JPH10195339A - Vibration-damping coating material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a vibration-damping coating material which can exhibit vibration energy absorbing performances fur surpassing those of a conventional vibration-damping sheet, being good in the region of service temperature and being excellent in a wider temperature region by adding an active component which can increase the dipole moment of a film component to a film component. SOLUTION: With respect to the dipole moment vs. vibration energy absorbing performance relationship, the state of arrangement of dipoles 12 inside the restriction layer 11 formed from a film-forming component before vibration energy is transferred is stable as shown in Fig. When vibration energy is transferred, the dipoles 12 present inside the restriction layer 11 displace and become unstable, and the respective dipoles tend to restore the stable state shown in Fig. In view of this fact, a polyvinyl chloride, a chlorinated polyethylene or the like which is a polar molecule inherently having large dipole moment within the molecule is used as the film-forming component forming the restriction layer, and a high polymer having a glass transition temperature in the region of service temperature is used as the film-forming component.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an automobile, an interior material,
The present invention relates to a vibration damping paint that can be applied to a place where vibration occurs, such as a building material and a home appliance, and can form a vibration damping layer having excellent vibration energy absorption performance.

[0002]

2. Description of the Related Art Conventionally, in places where vibration is generated in automobiles, interior materials, building materials, home electric appliances and the like, vibration-damping members formed as sheets are used as members for absorbing the vibration energy. Sheets were commonly used.

However, in the case of a vibration damping sheet, it must first be cut into a size and a shape corresponding to the application location. In addition, since the vibration damping sheet is attached to an application location using an adhesive or a pressure-sensitive adhesive, most of the attaching work is performed manually, and there is a problem that work efficiency is poor. Especially in the application places such as curved surfaces and narrow gaps, the damping sheet cannot be stuck, or even if it can be stuck, it easily peels off, or it takes much time and labor to stick There was a problem that required.

In view of such disadvantages, in recent years, so-called vibration damping paints have been proposed in which mica scales and the like are added to a coating component mainly composed of a viscoelastic polymer such as a rubber, a plastic or an asphalt. Has reached. The damping paint can easily form a damping layer simply by spraying the damping paint on an application portion, and does not require cutting and pasting operations as in the case of a damping sheet, and furthermore, for example, a curved surface portion or a narrow portion. There is an advantage that the vibration damping layer can be easily formed even in the gap portion. Further, in the case of the damping paint, since the damping paint is merely sprayed on the application portion, the work can be performed using a robot or the like, and there is an advantage that the working efficiency can be greatly improved.

However, in this damping paint,
While having the above-mentioned advantages, the thickness of the damping layer formed of the damping paint is limited to 2 mm, and cannot be applied to a part requiring high performance.

[0006] In order to solve such a technical problem, the present inventors have conducted intensive studies on a damping paint capable of forming a damping layer having excellent vibration energy absorbing performance. The amount of dipole moment has a deep relationship with the absorption performance of the vibration energy of the damping layer formed by the damping paint, and the specific component is added to increase the amount of dipole moment in the damping layer. It has been found that this can dramatically improve the vibration energy absorption performance of the vibration damping layer.

The present invention has been made based on the above findings, and provides a vibration-damping paint capable of forming a vibration-damping layer having excellent vibration energy absorption performance far exceeding that of a conventional vibration-damping sheet. That is the main purpose.

Another object of the present invention is to provide a vibration damping paint capable of forming a vibration damping layer exhibiting good vibration energy absorption performance in a use temperature range.

Still another object of the present invention is to provide a vibration-damping paint capable of forming a vibration-damping layer exhibiting excellent vibration energy absorbing performance in a wide temperature range.

[0010]

According to a first aspect of the present invention, there is provided a coating composition comprising an active ingredient for increasing the amount of dipole moment in the coating composition. The gist is a vibration damping paint characterized by the following.

The invention according to claim 2 is that the coating film component comprises a polar polymer selected from polyvinyl chloride, chlorinated polyethylene, acrylic rubber, acrylonitrile-butadiene rubber, styrene-butadiene rubber, and chloroprene rubber. The gist of the characteristic damping paint is as follows.

The gist of the invention according to claim 3 is a vibration-damping paint characterized in that the coating film component is composed of a polymer having a glass transition point in the temperature range of use.

[0013] The invention according to claim 4 has a gist of a vibration damping paint characterized in that the active ingredient is contained in a proportion of 10 to 100 parts by weight with respect to 100 parts by weight of the coating film component.

According to a fifth aspect of the invention, there is provided a vibration damping paint characterized in that the active ingredient is at least one compound selected from compounds containing a mercaptobenzothiazyl group. .

The invention according to claim 6 has a gist of a vibration damping paint characterized in that the compound containing a mercaptobenzothiazyl group is N, N-dicyclohexylbenzothiazyl-2-sulfenamide. .

The gist of the invention according to claim 7 is that the compound containing a mercaptobenzothiazyl group is 2-mercaptobenzothiazole.

The gist of the invention described in claim 8 is a vibration damping paint characterized in that the compound containing a mercaptobenzothiazyl group is dibenzothiazyl sulfide.

According to a ninth aspect of the invention, there is provided a vibration damping paint characterized in that the active ingredient is at least one compound selected from compounds having a benzotriazole group.

The invention according to claim 10 is that the compound having a benzotriazole group is 2- {2'-hydroxy-
The gist of the present invention is a vibration damping paint characterized by being 3 '-(3 ", 4", 5 ", 6" tetrahydrophthalimidemethyl) -5'-methylphenyl} -benzotriazole.

The invention according to claim 11 is a compound according to claim 11, wherein the compound having a benzotriazole group is 2- {2'-hydroxy-
The gist of the present invention is a vibration damping paint characterized by being 5'-methylphenyl} -benzotriazole.

According to a twelfth aspect of the present invention, the compound having a benzotriazole group is 2- {2'-hydroxy-
The gist of the present invention is a vibration damping paint characterized by 3'-t-butyl-5'-methylphenyl} -5-chlorobenzotriazole.

According to a thirteenth aspect of the present invention, the compound having a benzotriazole group is 2- {2'-hydroxy-
The gist of the present invention is a vibration damping paint characterized by 3 ', 5'-di-t-butylphenyl} -5-chlorobenzotriazole.

The gist of the invention according to claim 14 is that the active ingredient is at least one compound selected from compounds having a diphenyl acrylate group.

According to a fifteenth aspect of the present invention, the compound having a diphenylacrylate group is ethyl-2-cyano-3,
The gist of the present invention is a vibration damping paint characterized by being 3-di-phenyl acrylate.

The invention according to claim 16 is characterized in that at least two or more active ingredients having different glass transition points are blended in the coating film component, and the temperature range in which the vibration damping property is exhibited is expanded. The gist of the damping paint is as follows.

According to a seventeenth aspect of the present invention, at a frequency of 110H
The gist of the present invention is a vibration damping paint characterized in that the dielectric loss factor at z is 50 or more.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the vibration damping paint of the present invention will be described in detail. The vibration damping paint of the present invention contains,
An active ingredient that increases the amount of dipole moment in the coating film component is contained.

First, the relationship between the dipole moment amount and the vibration energy absorption performance will be described. FIG. 1 shows the arrangement of the dipoles 12 in the damping layer 11 formed by the coating film components before the vibration energy is transmitted. It can be said that the arrangement state of the dipole 12 is in a stable state. However, the transmission of the vibration energy causes a displacement in the dipoles 12 existing inside the damping layer 11, and as shown in FIG. 2, each dipole 12 inside the damping layer 11 is in an unstable state. And each dipole 12 attempts to return to a stable state as shown in FIG.

At this time, energy is consumed. Through the displacement of the dipole inside the damping layer 11 and the energy consumption due to the restoring action of the dipole,
It is considered that vibration energy is absorbed.

From the vibration damping mechanism, the larger the amount of the dipole moment in the damping layer 11 formed by the coating components as shown in FIGS. 1 and 2, the larger the damping layer. It is considered that the damping property of 11 also increases. From this, it is very useful to form a damping layer having a large amount of dipole moment inside the molecule as a coating component forming the damping layer, in forming a damping layer having higher vibration energy absorption performance. That is.

A polar polymer having a large dipole moment in the molecule is exemplified by a polar polymer. As the polar polymer, specifically, polyvinyl chloride, chlorinated polyethylene, acrylic rubber (ACR),
Examples include acrylonitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), and chloroprene rubber (CR).

The vibration damping paint of the present invention is applied to a wide range of fields such as automobiles, interior materials, building materials, and home electric appliances.
It is not possible to form a vibration damping layer exhibiting the best damping of vibration energy at the temperature at the time of use (hereinafter referred to as a use temperature range; specifically, −20 ° C. to 40 ° C.) at the place where the vibration occurs. It can be said that this is one of the important factors in applying the damping paint.

In the vibration damping paint of the present invention, it is proposed to use a polymer having a glass transition point in the operating temperature range as a coating film component in order to maximize the absorption performance of vibration energy in the operating temperature range. doing. As the polymer having a glass transition point in the temperature range of use, specifically, polyvinyl chloride, polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polymethyl methacrylate, polyvinylidene fluoride, polyisoprene, polystyrene, styrene- Butadiene-acrylonitrile copolymer, styrene-
Add a plasticizer such as di-2-ethylhexyl phthalate (DOP), dibutyl phthalate (DBP), diisononyl phthalate (DINP) to a polymer such as an acrylonitrile copolymer, and use at -20 ° C to 40 ° C. Acrylic rubber (AC) in which the glass transition point (Tg) is shifted to the temperature range or the polymer itself has the glass transition point (Tg) in the operating temperature range of -20 ° C to 40 ° C.
R), acrylonitrile-butadiene rubber (NBR),
Styrene-butadiene rubber (SBR), butadiene rubber (BR), natural rubber (NR), isoprene rubber (I
R), chloroprene rubber (CR), and polymers such as chlorinated polyethylene.

As the coating film component, a polyurethane-based or asphalt-based component used as a coating film component in a conventional damping paint may be used in addition to the above-mentioned components.

In selecting the components constituting the coating film components, the handling properties are determined according to the amount of the dipole moment in the molecule and the operating temperature range, as well as the application and mode of use of the damping paint. It is also desirable to take into account the moldability, availability, temperature performance (heat resistance and cold resistance), weather resistance, and price.

The active component is a component that dramatically increases the amount of dipole moment in the coating film component. The active component itself has a large dipole moment amount, or the active component itself has a dipole moment amount of: Although it is small, it refers to a component in which the amount of dipole moment in the coating film component is dramatically increased by including the active component.

For example, the amount of dipole moment generated in the damping layer 11 formed by the coating film component under a predetermined temperature condition and the magnitude of vibration energy is determined by the fact that the coating film component contains the active component. As shown in FIG. 3, the amount is increased to three times or ten times under the same conditions. Along with this, it is considered that the energy consumption due to the restoring action of the dipole when the vibration energy is transmitted will also increase drastically, resulting in an absorption performance far exceeding the prediction.

Examples of the active ingredient which can bring about such an effect include N, N-dicyclohexylbenzothiazyl-
2-sulfenamide (DCHBSA), 2-mercaptobenzothiazole (MBT), dibenzothiazyl sulfide (MBTS), N-cyclohexylbenzothiazyl-2-sulfenamide (CBS), N-tert-
Butylbenzothiazyl-2-sulfenamide (BB
S), a compound containing a mercaptobenzothiazyl group such as N-oxydiethylenebenzothiazyl-2-sulfenamide (OBS), N, N-diisopropylbenzothiazyl-2-sulfenamide (DPBS),

A benzotriazole having an azole group bonded to a benzene ring is used as a mother nucleus, and 2- (2'-hydroxy-3 '-(3 ", 4",
5 ", 6" tetrahydrophthalimidemethyl) -5'-
Methylphenyl} -benzotriazole (2HPMM
B), 2- {2'-hydroxy-5'-methylphenyl} -benzotriazole (2HMPB), 2- {2 '
-Hydroxy-3'-t-butyl-5'-methylphenyl} -5-chlorobenzotriazole (2HBMPC
B), 2- {2'-hydroxy-3 ', 5'-di-t
Compounds having a benzotriazole group, such as -butylphenyl} -5-chlorobenzotriazole (2HDBPCB);

Alternatively, ethyl-2-cyano-3,3-
One or more compounds selected from compounds containing a diphenyl acrylate group such as di-phenyl acrylate can be mentioned.

The content of the above-mentioned active ingredient is preferably from 10 to 100 parts by weight based on 100 parts by weight of the coating film component. For example, when the content of the active ingredient is less than 10 parts by weight, a sufficient effect of increasing the amount of the dipole moment cannot be obtained, and when the content of the active ingredient exceeds 100 parts by weight, the compatibility is insufficient. Or insufficient film strength may be obtained.

In determining the active component contained in the coating film component, the active component and the coating film component are easily compatible with each other.
That is, considering the SP value, it is preferable to select one having a similar value.

The amount of the dipole moment varies depending on the type of the above-mentioned coating film component and active component. Even when the same component is used, the amount of the dipole moment changes depending on the temperature at which the vibration energy is transmitted. In addition, the amount of the dipole moment changes depending on the magnitude of the transmitted vibration energy. For this reason, considering the temperature and vibration energy when applying as a damping paint, it is necessary to select and use the coating film component and the active component so that the largest dipole moment is obtained. desirable.

The above-mentioned active ingredients are not limited to one kind, and two or more kinds can be mixed. In this case, at least two or more active components having different glass transition points can be included in the coating film component to extend the temperature range in which the vibration damping property is exhibited. For example, when polyvinyl chloride is used as a coating film component, a combination of DCHP and DCHBSA,
Similarly, when polyvinyl chloride is used as a coating film component, DCH
Combinations of P, DCHBSA and ECDPA can be mentioned.

[0045] In addition to the active ingredient, the above-mentioned coating composition contains mica scales for the purpose of further improving absorption performance.
Fillers such as glass pieces, glass fiber, carbon fiber, calcium carbonate, barite, precipitated barium sulfate, etc. are filled. The filling amount of the filler is 10 to 9
0% by weight is preferred. For example, when the filling amount of the filler is less than 10% by weight, the absorption performance is not sufficiently improved even if the filling is performed with the filler.
Even if the amount exceeds 0% by weight, it may cause problems such as inability to actually fill or decrease the mechanical strength of the damping layer formed by the coating film components.

The vibration damping paint of the present invention is prepared by dispersing the above-mentioned coating film component, active ingredient and filler in water or alcohol and using it in the form of an emulsion. Other components such as a humectant, a thickener, an antifoaming agent, a viscosity modifier and a coloring agent are also added as needed.

The vibration damping paint is obtained by blending the above-mentioned coating film component and active ingredient, a dispersing medium and dispersant such as water and alcohol, and, if necessary, a filler, a dispersant and a thickener. , A dissolver, a Banbury mixer, a planetary mixer, a Glen mill, an open kneader, and a vacuum kneader.

When applying the vibration damping paint, a conventionally known application means such as an air spray gun, an airless spray gun, or a brush can be used.

As described above, in the vibration damping paint containing the active ingredient in the coating film component, the amount of the dipole moment in the coating film component is drastically increased. Although excellent vibration energy absorption performance is exhibited, the amount of dipole moment in the damping paint is determined by the dielectric constant (ε ′) between AB shown in FIG.
Expressed as the difference between That is, the larger the difference in the dielectric constant (ε ′) between AB shown in FIG. 4 is, the larger the amount of the dipole moment is.

FIG. 4 is a graph showing the relationship between the permittivity (ε ′) and the permittivity (ε ″). The permittivity (ε ′) and the permittivity (ε ″) shown in this graph are shown. )
Dielectric loss factor (ε ″) = dielectric constant (ε ′) × dielectric tangent (tan)
δ).

The present inventor has found through research on damping paints that the higher the dielectric loss factor (ε ″) is, the higher the loss factor (η) and loss tangent (tan δ) are. That is, there is a correlation between the dielectric loss factor (ε ″) representing the electronic physical properties of the polymer and the loss coefficient (η) and the loss tangent (tan δ) representing the mechanical properties.

When the dielectric loss factor (ε ″) of the above-mentioned damping paint was examined based on this finding, it was found that the damping layer formed by applying the damping paint of the present invention had a frequency of 110
When the dielectric loss factor at 50 Hz is 50 or more, both the loss coefficient (η) and the loss tangent (tan δ) are high,
It was found that it had excellent vibration energy absorption performance.

[0053]

EXAMPLE A damping paint using a coating component containing an active ingredient shown in Table 1 below was applied to a substrate, and a dielectric loss factor (ε ″) and a loss were measured for the damping layer formed on the substrate surface. The coefficient (η) and the loss tangent (tan δ) were measured and the results are shown in Table 1. The measurement of the dielectric loss factor (ε ″), the loss coefficient (η), and the elastic tangent (tan δ) (Η) and elastic tangent (tan δ) were measured using a dynamic viscoelasticity measurement tester (Reo Vibron DDV-25FP, manufactured by Orientec Co., Ltd.), and dielectric loss factor (ε ″) was measured using impedance /
A gain / phase analyzer 4194A and a measuring device manufactured by Yokogawa Hewlett-Packard Co., Ltd. were used.

[0054]

In Table 1, EC818 is an acrylic coating film component manufactured by Dainippon Ink and Chemicals, Inc. (with a nonvolatile component of 50%). VN-168 is also a coating component of a vinyl acetate / acrylic copolymer (with a nonvolatile component of 44.0 to 46.0%), also manufactured by Dainippon Ink and Chemicals, Inc.
200HK is a mica scale made by Kuraray Co., Ltd.

Next, using the above-mentioned EC818 and VN-168, a damping paint was prepared by mixing the active ingredient and mica scale shown in Table 2, and the damping paint was applied to a substrate.
The loss coefficient (η) of the vibration damping layer formed on the substrate surface was measured. The results are shown in FIGS. The measurement of the loss coefficient (η) is performed by a dynamic viscoelasticity measurement test device (Reo Vibron DDV-25FP, manufactured by Orientec Co., Ltd.)
This was performed using

[0057]

Next, using two kinds of coating components (normal temperature type and high temperature type) having different TGs, damping paints were prepared as follows. This damping paint is applied to a substrate, and a dielectric loss tangent (tan) is applied to the damping layer formed on the surface of the substrate.
δ), the dielectric loss factor (ε ″) and the dielectric constant (ε ′) were measured and shown in Table 3. The loss coefficient (η) was also measured for these samples, and the results are shown in FIG. The loss coefficient (η) was measured according to JIS G 0602-199.
The measurement was performed according to the central vibration method specified in 3.

For comparison, a commercially available vibration damping paint, a commercially available product 1 (trade name, water type C), a commercial product 2 (trade name, solvent type N), and a commercial product 3 (trade name, water type N) Co., Ltd.) and household paints were also applied to a substrate, and the dielectric loss tangent (tan δ), dielectric loss factor (ε ″) and dielectric constant (ε ′) of the formed vibration damping layer were measured. Table 3
In addition, the loss coefficient (η) was measured for each of them, and the results are shown in FIG.

[0060]

Acrylic-styrene emulsion of normal temperature type (BC-280, manufactured by Dainippon Ink and Chemicals, Inc.) was used in an amount of 34.1% by weight.
11.1% by weight of CHBSA (Suncellar DZ, manufactured by Sanshin Chemical Industry Co., Ltd.), and a damping filler (Mica 200
HK, manufactured by Kuraray Co., Ltd.), 44.0% by weight, dispersant (sodium tripolyphosphate, manufactured by Dainippon Ink and Chemicals, Inc.) by 0.3% by weight, defoamer (Fomaster PC,
0.1% by weight of San Nopco, 0.7% by weight of a film-forming aid (ethylene glycol, manufactured by Mitsubishi Chemical Corporation), and 0% of a thickener (Aron A-30, manufactured by Toagosei Co., Ltd.) 0.4% by weight, 1.8% by weight of a colorant (Disper Black, manufactured by Dainippon Ink and Chemicals, Inc.), and 7.5% by weight of water as a viscosity modifier. It was a vibration paint.

A high-temperature type acrylic-styrene emulsion (BC-863, manufactured by Dainippon Ink and Chemicals, Inc.) was used in an amount of 34.1% by weight, DCHBSA (Suncellar D).
Z, 11.1% by weight of Sanshin Chemical Industry Co., Ltd., 44.0% by weight of damping filler (Mica 200HK, Kuraray Co., Ltd.), dispersant (sodium tripolyphosphate, Dainippon Ink and Chemicals, Inc.) 0.3% by weight of an antifoaming agent (Fourmaster PC, manufactured by San Nopco Co., Ltd.).
1% by weight, 0.7% by weight of a film-forming auxiliary (ethylene glycol, manufactured by Mitsubishi Chemical Corporation), a thickener (Aron A-30,
0.4% by weight of Toagosei Co., Ltd., 1.8% by weight of a colorant (Disper Black, manufactured by Dainippon Ink and Chemicals, Inc.), and 7.5% by weight of water as a viscosity modifier. In addition, these were mixed to form a damping paint.

FIG. 9 shows that the damping paint (normal temperature type) according to the example shows a high peak at a loss coefficient of about 0.12 around 20 ° C., and the damping paint (high temperature type) ) Showed a very high peak at around 40 ° C. with a loss coefficient of more than about 0.14.

On the other hand, among the commercial products, those of Company C
It shows the highest peak value (loss factor about 0.07), which is around 0 ° C., and at room temperature around 20 ° C.
It is below 04. The performance of other commercially available products was lower than those of the examples, and there was a marked difference from those of the examples.

[0065]

According to the vibration damping paint of the present invention, the active ingredient is contained in the coating film component, and the amount of dipole moment in the coating film component is dramatically increased. It is possible to form a vibration damping layer having excellent vibration energy absorption performance far exceeding the vibration sheet.

Further, the vibration damping paint can form a vibration damping layer exhibiting good vibration energy absorption performance in a use temperature range.

Further, the damping paint can form a damping layer exhibiting excellent vibration energy absorbing performance in a wide temperature range.

When the dielectric loss factor at a frequency of 110 Hz of the vibration damping layer formed by applying the vibration damping paint is 50 or more, the vibration damping layer may be used for vibration of automobiles, interior materials, building materials, home electric appliances and the like. It is applied to the places where cracks occur and exhibits excellent vibration energy absorption performance.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a dipole in a coating film component.

FIG. 2 is a schematic diagram showing a state of a dipole in a coating film component when vibration energy is transmitted.

FIG. 3 is a schematic diagram showing a state of a dipole in a coating film component when an active ingredient is blended.

FIG. 4 is a graph showing a relationship between a dielectric constant (ε ′) and a dielectric loss factor (ε ″) in a coating film component.

FIG. 5 is a graph showing a loss coefficient (η) of each test piece of each of Samples 1 to 6 at each temperature.

FIG. 6 is a graph showing the loss coefficient (η) of each test piece of each of Samples 7 to 10 at each temperature.

FIG. 7 is a graph showing the loss coefficient (η) of each test piece of each of samples 11 to 13 at each temperature.

FIG. 8 is a graph showing a loss coefficient (η) of each test piece of each of Samples 14 to 17 at each temperature.

FIG. 9 is a graph showing the loss coefficient (η) at each temperature for a normal temperature type and a high temperature type according to the example, and a commercial product.

[Explanation of symbols]

 11 ... Coating film component 12 ... Dipole

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI C09D 127/06 C09D 127/06 201/00 201/00

Claims (17)

[Claims] 1. A vibration-damping paint characterized in that the coating component contains an active component that increases the amount of dipole moment in the coating component. 2. The composition according to claim 1, wherein the coating film component comprises a polar polymer selected from polyvinyl chloride, chlorinated polyethylene, acrylic rubber, acrylonitrile-butadiene rubber, styrene-butadiene rubber, and chloroprene rubber. The damping paint according to 1. 3. The vibration damping paint according to claim 1, wherein said coating film component comprises a polymer having a glass transition point in a use temperature range. 4. The vibration damping paint according to claim 1, wherein the active ingredient is contained in a ratio of 10 to 100 parts by weight with respect to 100 parts by weight of the coating film component. 5. The vibration damper according to claim 1, wherein the active ingredient is at least one compound selected from a compound containing a mercaptobenzothiazyl group. paint. 6. The compound containing a mercaptobenzothiazyl group, wherein the compound containing N, N-dicyclohexylbenzothiazyl-
6. The compound according to claim 5, which is 2-sulfenamide.
The described damping paint. 7. The vibration damping paint according to claim 5, wherein the compound containing a mercaptobenzothiazyl group is 2-mercaptobenzothiazole. 8. The vibration damping paint according to claim 5, wherein the compound containing a mercaptobenzothiazyl group is dibenzothiazyl sulfide. 9. The vibration damping paint according to claim 1, wherein the active ingredient is at least one compound selected from compounds having a benzotriazole group. 10. The compound having a benzotriazole group is 2- {2′-hydroxy-3 ′-(3 ″,
4 ", 5", 6 "tetrahydrophthalimidomethyl)-
The damping paint according to claim 9, which is 5'-methylphenyl} -benzotriazole. 11. The vibration damping paint according to claim 9, wherein the compound having a benzotriazole group is 2- {2′-hydroxy-5′-methylphenyl} -benzotriazole. 12. The compound having a benzotriazole group is 2- {2′-hydroxy-3′-t-butyl-
The vibration damping paint according to claim 9, which is 5'-methylphenyl} -5-chlorobenzotriazole. 13. The compound having a benzotriazole group is 2- {2'-hydroxy-3 ', 5'-di-t.
The damping paint according to claim 9, which is -butylphenyl} -5-chlorobenzotriazole. 14. The damping paint according to claim 1, wherein the active ingredient is one or more compounds selected from compounds having a diphenyl acrylate group. 15. The vibration damping paint according to claim 14, wherein the compound having a diphenyl acrylate group is ethyl-2-cyano-3,3-di-phenyl acrylate. 16. The coating composition according to claim 1, wherein at least two or more active components having different glass transition points are mixed in the coating film component, and the temperature range in which the vibration damping property is exhibited is extended. 16. The vibration damping paint according to any one of items 15 to 15. 17. The vibration damping paint according to claim 1, wherein the dielectric loss factor at a frequency of 110 Hz is 50 or more.