EP1040875A2 - Soft feeling multi-layer coating - Google Patents

Soft feeling multi-layer coating Download PDF

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Publication number
EP1040875A2
EP1040875A2 EP00103045A EP00103045A EP1040875A2 EP 1040875 A2 EP1040875 A2 EP 1040875A2 EP 00103045 A EP00103045 A EP 00103045A EP 00103045 A EP00103045 A EP 00103045A EP 1040875 A2 EP1040875 A2 EP 1040875A2
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EP
European Patent Office
Prior art keywords
layer
layer coating
soft feeling
coating according
soft
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Granted
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EP00103045A
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German (de)
French (fr)
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EP1040875A3 (en
EP1040875B1 (en
Inventor
Patrick Praet
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Bollig and Kemper KG
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Bollig and Kemper KG
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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
    • 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
    • B05D7/53—Base coat plus clear coat type

Definitions

  • the present invention relates to a multi-layer coating with a soft-feel effect and their use.
  • soft feeling paints are understood to mean those paints that are characterized by a special feel (grip).
  • the softfeel effect is based essential on a combination of braking and sliding action. This gives one touches an object coated with a softfeel varnish Impression of touching a leather or velvet-like object, regardless of the actual feel of the substrate.
  • Soft feeling paints are used especially for painting plastics and for Automotive interior painting used.
  • EP-0 669 352 B1 describes soft-feeling lacquers based on polyester / polyurethane. All Examples reveal a soft feeling lacquer that also contains the pigment. Application of this soft feeling varnish to a pigmented coating is not called.
  • a particular problem with the soft feeling lacquers known to date is their adhesiveness on different substrates. Due to the rubber-elastic properties of a Soft feeling lacquers show such coatings on critical substrates (e.g. Plastic surfaces) poorer adhesion than comparable paints without a soft feeling effect. Adhesion promoters therefore very often have to be used in the field of plastic painting in order to achieve acceptable liability in this way.
  • critical substrates e.g. Plastic surfaces
  • the object of the present invention is to provide a pigmented coating with soft-feel effect and their use, with particular liability and the soft-feel effect compared to the known soft-feeling paints of the prior art Technology are improved.
  • This object is achieved, according to the invention, by a multi-layer coating from a coloring first layer on the substrate and one another unpigmented second layer located above the first layer, the second layer entirely or partially of an unpigmented soft-feeling lacquer is available.
  • the first, coloring layer can in principle be any layer, by a crosslinking or curing process of a pigmented coating composition based on organic solvents, water or powder is available.
  • Varnishes which are known as so-called Basecoats "can be used for the multi-layer coating of car bodies.
  • This multilayer coating of automobiles generally consists of a total of four different layers (electrocoat layer, filler layer, basecoat layer and clearcoat layer). It is the task of the basecoat layer to give the body the desired color and to provide a precisely defined adhesion to the filler layer. The latter property is particularly important for the stone chip resistance of a car paint.
  • a preferred embodiment of the invention is the use of a pigmented water-based lacquer to form the first, color-imparting layer.
  • a pigmented water-based lacquer to form the first, color-imparting layer.
  • this embodiment makes it possible to significantly reduce solvent emissions, particularly when painting on plastic substrates.
  • it is advantageous to briefly dry it (eg for 5 minutes at 60 ° C) before applying the unpigmented soft-feeling lacquer.
  • the dry film thickness has the properties of the multi-layer coating according to the invention no decisive influence, it usually lies in one Range between 12 to 40 ⁇ m.
  • any lacquer can be used which contains at least one binder which, due to its special chemical and physical properties, gives this layer the rubber-elastic properties necessary for the soft-feeling effect.
  • binder are known per se and are already used for the production of pigmented soft feeling lacquers.
  • the amount of this binder is usually in a range between 25 and 65% by weight, based on the solids content.
  • unpigrued is understood to mean paints or coatings that do not contain any coloring pigments. Under the term color pigments "are not understood as matting agents that usually contain layered silicates or waxes.
  • binders that give the second layer the soft feeling properties confer, such binders are based on polyester / polyurethane. These binders are described in detail in European Patent 0 669 352 and are described by the Bayer AG sold under the trade name Bayhydrol®.
  • the soft-feel multi-layer coating according to the invention shows a significantly improved Haptics compared to the pigmented soft feeling lacquers of the prior art.
  • Multi-layer painting is the separation of binders, which is for the actual Soft feeling effect are responsible, and the coloring pigment (s).
  • the dry layer thickness of the second layer is usually in a range between 15 to 60 ⁇ m. In general, the thicker the dry layer thickness, the clearer the soft feeling effect becomes.
  • Another embodiment of the invention is the use of a matting agent in the second, unpigmented layer. This causes an increase in the braking effect of the finished paint layer. This way it is possible to get the exact one Adjust braking and sliding effect of the multi-layer coating according to the invention.
  • the multilayer coating according to the invention is particularly preferably suitable for the Painting of plastic surfaces, especially of parts of the automotive interior trim. It is particularly advantageous for the latter area that parts of the interior panels with the same paint and the same devices can be coated, such as plastic attachments (e.g. bumpers).
  • plastic attachments e.g. bumpers
  • the mixture obtained in this way is ground in a bead mill to a granularity of 5 ⁇ m. Then 100 g of a commercially available thickener (Viscalex® HV 30 Paste 3%) and 60.0 g of fully demineralized water are added to the mixture. Then 40 g of a commercially available polyurethane dispersion (Bayhydrol® 2952 E) are added with stirring.
  • the basecoat produced in this way is adjusted to a pH of 8 using Amietol® M21 and the viscosity is adjusted to 35 seconds at 20 ° C., measured with a DIN B4 beaker, by adding demineralized water.
  • the basecoat described above is applied to a plastic plate using a spray gun made of Bayblend® T 85 (polycarbonate / ABS) with the dimensions 210 * 150 * 3 mm applied so that a dry layer thickness of 15 microns is obtained. Then this one Coat the layer for 2 minutes at room temperature and then 4 minutes dried long at 80 ° C. Then the soft feeling clear coat described above applied by means of a spray gun, so that a dry layer thickness of 55 microns is obtained. After a flash-off time of 5 minutes at room temperature, the coated plate dried at 80 ° C for 30 minutes.
  • Bayblend® T 85 polycarbonate / ABS
  • This mixture is then adjusted to the required millbase viscosity with 1.2 g of n-methylpyrrolidone and 2.4 g of fully demineralized water and ground to a particle size of 10 ⁇ m by means of a bead mill. Then 104 g of a commercially available polyester / polyurethane dispersion (Bayhydrol® PR 340) are added with stirring and the mixture thus obtained after adding 21.4 g of Pergopak® M4 and 6.8 g of a commercially available matting agent (OK 500 from Fa. Degussa) dispersed for 20 minutes. 14.0 g of butylglycol and 14.0 g of fully demineralized water are then added to this mixture with stirring.
  • This lacquer composition is then adjusted to a viscosity of 45 seconds at 20.degree. C. with 5.2 g of deionized water using a DIN B4 beaker.
  • a 75% solution of a commercially available polyisocyanate (Bayhydur® 3100) in solvent seam is easily used as the hardener for this mixture.
  • the pigmented soft feeling varnish described above is applied using a spray gun a plastic sheet made of Bayblen® T 85 (polycarbonate / ABS) with the dimensions 210 * 150 * 3 mm applied so that a dry layer thickness of 60 microns becomes. After a flash-off time of 5 minutes at room temperature, the coating Dried at 80 ° C for 30 minutes.
  • Bayblen® T 85 polycarbonate / ABS
  • the finished coatings are examined in accordance with the tests given in Table 1 for adhesion, climatic resistance, abrasion resistance and care agent resistance.
  • the abrasion resistance is examined with a crock meter with a linen cloth without load both dry and with ethanol.
  • the resistance to care products is examined according to the Mercedes Benz specification DBL 7384, according to which various test solutions (plastic cleaner, tar remover, window cleaner, stain remover) are applied to a square felt (from the company Empa, St. Gallen, Switzerland) with an area of 2.25 cm 2 .
  • the felt, so saturated, is moved back and forth on the test surface with a mass of 332 g using a device (test section: 30 to 50 mm). 170 double strokes are to be completed in 2 minutes.
  • test solutions are then rinsed with deionized water.
  • the remaining surface is assessed.
  • Optics OK liability GT 0
  • Optics OK liability GT 1-2 Crockmeter (dry linen cloth / no load ethanol) 100/10 100/8 Care product resistance DBL 7384 (MB specification)
  • No abrasion visible on the board. No discoloration on the felt.
  • Table 1 clearly shows that the multi-layer coating according to the invention with Softfeel effect significantly improved properties compared to the softfeel varnishes of the Has state of the art.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Cosmetics (AREA)
  • Toys (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)
  • Laminated Bodies (AREA)

Abstract

A multi-layer coating system comprising a first pigmented layer on the substrate and a second unpigmented layer, in which the second layer consists entirely or partly of an unpigmented soft-feel varnish.

Description

Die vorliegende Erfindung betrifft eine Mehrschichtlackierung mit Softfeel-Effekt sowie deren Verwendung.The present invention relates to a multi-layer coating with a soft-feel effect and their use.

Unter der Bezeichnung Softfeelinglacke werden solche Lacke verstanden, die sich durch eine besondere Haptik (Griffigkeit) auszeichnen. Der Softfeel-Effekt beruht dabei wesentlich auf einer Kombination von Brems- und Gleitwirkung. Hierdurch erhält man beim Anfassen eines mit einem Softfeellack beschichteten Gegenstands den Eindruck, einen leder- oder auch samtähnlichen Gegenstand zu berühren, unabhängig von dem eigentlichen Griffgefühl des Substrats.The term soft feeling paints are understood to mean those paints that are characterized by a special feel (grip). The softfeel effect is based essential on a combination of braking and sliding action. This gives one touches an object coated with a softfeel varnish Impression of touching a leather or velvet-like object, regardless of the actual feel of the substrate.

Sofifeelinglacke werden insbesondere für die Lackierung von Kunststoffen und für die Automobilinnenlackierung verwendet.Soft feeling paints are used especially for painting plastics and for Automotive interior painting used.

Die EP-0 669 352 B1 beschreibt Softfeelinglacke auf Polyester/Polyurethan-Basis. Sämtliche Beispiele offenbaren einen Softfeelinglack, der gleichzeitig das Pigment enthält. Eine Anwendung dieses Softfeelinglacks auf einer pigmentierten Beschichtung ist nicht genannt.EP-0 669 352 B1 describes soft-feeling lacquers based on polyester / polyurethane. All Examples reveal a soft feeling lacquer that also contains the pigment. Application of this soft feeling varnish to a pigmented coating is not called.

Ein besonderes Problem der bisher bekannten Softfeelinglacke ist ihr Haftvermögen auf verschiedenen Substraten. Bedingt durch die gummielastischen Eigenschaften eines Softfeelinglacks zeigen solche Beschichtungen auf kritischen Substraten (z.B. auf Kunststoffoberflächen) eine schlechtere Haftung, als vergleichbare Lacke ohne Softfeelingeffekt. Im Bereich der Kunststofflackierung müssen deshalb sehr häufig Haftvermittler eingesetzt werden, um auf diese Weise eine akzeptable Haftung zu erreichen.A particular problem with the soft feeling lacquers known to date is their adhesiveness on different substrates. Due to the rubber-elastic properties of a Soft feeling lacquers show such coatings on critical substrates (e.g. Plastic surfaces) poorer adhesion than comparable paints without a soft feeling effect. Adhesion promoters therefore very often have to be used in the field of plastic painting in order to achieve acceptable liability in this way.

Aufgabe der vorliegenden Erfindung ist die Bereitstellung einer pigmentierten Lackierung mit Softfeel-Effekt sowie deren Verwendung, wobei insbesondere die Haftung und der Softfeel-Effekt gegenüber den bekannten Softfeelinglacken des Standes der Technik verbessert sind. The object of the present invention is to provide a pigmented coating with soft-feel effect and their use, with particular liability and the soft-feel effect compared to the known soft-feeling paints of the prior art Technology are improved.

Diese Aufgabe wird erfindungsgemäß durch eine Mehrschichtlackierung gelöst, bestehend aus einer auf dem Substrat befindlichen, farbgebenden ersten Schicht und einer weiteren, über der ersten Schicht befindlichen, unpigmentierten zweiten Schicht, wobei die zweite Schicht ganz oder teilweise aus einem unpigmentierten Softfeelinglack erhältlich ist.This object is achieved, according to the invention, by a multi-layer coating from a coloring first layer on the substrate and one another unpigmented second layer located above the first layer, the second layer entirely or partially of an unpigmented soft-feeling lacquer is available.

Bei der ersten, farbgebenden Schicht kann es sich prinzipiell um jede Schicht handeln, die durch einen Vernetzungs- oder Aushärtungsvorgang einer pigmentierten Beschichtungszusammensetzung auf Basis von organischen Lösemitteln, Wasser oder Pulver erhältlich ist.The first, coloring layer can in principle be any layer, by a crosslinking or curing process of a pigmented coating composition based on organic solvents, water or powder is available.

Besonders bevorzugt für die Herstellung der ersten, farbgebenden Schicht werden solche Lacke, die als sogenannte

Figure 00020001
Basislacke" für die Mehrschichtlackierung von Automobilrohkarosserien verwendet werden.
Diese Mehrschichtlackierung von Automobilen besteht im allgemeinen aus insgesamt vier voneinander unterschiedlichen Schichten (Electrocoatschicht, Füllerschicht, Basislackschicht und Klarlackschicht).
Dabei ist es die Aufgabe der Basislackschicht, der Karosserie die gewünschte Farbe zu verleihen und eine genau definierte Haftung auf der Füllerschicht bereitzustellen. Letztere Eigenschaft ist besonders wichtig für die Steinschlagfestigkeit eines Autolacks.Varnishes which are known as so-called
Figure 00020001
Basecoats "can be used for the multi-layer coating of car bodies.
This multilayer coating of automobiles generally consists of a total of four different layers (electrocoat layer, filler layer, basecoat layer and clearcoat layer).
It is the task of the basecoat layer to give the body the desired color and to provide a precisely defined adhesion to the filler layer. The latter property is particularly important for the stone chip resistance of a car paint.

Eine bevorzugte Ausführungsform der Erfindung ist die Verwendung eines pigmentierten Lacks auf Wasserbasis zur Ausbildung der ersten, farbgebenden Schicht. Insbesondere vor dem Hintergrund, daß zur Lackierung von Kunststoffen in der Automobilindustrie größtenteils nur Basislacke auf Lösemittelbasis eingesetzt werden, ist mit dieser Ausführungsform eine deutliche Verringerung der Lösemittelemissionen, insbesondere bei Lackierungen auf Kunststoffsubstraten, möglich.
Vorteilhaft ist bei der Verwendung eines farbgebenden Lacks auf Wasserbais eine kurze Zwischentrocknung (z.B. 5 Minuten lang bei 60 °C) vor Auftragung des unpigmentierten Softfeeling-Lacks.A preferred embodiment of the invention is the use of a pigmented water-based lacquer to form the first, color-imparting layer. Particularly in view of the fact that for the most part only solvent-based basecoats are used for painting plastics in the automotive industry, this embodiment makes it possible to significantly reduce solvent emissions, particularly when painting on plastic substrates.
When using a color-imparting lacquer on water based, it is advantageous to briefly dry it (eg for 5 minutes at 60 ° C) before applying the unpigmented soft-feeling lacquer.

Die Trockenschichtdicke hat auf die Eigenschaften der erfindungsgemäßen Mehrschichtlackierung keinen entscheidenden Einfluß, sie liegt üblicherweise in einem Bereich zwischen 12 bis 40 µm. The dry film thickness has the properties of the multi-layer coating according to the invention no decisive influence, it usually lies in one Range between 12 to 40 µm.

Zur Herstellung der zweiten, unpigmentierten Schicht kann jeder Lack verwendet werden, der mindestens ein Bindemittel enthält, das aufgrund seiner speziellen chemischen und physikalischen Eigenschaften dieser Schicht die für den Softfeeling-Effekt notwendigen gummielastischen Eigenschaften verleiht. Solche Bindemittel sind an sich bekannt und werden bereits zur Herstellung pigmentierter Softfeelinglacke verwendet. Die Menge dieses Bindemittels liegt üblicherweise in einem Bereich zwischen 25 und 65 Gew.-%, bezogen auf den Festkörperanteil.
Unter dem Begriff "unpigruentiert" werden solche Lacke oder Beschichtungen verstanden, die keine farbgebenden Pigmente enthalten. Unter den Begriff farbgebenden Pigmente" werden aber nicht Mattierungsmittel verstanden, die üblicherweise Schichtsilikate oder Wachse enthalten.For the production of the second, unpigmented layer, any lacquer can be used which contains at least one binder which, due to its special chemical and physical properties, gives this layer the rubber-elastic properties necessary for the soft-feeling effect. Such binders are known per se and are already used for the production of pigmented soft feeling lacquers. The amount of this binder is usually in a range between 25 and 65% by weight, based on the solids content.
The term "unpigrued" is understood to mean paints or coatings that do not contain any coloring pigments. Under the term color pigments "are not understood as matting agents that usually contain layered silicates or waxes.

Besonders geeignete Bindemittel, die der zweiten Schicht die Sofifeeling-Eigenschaften verleihen, sind solche Bindemittel auf Polyester/Polyurethan-Basis. Diese Bindemittel sind detailliert in dem europäischen Patent 0 669 352 beschrieben und werden von der Firma Bayer AG unter der Handelbezeichnung Bayhydrol® vertrieben.Particularly suitable binders that give the second layer the soft feeling properties confer, such binders are based on polyester / polyurethane. These binders are described in detail in European Patent 0 669 352 and are described by the Bayer AG sold under the trade name Bayhydrol®.

Die erfindungsgemäße Softfeel-Mehrschichtlackierung zeigt eine deutlich verbesserte Haptik gegenüber den pigmentierten Softfeelinglacken des Standes der Technik.The soft-feel multi-layer coating according to the invention shows a significantly improved Haptics compared to the pigmented soft feeling lacquers of the prior art.

Entscheidend für die verbesserten Softfeeling-Eigenschaften der erfindungsgemäßen Mehrschichtlackierung ist die Trennung von Bindemitteln, die für den eigentlichen Softfeeling-Effekt verantwortlich sind, und dem oder den farbgebenden Pigmenten.Crucial for the improved soft feeling properties of the invention Multi-layer painting is the separation of binders, which is for the actual Soft feeling effect are responsible, and the coloring pigment (s).

Die Trockenschichtdicke der zweiten Schicht liegt üblicherweise in einem Bereich zwischen 15 bis 60 µm.
Im allgemeinen gilt, daß der Softfeeling-Effekt umso deutlicher wird, je dicker die Trockenschichtdicke ist.The dry layer thickness of the second layer is usually in a range between 15 to 60 μm.
In general, the thicker the dry layer thickness, the clearer the soft feeling effect becomes.

Eine weitere, erfindungsgemäße Ausführungsform ist die Verwendung eines Mattierungsmittels in der zweiten, unpigmentierten Schicht. Dies bewirkt eine Steigerung in der Bremswirkung der fertigen Lackschicht. Auf diese Weise ist es möglich, die genaue Brems- und Gleitwirkung der erfindungsgemäßen Mehrschichtlackierung einzustellen.Another embodiment of the invention is the use of a matting agent in the second, unpigmented layer. This causes an increase in the braking effect of the finished paint layer. This way it is possible to get the exact one Adjust braking and sliding effect of the multi-layer coating according to the invention.

Besonders bevorzugt eignet sich die erfindungsgemäße Mehrschichtlackierung für die Lackierung von Kunststoffoberflächen, insbesondere von Teilen der Automobilinnenverkleidung. Insbesondere für letzteren Bereich ist von besonderem Vorteil, daß Teile der Innenraumverkleidungen mit dem gleichen Lack und den gleichen Vorrichtungen beschichtet werden können, wie Kunststoffanbauteile (beispielsweise Stoßfänger). Die folgenden Beispiele dienen der Erläuterung der Erfindung:The multilayer coating according to the invention is particularly preferably suitable for the Painting of plastic surfaces, especially of parts of the automotive interior trim. It is particularly advantageous for the latter area that parts of the interior panels with the same paint and the same devices can be coated, such as plastic attachments (e.g. bumpers). The following examples serve to illustrate the invention:

Beispiele:Examples: Herstellung eines Basislacks:Production of a basecoat:

In einen Kunststoffbecher mit Rührvorrichtung werden 80,0 g einer handelsüblichen Polyurethandispersion (Bayhydrol® 2952 E) vorgelegt und anschließend 20,0 g vollentsalztes Wasser, 20,0 g Butylglykol, 12,0 g Disperbyk® 190, 5,2 g Titandioxid Kronos 2310, 4,4 g Irgazin® DPP rot BO und 2,5 g Sicotangelb L 1910 unter Rühren zugegeben. Dann werden 20 g vollentsalztes Wasser zur Einstellung der Mahlgutviskosität hinzugegeben. Der pH-Wert wird durch Zugabe von Amietol® M21 auf einen pH-Wert von 8 eingestellt. Die so erhaltene Mischung wird in einer Perlmühle bis zu einer Körnigkeit von 5 µm gemahlen.
Dann werden zu der Mischung 100 g eines handelsüblichen Verdickers (Viscalex® HV 30 Paste 3 %) und 60,0 g vollentsalztes Wasser hinzugegeben. Anschließend werden 40 g einer handelsüblichen Polyurethandispersion (Bayhydrol® 2952 E) unter Rühren hinzugegeben.
Der so hergestellte Basislack wird mit Amietol® M21 auf einen pH-Wert von 8 und die Viskosität durch Zugabe von vollentsalztem Wasser auf 35 Sekunden bei 20 °C, gemessen mit einem DIN-B4-Becher, eingestellt.80.0 g of a commercially available polyurethane dispersion (Bayhydrol® 2952 E) are placed in a plastic beaker with a stirring device, followed by 20.0 g of fully demineralized water, 20.0 g of butylglycol, 12.0 g of Disperbyk® 190, 5.2 g of Kronos 2310 titanium dioxide , 4.4 g of Irgazin® DPP red BO and 2.5 g of Sicotan yellow L 1910 are added with stirring. Then 20 g of fully demineralized water are added to adjust the millbase viscosity. The pH is adjusted to 8 by adding Amietol® M21. The mixture obtained in this way is ground in a bead mill to a granularity of 5 μm.
Then 100 g of a commercially available thickener (Viscalex® HV 30 Paste 3%) and 60.0 g of fully demineralized water are added to the mixture. Then 40 g of a commercially available polyurethane dispersion (Bayhydrol® 2952 E) are added with stirring.
The basecoat produced in this way is adjusted to a pH of 8 using Amietol® M21 and the viscosity is adjusted to 35 seconds at 20 ° C., measured with a DIN B4 beaker, by adding demineralized water.

Herstellung eines unpigmentierten Softfeelinglacks:Production of an unpigmented soft feeling varnish:

In einen Kunststoffbecher mit Rührvorrichtung werden 44,8 g einer handelsüblichen Polyurethandispersion (Bayhydrol® PT 241) vorgelegt und 1,2 g Surfinol® 104 E unter Rühren zugegeben. Dann werden dieser Mischung 2,4 g Butyldiglykolacetat, 13,2 g n-Merhylpyrrolidon und 20,8 g vollentsalztes Wasser sowie 144 g einer handelsüblichen Polyurethanharzdispersion (Bayhydrol® PR 340) und 40,0 g eines handelsüblichen Verdickers (Viscalex® HV 30 Paste 3 %) hinzugegeben. Diese Mischung wird nach Zugabe von 21,4 g Pergopak® M4 und 6,8 g eines handelsüblichen Mattierungsmittels (OK 500 von der Firma Degussa) 20 Minuten lang dispergiert. Danach werden dieser Mischung 14,0 g Butylglykol und 14,0 g vollentsalztes Wasser hinzugegeben. Nach weiterer Zugabe von 62,8 g einer handelsüblichen Polyester/Polyurethan-Dispersion (Bayhydrol® PR 240) unter Rühren wird die Viskosität mit vollentsalztem Wasser auf 45 Sekunden bei 20 °C, gemessen mit einem DIN-B4-Becher, eingestellt. Als Härter wird eine 75 %ige Lösung eines handelsüblichen Polyisocyanats (Bayhydur® 3100) in Solventnaphtha leicht verwendet.44.8 g of a commercially available one are placed in a plastic beaker with a stirring device Polyurethane dispersion (Bayhydrol® PT 241) submitted and 1.2 g Surfinol® 104 E under Stir added. Then this mixture is 2.4 g of butyl diglycol acetate, 13.2 g of n-merpyrrolidone and 20.8 g of fully demineralized water and 144 g of a commercially available Polyurethane resin dispersion (Bayhydrol® PR 340) and 40.0 g of a commercially available Thickener (Viscalex® HV 30 Paste 3%) added. This mixture is after Add 21.4 g Pergopak® M4 and 6.8 g of a commercially available matting agent (OK 500 from Degussa) dispersed for 20 minutes. After that, this Mixture 14.0 g butyl glycol and 14.0 g demineralized water are added. To further addition of 62.8 g of a commercially available polyester / polyurethane dispersion (Bayhydrol® PR 240) with stirring, the viscosity is reduced to 45 with deionized water Seconds at 20 ° C, measured with a DIN B4 cup. A 75% solution of a commercially available polyisocyanate (Bayhydur® 3100) slightly used in solvent naphtha.

Beispiel 1example 1 Herstellung der Mehrschichtlackierung:Production of the multi-layer coating:

Der zuvor beschriebene Basislack wird mittels einer Spritzpistole auf eine Kunststoffplatte aus Bayblend® T 85 (Polycarbonat/ABS) mit den Abmessungen 210 * 150 * 3 mm appliziert, so daß eine Trockenschichtstärke von 15 µm erhalten wird. Dann wird diese Schicht 2 Minuten lang bei Raumtemperatur abgelüfret und anschließend 4 Minuten lang bei 80 °C getrocknet. Danach wird der zuvor beschriebene Softfeeling-Klarlack mittels einer Spritzpistole aufgetragen, so daß eine Trockenschichtstärke von 55 µm erhalten wird. Nach einer Ablüftzeit von 5 Minuten bei Raumtemperatur wird die beschichtete Platte 30 Minuten lang bei 80 °C getrocknet.The basecoat described above is applied to a plastic plate using a spray gun made of Bayblend® T 85 (polycarbonate / ABS) with the dimensions 210 * 150 * 3 mm applied so that a dry layer thickness of 15 microns is obtained. Then this one Coat the layer for 2 minutes at room temperature and then 4 minutes dried long at 80 ° C. Then the soft feeling clear coat described above applied by means of a spray gun, so that a dry layer thickness of 55 microns is obtained. After a flash-off time of 5 minutes at room temperature, the coated plate dried at 80 ° C for 30 minutes.

Herstellung eines pigmentierten Softfeelinglacks (für Vergleichsbeisplel):Production of a pigmented soft feeling varnish (for comparison example):

In einen Kunststoffbecher mit Rührvorrichtung werden 45,2 g eines handelsüblichen Polyurethanharzes (Bayhydrol® PT 241) vorgelegt und 4,0 g Disperbyk® 180 und 1,2 g Surfinol® 104 E unter Rühren zugegeben. Diesem Gemisch werden anschließend 2,4 g Butyldiglykolacetat, 6,4 g vollentsalztes Wasser, 2,0 g Aerosil R 972, 5,6 g Titandioxid Kronos 2310, 10,0 g Sicotangelb L 1910, 4,4 g Irgazin® DPP rot BO, 6,0 g Talkum IT Extra und 13,6 g Silitine® Z 86 unter Rühren zugegeben. Diese Mischung wird anschließend mit 1,2 g n-Methylpyrrolidon und 2,4 g vollentsalztem Wasser auf die erforderliche Mahlgutviskosität eingestellt und auf eine Körnigkeit von 10 µm mittels einer Perlmühle gemahlen. Dann werden 104 g einer handelsüblichen Polyester/Polyurethan-Dispersion (Bayhydrol® PR 340) unter Rühren hinzugegeben und das so erhaltene Gemisch nach Zusatz von 21,4 g Pergopak® M4 und 6,8 g eines handelsüblichen Mattierungsmittels (OK 500 von der Fa. Degussa) 20 Minuten lang dispergiert. Dieser Mischung werden anschließend 14,0 g Butylglykol und 14,0 g vollentsalztes Wasser unter Rühren hinzugegeben. Diese Lackzusammensetzung wird anschließend mit 5,2 g vollentsalztem Wasser auf eine Viskosität von 45 Sekunden bei 20 °C gemessen mit einem DIN-B4-Becher, eingestellt.
Als Härter für diese Mischung wird eine 75 %ige Lösung eines handelsüblichen Polyisocyanats (Bayhydur® 3100) in Solventnahptha leicht verwendet.45.2 g of a commercially available polyurethane resin (Bayhydrol® PT 241) are placed in a plastic beaker with a stirring device, and 4.0 g Disperbyk® 180 and 1.2 g Surfinol® 104 E are added with stirring. This mixture is then mixed with 2.4 g of butyl diglycol acetate, 6.4 g of fully demineralized water, 2.0 g of Aerosil R 972, 5.6 g of Kronos 2310 titanium dioxide, 10.0 g of Sicotan yellow L 1910, and 4.4 g of Irgazin® DPP red BO , 6.0 g of talc IT Extra and 13.6 g of Silitine® Z 86 are added with stirring. This mixture is then adjusted to the required millbase viscosity with 1.2 g of n-methylpyrrolidone and 2.4 g of fully demineralized water and ground to a particle size of 10 μm by means of a bead mill. Then 104 g of a commercially available polyester / polyurethane dispersion (Bayhydrol® PR 340) are added with stirring and the mixture thus obtained after adding 21.4 g of Pergopak® M4 and 6.8 g of a commercially available matting agent (OK 500 from Fa. Degussa) dispersed for 20 minutes. 14.0 g of butylglycol and 14.0 g of fully demineralized water are then added to this mixture with stirring. This lacquer composition is then adjusted to a viscosity of 45 seconds at 20.degree. C. with 5.2 g of deionized water using a DIN B4 beaker.
A 75% solution of a commercially available polyisocyanate (Bayhydur® 3100) in solvent seam is easily used as the hardener for this mixture.

VergleichsbeispielComparative example Applikation des pigmentierten Softfeelinglackes:Application of the pigmented soft feeling varnish:

Der zuvor beschriebene pigmentierte Softfeelinglack wird mittels einer Spritzpistole auf eine Kunststoffplatte aus Bayblen® T 85 (Polycarbonat/ABS) mit den Abmessungen 210 * 150 * 3 mm appliziert, so daß eine Trockenschichtdicke von 60 µm erhalten wird. Nach einer Ablüftzeit von 5 Minuten bei Raumtemperatur wird die Beschichtung 30 Minuten lang bei 80 °C getrocknet.The pigmented soft feeling varnish described above is applied using a spray gun a plastic sheet made of Bayblen® T 85 (polycarbonate / ABS) with the dimensions 210 * 150 * 3 mm applied so that a dry layer thickness of 60 microns becomes. After a flash-off time of 5 minutes at room temperature, the coating Dried at 80 ° C for 30 minutes.

Prüfung der Softfeeling-EigenschaftenTesting the soft feeling properties

Die fertigen Beschichtungen werden entsprechend den in der Tabelle 1 angegebenen Versuchen auf Haftung, Klimabeständigkeit, Abriebsbeständigkeit und Pflegemittelbeständigkeit untersucht.
Die Abriebsbeständigkeit wird mit einem Crockmeter mit einem Leinentuch ohne Belastung sowohl trocken als auch mit Ethanol untersucht.
Die Pflegemittelbeständigkeit wird nach der Mercedes Benz-Spezifikation DBL 7384 untersucht, demnach verschiedene Prüflösungen (Plastikreiniger, Teerentferner Scheibenreiniger, Fleckenentferner) auf einen quadratischen Filz (von der Firma Empa, St. Gallen, Schweiz) mit einer Fläche von 2,25 cm2 aufgebracht. Der so gut durchtränkte Filz wird unter einer Masse von 332 g auf der Prüffläche mittels einer Vorrichtung hin-und herbewegt (Prüfstrecke: 30 bis 50 mm). Dabei sollen in 2 Minuten 170 Doppelhübe absolviert werden. Danach werden die Prüflösungen mit vollentsalztem Wasser abgespült. Die verbleibende Oberfläche wird beurteilt. Beispiel Vergleichsbeispiel Haptik/Softfeeleffekt 1 3 Filmoptik i.O. i.O. Haftung auf Bayblend T 85 Gitterschnitt nach DIN 53151 mit Klebebandabriß GT 0 GT 1 Klimatest nach DIN 50017 (10 d, 40 °C, 95 % rel.F. Abmusterung nach 1 h Regenerationszeit) Optik: i.O Haftung GT 0 Optik: i.O. Haftung GT 1-2 Crockmeter (Leinentuch trocken/Ethanol ohne Belastung) 100/10 100/8 Pflegemittelbeständigkeit DBL 7384 (MB-Spezifikation) Kein Abrieb auf der Tafel sichtbar. Keine Verfärbung auf dem Filz. Kein Abrieb auf der Tafel sichtbar. Verfärbung bei Plastikreiniger und Teerentferner auf dem Fliz. The finished coatings are examined in accordance with the tests given in Table 1 for adhesion, climatic resistance, abrasion resistance and care agent resistance.
The abrasion resistance is examined with a crock meter with a linen cloth without load both dry and with ethanol.
The resistance to care products is examined according to the Mercedes Benz specification DBL 7384, according to which various test solutions (plastic cleaner, tar remover, window cleaner, stain remover) are applied to a square felt (from the company Empa, St. Gallen, Switzerland) with an area of 2.25 cm 2 . The felt, so saturated, is moved back and forth on the test surface with a mass of 332 g using a device (test section: 30 to 50 mm). 170 double strokes are to be completed in 2 minutes. The test solutions are then rinsed with deionized water. The remaining surface is assessed. example Comparative example Haptic / soft feel effect 1 3rd Film optics OK OK Adhesion to Bayblend T 85 cross cut according to DIN 53151 with adhesive tape tear GT 0 GT 1 Climatic test according to DIN 50017 (10 d, 40 ° C, 95% rel.F. sampling after 1 h regeneration time) Optics: OK liability GT 0 Optics: OK liability GT 1-2 Crockmeter (dry linen cloth / no load ethanol) 100/10 100/8 Care product resistance DBL 7384 (MB specification) No abrasion visible on the board. No discoloration on the felt. No abrasion visible on the board. Discoloration of plastic cleaners and tar removers on the fliz.

Die Tabelle 1 zeigt deutlich, daß die erfindungsgemäße Mehrschichtlackierung mit Softfeel-Effekt deutlich verbesserte Eigenschaften gegenüber den Softfeellacken des Standes der Technik aufweist.Table 1 clearly shows that the multi-layer coating according to the invention with Softfeel effect significantly improved properties compared to the softfeel varnishes of the Has state of the art.

Claims (7)

Mehrschichtlackierung, bestehend aus einer auf einem Substrat befindlichen farbgebenden ersten Schicht und einer weiteren, über der ersten Schicht befindlichen, unpigmentierten zweiten Schicht, dadurch gekennzeichnet, daß die zweite Schicht ganz oder teilweise aus einem unpigmentierten Softfeelinglack erhältlich ist.Multi-layer coating, consisting of a color-providing on a substrate first layer and a further layer located above the first layer unpigmented second layer, characterized in that the second All or part of the layer is available from an unpigmented soft feeling varnish is. Mehrschichtlackierung nach Anspruch 1, dadurch gekennzeichnet, daß die erste Schicht aus einem pigmentierten Lack auf Wasserbasis erhältlich ist.Multi-layer coating according to claim 1, characterized in that the first Layer of a pigmented water-based varnish is available. Mehrschichtlackierung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die erste Schicht aus einem 2-Komponenten Lack erhältlich ist.Multi-layer coating according to claim 1 or 2, characterized in that the first layer of a 2-component paint is available. Mehrschichtlackierung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die zweite Schicht ein Bindemittel auf Polyester/Polyurethan-Basis enthält.Multi-layer coating according to one of the preceding claims, characterized characterized in that the second layer is a binder based on polyester / polyurethane contains. Mehrschichtlackierung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die zweite Schicht zusätzlich ein Mattierungsmittel enthält.Multi-layer coating according to one of the preceding claims, characterized characterized in that the second layer additionally contains a matting agent. Mehrschichtlackierung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Substrat eine Kunststoffoberfläche ist.Multi-layer coating according to one of the preceding claims, characterized characterized in that the substrate is a plastic surface. Verwendung einer Mehrschichtlackierung nach einem der vorhergehenden Ansprüche für die Innenraumausstattung von Automobilkarosserien.Use of a multi-layer coating according to one of the preceding Requirements for the interior of automobile bodies.
EP00103045A 1999-03-31 2000-02-15 Soft feeling multi-layer coating Revoked EP1040875B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914807A DE19914807C1 (en) 1999-03-31 1999-03-31 Multilayer coating system with soft-feel effect, e.g. for interior plastic parts in cars, comprises pigmented basecoat and pigmented soft-feel topcoat
DE19914807 1999-03-31

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EP1040875A2 true EP1040875A2 (en) 2000-10-04
EP1040875A3 EP1040875A3 (en) 2004-05-26
EP1040875B1 EP1040875B1 (en) 2007-09-12

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AT (1) ATE372834T1 (en)
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US10829664B2 (en) 2019-03-15 2020-11-10 Ppg Industries Ohio, Inc. Coating compositions containing polythioethers and elastic barrier coatings formed therefrom
US10836924B2 (en) 2019-03-15 2020-11-17 Ppg Industries Ohio, Inc. Coating compositions and elastic barrier coatings formed therefrom

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DE102004049592A1 (en) * 2004-10-12 2006-05-04 Bayer Materialscience Ag Soft-touch lacquer-coated, deformable plastic composite films and plastic composite elements and their production
US9523021B2 (en) 2014-04-25 2016-12-20 Ppg Industries Ohio, Inc. Waterborne coating compositions for soft touch coatings
US10865326B2 (en) 2017-09-20 2020-12-15 Ppg Industries Ohio, Inc. Coating compositions, elastic barrier coatings formed therefrom, and methods of applying such coatings
CN113174111B (en) * 2021-05-26 2022-09-02 广州华邦电器工业有限公司 Modified ABS resin with good heat resistance and flame retardance and preparation method thereof

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EP0382513A2 (en) * 1989-02-07 1990-08-16 Steelcase Inc. Panel manufacture and processors for use therein
EP0669352A1 (en) * 1994-02-25 1995-08-30 Bayer Ag Aqueous polyester-polyurethane dispersions and their use in coating compositions

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EP0382513A2 (en) * 1989-02-07 1990-08-16 Steelcase Inc. Panel manufacture and processors for use therein
EP0669352A1 (en) * 1994-02-25 1995-08-30 Bayer Ag Aqueous polyester-polyurethane dispersions and their use in coating compositions

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US10829664B2 (en) 2019-03-15 2020-11-10 Ppg Industries Ohio, Inc. Coating compositions containing polythioethers and elastic barrier coatings formed therefrom
US10836924B2 (en) 2019-03-15 2020-11-17 Ppg Industries Ohio, Inc. Coating compositions and elastic barrier coatings formed therefrom

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EP1040875A3 (en) 2004-05-26
DE50014640D1 (en) 2007-10-25
EP1040875B1 (en) 2007-09-12
ATE372834T1 (en) 2007-09-15
DE19914807C1 (en) 2000-06-29
ES2296577T3 (en) 2008-05-01

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