JP2003327833A - Self adhesive organopolysiloxane composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an addition reaction curing type self adhesive organopolysiloxane composition curing at a relatively low temperature, forming an elastic cured material adhering strongly to a metal, plastics, etc., especially a substrate made from a plastic without using a primer. <P>SOLUTION: This self adhesive organopolysiloxane composition contains (A) 100 pts.wt. organopolysiloxane containing in average ≥2 alkenyl groups bonded with silicon atoms in one molecule, (B) an organohydrogenpolysiloxane containing ≥2 hydrogen atoms bonded with silicone atoms in one molecule: by an amount so that the number of hydrogen atoms bonded with the silicon atoms becomes 0.5-5.0 mol per 1 mol of alkenyl group of the organopolysiloxane in the component (A), (C) an effective amount of a hydrosilylation reaction catalyst, (D) 0.1-10 wt.% adhesive property-imparting agent, (E) 0.01-5 pts.wt. boric acid ester compound and (F) 0-3 pts.wt. alcohol. <P>COPYRIGHT: (C)2004,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to curing at a relatively low temperature.
Metal and plastic without primer
Forming an elastic cured product that firmly adheres to substrates such as
Self-adhesive organopolysiloxane composition
Is what you do. [0002] 2. Description of the Related Art An addition reaction in the presence of a platinum-based catalyst causes
A silicon-bonded atom from which a cured product can be obtained.
An organopolysiloxane containing a alkenyl group;
Olga containing hydrogen atom (SiH group) bonded to elemental atom
Addition-curable organo containing nohydrogensiloxane
Polysiloxane compositions are well-known and various
Has been proposed. However, the curing obtained from these compositions
Since all products have poor adhesion to metals, resins, etc.
Potting or coating the electrical circuit
Impregnated coil for motor, flyback for TV set
Lance impregnation, bonding of semiconductor chips to circuit boards, etc.
When used for water, peeling occurs, moisture invades and
There is a disadvantage that the property may be reduced. [0004] Therefore, it has adhesiveness to various substrates.
To obtain an addition-curable organopolysiloxane composition
Investigations have been conducted in the past. For example,
No. 13508 discloses a vinyl-containing diorganopolysiloxane.
E having a sun, epoxy group and / or ester group
100-1 parts by weight of lugano hydrogen polysiloxane,
And organs containing no epoxy or ester groups
Nohydrogenpolysiloxane containing 0 to 99 parts by weight
Curable compositions are described. Also, Japanese Patent Publication No. 59-52
No. 19 discloses an oxirane group, a trialkoxysilyl group
And organopolysiloxane having hydrosilyl group in one molecule
Addition-curable organopolysiloxane containing siloxane
Compositions are described. However, these conventional addition-curable organos
The adhesion performance of the polysiloxane composition is different from that of other resin-based adhesives.
Agents, such as epoxy-based adhesives
Especially when the adhesive holding ability to the plastic substrate is poor
Therefore, further improvement of the adhesive performance is desired.
Was. [0006] SUMMARY OF THE INVENTION The present invention relates to
In view of the problems of addition-curable organopolysiloxane compositions
Only, the plastic was poor in adhesion
A self-curing material that gives an elastic cured product that can adhere well to substrates
Providing a self-adhesive organopolysiloxane composition
Is the subject. [0007] Means for Solving the Problems The present inventors have set forth the above object.
To solve the problem, an addition-curable organopolysiloxane group
By incorporating a borate compound into the product
It has been found that the self-adhesion is significantly improved.
That is, the present invention (A) An alkenyl group bonded to a silicon atom in one molecule
Organopolysiloxane containing an average of 2 or more: 10
0 parts by weight (B) Two hydrogen atoms bonded to a silicon atom in one molecule
Organohydrogenpolysiloxane containing above:
    Hydrogen atom bonded to silicon atom contained in this component
Is the number of organopolysiloxanes in component (A)
0.5 to 5.0 moles per mole of alkenyl group (C) Hydrosilylation reaction catalyst: effective amount (D) Adhesion imparting agent: 0.1 to 10% by weight (E) borate compound: 0.01 to 5 parts by weight,
And (F) Alcohol: 0 to 3 parts by weight Self-adhesive organopolysiloxy, characterized by containing
A sun composition is provided. [0008] DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
You. [Component (A)] The organopolysiloxane of component (A)
The main ingredient of the composition of the above, wherein an average of two or more
Contains a kenyl group. Examples of the alkenyl group include
For example, vinyl group, allyl group, butenyl group, pentenyl group,
When the number of carbon atoms of a hexenyl group, a heptenyl group, etc.
Usually, 2 to 8, preferably about 2 to 4 are mentioned,
Particularly, a vinyl group is preferable. (A) In the component
The alkenyl group bonded to the silicon atom in, for example,
Included as molecular chain end groups and / or molecular chain side groups
You. Silicon other than alkenyl group in component (A)
Examples of the organic group bonded to the atom include an alkyl group,
Particularly, methyl group, ethyl group, propyl group, butyl group,
Methyl group, hexyl group, cyclohexyl group, heptyl group
An alkyl group having 1 to 10 carbon atoms, such as an aryl group,
Phenyl, tolyl, xylyl, naphthyl, etc.
An aryl group having 6 to 14 carbon atoms; an aralkyl group,
Benzyl and phenethyl groups having 7 to 14 carbon atoms
Aralkyl groups; halogenated alkyl groups, especially
Tyl group, 3-chloropropyl group, 3,3,3-trifluoropropyl
Alkyl groups having 1 to 3 carbon atoms such as
And unsubstituted or halogen-substituted monovalent hydrocarbon groups.
And particularly preferably a methyl group or a phenyl group.
No. As the molecular structure of the component (A),
Is, for example, linear, partially branched linear, cyclic,
The main chain is basically diorganoshiro
It consists of repeating xan units, and both ends of the molecular chain are trio
Linear diorganopoxy blocked with a luganosiloxy group
It is preferably siloxane. The viscosity of the component (A) at 25 ° C.
The physical properties of silicone rubber
100-500,000 because of good workability
 mPas is preferable, and particularly, 300 to 10 mPas.
It is preferably within the range of 0,000 mPa · s. [0012] Such organopolysilo of the component (A)
As the xane, for example, trimethylsilo at both ends of the molecular chain
Xyl-blocked dimethylsiloxane / methylvinylsiloxane
Copolymers, trimethylsiloxy group blocking
Tylvinylpolysiloxane, molecular chain
Roxy-blocked dimethylsiloxane / methylvinylsiloxy
San-methylphenylsiloxane copolymer, both ends of molecular chain
Dimethylvinylsiloxy-endblocked dimethylpolysiloxa
Dimethylvinylsiloxy group-blocked methyl
Vinyl polysiloxane, molecular chain
Roxy-blocked dimethylsiloxane / methylvinylsiloxy
Sun copolymer, both ends of molecular chain dimethylvinylsiloxy group
Blocked dimethyl siloxane, methyl vinyl siloxane, methyl
Luphenylsiloxane copolymer, molecular chain terminal trivinyl
Lucyloxy group-blocked dimethylpolysiloxane, formula: R¹ _ThreeSi
O_0.5(R¹Is as described below)
Position and formula: R¹ _TwoR^TwoSiO_0.5(R^TwoIs as described below)
A siloxane unit represented by the formula: R¹ _TwoUnits represented by SiO
And a small amount of formula: SiO_TwoConsisting of a siloxane unit represented by
Organopolysiloxane copolymer, formula: R¹ _ThreeSiO_0.5so
A siloxane unit represented by the formula: R¹ _TwoR^TwoSiO_0.5Indicated by
Siloxane unit and formula: SiO_TwoThe siloxane unit represented by
Organopolysiloxane copolymer having the formula: R¹ _Two
R^TwoSiO_0.5And a siloxane unit represented by the formula: R¹ _TwoWith SiO
The siloxane unit shown and a small amount of formula: SiO_TwoIndicated by
Organopolysiloxane copolymer composed of siloxane units
Body, Formula: R¹R^TwoSiloxane units represented by SiO and a small amount
Formula: R¹SiO_1.5A siloxane unit represented by or a formula:
R^TwoSiO_1.5An organo-siloxane unit represented by
A polysiloxane copolymer is exemplified. These are single types
It can be used alone or in combination of two or more. R in the above formula¹Is unsubstituted except alkenyl group
Or a substituted monovalent hydrocarbon group, for example, methyl
Group, ethyl group, propyl group, butyl group, pentyl group,
Alkyl groups such as xyl groups and heptyl groups; phenyl groups,
Aryl groups such as a luyl group, a xylyl group and a naphthyl group;
Aralkyl groups such as jyl group and phenethyl group; chloromethyl
Group, 3-chloropropyl group, 3,3,3-trifluoropropyl group
And the like. Also, in the above equation
R^TwoIs an alkenyl group, for example, a vinyl group,
Group, butenyl group, pentenyl group, hexenyl group,
And a thenyl group. [Component (B)] Organohydride of component (B)
Rogen polysiloxane reacts with component (A) and crosslinks
Acts as an agent, and its molecular structure is particularly limited
Not conventionally produced, for example, linear, annular, branched
Various types, such as shape, three-dimensional net structure (resin-like)
However, two or more, preferably three or more in one molecule
A hydrogen atom bonded to a silicon atom (a hydride represented by SiH
Rosylyl group), usually 3 to 500,
Preferably about 3 to 200, more preferably about 3 to 100
It is desirable to have a SiH group. This organohide
The following average composition formula
The one shown in (1) is used. R^Three _aH_bSiO_{(4-ab) / 2}        (1) In the above formula (1), R^ThreeIs the same as
Usually 1 to 14 carbon atoms, preferably 1 to 10 carbon atoms
Unsubstituted or substituted monovalent carbon bonded to a silicon atom
A hydrogen group;^ThreeUnsubstituted or substituted 1
Examples of the valent hydrocarbon group include a methyl group, an ethyl group,
Propyl, isopropyl, butyl, isobutyl
Group, tert-butyl group, pentyl group, neopentyl group,
Xyl group, cyclohexyl group, octyl group, nonyl group,
Alkyl group such as decyl group; phenyl group, tolyl group, xy
Aryl groups such as a ruyl group and a naphthyl group; benzyl group,
Aralkyl groups such as nilethyl group and phenylpropyl group
Or some or all of the waterline atoms in these groups
Bromine, those substituted with halogen atoms such as chlorine, for example,
Chloromethyl group, 3-chloropropyl group, bromoethyl
And 3,3,3-trifluoropropyl group. R^Three
Preferred as unsubstituted or substituted monovalent hydrocarbon groups are
An alkyl group or an aryl group, more preferably
A tyl group and a phenyl group. A is 0.7 to 2.1, b
Is 0.001 to 1.0 and a + b satisfies 0.8 to 3.0
A is 1.0 to 2.0, and b is 0.01 to 1.
0, a + b is 1.5 to 2.5. 2 or more, preferably 3 or more in one molecule
The contained SiH group is located at the end of the molecular chain or in the middle of the molecular chain.
Or both.
It may be. In addition, this organohydrogenpo
The molecular structure of siloxane is linear, cyclic, branched, or tertiary.
Any of the former rope-shaped trees may be used.
The number of elementary atoms (degree of polymerization) is usually 2 to 1,000, preferably
3 to 300, more preferably 4 to 150
The viscosity at 25 ° C. is usually 0.1 to 5,000 mPas,
Preferably, 0.5 to 1,000 mPas, more preferably 5 to
A liquid at room temperature (25 ° C) of about 500 mPa · s is used.
It is. The component (B) is obtained by a known production method.
It is possible. Common manufacturing methods include
For example, 1,3,5,7-tetramethyl-1,3,5,7-tetrahydro
Clotetrasiloxane (optionally, the cyclotet
Lasiloxane and octamethylcyclotetrasiloxane
Mixture) and hexamethyldisiloxane, 1,3-dihydride
B-1,1,3,3-tetramethyldisiloxane
Or octamethylsilane
Clotetrasiloxane and 1,3-dihydro-1,1,3,3-tetra
Lamethyldisiloxane and sulfuric acid, trifluoromethane
-10 in the presence of a catalyst such as sulfonic acid and methanesulfonic acid
Easily by equilibrating at a temperature of about + 40 ° C
Obtainable. The organohydro of component (B)
Genpolysiloxanes include trimethyl
Lucyloxy-blocked methyl hydrogen polysiloxa
Trimethylsiloxy group at both ends of molecular chain
Loxane / methyl hydrogen siloxane copolymer,
Trimethylsiloxy group-blocked dimethylsiloxy at both ends of molecular chain
San methyl hydrogen siloxane methyl phenyl
Siloxane copolymer, dimethylhydrogen at both ends of molecular chain
Ensiloxy group-blocked dimethylpolysiloxane, both molecular chains
Terminal dimethyl hydrogensiloxy group-blocked dimethyl ester
Risiloxane-methylhydrogensiloxane copolymerization
Dimethyl hydrogensiloxy group sealing at both ends of the body and molecular chain
Chain dimethylsiloxane / methylphenylsiloxane
Dimethylhydrodienesiloxy group
Blocked methyl phenyl polysiloxane, formula: R¹ _ThreeSiO_0.5
And a siloxane unit represented by the formula: R¹ _TwoHSiO_0.5Indicated by
Siloxane units and a small amount of formula: SiO_TwoShiro indicated by
An organopolysiloxane copolymer comprising a xanthic unit,
Formula: R¹ _TwoHSiO_0.5And a small amount of siloxane units
Formula: SiO_TwoAn organo-siloxane unit represented by
Polysiloxane copolymer, formula: R¹HSiO
Loxane unit and a small amount of formula: R¹SiO_1.5Shiroki indicated by
Sun unit or formula: HSiO_1.5The siloxane represented by
And organopolysiloxane copolymers comprising
It is. These may be used alone or in combination of two or more.
Can be used. R in the above formula¹Is other than an alkenyl group
Is a monovalent hydrocarbon group defined for component (A) above.
The same groups as described above are exemplified. The amount of the component (B) is determined according to the amount of silica contained in the component (A).
(B) per mole of alkenyl group bonded to a hydrogen atom
Hydrogen atoms bonded to silicon atoms in the
, Preferably in the range of 1 to 4 moles.
If the amount of the component (B) is too small, the composition is sufficiently cured.
Silicone may not be obtained, conversely if too much silicone is obtained
The heat resistance of rubber may be extremely poor. [Component (C)] Sidrosilylation of component (C)
The reaction catalyst is an alkenyl group in the component (A),
(B) promotes the addition reaction with the SiH group in the component
Any catalyst may be used. For example, chloride
Platinic acid, alcohol-modified chloroplatinic acid, chloroplatinic acid and ole
Fins, vinylsiloxane or acetylene compounds
Platinum-based catalysts such as coordination compounds with
Palladium-based catalysts such as
Logistics such as lolotris (triphenylphosphine) rhodium
Although a platinum-based catalyst is used, a platinum-based compound is particularly preferable.
Things. Component (C) is used in an effective amount.
Although not particularly limited, generally, component (A) and component (B)
With respect to the total amount of the catalyst metal element,
0.1 to 1,000 ppm, preferably 1 to 500 ppm
And more preferably used in the range of 10 to 100 ppm.
You. If the amount is too small, the addition reaction becomes extremely slow.
Or no longer cures, conversely it is obtained if there is too much
The heat resistance of the silicone rubber decreases. [Component (D)] Adhesive imparting agent of component (D)
Is a component that imparts self-adhesiveness to the composition of the present invention,
Silicon compounds containing functional groups that provide adhesion are preferred.
New Specific examples include vinyl bonded to silicon atoms.
An alkenyl group such as an aryl or allyl group, a carbon atom
An epoxy group bonded to a silicon atom through (for example, γ
-Glycidoxypropyl group, 3,4-epoxycyclohexyl
Group), (meth) acryloxy group (for example, γ-
Cryoxypropyl group, γ-methacryloxypropyl group
Etc.), alkoxysilyl groups (for example,
Or alkylene, which may contain one or two urethane structures.
Trimethoxysilyl bonded to a silicon atom through a
And alkoxysilyl groups such as triethoxysilyl group.
Silane derivatives having a SiH group and silo
Xan oligomer (for example, about 2 to 20 silicon atoms)
Linear siloxane oligomers of 4 to 8 silicon atoms
Siloxane oligo having about one cyclic siloxane structure
) And triallyl isocyanurate alkoxy
Examples thereof include a silyl modified product or a derivative thereof.
As the component (D), particularly, the above-mentioned functional group is contained in one molecule.
Those containing more than one kind are preferred. Such a functional group
Specific examples of the silicon compound contained, for example,
Can be mentioned. [0023] Embedded image (Hereinafter referred to as "adhesiveness imparting agent (a)") [0024] Embedded image (Hereinafter referred to as "adhesiveness imparting agent (b)") [0025] Embedded image (Hereinafter referred to as "adhesiveness imparting agent (c)") [0026] Embedded image [0027] Embedded image[0028] Embedded image [0029] Embedded image The amount of the component (D) is good for the above composition.
It is sufficient that the amount is sufficient to impart sufficient adhesiveness. (A)
0.1 to 10 parts by weight, preferably 100 parts by weight of the components
It is in the range of 0.5 to 5 parts by weight. Good if the amount is too small
Good adhesion cannot be provided. [Component (E)] Boric ester of component (E)
Compound acts as a condensation promoter to improve adhesion
(That is, the borate compound of the component (E) is
Hydrolysis of functional groups, such as alkoxysilyl groups
Has the effect of promoting ring opening of epoxy and epoxy groups, etc.
Between the component (D) and the functional group of the plastic substrate
Action is enhanced and the adhesion is improved).
Include, for example, trimethyl borate: B (OCH_Three)_Three, Ho
Triethyl acid: B (OC_TwoH_Five)_Three, Tripropyl borate: B
(OC_ThreeH ₇)_Three, Trimethylene borate: [0032] Embedded image And other examples of compounds such as [CH_ThreeO (C_TwoH_FourO)_Three]
_ThreeB, (C₆H_FiveO)_ThreeB, [(CH_Three)_ThreeSiO]_ThreeB, [0033] Embedded image And the like. The amount of the component (E) is 100 parts by weight of the component (A).
0.01 to 5 parts by weight, preferably 0.1 to 2 parts by weight
Is in the range of If the amount is too small, good contact
It is not possible to impart adhesion, and conversely, it is obtained if there is too much
The heat resistance of the silicone rubber decreases. [Component (F)] The alcohol of the component (F) is
When used in combination with component (E), it forms a complex with component (E).
Thus, the above-mentioned effect of enhancing the cocatalytic activity of the component (E) is
Optional components that are considered to have
Minutes. The alcohol has 1 to 12 carbon atoms.
Monohydric and polyhydric alcohols (eg, dihydric or trihydric alcohols)
Alcohol), preferably methanol, d.
Tanol, propanol, isopropanol, butanol
, Lauryl alcohol, octyl alcohol, etc.
Examples include alcohols having an alkyl group having 1 to 12 atoms.
I can do it. The amount of the component (F) is usually 1
It is preferably 0 to 3 parts by weight based on 00 parts by weight.
If this amount is too large, it reacts with the cross-linking agent component and reacts dehydrogenated.
Response may occur. [Other components] In the present composition,
As an optional component other than the components (A) to (F),
It is a compound that has a curing inhibitory effect on the reaction catalyst
All known control agents can be used.
You. Such compounds include triphenyl phosphites.
Phosphorus-containing compounds, such as tributylamine and tetrame
Nitrogen such as tylethylenediamine and benzotriazole
-Containing compound, sulfur-containing compound, 1-ethynyl-1-hexano
Acetylene-based compounds such as
Compounds containing two or more alkenyl groups such as
Dropperoxy compounds and maleic acid derivatives are examples
It is. The degree of cure retarding effect of the control compound is controlled
It depends greatly on the chemical structure of the drug compound. Therefore,
The amount of control compound added depends on the control compound used.
Should be adjusted to the optimal amount, but generally
If the amount is too small, long-term storage stability at room temperature will be obtained.
On the contrary, if the amount is too large, the curing is rather inhibited. Further, as other optional components, for example,
For example, fumed silica, crystalline silica, precipitated silica,
Hollow filler, silsesquioxane, hyumudo dioxide
Titanium, magnesium oxide, zinc oxide, iron oxide, hydroxide
Aluminum, magnesium carbonate, calcium carbonate, charcoal
Zinc acid, layered mica, carbon black, diatomaceous earth, moth
Mineral fillers such as lath fibers, and these fillers
Organoalkoxysilane compounds, organochlorosila
Compounds, organosilazane compounds, low molecular weight siloxanes
With surface treatment with organosilicon compounds such as
The agent is fisted. As a filler, silicone rubber
Powder, silicone resin powder, etc.
You. Furthermore, this composition impairs the object of the present invention.
Unless otherwise specified, other optional components
For example, one silicon-bonded hydrogen atom in one molecule or
Alkenyl-containing organopolysiloxane, silicon
Containing no hydrogen atom or alkenyl group
Luganopolysiloxane, organic solvent, creep hard nin
Antioxidants, heat resistance imparting agents, flame retardant imparting agents, plasticizers,
It is not possible to mix solvating agents, pigments, dyes, fungicides, etc.
Optional. The self-adhesive organopolysilo of the present invention
Xan compositions cure at relatively low temperatures and use primers.
Strongly adheres to base materials such as metals and plastics without using
An elastic cured product to be bonded can be formed. Accordingly
Sealing, potting and coating materials
What if, especially if the coating material for airbags
It is useful as a sealing material. [0041] EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples.
Although described, the present invention is not limited to the following examples.
Absent. In the following, “parts” means “parts by weight”
I do. The viscosity is a value measured at 25 ° C. [0042]Example 1 (A) molecular chain terminal is blocked with a dimethylvinylsiloxy group
100 parts of dimethylpolysiloxane having a viscosity of 10 Pa
(B) Trimethylsiloxy at both ends of the molecular chain having a viscosity of 5 mPa · s
Methyl hydrogen polysiloxane (silicon)
1.5 parts by weight of hydrogen atoms bonded to atoms = 1.45% by weight
(SiH group in component (B) / vinyl group in component (A) (molar ratio)
= 4.0), (C) chloroplatinic acid and divinyltetramethyldisilo
Complex of xan (the components (A) and (B)
30 ppm, (D) 3 parts of (A) adhesion-imparting agent,
(E) 0.5 parts of triethyl borate, (F) n-octyl alcohol
0.2 parts, 1-ethynyl-1-cyclohexanol 0.15
Part, triallyl isocyanurate 0.5 part, hexamethyl
Specific surface area treated with disilazane 120m^Two/ g hydrophobicity
Composition A was prepared by mixing 10 parts of Rica. This composition A was applied to an aluminum plate, SPS
(Syndiotactic polystyrene) 2 sheets each
Pour 2mm thick between plates and heat treat at 100 ℃ for 2 hours
And cured, returned to room temperature and subjected to a shear adhesion test
Roller, shear strength 0.6MPa on aluminum plate, cohesive fracture
Breakage rate 100%, SPS plate 0.4MPa, cohesive failure rate
The adhesion was very good at 85%. [0044]Example 2 1.5 parts of component (B) 0.73 parts (SiH in component (B)
Group / vinyl group (molar ratio) in component (A) = 2.0) and component (C)
Compounding amount (Total of components (A) and (B) as platinum metal weight)
30 ppm to 15 ppm) and (D) component with adhesive
Component (E) is added to adhesiveness-imparting agent (b) in place of
Tripropyl borate in place of triethyl acid
0.15 parts of Nyl-1-cyclohexanol 0.05 parts
And (F) n-octyl alcohol and
Except for not incorporating triallyl isocyanurate,
Composition B was prepared in the same manner as in Example 1. This composition B was coated on an aluminum plate, PPS
(Polyphenylene sulfide)
Pour it in 2mm thickness and heat treat it at 100 ℃ for 2 hours.
When the shear adhesion test was performed after returning to room temperature,
The aluminum plate has a shear adhesive strength of 0.9 MPa and a cohesive failure rate of 10
0%, and 0.5MPa for PPS plate, 80% cohesive failure rate
Very good adhesion. [0046]Example 3 Adhesive instead of the adhesion-providing component (b) used in Example 2
Same as Example 2 except that 0.5 part of the additive (c) was used.
Thus, composition C was prepared. This composition C is
Plate and PC (polycarbonate) plate
Pour 2mm thick between plates and heat treat at 100 ℃ for 2 hours
And then returned to room temperature to perform a shear adhesion test.
Rho, aluminum plate has shear adhesive strength of 0.8MPa, cohesive failure
Rate 100%, PC board 0.6MPa, cohesive failure rate 80
% And very well adhered. [0047]Example 4 (A1) the molecular chain end is blocked with a dimethylvinylsiloxy group
80 parts of dimethylpolysiloxane having a viscosity of 10 Pa
(A2) The end of the molecular chain is blocked with a trimethylsiloxy group,
Contains 5 mol% of nylmethylsiloxy units and has a viscosity of 0.7
 4 parts Pa · s dimethylpolysiloxane, (B1) viscosity 5 mPa
・ Molecule at both ends of trimethylsiloxy group, which is s
Hydrogenpolysiloxane (silicon-bonded hydrogen source
1.0 part, (B2) viscosity is 12 mPa · s
Of silicon-bonded hydrogen atoms at the molecular chain ends and side positions
Dimethylpolysiloxane having silicon atoms (silicon-bonded water
2.2 parts (elements (B1) and (B2))
SiH group in vinyl / vinyl group in (A1) and (A2) components (mol
Ratio) = 3.9), (C) chloroplatinic acid and divinyltetramethyldi
Siloxane complex ((A1), (A2),
30 ppm (based on the total amount of components (B1) and (B2)), (D)
1.5 parts of a tackifier (b), (E) tripropyl borate 1.0 part,
(F) Ethanol 0.2 part, 1-ethynyl-1-cyclohexano
0.05 parts, treated with hexamethyldisilazane
Surface area 120m^Two/ g hydrophobic silica 17 parts
Preparation D was prepared. The composition D was treated with nylon 66 for airbag.
(420 denier) The thickness becomes 0.5mm between two fabrics
490.4kPa (5kgf / cm^Two) Pressure at pressure
And cured at 170 ° C. for 1 minute. 2.5c width after curing
m × 10cm length and peel test
The collection and destruction rate was 100%. [0049]Comparative Example 1 (E) triethyl borate and (F) n-octyl alcohol
Was used in the same manner as in Example 1 except that
Product E was prepared. This composition E was applied to an aluminum plate, S
Each of PS (syndiotactic polystyrene) plate
Pour 2mm thick between two plates and heat at 100 ℃ for 2 hours
Treat and cure, return to room temperature and perform shear adhesion test
As a result, the shear strength of the aluminum plate was 0.6 MPa,
Adhesion was 100%, but 0.1M on SPS board
Pa and a cohesive failure rate of 0% were not adhered. [0050]Comparative Example 2 (E) Except not using tripropyl borate,
Composition F was prepared in the same manner as in Example 2. This composition
F between aluminum plate and PPS plate
Pour 2mm thick and heat cure at 100 ℃ for 2 hours
After returning to room temperature and performing a shear adhesion test,
Shear adhesive strength 0.7MPa, cohesive failure rate 100
%, But 0.1MPa on PPS plate, cohesive failure
The rate was 0%, indicating no adhesion. [0051]Comparative Example 3 (E) Except not using tripropyl borate,
Composition G was prepared in the same manner as in Example 3. This composition
G between aluminum plate and PC plate
Pour in 2mm thickness and heat cure at 100 ℃ for 2 hours
After returning to room temperature and performing a shear adhesion test,
0.8MPa shear adhesion, 100% cohesive failure rate for minium plate
0.1MPa, cohesive failure rate 0
% Did not adhere. [0052]Comparative Example 4 Do not use (E) tripropyl borate and (F) ethanol.
Composition H was prepared in the same manner as in Example 4 except that
Made. This composition H was subjected to a peel test in the same manner as in Example 4.
The tests showed that nylon 66 fabric for airbags
Did not adhere. [0053] According to the present invention, the addition-curable self-adhesive adhesive according to the present invention is provided.
The luganopolysiloxane composition is a borate compound
It is characterized by containing
Even without using an immersion metal, plastic, etc., especially
An elastic cured product that firmly adheres to plastic substrates
It has an excellent effect that it can be
You.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C09J 11/00 C09J 11/00 183/05 183/05 183/07 183/07 (72) Inventor Takashi Akita 1-10 Hitomi, Matsuida-cho, Usui-gun, Gunma Prefecture Shin-Etsu Chemical Co., Ltd. Silicone Electronic Materials Technology Laboratory (72) Inventor Takeshi Miyao 1-10 Hitomi, Matsuida-machi, Usui-gun, Gunma Prefecture Shin-Etsu Chemical Co., Ltd. Silicone electronic materials F term in the Technical Research Institute (reference) 4J002 CP04X CP12W CP13W CP14W DA116 DE196 EC039 EC069 EX037 EX067 EX077 EY018 GJ01 4J040 EK041 EK081 EK091 HA096 HB08 HB10 HB11 HD30 HD35 HD38 HD41 KA14 KA26 LA06 MA10

Claims (1)

Claims: 1. An organopolysiloxane containing (A) an average of two or more silicon-bonded alkenyl groups per molecule: 100 parts by weight (B) a hydrogen atom bonded to a silicon atom Organohydrogenpolysiloxane containing two or more in one molecule:
The amount of the number of hydrogen atoms bonded to silicon atoms contained in this component is 0.5 to 5.0 moles per mole of the alkenyl group of the organopolysiloxane in the component (A). (C) Hydrosilylation reaction catalyst: Self-adhesiveness characterized by containing an effective amount (D) an adhesion-imparting agent: 0.1 to 10% by weight, (E) a borate compound: 0.01 to 5 parts by weight, and (F) an alcohol: 0 to 3 parts by weight. Organopolysiloxane composition.