EP0729390B1 - Procede de reparation avec plusieurs couches de peinture - Google Patents

Procede de reparation avec plusieurs couches de peinture Download PDF

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Publication number
EP0729390B1
EP0729390B1 EP95900722A EP95900722A EP0729390B1 EP 0729390 B1 EP0729390 B1 EP 0729390B1 EP 95900722 A EP95900722 A EP 95900722A EP 95900722 A EP95900722 A EP 95900722A EP 0729390 B1 EP0729390 B1 EP 0729390B1
Authority
EP
European Patent Office
Prior art keywords
basecoat
coated
composition
aqueous
old
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95900722A
Other languages
German (de)
English (en)
Other versions
EP0729390A1 (fr
Inventor
Hermann Liedtke
Herbert Kortwinkel
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.)
BASF Coatings GmbH
Original Assignee
BASF Coatings GmbH
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 BASF Coatings GmbH filed Critical BASF Coatings GmbH
Publication of EP0729390A1 publication Critical patent/EP0729390A1/fr
Application granted granted Critical
Publication of EP0729390B1 publication Critical patent/EP0729390B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/005—Repairing damaged coatings

Definitions

  • Those eligible for a refinish Substrates are either old paint (factory paint or refinishing), primed new parts (mostly ETL primed, especially in the area the painting of truck bodies) as well as steel, aluminum, galvanized sheet or plastic.
  • old paint factory paint or refinishing
  • primed new parts mostly ETL primed, especially in the area the painting of truck bodies
  • steel, aluminum, galvanized sheet or plastic The selection suitable paint materials and the process used aimed at producing a refinish the surface to be painted and the Customer claims.
  • the production of a multi-layer refinish is usually done by thorough cleaning the damaged area, sanding, if necessary filling and applying of a repair filler on the one to be coated Job. In the case of full paintwork, the same is done Pretreatment of the entire old paint to be coated. Then the painting is done prepared area.
  • the present invention was therefore the object Basically, a process for making a refinish to make available with which also at critical shades of refinish with a very good quality. This means that Color changes, cloud formation, etc. avoided should be.
  • Refinish procedures can be obtained at who avoided the common problems or at least be significantly reduced. Especially is common in conventional repair procedures observed cloud formation avoided. Significant is going to get these excellent results too using aqueous metallic basecoats can be achieved.
  • the inventive method for producing a multilayer refinishing can be done on the different substrates can be used.
  • the old paint to receive the refinish prepared. Usually this becomes the old paintwork is first thoroughly cleaned, e.g. with a silicone remover, and with grinding paste or Sanded sandpaper. Then the pre-treated Surface usually cleaned again degreased. In addition, it is also possible to use the old paint for example with an adhesion promoter solution prepaint. This preparation of the old paint is known and therefore does not need to be explained in more detail.
  • an aqueous or water-dilutable or conventional coating agent can then be applied to the correspondingly prepared old paint.
  • highly diluted clear coats are usually applied, which can be both aqueous, water-dilutable and conventional.
  • conventional clear coats they must be predried before the basecoat is applied. This is usually done by heating the clear lacquer layer to a temperature below 140 ° C., preferably below 80 ° C., for a period of 5-60 minutes. If aqueous coating agents are used for this process step, a baking step may be omitted and after a short flash-off time of 5-50 min. the base coating composition can be applied directly.
  • the old paint is pre-sprayed with such a clear coat, it may be possible to dispense with sanding the old paint.
  • the above-described pretreatment of the old paint is done by cleaning and sanding.
  • Aqueous clearcoats suitable for this pretreatment of the old coating are described, for example, in DE-OS-40 09 000.
  • the conventional clearcoats typically used for this purpose such as those sold by Glasurit GmbH, can also be used.
  • the area of the old paint which is adjacent to the previously coated area of the old paint, is again coated with the aqueous basecoat composition in two directly successive spray passes until a limit is reached in accordance with the previous statements.
  • a fender of the car is first coated with the aqueous base coating composition in two successive spray passes.
  • Process step (c) described above is carried out until the entire part to be coated is provided with a base layer. In the example described above, this means, for example, that after the fender has been coated, the adjacent door is again provided with the base layer in 2 spray passes.
  • the flash-off time is usually less than 30 min, particularly preferably a flash-off time of less than 20 min. Without is particularly preferred Flash-off time between the first and second spraying worked.
  • the base coating composition For application of the base coating composition is worked under the usual conditions. This means that for example with a normal or only a slightly reduced spray gun pressure worked becomes.
  • the spray gun inlet pressure is preferably between 3.0 and 4.5 bar.
  • the spray gun outlet pressure varies depending on the used Spray gun. When using an HVLP (high volume, Low Pressure) gun, for example, it is between 0.6 and 0.7 bar.
  • HVLP high volume, Low Pressure
  • basecoats used spray guns suitable for example the above-mentioned HVLP pistols, but also normal pneumatic high-performance spray guns (e.g. SATA-Jet 1.4E).
  • Base coating compositions used as binders contain at least one polyurethane resin. So are, for example, those described in DE-OS-40 09 000 aqueous base coating compositions suitable. Also suitable are those using a mixing system produced aqueous Base coating compositions.
  • a suitable transparent top coating composition upset After forming a polymer film from the basecoat composition, preferably after drying the Base layer at temperatures below 140 ° C, preferred at temperatures below 80 ° C, during a Time of 5-60 min, if necessary after a short cooling time of generally at least 5 min Base layer a suitable transparent top coating composition upset.
  • the dry film thickness the top layer is generally between 30 and 100 ⁇ m.
  • the dry film thickness of the Base layer is generally between 10 and 25 ⁇ m.
  • Clear varnishes are often used based on a hydroxyl-containing acrylate copolymer and a polyisocyanate. Such Clear varnishes are, for example, in the patent applications DE-OS-34 12 534, DE-OS-36 09 519, DE-OS-37 31 652 and DE-OS-38 23 005 described. Also suitable are the in the international patent application with the international Publication number WO 88/02010 described moisture-curing clear lacquers based on Polyaddition polymers with alkoxy or aryloxysilane units.
  • the top layer is then together with the Base layer at temperatures of up to 140 ° C, preferred at temperatures below 100 ° C, and especially preferably at temperatures from 60 to 80 ° C during dried over a period of 5-120 min.
  • multi-layer refinishing come different substrates into consideration, such as B. Old paintwork (factory painting or refinishing) and primed new parts (mostly ETL primed, especially in the area of painting truck bodies).
  • B. Old paintwork factory painting or refinishing
  • primed new parts mostly ETL primed, especially in the area of painting truck bodies.
  • the process for whole-part refinishing used.
  • An electro-primed steel sheet serves as the substrate, which is coated with a commercially available, conventional filler material based on a melamine-crosslinked polyester resin (FC60-7133 from BASF Lacke + Weg, Weg; dry film thickness 40 ⁇ m), a commercially available, conventional metallic basecoat based on cellulose acetobutyrate (AE54-9153 from BASF Lacke + Weg, Weg; dry film thickness 15 ⁇ m) and a commercially available conventional clear coat based on isocyanate-crosslinked hydroxyl-containing acrylates (AF23-0185 from BASF Lacke + Weg, Weg, GmbH; dry film thickness 60 ⁇ m).
  • the coated sheet is additionally stored for several hours at an elevated temperature, for example 60 ° C, and the coating is thus aged.
  • the old paintwork simulated in this way is first cleaned, then roughened with sandpaper and cleaned again.
  • the commercially available 1-component glassohyd® 76-86W basic filler from BASF Lacke + Maschinen AG, Weg, is then applied to the old paint prepared in this way with 2 spray passes in two spray passes and dried at 60 ° C. for 30 minutes. Then the aqueous commercial repair basecoat VW mintmet is applied. VWL-B6 / 00U from BASF Lacke + Maschinen AG, Weg (dry film thickness 15 ⁇ m).
  • the application is carried out by means of the HVLP spray gun (High Volume Low Pressure) spray gun SATA Jet B NR92 (nozzle width 1.3 mm) at a spray gun inlet pressure of 4.5 bar (spray gun outlet pressure 0.7 bar).
  • HVLP spray gun High Volume Low Pressure
  • SATA Jet B NR92 nozzle width 1.3 mm
  • spray gun inlet pressure 4.5 bar
  • spray gun outlet pressure 0.7 bar
  • the coating obtained in this way shows excellent surface properties.
  • the one obtained Coating advantages in terms of cloud formation compared to coatings in which the complete car body in one shot with the Metallic basecoat is coated and only after completion the entire body of the basecoat in a second coat on the whole Body is applied.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
  • Coating With Molten Metal (AREA)
  • Road Signs Or Road Markings (AREA)

Claims (5)

  1. Procédé de préparation d'une peinture de réparation multicouche, lors duquel
    1. l'on procède à l'apprêt de la peinture ancienne par nettoyage, polissage ou, le cas échéant, application d'un mastic et/ou d'un matériau de pigment de charge,
    2. l'on procède à l'application d'une composition de revêtement de base aqueuse, contenant des pigments métalliques et/ou des pigments à effets, par l'intermédiaire d'une application par pulvérisation,
    3. l'on forme, à partir de la composition appliquée au cours de l'étape (2), un film polymère,
    4. l'on procède à l'application, sur la couche de base ainsi obtenue, d'une couche de revêtement de finition transparente appropriée et
    5. l'on procède ensuite au séchage de la couche de finition conjointement à la couche de base, à des températures allant jusqu'à 140°C, de préférence à des températures de moins de 100°C et en particulier de préférence à des températures allant de 60 à 80°C,
    caractérisé en ce que l'on procède à l'application, dans l'étape (2) du procédé, de la composition de revêtement de base aqueuse de telle manière que
    a) l'on procède, dans une première passe de pulvérisation, à l'application de la composition de revêtement de base aqueuse, jusqu'à l'obtention d'une limite sur la surface apprêtée de l'ancienne peinture,
    b) l'on procède alors, dans une deuxième passe de pulvérisation, au revêtement de la surface revêtue dans l'étape (a) de l'ancienne peinture à l'aide de la composition de revêtement de base aqueuse,
    c) les étapes (a) et (b) du procédé étant répétées dans le domaine de l'ancienne peinture qui est adjacent au domaine de l'ancienne peinture revêtue antérieurement, a nouveau jusqu'à l'obtention d'une limite, et
    d) l'on effectue l'étape de procédé (c) aussi longtemps qu'il est nécessaire pour que la partie à revêtir toute entière soit pourvue d'une couche de base.
  2. Procédé selon la revendication 1, caractérisé en ce qu'entre l'application de la composition de revêtement de base dans la première passe de pulvérisation (a) et la deuxième passe de pulvérisation (b), il y a interposition d'un temps de ventilation à l'air de < 30 minutes, mais il n'y a de préférence interposition d'aucun temps de ventilation à l'air.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'on forme, à partir de la composition de revêtement de base appliquée dans l'étape (2), un film polymère, en procédant au séchage de la couche de base à des températures de moins de 140°C, de préférence de moins de 80°C, pendant une période de 5 à 60 minutes.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'on utilise une composition de revêtement de base aqueuse, qui contient en tant que liant au moins une résine de polyuréthanne.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'on prépare une peinture de réparation d'automobile.
EP95900722A 1993-11-20 1994-11-12 Procede de reparation avec plusieurs couches de peinture Expired - Lifetime EP0729390B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4339612 1993-11-20
DE4339612A DE4339612A1 (de) 1993-11-20 1993-11-20 Verfahren zur Herstellung einer mehrschichtigen Reparaturlackierung
PCT/EP1994/003755 WO1995014540A1 (fr) 1993-11-20 1994-11-12 Procede de reparation avec plusieurs couches de peinture

Publications (2)

Publication Number Publication Date
EP0729390A1 EP0729390A1 (fr) 1996-09-04
EP0729390B1 true EP0729390B1 (fr) 1998-09-16

Family

ID=6503047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95900722A Expired - Lifetime EP0729390B1 (fr) 1993-11-20 1994-11-12 Procede de reparation avec plusieurs couches de peinture

Country Status (9)

Country Link
US (1) US5871809A (fr)
EP (1) EP0729390B1 (fr)
JP (1) JPH09506292A (fr)
AT (1) ATE171090T1 (fr)
BR (1) BR9408088A (fr)
DE (2) DE4339612A1 (fr)
DK (1) DK0729390T3 (fr)
ES (1) ES2124517T3 (fr)
WO (1) WO1995014540A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6291027B1 (en) 1999-05-26 2001-09-18 Ppg Industries Ohio, Inc. Processes for drying and curing primer coating compositions
US6221441B1 (en) 1999-05-26 2001-04-24 Ppg Industries Ohio, Inc. Multi-stage processes for coating substrates with liquid basecoat and powder topcoat
US6113764A (en) * 1999-05-26 2000-09-05 Ppg Industries Ohio, Inc. Processes for coating a metal substrate with an electrodeposited coating composition and drying the same
US6596347B2 (en) 1999-05-26 2003-07-22 Ppg Industries Ohio, Inc. Multi-stage processes for coating substrates with a first powder coating and a second powder coating
US6863935B2 (en) 1999-05-26 2005-03-08 Ppg Industries Ohio, Inc. Multi-stage processes for coating substrates with multi-component composite coating compositions
US6231932B1 (en) 1999-05-26 2001-05-15 Ppg Industries Ohio, Inc. Processes for drying topcoats and multicomponent composite coatings on metal and polymeric substrates
US7011869B2 (en) * 1999-05-26 2006-03-14 Ppg Industries Ohio, Inc. Multi-stage processes for coating substrates with multi-component composite coating compositions
EP1147823B1 (fr) * 2000-04-17 2005-05-04 E.I. Du Pont De Nemours And Company Procédé de réparation de revêtements multicouches sur des substrats
DE10124277A1 (de) * 2001-05-18 2002-11-28 Basf Coatings Ag Integriertes Verfahren zur Reparatur farb- und/oder effektgebender Mehrschichtlackierungen
US6777033B2 (en) * 2002-03-18 2004-08-17 E. I. Du Pont De Nemours And Company Process for refinishing substrates
US20040146638A1 (en) * 2002-12-17 2004-07-29 Harald Kloeckner Process for repairing coatings
FR2875422B1 (fr) * 2004-09-20 2007-07-13 Renault Sas Procede de realisation d'une retouche de peinture d'un vehicule
US7393556B2 (en) * 2005-11-07 2008-07-01 E.I. Du Pont De Nemours And Company Process for the production of a multilayer vehicle repair coating
DE102009032117B3 (de) * 2009-07-08 2011-02-24 Audi Ag Verfahren zum Herstellen einer Mattlackierung
JP2022545284A (ja) * 2019-08-23 2022-10-26 エントロテック・インコーポレーテッド ペイントフィルムを補修する方法および補修されたペイントフィルムを含む物品
CN114871075B (zh) * 2022-06-07 2023-06-30 上海申龙客车有限公司 一种修补汽车车漆的方法

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US3930069A (en) * 1972-07-31 1975-12-30 Charles Edward Stephens Refinish painting method
US4201799A (en) * 1976-12-27 1980-05-06 Stephens Charles E Refinish painting apparatus
US4265936A (en) * 1978-08-18 1981-05-05 Prohaska Jr Theodore Vehicle refinishing process
US4420520A (en) * 1980-07-03 1983-12-13 The Excello Specialty Company Area coated paint mask and method
US4313970A (en) * 1980-07-03 1982-02-02 The Excello Speciality Company Method of masking a workpiece for painting
US4814200A (en) * 1985-08-26 1989-03-21 International Flying Colors, Inc. Method for restoring painted surface
DE3609961A1 (de) * 1986-03-25 1988-01-28 Herwig K Dr Med Erdelt Verfahren zum ausbessern von lackschaeden bzw. einlegen verschiedenfarbiger konturen, z.b. schriftzuege, kleinere flaechen in intakte lackflaechen
ES2039586T3 (es) * 1988-03-25 1993-10-01 Maeda Kiko Company Limited Metodo y dispositivo para el tratamiento de una superficie.
JPH0372979A (ja) * 1989-08-11 1991-03-28 Nippon Paint Co Ltd ハイソリッドメタリック塗膜の補修方法
US5128176A (en) * 1990-02-05 1992-07-07 Schmidt Dan R Masking tape
DE4009000A1 (de) * 1990-03-21 1991-09-26 Basf Lacke & Farben Verfahren zur herstellung einer mehrschichtigen reparaturlackierung
DE4010176A1 (de) * 1990-03-30 1991-10-02 Basf Lacke & Farben Verfahren zur herstellung einer mehrschichtigen lackierung und waessriger lack
DE4021126C2 (de) * 1990-07-03 1998-01-29 Basf Lacke & Farben Lacke und Verwendung der Lacke zur Lackierung von Automobilkarosserien
US5254192A (en) * 1991-09-03 1993-10-19 E. I. Du Pont De Nemours And Company Process for matching color of paints on vehicles
US5283084A (en) * 1992-05-08 1994-02-01 Basf Corporation Process for making wrinkle-free coating using solventborne clearcoat composition over waterborne basecoat composition

Also Published As

Publication number Publication date
ES2124517T3 (es) 1999-02-01
DE59406940D1 (de) 1998-10-22
BR9408088A (pt) 1997-08-12
WO1995014540A1 (fr) 1995-06-01
ATE171090T1 (de) 1998-10-15
DK0729390T3 (da) 1999-06-14
JPH09506292A (ja) 1997-06-24
DE4339612A1 (de) 1995-05-24
EP0729390A1 (fr) 1996-09-04
US5871809A (en) 1999-02-16

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