DE202005007762U1 - Paint spray can kit for producing a leather-like surface comprises an acrylic basecoat paint and a silica-filled acrylic grain effect paint - Google Patents

Abstract

Paint spray can kit for producing a leather-like surface comprises an acrylic basecoat paint in one can and a silica-filled acrylic grain effect paint in another can. Paint spray can kit for producing a leather-like surface comprises a basecoat paint in one can and a grain effect paint in another can. The basecoat paint comprises 10-18 wt.% acrylic resin (methyl methacrylate/butyl methacrylate), 25.2-30.8 wt.% butyl acetate, 17.1-20.9 wt.% methyl isobutyl ketone, 5.4-6.6 wt.% aromatic hydrocarbons, 27.9-34.1 wt.% pigment paste and 2.7-3.3 wt.% additives (plasticizer and stabilizers) and the grain effect paint comprises 8-12 wt.% acrylic resin (methyl methacrylate/butyl methacrylate), 36.9-45.1 wt.% butyl acetate, 14.4-17.6 wt.% methyl isobutyl ketone, 6.3-7.7 wt.% aromatic hydrocarbons, 5.4-6.6 wt.% methyl ethyl ketone 9-11 wt.% pigment paste, 7.2-8.8 wt.% precipitated silica and 1.8-2.2 wt.% additives (plasticizer and stabilizers).

Description

The The present invention relates to a paint spray can set for producing a paint spray can Imitation leather surface.

From the DE 102 22 116 A1 For example, a method for producing a leather imitation surface is known. There, a scar structure for imitating a leather surface is produced with the aid of an intermediate layer causing a crack formation on a primer layer. In order to achieve different shades and thus a natural leather look, mainly a fine color match between primer shade and interlayer shade is used. This fine color difference appears depending on the amount of application of the top layer and improves the leather look.

Furthermore, from the DE 296 13 266 U1 also a coating system on Reißlackbasis imitation leather known. The binder resin of the base coat is an alkyd resin-acrylic resin blend while the top coat is based on an aqueous medium of emulsified acrylate resin or polyurethane resin or a mixture of both resin binders. In addition, a final coating can also be done.

Furthermore, a description of the inventor (see DE 20 2004 018468 ) a paint spray can set that is used to make a leather imitation surface.

The known methods have proven very well and offer a whole range of different applications. However, some of these methods still require some know-how, which is why the use of this method was mainly reserved for industrial applications. The DE 20 2004 018468 already offers starting points in this direction.

It It is therefore the object of the present invention to provide a system for To provide a leather imitation surface, too can be used in the crafts and hobby area.

For this purpose, according to the invention, a lacquer spray can set for producing a leather imitation surface is provided, which consists of a first spray can containing a primer varnish and a second spray can containing an effect varnish forming a scar structure. The primer coating comprises the following composition (in weight percent):
10-18% acrylic resin (BMA / MMA) as a binder;
25.2-30.8% butyl acetate,
17.1-20.9% methyl isobutyl ketone and
5.4-6.6% aromat. Hydrocarbons as solvent combination;
27.9-34.1% pigment paste; and
2.7-3.3% plasticizer and stabilizer (s) as additives.

The effect varnish comprises the following composition (in percent by weight):
8-12% acrylic resin (BMA / MMA) as a binder;
36.9-45.1% butyl acetate,
14.4-17.6% methyl isobutyl ketone,
6.3-7.7% aromat. Hydrocarbons and
5.4-6.6% methyl ethyl ketone as a solvent combination;
9-11% pigment paste;
7.2-8.8% silica (precipitated variant); and
1.8-2.2% plasticizers and stabilizers) as additives.

By the one chosen here Composition of primer varnish and effect varnish comes this System for many purposes in home improvement and hobby without a third cover layer out. The primer is therefore a one-component, physically drying paint, which due to its solvent selection a very quick drying allows. The solid after curing is about 30-34% (depending on the shade). Of the Effect paint is also a one-component, physically drying System. The solid is after curing about 23-27 % (color-dependent). By the chosen one Composition is a plot-sized size controllable.

The solvent combination of the effect varnish is chosen so that it penetrates into the already at least partially dried primer layer and dissolves to a controllable depth (depending on the degree of drying of the primer layer). The selected proportion of precipitated silica in combination with the selected solvent influences the drying of the primer and the effect varnish so that areas of the primer remain softened, while the effect varnish in the drying process releases its remaining solvent very quickly, made possible by the high proportion of exposed silicic acid with their very high particle surface. The softening of the primer, along with the rapid drying of the effect, produces a large increase in surface tension. Due to the special composition of the primer varnish and effect varnish, this leads to targeted scar formation (leather look). In comparison, conventional zipper systems are subject to a predominantly uncontrolled tear behavior. In particular, the selected proportion of silica used in the present process specifically a desired rapid drying of the effect paint, while at the boundary layer between primer and effect paint by a excess solvent delivered to the primer paint (controlled by the selective choice of solvent) will control cracking. In contrast, silicic acid is used in the DE 20 2004 018468 specifically used for Mattierungszwecken (control of ink receptivity). The butyl acetate may be dissolved in butanol, which is then included in the percentages.

In the dependent claims 2 to 26 are advantageous variants of the paint spray can set played. In particular, claims 2 to 19 are concerned with ever more precise compositions, by which the result the scars or structure is respectively improved.

Around one possible fine spray picture to produce, can be used as blowing agent (gas) dimethyl ether become. Dimethyl ether (DME) is soluble in the paints used here and therefore jointly responsible for the fine spray picture.

Prefers can the Treibmittell / paint ratio 40 / 60-50 / 50 % By weight, preferably 44 / 56-46 / 54% by weight, be. In choosing this ratio are optimal leakage rates for the imaginary use achieved. Likewise, the amount of propellant ensures together with the respective paints for the maximum utilization of the Capacity.

Of Furthermore, the paint spray can set additionally from a third spray can exist that contains a topcoat paint. As a protective coating can e.g. a clearcoat can be used.

In one variant, the topcoat paint may comprise the following components:
Acrylic resin as a binder.

When Topcoat paint can also be a paint with the same composition as the primer varnish are used.

Prefers For example, the topcoating lacquer may be a leather color lacquer, the primer lacquer and effect varnish in the dry state a different coloring tendency (different color pickup behavior) with respect to the leather color bleach exhibit. Due to the different coloring tendency of primer varnish and effect paint appears the subsequently applied leather paint either brighter or darker on one or the other layer of varnish, whereby the leather look improves. In spite of the essentially same applied amount of paint per unit area of the leather color on the primer varnish or the effect varnish by the different ones Färbeneigung a slightly different color nuance.

If according to a Variant of the primer coat in the dry state a greater coloring tendency with regard to the leather color varnish than the effect varnish, can be an improved optical effect in terms of depth structure achieve. The cracks of the scar structure then appear darker than the raised Plots of the effect lacquer layer.

by virtue of the fact that the effect varnish contains precipitated silica becomes formed during drying of the paint a sponge-like structure, whereby the Saugbeigung or the capacity for a still final sprayed leather paint is enlarged. The silica containing this Paint leads thus to a paint layer that absorbs the leather paint to a greater extent. Purely visually affects this circumstance so that these areas with the same amount of leather dye per unit area less colored than Areas with better ink absorption behavior. In addition to the different ones Färbeneigung leads the spongy Structure also causes the gloss of this layer, despite the use the same color of leather, different from the gloss of each another layer with greater coloring tendency is. It is the interplay of these effects that leads to a very good overall impression and therefore lead to a real-looking leather imitation surface. Indeed This is only an additional effect, since the silica in terms of on the solvent combinations of the primer and effect varnish is adjusted so that the targeted scar structure results and therefore on a topcoat in many cases can be waived.

According to one Another embodiment, the Primer varnish and the effect varnish the same color pigments of have identical color. Although it is possible in principle by different color choices in the primer varnish and the effect of the effect coat on the subsequent appearance of the imitation leather surface is to take it provided by this configuration, the number of influencing factors reduce, so that in the application also fewer errors occur can. As far as the user still applies an additional topcoat, so needs this no longer colored to be. The different structure of base layer and effect layer (due to the matting effect of silica in the effect layer) provides alone for Effects that are only exacerbated by the topcoat paint can.

in the Below are embodiments of the Present invention explained in more detail with reference to a drawing. Show it:

1 a front view of a Lack-Sprühdosensets for imitation leather,

2 a schematic layer structure a support substrate having a faux leather surface coating and

3 a spray head in 1 illustrated spray cans in an enlarged view and partially cut.

This in 1 illustrated paint spray can set for producing a leather imitation surface consists of a first spray can 1 containing a primer varnish and a second aerosol 2 which contains an effect varnish forming a scar structure.

In addition, here in the present embodiment, a third spray can 3 provided, which contains a topcoat paint.

The spray cans (aerosol cans) 1 . 2 . 3 consist of tinplate and have a capacity of 150 ml with a full rim volume of 220 ml. They are approved and operated in accordance with TLG 300.

The not closer illustrated valve has a valve plate made of tinplate one closing the can Epon seal on. A defined riser length with calculated swelling behavior allows the complete Use of the content. A so-called side channel bore in the valve housing (VBH) bore, provides a constant propellant supply (gas) even with strong Inclination of the spray can while the spraying for sure. It also prevents clogging of the riser pipe Storage. Also, it is not necessary after using the can, empty it over the head (im Compared to conventional Valves). The VBH hole increased blowing agent content at exit is still responsible for a fine spray picture and thereby minimized spray edge formation.

Below the plastic cap 4 shows each of the spray cans 1 . 2 . 3 one in 3 Spray head shown in detail 5 on. This special spray head 5 is a so-called surface spray head and allows spraying that is comparable to the work and spray pattern of a cup spray gun. It forms a fan-like spray, which ensures a simple and very uniform paint application. For this purpose, the spray head 5 a special, rotatably designed nozzle insert 6 on. At the nozzle exit end 7 is a circular cross section in cross-section elevation 8th arranged in the front view in cross section has a lens shape. This increase fanned the spray. By turning the nozzle insert 6 For example, the main axis of the spray fan can be rotated so that, depending on the preference of the user and the object to be painted, the spraying direction of the spray jet can be reoriented. In the present case, the spray jet can be rotated by up to 90%.

Otherwise, the spray head 5 as conventional, known spray heads formed in spray cans. As blowing agent (gas) all three spray cans 1 . 2 . 3 Diemthylether (DME) in a gas / paint ratio of 45-55 wt .-% (preferably between 40-60 and 50/50 wt .-%).

The first in the spray can 1 contained primer coating in concrete embodiment comprises the following composition (in weight percent):
13% acrylic resin (BMA / MMA) as binder;
28% butyl acetate (85% in butanol),
19% methyl isobutyl ketone,
6% aromat. Hydrocarbons (eg Shellsol A) (aromatics-containing special gasoline)) as a solvent combination;
31% pigment paste; and
3% plasticizers and stabilizers) as additives.

It This is a one-component, physically drying Primer, which due to its solvent combination a very fast drying possible. The layer thickness is with a single application about 20 microns. By repeated application, this can be increased accordingly. For the Most applications use a layer thickness between 20-40 μm. By The drying time of the first coating is suitable for the subsequent further treatment already control the scar depth. Short drying times (e.g., 15 Min. At room temperature) give a deep grain image, longer drying times (e.g., 30 min-45 Min.) An ever flatter scar image. Likewise, two or multiple coating operation of the primer varnish even deeper scarring can be generated. The solid of the first Coating is about 32% (color dependent). This is important to a desired one Reaction after application of a second coating in the desired Way to ensure.

Of the Primer has good adhesion to a wide variety of Surfaces, such as coated wood, glass, metals, plastics such as ABS, PC, PC / ABS, PVC and PC on. He has one fast drying and is aging-resistant. He also fulfills the DIN 53160 part 1 and 2 (saliva and perspiration) and the DIN EN 71 part 3 (free of soluble Heavy metals).

The one in the second spray can 2 contained effect paint in this embodiment comprises the exact following composition (in weight percent):
10% acrylic resin (BMA / MMA) as a binder;
41% butyl acetate (85% in butanol),
16% methyl isobutyl ketone,
7% aromat. Hydrocarbons (eg Shellsol A (aromatics-containing special gasoline)) and
6% methyl ethyl ketone as solvent combination;
10% pigment paste;
8% silica (precipitated variant); and
2% plasticizers and stabilizers) as additives.

It is hereby a one-component, physically drying Effect paint. The effect varnish has a specific solvent combination, which penetrates into the lacquer layer of the first coat of lacquer and until to a controllable depth (depending on the degree of drying of the first coating). The selected share felled on silica in combination with the solvent influences the drying of the primer varnish and the effect varnish so that areas of the primer still remain softened, while the effect varnish in the drying process its remaining solvents released very quickly, which is due to the high proportion of partially exposed silica with its very high particle surface is made possible.

The Application of the effect varnish takes place with a layer thickness of approximately 15 μm. Of the Effect lacquer also has a solids content of 25%, which results in Combination with the first coat of paint, the grain depth is supported. Due to the chosen Composition of the second coating is the parcel size formation controllable. Depending on order frequency can be great Create plots (coarse picture) or small plots (fine picture). If the order is two or three times, the parcel image becomes smaller and smaller. This results in an ever finer leather look.

The Invention is self-evident in the entire scope of claim 1 executable and not on the above embodiment limited.

Either the primer varnish as well as the effect varnish become high quality Pigments used for to ensure a very good lightfastness. These pigments are free from Heavy metals. Furthermore, by their combination all colors according to the usual color fans adjustable.

Of the Effect paint fulfilled DIN 53160 Parts 1 and 2 (saliva and perspiration) and DIN EN 71 Part 3 (free from soluble Heavy metals).

at the present embodiment are furthermore, the organic and / or inorganic color pigments the same (same color) as the organic and / or inorganic Pigments of primer varnish. The effect varnish produced during the drying process a scar structure, which increased Plots and intervening scar tears arise that have a leather surface in their Imitate structure. Forming this structure is based on the rapid Drying and increased surface tension. additionally produces the silica During the drying process, a sponge-like structure, whereby the Effect varnish after drying has a different matting than the primer varnish. About that In addition, this can also be set so that by the spongy Structure the coloring gradient the effect varnish lower and thus the color absorption behavior is greater.

The third in the spray can 3 containing topcoat paint comprises as constituents:
Acrylic resin as a binder.

There is also the possibility of using the first spray can 1 a topcoat layer 14 applied. Then the topcoat and primer are identical.

Of the Cover layer paint fulfilled the DIN 53160 part 1 and 2 (saliva and perspiration) and the DIN EN 17 part 3 (free of soluble Heavy metals).

The Soften the primer paint together with the fast drying of the second coating produces a strong increase in the surface tension. This leads by the special composition of the two paints to a purposeful Scarring (leather look). In comparison, are subject to conventional Tear paint systems one predominantly uncontrolled tear behavior. The Total lacquer layer has a thickness of 50 to 60 microns.

The following will now be based on the 2 the use of the paint spray can set explained in more detail.

On a carrier substrate 9 , For example, a mobile phone housing made of plastic, by means of the first spray can 1 a primer coat layer 10 applied. The carrier substrate is preferred 9 sprayed with the primer at a distance of 30 cm. The primer lacquer has very short intermediate drying times, so that several layers can be applied in relatively short intervals. This is important for vertical surfaces and for a quick final result.

After at least partial drying of the primer lacquer layer 10 is by means of the second spray can 2 an effect varnish layer 11 applied. This forms a directed parcel-shaped structure during flash-off / drying, which comes very close to a leather surface in the optics. The formation of the structure is based on the rapid drying of the effect lacquer layer and an increased surface tension. In addition to the increased parcels 12 cracks occur 13 a crack on which the effect varnish layer 11 is interrupted and the primer coating layer 10 you can see. The graining itself is dominated by the primer, ie the amount of varnish and the thickness of the layer used to produce the primer coating layer 10 was sprayed on. The primer coating layer 10 and the effect varnish layer 11 namely have a different elongation behavior.

The Composition of the two paints are coordinated so that is a uniform and targeted crack structure is formed. This allows especially in home improvement and Hobby area even a novice Relatively fast positive and visually appealing results too achieve.

After drying the effect lacquer layer 11 is by means of the third spray can 3 a topcoat layer 14 applied. The topcoat layer 14 can be a pure clearcoat that serves as a surface protection. Due to the structure of the effect lacquer layer 11 is the penetration behavior with regard to the primer lacquer layer 10 greater. The effect paint layer 11 points in the area of the cracks 13 namely a lower order of the topcoat. This can be exploited with dyed topcoat. In particular, in the area of the topcoat layer 10 secured an increased gloss. The plots 12 the effect lacquer layer 11 absorb more strongly with the topcoat, leaving a matt finish. As a result, a matting difference or when coloring a color difference between parcels 12 and cracks 13 guaranteed. Even the gloss shows differences in comparison.

By careful coordination of the ingredients, especially the spray cans 1 and 2 , a surface refinement can also be performed on difficult geometries. Due to the targeted combination of the lacquers used here, it is possible very quickly to achieve a uniform and large part of previously determinable scar optics even in the crafts and hobby sector. The requirement for the user's ability has therefore been considerably reduced due to the targeted composition.

Claims (26)

Paint Sprühdosenset for producing a leather imitation surface, with a first spray can containing a Contains primer varnish, and a second spray can, which contains a, a grain structure forming effect varnish, wherein the primer coating has the following composition (in weight percent) includes: 10-18 % Acrylic resin (BMA / MMA) as a binder; 25.2-30.8% butyl acetate, 17,1-20,9% Methyl isobutyl ketone and 5.4-6.6% aromat. hydrocarbons as a solvent combination; 27.9-34.1% Pigment paste; and 2.7-3.3 % Plasticizers and stabilizers) as additives, and the Effect varnish comprises the following composition (in weight percent): 8-12% acrylic resin (BMA / MMA) as a binder; 36.9-45.1% butyl acetate, 14.4-17.6% methyl isobutyl ketone, 6.3 to 7.7 % aromat. Hydrocarbons and 5.4-6.6% methyl ethyl ketone as Solvent combination; 9-11% pigment paste; 7.2-8.8% silica (precipitated variant); and 1.8-2.2 % Plasticizer and stabilizer (s) as additives. Paint Sprühdosenset according to claim 1, characterized in that the first primer varnish 12-14 Wt .-% acrylic resin (BMA / MMA) as a binder. Paint Sprühdosenset according to claim 1 or 2, characterized in that the primer coating 13th Wt .-% acrylic resin (BMA / MMA) as a binder. Paint Sprühdosenset according to one of the preceding claims, characterized the primer varnish 27-29 % By weight of butyl acetate, 18-20 % By weight of methyl isobutyl ketone and 5.8-6.2 wt .-% aromat. hydrocarbons as a solvent combination includes. Paint Sprühdosenset according to one of the preceding claims, characterized in that the primer varnish 28% by weight of butyl acetate, 19% by weight Methyl isobutyl ketone and 6 wt .-% aromat. hydrocarbons as a solvent combination includes. Paint Sprühdosenset according to one of the preceding claims, characterized in that the primer varnish 30-32 Wt .-% pigment paste comprises. Paint Sprühdosenset according to one of the preceding claims, characterized in that the primer coating comprises 31% by weight of pigment paste. Paint Sprühdosenset according to one of the preceding claims, characterized in that the primer coat 2.8-3.2 Wt .-% additives. Paint spray kit according to one of the preceding gone claims, characterized in that the primer coating comprises 3 wt .-% additives. Paint Sprühdosenset according to one of the preceding claims, characterized in that the effect varnish 9-11 Wt .-% acrylic resin (BMA / MMA) includes. Paint Sprühdosenset according to one of the preceding claims, characterized in that the effect varnish comprises 10% by weight of acrylic resin (BMA / MMA). Paint Sprühdosenset according to one of the preceding claims, characterized in that the effect varnish 40-42 % By weight of butyl acetate, 15-17 % By weight of methyl isobutyl ketone, 6.8-7.2 wt .-% aromat. hydrocarbons and 5.8-6.2 Wt .-% methyl ethyl ketone as a solvent combination includes. Paint Sprühdosenset according to one of the preceding claims, characterized in that the effect varnish 41% by weight of butyl acetate (85% by weight in butanol), 16 % By weight of methyl isobutyl ketone, 7 wt .-% aromat. hydrocarbons and 6 wt .-% methyl ethyl ketone as a solvent combination comprises. Paint Sprühdosenset according to one of the preceding claims, characterized in that the effect varnish 9-11 Wt .-% pigment paste comprises. Paint Sprühdosenset according to one of the preceding claims, characterized in that the effect varnish comprises 10% by weight of pigment paste. Paint Sprühdosenset according to one of the preceding claims, characterized in that the effect varnish 7,6-8,4 % By weight of silica (precipitated Variant). Paint Sprühdosenset according to one of the preceding claims, characterized in that the effect varnish 8 wt .-% silica (precipitated variant) includes. Paint Sprühdosenset according to one of the preceding claims, characterized in that the effect varnish 1,8-2,2 Wt .-% additives. Paint Sprühdosenset according to one of the preceding claims, characterized in that the effect varnish comprises 2% by weight of additives. Paint Sprühdosenset according to one of the preceding claims, characterized in that the primer varnish and the effect varnish the same color pigments of identical color. Paint Sprühdosenset according to one of the preceding claims, characterized in that the propellant (gas) is dimethly ether. Paint Sprühdosenset according to one of the preceding claims, characterized in that the propellant / paint ratio 40 / 60-50 / 50% by weight, preferably 44 / 56-46 / 54 Wt .-%, is. Paint Sprühdosenset according to one of the preceding claims, additionally consisting of a third spray can, which contains a topcoat paint. Paint Sprühdosenset according to claim 23, characterized in that the topcoat lacquer includes the following components: Acrylic resin as a binder. Paint Sprühdosenset according to one of the claims 23 or 24, characterized in that the topcoat paint a Leather color is black, with the primer and the effect varnish in the dry state a different coloring tendency (different Color absorption behavior) with respect to the leather color lacquer. Paint Sprühdosenset according to claim 25, characterized in that the primer in the dry state a greater coloring tendency (lower Color absorption behavior) with respect to the leather color lacquer as the effect varnish.