JPH11130986A - Gloss, solvent-based texture wall coating material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gloss, solvent-based texture wall coating material which forms a gloss, rough texture wall coating film by applying the coating material directly on a surface of a substrate to be coated. SOLUTION: A solvent-based synthetic resin coating material which forms a gloss, rough texture wall coating film on a surface of a substrate to be coated comprises 15-90 pts.wt. of a solvent-based or a non-water dispersible synthetic resin having a glass transition temperature of +5-+40 deg.C, 0.1-40 pts.wt. of a coloring pigment and 0.1-20 pts.wt. of a viscosity provider. The viscosity of the coating material is so adjusted by incorporating a solvent as to form a rough texture wall coating film when coating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glossy solvent-based thick film finish coating material, and more particularly to a technique relating to a thick film finish coating material capable of forming a glossy uneven pattern by roller coating or spray coating. is there.

[0002]

2. Description of the Related Art Conventionally, as a thick film finish coating material for finishing the interior and exterior of a building in an uneven pattern, for example, JIS A6909 multi-layer coating material C, JIS A6909 multi-layer coating material E, JIS A6909 waterproof multi-layer coating material. A coating material E is known. The process of forming the concavo-convex pattern of these coating materials is a total of 4 to 5 processes of undercoating + one coating of the main material or two coatings + two coatings of the main material. Is required.

Usually, in the case of a newly provided surface to be coated, a water-based or solvent-based undercoat is applied prior to the formation of the uneven pattern. For the glossy top coat, a glossy solvent-based enamel or a glossy synthetic resin emulsion-based enamel is applied.

A coating material that can simplify the coating process or shorten the construction period is an acrylic emulsion-based coating material using a microemulsion. The undercoating material can be omitted on a newly-coated surface, and one coating step is omitted. can do.

As an elastic coating material capable of forming a glossy uneven pattern in a small number of coating steps, an acrylic emulsion-based JIS A6909 waterproof thin coating material E / single-layer elastic material is used. This specification is composed of a total of three processes of a base material and a main material twice.

[0006]

However, the coating material JIS A6909 multi-layer coating material C, which forms a concavo-convex pattern, has a problem that it is not glossy and needs to be coated with a top coating material because it uses cement as a binder. The JIS A6909 multi-layer coating material E is a coating material that forms an uneven pattern using an acrylic styrene-based synthetic resin emulsion as a binder, and contains a large amount of extender pigments. There is a problem that requires painting. The steps of the coating material for forming these concavo-convex patterns are 4 to 5 steps of undercoating + main coating once or twice + topcoating twice, and three types of materials are required for undercoating, main coating, and topcoating. There is a problem in the process and construction period. Further, when the temperature is 0 ° C. or lower, there is a problem that a film is not formed due to freezing or the like.

The above-mentioned coating material which can simplify the coating process or shorten the construction period requires an undercoat in the case of fragile groundwork or repainting.

The present inventor has conducted research to solve the above-mentioned problems in the conventional coating materials, and as a result, has found a good glossy solvent-based thick film finishing coating material, and has completed the present invention.

That is, an object of the present invention is to provide a glossy solvent-based thick film finish coating material capable of forming a glossy thick film uneven pattern by directly coating the surface to be coated (base).

[0010]

The invention of claim 1 is a solvent-based synthetic resin coating material capable of forming a glossy thick-film uneven pattern on a surface to be coated, comprising a glass transition temperature (hereinafter, referred to as T).
g. ) Of +5 to + 40 ° C., 15 to 90 parts by weight of a solution type synthetic resin or a non-aqueous dispersion type synthetic resin,
It is characterized in that 1 to 40 parts by weight and 0.1 to 20 parts by weight of a viscosity-imparting agent are blended, and the viscosity is adjusted to include a solvent so that it can be applied to a thick-film uneven pattern.

The thick film finish coating material according to the first aspect of the present invention can be applied to a surface to be coated by a coating means such as a roller or spraying to form a glossy thick film uneven pattern. Since the coating film contains a synthetic resin having a Tg of +5 to 40 ° C., it has flexibility. The coloring pigment can make the coating film a predetermined color tone. The viscosity-imparting agent and the solvent serve to adjust the coating material to the physical properties required for coating. Further, the viscosity imparting agent is blended in order to obtain an uneven pattern on the coating film.

According to a second aspect of the present invention, there is provided a solvent-based, two-part type synthetic resin coating material capable of forming a glossy thick uneven pattern on a surface to be coated, wherein the solution has a glass transition temperature of +5 to + 40 ° C. 15 to 90 parts by weight of a type synthetic resin or a non-aqueous dispersion type synthetic resin, 0.1 to 40 parts by weight of a color pigment, and 0.
1 to 20 parts by weight, comprising a main component that contains a solvent and is adjusted to have a viscosity that can be applied to a thick film uneven pattern, and a curing agent that cures the main component (mixed component). And

The thick film finishing coating material according to the second aspect of the present invention is obtained by mixing a main component and a curing agent and applying the mixture to a surface to be coated by a coating means such as a roller or spraying. A pattern can be formed. The coating has a Tg of +5 to 40 ° C
It has flexibility because the synthetic resin is blended. The coloring pigment can make the coating film a predetermined color tone. The viscosity-imparting agent and the solvent serve to adjust the coating material to the physical properties required for coating. The main component can be cured with a curing agent to form a coating film.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION A solution type synthetic resin or a non-aqueous dispersion type resin (NAD resin) is an acrylate ester, an acrylic polyol, an acrylic copolymer resin (a copolymer monomer:
Styrene, vinyl acetate, ethylene vinyl acetate, veova,
One or a plurality of types can be selected from the group of vinyl chloride, vinylidene chloride), polyvinyl acetate, ethylene vinyl acetate, veoba, polyurethane, silicone resin, fluorine resin, epoxy resin and the like.

The solution type synthetic resin or the NAD resin is preferably Tg + 40 ° C. or lower in order to make the coating film flexible.
Tg of 5 ° C. or higher is preferable from the viewpoint of pollution by oily smoke in the atmosphere. Solution type synthetic resin or NAD resin is 15-
90 parts by weight. If the amount of the solution type synthetic resin or NAD resin is less than 15 parts by weight, a predetermined gloss (60-degree specular gloss) cannot be obtained, and a glossy finish of the coating film cannot be obtained. When the amount of the solution type synthetic resin or NAD resin exceeds 90 parts by weight, the viscosity increasing agent and the thixotropy cannot be imparted by the viscosity imparting agent, and the uneven pattern of the coating film cannot be obtained. If necessary, extender pigments, coloring pigments, mica powder, aluminum powder, plastic pigments,
Color pigments, aggregates, fibers and the like can be used.

As the extender, there can be used materials usually used for paints, such as calcium carbonate, precipitated barium sulfate and calcined clay. The blending amount of the extender is 60 parts by weight or less, preferably 0.1 to 30 parts by weight. If the extender exceeds 60 parts by weight, a predetermined gloss (60-degree specular gloss) cannot be obtained in the coating film, so that a glossy finish cannot be obtained.

The coloring pigment may be, for example, titanium oxide, carbon black, graphite, iron oxide black, iron oxide yellow, iron oxide red, quinacridone red, naphthol red, lake red, Hansa yellow, titanium yellow, cyanine blue, cyanine green, or the like. Parts or less. When the amount of the coloring pigment is more than 40 parts by weight, the physical properties of the coating film deteriorate, and when the amount is less than 0.1 part by weight, there is no coloring effect. The above-mentioned mica powder, aluminum powder, plastic pigment, and colored aggregate can be used when imparting a design property as a finish.

As the viscosity-imparting agent for the solvent-based paint, finely divided silica, bentonite and ultrafine precipitated calcium carbonate can be used as the inorganic viscosity-imparting agent, and organic bentonite and surface-treated fine calcium carbonate can be used as the composite viscosity-imparting agent. Metal organic soap, hydrogenated castor oil, polyamide wax, polyethylene oxide, vegetable oil,
Sweetened polymer oil, fatty acid dimer, surfactant (sulfated oil,
Higher alcohol sulfates, fatty acid ester type, polyether type) can be used.

In addition to the above-mentioned viscosity-imparting agents, synthetic resin emulsions can be used as a viscosity-imparting agent in solvent-based paints. These synthetic resin emulsions include acrylic ester emulsions, acrylic copolymer emulsions (copolymer monomers: styrene, vinyl acetate, ethylene / vinyl acetate, veova, vinyl chloride, vinylidene chloride, etc.),
Examples include vinyl acetate emulsion, ethylene / vinyl acetate emulsion, veova, urethane-modified emulsion, silicon-modified emulsion, fluorine-modified emulsion, and epoxy-modified emulsion. Hydroxyl-containing or soap-free emulsion among synthetic resin emulsions,
It is effective as a viscosity imparting agent.

The viscosity-imparting agent can be added in an amount of 0.1 to 20 parts by weight. When the amount of the viscosity-imparting agent is less than 0.1 part by weight, the viscosity does not increase and the uneven pattern of the coating film cannot be formed. When the amount of the viscosity-imparting agent exceeds 20 parts by weight, an uneven pattern of the coating film can be formed, but the gloss is reduced.

As the solvent, an aromatic solvent such as xylene and an aliphatic solvent such as mineral terpene can be used.

By mixing a solution type synthetic resin or NAD resin, an extender pigment, a color pigment, a viscosity imparting agent and a solvent, a one-part type (one-part type) thick film finish coating material can be obtained. This coating material is a room temperature drying type.

The thick film finish coating material is composed of a main component obtained by mixing a solution type synthetic resin or NAD resin, an extender, a coloring pigment, a viscosity imparting agent and a solvent, and a curing agent for curing the main component. It can also be a dosage form (two-pack type). In this case, as the curing agent, a component which reacts with a solvent of the main component or reacts with a reactive group in the main component to be cured is used.

This two-pack type can be a polyol type (two-pack urethane resin coating material) in which a curing agent of polyisocyanate is reacted with a polyol as a main component to cure the main component. This two-pack type coating material can be cured at room temperature.

As the polyisocyanate, HMD
Non-yellowing polyisocyanates such as I (hexamethylene diisocyanate) and IPDI (isophorone diisocyanate) can be used. Note that yellowing-type polyisocyanates such as MDI (diphenylmethane 4,4 ′ diisocyanate) and TDI (tolylene diisocyanate) are not preferable from the viewpoint of weather resistance. As the curing agent, an adduct type such as lactone can be used, and in this case, the coating film can be made soft.

As the fiber component to be added to the thick film finish coating material, fibers such as human silk and cotton can be added to the coating material in an amount of 5 parts by weight or less. This fiber is, for example, 0.1 to 5 mm
It is preferable to use those cut into pieces. If the fiber component to be blended exceeds 5 parts by weight, the fiber component appears on the surface and fuzzing becomes large, which is not preferable.

In addition, other components such as an aggregate can be added to the thick film finish coating material, if necessary, as long as the properties of the coating film are not impaired.

This glossy solvent-based thick film finish coating material can form an uneven pattern by being applied to a building, and can be used for a glossy solvent-based thick coating which can shorten the construction process and shorten the construction period. A film coating can be obtained. The coating is performed on inorganic building materials such as concrete and mortar, slate boards, siding boards, and gypsum boards using a coating (applying) means such as a sand roller or a spray gun. The specification is, for example, that a base layer having a coating amount of 0.3 to 3.0 kg / m ² and a film thickness of 0.1 mm to ³ mm is to be applied, and then the design of the uneven pattern is finished. The glossy solvent-based thick film coating material can easily form a concavo-convex pattern, has good adhesion to various bases, and does not require a primer material. Moreover, since it has gloss, an overcoating material is not required. It has good drying properties at room temperature, as well as low-temperature drying properties and freezing stability. For example, it can be applied even at -5 ° C, and becomes a coating film having good elasticity, moisture permeability, low stain resistance and weather resistance.

[0029]

Next, examples of the present invention will be described together with comparative examples. In Tables 1 to 3 used in the description, the percentages related to the paint components indicate% by weight, and the blending amounts indicate parts by weight.

According to Tables 1 and 2, thick film finish coating materials of Examples 1 to 15 using solvent-type synthetic resins or NAD resins having different Tg were prepared. The adjustment was carried out by stirring and mixing each paint component (paint material) for each example. In addition,
In Tables 1 and 2, the aliphatic solvent-soluble acrylic resin varnish, acrylic acid ester NAD, and aromatic solvent-soluble acrylic resin varnish of each coating component all have a resin content of 50% and a solvent of 50%.

[0031]

[Table 1]

[0032]

[Table 2]

For comparison of each test, the conventional coating materials and coating materials were adjusted to the thick film finish coating materials of Comparative Examples 1 to 5 with the formulations shown in Table 3. For adjustment, each coating component was stirred and mixed for each comparative example. Comparative Example 1 is JIS A6909 multi-layer coating material C, Comparative Example 2 is JIS A6909
A6909 Multi-layer coating material E, Comparative Example 3 is a coating material with simplified process and shortened construction period, Comparative Example 4 is a matting solvent-based coating material, Comparative Example 5 is JISA6909.
This is a coating material corresponding to the waterproof exterior thin coating material E.

[0034]

[Table 3]

After preparing the coating materials of Examples 1 to 15 and Comparative Examples 1 to 5, the viscosity and the TI value were measured. The measurement was performed according to the following method.

Viscosity: Measured with a B-type rotational viscometer at 20 ° C. Rotor rotation speed 20 rpm. TI value: The viscosity was measured at a rotor rotation speed of 0.5 rpm and 100 rpm using a B-type rotational viscometer under the condition of 20 ° C., and the viscosity at 0.5 rpm was divided by the viscosity at 100 rpm to obtain a TI value. If the TI value is small, it has Newtonian fluidity (water syrup) and no uneven pattern can be formed. When the TI value is large, it is thixotropy (purine-like), and an uneven pattern is formed. The measurement results were as shown in Tables 4 to 7.

The coating materials of Examples 1 to 15 and Comparative Examples 1 to 5
An inorganic material (slate plate) was quickly applied to a test plate. The preparation of the test plate was performed by applying once each of the prepared Examples 1 to 15 to the inorganic material (slate plate) at a rate of 300 g per 1 m ² using a wool roller or a spray gun, and at 20 ° C. standard condition. After drying for 3 hours, it was applied twice using a sand roller or a spray gun at a rate of 1000 g per 1 m ² . The test plates coated with Examples 1 to 15 were left horizontally for 7 days for each test.

Comparative Examples 1 to 5 were prepared in the same manner as in this example, except that the undercoat was not applied. In Comparative Examples 1, 2, and 4, test plates coated with an undercoat and an overcoat were prepared, and in Comparative Examples 3 and 5, test plates coated with an undercoat were prepared. The undercoat used was an aromatic solvent-dilutable acrylic resin sealer, and the overcoat was an aromatic solvent-diluted acrylic resin paint. For undercoating, apply 100 g per 1 m ^{2 on} a slate board using a wool roller,
Dried for one day under standard conditions. The comparative example was dried for 1 day at a standard temperature of 20 ° C. after coating, and the top coat was coated with a wool roller at 120 g per 1 m ^{2 and} dried for 3 hours at a standard condition of 20 ° C.
Similarly, the second topcoat was applied. After drying,
The test was carried out by leaving at -5 ° C, 5 ° C, and 20 ° C.

The gloss test plate was prepared by smoothly applying the prepared Examples 1 to 15 and Comparative Examples 1 to 5 to an inorganic material (slate plate) using an 800 μm film applicator and leaving it at 20 ° C. standard condition for 7 days. The test was performed. The finish (design) was tested after standing at 20 ° C. standard for 24 hours. Adhesion, resistance to repeated warming and cooling, water permeability,
The weather resistance was tested after standing at 20 ° C. for 7 days after coating. The adhesion and the resistance to the repetitive action of the heating and cooling were also tested on a fragile substrate (calcium silicate plate, specific gravity 0.8) and an old coating film (waterproof multilayer coating material E, exposure for one year).

The moisture permeability was tested by using a 125 .mu.m film applicator, applying it to filter paper, and leaving it at 20.degree. C. in a standard state for 7 days. The test plate for elongation is JIS A6909 6.31
A 1 mm-thick coated film piece was prepared according to
After standing for days, the test was performed. Table 4 shows the results of these tests.

The physical properties of the coating material were measured according to the following methods. After drying, the coating was allowed to stand at −5 ° C., 5 ° C., and 20 ° C. for testing. Drying time: After coating at −5 ° C., 5 ° C., and 20 ° C., the time until a coating film was formed was measured. Finish: Painted using a sand roller and a spray gun, and the degree of the uneven pattern was evaluated.

The following tests were conducted for the performance of the coating film. Gloss: Measures 60 ° specular gloss. Adhesion: Cut the coating film at the intersection with a cutter knife,
A gum tape was stuck to the coating film, the gum tape was peeled off, and it was confirmed whether the coating film was peeled off. Resistance to repeated warming / cooling action: Immersion in water at 20 ° C 18
After repeating the cycle of time → 20 ° C. for 3 hours → 60 ° C. for 3 hours for 10 cycles, it was compared with a standard plate to check whether there was any abnormality in the coating film.

Water permeability: JIS A6909 6.13 Measured by the water permeability B method (Route method). Moisture permeability: According to the JIS Z0208 moisture permeability test method (cup method) for moisture-proof packaging materials.

Stain resistance: The degree of contamination between the test plate and the standard plate after one year of natural exposure was compared. Weather resistance: The gloss and the degree of fading between the test plate and the standard plate after one year of natural exposure were compared. Elongation: The elongation at 20 ° C. was measured in accordance with JIS A6909 6.31.

The results of the tests of Examples 1 to 15 and Comparative Examples 1 to 5 are as shown in Tables 4 to 7. Evaluations such as □ in Tables 4 to 7 indicate good 良好>□>△> × bad.

[0046]

[Table 4]

[0047]

[Table 5]

[0048]

[Table 6]

[0049]

[Table 7]

From the test results in Tables 4 to 7, Examples 1 to 15
Each coating film has better low-temperature drying property than each of the coating films of Comparative Examples 1 to 5, and has gloss, adhesion, resistance to the repeated action of warming and cooling,
Excellent in water permeability, stain resistance, weather resistance, and elongation, so it can be applied directly to inorganic materials and old coatings, simplifying the process, shortening the construction period, and providing a waterproof, glossy solvent-based coating. It turns out that it is a material. Moisture permeability is higher than solution resin varnish by N
The use of the AD resin was superior, and the stain resistance and weather resistance of the two-part type were superior to those of the one-part type.

Comparative Example 1 was inferior to Examples 1 to 15 in low-temperature drying property, adhesion, resistance to repeated action of warming and cooling, water permeability, stain resistance, weather resistance, and elongation. Comparative Example 2 was inferior to Examples 1 to 15 in low-temperature drying property, adhesion, resistance to the repeated action of warming and cooling, water permeability, stain resistance, weather resistance, and elongation. Undercoating was required for adhesion. Comparative Example 3 was inferior in low-temperature drying property, stain resistance, weather resistance, and elongation as compared with Examples 1 to 15. Although the adhesion to the slate plate was good, there was a problem in the adhesion to the fragile substrate and the old coating film.

Comparative Example 4 had better moisture permeability than Examples 1 to 15, but was inferior in adhesion on a fragile substrate, water permeability, stain resistance, weather resistance, and elongation. Comparative Example 5 is similar to Examples 1 to 15
As compared with the above, low-temperature drying property, adhesion, resistance to repeated action of warming and cooling, water permeability, stain resistance, and weather resistance were inferior. Undercoating was required for adhesion. Examples 1 to 15 solve the problems of Comparative Examples 1 to 5.

In Example 12, as the viscosity-imparting agent, an acrylic styrene emulsion “Yodozol AD63” manufactured by Nippon NS Co., Ltd. (Tg 30 ° C., soap-free) was used.

As a two-part curing agent, a mixture of lactone-modified hexamethylene diisocyanate and isophorone diisocyanate manufactured by Asahi Kasei Kogyo Co., Ltd., "Duranate TSE100" was weighed and measured by weight as shown in Table 1. Hydroxyl / isocyanate ratio is from 1/1 to 1
/0.4 can be used, and the test was performed at 1/1 this time.

In Examples 1 to 11 and 13 to 15, an organic montmorillonite paste “Bolchset Paste UZ” manufactured by Boschers Co., Ltd. was used as a viscosity imparting agent.

In Examples 1 to 10 and 12 to 15, an aliphatic solvent-soluble acrylic resin varnish serving as a resin component was manufactured by Nippon Carbide Co., Ltd. as "Nissetsu KP1788A".
(Tg 30 ° C.), an acrylic acid ester NAD resin that is a resin component in Example 1 is “Nissetsu EU3240A” (Tg 5 ° C.) manufactured by Nippon Carbide Co., Ltd., and an acrylic acid ester NAD resin that is a resin component in Example 2 is , Nissetsu U3239 manufactured by Nippon Carbide Co., Ltd.
A ”(Tg 10 ° C.), and acrylic acid ester NAD resin to be used as a resin component in Examples 3, 9, and 12 was“ Nissetsu EU3870A ”(Tg1) manufactured by Nippon Carbide Co., Ltd.
5 ° C.), the acrylate NAD resin which is a resin component in Example 4 is “Nissetsu EU3214A” (Tg 20 ° C.) manufactured by Nippon Carbide Co., Ltd. The acrylate NAD resin which is a resin component in Example 5 is Nissetsu U3501A manufactured by Nippon Carbide Co., Ltd. (T
g25 ° C.), the acrylic acid ester NAD resin which is a resin component in Example 6 is “Nissetsu EU3415A” (Tg 30 ° C.) manufactured by Nippon Carbide Co., Ltd. The acrylic acid ester NAD resin which is a resin component in Example 7 is Nissetsu EU341 manufactured by Nippon Carbide Co., Ltd.
6A ”(Tg 35 ° C.), and an acrylic acid ester NAD resin that is a resin component in Example 8 was“ Nissetsu EU3417A ”(Tg40) manufactured by Nippon Carbide Co., Ltd.
° C) was used.

In Example 11, an aromatic solvent-soluble acrylic resin varnish serving as a resin component was “Corponyl A6378” (Tg 30 ° C.) manufactured by Nippon Synthetic Chemical Industry Co., Ltd., and xylene was used as a solvent.

The acrylate NAD resin used as the resin component in Example 13 was "Nissetsu U3391A" (Tg10 ° C.) manufactured by Nippon Carbide Co., Ltd. The acrylate NAD resin used as the resin component in Example 14 was used in Japan. "Nissetsu U3367" manufactured by Carbide Co., Ltd.
A "(Tg 20 ° C).

In Examples 1 to 12, the curing agent was weighed in a separate container to form a two-part type of the main agent and the curing agent. In Examples 13 to 15,
It was a one-pack type consisting of only the main agent. Using the coating materials of Examples 1 to 15,
An inorganic material (slate plate) was quickly applied to a test plate.

[0060]

According to the first and second aspects of the present invention, it is possible to form a glossy thick-film uneven pattern by directly coating the surface to be coated.

Claims (2)

[Claims] 1. A solvent-based synthetic resin coating material capable of forming a glossy thick-film uneven pattern on a surface to be coated, comprising a solution-type synthetic resin having a glass transition temperature of +5 to + 40 ° C. or a non-aqueous dispersion type 15 to 90 parts by weight of a synthetic resin and 0.1 to
A thick film finish coating material comprising 40 parts by weight and 0.1 to 20 parts by weight of a viscosity-imparting agent, and containing a solvent and adjusted to have a viscosity capable of being applied to a thick-film uneven pattern. 2. A solvent-based two-part type synthetic resin coating material capable of forming a glossy thick uneven pattern on a surface to be coated, comprising a solution type synthetic resin having a glass transition temperature of +5 to + 40 ° C. 15 to 90 parts by weight of non-aqueous dispersion type synthetic resin, 0.1 to 40 parts by weight of coloring pigment, and 0.1 to 20 parts by weight of viscosity imparting agent. A thick film finish coating material comprising: a main component adjusted to a suitable viscosity; and a curing agent for curing the main component.