JP3285551B2 - Stone tone roller coating composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating material for forming a natural stone-like coating which can be coated with a roller brush (hereinafter simply referred to as "roller").

[0002]

2. Description of the Related Art In recent years, a stone finish coating material capable of reproducing the texture of natural stone with a coating material has been often used for surface decorative finishing of interior and exterior of buildings.
This is due to the merit that the price is lower and there is no danger of peeling off as compared with a surface decorative finish which is used by attaching real natural stones. Further, there is an advantage that various hues and textures can be easily imparted by preparing a coloring aggregate and a filler to be contained.

[0003]

Most of the stone finishing coating materials having such many advantages are applied by spraying. However, in the case of coating by spraying, especially in the case of coating materials containing aggregate, scatter is increased, so careful curing is required before construction for environmental protection,
Material loss due to scattering was also increased. Further, there is a problem that the machinery for spraying becomes large-scale, and the burden on an operator is large.

Therefore, it has been attempted to apply such a conventional stone-finish coating material containing aggregate by a roller. However, the conventional stone-finish coating material has a viscosity suitable for spray coating. Because it has, riding of the coating material on the roller is poor,
The coatability from the roller to the surface to be coated was also insufficient, the friction of the aggregate when rolling the roller was large, and the coating workability was poor. As a result, there may be a case where the coating material is partially uncoated, and there has been a problem that a single coating cannot be applied to obtain a thick coating.

[0005] On the other hand, in some cases, the stone-like finish coating material is adjusted to have an appropriate viscosity for roller coating. At this time, when the solid content of the paint is high, the viscosity is adjusted by the effect of imparting viscoelasticity by the interaction between particles such as fillers and pigments used together with the thickener. This particle-particle interaction is
It is affected by the particle size of the filler or pigment used, and the smaller the particle size, the greater the effect, and therefore, the viscosity is advantageous for roller coating.

[0006] However, the fillers and pigments constituting the stone-like finish coating material are used in order to impart a stone-like colorful feeling.
In order to use a colored aggregate having a relatively large particle diameter and to make the color clearer, a filler having a small particle diameter is used as little as possible. Therefore, as described above, the effect of the interaction between particles is hardly obtained, and the viscosity suitable for roller coating cannot be obtained. Therefore, at present, there is only a stone-like roller coating material with a reduced versatility in order to ensure appropriate viscosity for roller coating.

Therefore, the problems to be solved by the present invention are: When applying with a roller that has almost no scattering of the coating material, the coating material should ride on the roller well, and when the roller is rolled, the coating material can be smoothly applied to the entire surface to be coated. 2. There is no need to repeatedly apply to form a thick film. 3. Since a colored powder having a relatively large particle size is used, the coating film formed looks very colorful even when viewed from a distance. The purpose of the present invention is to obtain a coating material containing a powder having the characteristics described above.

[0008]

Means for Solving the Problems In order to solve such problems, the inventors of the present invention consider the interaction between the particles of the filler as well as the particle size, the oil absorption amount of the filler, and the granular material of the system. Finding that the filling factor is related to viscoelasticity,
By combining powders and granules with a specific particle size and oil absorption, and adding colored powders with a large particle size to them, it has excellent stone-like versatility and secures appropriate viscosity for roller coating. A possible coating composition has been found.

That is, A. B. 100 parts by weight of the synthetic resin emulsion in terms of solid content. Particle size is 53μm or less, oil absorption 15ml / 100g
B. 100 to 300 parts by weight of the above powder and granules; B. 10 to 700 parts by weight of a powder having a particle diameter of greater than 53 μm, 300 μm or less, and an oil absorption of 10 to 15 ml / 100 g; B. contains at least 10 parts by weight of a colored powder having a particle diameter of more than 300 μm; And C. Has an average particle diameter ratio of 1: 1.5
A stone-like roller coating material composition, wherein the solid content of the entire coating material is 60 to 80%. It is.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on its embodiments. The synthetic resin emulsion used in the present invention is not particularly limited, and a general one can be used. For example, any of those obtained by emulsion polymerization of a monomer having a polymerizable unsaturated double bond, or those obtained by dispersing a previously synthesized resin using a dispersant in an aqueous dispersion medium may be used. It may be an emulsion. However, in the case of a powder type, it is necessary to add water at the time of use.

Examples of the types of these synthetic resin emulsions include polyvinyl acetate, polyacrylate, acryl-styrene copolymer, ethylene-vinyl acetate copolymer, vinyl acetate-acryl copolymer, ethylene At least one of a vinyl chloride copolymer, a vinyl acetate-veova copolymer and the like is used. Also,
An acrylic, urethane, or epoxy synthetic resin emulsion of an internal cross-linking type or a reaction curing type can also be used.

The B and C powders in the present invention generally include pigments, fillers, and the like, that is, extenders, color pigments, and (colored) aggregates that are generally blended into paints.
Examples of such extenders include heavy calcium carbonate, dolomite, kaolin, diatomaceous earth, white carbon, talc, barite powder, precipitated barium sulfate, barium carbonate,
Examples include silica sand, wollastonite, and mica.

On the other hand, as long as the requirements for the particle size and the oil absorption are satisfied, a coloring pigment may be used as appropriate. Examples of such color pigments include inorganic pigments such as titanium oxide, zinc oxide, carbon black, graphite, red iron oxide, yellow iron oxide, ocher, chrome green, ultramarine blue, β-naphthol, naphthol AS, pyrazolone, and benzimidazo. Insoluble azo pigments such as lone-based pigments, soluble azo pigments such as permanent red and lake red, condensed polycyclic pigments such as anthraquinone-based, perylene-based, and quinacridone-based pigments, mono-azo pigments such as fast yellow and benzimidazolone yellow, permanent yellow and the like Disazo pigments, condensed azo pigments such as isoindolinone yellow, anthraquinone pigments, quinophthalone yellow pigments such as quinophthalone yellow, and organic pigments such as phthalocyanine green, phthalocyanine blue, and quinacridone violet.

Similarly, as long as the particle diameter and the oil absorption are satisfied,
(Colored) aggregates can also be used. Examples of such (colored) aggregates include a method of baking a high-heat-resistance pigment-added sodium silicate-based binder on the surface of a granular material such as silica sand, crushed stone, or glass beads at a high temperature, an amino alkyd resin paint, or the like. Baking coating, coating with colored lacquer, omitting the baking step, and considering weather resistance, a siloxane cross-linking type containing an alkoxysilyl group as a functional group and an acrylic main chain It can be appropriately used such as one coated with a reactive oligomer and a coloring material composed of a pigment and a curing agent, or a crushed product of ceramics and a porcelain tile fired with the pigment. Also, granite, marble,
In addition to crushed materials such as limestone, diatomaceous earth, quartz powder, fused silica particles, glass cullet, glass beads and the like can also be used.

On the other hand, in the present invention, D.I. Can be used without particular limitation as long as it is colored among the (colored) aggregates described above. In particular, by adding a different-colored (colored) aggregate, the coating film formed from the coating material composition of the present invention has a variety of natural stone-like designs.

In addition, in the present invention, a plasticizer, a preservative, a fungicide, an antialgal agent, an antifoaming agent, a leveling agent, a pigment dispersant, an anti-settling agent generally used as an additive for paint,
An anti-sagging agent, a matting agent, an ultraviolet absorber and the like can be appropriately compounded to such an extent that the effect of the present invention is not impaired.

According to the present invention, such a powdered or granular material is obtained by the following method. Particle size is 53μm or less, oil absorption 15ml / 100g
As described above, C.I. D. The particle diameter is greater than 53 μm and not more than 300 μm, the oil absorption is 10 to 15 ml / 100 g, The particle diameter is classified into three groups, i.e., larger than 300 μm, and 100 parts by weight of the above-mentioned synthetic resin emulsion in terms of solid content. From 100 to 300 parts by weight, C.I. To 10-7
00 parts by weight, D.I. And at least 10 parts by weight of B. And C.
The average particle diameter ratio is 1: 1.5 to 30, and the coating material adjusted so that the total solid content is 60 to 80% is obtained by applying the coating material to a roller during roller coating. , Which is relatively sticking to the surface of the roller, and when the roller is rolled on the surface to be coated, the coating material is smoothly applied to the surface to be coated and becomes viscous without sagging It is. In this case, the D.C. Since the particle size of the colored powder particles is relatively large, the stone-like colorful design of the formed coating film can be clearly recognized even at a distance.

This is because the fluidity of the coating material of the present invention is determined by the mixing ratio of the particles having a limited oil absorption and the particle size. As a result, even if the ratio of the solid content in the coating material is high, an effect of increasing the fluidity of the coating material during roller coating also occurs.
The fact that this solid content ratio can be increased leads to a relatively viscous feeling of sticking to the surface of the roller when the coating material is included in the roller, and furthermore, it is less liable to sag after application to the surface to be coated. It leads to.

Here, the solid content of the present invention is a value based on the entire coating material. However, when the coating material is actually coated, that is, when the storage material is diluted at the time of construction, the solid content is a value based on the diluted coating material as a whole. It is.

B. If the oil absorption is less than 15 ml / 100 g, the viscosity of the coating material composition tends to decrease, and the adhesion to the roller and the application to the surface to be coated become poor,
Roller workability decreases. C. Similarly, when the oil absorption is less than 10 ml / 100 g, the viscosity of the coating material composition tends to decrease, so that the adhesion to the roller and the application to the surface to be coated deteriorate, and the workability of the roller decreases. On the other hand, if it is more than 15 ml / 100 g, the coating material composition loses its stickiness and becomes wet, so that the workability of the roller becomes extremely poor. B. For C. When the average particle diameter ratio is less than 1.5,
Because the coating material composition loses stickiness and becomes lumpy,
Roller workability becomes very poor. If it is larger than 30, the viscosity of the coating material composition becomes too large and the workability of the roller is deteriorated, and cracks are easily generated on the surface of the formed coating film. A. With respect to 100 parts by weight of the solid content of B.
Is less than 100 parts by weight, the roller workability decreases. If the amount is more than 300 parts by weight, cracks tend to occur on the surface of the formed coating film. A. With respect to 100 parts by weight of the solid content of C.I. If the compounding amount is less than 10 parts by weight, cracks tend to occur on the surface of the formed coating film. If the amount is more than 700 parts by weight, the coating material composition loses stickiness and becomes lumpy, resulting in extremely poor roller workability. D. Is less than 10 parts by weight, a colorful feeling cannot be obtained. The solid content of the whole coating material is 60%
If it is lower, the formed coating film sags on the surface to be coated. If it is higher than 80%, the viscosity of the coating material composition becomes too large, and the workability of the roller deteriorates. The solid content is
JIS K 5407 "Coating composition test method" 4. Measured by "heating residue".

The particle size of the granular material of the present invention is measured using a mesh sieve having a nominal size of 53 μm and a nominal size of 300 μm as specified in Appendix 3 in accordance with JIS Z 8801 “Test sieve”.

The surface to be coated with the coating material of the present invention, that is, the base material, is mainly a surface of a building interior / exterior, a civil engineering structure, or the like. It does not matter, but examples include various substrates such as concrete, siding board, extruded plate, metal and the like. When the base material is fragile or the surface is not smooth, it is preferable to perform the work after performing the base adjustment using a base adjustment material, a sealer, a primer, a surfacer, or the like.

Further, it can be used for repainting a painted surface, but also in this case, it is necessary to adjust the base according to the situation of the old coated surface. In addition, in the case of renovation of the interior surface, if the cloth etc. is stuck, peel off the base after adjusting it, and in the case of the renovation of the painted surface, perform the same repainting as described above.

On the film obtained by the coating material of the present invention,
Further, a protective coat layer can be provided. In particular,
In the case of application to an exterior surface requiring durability, it is preferable to provide a protective coat layer. The protective coat layer is not particularly limited as long as it is a clear coat layer. Depending on the purpose, a protective coat layer having a high weather resistance or a clear coat having excellent stain resistance may be applied.

[0025]

Examples of the present invention will be described below. Each coating material composition was manufactured using the raw materials shown in Table 1 and the blending shown in Table 2. These were tested based on the following method.

[0026]

[Table 1]

[0027]

[Table 2]

(Test method) * Roller coating property test Miracle Sealer ES (modified epoxy resin base coating material; manufactured by SK Chemical Co., Ltd.) was applied to a flexible board measuring 30 cm in length and 30 cm in width by 0.15 kg / m ^2. 20 ° C, 65% RH (hereinafter referred to as “standard condition”)
For 6 hours to prepare a test plate. On each test plate, each coating material composition of Table 2 with a mastic roller, respectively,
The coating was performed at a coating amount of about 2.2 kg / m ² . At this time, the coating was performed while checking the state of the application of the coating material composition on the roller and the state of application on the surface to be coated. At this time, the coating material composition has good glue on the roller, and the coating on the test plate surface can be spread smoothly. ○, the poor glue on the roller, even on the test plate surface, the portion not coated ×
Was evaluated. The results are shown in Table 3.

* Crack resistance test In accordance with JIS A 6909 "Building finish coating material" 6.9 "Crack resistance test by initial drying", the specimens produced in the roller coating test were immediately subjected to the standard condition and air velocity 3
The specimen is placed in a wind tunnel adjusted to m / s, and placed in parallel with the base flow. After 6 hours, the specimen is taken out and visually inspected for cracks on the surface. At this time, the case where no crack was observed was evaluated as ○, and the case where cracks occurred was evaluated as ×. The results are shown in Table 3.

* Design The appearance of the specimen subjected to the crack resistance test was visually observed. At this time, the design of the test sample coating film was a large pattern such as a natural stone material, which was recognizable even at a distance, and did not produce an unpainted portion. When the pattern of the material was fine and it appeared only a single color at a distance, it was evaluated as x.
The results are shown in Table 3.

* Sag resistance test A flexible board cut into a length of 400 mm, a width of 200 mm, and a thickness of 5 mm was manufactured by SK Chemical Co., Ltd. in accordance with “JIS A 6021 Roof coating waterproofing material 5.10 Sag resistance performance”. "Miracsealer ES" with a coating amount of 0.15
It was painted at kg / m2 and dried and cured for 6 hours to obtain a test plate. Around the smooth surface, leaving a sagging allowance of 40 mm in the longitudinal direction of the flexible board, a width of 10 mm,
Each coating material composition was applied to a concave portion formed after attaching a mold having a thickness of 6 mm and placing the mold horizontally, using a mastic roller. Immediately after the application, one side of the mold provided with a 200 mm sag is removed from the specimen, and then the entire specimen is held vertically and left at 20 ° C. for 24 hours. afterwards,
The state of sagging of each coating material composition in the portion from which the mold was removed was visually observed, and those having no sagging were evaluated as ○, and those causing sagging were evaluated as x. The results are shown in Table 3.

[0032]

[Table 3]

[0033]

According to the present invention, there is almost no scattering of the coating material,
A stone-like coating material composition that can be applied with a roller.It has good adhesion to the roller, and when the roller is rolled, the coating material is smoothly applied to the entire surface to be coated and has a viscosity that can be spread. have. Further, in the present invention, it is not necessary to repeatedly apply the coating in order to form a thick film, and a colored powder having a relatively large particle diameter is used. Even when viewed visually, there is an effect that looks very colorful.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI B05D 7/24 303 B05D 7/24 303B

Claims (2)

(57) [Claims] 1. A. B. 100 parts by weight of the synthetic resin emulsion in terms of solid content. Particle size is 53μm or less, oil absorption 15ml / 100g
B. 100 to 300 parts by weight of the above powder and granules; B. 10 to 700 parts by weight of a powder having a particle diameter of greater than 53 μm, 300 μm or less, and an oil absorption of 10 to 15 ml / 100 g; B. contains at least 10 parts by weight of a colored powder having a particle diameter of more than 300 μm; And C. Has an average particle diameter ratio of 1: 1.5 to 30,
A stone-like roller coating composition, wherein the solid content of the entire coating material is 60 to 80%. 2. A. Is in powder form, and water is added at the time of use to reduce the solid content of the entire coating material to 60 to 80.
%, And a stone-like roller coating material composition characterized by the following: