KR20170078933A - Apparatus for preparing the sealant composition and method for manufacturing the sealant composition using it - Google Patents

Abstract

The present invention relates to an apparatus for producing a sealant composition and a method for preparing the same, and more particularly, to a method for producing a modified silicone sealant composition containing a modified silicone as a main component, A manufacturing apparatus comprising a dissolver-type stirrer provided with a paddle having a U-shaped blade in the direction of the axis and a temperature controlled water jacket added thereto, and a process for producing a sealant composition using the apparatus ≪ / RTI > When the apparatus and the method of the present invention are used, the dispersing effect due to the stirring of the high viscosity raw material component can be remarkably improved, and the dispersibility is very excellent through the stirring speed of the stirrer, stirring time, A high-quality sealant composition can be stably produced.

Description

[0001] The present invention relates to an apparatus for preparing a sealant composition and a method for preparing the sealant composition using the same,

The present invention relates to an apparatus for producing a sealant composition and a method for preparing the same, and more particularly, to a method for producing a modified silicone sealant composition containing a modified silicone as a main component, To a dissolver having a paddle with a U-shaped wing in the direction of the thickness of the molten metal, and further comprising a temperature controlled water jacket, and a method of producing the sealant composition using such a device .

Sealant is an elastomeric sealing material that prevents buildings from being shortened due to the effects of climate such as high temperature and humidity in the building. It is also used as a sealant to fill the joints and gaps in the building to maintain waterproof and airtightness. Which is an important material used in the process of the present invention.

The mixed component used to prepare the sealant composition is composed of a silicone compound and various additives. In order to uniformly disperse the mixed components of such a sealant composition, a manufacturing apparatus equipped with an agitating device is used.

However, as additives to be added to the sealant composition become various, it is not easy to include various additives in the sealant. That is, for the production of a sealant, a cross-linking agent and a viscosity enhancer are added to a liquid silicone having a viscosity of about 50,000 cps and stirred to increase the viscosity to about 1,000,000 cps. Therefore, in order to produce a high-viscosity sealant composition, it is difficult to expect a uniform dispersion effect in a planetary structured batch mixer (stirrer), which is a problem that it is difficult to produce a high quality sealant.

The most common general sealant used in the construction site is a chemical odor after construction, which causes harmful environmental hormones to the human body. Recently, there has been a need for environmentally friendly materials throughout the construction materials.

For this reason, there is a growing interest and demand for 'modified silicone (MC) sealant' which is an eco-friendly sealing material mainly composed of environmentally modified silicone (organopolysiloxane having organosiloxane) in the sealant.

In the case of such a modified silicone-based sealant, there is almost no contamination by stone (granite), good elasticity, excellent weather resistance, durability, and surface coating, so that it is attracting attention as an eco-friendly sealant.

In other words, the modified silicone sealant is a sealing material of diverse materials because it has the coating property which is the merit of urethane sealant, and it has elasticity restoration ability, excellent weather resistance and maximum adaptability to external environment (weather, temperature, UV resistance) Has been widely used in Japan and the like.

In addition, due to the strengthening of the safety management of buildings, the demand of special sealant for fire prevention of buildings such as flame prevention sealant is gradually increasing.

However, in the case of a modified silicone-based sealant composition, it is necessary to cure it slowly and to mix it in the liquid form in the manufacturing process, and it is more difficult to uniformly disperse the mixed components as compared with other sealants in that a designated primer should be used.

In particular, due to the increasing demand for various high-performance sealants as described above, it is urgent to develop a manufacturing method for adjusting the ratio of raw materials and the content of various additives suitable for each function in order to manufacture a high-function sealant. Among them, in order to sufficiently disperse and mix the additive material in the raw material component constitution made of such a modified silicon-based mixed component, there is required a production apparatus having a high-dispersion type special stirring apparatus for stirring the sealant composition having a high viscosity of usually 1,000,000 cps The demand for such devices is increasing.

Korean Patent No. 10-1179201 discloses an agitator capable of pulverizing and stirring an object to be stirred in a stirring tank. The agitator includes a rotating agitating blade rotating in the agitating tank, And a stationary stirring blade protruding in the direction of the rotating shaft from the stationary stirring blade.

However, this stirrer is configured to perform both pulverization and stirring at the same time, and it is difficult to apply it to the dispersion of a high viscosity mixed component such as a sealant composition.

In addition, a planetary structured batch mixer (stirrer) having a shape in which the stirring blades are simplified in one direction as shown in Fig. 1 is used in the construction of a stirring device used for producing a sealant composition at present.

However, such a conventional stirrer apparatus has a problem in that it can not uniformly disperse various additives contained in a high viscosity silicon mixed component. That is, when the sealant is manufactured by using the existing planetary structural stirrer, the physical property deviation occurs by batch or lot. In addition, since the reaction state varies in the mixing of materials having different specific gravity and characteristics of various raw materials in the production of silicon, there arises a problem of physical properties due to a technical limitation that can not achieve a sufficient dispersing effect.

Korean Patent No. 10-1311189 discloses a method for producing a sealant composition for a fireproofing material. The silicone compound base resin is compounded at 100 to 200 ° C for 5 to 6 hours, and a carbon black master batch is added thereto. Lt; 0 > C for 30 to 45 minutes.

However, such a preparation method can be expected to improve the properties of the sealant composition, but there is room for improvement in terms of the method in the manufacturing apparatus and the kneading process since the improvement of the stirrer used in the kneading process is not reflected at all. Particularly, in order to improve the dispersibility and physical properties of the sealant composition, it is required to improve the application of the stirrer and the conditions of the manufacturing process.

Korean Patent No. 10-1179201 Korean Patent No. 10-1311189

In order to solve the problems of the prior art as described above, the present invention provides an apparatus for improving dispersibility of a sealant composition by improving conditions for stirring a mixed component of a silicone compound and an additive, As a solution to the problem.

Accordingly, an object of the present invention is to provide an apparatus for manufacturing a sealant composition that is a new stirrer used in the production of a sealant composition.

Another object of the present invention is to provide a sealant composition manufacturing apparatus which further improves the dispersibility by providing a water jacket on the outside of the agitator to be used for producing the sealant composition, .

Another object of the present invention is to provide a method for producing a sealant composition having more efficient and excellent dispersibility by using the above-described apparatus for producing a sealant composition.

In order to solve the above problems, the present invention provides an apparatus for producing a sealant composition comprising a stirrer for stirring and dispersing a mixed component constituting a sealant composition in a process of producing a sealant composition, A pair of rotatable paddles are provided in each of the paddles, and each of the paddles is provided with wings provided with four U-shaped grids facing each other, The inner bottom of the mixing vessel is provided with a predetermined lattice spacing and slope along the bottom of the mixing vessel and below the middle of the mixing vessel, The stirring member is provided so as to be rotatable, so that during the rotation of the stirring member, Standing arranged paddle of the pair are rotatably provides a device for manufacturing a composition consisting of a sealant.

According to a preferred embodiment of the present invention, the manufacturing apparatus further comprises a water jacket installed to be able to adjust the temperature in the form of being wrapped around the outer side surface of the cylindrical mixing vessel, wherein the water jacket is covered with a heat insulating material The inner surface of the water jacket is closely contacted with the wall surface of the mixing vessel. The water jacket is provided with hot and cold water supply pipes for supplying hot water or cold water, and a heat exchange liquid is supplied to the inside of the mixing container to transfer heat generated from the hot / Including those that are charged.

In addition, the present invention provides a method for producing a sealant composition, comprising: preparing a sealant composition using the apparatus for producing a sealant composition containing the stirrer, the method comprising: a step of injecting a silicon compound and additives into the mixing vessel; A raw material mixing step of rotating a pair of paddles provided in the mixing vessel under vacuum while rotating the stirring member at 100 to 500 rpm while rotating the stirring member at 100 to 500 rpm while mixing the raw materials while injecting the raw material; And maintaining the internal temperature of the mixing vessel at 100 to 200 DEG C using the water jacket during the execution of the raw material mixing step to produce a sealant composition.

According to the present invention, by improving the structure of the stirrer in the apparatus used for producing the sealant composition, the dispersibility of the high viscosity silane composition having a viscosity level of 1,000,000 cps in the raw material mixing process of the sealant composition can be improved.

Particularly, while it is easy to set the conditions according to the manufacturing process characteristics such as temperature, stirring rpm, stirring time, cooling and the like which are process conditions necessary to enable effective dispersion of additives difficult to disperse in mixing of high viscosity raw material components, The effect of improving the acidity is excellent.

Further, according to the apparatus configuration and the manufacturing method according to the present invention, the use of the water jacket having a specific constitution makes it possible to produce a sealant composition of high quality physical property without any change in physical properties during the manufacturing process, There is a possible effect.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a diagrammatic representation of a stirrer structure applied in an apparatus used in the manufacture of conventional sealant compositions.
2 is a diagram schematically illustrating an embodiment of a configuration of a stirrer applied to an apparatus for producing a sealant composition according to the present invention.
3 is a view showing the construction of a water jacket which is additionally mounted outside the mixing vessel of the stirrer according to the present invention.
4 is an image showing simulation results of a longitudinal vector according to a stirring state when the conventional stirrer (conventional wing) shown in FIG. 1 and the stirrer (improved wing) structure according to the present invention shown in FIG. 2 are applied.
5 is an image showing a result of a stream line simulation according to a stirring state when the conventional stirrer (conventional wing) shown in FIG. 1 and the stirrer (improved blade) structure according to the present invention shown in FIG. 2 are applied.
FIG. 6 is an image showing the result of simulation of the velocity distribution according to the stirring state when the conventional stirrer (conventional wing) shown in FIG. 1 and the stirrer (improved blade) structure according to the present invention shown in FIG. 2 are applied.
7 is an image showing the result of a comparison of the convective heat transfer state of the sealant liquid according to the stirring state of the conventional stirrer (conventional wing) of FIG. 1 and the stirrer (improved blade) structure of FIG. 2 according to the present invention .

Hereinafter, the present invention will be described in more detail as an embodiment.

The present invention relates to a manufacturing apparatus including a stirrer used for manufacturing a sealant composition, and is characterized in that the structure of the blade of the stirrer is different from that of the prior art.

1 is a diagram schematically showing a structure of a stirrer applied in a conventional apparatus for producing a sealant composition.

1, the conventional stirrer 10 is composed of a stirrer having a pair of blades 40a and 40b, each of which is a shaped lattice 30 that rotates in a cylindrical container 20. The stirrer 10 having such a conventional wing stirs the sealant composition in the mixing vessel 20 while the wings 40a and 40b rotate in the same direction so that the sealant raw material components are mixed and dispersed.

In the present invention, a new stirrer having different wing structures is proposed in the conventional stirrer.

2 is a diagram schematically illustrating an embodiment of a configuration of a stirrer applied to an apparatus for producing a sealant composition according to the present invention.

According to a preferred embodiment of the present invention, the stirrer 100 of the present invention having an improved blade is provided with a pair of rotatable paddles 300a and 300b in a cylindrical mixing vessel 200, The lower ends of the paddles 300a and 300b may be provided with vanes 400a and 400b having four U-shaped gratings facing each other in four chambers. These four U-shaped gratings are installed on the paddles 300a and 300b so that individual gratings form a quadrangular grating structure.

According to a preferred embodiment of the present invention, the blades 400a and 400b of the C-shaped grid of each of the paddles 300a and 300b are arranged such that the four C-shaped grids are inclined at an angle of 20 to 50 degrees, (A) of 25 to 35 degrees and inclined at the same angle, so that the wings 400a and 400b are structured to be twisted in one direction as a whole, thereby further improving the stirring effect.

According to a preferred embodiment of the present invention, the four U-shaped gratings constituting the wings of the paddles 300a and 300b have inclination angles opposite to the rotation direction in accordance with the rotating direction of the paddles 300a and 300b .

2, such a pair of paddles 300a and 300b may be installed such that the two paddles 400a and 400b are located at the same height, but they may be located at different heights.

According to a preferred embodiment of the present invention, the positions of the paddles 300a and 300b of the agitator 100 are most preferably the positions of the paddles 300a and 300b of the stirrer composition 200 filled in the mixing vessel 200, And 3/2, respectively, with respect to the height of the mixed raw material, and it is preferable that they are provided at positions 3/1 and 3/2 on the left and right with respect to the diameter of the mixing vessel 200. It is preferable that the paddles 300a and 300b are positioned in consideration of the height and the interval of the paddles 300a and 300b from the viewpoint of the stirring effect.

The structure of the blades 400a and 400b of the stirrer 100 according to the present invention is characterized by a dissolver type stirrer completely different from the structure of the wings 40a and 40b of the conventional stirrer 10, An excellent dispersion effect which can not be achieved by conventional stirrers can be obtained even for a composition component having a high viscosity.

According to the present invention, the shape of the vanes 400a and 400b is a very characteristic structure, which is characterized by the rotational power of the agitator, average flow rate, stream line and velocity distribution analysis, fluid flow resistance, turbulent kinetic energy, Deformation rate, stirring condition, and the like, and is designed with the characteristic structure of the present invention in consideration of durability and stability.

According to a preferred embodiment of the present invention, the bottom of the mixing vessel 200 is installed with a predetermined gap and a slope along the bottom of the mixing vessel 210 and the vessel wall 220 below the middle of the mixing vessel An agitating member 500 having an upper opening and a lower light grating structure is rotatably installed.

According to the present invention, the stirring member 500 of the shaped grating structure having the above-mentioned upper light blocking structure has a slope at an inclination angle (b) of 5 to 20 degrees, more preferably 7 to 12 degrees with the wall surface of the mixing vessel 200 . ≪ / RTI > The agitating members 500 may be spaced apart by a predetermined distance, for example, 10 to 50 cm, so as not to touch the container wall 220 of the mixing container 200. However, the interval may vary significantly depending on the size of the mixing vessel 200.

According to the present invention, the stirrer 100 of the present invention includes a pair of paddles 300a, 300b, 300c, and 300d within the rotation radius of the stirring member 500 while the stirring member 500 is rotated in the lower portion of the mixing vessel 200, 300b may be rotatable.

Therefore, when the stirrer 100 is operated after the raw material component of the sealant composition is injected into the mixing vessel 200 according to the present invention, at the center of the mixing vessel 200, vanes 400a And 400b are rotated and stirred, and the stirring member 500 is rotated and stirred at the bottom and the edge of the mixing vessel 200. [

In addition, according to a preferred embodiment of the present invention, the manufacturing apparatus comprises a water jacket (not shown) installed to be able to adjust the temperature in the form of being wrapped around the outer side surface of a cylindrical mixing vessel 200 having the stirrer 100, 600). ≪ / RTI >

According to the present invention, the water jacket 600 can be applied to the mixing vessel 200 in such a manner that its outer surface is covered with a heat insulating material 610 and its inner surface is in direct contact with the outer wall surface of the mixing vessel 200 .

3 is a view showing the construction of a water jacket 600 mounted outside the mixing vessel 200 of the stirrer 100 according to the present invention.

According to a preferred embodiment of the present invention, a cold / hot water supply pipe 620 to which hot water or cold water is supplied is densely arranged inside the water jacket 600.

The cold / hot water supply pipe 620 may have a vertically vertically arranged structure.

The cold / hot water supply pipes 620 of the present invention may be vertically arranged vertically and connected together, or may have several independent connection structures or independent structures.

In addition, the cold / hot water supply pipe 620 of the present invention may be installed to supply cold / hot water separately or separately, depending on the connection structure, but the hot water may be supplied to the upper portion and the cold water may be supplied to the lower portion.

 According to a preferred embodiment of the present invention, the water jacket 600 may be filled with a heat exchange fluid 630 to transfer the heat generated from the cold / hot water supply pipe 620 to the interior of the mixing vessel 200. As the heat exchange liquid 630 used herein, water may be used. When the heat exchange liquid 630 is used, the heat exchange efficiency can be increased when the cold heat or the heat generated in the cold / hot water supply pipe 620 is supplied to the surface of the mixing container 200.

In the case of manufacturing the sealant composition using the manufacturing apparatus including the stirrer according to the present invention, the dispersing effect can be improved by 50% or more as compared with the case using the apparatus using the conventional wing-shaped stirrer.

In order to confirm the dispersion effect of the stirrer having the improved wing structure of the present invention as described above, various simulations were performed in comparison with the conventional wing stirrer. The results are shown in comparison with FIG. 4 to FIG.

4 is an image showing simulation results of a longitudinal vector according to a stirring state when the conventional stirrer (conventional wing) shown in FIG. 1 and the stirrer (improved wing) structure according to the present invention shown in FIG. 2 are applied.

5, 6, and 7 show the results of the simulation of the stream line according to the stirring state with respect to the case where the conventional stirrer (conventional wing) shown in FIG. 1 and the stirrer (improved blade) , The velocity distribution simulation result, and the results of the comparison of the convection heat transfer state of the sealant liquid, respectively.

As a result of the above simulation test, when the wing structure of the stirrer is compared with the case where the existing wing is applied and the stirrer having the structure of the improved wing according to the present invention is applied, the stirrer of the improved structure according to the present invention It was confirmed that the dispersing effect in the mixing and stirring step of the high viscous sealant raw material component was remarkably improved and the stirring effect was very excellent.

Therefore, when the sealant composition is manufactured using the manufacturing apparatus including the stirrer of the improved structure according to the present invention, excellent dispersion effect can be obtained.

In addition, when the temperature is controlled by applying the water jacket described above, it is possible to maximize the uniform dispersion effect, and in particular, to maintain the temperature using hot water or cooling water, Can be manufactured.

The method for producing the sealant composition using the stirrer according to the present invention will be described in detail as follows.

The present invention includes a method for producing a sealant composition using the stirrer according to the present invention as described above.

The method for preparing the sealant composition using the stirrer according to the present invention is as follows.

In the present invention, a silicon compound and an additive are introduced into a mixing vessel of the stirrer to perform a raw material injection step.

According to the present invention, the silicone compound to be used herein can be applied not only to a conventional silicone compound but also to a modified silicone compound.

100 parts by weight of a silicone compound base resin containing, for example, 50 to 70% by weight of a polymethylvinylsiloxane resin, 10 to 30% by weight of silicon dioxide and 10 to 30% by weight of a quartz powder, 10 to 20 parts by weight of a carbon black masterbatch obtained by kneading 25 to 40% by weight of carbon black, 25 to 40% by weight of a silicone resin and 25 to 40% by weight of an organic solvent; 1 to 3000 ppm of an addition reaction catalyst and 5 to 20 parts by weight of an organohydrogenpolysiloxane can be used.

Examples of other raw material components include 30 to 40 wt% of a modified silicone (MS) polymer as a silicon material, 10 to 15 wt% of a silicon plasticizer, 3 to 5 wt% of a crosslinking agent, 15 to 25 wt% of a flame retardant, , An adhesion promoter, a UV stabilizer, and an addition reaction catalyst may be used. As the 15 to 25% by weight of the flame retardant, 5 to 10% by weight of expanded graphite and an ordinary flame retardant corresponding to the remaining content may be mixed with the whole composition.

According to the present invention, the above raw material components can be applied to a stirrer capable of dispersing even when raw materials having a viscosity of 1,000,000 to 1,500,000 cps and having a high viscosity are used.

According to the present invention, the raw material components used in the step of injecting the raw materials may be injected into a mixing vessel equipped with a stirrer in such a manner that a part of the raw materials are mixed in a master batch form. For example, a silicon compound base resin may be separately prepared, and a flame retardant master batch may be separately prepared and mixed.

According to the present invention, a pair of paddles provided in the mixing vessel are rotated at 100 to 500 rpm under vacuum while the raw material is being injected, and the stirring member is rotated at 100 to 500 rpm to disperse the raw materials while stirring Raw material mixing step.

According to a preferred embodiment of the present invention, the rotating direction of each paddle and the stirring member in the stirrer can be configured to rotate in the same direction or in opposite directions to each other. However, it is preferable that the paddles determine the direction of rotation in consideration of the direction in which the wings are inclined.

According to the present invention, it is advantageous for the dispersing effect to rotate the pair of paddles, preferably in opposite directions.

According to a preferred embodiment of the present invention, after the raw material is injected in the mixing step, the mixture is allowed to be in a vacuum state before the agitation can be started. At this time, stirring may be performed by stirring at 100 to 500 rpm, more preferably 300 to 450 rpm.

According to the present invention, the mixing time for the mixing of the raw materials can be 1 to 5 hours, more preferably 2 to 4 hours, and the mixture can be mixed. However, the agitation time can be appropriately adjusted in accordance with the amount of the raw material, the injection method, the stirring speed, and the like.

According to a preferred embodiment of the present invention, when the mixing is completed in the mixing step, the operation of the stirrer can be completely stopped and then the combing operation can be performed. Further, when the shearing operation is completed, stirring is performed again, and the vacuum state is maintained to perform the dispersion effect of the raw material component and bubble removal, and then the vacuum is removed to complete the manufacture of the sealant composition.

According to the present invention, the stirring speed of the paddle and the agitating member may include a step of preparing the sealant composition by maintaining the internal temperature of the mixing vessel at 100 to 200 DEG C using the water jacket during the execution of the raw material mixing step .

Herein, the water jacket is supplied with cold / hot water through a cold / hot water supply pipe, and the supply amount thereof is controlled to maintain the temperature in the mixing container at a desired temperature.

According to a preferred embodiment of the present invention, when the sealant composition is manufactured by using the manufacturing apparatus equipped with the stirrer of the improved structure according to the present invention, the stirrer is composed of the highly viscous sealant of 1,000,000 cps or more, . ≪ / RTI >

Particularly, according to the present invention, due to the structure of the stirrer having the above-described blades, the dispersing effect due to stirring of the highly viscous raw material component can be remarkably improved. Therefore, it is possible to stably produce a homogeneous high-quality sealant composition having excellent dispersibility through controlling the stirring speed, agitation time, and temperature of the mixing vessel of the stirrer having such improved wings.

The apparatus for producing a sealant composition having an agitator according to the present invention is characterized in that a water jacket is mounted on the outer surface of a mixing vessel of a stirrer so that the temperature can be controlled according to the viscosity of the raw material component during agitation, Type sealant can be produced by a single device, thereby increasing the utility of the production facility of the sealant.

10, 100 - stirrer
20, 200 - mixing vessel
210 -
220 - Container wall
30-shaped lattice
40a, 40b, 400a, 400b-wing
300a, 300b - paddle
500 - stirring member
600 - Water jacket
610 - Insulation
620 - Cold and hot water pipe
630 - Heat exchange liquid

Claims (10)

An apparatus for producing a sealant composition comprising a stirrer for stirring and dispersing a mixed component constituting a sealant composition in the process of producing a sealant composition, wherein the stirrer includes a pair of rotatable paddles installed in a cylindrical mixing vessel Wherein the paddles are provided with vanes having four umbrella-shaped gratings facing each other in the four paddles, and an inner lower end of the mixing vessel is provided with a predetermined interval And a pair of paddles are rotatably disposed within the rotation radius of the agitating member while the agitating member is rotated so that the agitating member of the upper light- To form a sealant composition.
[3] The apparatus as claimed in claim 1, wherein each of the paddle blades has four U-shaped gratings inclined at an equal angle to each other at an inclination angle of 20 to 50 degrees obliquely in the same direction, Of the sealant composition.
The apparatus for manufacturing a sealant composition according to claim 2, wherein the four U-shaped gratings constituting the wing of the paddles are configured to have a slope inclined in the opposite direction to the rotation direction in accordance with the direction in which the paddles rotate.
The apparatus for manufacturing a sealant composition according to any one of claims 1 to 3, wherein the pair of paddles are installed such that the wings of two paddles are located at the same height or at different heights.
[Claim 2] The apparatus for manufacturing a sealant composition according to claim 1, wherein the agitating member of the shaped grating structure of the supersonic light blocking structure has a sloped shape with an inclination angle of 5 to 20 degrees with the wall surface of the mixing vessel.
[3] The apparatus of claim 1, wherein the manufacturing apparatus further comprises a water jacket installed so as to be adjustable in temperature in the form of being wrapped around the outer side surface of the cylindrical mixing vessel, wherein the water jacket is covered with a heat insulating material, Hot water supply pipe for supplying hot water or cold water is arranged inside the water jacket and the heat exchange liquid is filled to transfer the heat generated from the hot water supply pipe to the inside of the mixing container ≪ / RTI >
A raw material injecting step of preparing a sealant composition by using the apparatus for producing a sealant composition comprising the stirrer according to claim 1, wherein the raw material containing the silicon compound and the additive is placed in the mixing vessel according to claim 1; A raw material mixing step of rotating a pair of paddles provided in the mixing vessel under vacuum while rotating the stirring member at 100 to 500 rpm while rotating the stirring member at 100 to 500 rpm while mixing the raw materials while injecting the raw material; And maintaining the internal temperature of the mixing vessel at 100 to 200 占 폚 using the water jacket according to claim 6 during the course of the raw material mixing step to produce a sealant composition.
[Claim 7] The method of claim 7, wherein stirring is started at 100 to 500 rpm after the raw material is injected in a vacuum state after the raw material is injected in the raw material mixing step.
8. The method of claim 7, wherein the raw material containing the silicone compound and the additive is 100 parts by weight of a silicone compound base resin containing 50 to 70% by weight of polymethylvinylsiloxane resin, 10 to 30% by weight of silicon dioxide, and 10 to 30% Wow; 10 to 20 parts by weight of a carbon black masterbatch obtained by kneading 25 to 40% by weight of carbon black, 25 to 40% by weight of a silicone resin and 25 to 40% by weight of an organic solvent; 1 to 3000 ppm of an addition reaction catalyst and 5 to 20 parts by weight of an organohydrogenpolysiloxane.
The method according to claim 7, wherein the raw material containing the silicone compound and the additive is selected from the group consisting of 30 to 40 wt% of a modified silicone polymer, 10 to 15 wt% of a silicon plasticizer, 3 to 5 wt% of a crosslinking agent, 15 to 25 wt% A UV stabilizer, and an addition reaction catalyst. The method for producing a sealant composition according to claim 1, wherein the additive is a mixture of 30 to 40% by weight of at least one additive.

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