JP4900614B2 - Adhesive silicone rubber composition - Google Patents

Description

  The present invention relates to a silicone rubber composition having excellent adhesion to an organic resin.

  Since silicone rubber is excellent in various properties such as weather resistance, heat resistance, cleanliness, rubber elasticity, etc., there is an increasing demand for integrally molding an organic resin and silicone rubber under short-time curing conditions. Under such circumstances, it is optimal to use an addition-curable silicone rubber composition in consideration of curing in a short time and characteristics as a sealant.

Conventionally, in order to bond an addition-curable silicone rubber composition and an organic resin, there is a method in which a primer is applied to the surface of a molding resin, and an uncured silicone rubber composition is applied and cured from thereover to be bonded. In addition, a primer application process is required for the work, which is troublesome. Therefore, various methods for curing the self-adhesive silicone rubber material from above the molding resin have been proposed (Patent Documents 1 to 3: Japanese Patent Laid-Open Nos. 6-1772738, 3511127, and 3944681).
However, in these methods, the initial adhesion of the resin / silicone molded article is good, but there is a problem that the adhesion surface easily peels off when an environmental test such as a water resistance test is performed thereafter.

Japanese Patent Laid-Open No. 6-1772738 Japanese Patent No. 3511127 Japanese Patent No. 3944681

  Accordingly, an object of the present invention is to provide an adhesive silicone rubber composition having excellent initial adhesiveness and environmental resistance to organic resins.

  The present invention has been made in order to solve the above-mentioned problems. As an adhesion assistant, an organic silicon containing a phenyl skeleton and at least one structure represented by the following formulas (1) and (2) in the molecule, respectively. By adding the compound, it was confirmed that the compound had excellent adhesiveness to the organic resin, and also had excellent environmental adhesiveness such as water-resistant adhesiveness, and reached the present invention.

Accordingly, the present invention provides the following adhesive silicone rubber composition.
Claim 1:
A silicone rubber composition for self-adhesion to an organic resin,
(A) Organopolysiloxane having two or more silicon-bonded alkenyl groups in one molecule: 100 parts by mass
(B) Organohydrogenpolysiloxane having two or more SiH groups in one molecule: 0.5 to 20 parts by mass
(C) Hydrosilylation reaction catalyst: effective amount,
(D) An organosilicon compound containing at least one monovalent or divalent organic group having an aromatic ring in the molecule and at least one organic group represented by the following formulas (1) and (2) : 0.1 to 50 parts by mass -R ¹ -SiR ₂ -H (1)
-R _² -SiR ² -X ⁽²⁾
Wherein R ¹ and R ² are unsubstituted or substituted divalent hydrocarbon groups having 1 to 10 carbon atoms, X is a monovalent organic group containing at least one epoxy group, and R is independent of each other. Represents an unsubstituted or substituted monovalent hydrocarbon group having 1 to 10 carbon atoms.)
An adhesive silicone rubber composition comprising:
Claim 2:
The molar ratio of the alkenyl group in component (A) to the SiH group in component (B) is in the range of SiH group / alkenyl group = 0.8 to 3.0. Adhesive silicone rubber composition.
Claim 3:
The adhesive silicone rubber composition according to claim 1 or 2, wherein the epoxy group in component (D) is an alicyclic epoxy group.
Claim 4:
The adhesive silicone rubber composition according to any one of claims 1 to 3, wherein the component (D) has no siloxane bond in the molecule.
Claim 5:
Furthermore, 0.1-50 mass parts of nitrogen-containing organic compounds are contained as (E) component with respect to 100 mass parts of (A) component, Adhesive silicone of any one of Claims 1-4 characterized by the above-mentioned. Rubber composition.
Claim 6:
6. The adhesive silicone rubber composition according to claim 5, wherein the nitrogen-containing organic compound is at least one selected from the group consisting of a triazole compound and an imidazole compound.

  The adhesive silicone rubber composition of the present invention can be quickly cured under short-time curing conditions and can sufficiently adhere to general-purpose resins such as ABS resin and polystyrene resin or organic resins such as various engineering plastics. Maintains excellent adhesion even after environmental resistance tests (water resistance, acid resistance, etc.). Further, by selecting a metal material, it can be peeled from the silicone rubber molding frame with sufficient practicality. Therefore, this addition-curable adhesive silicone rubber composition is economically advantageous with simple operation without using a primer, and maintains the original characteristics of the organic resin and satisfactorily adheres to the organic resin. To get.

As the organopolysiloxane having two or more silicon atom-bonded alkenyl groups in one molecule of the component (A) according to the present invention, one or more of those represented by the following average composition formula (3) are preferably used. be able to.
R ³ _a SiO _{(4-a) / 2} (3)

In the formula, R ³ is an unsubstituted or substituted monovalent hydrocarbon group having the same or different carbon number of 1 to 10, preferably 1 to 8, and a is 1.5 to 2.8, preferably 1.8. It is a positive number in the range of ˜2.5, more preferably 1.95 to 2.05. Here, as the unsubstituted or substituted monovalent hydrocarbon group bonded to the silicon atom represented by R ³ , a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a tert-butyl group, Pentyl group, neopentyl group, hexyl group, cyclohexyl group, octyl group, nonyl group, alkyl group such as decyl group, aryl group such as phenyl group, tolyl group, xylyl group, naphthyl group, benzyl group, phenylethyl group, phenylpropyl Aralkyl groups such as groups, vinyl groups, allyl groups, propenyl groups, isopropenyl groups, butenyl groups, hexenyl groups, cyclohexenyl groups, octenyl groups and other alkenyl groups, and some or all of the hydrogen atoms of these groups are fluorine. Substituted with halogen atoms such as bromine, chlorine, cyano groups, etc., such as chloromethyl group, chloropro Group, bromoethyl group, trifluoropropyl group, but cyanoethyl group and the like, all R ³ of 90 mol% or more, and particularly it is preferable that all of R ³ other than the alkenyl group is a methyl group. Further, at least two of R ³ must be alkenyl groups (preferably those having 2 to 8 carbon atoms, more preferably 2 to 6 and particularly preferably vinyl groups). The alkenyl group content in the organopolysiloxane is 5.0 × 10 ⁻⁶ mol / g to 5.0 × 10 ⁻³ mol / g, particularly 1.0 × 10 ⁻⁵ mol / g to 1.0. It is preferable to set it as x10 < ^-3 > mol / g. If the amount of the alkenyl group is less than 5.0 × 10 ⁻⁶ mol / g, the rubber hardness is low and sufficient sealability cannot be obtained, and if it exceeds 5.0 × 10 ⁻³ mol / g, the crosslinking density is low. It becomes too high and becomes brittle rubber. This alkenyl group may be bonded to a silicon atom at the end of the molecular chain, or may be bonded to a silicon atom in the middle of the molecular chain, or may be bonded to both. Desirably, it contains a bonded alkenyl group. The structure of the organopolysiloxane basically has a linear structure, but may be partially a branched structure, a cyclic structure, or the like. Usually, the main chain is a diorganosiloxane unit (R ³ ₂ SiO _2/2 ), which is a linear diorganopolysiloxane having both molecular chain ends blocked with triorganosiloxy groups (R ³ ₃ SiO _1/2 ). The molecular weight is not particularly limited, and is from a low-viscosity liquid (for example, about 100 to 500,000 mPa · s at 25 ° C., particularly about 500 to 100,000 mPa · s) to a high-viscosity raw rubber (for example, 25 ° C. Can be used up to 1,000,000 mPa · s or more, especially 10,000,000 mPa · s or more and a gum having no self-fluidity).

The component (B) is an organohydropolysiloxane having 2 or more, preferably at least 3 hydrogen atoms (SiH groups) bonded to silicon atoms in one molecule, and the SiH groups in the molecule are the above (A). The alkenyl group bonded to the silicon atom in the component is cross-linked by a hydrosilyl addition reaction, and acts as a curing agent for curing the composition. This (B) component organohydrogenpolysiloxane has the following average composition formula (4)
R ⁴ _b H _c SiO _{(4-bc) / 2} (4)
Wherein R ⁴ is an unsubstituted or substituted monovalent hydrocarbon group having 1 to 10 carbon atoms, b is 0.7 to 2.1, c is 0.001 to 1.0, and b + c is a positive number satisfying 0.8 to 3.0.)
One or two or more of those having at least 2 (usually 2 to 300), preferably 3 to 100, more preferably 3 to 50 silicon-bonded hydrogen atoms in one molecule Combinations are preferably used. Here, as the monovalent hydrocarbon group for R ^4, the same groups as those exemplified for R ^{3 can} be exemplified, but those having no aliphatic unsaturated group are preferred, and methyl group and phenyl group are particularly preferred. preferable. Further, b is preferably 0.8 to 2.0, c is preferably 0.01 to 1.0, b + c is preferably 1.0 to 2.5, and the molecular structure of the organohydrogenpolysiloxane is: The structure may be any of linear, cyclic, branched, and three-dimensional network. In this case, the number of silicon atoms in one molecule (or the degree of polymerization) is preferably 2 to 300, particularly about 4 to 150 at room temperature (25 ° C.). In addition, the hydrogen atom couple | bonded with a silicon atom may be located in any of the molecular chain terminal and the middle of a molecular chain, and may be located in both.

Examples of the organohydrogenpolysiloxane of component (B) include 1,1,3,3-tetramethyldisiloxane, 1,3,5,7-tetramethylcyclotetrasiloxane, methylhydrogencyclopolysiloxane, methylhydro Gensiloxane / dimethylsiloxane cyclic copolymer, tris (dimethylhydrogensiloxy) methylsilane, tris (dimethylhydrogensiloxy) phenylsilane, dimethylhydrogensiloxy-capped methylhydrogenpolysiloxane at both ends, trimethylsiloxy group-capped methylhydro at both ends Genpolysiloxane, trimethylsiloxy group-capped dimethylsiloxane / methylhydrogensiloxane copolymer, both ends dimethylhydrogensiloxy group-capped dimethylpolysiloxane , Both ends dimethylhydrogensiloxy group-blocked dimethylsiloxane / methylhydrogensiloxane copolymer, both ends trimethylsiloxy group-blocked methylhydrogensiloxane / diphenylsiloxane copolymer, both ends trimethylsiloxy group-blocked methylhydrogensiloxane / diphenylsiloxane A dimethylsiloxane copolymer, a copolymer comprising (CH ₃ ) ₂ HSiO _1/2 units and SiO _4/2 units, (CH ₃ ) ₂ HSiO _1/2 units, SiO _4/2 units and (C ₆ And a copolymer comprising H ₅ ) SiO _3/2 units.

  The blending amount of the organohydrogenpolysiloxane of the component (B) is 0.5 to 20 parts, particularly 0.6 to 15 parts with respect to 100 parts of the organopolysiloxane of the component (A) (parts by mass). However, the molar ratio between the hydrogen atom (SiH group) bonded to the silicon atom of the organohydrogenpolysiloxane and the total amount of alkenyl groups bonded to the silicon atom in the component (A) is SiH group / alkenyl group = 0. 8-3.0, especially 1.0-2.0 are preferred. Even if this ratio is smaller than 0.8 or larger than 3.0, the compression set of the cured silicone rubber becomes large, and the sealing performance becomes insufficient.

  The component (C) hydrosilylation reaction catalyst (addition reaction catalyst) includes platinum black, platinous chloride, chloroplatinic acid, a reaction product of chloroplatinic acid and a monohydric alcohol, and a complex of chloroplatinic acid and an olefin. Platinum catalyst such as platinum bisacetoacetate, palladium catalyst, rhodium catalyst, and the like. In addition, the compounding amount of this addition reaction catalyst can be made into a catalytic amount, and is usually 0.5 to 1,000 ppm with respect to the total amount of components (A) and (B) in terms of the weight of the platinum group metal. It is about 1 to 500 ppm.

Component (D) is an adhesion assistant, which forms the basis of the composition of the present invention, contains at least one monovalent or divalent organic group having an aromatic ring in the molecule, and has the following formula (1) And at least one organic group represented by the formula (2), preferably 1 to 10 organic groups represented by the formula (1), particularly 2 to 5, and 1 organic group represented by the formula (2). It is an organosilicon compound which contains 10 to 10 and especially 1 to 5 and does not have a siloxane bond (-Si-O-Si-) in the molecule.
—R ¹ —SiR ₂ —H (1)
-R _² -SiR ² -X ⁽²⁾
Wherein R ¹ and R ² are unsubstituted or substituted divalent hydrocarbon groups having 1 to 10 carbon atoms, X is a monovalent organic group containing at least one epoxy group, and R is independent of each other. Represents an unsubstituted or substituted monovalent hydrocarbon group having 1 to 10 carbon atoms.)

Here, examples of the divalent hydrocarbon group for R ¹ and R ² include alkylene groups having 1 to 10 carbon atoms, preferably 2 to 6 carbon atoms, arylene groups, and combinations of alkylene groups and arylene groups. The monovalent hydrocarbon group for R is preferably an alkyl group such as a methyl group, an ethyl group, a propyl group, or a butyl group, or an aryl group such as a phenyl group, preferably a carbon number other than an aliphatic unsaturated bond. Examples thereof include 1 to 10, particularly 1 to 6. Next, as the epoxy group-containing organic group X, a glycidoxyalkyl group such as 2-glycidoxyethyl group, 3-glycidoxypropyl group, 4-glycidoxybutyl group; 2- (3,4- Examples thereof include an epoxycyclohexylalkyl group such as an epoxycyclohexyl) -ethyl group and a 3- (3,4-epoxycyclohexyl) -propyl group. Among them, an organic group containing an alicyclic epoxy group is recommended from the viewpoint of reactivity.

  On the other hand, examples of the monovalent or divalent organic group having an aromatic ring in the molecule include the following benzene ring structures (for example, phenyl or phenylene skeleton), dibenzene ring structures (for example, biphenyl or biphenylene skeleton), and the following And a monovalent or divalent aromatic organic group having a monovalent or divalent structure in which a phenylene skeleton and a phenyl or phenylene skeleton are linked by a divalent linking group Y.

［式中、Ｒ⁵〜Ｒ¹³は互いに同一又は異種の水素原子、ハロゲン原子、水酸基、非置換又は置換のアルキル基等の炭素数１〜６の一価炭化水素基、又は炭素数１〜６のアルコキシ基から選ばれる一価の基である。Ｙは下記

（Ｒ¹⁴、Ｒ¹⁵は互いに同一又は異種の水素原子、ハロゲン原子、非置換又は置換のアルキル基等の炭素数１〜６の一価炭化水素基から選ばれる一価の基又はＲ¹⁴とＲ¹⁵とが結合してこれらが結合する炭素原子と共に炭素数４〜１０の非芳香炭素環又は複素環を形成する基、ｄは１以上の整数、特に１〜６の整数を示す。）から選ばれる二価の基である。］

[Wherein, R ^{5 to} R ¹³ are the same or different from each other, a hydrogen atom, a halogen atom, a hydroxyl group, a monovalent hydrocarbon group having 1 to 6 carbon atoms such as an unsubstituted or substituted alkyl group, or 1 to 6 carbon atoms. It is a monovalent group selected from the alkoxy groups. Y is the following

(R ¹⁴ and R ¹⁵ are each a monovalent group selected from a monovalent hydrocarbon group having 1 to 6 carbon atoms such as a hydrogen atom, a halogen atom, an unsubstituted or substituted alkyl group which are the same or different from each other, or R ¹⁴ and R ^{14. 15} is a group that forms a non-aromatic carbocyclic or heterocyclic ring having 4 to 10 carbon atoms together with the carbon atom to which these are bonded, and d is an integer of 1 or more, particularly an integer of 1 to 6. Divalent group. ]

  In addition, the organosilicon compound of component (D) does not have a siloxane bond (—Si—O—Si— structure) in the molecule from the viewpoint of adhesion to organic resins, particularly adhesion under hot water resistance conditions. For example, an organosilane compound having about 1 to 10, preferably 2 to 8, more preferably about 3 to 6 silicon atoms in one molecule is suitable.

The following compounds can be illustrated as a specific example of such an adhesion assistant of component (D).

In addition, the said adhesive adjuvant may use the said component independently, or may use 2 or more types together.
The blending amount of the component (D) adhesion assistant is preferably 0.1 to 50 parts with respect to 100 parts of the organopolysiloxane (A). If the blending amount is less than 0.1 part, sufficient adhesiveness is obtained. If it exceeds 50 parts, the physical properties may be lowered. Preferably it is 0.2-30 parts.

  Also, organic compounds or organosilicon compounds having at least one alkenyl group and ester group, for example, unsaturated carboxylic acids such as acrylic acid, methacrylic acid, vinyl acetic acid, benzoic acid allyl ester, phthalic acid diallyl ester, pyromellitic An organic compound or an organic silicon compound containing allyl esters such as acid tetraallyl ester and alkyl acid allyl ester may be blended.

  The nitrogen-containing organic compound (E) imparts low compression strain characteristics to the composition of the present invention, and is preferably at least one nitrogen-containing organic compound selected from the group consisting of triazole compounds and imidazole compounds. is there. Examples of the triazole compound include 1,2,3-triazole, 1,2,4-triazole, benzotriazole, N-trimethylsilyl-benzotriazole, and the like. Examples of the imidazole compound include imidazole, 1-methylimidazole, and benzimidazole. These can be used singly or in combination of two or more.

  The blending amount of the nitrogen-containing organic compound of component (E) is preferably 0.1 to 50 parts with respect to 100 parts of organopolysiloxane of component (A), and a sufficient effect is obtained when the blending amount is less than 0.1 part. If it exceeds 50 parts, curing failure may occur. Preferably it is 0.2-30 parts.

  The adhesive silicone rubber composition of the present invention can be suitably used for obtaining a composite with an organic resin molded body. In this case, as the organic resin, ABS resin, polystyrene resin, polycarbonate resin, polyester resin, epoxy Examples thereof include a resin, a polyamide resin, a polyacetal resin, a polyphenylene sulfide resin, a polyethylene terephthalate resin (PET), and a polyethylene naphthalate resin (PEN).

  The adhesive silicone rubber composition of the present invention can be easily cured by addition reaction by heating. In this case, the curing conditions are not particularly limited, but are usually 60 to 180 ° C. for 1 second to 360 minutes. Is preferred.

  Hereinafter, although an Example and a comparative example are shown, this invention is not restrict | limited to the following Example. In addition, all the parts in each example are mass parts.

[Examples 1 and 2 and Comparative Examples 1 to 3]
Adhesive aid 1, 2
1 mol and 2 mol of Celoxide 2000 (Daicel Chemical Industries, Ltd.) are added dropwise to 1 mol of phenyltris (dimethylhydrogensilylethyl) silane using a platinum-based catalyst. Got.

Adhesive aids 3 and 4 (comparative example)
1 mol of Celoxide 2000 (Daicel Chemical Industries) was added dropwise to 1 mol of phenyltris (dimethylhydrogensiloxy) silane using a platinum-based catalyst to obtain an adhesion assistant 3 having the following structural formula.
1 mol of Celoxide 2000 (Daicel Chemical Industries) was added dropwise to 1 mol of methyltris (dimethylhydrogensilylethyl) silane using a platinum-based catalyst to obtain an adhesion assistant 4 having the following structural formula.

68 parts of dimethylpolysiloxane having an average degree of polymerization of 500 blocked at both ends with dimethylvinylsiloxy groups, 32 parts of fumed silica (Aerosil 200, manufactured by Nippon Aerosil Co., Ltd.) having a specific surface area of 200 m ² / g, hexamethyldi After mixing 5 parts of silazane and 2.0 parts of water at room temperature for 30 minutes, the temperature was raised to 150 ° C., stirring was continued for 3 hours, and cooling was performed to obtain a silicone rubber base (1). To 100 parts of this silicone rubber base (1), 40 parts of dimethylpolysiloxane having both ends blocked with dimethylvinylsiloxy groups and an average degree of polymerization of 250 were added, and stirring was continued for 30 minutes. As a crosslinking agent, 2.2 parts of methylhydrogenpolysiloxane having a SiH group at both ends and side chains (polymerization degree 17, SiH group amount 0.0060 mol / g) [SiH group / alkenyl group = 1.5 ( Molar ratio)], 0.05 part of ethynylcyclohexanol was added as a reaction control agent, and stirring was continued for 15 minutes to obtain a silicone rubber base (2). After adding 100 parts of this silicone rubber base (2) and 5 parts of each of the above-mentioned adhesion assistants 1-4 and phenyltris (dimethylhydrogensilylethyl) silane, platinum catalyst (Pt concentration 1%) 0.1 The parts were mixed and degassed to obtain a silicone rubber composition.

  Next, as shown in FIGS. 1A to 1C, a polyethylene terephthalate (PET) film 1 having a width of 25 mm, a length of 50 mm, and a thickness of 0.1 mm is prepared, and the rubber 2 is applied to the tip portion of 20 mm. The sample was dispensed, and further pasted with the same polyethylene terephthalate (PET) film 1 from above. This was press-molded at 120 ° C. for 10 minutes, and then post-cured at 120 ° C. for 1 hour. Next, this test piece 3 was put into a pressure vessel together with pure water, and a hot water resistance test at 90 ° C. for 2000 hours was performed. Thereafter, the PET film part of the test piece was pulled up and down with a testing machine before and after the hot water resistance test, and the fracture surface was observed. The evaluation method was as follows: ◯ when the rubber was broken, indicating that the adhesive strength was strong, ◯, when the rubber was completely removed from either foil, X indicating that the adhesive strength was weak, and △ indicating that the rubber was partially broken. The results are shown in Table 1.

[Example 3, Comparative Example 4]
Adhesive aid 5
1 mol of allyl glycidyl ether was added dropwise to 1 mol of diphenylbis (dimethylhydrogensilylethyl) silane using a platinum-based catalyst to obtain an adhesion assistant 5 having the following structural formula.

Adhesive aid 6 (comparative example)
2 mol of allyl glycidyl ether was added dropwise to 1 mol of diphenylbis (dimethylhydrogensilylethyl) silane using a platinum catalyst to obtain an adhesion assistant 6 having the following structural formula.

  In Example 1, what used the adhesion assistants 5 and 6 instead of the adhesion assistant 1 was produced, and the same test was done. In addition, when press-molding in this test, a press-molded die was used as a press die. At this time, in order to confirm whether the rubber adheres (or peels) to the mold, the state of the fractured surface (rubber fracture or interface peeling) when the rubber is peeled by hand is observed, The ratio of cohesive failure (%) was evaluated as the ratio of the area where rubber was broken to the area. The results are shown in Table 2.

  From the results of Tables 1 and 2, the adhesive silicone rubber composition of the present invention was self-adhesive and adhered firmly to the organic resin.

It is explanatory drawing of the test method of adhesiveness, (A) is a top view of the state which extracted the silicone rubber composition to the front-end | tip part of a polyethylene terephthalate (PET) film, (B) is two sheets of this silicone rubber composition. The side view of the state pinched | interposed with the polyethylene terephthalate (PET) film, (C) is a side view of the state which pulled the polyethylene terephthalate (PET) film up and down after hardening this silicone rubber composition.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Polyethylene terephthalate (PET) film 2 Silicone rubber composition or its hardened | cured material 3 Test piece

Claims (6)

A silicone rubber composition for self-adhesion to an organic resin,
(A) Organopolysiloxane having two or more silicon-bonded alkenyl groups in one molecule: 100 parts by mass
(B) Organohydrogenpolysiloxane having two or more SiH groups in one molecule: 0.5 to 20 parts by mass
(C) Hydrosilylation reaction catalyst: effective amount,
(D) An organosilicon compound containing at least one monovalent or divalent organic group having an aromatic ring in the molecule and at least one organic group represented by the following formulas (1) and (2) : 0.1 to 50 parts by mass -R ¹ -SiR ₂ -H (1)
-R _² -SiR ² -X ⁽²⁾
Wherein R ¹ and R ² are unsubstituted or substituted divalent hydrocarbon groups having 1 to 10 carbon atoms, X is a monovalent organic group containing at least one epoxy group, and R is independent of each other. Represents an unsubstituted or substituted monovalent hydrocarbon group having 1 to 10 carbon atoms.)
An adhesive silicone rubber composition comprising:   The molar ratio of the alkenyl group in component (A) to the SiH group in component (B) is in the range of SiH group / alkenyl group = 0.8 to 3.0. Adhesive silicone rubber composition.   The adhesive silicone rubber composition according to claim 1 or 2, wherein the epoxy group in component (D) is an alicyclic epoxy group.   The adhesive silicone rubber composition according to any one of claims 1 to 3, wherein the component (D) has no siloxane bond in the molecule.   Furthermore, 0.1-50 mass parts of nitrogen-containing organic compounds are contained as (E) component with respect to 100 mass parts of (A) component, Adhesive silicone of any one of Claims 1-4 characterized by the above-mentioned. Rubber composition.   6. The adhesive silicone rubber composition according to claim 5, wherein the nitrogen-containing organic compound is at least one selected from the group consisting of a triazole compound and an imidazole compound.

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