JP2002047467A - Damping adhesive rubber composition - Google Patents

Abstract

(57) [Summary] [Problem] To have a high vibration suppression function in a wide temperature range,
Provided is a rubber composition for a vibration damping adhesive having excellent adhesiveness to an oil surface, and excellent in hot water adhesiveness and heat resistant adhesiveness. SOLUTION: (A) A liquid isoprene rubber and (B) a peroxide are used in an amount of 1.3 to 1.8 per 1 mol of the liquid isoprene rubber.
Mole and (C) the adhesion-imparting compound and / or the adhesion-imparting compound per 100 parts by weight of the liquid isoprene rubber.
A rubber composition containing from 20 parts by weight to 20 parts by weight,
Physical properties of a cured product of the composition are as follows: G ≦ 1 MPa, tan δ ≧ 0.3, and the following relational expression (1): log (tan δ) ≧ (0.24) log G− at a temperature of −20 to 80 ° C. 0.67 (1) (wherein tan δ is the viscoelastic modulus of the cured product, and G is the elastic modulus of the cured product), and has high vibration damping performance, characterized by having a high vibration damping performance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber composition for a vibration-damping adhesive, and more particularly, to a vibration-damping adhesive having excellent vibration-absorbing ability, which is used for an oil-coated steel sheet forming a vehicle body component. The present invention relates to a one-component rubber composition for an agent.

[0002]

2. Description of the Related Art In recent years, the problem of noise and vibration has become a social problem, and measures for improving the environment are strongly desired. Therefore, various members or components such as floor materials and the like around an engine of an automobile, a suspension system, a drive system, a steering system, and the like use a vibration damping adhesive in order to maintain sound insulation and vibration damping properties.

[0003] This vibration damping adhesive is required to suppress the vibration generated by adhering to the site where the vibration is generated, or not to transmit the vibration to the surroundings. Therefore, it is required that the vibration can be effectively suppressed according to the frequency of the generated vibration. Also, depending on the application to be used, it is required to suppress vibration in a wide temperature range. Similarly, it is required to maintain a strong adhesive force in a vibration environment, and depending on the application to be used, oil surface adhesiveness, hot water adhesiveness,
Heat resistance is required.

Conventionally, as a structural adhesive having a vibration damping function over a wide temperature range, there has been conventionally used a vibration damping material using an epoxy resin, an acrylonitrile butadiene copolymer, methacrylate, an organic peroxide and an epoxy resin curing agent. (JP-A-3-294329) is known.

The vibration absorbing ability of such a resin composition for a vibration damping material is represented by a viscoelastic modulus tan δ, and a viscoelastic modulus tan δ
Is represented by the ratio of the viscous term to the elastic term (viscous term / elastic term). In this case, the larger the viscoelastic modulus tan δ is, the higher the vibration absorbing power is. Therefore, it is desirable that the viscosity term ≫ the elasticity term.

However, the conventional epoxy resin-based adhesive for vibration damping material has high adhesiveness and thus high elasticity.
Therefore, the elasticity term is large. Therefore, in order to increase the viscoelastic modulus tan δ, the viscosity term must be sufficiently increased, but there is a limit on the balance with the fact that the epoxy resin-based adhesive must maintain a high adhesive force. . As a result, the conventional epoxy resin-based adhesive for a vibration damping material has a low tan δ as a whole, and is insufficient as a vibration damping material. Therefore, a vibration damping adhesive having a high vibration damping function and excellent adhesion in a wide temperature range has been demanded.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, which has a high vibration damping function in a wide temperature range, has excellent adhesion to an oil surface, and Another object of the present invention is to provide a rubber composition for a vibration damping adhesive excellent in hot water adhesion and heat resistance.

[0008]

That is, (A) a liquid isoprene rubber, (B) 1.3 to 1.8 mol of a peroxide per 1 mol of a liquid isoprene rubber, and (C) an adhesion-imparting compound. And / or 1 to 20 parts by weight per 100 parts by weight of liquid isoprene rubber of a rubber composition, wherein the physical properties of a cured product of the composition are -20 to 80 ° C. Under the temperature, G ≦ 1 MPa, tan
δ ≧ 0.3 and the following relational expression (1): log (tan δ) ≧ (0.24) log G−0.67 (1) (where tan δ is the viscoelastic modulus of the cured product and G is the The present invention provides a vibration-damping adhesive rubber composition that has high vibration-damping performance and satisfies elastic modulus.

It is preferable that the (C) adhesion imparting compound and / or adhesion imparting compound is an epoxy group-containing compound.

[0010] Further, it is preferable to contain a latent curing agent or a curing catalyst.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. The rubber composition for vibration damping adhesive of the present invention (hereinafter, referred to as the composition of the present invention) comprises a liquid isoprene rubber, a peroxide,
It is a one-pack type rubber composition containing an adhesion imparting compound and / or an adhesion imparting compound.

(A) Liquid isoprene rubber Liquid isoprene rubber (IR) is produced by solution polymerization of isoprene with a lithium-based initiator or a titanium-based catalyst. Liquid IR used in the present invention
Is a liquid IR produced using any polymerization catalyst.
May be used. As the liquid IR used in the present invention, those having a weight average molecular weight of 29,000 to 50,000 are preferred from the viewpoints of workability, hardness of a cured product, and the like. An isoprene-based liquid rubber (having a molecular weight of about 1) obtained by cutting the main chain of natural rubber by ultraviolet irradiation in the presence of nitrobenzene.
) May be used together with the liquid IR as long as the object of the present invention is not impaired.

(B) Peroxide The peroxide used in the present invention can be appropriately selected depending on the curing conditions of the rubber composition. For example, when the rubber composition according to the present invention is used for a vehicle steel plate as a vibration damping adhesive and is cured in a paint baking process in an automobile assembly line, the paint composition is cured at 160 ° C. to 200 ° C.
A peroxide curable in 5 to 60 minutes may be used.

In the present invention, the peroxide used is dicumyl peroxide (trade name: Parkmill D)
(Manufactured by NOF Corporation), benzoyl peroxide, diisopropylbenzene hydroperoxide (trade name: Parkmill P (manufactured by NOF Corporation), etc.), t-butyl hydroperoxide (80% di-t-butyl peroxide solution, etc.) ), P-methane hydroperoxide (trade name: Permenta H (manufactured by NOF Corporation), cumene hydroperoxide (trade name: Parkmill H-80 (manufactured by NOF Corporation), etc.), 2,5-dimethyl-2, Organic peroxides such as 5-di-t-butylperoxyhexane (trade name Perhexa 25B (manufactured by NOF Corporation) and the like) can be mentioned. Among these, dicumyl peroxide and the like can be preferably mentioned from the viewpoint of satisfying the above curing temperature conditions.

In the present invention, the content of the peroxide is 1.3 to 1.8 mol per 1 mol of the liquid IR. Within this range, the crosslinking density of the liquid isoprene rubber is low, and the elastic modulus of the cured product of the composition of the present invention can be suppressed low. As a result, a wide temperature range, specifically, -20 to 20
In a wide temperature range including a temperature range of 80 ° C., the viscoelastic modulus tan δ can be relatively increased. Viscoelastic modulus t
By increasing an δ, the obtained composition of the present invention can obtain high damping properties.

(C) Adhesion-imparting compound and / or adhesion-imparting compound The adhesion-imparting compound and the adhesion-imparting compound used in the present invention include an adhesion-imparting compound generally incorporated in a rubber composition, and an adhesion-imparting compound. An imparting compound is available. Examples of the adhesion-imparting compound include silane-based adhesion promoters such as N-β- (aminoethyl) -γ-aminopropyltrimethoxysilane and γ-glycidoxypropyltrimethoxysilane, and 2-hydroxyethyl (meth). Oil-surface adhesion promoters such as acryloyl phosphate and nitrogen-containing (meth) acrylate are exemplified. These may be used alone or in combination of two or more. Examples of the adhesion-imparting compound include an alkylphenol formaldehyde-based resin and a rosin-modified resin thereof, an alkylphenol acetylene-based resin, a coumarone indene resin, a xylene formaldehyde resin, polybutene, hydrogenated rosin and processed products thereof, and pine tar. These may be used alone or in combination of two or more.
The composition of the present invention may contain both of these adhesion-providing compounds or adhesion-providing compounds, or may contain only one of them.

However, it is particularly preferable to use, for example, an epoxy group-containing compound as the adhesion-imparting compound or the adhesion-imparting compound in order to impart excellent adhesion or adhesion. As such an epoxy group-containing compound, an epoxy group-containing compound having an average of one or more epoxy groups in one molecule used as a component of an epoxy resin-based adhesive is exemplified, and specifically, glycidyl ether of bisphenol A Type epoxy resin and its derivatives, glycidyl ether type epoxy resin of bisphenol F, glycidyl ether type epoxy resin of phenol novolak, glycidyl ether type epoxy resin of cresol novolac, aliphatic glycidyl ether type epoxy resin, aliphatic glycidyl ester type epoxy resin, Aromatic glycidyl ether epoxy resin, aromatic glycidyl ester epoxy resin, glycerin glycidyl ether epoxy resin, dimer acid glycidyl ester epoxy resin, cycloaliphatic epoxy Resin, glycidyl amine type epoxy resins, heterocyclic epoxy resins, acrylonitrile-butadiene copolymer and bisphenol A
Alternatively, an acrylonitrile-butadiene-modified epoxy resin obtained by copolymerizing an F-type epoxy resin, a urethane-modified epoxy resin obtained by copolymerizing a terminal isocyanate group-containing urethane prepolymer and an epoxy resin,
Epoxy acrylate and the like can be mentioned. As these epoxy resins, those commonly used in thermosetting epoxy resin compositions can be used, and are not particularly limited by the molecular weight, the production method, and the like.

In the present invention, the content of (C) the adhesion-imparting compound and / or the adhesion-imparting compound is 1 to 20 parts by weight based on 100 parts by weight of the liquid isoprene rubber (A).
Parts by weight, preferably 2.5 parts by weight to 10 parts by weight. When in this range, the adhesiveness of the composition of the present invention,
Particularly, the hot water adhesion is good.

(C) The composition of the present invention using an epoxy group-containing compound as the adhesion-imparting compound and / or the adhesion-imparting compound may further contain the above-mentioned curing agent or curing catalyst of the component (C). it can. As such a curing agent or a curing catalyst, various latent curing agents and curing catalysts mixed with a one-pack type epoxy resin can be used.

Examples of the latent curing agent and the curing catalyst include amine-based latent curing agents that are usually used in epoxy resin compositions. From the viewpoint of suppressing foaming of the cured product, the activation temperature of the amine-based latent curing agent is preferably lower than the curing temperature of the liquid isoprene rubber used in the present invention. From the viewpoint of maintaining good properties, the temperature is preferably 80 ° C. or higher.

Examples of the amine latent curing agent that can be used in the present invention include ketimine, which is a reaction product of an aliphatic polyamine and a ketone; n-hexylamine, monoethylamine, benzylamine, diethylamine, piperidine, Boron trifluoride, which is a compound of an amine such as triethylamine and aniline with boron trifluoride
Amine complex; phosphorus pentafluoride-amine complex, which is a compound of an amine such as ethylamine, isopropylamine, butylamine, laurylamine, and benzylamine with phosphorus pentafluoride and antimony pentafluoride; antimony pentafluoride-amine complex; butoxy Boroxine-butylamine complex; zinc bromide-p-phenylenediamine complex; boron trifluoride-
Acetylacetone complex; dicyandiamide or o-tolylbiguanide, α-2,5-dimethylbiguanide,
Derivatives of dicyandiamide such as α, ω-diphenylbiguanide, 5-hydroxynaphthyl-1-biguanide; succinic hydrazide, adipic hydrazide, isophthalic hydrazide, p-oxybenzoic hydrazide, salicylic hydrazide, phenylaminopropionic hydrazide and the like Acid hydrazide; diaminomaleonitrile or derivatives thereof; melamine derivatives such as melamine or diallylmelamine; amine imides synthesized from carboxylic acid esters, dimethylhydrazine and epoxy compounds; diamines such as ethylenediamine, hexamethylenediamine, piperidine and sebacic acid; A salt with an aliphatic dicarboxylic acid; polyamine such as 2,4,4-trimethyl-2,4,7-trihydroxyflavan and N, N′-dimethyl 1,
Salts with polyhydroxyphenols such as 3-propanediamine; phenylphosphonates of polyamines; phenylphosphates of polyamines; 2-heptadecylimidazole;
2,4-diamino-6- [2-methylimidazolyl-
(1)]-Ethyl-S-triazine, 2-phenyl-
4,5-dihydroxymethylimidazole, 2-phenyl-4-methyl-5-hydroxymethylimidazole,
Imidazoles such as 1-dodecyl-2-methyl-3-benzylimidazolium chloride and 1,3-dibenzyl-2-methylimidazolium chloride;
Diamino-6- [2′-methylimidazolyl- (1 ′)]
-Ethyl-5-triazine isocyanuric acid adduct (trade name 2MAOK, manufactured by Shikoku Kasei Co., Ltd.), and microcapsule type amine (trade name: NOVACURE HX3722, manufactured by Asahi Kasei Co., Ltd.). These may be used alone or in combination of two or more.

The composition of the present invention may contain, besides the above components, fillers, plasticizers, anti-dripping agents, pigments, dyes, antioxidants, antioxidants, antistatics, as long as the object of the present invention is not impaired. Agents, flame retardants, dispersants, solvents and the like.

As the filler, various types of inorganic fillers and organic fillers can be used, including calcium carbonate, silica and calcium oxide. Examples of the inorganic filler include diatomaceous earth; iron oxide, zinc oxide,
Titanium oxide, barium oxide, magnesium oxide; magnesium carbonate, zinc carbonate; limestone clay, kaolin clay, calcined clay; carbon black;
Resin acid and fatty acid ester-treated products are exemplified. Organic fillers include, for example, balun (spherical), hollow, and core-shell fillers such as crosslinked polyester, polystyrene, styrene / acrylic, and urea resins; carbon fibers, synthetic fibers,
Fibrous fillers such as natural fibers; and powdered fillers such as wood powder, bamboo powder, coconut shell powder, cork powder, and pulp powder. These may be used alone or in combination of two or more.

The plasticizer includes, for example, paraffin-based process oil, naphthene-based process oil, and aroma-based process oil.

Examples of the anti-dripping agent include acetylene black, Ketjen black, colloidal silica and the like. Commercial products can also be used, for example, Dispalon manufactured by Kusumoto Kasei.

As the pigment, either an inorganic pigment or an organic pigment can be used. Examples of the inorganic pigment include titanium dioxide, zinc oxide, ultramarine, red iron, lithopone, lead, cadmium, iron, cobalt, aluminum, hydrochloride, and sulfate. Examples of the organic pigment include an azo pigment and a copper phthalocyanine pigment. These may be used alone or in combination of two or more.

The antioxidant includes, for example, hindered phenol compounds. Antioxidants, for example,
Butylhydroxytoluene (BHT) and butylhydroxyanisole (BHA). The antistatic agent is
Examples include quaternary ammonium salts; hydrophilic compounds such as polyglycols and ethylene oxide derivatives.
Examples of the flame retardant include chloroalkyl phosphate, dimethyl methyl phosphonate, bromine / phosphorus compound, ammonium polyphosphate, neopentyl bromide polyether, and brominated polyether.

The method for producing the composition of the present invention is not particularly limited. Preferably, the above-mentioned components are sufficiently kneaded under reduced pressure or a nitrogen atmosphere using a stirring device such as a mixing mixer, and uniformly dispersed. It is made into a rubber composition and stored in a sealed container.

The curing conditions of the composition of the present invention can be appropriately determined depending on the above-mentioned components to be used, and are not particularly limited. 15 minutes to 6 hours at a temperature of
Preferably, it can be cured in 0 minutes. As a method for curing the composition of the present invention, for example, in an automobile manufacturing line, the composition of the present invention is applied to a flange of a frame member or the like,
In the electrodeposition coating process of the vehicle body, curing by baking and drying heat is exemplified. In this case, it is possible to bond while filling the gap between the flanges.

The cured product of the composition of the present invention thus obtained has a physical property of G ≦ 1M at a temperature of −20 to 80 ° C.
Pa, tan δ ≧ 0.3, and the following relational expression (1); log (tan δ) ≧ (0.24) log G−0.67 (1) (where tan δ is the viscoelastic modulus of the cured product, and G is the cured Elastic modulus of the product). For details, please refer to the application
No. 313004).

In the composition of the present invention, the compounding amount of (A) the liquid isoprene rubber, (B) the peroxide, and (C) the adhesion-imparting compound and / or the adhesion-imparting compound is set within the above-mentioned predetermined range. In a limited manner, the crosslinked density of the cured product of the composition of the present invention is kept low. By doing so, the elastic modulus of the cured product can be made 1 MPa or less. G ≦ 1M
When Pa is used, the rigidity of the vehicle body member to be bonded using the composition of the present invention is not changed, so that a problem of increase in vibration when the resonance frequency changes can be avoided (rubber composition). Elasticity of cured product of 1MP
If it is larger than a, the peak of the vibration value with respect to a constant input of the vehicle body member shifts to the high frequency side, so that when it matches the road surface vibration input, the vibration is amplified). Further, by lowering the elastic modulus G, the viscoelastic modulus tan δ can be relatively increased. The absolute value of the viscoelastic modulus tan δ is 0.
Needless to say, the damping effect becomes particularly high when the ratio is 3 or more.

When the cured product of the composition of the present invention satisfies the above relational expression (1), a clear vibration reduction effect can be obtained in a steel sheet to which the composition of the present invention has been applied and adhered. . For example, when the composition of the present invention that satisfies the above relational expression (1) is applied to two steel sheets, the steel sheets are bonded, and then resistance welding is performed, the loss factor with respect to vibration is simply calculated without applying the composition of the present invention. A sufficiently large value can be set for the loss coefficient of the steel sheet subjected to only resistance welding to vibration, and the vibration damping effect clearly appears.

The composition to which the composition of the present invention is adhered may be, for example, an automobile body component, for example, around an automobile engine.
Examples include a suspension system, a drive system, a steering system, and the like, and an oil-surface steel plate that forms various members or components such as flooring.

The rubber composition for a vibration damping adhesive of the present invention has excellent adhesion since it has the above constitution. Also,
It has high damping properties in a wide temperature range. Therefore, it is suitably used as a vibration damping adhesive for vehicle steel plates.
Further, since the composition of the present invention uses liquid isoprene rubber as a main polymer, it has high adhesiveness and vibration damping properties even when an oil-surface steel plate that has not been degreased is directly adhered. The composition of the present invention containing an epoxy group-containing compound as an adhesion-imparting compound and / or an adhesion-imparting agent is particularly excellent in adhesiveness or adhesiveness, particularly in hot water adhesiveness. Although the rubber composition of the present invention is intended for a one-component rubber composition, the rubber composition of the present invention can be used as a two-component rubber composition when the composition is used.

[0035]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. <Production of Rubber Composition> (Examples 1 to 4 and Comparative Examples 1 to 5) The materials shown below were stirred in a quantitative ratio shown in Table 1 at room temperature and under reduced pressure using a high-viscosity mixing stirrer. The mixture was mixed to obtain each rubber composition. About the obtained rubber composition, the following methods were measured and evaluated about vibration damping property and shear adhesive strength (initial adhesive property, heat-resistant adhesive property, water-resistant adhesive property).

Liquid isoprene rubber A: LIR50, manufactured by Kuraray Co., Ltd., weight average molecular weight 47000 Liquid isoprene rubber B: LIR30, manufactured by Kuraray Co., Ltd., weight average molecular weight 29000 Plasticizer C: paraffin-based process oil, PS-32,
Idemitsu Petrochemical Co., Ltd. Adhesion imparting compound D: novolak phenolic resin (containing hexamethylenetetramine) Sumilite resin PR12
987, manufactured by Sumitomo Durez Co., Ltd .: adhesion-providing compound E: bisphenol A type epoxy resin YD-128; manufactured by Toto Kasei Co., Ltd .; Mil peroxide, Park mill D4
0, Anti-dripping agent H, manufactured by NOF Corporation: Fumed silica, Leoloseal QS1
02S, manufactured by Tokuyama Corporation Filler J: calcium carbonate, snow light SSS, manufactured by Maruo Calcium

[0037]

[Table 1]

(Vibration Suppression Test) An appropriate amount of a sample was discharged onto a release PET sheet, and a 2 mm thick spacer was sandwiched between the release PET sheets.
It is sandwiched with a sheet and pressed for 30 minutes with a press molding machine heated to 180 ° C. to crosslink and form, and the thickness is 2
mm sheet-like cured product was obtained. This was molded into a circular shape having a diameter of 25 mm, and a viscoelasticity measuring device (RDA2, manufactured by Rheometric Scientific F.E.) was used.
Temperature rise rate 5 ° C / min, s in the temperature range of 50-100 ° C
The viscoelasticity t at −20 ° C., 20 ° C., and 80 ° C. is obtained by measuring under the conditions of train 0.5%, load 50 g, and 10 Hz.
An δ and elastic modulus G were measured. In addition, the evaluation was -20.
G ≦ 1 MPa and lo at all temperatures of 20 ° C., 20 ° C. and 80 ° C.
g (tan δ) −0.24 * logG + 0.67 ≧ 0
(However, tan δ is the viscoelastic modulus of the cured product, G is the elastic modulus (MPa) of the cured product). Indicated.

(Shear adhesion test)
Performed according to IS8030. The test piece is a 25 * 75 * 0.8mm steel plate coated with rust-preventive oil, and 25
mm * 25mm * 1mm, 180 ℃
A test piece cured by heating for 30 minutes was prepared under the following conditions.
Was measured for adhesive strength. The tensile speed was 50 mm / min. The results are shown in Table 1. In addition, as an overall evaluation, in the initial adhesion test, the heat resistance adhesion test, and the hot water adhesion test, those in which the strength was 0.1 MPa or more and the destruction state was CF were evaluated as ○, and those not evaluated were evaluated as ×.

Initial Adhesion Measured after standing for 1 day at 20 ° C. and 55% RH. Heat resistance: Measured after standing at 100 ° C for one week. Warm water adhesion After leaving for 1 day under conditions of 20 ° C and 55% RH, it was left for 7 days in 50 ° C water, and then measured. CF: Rubber composition break AF: Interface peeling

[0041]

The rubber composition for a vibration damping adhesive of the present invention has excellent adhesive strength, particularly excellent heat and hot water resistance, and
Since it has high vibration damping properties in a wide temperature range, it can be suitably used as a vibration damping adhesive for automotive steel sheets.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C08L 9/00 C08L 9/00 63/00 63/00 A 101/00 101/00 C09K 3/00 C09K 3 / 00 PF16F 15/08 F16F 15/08 B (72) Inventor Kazushi Kimura 2-1 Oiwake, Hiratsuka-shi, Kanagawa Yokohama Rubber Co., Ltd. Hiratsuka Factory (72) Inventor Makoto Oyama, Chuo 1, Wako-shi, Saitama No.4-1 in Honda R & D Co., Ltd. (72) Inventor Takushi Ishimoto 1-4-1 Chuo, Wako-shi, Saitama F-term in Honda R & D Co., Ltd. F-term (reference) 3J048 AA01 BA25 BD04 4J002 AC06W AF02X BB16X BK00X CC03X CC12X CD05X CD06X CD18X CD19X CD20X EH107 EK016 EK026 EK028 EK036 EK046 EK056 EK068 EQ028 ER028 EU118 EX037 FD148 FD34X FD347 GJ00 4J040 BA202 CA031 DA132 DK012 HD24 HDB D36 KA16

Claims (3)

[Claims] 1. A liquid isoprene rubber (A) and a peroxide (B) are used in an amount of 1.3 to 1.8 per mol of the liquid isoprene rubber.
Mole and (C) the adhesion-imparting compound and / or the adhesion-imparting compound per 100 parts by weight of the liquid isoprene rubber.
A rubber composition containing from 20 parts by weight to 20 parts by weight,
Physical properties of a cured product of the composition are as follows: G ≦ 1 MPa, tan δ ≧ 0.3, and the following relational expression (1): log (tan δ) ≧ (0.24) log G− at a temperature of −20 to 80 ° C. 0.67 (1) (wherein tan δ is the viscoelastic modulus of the cured product, and G is the elastic modulus of the cured product), and has high vibration damping performance, characterized by having a high vibration damping performance. 2. The vibration damping adhesive rubber composition according to claim 1, wherein the (C) adhesion imparting compound and / or adhesion imparting compound is an epoxy group-containing compound. 3. The vibration damping adhesive rubber composition according to claim 2, further comprising a latent curing agent or a curing catalyst.