KR101936785B1 - Filler composition for repairing pinhole of vehicle and repairing method using thereof - Google Patents

Abstract

The present invention relates to a pinhole filler composition for automobile repair and a repair method using the same, and its object is to provide a resin composition exhibiting a viscoelastic behavior so that the pores generated on the paint surface can be quickly and easily and efficiently dried, And to provide a repair method using the same.
The composition of the present invention is composed of 20 to 60% by weight of an organic solvent, 30 to 70% by weight of an extender pigment, 0.1 to 10% by weight of a wet dispersant, 0.5 to 15% by weight of titanium dioxide, and 0.01 to 5% Repair pinhole filler composition, and a rinse-type repair method using the same before using the primer-seal paper.

Description

Technical Field [0001] The present invention relates to a pinhole filler composition for repairing an automobile, and a repair method using the same.

The present invention relates to a pinhole filler composition for repairing automobiles and a repair method using the same. More particularly, the present invention relates to a method of repairing a pinhole on a surface of a putty after polishing a putty on a coated surface of a steel sheet to be repaired, The present invention relates to a technique for easily and quickly filling a filler composition which does not contain a filler composition.

In the automobile repair coating process, the uneven portion of the iron plate is coated with a putty based on an unsaturated polyester resin, and due to the viscosity characteristic of the paint applied by using a spatula, many pores are generated in the coated film after curing and drying.

These pores vary in size and distribution, and some may be buried in the subsequent process of primer-surfacing, but unfilled pores may continue to be applied after the next process, the base coat, and the last process, clear coat It remains as a coating defect in the end.

In order to prevent such coating film defects, in the general repair coating process, the unfilled pores are applied by using a separate one-pack type locker putty after primer-seal coat application. One-part type Lacquer putty uses nitro-cellulose resin or acrylic resin. Most of them are quick-drying type, but it requires about 10 minutes of drying time depending on the surrounding environment. The pore-plugging process proceeds after the primer-stapacer coating. Due to the nature of the primer-stapacetal coating, the relatively small size pores are not noticeable due to the matte or semi-opaque surface condition. Careful observation is needed.

In addition, in order to fill up the large pore of the putty in the primer-surfacer coating step, a larger amount of the paint should be applied than usual, and the high film thickness leads to the delay of the drying time, And effort.

Therefore, it is important to minimize the porosity of the putty. When it is applied thickly at one time, many pores are generated and when applied thinly several times, the porosity is minimized, but the working time is greatly increased.

As described above, since the putty used in the repair process of the existing automobile uses the resin composition as the subject of the composition, it has a structural problem that it takes a long drying time depending on the viscoelastic behavior due to the viscous property and the surrounding environment, Or the workability is not good, so a countermeasure is needed.

Korean Unexamined Patent Publication No. 10-1998-0025379 (July 15, 1998) Korean Unexamined Patent Application Publication No. 10-2014-0038836 (March 31, 2014). Korean Unexamined Patent Publication No. 10-2016-0020104 (February 23, 2016). Korean Patent Registration No. 10-0591802 (Jun. 13, 2006)

It is an object of the present invention to overcome the above-mentioned problems, and an object of the present invention is to provide a resin composition which can visually exhibit a viscoelastic behavior so that pores generated on a coating surface can be quickly, To provide a pinhole filler composition.

Another object of the present invention is to provide a method for repairing a primer-post-fascia using a repairing method for quickly drying a primer-post-fascia composition by quickly and simply and efficiently filling the pores with a rubbing method using a cloth or the like, .

In order to achieve the above object and to solve the conventional drawbacks of the present invention, the present invention provides a method for manufacturing a color filter, which comprises 20 to 60 wt% of organic solvent, 30 to 70 wt% of extender pigment, 0.1 to 10 wt% of wet dispersant, 15% by weight of carbon black, and 0.01 to 5% by weight of carbon black.

In a preferred embodiment, the organic solvent may be a hydrogenated heavy naphtha or a solvent aromatic naphtha.

In a preferred embodiment, the organic solvent may have a purifying point of 160 ° C or higher and a point of 210 ° C or lower.

In a preferred embodiment, the extender pigment may be selected from the group consisting of aluminum silicate, talc (non-spheroidal), barium sulfate and calcium carbonate.

In a preferred embodiment, the extender pigment may have an average particle size of 20 micrometers or less.

In a preferred embodiment, the wetting and dispersing agent is an inorganic or organic pigment dispersing agent having an active ingredient content of 30 to 100% by weight and an acid value of 0 to 300 mgKOH / g.

According to another aspect of the present invention, there is provided a method of repairing a pinhole in an automobile repairing method, which comprises filling the automobile repairing pinhole filler composition with a cloth or cloth, And providing a maintenance method that is used.

In a preferred embodiment, the repair method may be performed before primer-surfacer coating.

The pinhole filler composition for repairing automobile according to the present invention having the above-described characteristics can be applied before coating the primer coat with the pore, unlike the conventional one-pack type locker putty, It is not necessary to apply a large amount of paint, so that the material can be reduced, the drying time can be shortened, and the polishing time can be shortened.

Also, it is necessary to wipe the entire putty surface like a circle by using a clean cloth or cloth, not a method of checking all the pores by using a hula (spatula) like the existing car repair painting process, Less fatigue and shorter working time.

In addition, the conventional one-pack type locker putty requires a drying time of about 10 minutes in which the resin is essentially contained and the resin is dried, but the pinhole filler composition provided in the present invention does not use the resin composition, There is an advantage that no additional drying time is required.

Also, the pinhole filler composition provided in the present invention is filled with filler, which is a part where a plug is needed when the cloth is rubbed with a cloth, and the putty surface, which is an unnecessary part, is stuck to a cloth during rubbing to leave almost no filler composition on the putty surface There is no need to wipe it again with a different cloth after it has a unique feature.

The present invention is a useful invention having the advantages listed above and an invention that is highly expected to be used in industry.

FIG. 1 is a photograph of the adhesion test results of Example 3 and Comparative Example 7 according to one embodiment of the present invention,
2 is a photograph of water resistance test results of Example 3 and Comparative Example 7 according to one embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In addition, the present invention can be variously modified and may take various forms, and specific embodiments will be described in detail in the following description. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Also, in this application, the terms "comprises" or "having", etc. are intended to specify the presence of the stated features, components, steps, processes, compositions, or combinations thereof in which one or more other features or components , Step (s), process (s), composition (s), or combinations thereof.

Also, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

The pinhole filler composition for automobile repair according to one embodiment of the present invention is a filler filling the fine pores of the putty while rubbing on the surface of the putty using a cloth or a cloth, comprising 20 to 60% by weight of an organic solvent, 30 to 70% 0.1 to 10% by weight of a wet dispersant, 0.5 to 15% by weight of titanium dioxide, and 0.01 to 5% by weight of carbon black.

Specifically, the organic solvent may be a hydrogenated aromatic heavy naphtha, and has a characteristic that the ultrafiltration point is 160 ° C or higher and the species point is 210 ° C or lower. Solvents having a fresh stream point lower than 160 ° C have a volatilization rate which is too fast and the solvent is volatilized before the plugging work is completed, resulting in poor workability. Solvents having a type point higher than 210 ° C are not suitable because the drying time is delayed.

In addition to the hydrogenated aromatic heavy naphtha, it is possible to obtain a composition having a function similar to that of a solvent aromatic naphtha having a purifying point of 160 ° C or higher and a point of 210 ° C or lower. However, the odor of the aromatic solvent may cause the operator to feel rejection You need to be careful.

If the content of the organic solvent in the composition is less than 20% by weight, the viscosity of the composition is too high to allow the stirring to be difficult to form the coating. When the content exceeds 60% by weight, the pigment volume concentration is low and the function as a filler is difficult to exhibit.

The extender pigment may be selected from the group consisting of aluminum silicate, talc (barium carbonate), barium sulfate and calcium carbonate. The average particle size of the extender pigment should be 20 micrometers or less. If a size larger than this is used, it affects the appearance of the base coat and the clear coat to be coated thereon, so that additional polishing is required, which is disadvantageous in filling fine pores with a large particle size.

The wetting and dispersing agent is the most important factor for manifesting the unique plugging work described above. The wetting and dispersing agent for the organic pigment or the organic pigment suitable for the extender pigment to be used should be selected. When a suitable dispersing agent is used, the viscosity of the coating composition is lowered, so that a larger amount of extender pigment can be added, which is advantageous in view of raw material costs. When the dispersant is selected, the active ingredient content and the acid value should be considered. When the activated ingredient content is less than 30%, the solvent component constituting the remainder may affect the thixotropy of the coating composition and the acid value exceeds 300 mgKOH / g. May be a problem with the storage stability of the composition. Therefore, in the present invention, an activated carbon having an active ingredient content of 30 to 100% by weight and an acid value of 0 to 300 mgKOH / g is used.

The titanium dioxide and carbon black determine the color of the composition. When the titanium dioxide content is less than 0.5 wt%, the color is too dark, and when the content is more than 15 wt%, the raw material cost rises sharply.

Likewise, when the content of carbon black is less than 0.01% by weight, it is difficult to understand the extent to which the embroidery work has progressed because the color is too soft. When the content exceeds 5% by weight, the embroidery work area becomes black and it is inconvenient to wipe it again with another cloth.

Since the pinhole filler composition described above has no stickiness and does not adhere to the surface of the putty, there is no force when rubbing on the surface of the putty, and all residues remaining after filling only the required pore area are self- Conveniently, there is no need to apply a primer-postfacer too much in order to fill the pores by fusing the pores prior to primer-spreading. In addition, since there is almost no residue on the surface of the putty coating film, the physical properties such as adhesion and water resistance are not affected.

Hereinafter, the present invention will be described in more detail by way of examples, comparative examples and evaluation examples.

[Example 1]

35 wt% of heavier naphtha treated as an organic solvent, 60 wt% of an aluminum silicate having an average particle size of 0.5 micrometer as an extender pigment, 3 wt% of an inorganic wet dispersant, 1.9 wt% of titanium dioxide and 0.1 wt% of carbon black And the mixture was stirred at a speed of 800 rpm for 30 minutes in an agitator to obtain pinhole filler composition A for automobile.

[Comparative Example 1]

30 wt% of hydrogen-treated heavy naphtha as an organic solvent, 5 wt% of a nitro-cellulose resin as a one-pack fast drying type resin, 60 wt% of an aluminum silicate having an average particle size of 0.5 mu m as an extender pigment, 3 wt% 1.9% by weight of titanium dioxide and 0.1% by weight of carbon black were mixed and stirred in a stirrer at a speed of 800 rpm for 30 minutes to obtain pinhole filler composition B for automobile.

[Comparative Example 2]

38 wt% of hydrogenated heavy naphtha as an organic solvent, 60 wt% of aluminum silicate having an average particle size of 0.5 micrometer as an extender pigment, 1.9 wt% of titanium dioxide and 0.1 wt% of carbon black were mixed and stirred at a speed of 800 rpm To obtain an automotive pinhole filler composition C. (Change the inorganic wetting and dispersing agent to an organic solvent)

[Comparative Example 3]

62% by weight of heavier naphtha treated as an organic solvent, 28% by weight of aluminum silicate having an average particle size of 0.5 micrometer as an extender pigment, 5% by weight of an inorganic wet dispersant, 4.5% by weight of titanium dioxide and 0.5% And stirred at a speed of 800 rpm in a stirrer for 30 minutes to obtain pinhole filler composition D for automobile.

[Evaluation Example 1]

To evaluate the coating compositions of Example 1 and Comparative Examples 1 to 3 above, specimens were prepared as follows.

A 50 cm X 40 cm X 0.8T CR steel plate was sandblasted with a # 180 abrasive paper and then degreased and cleaned with a Haikyuka-Cleaner DR-180 (manufactured by Noru Paint Co., Ltd.), and a hardener was added to a Haikyu magic putty Were mixed in a weight ratio so as to have a coating film thickness of about 400 to 500 micrometers by Hera. At this time, it was applied thickly at a time so that a lot of pores could be generated. In order to shorten the drying time of the putty, it was forcibly dried in an oven at 60 ° C for 30 minutes, and uniformly sanded with # 180 abrasive paper. Thereafter, the coating compositions of Example 1 and Comparative Examples 1 to 3 were rubbed roundly using a cloth to perform pore plugging.

After the plugging operation, Haikypra-Surf PS-330 (manufactured by Noru Paint Co., Ltd.) was coated with D.F.T = 40 to 60 micrometers, forced drying in a 60 ° C oven for 20 minutes, and uniformly sanded with # 600 abrasive paper. Thereafter, surface degreasing was carried out using Haikyuka-Cleaner DR-180 (manufactured by Noru Paint Co., Ltd.), and DFT = 15 to 20 micrometers was applied to a hiccup base coat 3D-1 After left standing, Haikyu Clearcoat Master Pro (manufactured by Noru Paint Co., Ltd.) was coated so as to have a DFT of 40 to 60 micrometers, forced drying in an oven at 60 ° C for 30 minutes, and left at room temperature for 7 days to prepare test specimens.

Experimental procedure and performance test of specimens were carried out as follows. The results are shown in Table 1.

1) Paint Viscosity: The viscosity of each composition was measured at 25 캜 using a Poisson viscometer VT-04.

2) Plugging: The number of unfilled pores was compared with the distribution of the unfilled primer-surfacer after applying plugging to the putty surface using the composition.

3) Plugging workability: It was compared and evaluated how easy and simple it was when plugging the putty surface with the composition. When filling, you need to rub it with a little force in order to fill the pores completely. If there is a slip, you can smoothly rub it with a slip, so it is easy and hard to work. . In addition, when there is a lot of residue on the putty surface during the plugging operation, there is inconvenience that another clean cloth must be wiped once again.

4) Subject: Appearance: After applying pinhole filler, normal subsequent coating was carried out and it was evaluated whether there was any cilting, gloss disappearance, putty marks, etc. on the area where pinhole filler was applied.

Composition A Composition B Composition C Composition D Remarks Paint viscosity - 250 - - Plaster cast ◎ ◎ ◎ △ Fit workability ◎ X ○ ◎ Targeted appearance ◎ ◎ ◎ ◎

(?: Very good,?: Good,?: Fair, X: not acceptable)

From the results of the experiment shown in Table 1, it can be seen that the composition A can not be used for measuring the viscosity due to the nature of the resin-free pinhole pillar composition, and therefore can be easily used without stirring when the composition is stirred before use or when the composition is taken out to a cloth . Composition B has a certain viscosity due to the inherent viscoelastic behavior of the resin, which makes it felt more discomfort than the compositions A, C, and D when stirring or releasing the composition to a cloth.

It can be understood that the composition D of the composition D is too thin in paint properties and the solid content of the coating composition is low, so that many unfilled pores do not play a role as an automobile repair pinhole filler.

Also, the resin composition B is relatively difficult to apply due to the sticky viscoelastic behavior, and the composition C is substantially similar in workability to the composition A, but the slip property is somewhat lacking and the residue is slightly generated on the putty surface, It was somewhat inferior.

[Example 2]

30 wt% of hydrogenated heavy naphtha as an organic solvent, 55 wt% of aluminum silicate having an average particle size of 0.5 micrometer as an extender pigment, 10 wt% of barium sulfate having an average particle size of 1 micrometer as an extender pigment, inorganic wetting and dispersing agent 3 1.9% by weight of titanium dioxide, 0.1% by weight of carbon black, and the mixture was stirred at a speed of 800 rpm for 30 minutes in a stirrer to obtain pinhole filler composition E for automobile.

[Comparative Example 4]

30% by weight of heavier naphtha treated as an organic solvent, 65% by weight of an aluminum silicate having an average particle size of 25 micrometers as an extender pigment, 3% by weight of an inorganic wet dispersant, 1.9% by weight of titanium dioxide and 0.1% And the mixture was stirred at a speed of 800 rpm for 30 minutes in an agitator to obtain pinhole filler composition F for automobile.

[Comparative Example 5]

 30 wt% of solvent aromatic naphtha as an organic solvent, 65 wt% of an aluminum silicate having an average particle size of 25 micrometers as an extender pigment, 3 wt% of an inorganic wet dispersant, 1.9 wt% of titanium dioxide and 0.1 wt% of carbon black were mixed and stirred in an agitator And the mixture was stirred at a speed of 800 rpm for 30 minutes to obtain pinhole filler composition G for automobile.

[Comparative Example 6]

 30% by weight of heavier naphtha B hydrogenated as an organic solvent (product of the same company as used in Example 2 or having a purifying point of 97 占 폚 or higher and a type point of 103 占 폚 or less) 65% by weight aluminum silicate having a size of 0.5 micrometer, 3% by weight of an inorganic wet dispersant, 1.9% by weight of titanium dioxide and 0.1% by weight of carbon black were mixed and stirred in a stirrer at a speed of 800 rpm for 30 minutes, .

The compositions obtained through the above Example 2 and Comparative Examples 4 to 6 were compared and evaluated in the same manner as in Evaluation Example 1, and the results are shown in Table 2.

Composition E Composition F Composition G Composition H Remarks Paint viscosity - - - - Plaster cast ◎ ○ ◎ ◎ Fit workability ◎ ◎ ○ △ Targeted appearance ◎ X ◎ ◎

(?: Very good,?: Good,?: Fair, X: not acceptable)

Composition F had many unfilled pores after priming-surfacer coating after plugging. It can be interpreted that because the extender pigment having an average particle size exceeding 20 micrometers is used, the extruded extender pigments can not fill up the minute pores.

Also, the appearance of the composition of the composition F was significantly different from that of the other three species. For this reason, it is preferable to use an extender pigment of the pinhole filler having an average particle size of 20 micrometers or less.

The composition G exhibited a level of playability and plugging workability substantially equal to those in Example 2. However, since the aromatic solvent has a thinner smell inherent to the aromatic solvent, the workability of the composition G may be reduced.

The composition H had a too high solvent volatilization rate and limited working time, and a large amount of the composition remained on the putty side. For this reason, the organic solvent used for the pinhole filler is preferably one having a high boiling point and a low volatilization rate.

From the above-mentioned comparative test results, it can be seen that Examples 1 and 2 are suitable as the pinhole filler composition for automobile repair provided in the present invention.

Hereinafter, the present invention is compared with a conventional one-piece type locker putty for repairing an automobile pinhole filler to compare its advantages and disadvantages.

[Example 3]

33% by weight of heavier naphtha hydrotreated as an organic solvent, 52% by weight of aluminum silicate having an average particle size of 0.5 micrometer as an extender pigment, 10% by weight of an aluminum silicate having an average particle size of 1 micrometer as an extender pigment, 1.9% by weight of titanium dioxide, 0.1% by weight of carbon black, and the mixture was stirred at a speed of 800 rpm for 30 minutes in an agitator to obtain pinhole filler composition I for automobile.

[Comparative Example 7]

As a conventional one-pack type lacquer putty, a commercially available hi-cigarette A-1000 (manufactured by Noru Paint Co., Ltd.) was used.

Comparative tests on the workability and physical properties of the one-pack type of laccar putty obtained in Example 3 and Comparative Example 7 were conducted by the following method.

[Evaluation Example 2]

After sanding with a # 180 abrasive paper, a CR steel plate of 50 cm X 40 cm X 0.8 T (using water repellency and adhesion of 15 cm X 7 cm X 0.8 T) was degreased and washed with a Haikyuka-Cleaner DR-180 The curing agent was mixed at a weight ratio of 100: 2 to Putty (manufactured by Noru Paint Co., Ltd.), and applied with a film thickness of about 400 to 500 micrometers by Hera. At this time, it was applied thickly at a time so that many pores could be generated. In order to shorten the drying time of the putty, it was forcibly dried in an oven at 60 ° C for 30 minutes, and uniformly sanded with # 180 abrasive paper. Thereafter, the coating composition of Example 3 was rubbed round and rubbed into a test piece 1 using a cloth.

After that, each of the samples was dried in a 60 ° C oven for 20 minutes to give a DFT of 40-60 micrometers, and then a 1-pack type Lacquered Putty of Comparative Example 7 And left for 10 minutes. Thereafter, they were sanded using # 600 abrasive paper under the same conditions.

Thereafter, surface degreasing was carried out using Haikyuka-Cleaner DR-180 (manufactured by Noru Paint Co., Ltd.), and DFT = 15 to 20 micrometers was applied to a hiccup base coat 3D-1 After left standing, Haikyu Clearcoat Master Pro (manufactured by Noru Paint Co., Ltd.) was coated so as to have a DFT of 40 to 60 micrometers, forced drying in an oven at 60 ° C for 30 minutes, and left at room temperature for 7 days to prepare test specimens.

Experimental procedure and performance test of specimens were carried out as follows. The results are shown in Table 3.

1) Plugging: The number and distribution of unfilled pores were compared after the clearcoat was dried.

2) Plugging workability: A comparative evaluation was made as to how easy and easy the work is to perform plugging of the putty using the composition of Example 3 and Comparative Example 7. [

3) Object appearance: After the clear coat was dried, the gloss and linearity of the clear coat were compared and evaluated.

4) Adhesiveness: After the clearcoat was dried, 100 scoops of 2 mm checkerboard were scratched with a stationary knife and scratched with a Scotch tape to evaluate the adhesion of the coating.

5) Water resistance: The test specimen dried with clear coat was allowed to stand in distilled water at 40 ° C for 7 days, and appearance defect of the coating film was visually observed.

Example 3 Comparative Example 7 Remarks Plaster cast ◎ ◎ Fit workability ◎ △ Targeted appearance ◎ ◎ Attachment 100/100 0/100 Water resistance Good Blister occurrence

(?: Very good,?: Good,?: Fair, X: not acceptable)

From the results of Table 3, there is no difference between the pore-sealing ability of Example 3 and Comparative Example 7, but there is a difference between the process and the method. In Example 3, a small amount of cloth was rubbed on the cloth, and a cloth was rubbed on the cloth surface. As a result, it took about 20 to 30 seconds for the operation to be quick and simple. In Comparative Example 7, It took about 3 minutes for the work and about 10 minutes for the work after the work.

In addition, the coating of the primer-surfacer can be normally performed in a state in which the pores are fully filled in the coating of the primer-surfacer before the coating of the primer-surfacer in Example 3. In Comparative Example 7, So that a lot of pores are observed at the time of primer-spreader coating, which causes a lot of unnecessary painting.

In Example 3, there was no problem in adhesion and water resistance, whereas in Comparative Example 7, adhesion was greatly reduced (see FIG. 1), and in the case of water resistance, blisters (blisters due to foaming) occurred (See Fig. 2). In the case of Example 3, the composition was embedded only in the required pore portion and the composition was hardly present on the remaining putty surface. On the other hand, the one-pack type lactic putty of Comparative Example 7 was coated on the dried primer- - Due to the nature of the simultaneous grinding of the fascia and the lacquer putty, the remaining lacquer putty surface must remain on the primer-surfacer coat side and there is no chemical linkage with the subsequent coat due to the lacquered putty's one-part type resin properties It is vulnerable to adhesion and water resistance. In order to prevent this, the surface coated with Lacquer putty should be thoroughly sanded and removed so that there is almost no remaining surface except for pores. When the Lacquer putty is completely removed due to the bendy car panel, Chedi is removed as well, and the putty surface is exposed. In this case, it is impossible to completely remove the lacquered putty because the primer-surfacer coating must be re-applied.

From the above results, it can be seen that the pinhole filler composition for repairing automobiles provided in the present invention is characterized by being able to quickly and easily mix the pores of the putty efficiently and in comparison with the conventional one-pack type rockcarty putty, .

Also, the automobile repairing pinhole filler composition provided in the present invention is a coating composition for filling pores of an automobile repairing putty, but it can also be applied to coating fine defects, scratches and holes in general plastic materials and other composite materials.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

Claims (8)

Wherein the composition comprises 20 to 60% by weight of an organic solvent, 30 to 70% by weight of an extender pigment, 0.1 to 10% by weight of a wet dispersant, 0.5 to 15% by weight of titanium dioxide, and 0.01 to 5%
Wherein the organic solvent is selected from the group consisting of hydrogenated heavy naphtha or solvent aromatic naphtha and having a ultrafiltration point of 160 ° C or higher and a type point of 210 ° C or lower.
delete delete The method according to claim 1,
Wherein the extender pigment is selected from the group consisting of aluminum silicate, talc (non-spherical), barium sulfate, and calcium carbonate, or a mixture of two or more thereof.
The method of claim 4,
Wherein the extender pigment has an average particle size of 20 micrometers or less.
The method according to claim 1,
Wherein the wetting and dispersing agent is an inorganic or organic pigment dispersing agent, wherein the active ingredient content is 30 to 100% by weight and the acid value is 0 to 300 mgKOH / g.
In repairing a pinhole for repairing an automobile,
Claims [1] A method for repairing an automobile repairing pinhole filler composition according to any one of claims 1, 4, 5, and 6 by a rubbing method after a primer- A repair method using a repair pinhole filler composition. delete

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