KR100591294B1 - Coating Compound for preventing attachment - Google Patents

Abstract

The present invention is 20 to 35 parts by weight of reactive polysiloxane, 5 to 20 parts by weight of single-ended reactive polysiloxane plasticizer, 0.5 to 2.0 parts by weight of silicone polyester, 3.0 to 4.0 parts by weight of polyethylene filler and 0.2 to 1.0 parts by weight of antisettling agent, 40 to solvents. 55 parts by weight, wherein the reactive polysiloxane is bis (vinyl-alkoxysilyl) polysiloxane or bis (vinyl- dialkoxysilyl) polysiloxane provides an anti-stick coating.

Therefore, the construction of electric poles, distribution pipes, traffic lights and street lights, and illegal advertisements attached to doors and walls are prevented at the source to create a pleasant urban environment.

Anti-stick coating, silicone coating, anti-fouling coating

Description

Coating compound for preventing attachment

The present invention relates to an anti-adhesive coating, and more particularly, to an anti-adhesive coating that prevents the attachment of illegal advertisements such as stickers attached to the telephone poles and distribution pipes installed on the walls and the gates and the main streets of ordinary homes.

As is generally known, many illegal stickers made for commercial use are affixed to traffic lights, power distribution pipes, telephone poles and walls and gates of ordinary homes.

The illegal stickers attached as such are divided into garbage, which in turn hinders the aesthetics of the city and is a major cause of environmental pollution.

Therefore, employees of the ward offices and related departments of the government have to organize a lot of labor and budget to periodically remove illegal stickers, which not only wastes a lot of budget and labor but also the adhesive layer of illegal stickers contaminates and corrodes the adherend. It is difficult to maintain the original form for a long time because it is.

Previously introduced in Korean Utility Model Registration No. 186914 and Korean Patent Application No. 2000-0186914 as a method using plastic, it made difficult to attach stickers by making a large number of protrusions on the surface of the plastic, but this is not good in appearance and plastic in winter This breakage can have a bad effect on the surroundings, the construction cost was about four times more expensive than the general coating.

In addition, the anti-sticking agent using the cooking oil introduced in Korean Patent Publication No. 2000-0036990 has the effect of temporarily preventing illegal stickers from being attached, but not only the degree of contamination of the adherend used is too severe, There is a tendency to attach a large amount of foreign matter such as dust and give aesthetic disgust.

In addition, the conventional Korean Patent 2001-0090053 has been proposed a method of using a jelly-like silicon, but should be used to put the sawdust before use, there is a problem that brings the inconvenience of the worker and the increase in labor costs.

In addition, the silicone resin used at this time not only has a low crosslinking degree to dry at room temperature, but also sawdust used as an additive may cause rotting by rain water when exposed to the outside as a coating agent for a long time. There is a lot of difficulties in workability due to aggregation. In addition, when exposed to the outside has a disadvantage of easily falling apart.

In addition, Korean Patent No. 2001-008777 introduced an anti-adhesive coating agent using a room temperature-curable polysiloxane and Korean Patent Publication No. 237856 using an organopolysiloxane. This silicone resin uses a platinum catalyst as an oligomer having a vinyl group and a silicon hydride compound. Although it is possible to cure at room temperature, the reaction rate is fast and the storage property is difficult as a one-component type. Since such polysiloxane has to use an oligomer having a vinyl group as a special functional group, the manufacturing cost tends to be much higher than that of general polysiloxane. Therefore, such polysiloxane is not suitable as an anti-adhesion resin used universally.
In addition, Japanese Patent Application Laid-Open No. 5-33273 prepared a release coating agent composed of reactive polysiloxane, a crosslinking agent, a filler, calcium carbonate, linseed oil, soy milk, and used it as an anti-sticking agent. As a result, the tacky is increased, and the sticker has a property of sticking.

Therefore, an object of the present invention is to solve the problems of the coating and the like proposed in order to prevent the sticking of the conventional and illegal stickers, illegal advertisements, such as telegraph poles or distribution pipes and the walls or doors of general houses that are the construction of the main road It is to provide an anti-adhesion coating to prevent the adherend to be corroded and contaminated by a sticker or the like so as not to stick.

Another object of the present invention is to provide an anti-adhesion coating agent that creates a clean urban environment by preventing the illegal stickers from being attached to various structures.

The first technical solution for achieving the above object is characterized by comprising a silicone resin, a silicone polyester leveling agent, a plastic filler, a sedimentation inhibitor and a solvent.

As a second technical solution, the silicone resin is characterized in that it comprises a reactive polysiloxane, titanium dioxide, carbon black and a plasticizer.

As a third technical solution, the reactive polysiloxane is bispolysiloxane composed of at least one of hydroxysilyl, vinyl-alkoxysilyl or methyl-alkoxysilyl.

The present invention is 20 to 35 parts by weight of reactive polysiloxane, 5 to 20 parts by weight of single-ended reactive polysiloxane plasticizer, 0.5 to 2.0 parts by weight of silicone polyester, 3.0 to 4.0 parts by weight of polyethylene filler and 0.2 to 1.0 parts by weight of antisettling agent, 40 to solvents. 55 parts by weight, wherein the reactive polysiloxane is bis (vinyl-alkoxysilyl) polysiloxane or bis (vinyl- dialkoxysilyl) polysiloxane provides an anti-stick coating.
Here, the reactive polysiloxane may be a bispolysiloxane composed of vinyl to methyl dialkoxysilyl, that is, bis (vinyl-alkoxysilyl) polysiloxane or bis (methyl-alkoxysilyl) polysiloxane. When the reactive siloxane is less than 20 parts by weight, the degree of crosslinking is too low. When the amount of the reactive siloxane is 35 parts by weight or more, the degree of crosslinking is high.

In addition, the plasticizer is characterized by using a single-ended reactive silicone oil, the use range is 5 to 20 parts by weight is suitable, 15 to 20 parts by weight is preferred. If it is 5 parts by weight or less, the remaining functional groups reacted with the reactive siloxanes remain contaminated, and if it is 20 parts by weight or more, the reactivity decreases and the hardness decreases.

In addition, silicone polyester is added as a leveling agent to improve roll coating properties. The content of the silicone polyester may be 0.5 to 2.0 parts by weight. If the content of the silicone polyester is less than 0.5 parts by weight, the releasability is not good at the time of roll coating, if more than 2.0 parts by weight there is a problem of poor interlayer adhesion.
The polyethylene filler is a filler of 50 to 60 microns in size, the content of the polyethylene filler in the anti-stick coating is characterized in that 3 to 4 parts by weight.
The content of the anti-settling agent is preferably 0.2 to 1.0 parts by weight. If the amount of the anti-settling agent is less than 0.2 parts by weight, precipitation occurs during the preparation of the coating agent, and if it is 1.0 parts by weight or more, aggregation may occur.
The solvent may be an aliphatic solvent, the content of the solvent is preferably 40 to 55 parts by weight. When the content of the solvent is less than 40 parts by weight, the viscosity is high, the workability is bad, and when it exceeds 55 parts by weight, hiding power is lowered.

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Hereinafter, the present invention will be described in detail through preferred examples and comparative examples.

The present invention is to prepare a resin by mixing a reactive silicone oligomer, single-ended reactive silicone oil, silane crosslinking agent, titanium dioxide, fumed silica, silicon leveling agent, organometallic catalyst, filler, additives, in consideration of coating workability Dilution with a solvent for the solid content to prepare a silicone coating for preventing adhesion.

When the present invention is described in detail, a reactive organopolysiloxane resin is prepared, followed by mixing additives and diluting the solvent, dividing the coating twice into 50 to 60 μm thicknesses so that the final dry coating is 100 to 120 μm.

In the present invention has been developed a room temperature curing silicone coating composition that maintains antifouling for a long time.

In general, polysiloxane, which is mainly used as a sealant and a coating agent, is widely used for construction in order to give waterproofness and water repellency. In addition, since silicon has a low surface tension and has many characteristics as a release agent, it is widely used in industrial applications.

In addition, the room temperature-curable polysiloxane manufactures a silicone resin with reactive polysiloxane, non-reactive silicone oil, fumed silica, and additives, and in the case of this coating agent, non-reactive silicone oil is drawn to the surface and external dust Sticking together, serious pollution and poor release properties.

However, in the case of the anti-adhesive coating according to the present invention, a single-ended reactive silicone oil was used, and a special silicone oil was used in which oil did not lead to the surface even when exposed to the outside for a long time. This may be due to the reaction of the reactive polysiloxane and the single terminal reactive silicone oil to form crosslinks with each other.

In addition, the present invention prepared a silicone coating agent for preventing adhesion using an aliphatic solvent to the silicone resin prepared above. Although solvents include aromatic xylene and toluene, aliphatic solvents were used because of poor workability and environmental properties. At this time, the solvent was used in a ratio of 1: 1 to 1: 1.5 by weight relative to the silicone resin, and if the amount of the solvent is larger than that, the hiding power is lowered, and when the solvent is lowered, the viscosity is high, so the workability is poor and the brush marks remain poorly aesthetically.

After removing dust and contaminants of the object first, paint it with a brush coating at a thickness of about 60 μm at one time, and after 1 hour, check that the coating is sticky, and then make the coating twice with a thickness of about 60 μm. This finishes the painting.

If the coating layer is thin, the hiding power of the existing contaminants is reduced and the plastic filler (polyethylene) used as an additive is likely to be lost, and its original properties are easily lost. Plastic fillers used in the present invention should generally use a filler of 50 to 60 microns, in order to have compatibility with the resin and long-term concealment effect, if the size is less than 50 microns, the releasability of the sticker is lowered, if more than 60 microns is contaminated Fillers of 50 to 60 micron size are suitable because of the problem.

In addition, the filler used in the present invention does not have the disadvantage of sinking like a sawdust or silica sand, which is conventionally used or divided into two, and has the advantage that it can be directly mixed into a one-component type. This additive has a very special property that prevents the sticking of the sticker even if it is mixed with the silicone resin and is drawn very finely into the final coating.
The plastic filler is suitably in a weight ratio of 3 to 4 parts by weight relative to the silicone coating solution, but if less than this, the release property of the sticker is lowered, and the manufacturing cost increases as the manufacturing cost increases, resulting in a disadvantage of poor workability.

In order to examine the effect of the anti-adherent coating according to the present invention, a release test and a stain resistance test were performed in the following.

The silicone resin contained in the anti-sticking coating agent according to the present invention is produced by the following method.

<Silicone Resin (I) Manufacturing>

35.33 g of bis (hydroxy-silyl) polysiloxane (50,000 cps), 0.50 g of titanium dioxide, 0.02 g of carbon black, 19.98 g of single-ended reactive silicone oil were added and mixed well for 5 minutes while rotating at 100 RPM. It was improved to 150RPM and 35.31g of calcium carbonate and reacted under vacuum for 10 minutes, 4.04g of fumed silica was added and stirred for 10 minutes. 3.53 g of the silane crosslinking agent was added thereto, followed by stirring for 1 minute, followed by stirring under vacuum for 15 minutes to remove the unreactive crosslinking agent. 1.02 g of a silane coupling agent and 0.25 g of an organometallic catalyst were added thereto, and the reaction was completed by stirring under vacuum for 10 minutes under the same reaction rate to obtain a silicone resin (I).
<Silicone Resin (II) Manufacturing>

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Bis (vinyl-alkoxysilyl) polysiloxane (40,000 cps) 26.03 g Titanium dioxide 0.37 g, carbon black 0.02 g, single-terminal reactive silicone oil 14.03 g was added sequentially and stirred at 150 RPM for 10 minutes, and then the reaction rate was 150 RPM. Then, 26.10 g of calcium carbonate was added thereto and stirred for 5 minutes. Check the state of the resin and evacuate by vacuum for 10 minutes. Then add 2.98 g of fumed silica and vacuum for 15 minutes with stirring. 1.50 g of hexamethyldisilazane and 4.57 g of a silane crosslinker were added thereto, and the mixture was stirred for 1 minute and then vacuumed for 10 minutes. Finally, 0.75 g of the silane coupling agent and 0.20 g of the organometallic catalyst were premixed and added, followed by stirring for 10 minutes to obtain silicone resin (II).

<Silicone Resin (III) Manufacturing>

32.68 g of bis (methyl-alkoxysilyl) polysiloxane (50,000 cps), 0.40 g of titanium dioxide, 0.01 g of carbon black, 15.31 g of single-ended reactive silicone oil were added in this order, stirred at 110 RPM for 10 minutes, and the reaction rate was 150 RPM. Put 32.30 g of calcium carbonate and stir for 5 minutes to check the resin state, and then vacuum for 10 minutes. Then, 3.17 g of the surface-treated fumed silica was added and vacuum degassed for 15 minutes. After the silane crosslinking agent was added, the reaction was carried out for 1 minute and then vacuumed for 10 minutes. Finally, 0.61 g of the silane coupling agent and 0.18 g of the organometallic catalyst were added thereto, followed by reaction for 15 minutes to obtain silicone resin (III).

Therefore, the anti-adhesive coating agent according to the present invention prepared as described above and the general anti-adhesive coating agent coated on the telephone pole with the anti-adhesive coating composition prepared above in a 120㎛ thickness and after 24 hours to dry the stickers to check the falling time The release test was conducted and the contamination rate test was conducted by checking the contamination rate by time. ("0: no pollution, △: less than 20% contamination, ■: less than 50% pollution, ■■: contamination) More than 50% "

Example 1

100.0 g of the silicone resin (I) synthesized above, 1.3 g of silicone polyester leveling agent, 3.8 g of plastic filler, 0.5 g of anti-settling agent, and 85.0 g of solvent were used to prepare an anti-stick silicone coating agent. The coating agent was applied to the street lamps and telephone poles of the main street twice with a thickness of 120 μm, and after 24 hours, the sticker was released. Pollution resistance was 1 month (o), 2 months (o), 3 months (o), 4 months (△).

Example 2

98.6 g of the silicone resin (II) synthesized above, 1.2 g of silicone polyester leveling agent, 3.6 g of plastic filler, 0.4 g of anti-settling agent, and 82.5 g of solvent were used to prepare an anti-stick silicone coating agent. The coating agent was applied to the street lamps and telephone poles of the main street twice with a thickness of 120 μm and after 24 hours, the sticker was released. Pollution resistance was 1 month (o), 2 months (o), 3 months (0), 4 months (o), 5 months (△).

Example 3

95.8 g of the silicone resin (III) synthesized above, 1.1 g of silicone polyester leveling agent, 3.4 g of plastic filler, 0.3 g of antisettling agent, and 82.0 g of solvent were used to prepare an anti-stick silicone coating agent. The coating agent was applied to the street lamps and telephone poles of the main street twice with a thickness of 120 μm and after 24 hours, the sticker was released. The stain resistance was 1 month (o), 2 months (o), 3 months (0), 4 months (o), 7 months (△), 8 months (■).

Comparative Example 1

60 to 75g of acrylic resin (50% solution), silicon leveling agent 1.0 to 2.3g, filler 4.5 to 5.0g, antifoaming agent 1.0 to 2.0g, toluene 4 to 5g to prepare an anti-stick acrylic coating agent. If this coating agent is applied to the whole body pole at 60㎛ thickness once, and there is no stickiness after 2 hours of drying, it is applied to the same thickness twice, and after confirming the release property of the sticker after drying for 24 hours, it is stuck for more than 10.0 hours. There was little.

Pollution resistance was 1 month (o) 2 months (△), 3 months (■) After 1 month was found that the pollution is serious.
Comparative Example 2

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70 to 78 g of urethane resin (48% solution), silicon leveling agent 1.0 to 1.5 g, filler 3.5 to 4.0 g, sedimentation inhibitor 0.2 to 0.3 g, toluene 2.0 g, xylene 2.5 to 3.0 g Prepared. If this coating agent is applied to the whole body pole at 60㎛ thickness once, and it is not sticky after drying for 2 hours, it is applied to the same thickness twice and dried for 24 hours after checking the release property of the sticker. There was almost no. Pollution resistance was 1 month (o) 2 months (o), 3 months (△) After 2 months was found that the pollution is serious.

As such, it will be appreciated that the technical field to which the present invention pertains may be embodied in other specific forms without changing the technical method or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the foregoing description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, it is possible to attain a clean urban environment by preventing the illegal stickers from being attached to the buildings such as telephone poles, street lamps, power distribution pipes, and general walls and gates.

In addition, the present invention is economically advantageous because it can reduce the cost more than half than the general anti-sticking of the general banding type, it has the effect of having physical properties superior in releasability and pollution resistance than the general organic coating agent.

Claims (8)

20 to 35 parts by weight of reactive polysiloxane, 5 to 20 parts by weight of single-ended reactive polysiloxane plasticizer, 0.5 to 2.0 parts by weight of silicone polyester, 3.0 to 4.0 parts by weight of polyethylene filler and 0.2 to 1.0 parts by weight of antisettling agent, 40 to 55 parts by weight of solvent Include, The reactive polysiloxane is a bis (vinyl-alkoxysilyl) polysiloxane or a bis (methyl-alkoxysilyl) polysiloxane. delete delete delete The anti-stick coating agent according to claim 1, wherein the plasticizer reacts with the reactive polysiloxane to exhibit low fouling properties. delete delete delete