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WO2021198866A1 - Composition bleue de revêtement par électrodéposition cathodique (ced) - Google Patents

Composition bleue de revêtement par électrodéposition cathodique (ced) Download PDF

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Publication number
WO2021198866A1
WO2021198866A1 PCT/IB2021/052550 IB2021052550W WO2021198866A1 WO 2021198866 A1 WO2021198866 A1 WO 2021198866A1 IB 2021052550 W IB2021052550 W IB 2021052550W WO 2021198866 A1 WO2021198866 A1 WO 2021198866A1
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WO
WIPO (PCT)
Prior art keywords
range
pigment paste
polyoxyalkylene
pigment
coating composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2021/052550
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English (en)
Inventor
Laxman Shankar NIKAM
Sharan Vitthal POOJARI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kansai Nerolac Paints Ltd
Original Assignee
Kansai Nerolac Paints Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kansai Nerolac Paints Ltd filed Critical Kansai Nerolac Paints Ltd
Publication of WO2021198866A1 publication Critical patent/WO2021198866A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • C09D17/00—Pigment pastes, e.g. for mixing in paints
    • C09D17/003—Pigment pastes, e.g. for mixing in paints containing an organic pigment
    • 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
    • C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
    • C09D5/448—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications characterised by the additives used

Definitions

  • the present disclosure relates to a coating composition.
  • the present disclosure relates to a blue cathodic electrodeposition (CED) coating composition.
  • CED blue cathodic electrodeposition
  • Cathodic Electro Deposition refers to a process of coating an object having a conductive surface connected to a circuit as the cathode, by positively charged paint particles suspended in aqueous medium, under direct current.
  • Electro-deposition of primer coating has become universal and is widely used for a modern automotive paint industry.
  • In electrodeposition (ED) charged particles from the paint emulsion move to Anode (AED) or Cathode (CED) under electrical forces.
  • AED Anode
  • CED Cathode
  • the direct current established through the bath makes the pigment and resin base of the paint, wander towards the body surfaces. Coating reaches all the recessed area.
  • One of the major advantages of electrocoat processes is that, the applied film forms a uniform layer over a variety of metallic substrates regardless of shape and configuration.
  • E-coat is a dip wet paint coating process that provides excellent corrosion resistance and provides a protective paint layer when applied to an automotive body.
  • an entire automotive body is immersed in a liquid bath.
  • an electrical current By applying an electrical current, a thin paint film forms over all the surfaces which are in contact with the liquid, including those surfaces in recessed portions of the body.
  • the E- coat paint process deposits a thin paint film on the automotive body under the influence of a voltage gradient of about 100 to 300 volts.
  • the water-based E-coat paint bath is conductive with an array of anodes that extends into the bath delivering a DC current.
  • the so obtained paint film has enhanced physical properties that resist corrosion (appear only after the automotive body has been cured in an oven).
  • E-coat processes can either be Anodic or Cathodic depending on the polarity of the charge.
  • anodic systems the part is the anode which is positively charged, and attracts the negatively charged paint particles in the bath.
  • Anodic E-coat is supplied as one component system. This process is not widely used due to less corrosion resistance and durability.
  • Cathodic systems the part is negatively charged, which attracts the positively charged paint particles.
  • Cathodic e-coat is supplied as two component system, i.e., pigment paste as one component and resin emulsion as a second component.
  • E-coat bath is prepared by mixing pigment paste and resin emulsion in a ratio of 1: 3.5 ⁇ 0.5 which is diluted by addition of deionized water so as to adjust the solids of the E-coat bath in the range of 15 ⁇ 3 % depending on the dimension and geometry of the part.
  • Organic acid is added to the bath to adjust the pH of the bath in the range of 5.6 ⁇ 0.3.
  • CED coating composition contains water, monobasic acid, organic, organometallic and inorganic pigments, a cathodically depositable binders having functional groups comprising active hydrogen, for example hydroxyl groups, primary and/or secondary amino groups and blocked poly isocyantes as the crosslinking agents (curing agents).
  • curing agents for example hydroxyl groups, primary and/or secondary amino groups and blocked poly isocyantes.
  • An object of the present disclosure is to ameliorate one or more problems of the prior art or to at least provide a useful alternative.
  • Another object of the present disclosure is to provide a coating composition.
  • Still another object of the present disclosure is to provide a cathodic electrodeposition (CED) coating composition.
  • Another object of the present disclosure is to provide a cathodic electrodeposition (CED) coating composition that is in blue shade/color.
  • Still another object of the present disclosure is to provide a blue cathodic electrodeposition (CED) coating composition that reduces the consumption of top coat paints.
  • CED blue cathodic electrodeposition
  • Yet another object of the present disclosure is to provide a cathodic electrodeposition (CED) coating composition that is stable, has consistency in shade/color and does not flocculate.
  • CED cathodic electrodeposition
  • the present disclosure relates to a blue cathodic electrodeposition (CED) coating composition
  • a blue cathodic electrodeposition (CED) coating composition comprising a cathodic electrodeposition pigment paste and a resin emulsion.
  • the epoxy cathodic electrodeposition pigment paste comprises at least one anti- settling agent in an amount in the range of 0.1 to 1.5 wt%, at least one dispersing agent in an amount in the range of 15 to 25 wt%, at least one wetting agent in an amount in the range of 1 to 2 wt%, pigment blue in an amount in the range of 5 to 15 wt%, at least one filler in an amount in the range of 10 to 40 wt%, at least one surfactant in an amount in the range of 0.1 to 1.5 wt%, at least one catalyst in an amount in the range of 2 to 10 wt%, at least one anti-corrosive pigment in an amount in the range of 1 to 10% and q. s. fluid medium.
  • the present disclosure further provides a process for preparation of the cathodic electrodeposition (CED) pigment paste.
  • the process comprises mixing predetermined amounts of at least one anti-settling agent and a first fluid medium under stirring at a first predetermined speed followed by cooling to a temperature in the range of 10°C to 30°C to obtain a first pre-mixed slurry.
  • Predetermined amounts of at least one dispersing agent, at least one wetting agent and at least one surfactant are added to the first pre-mixed slurry under stirring at a second predetermined speed to obtain a second pre-mixed slurry.
  • predetermined amounts of blue pigment and at least one catalyst are added to the second pre-mixed slurry under stirring for a first predetermined time period to obtain a third pre-mixed slurry.
  • predetermined amounts of at least one filler and at least one anticorrosive pigment are added to the third pre-mixed slurry under stirring for a second predetermined time period to obtain a homogeneous mixture.
  • the homogeneous mixture is then ground at a temperature in the range of 10°C to 30°C to obtain a resultant mixture having a particle size in the range of 1m to 15m.
  • the resultant mixture is then thinned with a second fluid medium to obtain the cathodic electrodeposition (CED) pigment paste.
  • the cathodic electrodeposition (CED) pigment paste is used in preparation of cathodic electrodeposition (CED) coating composition.
  • Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present disclosure. In some embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.
  • CED coating compositions currently employed contains water, monobasic acid, organic, organometallic and inorganic pigments, a cathodically depositable binders having functional groups comprising active hydrogen, for example hydroxyl groups, primary and/or secondary amino groups and blocked poly isocyantes as the crosslinking agents (curing agents).
  • binders having functional groups comprising active hydrogen, for example hydroxyl groups, primary and/or secondary amino groups and blocked poly isocyantes as the crosslinking agents (curing agents).
  • active hydrogen for example hydroxyl groups, primary and/or secondary amino groups and blocked poly isocyantes
  • curing agents blocked poly isocyantes
  • E-coat process consist various components coated on line which is having different shape, size, weight and thickness. Since baking oven is common, these components will attain varying EMT (Effective Metal temperature) and hence there will be variation in shade from component to component.
  • EMT Effective Metal temperature
  • CED blue cathodic electrodeposition
  • the blue CED coating composition comprises an epoxy cathodic electrodeposition pigment paste and a resin emulsion.
  • the epoxy cathodic electrodeposition pigment paste comprises at least one anti-settling agent in an amount in the range of 0.1 to 1.5 wt% with respect of the total weight of the pigment paste; at least one dispersing agent in an amount in the range of 15 to 25 wt% with respect of the total weight of the pigment paste; at least one wetting agent in an amount in the range of 1 to 2 wt% with respect of the total weight of the pigment paste; pigment blue in an amount in the range of 5 to 15 wt% with respect of the total weight of the pigment paste; at least one filler in an amount in the range of 10 to 40 wt% with respect of the total weight of the pigment paste; at least one surfactant in an amount in the range of 0.1 to 1.5 wt% with respect of the total weight of the pigment paste; at least one catalyst in an amount in the range of 2 to 10 wt% with respect of the total weight of the pigment paste; at
  • the anti-settling agent is at least one selected from the group consisting of wax, urethane-modified polyether (epoxy extension with isocyanate moiety to form an urethane modified polyether), acrylic polymers, hydrophilic silica and xanthan gum.
  • wax is selected from microcrystalline cellulose, maltrodextrin, xanthan gum and combination thereof.
  • the anti settling agent is a mixture of microcrystalline cellulose, maltrodextrin and xanthan gum.
  • the dispersing agent is at least one selected from the group consisting of epoxy resin (having a molecular weight of 3000 g/mol), aliphatic amine salts, quaternary ammonium salt, aliphatic alcohol sulfate, alkyl sulfonate, poly-oxy-ethylene alkyl ether, sorbitan esters, and fluorine surfactant.
  • the dispersing agent is a resin with quaternary ammonium salt used in pigment for dispersion.
  • the dispersing agent is epoxy resin.
  • the wetting agent is at least one selected from the group consisting of intermediate epoxy resin (having a molecular weight of 1250 g/mol), acetylene tertiary alcohol, alkylamine, and amide.
  • the wetting agent is a resin with quaternary ammonium salt used for pigment wetting.
  • the wetting agent is an intermediate epoxy resin.
  • the pigment blue is beta copper phthalocyanine.
  • the pigment blue imparts blue color to the composition.
  • the filler is at least one selected from the group consisting of clay and titanium dioxide (Ti(3 ⁇ 4).
  • the clay is at least one selected from the group consisting of china clay, calcined clay, naturally occurring anhydrous clay and hydrous clay, and hydrated aluminium silicate.
  • the filler is china clay and the amount of china clay is 9.7 wt%. In another exemplary embodiment the filler is Ti(3 ⁇ 4 and the amount of Ti(3 ⁇ 4 is 9.3 wt%. In still another exemplary embodiment, the filler is a combination of clay and Ti(3 ⁇ 4 and the amount of the combination of china clay and Ti(3 ⁇ 4 is 19 wt%.
  • the filler used in the composition of the present disclosure can also be used as extenders and provides better opacity to the composition.
  • the surfactant is an anionic surfactant.
  • the anionic surfactant is selected from the group consisting of polyoxyalkylene styrenated phenyl ether sulfate, polyoxyalkylene styrenated phenyl ether phosphate, polyoxyalkylene styrenated phenyl ether carboxylate, polyoxyalkylene styrenated phenyl ether sulfosuccinate, polyoxyalkylene alkyl ether sulfate, polyoxyalkylene alkyl ether phosphate, polyoxyalkylene alkyl ether carboxylate, polyoxyalkylene alkyl ether sulfosuccinate, polyoxyalkylene alkenyl ether sulfate, polyoxyalkylene alkenyl ether phosphate, polyoxyalkylene alkenyl ether carboxylate, polyoxyalkylene alkenyl ether ether
  • the catalyst is at least one selected from a tin precursor and a bismuth precursor.
  • the tin precursor is selected from Dioctyl Tin Oxide (DOTO), Dibutyltin Oxide (DBTO), Tetrabutyl Titanate (TBT), Dibutyltin Benzoate, and bismuth precursor is bismuth hydroxide (BiOtT).
  • the catalyst is precursor of tin and the amount of tin precursor is 3.64 wt%. In another exemplary embodiment, the catalyst is precursor of bismuth and the amount of bismuth precursor is 3.64 wt%. In still another exemplary embodiment, the catalyst is a combination of precursor of tin and bismuth and the amount of the combination of tin and bismuth precursor is 7.28 wt%.
  • the catalyst used in the present disclosure is used for curing the composition.
  • the anti-corrosive pigment is at least one selected from aluminum triphosphate and magnesium zinc aluminum hydroxide.
  • the anti-corrosive pigment is aluminum triphosphate and the amount of aluminum triphosphate is 0.87 wt%.
  • the anti-corrosive pigment is magnesium zinc aluminum hydroxide and the amount of magnesium zinc aluminum hydroxide is 0.87 wt%.
  • the anti-corrosive pigment is a combination of aluminum triphosphate and magnesium zinc aluminum hydroxide and the amount of the combination of aluminum triphosphate and magnesium zinc aluminum hydroxide is 1.74 wt%.
  • the anti-corrosive pigment used in the present disclosure is used to resist the corrosion.
  • the fluid medium is water.
  • the amount of fluid medium is q. s.
  • Water is ultra-violet (UV) radiation treated water, deionized water (DI) or water obtained by reverse osmosis treatment.
  • the fluid medium is deionized water.
  • cathodic electrodeposition coating composition conventional composition of resin emulsion (F-2) is used.
  • the resin emulsion is an epoxy modified emulsion polymer (EM-950).
  • a weight ratio of the epoxy cathodic electrodeposition pigment paste to the resin emulsion is in the range of 1:2 to 1:5. In another embodiment, the weight ratio of the epoxy cathodic electrodeposition pigment paste to the resin emulsion is in the range of 1:3 to 1:4.5. In an exemplary embodiment, the ratio of the epoxy cathodic electrodeposition pigment paste to the resin emulsion is 1:3.76.
  • the blue epoxy CED pigment paste has the following composition (F-l): Table 1: Blue epoxy CED pigment paste in accordance with the present disclosure:
  • the epoxy cathodic electrodeposition pigment paste (F-l) comprises an anti-settling agent in 0.45 wt%, dispersing agent in 21.90 wt%, wetting agent in 0.87 wt% , pigment blue in 7.70 wt%, filler in 19.0 wt%, surfactant in 0.4 wt%, catalyst in 7.28 wt%, anti-corrosive pigment in 1.74 wt% and q. s. fluid medium.
  • the weight % of each of the component is with respect to the total weight of the pigment paste.
  • the present disclosure provides pigment paste (F-l) which does not flocculate, provides consistent shade/color, ease in grinding of pigment, and stable.
  • the blue CED composition of the present disclosure has blue shade/color and when the blue CED composition of the present disclosure is applied on the surface, the consumption of top coat paints is reduced for the following reasons: a) being same shade the top coat will have better coverage; b) for interior parts which are not exposed to weather, top coat application is not required.
  • predetermined amounts of at least one anti-settling agent and a first fluid medium are mixed by stirring at a first predetermined speed followed by cooling to a temperature in the range of 10°C to 30°C to obtain a first pre-mixed slurry.
  • the first predetermined speed is in the range of 400 to 600 rpm. In an exemplary embodiment, the first predetermined speed is 500 rpm.
  • predetermined amounts of at least one dispersing agent, at least one wetting agent and at least one surfactant are added to the first pre-mixed slurry under stirring at a second predetermined speed to obtain a second pre-mixed slurry. If lump formation is observed, the slurry is further agitated.
  • the second predetermined speed is in the range of 800 to 1000 rpm. In an exemplary embodiment, the second predetermined speed is 900 rpm.
  • predetermined amounts of blue pigment and at least one catalyst are added to the second pre-mixed slurry followed by agitating for a first predetermined time period to obtain a third pre-mixed slurry.
  • the first predetermined time period is in the range of 20 to 50 minutes. In an exemplary embodiment, the first predetermined time period is 30 minutes.
  • predetermined amounts of at least one filler and at least one anticorrosive pigment are added to the third pre-mixed slurry under agitation for a second predetermined time period to obtain a homogeneous mixture and avoid lump formation.
  • the second predetermined time period is in the range of 20 to 50 minutes. In an exemplary embodiment, the second predetermined time period is 30 minutes.
  • the homogeneous mixture is then ground at a temperature in the range of 10°C to 30°C to obtain a resultant mixture having a particle size in the range of 1m to 15m. Fineness is checked after each pass.
  • the premix slurry is ground for 4-6 passes until a predetermined fineness is attained.
  • the resultant slurry is then collected in a thinning mixer.
  • the resultant mixture is then thinned with a second fluid medium to obtain the cathodic electrodeposition (CED) pigment paste.
  • CED cathodic electrodeposition
  • the agitation speed is in the range of 400 to 600 rpm and the agitation time is in the range of 7 to 15 minutes.
  • the samples of the slurry are tested and filled through a 10 micron filter in barrels or storage tanks.
  • the components of the pigment paste are added in a stepwise manner so as to avoid any lump formation and thereby achieving a homogeneous pigment paste.
  • the homogeneous pigment paste when used in the CED coating composition results in a paint that is stable, consistent in shade/ colour, has a smooth appearance, and does not flocculate when applied on surfaces. If the stepwise addition pattern or the specific sequence of addition of the components is not followed, there would be formation of lumps in the pigment paste which would ultimately lead to non-uniform coating i.e., number of bits (coarse particulates appearing on the coating) of the coating will be higher which is not desirable.
  • the present disclosure provides an electrodeposition (ED) bath dilution formula comprising predetermined amounts of the blue CED pigment paste, resin emulsion, acetic acid and q. s. water.
  • the electrodeposition (ED) bath dilution formula comprises the following:
  • the resin emulsion F-2 and blue pigment paste F-l are mixed in the ratios as mentioned in Table 2 to form a cathodic electrodeposition (ED) coating composition.
  • the composition is then diluted with water.
  • acetic acid is added and agitated for a time period of 24 to 48 hours.
  • the present disclosure provides a blue cathodic electrodeposition (CED) coating composition comprising a cathodic electrodeposition pigment paste and a resin emulsion and process for its preparation.
  • the coating composition of the present disclosure does not flocculate, provides a consistent shade/color, ease in grinding of pigment, and is stable.
  • Example 1 Preparation of blue cathodic electrodeposition (CED) coating composition:
  • CED blue cathodic electrodeposition
  • predetermined amount of anti-settling agent was mixed in DI water and stirred at 500 rpm for 30 minutes to avoid foaming and cooled to 20°C to obtain a first pre mixed slurry.
  • predetermined amounts of dispersing agent and wetting agent was added to first pre-mixed slurry under stirring at a speed of 900 rpm for a period of 30 minutes to obtain a second pre-mixed slurry.
  • a predetermined amount of pigment blue and a catalyst were added and further agitated for a time period of 30 minutes to obtain a third pre mixed slurry, such that there were no lumps formed.
  • the above pigment paste was mixed with resin emulsion to form the CED coating composition.
  • the electrodeposition bath dilution formulation was prepared in a container in accordance with Table 3a and was coated on a surface.
  • Table 3b Shade stability after ED bath ageing studied @ 18 ⁇ 20 m DFT.
  • the color tone panel was tested for the anticorrosive performance and other physical film properties.
  • the tested color tone panel was offered to the tractor customer.
  • the customer was able to achieve 10 to 15% reduction in top coat consumption due to elimination of top coat application in interior parts of the tractors.
  • Examples 2- 4 To study paint properties by varying the amount of anti-settling agents in the CED coating composition.
  • the electrodeposition bath dilution formulation was prepared in a container accordance with Table 2 and was kept still for 72 hours. After 72 hours, the formulation was agitated and coated on a surface with 1 minute interval and 2 minutes of coating. Following results were obtained:
  • Examples 5-6 To study the paint properties by varying the amount of pigment blue in the CED coating composition. Examples 5: Same experimental procedure was followed as described in example-1, except that respective percentages of various components used were as given in Table 6, wherein the quantity of pigment blue used was ⁇ 5 wt%.
  • Table 7 Shade stability after ED bath ageing studied @ 18 ⁇ 20 m DFT.
  • Table 9 Shade stability after ED bath ageing studied @ 18 ⁇ 20 m DFT.
  • Electrodeposition bath dilution formulation was prepared in accordance with the composition as disclosed in Table 3a and the bath was prepared in an open container at 240 rpm at 30°C water bath for 40 hours. The coating was performed in a rectifier. The characteristics of the ED film observed after completion of ageing test are provided in Table 10.
  • CED blue cathodic electrodeposition

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Paints Or Removers (AREA)

Abstract

La présente invention concerne une composition bleue de revêtement par électrodéposition cathodique comprenant une pâte époxy pigmentaire d'électrodéposition cathodique et une émulsion de résine. La présente divulgation concerne en outre un procédé de préparation de la pâte époxy pigmentaire d'électrodéposition cathodique. La composition de revêtement par électrodéposition cathodique (CED) est utilisée pour conférer une nuance/couleur bleue qui réduit la consommation de peintures de revêtement supérieur. La composition de revêtement par électrodéposition cathodique (CED) de la présente invention est stable, présente une consistance de nuance/couleur et ne flocule pas lorsqu'elle est appliquée sur la surface.
PCT/IB2021/052550 2020-03-31 2021-03-27 Composition bleue de revêtement par électrodéposition cathodique (ced) Ceased WO2021198866A1 (fr)

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IN202021014431 2020-03-31
IN202021014431 2020-03-31

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WO2021198866A1 true WO2021198866A1 (fr) 2021-10-07

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024056309A1 (fr) * 2022-09-15 2024-03-21 Basf Coatings Gmbh Compositions de matériaux de revêtement par électrodéposition comprenant des particules composites contenant un catalyseur contenant du métal
WO2024056308A1 (fr) * 2022-09-15 2024-03-21 Basf Coatings Gmbh Compositions de matériau de revêtement par électrodéposition comprenant une suspension de pigment et des particules composites contenant un catalyseur contenant du métal

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003011583A2 (fr) * 2001-07-31 2003-02-13 Ppg Industries Ohio, Inc. Composites multicouches faits de compositions a adherence amelioree, compositions pour revetements, et procedes associes
WO2014074234A1 (fr) * 2012-11-09 2014-05-15 Basf Coatings Gmbh Procédé pour améliorer le durcissement d'un revêtement pour un article revêtu dans une composition de revêtement par électrodéposition contaminée par du phosphate et composition de revêtement par électrodéposition

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003011583A2 (fr) * 2001-07-31 2003-02-13 Ppg Industries Ohio, Inc. Composites multicouches faits de compositions a adherence amelioree, compositions pour revetements, et procedes associes
WO2014074234A1 (fr) * 2012-11-09 2014-05-15 Basf Coatings Gmbh Procédé pour améliorer le durcissement d'un revêtement pour un article revêtu dans une composition de revêtement par électrodéposition contaminée par du phosphate et composition de revêtement par électrodéposition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024056309A1 (fr) * 2022-09-15 2024-03-21 Basf Coatings Gmbh Compositions de matériaux de revêtement par électrodéposition comprenant des particules composites contenant un catalyseur contenant du métal
WO2024056308A1 (fr) * 2022-09-15 2024-03-21 Basf Coatings Gmbh Compositions de matériau de revêtement par électrodéposition comprenant une suspension de pigment et des particules composites contenant un catalyseur contenant du métal

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