JPH06340819A - Moisture-curable composition - Google Patents

Abstract

PURPOSE:To obtain a room-temp.-curable composition which gives a cured composition excellent in breaking strength, etc., is useful as an elastic material having excellent adherence to a substrate, and has excellent storage stability by mixing a specific polymer with a specific compound in a given proportion. CONSTITUTION:The room-temp.-curable composition comprises 100 pts.wt. polymer containing one or more hydrolyzable silicon groups per molecule and preferably having a poly(oxyalkylene) chain as the main chain and 0.1-100 pts.wt. compound which has a group generating in the molecule an active group selected from OH, SH, amino, amide, and COOH upon hydrolysis and has per molecule at least one hydrolyzable silicon group represented by the formula [wherein X is OH, a halogen, an alkoxy, an alkenoxy, an acyloxy, amide, aminooxy, or a ketoximate; R and Q each is a 1-20C (substituted) monovalent hydrocarbon group; T is a 1-20C (substituted) divalent hydrocarbon group; a is 2 or 3; b is 0-2; and m is 0-18].

Description

Detailed Description of the Invention

[0001]

The present invention relates to a sealing material, a waterproofing agent,
The present invention relates to a curable composition useful as an adhesive, a coating material and the like.

[0002]

2. Description of the Related Art Some examples of polymers having a hydrolyzable silicon group capable of forming a siloxane bond by hydrolysis and having a high molecular weight or crosslinking are known (for example, JP-A-3-47820). JP-A-3-72
No. 027, Japanese Patent Laid-Open No. 3-79627, Japanese Patent Publication No. 4
6-30711, JP-B-45-36319, JP-B-46-17553).

These compounds are used in elastic sealants, elastic adhesives, etc. because they cure at room temperature due to moisture or the like to give an elastic body. When this polymer is used, it may be used as a composition with a silane coupling agent having an active group for the purpose of improving the adhesion of the cured polymer to the adherend (JP-A-57-182350).
Issue).

[0004]

However, in these compositions, the addition of the silane coupling agent tends to increase the modulus of the polymer cured product and impair the elasticity, and the active group in the silane coupling agent is one type. However, its use is limited because of the reason that it impairs the storage stability of the composition.

[0005]

As a result of intensive studies to solve the above-mentioned problems, the present inventors have found a composition having improved tensile properties of a cured product and excellent storage stability. .

The present invention is, therefore, at least 1 in the molecule.
100 parts by weight of a polymer containing one hydrolyzable silicon group,
And a group that produces an active group selected from a hydroxyl group, a mercapto group, an amino group, an amide group, and a carboxyl group in the molecule by hydrolysis, and at least one hydrolyzable silicon group represented by the following structural formula A. Compounds containing 0.1-1
It is a curable composition consisting of 100 parts by weight.

R _3-a -SiX _a (OSiX _b Q _2-b ) _m -T -... A In the formula, X is a hydroxyl group, a halogen atom, an alkoxy group, an alkenoxy group, an acyloxy group, an amide group or an aminooxy group. And a group selected from a ketoximate group, R and Q are substituted or unsubstituted monovalent hydrocarbon groups having 1 to 20 carbon atoms,
T is a substituted or unsubstituted divalent hydrocarbon group having 1 to 20 carbon atoms, a is 2 or 3, b is 0, 1 or 2, m is 0 to 1.
An integer of 8. Here, R and Q may be different or the same.

In the following description of the present specification, a "group which forms an active group selected from a hydroxyl group, a mercapto group, an amino group, an amide group and a carboxyl group in a molecule by hydrolysis" is called an "active group forming group". .

The main chain of the polymer containing at least one hydrolyzable silicon group in the molecule of the present invention is polyoxyalkylene, or acrylic acid ester, methacrylic acid ester acrylonitrile, styrene, butadiene, vinyl ester, halogen. It is preferably composed of a polymer formed by polymerizing one or more selected from vinyl chloride, fluorinated olefin and vinyl ether.

It is particularly preferred that the main chain consists essentially of polyoxyalkylene. In this case, the molecular weight of the base polyoxyalkylene is not particularly limited, but is preferably 3,000 to 50,000, particularly preferably 3,000.
Is ~ 25,000.

Examples of the polymer having at least one hydrolyzable silicon group in the molecule and having a main chain consisting essentially of polyoxyalkylene are disclosed in, for example, JP-A-3-47820 and JP-A-3-72027, Kaihei 3-7962
No. 7, JP-B-63-25001, JP-B-46
-30711, Japanese Patent Publication No. 45-36319,
A known polymer proposed in Japanese Examined Patent Publication No. 46-17553 can be used.

The main chain is formed by polymerizing one or more selected from acrylic acid ester, methacrylic acid ester, acrylonitrile, styrene, butadiene, vinyl ester, vinyl halide, fluorinated olefin and vinyl ether. When it is composed of a polymer, a polymer obtained by copolymerizing these monomers with a monomer containing a hydrolyzable silicon group is preferable. Particularly, a polymer which is a copolymer of a fluorinated olefin such as chlorotrifluoroethylene or tetrafluoroethylene is preferable.

Examples of the monomer containing a hydrolyzable silicon group include alkenes having a hydrolyzable silicon group such as trimethoxyvinylsilane and trimethoxyallylsilane.
-Acrylates and methacrylates such as trimethoxysilylpropyl acrylate and 4-trimethoxysilylbutyl methacrylate, vinyl ethers such as 4-trimethoxysilylbutyl vinyl ether and the like can be used.

The polymerization of the monomer can be carried out by using a solvent. In this case, after the polymerization, a method of removing the solvent, after the polymerization,
There is a method of substituting the solvent with polyoxyalkylene. It is also possible to polymerize the above-mentioned monomer in, for example, polyoxyalkylene having a hydrolyzable silicon group by utilizing a so-called polymer polyol technique. In this case, a solvent is not required during the polymerization, which is preferable.

A compound containing an active group-forming group and at least one hydrolyzable silicon group represented by Structural Formula A will be described. The active group generating group is generated by reacting an active group selected from a hydroxyl group, a mercapto group, an amino group, an amide group and a carboxyl group with a hydrolyzable protecting group such as a trialkylsilyl group or a carbonyl group. be able to. In these compounds, for example, an active group of a compound having an active group is first reacted with a protective group to form an active group-forming group, and then a hydrolyzable silicon group represented by Structural Formula A is introduced into the compound. It is synthesized by Also,
The active group-forming group and the hydrolyzable silicon group represented by Structural Formula A can be formed in the reverse order. Some examples of synthetic methods include, but are not limited to, the following methods.

(A) hydroxyl group, mercapto group, amino group,
A compound containing a double bond with an amide group or a carboxyl group in the presence of an alkali, trimethylchlorosilane, t-butyldimethylchlorosilane, triethylchlorosilane, triisopropylchlorosilane, triphenylchlorosilane, ClCH ₂ (CH ₃ ) ₂ SiCl, trimethyliodosilane, etc. To react with the halogenosilanes of (1) to trialkylsilylate the above-mentioned active group to form an active group-forming group.
Then, a hydrolyzable silicon group is introduced into the double bond by a hydrosilylation reaction in the presence of a catalyst. A similar compound can also be produced by a method of reacting a compound having a trialkylsilylated active group and a reactive functional group with a compound having a group capable of reacting with the reactive functional group and a hydrolyzable silicon group.

(B) After reacting an amine having a double bond with a carbonyl compound to form a ketimine, a hydrolyzable silicon group is introduced into the double bond by a hydrosilylation reaction in the presence of a catalyst. Alternatively, a compound having a ketimine and a reactive functional group is reacted with a compound having a group capable of reacting with the reactive functional group and a hydrolyzable silicon group.

(C) A compound having a hydrolyzable silicon group and an active group is reacted with an alkoxysilane, silazane or the like by an exchange reaction or an addition reaction to introduce a trialkylsilyl group into the active group.

The hydrolyzable silicon group represented by the structural formula A includes, for example, alkyldialkoxysilanes such as methyldimethoxysilane and methyldiethoxysilane, trialkoxysilanes such as trimethoxysilane and triethoxysilane. It can be introduced by a hydrosilylation reaction. When a hydrolyzable silicon group is introduced by a reaction other than the hydrosilylation reaction, hydrogen atoms of these alkyldialkoxysilanes and trialkoxysilanes are replaced with reactive functional groups such as epoxy groups and amino groups. The compound can be used.

The curable composition of the present invention itself undergoes hydrolysis and polymerizing reaction due to moisture to give a cured product or a polymer useful as a waterproofing agent or an adhesive. It can be used as a composition containing an agent, a plasticizer, an additive and the like.

As the filler, fumed silica, precipitated silica, filler such as silicic anhydride, hydrous silicic acid and carbon black, calcium carbonate, magnesium carbonate,
Such as diatomaceous earth, calcined clay, clay, talc, titanium oxide, bentonite, organic bentonite, ferric oxide, zinc oxide, activated zinc white, hydrogenated castor oil and filler such as shirasu balloon, asbestos, glass fiber and filament. Any fibrous filler can be used.

As the plasticizer, dioctyl phthalate,
Phthalates such as dibutyl phthalate and butyl benzyl phthalate, dioctyl adipate, isodecyl succinate, dibutyl sebacate, aliphatic carboxylic acid esters such as butyl oleate, glycol esters such as pentaerythritol ester, trioctyl phosphate, phosphorus Phosphates such as tricresyl acid, epoxidized soybean oil, epoxy plasticizers such as benzyl epoxystearate, chlorinated paraffin, etc. can be used alone or in a mixture of two or more kinds.

As additives, adhesion promoters such as phenol resins and epoxy resins, pigments, various antiaging agents, ultraviolet absorbers and the like can be used.

As one of the additives, a known silane coupling agent may be used as long as the physical properties of the composition are not impaired.

[0025]

EXAMPLES Prior to the examples, the synthesis examples of the polymers containing at least one hydrolyzable silicon group in the molecule used in the synthesis examples 1 to 7 and the structural formula A in synthesis examples 8 to 13 were used. An example of the synthesis of the compound containing the hydrolyzable silicon group and the active group-forming group is shown. Further, Comparative Synthesis Example 1 shows a synthesis example of Compound L corresponding to Compound H synthesized in Synthesis Example 8 and having no hydrolyzable silicon group represented by Structural Formula A.

[Synthesis Example 1] Propylene oxide was polymerized using glycerin as an initiator and a zinc hexacyanocobaltate catalyst to obtain polyoxypropylene triol having an average molecular weight of 20,000. This was reacted with allyl chloride in the presence of alkali to convert the terminal hydroxyl group into an allyl group. Then, the obtained terminal allyl group-containing polyoxypropylene was reacted with methyldimethoxysilane in the presence of a platinum catalyst to convert the allyl group into a methyldimethoxysilyl group to obtain a polymer in which 82% of the terminals were silylated (polymer A).

[Synthesis Example 2] Propylene oxide was polymerized using diethylene glycol as an initiator and a zinc hexacyanocobaltate catalyst to give an average molecular weight of 10,000.
Of polyoxypropylene diol was obtained. This was reacted with allyl chloride in the presence of alkali to convert the terminal hydroxyl group into an allyl group. Then, the obtained terminal allyl group-containing polyoxypropylene was reacted with methyldimethoxysilane in the presence of a platinum catalyst to convert the allyl group into a methyldimethoxysilyl group to obtain a polymer in which 75% of the terminals were silylated (polymer B).

[Synthesis Example 3] Except that the reaction amount of methyldimethoxysilane was lowered, the same reaction as in Synthesis Example 2 was carried out to obtain a polymer in which 50% of the terminals were silylated (Polymer C).

[Synthesis Example 4] Propylene oxide was polymerized using diethylene glycol as an initiator and a zinc hexacyanocobaltate catalyst to obtain polyoxypropylene diol having an average molecular weight of 6,500. This was reacted with allyl chloride in the presence of alkali to convert the terminal hydroxyl group into an allyl group. Then, the obtained terminal allyl group-containing polyoxypropylene was reacted with methyldimethoxysilane in the presence of a platinum catalyst to convert the allyl group into a methyldimethoxysilyl group to obtain a polymer in which 78% of the terminals were silylated (polymer D).

[Synthesis Example 5] Polymer B (50 parts by weight, hereinafter the same) was placed in a glass four-necked flask equipped with a stirrer.
It was kept at 110 ° C. After a mixture of 50 parts of Polymer B, 0.6 part of azobisisobutyronitrile, 24 parts of glycidyl methacrylate, and 2 parts of γ-methacryloxypropyltrimethoxysilane was added dropwise to this product over 2 hours with stirring under a nitrogen atmosphere. , And stirred for another 30 minutes. After the reaction was completed, unreacted monomers were degassed under reduced pressure at 110 ° C. and 0.5 Torr for 2 hours to remove a polymer (polymer E).

[Synthesis Example 6] 50 parts of Polymer C was placed in a four-necked glass flask equipped with a stirrer and kept at 110 ° C. A mixture of 50 parts of Polymer C, 0.6 part of azobisisobutyronitrile, 19 parts of glycidyl methacrylate, 9 parts of acrylonitrile, and 2 parts of γ-methacryloxypropyltrimethoxysilane was stirred under a nitrogen atmosphere while stirring.
After dropping over a period of time, the mixture was further stirred for 30 minutes. After the reaction is completed, the unreacted monomer is heated to 110 ° C. and 0.5 Torr for 2 times.
A polymer was obtained by degassing under reduced pressure for an hour (Polymer F).

[Synthesis Example 7] 200 parts of Polymer C, 0.5 part of azobisisobutyronitrile, 36 parts of ethyl vinyl ether, 9 parts of hydroxybutyl vinyl ether, 190 parts of xylene, and 53 parts of ethanol were placed in a stainless steel reactor equipped with a stirrer. After charging and removing the residual oxygen in the system, 77 parts of chlorotrifluoroethylene was introduced. Temperature 6
While maintaining the temperature at 5 ° C, the mixture was stirred and reacted for 10 hours. After leaking unreacted monomer, 70 ° C, 2 Torr
The mixture was degassed under reduced pressure for 5 hours to obtain a fluoropolymer composition. The thing to 100 parts _{(CH 3 O) 2 (CH} 3) Si- (C
H _{2) 3} -NCO comprising compound 4.6 parts were added and reacted until no isocyanate was detected at 80 ° C. to give a polymer (polymer G).

Synthesis Example 8 Of the terminal hydroxyl groups of the pentaerythritol-initiated polypropylene oxide adduct having a hydroxyl value of 197, 47% was allylated polyol (unsaturation degree 1.50 mmol / g, hydroxyl value 98.0) 100.
Parts and 28% sodium methoxide methanol solution 33.
Charge 7 parts into a pressure reactor equipped with an introduction tube and a stirrer,
After purging with nitrogen, methanol was distilled off at 110 ° C. and 1 Torr for 10 hours. To this was added 19.0 parts of trimethylchlorosilane over 1 hour, and then 10
The temperature was raised to 0 ° C. and kept at this temperature for 3 hours. This was filtered to remove the by-product salt, and the trimethylsilylation rate was examined by H-NMR. As a result, 93% of the terminal hydroxyl groups were trimethylsilylated.

Further, to 100 parts of this trimethylsilylated polypropylene oxide, 0.02 part of an isopropanol solution of chloroplatinic acid (concentration: 10% by weight) and 15.9 parts of methyldimethoxysilane were added and reacted at 70 ° C. for 6 hours. This was degassed at 70 ° C. and 1 Torr for 1 hour to obtain a compound having a hydrolyzable silicon group and a group capable of forming a hydroxyl group by hydrolysis. The degree of unsaturation of the obtained product was 0.10 meq / g, and 93% of allyl groups in the polyol were silylated by hydrosilylation (Compound H).

[Synthesis Example 9] Allyl alcohol-initiated polypropylene oxide (hydroxyl value 191, degree of unsaturation 3.3)
After charging 100 parts and 36.2 parts of triethylamine into a pressure reactor equipped with an introduction tube and a stirrer and replacing with nitrogen,
The temperature was raised to 60 ° C. After adding 39.3 parts of trimethylchlorosilane to this product over 1 hour, the temperature was raised to 100 ° C. and the temperature was maintained for 3 hours. The mixture was diluted with 100 parts hexane and filtered to remove amine salts. After distilling off hexane, when the trimethylsilylation rate was examined by 1 H-NMR, 83% of the terminal hydroxyl groups were trimethylsilylated.

Further, 0.02 parts of an isopropanol solution of chloroplatinic acid (concentration 10% by weight) and 30.1 parts of methyldimethoxysilane were added to 100 parts of the trimethylsilylated polypropylene oxide, and the reaction was carried out at 70 ° C. for 6 hours. This was degassed at 70 ° C. and 1 Torr for 1 hour to obtain a compound having a hydrolyzable silicon group and a group capable of generating a hydroxyl group by hydrolysis. The obtained product had an unsaturation degree of 0.21 meq / g, and 93% of allyl groups were silylated by hydrosilylation (Compound I).

[Synthesis Example 10] 57 parts of allylamine, 212 parts of triethylamine and 200 parts of hexane were charged into a pressure type glass lining reactor equipped with an introduction tube and a stirrer,
After substituting with nitrogen, the temperature was raised to 60 ° C. After 228 parts of trimethylchlorosilane was added to this product over 3 hours, the temperature was raised to 100 ° C. and kept at this temperature for 3 hours. The mixture was filtered to remove amine salts. After distilling off hexane, vacuum distillation was performed at 1 Torr and 60 ° C. to obtain (N-allyl) hexamethyldisilazane having a purity of 92% by gas chromatography.

Furthermore, to 100 parts of this (N-allyl) hexamethyldisilazane, 0.02 part of an isopropanol solution of chloroplatinic acid (concentration 10% by weight) and 61 parts of trimethoxysilane were added, and the mixture was reacted at 70 ° C. for 6 hours. It was 70 this
Degassed at 50 ° C. and 50 Torr for 1 hour to remove unreacted methyldimethoxysilane to give N- (3-trimethoxysilylpropyl) hexamethyldisilazane (CH ₃ O).
₃ Si (CH ₂ ) ₃ N [Si (CH ₃ ) ₃ ] ₂ was obtained (Compound J).

[Synthesis Example 11] (CH ₃ O) ₃ Si (CH
₂ ) 98 parts of a compound having a structural formula of ₃ SH (LS1390 manufactured by Shin-Etsu Chemical Co., Ltd.), hexamethyldisilazane 48
Part, 1 part of imidazole were charged into a pressure type glass lining reactor equipped with a stirrer, and after purging with nitrogen, 120 ° C
The temperature was raised to and the mixture was stirred for 6 hours. This is 55 ℃, 0.5
Distilled under reduced pressure with Torr and (CH ₃ O) ₃ Si (CH ₂ ) ₃ SSi having a purity of 84% by gas chromatography.
(CH ₃ ) ₃ was obtained (compound K).

[Synthesis Example 12] (C ₂ H ₅ ) (CH ₃ ) C
_{= NCH 2 CH 2 NHCH 2 CH} 2 N = C (CH 3)
100 parts of a compound having a structural formula of (C ₂ H ₅ ) (Epicure H-1 manufactured by Yuka Shell Co., Ltd.) was maintained at 50 ° C., and 112 parts of 3-glycidoxypropyltrimethoxysilane (KBM-403 manufactured by Shin-Etsu Chemical Co., Ltd.) Was added dropwise over 3 hours,
Further, the reaction was completed at 70 ° C. for 3 hours. H
-8 of this by NMR and gas chromatography
It was found that 6% was a compound having the structural formula of the 1: 1 adduct represented by Chemical formula 1 (Compound P).

[0041]

[Chemical 1]

[Synthesis Example 13] 147 parts of 3-glycidoxypropyltrimethoxysilane (KBM-403, manufactured by Shin-Etsu Chemical Co., Ltd.) per 100 parts of hexamethyldisilazane.
Was reacted in an autoclave at 50 ° C. for 24 hours, and it was confirmed that the epoxy group had disappeared. Analysis by gas chromatography revealed that 78% of this was a compound having the structural formula of a 1: 1 adduct of hexamethyldisilazane and 3-glycidoxypropyltrimethoxysilane (compound Q).

Comparative Synthesis Example 1 Of the terminal hydroxyl groups of the pentaerythritol-initiated polypropylene oxide adduct having a hydroxyl value of 197, 47% was allylated polyol (unsaturation degree 1.50 mmol / g, hydroxyl value 98.0).
100 parts and 33.7 parts of 28% sodium methoxide methanol solution were charged into a pressure type glass lining reactor equipped with an introduction tube and a stirrer and after purging with nitrogen, 110 ° C.,
Methanol was distilled off over 10 hours at 1 Torr.

Trimethylchlorosilane 19.
After adding 0 part over 1 hour, the temperature was raised to 100 ° C. and the temperature was maintained for 3 hours. This was filtered to remove the by-product salt, and a compound having an active group-forming group but no hydrolyzable silicon group was obtained. When the trimethylsilylation rate was examined by 1 H-NMR, 93% of the terminal hydroxyl groups were trimethylsilylated (Compound L).

[Examples 1 to 12] 120 parts of colloidal calcium carbonate (white gloss CCR manufactured by Shiraishi Kogyo Co., Ltd.) and 100 parts of the compositions shown in Tables 1 and 2 and heavy calcium carbonate (Whiten SB manufactured by Shiraishi Calcium). 20 parts, dioctyl phthalate 55 parts, hydrogenated castor oil (Kusumoto Kasei Disparlon # 30
5) 3 parts, titanium oxide (Taipek R-82 manufactured by Ishihara Sangyo)
0) 5 parts were added and kneaded with 3 rolls.

To 100 parts of this composition, 4 parts of a mixture of 26.3 parts of tin dioctylate, 8.7 parts of laurylamine and 65 parts of dioctyl phthalate was added, and JIS was added.
An H-shaped test piece was prepared in accordance with A5758, and the adhesive strength to aluminum, that is, 50% modulus (unit: kg / cm ² ) and breaking strength (unit: kg / cm)
² ), rupture state (ratio of interfacial peeling, unit:%) and rupture elongation (unit:%) were measured. The results are shown in Tables 1-2.

[Examples 13 to 15] Colloidal calcium carbonate (white gloss CCR manufactured by Shiraishi Industry Co., Ltd.) was used with 97 parts of Polymer A.
75 parts, ground calcium carbonate (Whiten SB) 75
Part, 5 parts of titanium oxide, 50 parts of dioctyl phthalate and an aliphatic amide (Disparlon # 6500) were added, and the mixture was kneaded with a three-roll mill. Then, it was dried at 80 ° C. and 3 Torr. To this product, 0.2 part of vinyltrimethoxysilane was added and further heated to 50 ° C. After cooling this to room temperature, 3 parts of each of compounds J, P, and Q were added, and then 2 parts of dibutyltin dilaurate was added to obtain a one-pack composition. The initial viscosity of this product and the viscosity of the product stored in a gear oven at 50 ° C for 7 days (unit: both 10 ⁴ cP)
Was measured, and the storage stability (unit:%) was evaluated from the ratio of the two. The results are shown in Table 3.

Comparative Examples 1 to 6 Comparative Example 1 is an example in which the specified compound of the present invention is not used. Comparative Examples 2-6
Are examples corresponding to Examples 1, 5, 10, 8, and 12, respectively, and compound M (3-trimethoxysilylpropylamine) having an active group instead of an active group-forming group and having a hydrolyzable silicon group. Alternatively, it is an example using Compound N (3-trimethoxysilylpropyl mercaptan). The results are shown in Table 4.

Comparative Examples 7 to 9 In Comparative Example 7, compound J
A composition was prepared in exactly the same manner as in Example 13 except that compound M was used in place of Further, in Comparative Example 8, instead of the compound P used in Example 14, Epicures H-1 and K were used.
BM-403 was added separately. In Comparative Example 9, hexamethyldisilazane and KBM-403 were separately added instead of the compound Q. The storage stability and the like were examined in the same manner as in Examples 13 to 15. The results are shown in Table 5.

[0050]

[Table 1]

[0051]

[Table 2]

[0052]

[Table 3]

[0053]

[Table 4]

[0054]

[Table 5]

The cured products of the compositions of the examples all have a good elongation at break and exhibit excellent properties as an elastic body. Further, the degree of interfacial peeling is high, and the performance as a waterproofing agent or sealant is good. The cured product of the composition of Comparative Example has a low elongation at break and a high degree of cohesive failure at the time of breaking, so that the breaking strength is rather lowered despite the high modulus.

The compositions of Examples 13-15 are the same as Comparative Examples 7-
It can be seen that the storage stability is clearly improved as compared with the composition of No. 9.

[0057]

Industrial Applicability According to the present invention, a room temperature curable composition which is particularly useful as a sealing material, an adhesive, a coating material or the like as an elastic material having excellent adhesion to a substrate can be provided.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Internal reference number FI Technical display location C09D 201/10 PDC C09J 201/10 JAQ C09K 3/10 G (72) Inventor Takao Doi Yokohama, Kanagawa Prefecture 1150, Hazawa-machi, Kanagawa-ku, Asahi Glass Co., Ltd. Central Research Laboratory (72) Inventor Noriko Yamazaki 3-3-3 Tomioka, Urayasu City, Chiba Keisei Sanko F Building No. 420

Claims (3)

[Claims] 1. A polymer containing 100 parts by weight of a polymer containing at least one hydrolyzable silicon group and an active group selected from a hydroxyl group, a mercapto group, an amino group, an amide group and a carboxyl group by hydrolysis. A curable composition comprising 0.1 to 100 parts by weight of a compound containing the group produced in Step 1 and at least one hydrolyzable silicon group represented by Structural Formula A below. R _3-a -SiX a in _{(OSiX b Q 2-b)} m -T- ·· A ( wherein, X is a hydroxyl group, a halogen atom, an alkoxy group, an alkenoxy group, an acyloxy group, an amide group, an amino group and a ketoxymate A group selected from the group, R and Q are substituted or unsubstituted monovalent hydrocarbon groups having 1 to 20 carbon atoms, T is a substituted or unsubstituted divalent hydrocarbon group having 1 to 20 carbon atoms, and a is 2 or 3, b is 0, 1 or 2, m is 0
An integer from -18. Here, R and Q may be different or the same. ) 2. The curable composition according to claim 1, wherein the main chain of the polymer containing at least one hydrolyzable silicon group in the molecule consists essentially of polyoxyalkylene. 3. The main chain of a polymer containing at least one hydrolyzable silicon group in the molecule is acrylic acid ester, methacrylic acid ester, acrylonitrile, styrene, butadiene, vinyl ester, vinyl halide, fluorinated olefin, and It is constituted by polymerizing one kind or two kinds or more selected from vinyl ether.
Curable composition.