EP1040875B1 - Soft feeling multi-layer coating - Google Patents
Soft feeling multi-layer coating Download PDFInfo
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- EP1040875B1 EP1040875B1 EP00103045A EP00103045A EP1040875B1 EP 1040875 B1 EP1040875 B1 EP 1040875B1 EP 00103045 A EP00103045 A EP 00103045A EP 00103045 A EP00103045 A EP 00103045A EP 1040875 B1 EP1040875 B1 EP 1040875B1
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- layer
- soft
- multilayer coating
- pigmented
- feel
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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
- B05D7/53—Base coat plus clear coat type
Definitions
- the present invention relates to a multi-layer coating with softfeel effect and their use.
- soft-feel varnishes are understood as those varnishes that are characterized by a special feel (grip).
- the softfeel effect is based essentially on a combination of braking and sliding action.
- Soft-feeling paints are used in particular for the coating of plastics and for automotive interior painting.
- the EP-0 669 352 B1 describes Softfeelinglacke polyester / polyurethane-based. All examples disclose a soft-feel varnish that also contains the pigment. An application of this Softfeelinglacks on a pigmented coating is not mentioned.
- Softfeelinglacke A particular problem of the previously known Softfeelinglacke is their adhesion to various substrates. Due to the rubber-elastic properties of a Softfeelinglacks show such coatings on critical substrates (eg on plastic surfaces) a worse adhesion, than comparable paints without soft feeling effect. In the field of plastic painting, it is therefore very often necessary to use adhesion promoters in order to achieve acceptable adhesion in this way.
- the object of the present invention is to provide a pigmented finish with a soft feel effect and the use thereof, wherein in particular the adhesion and the soft feel effect are improved compared with the known soft feel lacquers of the prior art.
- this object is achieved by a multicoat system consisting of a first layer of color on the substrate and another layer of unpigmented second layer above the first layer, the second layer being wholly or partially obtainable from an unpigmented soft-feel finish.
- the first coloring layer may be any layer obtainable by a crosslinking or curing process of a pigmented coating composition based on organic solvents, water or powder.
- coloring layer Particularly preferred for the preparation of the first, coloring layer are those paints which are used as so-called “basecoats” for the multi-layer coating of Automobilrohkarosserien.
- This multi-layer coating of automobiles generally consists of four different layers (electrocoating layer, surfacer 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 well-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 water-based pigmented lacquer to form the first coloring layer.
- a water-based pigmented lacquer to form the first coloring layer.
- the dry layer thickness has no decisive influence on the properties of the multicoat system according to the invention; it is usually in a range between 12 and 40 .mu.m.
- any lacquer which contains at least one binder which, due to its special chemical and physical properties, imparts the rubber-elastic properties necessary for the soft-feeling effect to this layer.
- binders are known per se and are already used for the production of pigmented soft-feel coatings.
- the amount of this binder is usually in a range between 25 and 65 wt .-%, based on the solids content.
- unpigmented is understood to mean those coatings or coatings which contain no coloring pigments.
- coloring pigments does not mean matting agents which usually contain phyllosilicates or waxes.
- Particularly suitable binders imparting soft feel properties to the second layer are those polyester / polyurethane based binders. These binders are detailed in the European Patent 0 669 352 described and sold by Bayer AG under the tradename Bayhydrol ®.
- the soft-feel multi-layer coating according to the invention shows a significantly improved feel compared to the pigmented soft-feel coatings of the prior art.
- the dry layer thickness of the second layer is usually in a range between 15 to 60 microns. In general, the thicker the dry film thickness, the more pronounced the soft feel 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. In this way it is possible to adjust the exact braking and sliding action of the multicoat system according to the invention.
- the multicoat system according to the invention is suitable for the coating of plastic surfaces, in particular of parts of the automobile interior trim.
- parts of the interior linings can be coated with the same paint and the same devices as plastic attachments (such as bumpers).
- the basecoat described above is 85 by means of a spray gun onto a plastic plate made of Bayblend ® T 150 * applied (polycarbonate / ABS) with the dimensions 210 * 3 mm, so that a dry film thickness of 15 microns is obtained. Then, this layer is flashed for 2 minutes at room temperature and then dried at 80 ° C for 4 minutes. Thereafter, the soft-feel clearcoat described above is applied by means of a spray gun, so that a dry film thickness of 55 microns is obtained. After a flash off time of 5 minutes at room temperature, the coated plate is dried at 80 ° C for 30 minutes.
- This mixture is then adjusted with 1.2 g of n-methylpyrrolidone and 2.4 g of deionized water to the required Mahlgutviscosity and ground to a granularity of 10 .mu.m by means of a bead mill.
- 104 g of a commercial polyester / polyurethane dispersion (Bayhydrol ® PR 340) are added with stirring and the resulting mixture after addition of 21.4 g of Pergopak ® M4 and 6.8 g of a commercially available matting agent (OK 500 from the Fa. Degussa) for 20 minutes.
- 14.0 g of butylglycol and 14.0 g of demineralized water are added to this mixture with stirring.
- This paint composition is then adjusted with 5.2 g of deionized water to a viscosity of 45 seconds at 20 ° C measured with a DIN B4 cup.
- the pigmented soft feeling paint described above is 85 by means of a spray gun onto a plastic plate made of Bayblend ® T 150 * applied (polycarbonate / ABS) with the dimensions 210 * 3 mm, so that a dry film thickness obtained of 60 microns. After a flash off time of 5 minutes at room temperature, the coating is dried at 80 ° C for 30 minutes.
- the finished coatings are tested according to the tests specified in Table 1 for adhesion, climatic resistance, abrasion resistance and care agent resistance.
- the abrasion resistance is examined with a Crockmeter with a linen cloth without load both dry and with ethanol.
- the care product resistance 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 so well soaked felt is reciprocated under a mass of 332 g on the test surface by means of a device (test track: 30 to 50 mm). It should be completed in 2 minutes 170 double strokes.
- Table 1 clearly shows that the multi-layer coating according to the invention with softfeel effect has markedly improved properties in comparison to the softfeel lacquers of the prior art.
Abstract
Description
Die vorliegende Erfindung betrifft eine Mehrschichtlackierung mit Softfeel-Effekt sowie deren Verwendung.The present invention relates to a multi-layer coating with softfeel 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-feel varnishes are understood as those varnishes that are characterized by a special feel (grip). The softfeel effect is based essentially on a combination of braking and sliding action. As a result, when touching a soft-feel lacquer-coated object, one gets the impression of touching a leather-like or also velvet-like object, independently of the actual feeling of touch of the substrate.
Softfeelinglacke werden insbesondere für die Lackierung von Kunststoffen und für die Automobilinnenlackierung verwendet.Soft-feeling paints are used in particular for the coating of plastics and for automotive interior painting.
Die
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 of the previously known Softfeelinglacke is their adhesion to various substrates. Due to the rubber-elastic properties of a Softfeelinglacks show such coatings on critical substrates (eg on plastic surfaces) a worse adhesion, than comparable paints without soft feeling effect.
In the field of plastic painting, it is therefore very often necessary to use adhesion promoters in order to achieve acceptable adhesion 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 finish with a soft feel effect and the use thereof, wherein in particular the adhesion and the soft feel effect are improved compared with the known soft feel lacquers of the prior art.
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.According to the invention, this object is achieved by a multicoat system consisting of a first layer of color on the substrate and another layer of unpigmented second layer above the first layer, the second layer being wholly or partially obtainable from an unpigmented soft-feel finish.
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.In principle, the first coloring layer may be any layer obtainable by a crosslinking or curing process of a pigmented coating composition based on organic solvents, water or powder.
Besonders bevorzugt für die Herstellung der ersten, farbgebenden Schicht werden solche Lacke, die als sogenannte "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.Particularly preferred for the preparation of the first, coloring layer are those paints which are used as so-called "basecoats" for the multi-layer coating of Automobilrohkarosserien.
This multi-layer coating of automobiles generally consists of four different layers (electrocoating layer, surfacer 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 well-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 water-based pigmented lacquer to form the first coloring layer. In particular, against the background that for the painting of plastics in the automotive industry mostly only solvent-based basecoats are used, a significant reduction of the solvent emissions, especially in coatings on plastic substrates, is possible with this embodiment.
It is advantageous when using a coloring paint on Wasserbais a short intermediate drying (eg 5 minutes at 60 ° C) before application of the unpigmented soft-feeling paint.
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 layer thickness has no decisive influence on the properties of the multicoat system according to the invention; it is usually in a range between 12 and 40 .mu.m.
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 "unpigmentiert" 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.To produce the second, unpigmented layer, it is possible to use any lacquer which contains at least one binder which, due to its special chemical and physical properties, imparts the rubber-elastic properties necessary for the soft-feeling effect to this layer. Such binders are known per se and are already used for the production of pigmented soft-feel coatings. The amount of this binder is usually in a range between 25 and 65 wt .-%, based on the solids content.
The term "unpigmented" is understood to mean those coatings or coatings which contain no coloring pigments. However, the term "coloring pigments" does not mean matting agents which usually contain phyllosilicates or waxes.
Besonders geeignete Bindemittel, die der zweiten Schicht die Softfeeling-Eigenschaften verleihen, sind solche Bindemittel auf Polyester/Polyurethan-Basis. Diese Bindemittel sind detailliert in dem
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 feel compared to the pigmented soft-feel coatings 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.Decisive for the improved soft feel properties of the multicoat system according to the invention is the separation of binders which are responsible for the actual soft feel effect 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 microns.
In general, the thicker the dry film thickness, the more pronounced the soft feel 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. In this way it is possible to adjust the exact braking and sliding action of the multicoat system 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:More preferably, the multicoat system according to the invention is suitable for the coating of plastic surfaces, in particular of parts of the automobile interior trim. In particular, for the latter area is of particular advantage that parts of the interior linings can be coated with the same paint and the same devices as plastic attachments (such as bumpers). The following examples serve to illustrate the invention:
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.In a plastic beaker with stirring 80.0 g of a commercial polyurethane dispersion (Bayhydrol ® 2952 e) are initially introduced and then 20.0 g of deionized water, 20.0 g of butyl glycol, 12.0 g of Disperbyk ® 190, 5.2 g titanium dioxide Kronos 2310 , 4.4 g Irgazin ® DPP red BO and 2.5 g Sicotangelb L 1910 added with stirring. Then, 20 g of deionized water are added to adjust the millbase viscosity. The pH is adjusted by addition of Amietol ® M21 at a pH of. 8 The mixture thus obtained is ground in a bead mill to a granularity of 5 microns.
Then, to the mixture 100 g of a commercially available thickener are added (Viscalex HV ® 30 Paste 3%) and 60.0 g of deionized water. Subsequently, 40 g of a commercial polyurethane dispersion (Bayhydrol ® 2952 e) was added under stirring.
The base coat thus produced is adjusted with Amietol ® M21 at a pH of 8 and the viscosity by the addition of deionized water to 35 seconds at 20 ° C, measured with a DIN-B4 cup.
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-Methylpyrrolidon 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.In a plastic beaker with stirring 44.8 g of a commercial polyurethane dispersion (Bayhydrol ® PT 241) are initially introduced and 1.2 g Surfinol ® E 104 is added with stirring. Then, this mixture 2.4 g butyl diglycol acetate, 13.2 g of n-methylpyrrolidone and 20.8 g of deionized 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%). This mixture, after addition of 21.4 g Pergopak ® M4 and 6.8 g of a commercially available dulling agent (OK 500 from Degussa) was dispersed for 20 minutes. Thereafter, to this mixture are added 14.0 g of butylglycol and 14.0 g of demineralized water. To with further addition of 62.8 g of a commercial polyester / polyurethane dispersion (Bayhydrol® PR 240) with stirring, the viscosity is adjusted with demineralized water to 45 seconds at 20 ° C, measured with a DIN B4 cup.
As the curing agent is easily used in solvent naphtha is a 75% solution of a commercial polyisocyanate (Bayhydur ® 3100).
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 abgelüftet 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 85 by means of a spray gun onto a plastic plate made of Bayblend ® T 150 * applied (polycarbonate / ABS) with the dimensions 210 * 3 mm, so that a dry film thickness of 15 microns is obtained. Then, this layer is flashed for 2 minutes at room temperature and then dried at 80 ° C for 4 minutes. Thereafter, the soft-feel clearcoat described above is applied by means of a spray gun, so that a dry film thickness of 55 microns is obtained. After a flash off time of 5 minutes at room temperature, the coated plate is dried at 80 ° C for 30 minutes.
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.In a plastic beaker with stirring 45.2 g of a commercially available polyurethane resin (Bayhydrol ® PT 241) are initially introduced and 4.0 g of Disperbyk ® 180 and 1.2 g Surfinol ® E 104 is added with stirring. To this mixture are subsequently 2.4 g butyl diglycol acetate, 6.4 g of deionized water, 2.0 g Aerosil R 972, 5.6 g titanium dioxide Kronos 2310, 10.0 g Sicotangelb L 1910, 4.4 g of Irgazin ® DPP Red BO , 6.0 g talc IT Extra and 13.6 g Silitine ® Z 86 added with stirring. This mixture is then adjusted with 1.2 g of n-methylpyrrolidone and 2.4 g of deionized water to the required Mahlgutviscosity and ground to a granularity of 10 .mu.m by means of a bead mill. Then 104 g of a commercial polyester / polyurethane dispersion (Bayhydrol ® PR 340) are added with stirring and the resulting mixture after addition of 21.4 g of Pergopak ® M4 and 6.8 g of a commercially available matting agent (OK 500 from the Fa. Degussa) for 20 minutes. Thereafter, 14.0 g of butylglycol and 14.0 g of demineralized water are added to this mixture with stirring. This paint composition is then adjusted with 5.2 g of deionized water to a viscosity of 45 seconds at 20 ° C measured with a DIN B4 cup.
Als Härter für diese Mischung wird eine 75 %ige Lösung eines handelsüblichen Polyisocyanats (Bayhydur® 3100) in Solventnahptha leicht verwendet.As hardener for this mixture a 75% solution of a commercial polyisocyanate (Bayhydur 3100 ®) is easily used in Solventnahptha.
Der zuvor beschriebene pigmentierte Softfeelinglack wird mittels einer Spritzpistole auf eine Kunststoffplatte aus Bayblend® 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 paint described above is 85 by means of a spray gun onto a plastic plate made of Bayblend ® T 150 * applied (polycarbonate / ABS) with the dimensions 210 * 3 mm, so that a dry film thickness obtained of 60 microns. After a flash off time of 5 minutes at room temperature, the coating is dried at 80 ° C for 30 minutes.
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.
Wert 2 = guter Softfeel-Effekt
Wert 5 = kein Softfeel-Effekt
The abrasion resistance is examined with a Crockmeter with a linen cloth without load both dry and with ethanol.
The care product resistance 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 so well soaked felt is reciprocated under a mass of 332 g on the test surface by means of a device (test track: 30 to 50 mm). It should be completed in 2 minutes 170 double strokes. Thereafter, the test solutions are rinsed with demineralized water. The remaining surface is assessed.
Value 2 = good softfeel effect
Value 5 = no softfeel effect
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 has markedly improved properties in comparison to the softfeel lacquers of the prior art.
Claims (6)
- Multilayer coating consisting of a colour-imparting first layer present on a substrate and a further non-pigmented second layer present on the first layer characterised in that the second layer consists entirely or in partly of a non-pigmented soft feeling paint which contains a binder based on polyester/polyurethane.
- Multilayer coating according to claim 1 characterised in that the first layer is obtainable from a pigmented water-based paint.
- Multilayer coating according to claim 1 or 2 characterised in that the first layer is obtainable from a 2-component paint.
- Multilayer coating according to one of the preceding claims characterised in that the second layer additionally contains a matting agent.
- Multilayer coating according to one of the preceding claims characterised in that the substrate is a polymer surface.
- Use of a multilayer coating according to one of the preceding claims for the interior trim of motor vehicle bodies.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19914807 | 1999-03-31 | ||
| 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 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1040875A2 EP1040875A2 (en) | 2000-10-04 |
| EP1040875A3 EP1040875A3 (en) | 2004-05-26 |
| EP1040875B1 true EP1040875B1 (en) | 2007-09-12 |
Family
ID=7903203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00103045A Revoked EP1040875B1 (en) | 1999-03-31 | 2000-02-15 | Soft feeling multi-layer coating |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1040875B1 (en) |
| AT (1) | ATE372834T1 (en) |
| DE (2) | DE19914807C1 (en) |
| ES (1) | ES2296577T3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5116639A (en) * | 1989-02-07 | 1992-05-26 | Steelcase Inc. | Monolithic finishing process and machine for furniture parts and the like |
| DE4406159A1 (en) * | 1994-02-25 | 1995-08-31 | Bayer Ag | Aqueous polyester-polyurethane dispersions and their use in coating materials |
-
1999
- 1999-03-31 DE DE19914807A patent/DE19914807C1/en not_active Withdrawn - After Issue
-
2000
- 2000-02-15 ES ES00103045T patent/ES2296577T3/en not_active Expired - Lifetime
- 2000-02-15 DE DE50014640T patent/DE50014640D1/en not_active Expired - Fee Related
- 2000-02-15 EP EP00103045A patent/EP1040875B1/en not_active Revoked
- 2000-02-15 AT AT00103045T patent/ATE372834T1/en not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| None * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE372834T1 (en) | 2007-09-15 |
| EP1040875A3 (en) | 2004-05-26 |
| DE50014640D1 (en) | 2007-10-25 |
| DE19914807C1 (en) | 2000-06-29 |
| EP1040875A2 (en) | 2000-10-04 |
| ES2296577T3 (en) | 2008-05-01 |
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