KR20040083815A - Coating Compound for preventing attachment - Google Patents

Abstract

PURPOSE: An anti-adhesive coating agent is provided to prevent the adhesion of illegal advertising stickers, which is economical and excellent in releasability and pollution resistance. CONSTITUTION: The anti-adhesive coating agent comprises a silicone resin, a silicone polyester leveling agent, a plastic filler, a precipitation preventer, and a solvent. The silicone resin contains a reactive polysiloxane, titanium oxide, a carbon black, and a plasticizer. And the plastic filler has a size of 50-60 micron and the weight ratio of the plastic filler is 0.03-0.04%.

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 plurality of protrusions on the surface of the plastic, but this is not aesthetically good 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 are many 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 organic polysiloxane. Although it is possible to cure at room temperature, the reaction rate is fast and the storage property is difficult as a one-part type, and the polysiloxane has a tendency to be much higher than the general polysiloxane because an oligomer having a vinyl group, which is a special functional group, must be used. 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.

A first technical solution for achieving the above object is characterized in that it comprises 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 characterized in that it is a bispolysiloxane composed of at least one of hydroxy-silyl or vinyl-dialkoxysilyl or methyl-alkoxysilyl.

More preferably, the reactive polysiloxane is bispolysiloxane composed of vinyl-alkoxysilyl.

In addition, the plasticizer is preferably characterized by using a single-ended reactive silicone oil.

In addition, the plastic filler is a filler of 50 to 60 microns in size, the weight ratio of the plastic filler in the coating for preventing adhesion is characterized in that the 0.03% to 0.04%.

And it is preferable that it contains 20-35 weight part of reactive silicone oligomers, 5-20 weight part of single-terminal reactive dimethylpolysiloxane, 3-5 weight part of additives, 3-4 weight part of fillers, and 40-55 weight part of solvents. Do.

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

The present invention is 20-30% reactive silicone oligomer, 10-25% single-ended reactive silicone oil, 4-7% silane crosslinker, 20-35% titanium dioxide, 4-6% fumed silica, 0.5-1.5% silicone leveling agent , Silicone resin composed of 0.1-0.5% of organometallic catalyst, 3.0-4.2% of filler, 3.0-5.0% of additive, and dilution of 45-50% solvent to solid content in consideration of painting workability Was prepared.

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

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 provide waterproofing 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 agent according to the present invention, a single-ended reactive silicone oil was used, and a special silicone oil that did not lead to oil even when exposed to the outside for a long time was used. This may be due to the reaction between the reactive polysiloxane and the single terminal reactive silicone oil to form a polymer 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. The solvent is aromatic xylene, toluene, etc., but because of poor workability and environmental properties, an aliphatic solvent was used. 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 with 60um thickness at one time with brush painting, and after 1 hour, check the stickiness of the coating, and make the final coating thickness 100-120um with 2 times of coating at about 60um. Finish 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 50 microns or less, the releasability of the sticker is less than 60 microns or more contaminants. Because of the problem, fillers of 50 to 60 microns are adequate.

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 titrated in the range of 0.03% to 0.04% by weight with respect to the silicone coating solution, but less than this, the release property of the sticker is lowered, and the manufacturing cost is increased due to a higher manufacturing cost, which results 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>

Into the reactor, 35.33 g of bis (hydroxy-silyl) polysiloxane (50,000 cps), titanium dioxide 0.50 g, carbon black 0.02 g, single-ended reactive silicone oil 19.98 g, mixed well for 5 minutes while rotating at 100 RPM, and then reaction rate The reaction mixture was improved to 150 RPM, and 35.31 g of calcium carbonate was added and reacted under vacuum for 10 minutes. Then, 4.04 g 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>

Bis (vinyl-alkoxysilyl) polysiloxane (40,000 cps) 26.03 g titanium dioxide 0.37 g, carbon black 0.02 g 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 and the general anti-adhesive coating agent according to the present invention prepared as described above coated with 120um thickness of the anti-adhesive coating composition prepared above in the telephone pole and dried for 24 hours to check the falling time by attaching a sticker The test was conducted, and the contamination rate test was conducted by checking the contamination rate by time. ("0: no pollution, △: less than 20% pollution, ■: less than 50% pollution, ■■: 50 pollution" "% More than"

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 poles of the main street with a 120um thickness twice, and after 24 hours, the sticker was released. Pollution resistance was 1 month (o), 2 months (o), 3 months (o), 4 months (△).

Example 2

The anti-adhesive silicone coating agent was prepared using the synthesized silicone resin (II) 98.6g, silicone polyester leveling agent 1.2g, plastic filler 3.6g, sedimentation inhibitor 0.4g and solvent 82.5g. The coating agent was applied to the street lamps and poles of the main street with a 120um thickness twice, 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

The silicone coating agent for preventing adhesion was prepared by using the synthesized silicone resin (III) (95.8g), silicone polyester leveling agent 1.1g, plastic filler 3.4g, sedimentation inhibitor 0.3g and solvent 82.0g. The coating agent was applied to the street lamps and poles of the main street with a 120um thickness twice, and after 24 hours, the sticker was released and confirmed that the sticker was released within 0.1 seconds. The stain resistance was 1 month (o), 2 months (o), 3 months (0), 4 months (o), 7 months (△), 8 months (■).

Comparative Example 1

In the reactor 60-75g acrylic resin (50% solution), silicon leveling agent 1.0-2.3g, filler 4.5-5.0g, antifoaming agent 1.0-2.0g, toluene 4-5g to prepare an anti-sticking acrylic paint. If this coating agent is applied to the whole body pole at 60um thickness once and dried for 2 hours, if there is no stickiness after coating for 2 hours, the same thickness is applied twice to confirm the mold release property after drying for 24 hours. There was no.

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

Comparative Example 2

In the reactor, 70-78 g (48% solution) of urethane resin, silicon leveling agent 1.0-1.5 g, filler 3.5-4.0 g, sedimentation inhibitor 0.2-0.3 g, toluene 2.0 g, xylene 2.5-3.0 g Prepared. If this coating agent is applied to the whole body column at 60um thickness once and dried for 2 hours, if there is no stickiness after coating for 2 hours, the same thickness is applied twice for 24 hours to confirm the releasability of the sticker. There was little. 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)

An anti-adhesion coating agent comprising a silicone resin, a silicone polyester leveling agent, a plastic filler, a sedimentation inhibitor and a solvent. The method of claim 1, The silicone resin is a coating for preventing adhesion, characterized in that it comprises a reactive polysiloxane, titanium dioxide, carbon black and a plasticizer. The method of claim 2, The reactive polysiloxane is anti-adhesive coating, characterized in that the bispolysiloxane composed of at least one of hydroxy-silyl or vinyl-dialkoxysilyl or methyl-alkoxysilyl. The method of claim 3, wherein The reactive polysiloxane is an anti-stick coating agent, characterized in that the bispolysiloxane composed of vinyl-dialkoxysilyl. The method of claim 2, The plasticizer is an anti-stick coating, characterized in that using a single-ended reactive silicone oil. The method of claim 1, The plastic filler is a coating for preventing adhesion, characterized in that the filler of 50 ~ 60 microns in size. The method of claim 1, Anti-adhesion coating agent, characterized in that the weight ratio of the plastic filler in the anti-adhesive coating agent is 0.03% to 0.04%. Anti-adhesive coating agent comprising 20 to 35 parts by weight of reactive silicone oligomer, 5 to 20 parts by weight of single-ended reactive dimethylpolysiloxane, 3 to 5 parts by weight of additive, 3 to 4 parts by weight of filler, and 40 to 55 parts by weight of solvent. . An initial operation process of driving the fan 5 by the microcomputer 1 to balance the temperature of the air inside the heating chamber 4, After a certain time has elapsed during this initial operation, the temperature of the outlet air of the heating chamber is detected and stored at an initial temperature. Then, the magnetron 3 is driven to detect the temperature of the outlet air at a predetermined time interval. After storing in the arithmetic average of the current temperature and the previous temperature detected and stored before the turntable cycle of the turntable 4a at the present time, the arithmetic average temperature is increased by only one temperature increase set by the plant type. One-step heating process of heating, Thereafter, a heating value is obtained by raising a predetermined value set by the type of plant at this one-stage heating time, and a two-stage heating process for performing two-stage heating during this heating time. .