JPS6132076B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a method for forming a sticker-preventing coating film that is difficult to apply to architectural structures such as utility poles, overpasses, moats, walls, etc., and even if the sticker is attached, it is easy to peel off, either artificially or naturally. It is something. Traditionally, as a method to prevent posters from being pasted on utility poles, etc.
A commonly used method is to wrap a plastic mesh around the bottom end of a utility pole, but this in itself significantly impairs the aesthetics, and since the mesh is made specifically for utility poles, it is difficult to wrap around the bottom end of a utility pole. It has drawbacks such as not being applicable to buildings, etc., and not being able to be used in widely planar areas such as bridge piers and moats. In addition, in order to solve the drawbacks of the net-like materials, paints containing silicon compounds or aggregates have been developed in recent years, but a coating that is sufficiently effective in preventing stickers has yet to be developed. The current situation is that this is not the case. In order to solve the above-mentioned problems, the present inventors developed a method for preventing pasting by creating a three-dimensional pattern of concavities and convexities with consistency on the surface of the coating film, and filed a patent application (Japanese Patent Application No. 40470/1983). According to this method, the effect of preventing pasting was sufficiently satisfactory, but when the object to be coated was a curved surface, the consistency pattern was likely to collapse, resulting in an aesthetic problem. The drawback was that it took a long time to do so. The present invention solves the above-mentioned problems, and provides a sticker-preventing coating that can be applied quickly and easily, has the aesthetic appeal of an abstract three-dimensional pattern, and can effectively prevent and remove stickers. This relates to a method of forming. That is, in the present invention, after applying an undercoat to the surface of a building structure as necessary, a thickening coating material is applied, and the coating film is coated on the surface with a depth of 1 to 20 mm and a length of about 5 mm.
~100mm and a width of about 2~50mm A pattern roller using a nap that has independent irregular sunken holes is used to form an uneven pattern, and then 100 weight of film-forming resin is applied on the coating film. The present invention relates to a method for forming a sticker-preventing coating film, which comprises applying a top coat consisting of 5 to 80 parts by weight of silicone oil and a necessary amount of a diluting solvent. According to the method of the present invention, the painted surface that is formed has an uneven and irregular surface with a height difference of about 1 mm or more, and it is difficult to apply the sticker smoothly on this surface, and the unevenness of the painted surface does not affect the surface of the sticker. This has the effect of making it extremely difficult to paste because the sticker appears and becomes difficult to see. Furthermore, even if a sticker is pasted, the painted surface is water-repellent, the adhesive properties of the glue are poor, and the surface is uneven, so there is little contact area with the sticker, so the sticker can be easily peeled off either artificially or naturally. It can be done. Furthermore, even if the object to be coated has a curved surface, the pattern itself is irregular, so even if the pattern is shifted or crooked, the aesthetic appearance is not impaired, and the entire surface has an irregular, abstract aesthetic appearance. Therefore, since there is no fear that the pattern will easily shift or shift, it has the advantage of being able to be constructed in a significantly shorter time than the conventional regular pattern roller. The method of the present invention will be explained in detail below. In the method of the present invention, first, if necessary, the surface of the building structure is prepared, and an undercoat is applied. Next, apply a thick coating material. The thickening coating material used in the present invention is a paint whose main components are a resin containing a large amount of aggregate and a solvent, a paint whose main components are a resin and a solvent containing a large amount of extender pigment, or a paint whose main components are a resin and a solvent that contain a large amount of extender pigment, or a paint whose main components are a resin and a solvent that contain a large amount of extender pigment. Examples include high solids paints. A particularly preferable coating material for thickening is a paint mainly composed of resin, aggregate and solvent, and the aggregate content is 30 to 70%.
% by weight are preferred. If the amount of aggregate is less than the above range, it will be difficult to obtain a thick coating film in one coat, while if it is more than the above range, the resin content will be reduced and the adhesion to the object to be coated will be reduced, which is not preferable. In addition, the aggregate is preferably a mixture of aggregate with an average particle size of less than 200 mesh and aggregate with an average particle size of 30 to 150 mesh, and the weight mixing ratio is
A ratio of 30/100 to 100/30 is preferable because it provides good coating workability and provides appropriate strength and hardness to the convex portions of the coating film. As aggregates, those commonly used for paints, such as silica stone, kansui stone, and sand, are used. The resin mentioned above may be one commonly used for paints, and typical examples thereof include epoxy resin, acrylic resin, urethane resin, and phthalic acid resin. Other solvents, hardeners, colorants or thickeners commonly used in paints,
Additives such as preservatives can also be added as necessary. The viscosity of the thickening coating material varies slightly depending on the coating method, but 100 to 500 poise (at 25℃) is appropriate; if it is smaller than this range, the uneven pattern of the coating will become less slanted, and if it is larger, the coating process will be difficult. It is undesirable because it makes your sex worse. Forms of thick coating materials include coated sprayed material C, multilayered sprayed material E, and multilayered sprayed material specified in JIS A6910.
Examples include emulsion paints such as RE, multi-layer spray material RS, solvent-based paints, synthetic resin emulsion thick sand wall-like spray material specified by JLS A6909, etc. Particularly preferably, the epoxy resin emulsion (50% aqueous dispersion) described in Japanese Patent Publication No. 49-46134 5 to
Aggregates such as silica powder, 25% by weight, 200 mesh or less15
-50% by weight, 15-50% by weight of aggregate of 30-150 meshes, 2-11% by weight of curing agents such as polyamines, amine adducts, polyamide resins, and 5-15% by weight of water and other additives such as thickeners. Viscosity consisting of 100~300
Poise (at 25°C) coating material is good. Other thickening coating materials that can be used in the present invention include the following. For example, Japanese Patent Application Publication No. 1973-
3 to 50% by weight of the epoxy emulsion described in Publication No. 75631 as a resin and hardening agent, and 5 to 70% by weight of cement.
A coating material with a viscosity of 100 to 500 poise (at 25°C) consisting of 20 to 70 weight % aggregate, 5 to 30 weight % water, and 0 to 20 weight % of coloring pigments and additives as necessary; synthetic resin Emulsion (50% by weight water dispersion) 10
-50% by weight, extender pigments such as calcium carbonate and talc, and 30-70% by weight of aggregate, 5-40% by weight of water, and optionally coloring pigments and additives 0-20% by weight; Solvent-type stipple paint consisting of 5-30% by weight of synthetic resin, 30-70% by weight of extender, 5-60% by weight of solvent, and 0-20% by weight of coloring pigments and additives as necessary; polyol component such as polyester (OH%3~
15) From 10 to 50% by weight, isocyanate component or urethane prepolymer (NCO% 3 to 15) 10 to 50% by weight, extender pigment 10 to 50% by weight, optionally colored pigments and additives from 0 to 20% by weight Urethane flooring agent or urethane waterproofing agent; Epoxy resin (epoxy equivalent: 140-270) 20-60
Solvent-free epoxy flooring agent consisting of 10-40% by weight of curing agent such as polyamide, amine adduct, polyamine, etc., 10-50% by weight of pigment (extender pigment, coloring pigment), and 0-20% by weight of additive; polyester. , 10-50% by weight of synthetic resins such as polyvinyl chloride, extender pigments
A putty material consisting of 30 to 70% by weight, color pigments and additives 0 to 20% by weight, and diluents 0 to 20% by weight. Painted by means. Next, before the coating film of the thickening coating material is semi-dry, preferably immediately after application of the thickening coating material, a pattern roller is used to impart an uneven pattern to the coated surface. A typical pattern roller used in the present invention is shown in FIG. Further, FIG. 2 shows a cut end view taken along line A-A' (the roller body is not shown). The pattern roller is composed of a cover 1 consisting of a nap 2 and a core 4, and a roller body 5, and is installed in the same way as a conventional general roller so that when in use, the cover 1 is rotated by pushing the roller body 5 forward. It is being In order to give the surface of the coating film an irregular pattern of convexes and convexes that prevents pasting, the pattern roller creates independent irregular depressed holes 3 in the shape of ridges, cracks, mountain ranges, or toroides on the surface of the nap 2. It's open. The size of the hole 3 is 1 to 20 mm deep, particularly preferably 5 to 10 mm, and 5 to 100 mm long, particularly preferably 5 mm.
-30 mm, width 2-50 mm, particularly preferably 3-10 mm. If the length and width of the hole 3 are smaller than the above range, the unevenness of the resulting coating film will be small and a coating film that is effective in preventing paper sticking will not be obtained; This is not preferred because a coating film cannot be obtained and the appearance is also impaired. Further, if the depth of the holes 3 is shallower than the above range, it becomes difficult to obtain an irregular pattern of projections and depressions in the coating film, and the effectiveness of the coating film in preventing pasting is reduced, which is not preferable. The thickness of the nap 2 should be greater than the minimum depth of the hole 3, 1 mm, but normally 2 to 30 mm is appropriate. The material of Natupu 2 does not absorb paint substantially.
Further, when the cover 1 is rotated during use, any material may be used as long as it has enough hardness to push the paint on the convex part of the cover into the concave part (hole 3) and not substantially deform the hole 3, such as plastic, Rubber, metal, wooden materials, etc. can be used. How to use a pattern roller is to apply a thick coating material and then rotate it while pressing it onto the surface of the coating film. Before applying the thickening coating material to the pattern roller, if you apply a solvent that is difficult to miscible with the solvent (diluent) used for the thickening coating material to the nap surface of the pattern roller, the thickening coating material can be easily applied. This is preferable because it is less likely to adhere to the nap surface. For example, when a thickening coating material uses water as a solvent, a solvent such as mineral spirits, ethylbenzene, xylene, toluene, ester, ketone, or ethylcyclohexane;
When the coating material for thickening uses an organic solvent, water,
Use alcohol, mixed threads of water and alcohol, mixed threads of water and amines (eg triethylamine, ammonia, dimethylethanolamine). In particular, 0.01 to 50% by weight of titanium coupling agent is preferably added to the solvent applied to the nap surface in advance.
Adding 0.1 to 20% by weight can prevent the thickening coating material from entering the holes on the nap surface and clogging them.
It is also preferable because it improves adhesion with the top coat paint in the subsequent process. Titanium coupling agents include isopropyl triisostearoyl titanate, isopropyl tridecylbenzenesulfonyl titanate, isopropyl tri(dioctylpyrophosphate) titanate, tetra(2,2 diallyloxymethyl-1-butoxy) di(ditridecyl) phosphite titanate, Di(dioctylpyrophosphate)oxyacetate titanate and the like are representative examples. Apply a thick coating material, create an irregular pattern with a pattern roller, and then apply a top coat. It is preferable to apply the top coat after the irregular pattern coating film has completely dried. The film-forming resin used in the top coat is usually a film-forming resin used in the top coat of architectural structures, such as lacquer drying resins such as phthalic acid resins, acrylic resins, and vinyl resins; acrylic urethane resins; Two-component curing resins such as polyester urethane resins, unsaturated polyester resins, and epoxy resins; thermosetting resins such as melamine-phthalic acid resins and melamine-acrylic resins can be used. The silicone oil mentioned above is liquid at room temperature. Specific examples include dimethylsiloxane derivatives, methylphenylsiloxane derivatives, methylalkylsiloxane derivatives, methylvinylsiloxane derivatives, and methylhalogenated alkylsiloxane derivatives. The silicone oil is used in an amount of 5 to 80 parts by weight based on 100 parts by weight of the film-forming resin. If the amount of silicone oil is less than 5 parts by weight, the effect of inhibiting the adhesion of the sticker will be insufficient, and if it is more than 80 parts by weight, it will be difficult to mix homogeneously into the paint.
Furthermore, the surface of the paint film becomes wet and easily becomes dirty due to adhesion of dust, which impairs its aesthetic appearance. The top coat paint is applied by means such as spray painting, roller painting, and brush painting. Topcoats have a dry film thickness of 10 to 100 mm, depending on whether the building structure is indoors or outdoors exposed to the elements.
Approximately μ is appropriate. The present invention will be explained below with reference to Examples. In the examples, "parts" and "%" indicate "parts by weight" and "% by weight," respectively. Example 1 Epoxy resin emulsion (50% water dispersion) 10
parts, polyamide curing agent 5 parts, average particle size 60-100
25 parts of meshite silica stone, 45 parts of meshite silica powder with an average particle size of 250 to 280, 0.5 parts of methyl cellulose, and water
A thick coating material with a viscosity of 300 poise consisting of 14.5 parts was applied to the asbestos slate board using a stipple roller, and a length of 10 parts was applied to the surface of the rubber nap before semi-drying.
Mineral spirits were applied to a pattern roller having a large number of independent, irregular holes of irregular length and length, irregularities in the range of ~20 mm, width of 5 to 8 mm, and depth of 5 mm, in the form of cracks in the ground, with no periodicity, and the coating film was pressed and rolled by applying mineral spirits. An irregular pattern with concave and convex patterns was created. After the irregular pattern coating has dried, apply acrylic urethane resin paint [V Top: Product name manufactured by Dainippon Toyo Co., Ltd.]
A top coat made by adding 10 parts of silicone oil [KP356: trade name manufactured by Shin-Etsu Chemical Co., Ltd.] to 100 parts of resin was spray-painted on the surface of the uneven and irregular pattern coating, and a top coat with a dry film thickness of 40 μm was applied. A coating film was formed to form a paper-sticking prevention coating film. Example 2 Viscosity consisting of 40 parts of white cement, 22 parts of silica stone with an average particle size of 150 mesh, 18 parts of epoxy resin and polyamide curing agent (1:1), 3 parts of titanium oxide, 0.5 parts of hydroxyl ethyl cellulose, and 16.5 parts of water. A thick coating material of 320 poise was applied to the asbestos slate board using a sprayer, and before it was semi-dry, a meandering pattern of 30 mm in length, 3 to 5 mm in width, and 5 mm in depth was cut on the surface of the plastic nap. A pattern roller having a large number of irregular ridge-like holes was applied with xylene containing 5% isopropyl tri(dioctylpyrophosphate) titanate, and the coating film was pressed and rolled to form an uneven pattern. After the irregular pattern coating has dried, apply resin 100 to the vinyl resin paint [Vinylose: trade name manufactured by Dainippon Toyo Co., Ltd.].
silicone oil [Silicone TSF45/:
A top coat containing 30 parts of Toshiba Silicon Co., Ltd. (trade name)] was applied by roller to the surface of the uneven and irregular pattern coated film to form a top coat with a dry film thickness of approximately 15 μm to form a sticker-preventing coat. . Example 3 20 parts of acrylic synthetic resin emulsion (50% aqueous dispersion), 40 parts of silica powder with an average particle size of 250 to 280 mesh
Using a stipple roller, apply a thick coating material consisting of 20 parts of calcium carbonate, 3 parts of titanium oxide, 0.5 parts of hydroxyl ethyl cellulose, and 16.5 parts of water.
Apply on an asbestos slate board coated with an acrylic resin undercoat, and before semi-drying, apply a layer of 5-20 mm long, 3-5 mm wide, and 5 mm deep to the surface of the plastic nap.
Di(dioctylpyrophosphate)oxyacetate titanate 10% on a pattern roller with a large number of holes in an irregular fjord topography in the range of
n-butyl alcohol containing n-butyl alcohol was applied, and the coating film was pressed and rolled to form an irregular pattern of protrusions and recesses. After the irregular pattern coating has dried, apply silicone oil (Silicone TSF456: Toshiba Silicone) to 100 parts of resin to acrylic urethane resin paint [V Top].
A top coat containing 70 parts of the product name manufactured by Co., Ltd.] was applied by brush to the surface of the uneven and irregularly patterned coating film, and the dry film thickness was approximately 25 cm.
A topcoat film of μ was formed to form a paper-sticking prevention film. Example 4 A paper-sticking prevention coating film was formed in the same manner as in Example 1 except that mineral spirits containing 5% isopropyltridecylbenzenesulfonyl titanate were used as the solvent applied to the nap surface of the pattern roller. Comparative Example 1 In Example 1, the rubber nap surface has a length of 150 mm.
1 to 2 crack-like holes with a width of 30 mm and a depth of 5 mm.
A coating film was formed in the same manner as in Example 1 except that a pattern roller having a pattern of 100 cm ² was used. Comparative Example 2 Example 2 except that a pattern roller having a number of ridge-like holes of 10 mm in length, 8 mm in width, and 0.8 in depth was used on the surface of the plastic nap.
A coating film was formed in the same manner as above. Comparative Example 3 In Example 3, the rubber nap surface had a diameter of 2 mm.
A coating film was formed in the same manner as in Example 2, except that a pattern roller having 800 uniform holes/1100 cm ² with a diameter of 4 mm and a depth of 4 mm was used. Comparative Example 4 A coating film was formed in the same manner as in Example 1 except that a top coat without silicone oil was used. Comparative Example 5 A coating film was formed in the same manner as in Example 1, except that no mineral spirit was applied to the nap surface of the pattern roller in order to form an uneven pattern. Paint entered the holes of the pattern roller and caused clogging, resulting in areas where uneven patterns were not formed, resulting in poor aesthetics and workability. Examples 1, 2, 3, 4 and comparative examples 1, 2, 3,
Dry copy paper measuring 10 x 10 cm was glued to the painted board prepared in step 4 using commercially available starch paste or synthetic glue, and the number of days until the copy paper naturally peeled off after being exposed outdoors was measured. The test results are shown in Table-1. As is clear from Table 1, in Comparative Examples 1 and 2, which used pattern rollers with hole sizes outside the range defined by the present invention, and in Comparative Example 4, which did not use silicone oil, the peeling effect was significantly inferior. Further, in Comparative Example 3, the peeling effect was comparable to that of the examples of the present invention, but pattern distortion occurred in the unevenness of the coating film, which caused aesthetic problems. On the other hand, according to the method of the present invention, the application was easy, the peelability of the sticker was excellent, and the aesthetic appearance was also excellent.

[Table] Also, in Examples 1, 2, 3, 4 and Comparative Example 3, a cylindrical surface of 10 cm ² with an outer diameter of 80 cm was used instead of the asbestos slate plate.
Each was painted in the same way, except for the coating.
The application time in Example was approximately 30 minutes, whereas in Comparative Example 3, careful painting was required to obtain a coating that maintained a consistent pattern, and the application time was approximately 30 minutes. It took about 7 hours to form a coating film with an aesthetic appearance.

[Brief explanation of the drawing]

Fig. 1 is an external view of a typical pattern roller used in the present invention, Fig. 2 is an enlarged cut-away end view taken along A-A' (the roller body is not shown), and Fig. 3 is a representative partial cut-away of the cover. FIG. 1...Cover, 2...Nut, 3...Hole, 4...
...Core, 5...Roller body.

Claims (1)

[Claims] 1. After applying an undercoat to the surface of a building structure as necessary, a thickening coating material is applied, and the coating film is coated with:
Forming an uneven irregular pattern on the surface with a pattern roller using a nap having independent irregular recessed holes with a depth of about 1 to 20 mm, a length of about 5 to 100 mm, and a width of about 2 to 50 mm, A method for forming a paper-sticking prevention coating film, which further comprises applying a top coat consisting of 100 parts by weight of a film-forming resin, 5 to 80 parts by weight of a silicone oil, and a necessary amount of a diluting solvent on the coating film. 2. The method for forming a pasting prevention coating film according to claim 1, wherein the thickening coating material contains 20 to 70% by weight of aggregate. 3. A patent characterized in that the aggregate is a mixture of aggregate with an average particle size of less than 200 mesh and aggregate with an average particle size of 30 to 150 mesh in a weight ratio of 30/100 to 100/30. A method for forming a pasting prevention coating film according to claim 2. 4 The viscosity of the thick coating material at 25℃ is 100 to 500.
The method for forming a pasting prevention coating film according to claim 1, wherein the coating film is poise. 5. The method for forming a pasting prevention coating film according to claim 1, characterized in that a solvent is applied to the nap surface of the pattern roller. 6. The method for forming a pasting prevention coating film according to claim 1 or 5, characterized in that a solvent containing 0.01 to 50% by weight of a titanium coupling agent is applied to the nap surface of the pattern roller.