98/33835, page 19, line 1, to page 21, line 30).
  • KTL in particular KTL based on the above described binder (A) and the corresponding electrocoating baths preferably used.
  • the ETL contain crosslinking agents (B).
  • Suitable, preferably used crosslinking agents (B) are blocked organic polyisocyanates, in particular blocked so-called Lacquer polyisocyanates with aliphatic, cycloaliphatic, araliphatic and / or aromatically bound, blocked isocyanate groups.
  • Polyisocyanates with 2 to 5 are preferred for their preparation Isocyanate groups per molecule and with viscosities of 100 to 10,000, preferably 100 to 5000 and especially 100 to 2000 mPas (at 23 ° C) used.
  • the polyisocyanates in the usual and known manner be hydrophilic or hydrophobic modified.
  • polyisocyanate adducts examples include isocyanate group-containing Polyurethane prepolymers obtained by reaction of polyols with an excess can be prepared on polyisocyanates and are preferably low in viscosity. It is also possible to use isocyanurate, biuret, allophanate, iminooxadiazinedione, Urethane, urea carbodiimide and / or uretdione groups Polyisocyanates are used. Urethane containing polyisocyanates For example, by reacting a portion of the isocyanate groups with Polyols, e.g. Trimethylolpropane and glycerin.
  • Polyols e.g. Trimethylolpropane and glycerin.
  • crosslinking agents (B) are all known aliphatic and / or cycloaliphatic and / or aromatic polyepoxides, for example based on bisphenol-A or bisphenol-F.
  • polyepoxides for example, those commercially available under the names are also suitable Epikote® from Shell, Denacol® from Nagase Chemicals Ltd., Japan, available polyepoxides, e.g.
  • Denacol EX-411 Penaerythritol polyglycidyl ether
  • Denacol EX-321 Trimethylolpropane polyglycidyl ether
  • Denacol EX-512 polyglycerol polyglycidyl ether
  • Denacol EX-521 polyglycerol polyglycidyl ether
  • crosslinking agent (B) can also tris (alkoxycarbonylamino) triaols (TACT) of the general formula be used.
  • tris (alkoxycarbonylamino) triazines (B) examples include U.S. Pat Patents US 4,939,213 A, US 5,084,541 A or EP 0 624 577 A1 described. In particular, the tris (methoxy, tris (butoxy and / or Tris (2-ethylhexoxycarbonylamino) triazines used.
  • methyl-butyl mixed esters the butyl 2-ethylhexyl mixed esters and the butyl esters. These have compared to the pure methyl ester the Advantage of better solubility in polymer melts and also tend less to crystallize.
  • crosslinking agents (B) are aminoplast resins, For example, melamine, guanamine, benzoguanamine or urea resins.
  • the customary and known amino resins are also suitable, their methylol and / or methoxymethyl groups z. T. by means of carbamate or Allophanate groups are defunctionalized.
  • crosslinking agents (B) are beta-hydroxyalkylamides such as N, N, N ', N'-tetrakis (2-hydroxyethyl) adipamide or N, N, N', N'-tetrakis (2-hydroxypropyl) adipamide.
  • crosslinking agents (B) are compounds with im Means at least two groups capable of transesterification, for example Reaction products of malonic diesters and polyisocyanates or of Esters and partial esters of polyhydric alcohols of malonic acid with Monoisocyanates, as described in European Patent EP 0 596 460 A1 to be discribed;
  • the amount of crosslinking agent (B) in the ETL can vary widely and be directed in particular on the one hand on the functionality of the crosslinking agent (B) and second, according to the number of existing in the binder (A) crosslinking functional groups (a2) and the crosslink density, the you want to achieve.
  • the person skilled in the art can therefore calculate the amount of crosslinking agent (B) on the basis of its general expertise, where appropriate with the aid of Determine easier orienting experiments.
  • This is advantageous Crosslinking agent (B) in the ETL in an amount of 5 to 60% by weight, particularly preferably 10 to 50% by weight and in particular 15 to 45% by weight, in each case based on the solids content of the inventive Coating material, included.
  • the Amounts of crosslinking agent (B) and binder (A) to be chosen so that in the ETL the ratio of functional groups (b1) in the crosslinking agent (B) and functional groups (a2) in the binder (A) between 2: 1 to 1: 2, preferably 1.5: 1 to 1: 1.5, more preferably 1.2: 1 to 1: 1.2 and especially 1.1: 1 to 1: 1.1.
  • the ETL may contain paint additives (C) in effective amounts.
  • additives (C) are by nature not in the non-pigmented ETL available.
  • crosslinking agents (B) and / or the above described additives (C) can also be described in the following Be contained in fillers.
  • lead-free cathodic catheters offer particular advantages and are therefore preferably used.
  • fillers or antistonechip primers are from Patent specifications US Pat. No. 4,537,926 A1, EP 0 529 335 A1, EP 0 595 186 A1, EP 0 639 660 A 1, DE 44 38 504 A 1, DE 43 37 961 A1, WO 89/10387, US 4,450,200 A 1, US 4,614,683 A 1, WO 94/26827 or EP 0 788 52 3 B 1 known.
  • the Fillers can be used as conventional, d. H. solvent-based or aqueous Coating materials are present. In addition, powder coatings or powder slurry paints be used.
  • aqueous fillers are used.
  • aqueous fillers which are used as binders water-dilutable polyurethane resin included.
  • Particularly preferred aqueous fillers based on water-dilutable polyurethane resins which are obtainable by reacting polyester and / or polyether polyols, polyisocyanates, Compounds having at least one isocyanate-reactive group and at least a (potentially) anionic group in the molecule and optionally compounds with Reacting hydroxyl and / or amino groups with each other.
  • the polyurethane resin is at least partially neutralized and in water dispersed. The dispersion is then treated with pigments and crosslinkers completed (see, for example, the European patent EP 0 788 523 B1, page 5, lines 1 to 29).
  • the function of the filler or the coating produced therefrom is the Compensation of disturbing unevenness (in the micrometer range) at the Surface of a substrate, so that the surface of the substrate is not one equalizing pretreatment before coating with a coating needs to be subjected. This is also the comparatively high Layer thickness of the filler. He also serves the purpose of acceptance and dissipation mechanical energy, as it occurs during rockfall.
  • the multicoat paint system produced by the process according to the invention can be used as such for the above-mentioned uses be (2-coat coating). But you can also use a clearcoat or Solid-color overcoating, creating a 3-coat finish The result is an economical alternative to comparatively expensive ones Offers coatings. For demanding uses, where especially on a particularly good Appearance arrives, which can after the inventive method produced with a multi-layer coating Color and / or effect basecoat / clearcoat finish, preferably After the wet-on-wet process, are coated (4-coat coating).
  • the inventive method is based on the finding that it is at the predrying of an electrocoating paint in the context of wet-in-wet Application of an ETL and a filler not primarily to the evaporation of the Solvent arrives, but that exceeding a temperature important is where internal changes in the electrocoat occur, which are in express an extremum of a viscoelastic property.
  • the considered viscoelastic property of the electrocoating paint is the Loss factor tan ⁇ .
  • An improvement in the coating result in Predrying temperatures above the maximum of the loss factor tan ⁇ has been proven in numerous experiments.
  • the DMTA is a well-known measuring method for the determination of viscoelastic properties of coatings and, for example described in Murayama, T., Dynamic Mechanical Analysis of Polymeric Materials, Elsevier, New York, 1978, pages 299-329 and Loren W. Hill, Joumal of Coatings Technology, Vol. 808, May 1992, pages 31-33.
  • the process conditions in the measurement of tan ⁇ using the DMTA are by Th. Frey, K.-H. Great Brinkhaus, U. Röckrath, in Cure Monitoring Of Thermoset Coatings, Progress In Organic Coatings 27 (1996) 59-66, or in US Pat DE 44 09 715 A 1 described in detail.
  • the particular advantages of the method according to the invention are limited but not on the combination of electrocoating and Filler paint, but also shine on the overlying paint finishes out.
  • the course of the paint is improved.
  • the temperature is maintained for a further 60 minutes Kept 60 ° C and an NCO equivalent weight of 1120 g / eq determined (based on fixed shares).
  • 867 parts are melted Trimethylolpropane added so that a product temperature of 100 ° C is not is exceeded.
  • the reaction is allowed to continue for a further 60 minutes. It is cooled to 65 ° C and simultaneously diluted with 963 parts of n-butanol and 300 parts of methyl isobutyl ketone.
  • the solids content is 70.1% (1 h at 130 ° C).
  • Plastilit® 3060 75 minutes after addition of amine, 903 parts of Plastilit® 3060 are added (Propylene glycol compound, BASF AG), diluted with 522 parts Propylene glycol phenyl ether (mixture of 1-phenoxy-2-propanol and 2-phenoxy-1-propanol, Fa. BASF AG), and at the same time rapidly cools to 95 ° C.
  • reaction mixture After 10 minutes, 14821 parts of the reaction mixture are transferred to a dispersion vessel. There are added with stirring 474 parts of lactic acid (88% in water), dissolved in 7061 parts of deionized water. The mixture is then homogenized for 20 minutes before further dilution with further 12600 parts of deionized water in small portions. By distillation in vacuo, the volatile solvents are removed and then replaced by the same amount of deionized water.
  • Dispersion D1 has the following characteristics: Solids content 33.8% (1 h at 130 ° C) 29.9% (0.5 h at 180 ° C) Base salary 0.71 milliequivalents / g of solids (130 ° C) acidity 0.36 milliequivalents / g of solids (130 ° C) pH 6.3 particle size 116 nm (mass means from photon correlation spectroscopy)
  • binder dispersion D2 is completely analogous to Binder Dispersion D1, however, are mixed with immediately after dilution Propylene glycol phenyl ether 378 parts K-KAT 348 (bismuth 2-ethylhexanoate; King Industries, USA) with stirring of the organic step.
  • K-KAT 348 bismuth 2-ethylhexanoate
  • the dispersion D2 has the following characteristics: Solids content 33.9% (1 h at 130 ° C) 30.1% (0.5 h at 180 ° C) Base salary 0.74 milliequivalents / g of solids (130 ° C) acidity 0.48 milliequivalents / g of solids (130 ° C) pH 5.9 particle size 189 nm (mass means from photon correlation spectroscopy)
  • Dispersion D3 has the following characteristics: Solids content 45% (1 h at 130 ° C) 40.1% (0.5 h at 180 ° C) Base salary 0.82 milliequivalents / g of solids (130 ° C) Acidity: 0.42 milliequivalents / g of solids (130 ° C) pH: 6.1 particle size: 129 nm (mass means from photon correlation spectroscopy)
  • Example 1.3 an organic-aqueous solution of a Epoxide-amine adduct prepared by reacting 2598 parts in a first stage Bisphenol A diglycidyl ether (epoxy equivalent weight (EEW): 188 g / eq), 787 Parts bisphenol A, 603 parts dodecylphenol and 206 parts butylglycol in Presence of 4 parts of triphenylphosphine at 130 ° C to an EEW of 865 g / eq react.
  • EW epoxy equivalent weight
  • step 5 premixed epoxy-amine adduct described. Then 5 parts carbon black, 60 Parts Extender ASP 200, 351 parts Titanium dioxide TI-PURE® R 900 (DuPont) and 54 parts of dibutyltin oxide (Fascat 4203, Elf-Atochem) and added 30 min mixed under a high-speed Dissolverrlickwerk. Subsequently the mixture is up to 1 h to 1.5 h in a laboratory agitated-mill a Hegman fineness of 12 ⁇ m dispersed and with more water optionally adjusted to the desired processing viscosity.
  • the electrocoating binder dispersions D1-D3 and optionally the pigment paste (step 8) were used to prepare the following electrodeposition paints: ETL1 ETL2 ETL3 Dispersion D1 2771 - - Dispersion D2 - 2492 - Dispersion D3 - - 1871 pigment paste 313 VE water 1916 2508 3129
  • the resulting electrodeposition paints have a solids content of about 20% im Trap of the pigmented system ETL 1 and 15% in the case of clear coats ETL 2-3.
  • the application conditions were chosen so that after a Badalterung of min. 24 h on not passively rinsed steel panels (e.g., Bo 26 W 42 OC) after firing (15 min 180 ° C object temperature) smooth films with a layer thickness of about 20 microns received.
  • the DMTA showed a sudden strong change of the storage modulus E 'and the loss factor tan ⁇ at about 145 ° C, which is due to the beginning of the cross-linking reaction. Furthermore, it could be seen that below this crosslinking temperature, the loss factor tan ⁇ at a temperature T p of about 90 ° C shows a maximum (peak). As could be determined by further investigations, this maximum was not due to a glass transition in the considered KTL material.
  • the sheets were not baked, but predried only for 10 min at 80 ° C or at 100 ° C in a convection oven.
  • the temperatures were chosen because the deposited electro-lacquer films as described above had a maximum of the loss factor tan ⁇ at T p > 80 ° C
  • the aqueous paint (step 11) with a Dry film thickness of 19 microns applied and pre-dried at 70 ° C. Subsequently, KTL and the aqueous paint for 15 min at 180 ° C. Object temperature baked together.
  • the boards For further testing (especially stone impact test) the boards with a commercial white basecoat with a dry film thickness of 18 microns and with a commercially available two-component clearcoat with a layer thickness from 35 to 40 ⁇ m overcoated. These layers are at 130 ° C for 30 min baked.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
  • Laminated Bodies (AREA)
  • Epoxy Resins (AREA)

Claims (15)

  1. Procédé de détermination de la température de préséchage d'une peinture, d'électrophorèse par immersion dans le cadre d'un procédé de réalisation d'une peinture en plusieurs couches, qui comprend les étapes qui consistent à :
    a) déposer un film de peinture d'électrophorèse par immersion sur le support,
    b) présécher le film de peinture d'électrophorèse par immersion en le chauffant à une température de préséchage pendant une durée prédéterminée,
    c) apporter une couche de charge sur le film de peinture d'électrophorèse par immersion et
    d) cuire ensemble le film de peinture d'électrophorèse par immersion et la couche de charge à température élevée,
    caractérisé en ce que l'on détermine la température (Tp) à laquelle le facteur de perte tan δ de la peinture d'électrophorèse par immersion, qui est le rapport entre le module de perte E" et le module d'accumulation E', présente une valeur extrême à l'état non encore cuit et en ce que la température de préséchage est de 0°C à 35°C supérieure cette température (Tp).
  2. Procédé selon la revendication 1, caractérisé en ce que la température de préséchage sélectionnée est de 5°C à 25°C au-dessus de la température (Tp) à laquelle le facteur de perte tan δ de la peinture d'électrophorèse par immersion présente une valeur extrême à l'état non encore cuit.
  3. Procédé selon les revendications 1 ou 2, caractérisé en ce que le facteur de perte tan δ est déterminé par analyse thermomécanique dynamique (DMTA).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que, pour réaliser le film de peinture d'électrophorèse par immersion, on utilise une peinture d'électrophorèse par immersion qui contient :
    (A) au moins une résine époxy modifiée qui sert de liant, que l'on peut préparer en transformant une résine époxy au moyen d'un mélange de monophénols et de diphénols, en transformant le produit obtenu au moyen d'une polyamine pour obtenir une résine d'amino-époxy et en laissant ensuite réagir la résine d'amino-époxy avec une amine organique lors d'une autre étape pour obtenir la résine époxy modifiée; et
    (B) au moins un polyisocyanate bloqué qui sert d'agent de réticulation.
  5. Procédé selon la revendication 4, caractérisé en ce que, lors de l'étape b), la température de préséchage est comprise entre 70°C et 120°C et de préférence entre 80°C et 100°C.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que, lors de l'étape b), la durée de préséchage prédéterminée est comprise entre 1 et 60 min et de préférence entre 5 et 15 min.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que l'épaisseur du film de peinture d'électrophorèse par immersion durci est comprise entre 10 µm et 30 µm et de préférence entre 15 µm et 20 µm.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé en ce que l'épaisseur de la couche de charge durcie est comprise entre 10 µm et 60 µm.
  9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce que l'on refroidit le support à la température ambiante avant d'appliquer la charge.
  10. Procédé selon l'une des revendications 1 à 9, caractérisé en ce que la peinture d'électrophorèse par immersion est une peinture d'immersion apte à être déposée cathodiquement.
  11. Procédé selon l'une des revendications 1 à 10, caractérisé en ce que la charge est une peinture à l'eau.
  12. Procédé selon la revendication 11, caractérisé en ce que comme liant, la charge comprend une résine de polyuréthane soluble dans l'eau.
  13. Procédé selon l'une des revendications 1 à 12, caractérisé en ce que la peinture de charge forme la couche supérieure de la peinture en plusieurs couches (peinture en 2 couches), ou est revêtue d'un vernis ou d'une peinture en une seule couche (peinture en 3 couches) ou est revêtue d'un revêtement primaire et d'un revêtement secondaire qui sont colorants et/ou produisent un effet (peinture en 4 couches).
  14. Procédé selon l'une des revendications 1 à 13, dans lequel les peintures en plusieurs couches réalisées sont utilisées pour peindre des automobiles et en peinture industrielle.
  15. Procédé selon la revendication 14, dans lequel la peinture industrielle comprend la peinture de radiateurs, de jantes et d'enjoliveurs.
EP01988632A 2000-10-23 2001-10-19 Procédé pour la détermination de la température de preséchage d'un vernis d'électrodéposition Expired - Lifetime EP1333940B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10052438 2000-10-23
DE10052438A DE10052438C2 (de) 2000-10-23 2000-10-23 Verfahren zur Erzeugung einer Mehrschichtlackierung und deren Verwendung
PCT/EP2001/012102 WO2002034418A2 (fr) 2000-10-23 2001-10-19 Procede pour produire une mise en peinture a couche multiple et son utilisation

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EP1333940A2 EP1333940A2 (fr) 2003-08-13
EP1333940B1 true EP1333940B1 (fr) 2005-12-28

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US (1) US7087146B2 (fr)
EP (1) EP1333940B1 (fr)
JP (1) JP4292007B2 (fr)
AT (1) ATE314159T1 (fr)
AU (1) AU2002223627A1 (fr)
DE (2) DE10052438C2 (fr)
ES (1) ES2255580T3 (fr)
WO (1) WO2002034418A2 (fr)

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DE50108583D1 (de) 2006-02-02
JP4292007B2 (ja) 2009-07-08
ATE314159T1 (de) 2006-01-15
JP2004513224A (ja) 2004-04-30
DE10052438C2 (de) 2002-11-28
EP1333940A2 (fr) 2003-08-13
ES2255580T3 (es) 2006-07-01
US20040094425A1 (en) 2004-05-20
AU2002223627A1 (en) 2002-05-06
WO2002034418A2 (fr) 2002-05-02
WO2002034418A3 (fr) 2002-11-07
US7087146B2 (en) 2006-08-08
DE10052438A1 (de) 2002-05-02

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