JPH08151563A - Adhesive composition - Google Patents

Abstract

PURPOSE: To provide an adhesive composition which shows rubber elasticity after curing, contains a large amount of a filler manifesting solid adhesion strength and maintains excellent workability even at lowered temperature, for example, in winter. CONSTITUTION: This adhesive composition comprises 100 pts.wt. of a polyether bearing reactive silicon groups in the molecule, 30-70 pts.wt. of an epoxy resin, 50-120 pts.wt. of a colloidal light-weight calcium carbonate, 10-100 pts.wt. of calcium carbonate fine powder, 10-100 pts.wt. of heavy-weight calcium carbonate, 2-10 pts.wt. of hydrophobic silica fine powder, 0.5-5 pts.wt. of an organotin catalyst and 5-50 pts.wt. of at least one solvent selected from toluene, cellosolve, methyl ethyl ketone and alcohols.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to adhesive compositions.

[0002]

2. Description of the Related Art An adhesive that exhibits rubber elasticity after curing can absorb strain when external force is applied, and is therefore suitable as an adhesive for attaching floor materials such as tiles. An example of an adhesive composition that gives such a flexible cured product is disclosed in Japanese Patent Laid-Open No. Sho 61-61.
No. 268720.

Here, (A) a rubber-based organic polymer containing at least one reactive silicon group in the molecule, (B)
By using an epoxy resin and (C) an adhesive containing a silicon compound containing a functional group capable of reacting with an epoxy group and a reactive silicon group in the molecule in a specific ratio, the brittleness of a cured epoxy resin is improved. It is described that a flexible cured product is obtained thereby.

However, this adhesive composition has a very high viscosity at low temperature (for example, 5 ° C.) such as in winter, when the adhesive is taken out of the container, when the two liquids are mixed, and when the mixed adhesive is further mixed. Each workability when the composition is applied to an object is remarkably deteriorated, which not only lowers the work efficiency, but also causes the finish of the bonding work to be extremely poor.

Similarly, an adhesive composition that gives a cured product having flexibility also contains a silicon compound having a functional group capable of reacting with an epoxy group and a reactive silicon group in one molecule with respect to an epoxy resin. An adhesive composition is disclosed in
It is disclosed in Japanese Patent No. 100881. It has been proposed that various fillers such as heavy calcium carbonate, colloidal calcium carbonate, hydrophobic finely divided silica, or an organic anti-sagging agent be mixed therein to prevent sagging at the time of applying the adhesive.

However, although this adhesive composition prevents sagging in the bonding work of the adhesive itself, when a building material such as a heavy decorative tile is stuck to the wall surface or ceiling surface, the building material to be stuck is It is difficult to use for such an application because it shifts downward or hangs down.
In the adhesive composition containing a large amount of the filler as described above, even if the building material such as a heavy decorative tile can be bonded without deviation during the bonding, as long as it has the composition described in the above publication, Since the viscosity of the adhesive composition is extremely high, the workability of the bonding work at a low temperature such as in winter is remarkably deteriorated as in the above-mentioned technique.

Further, even if these problems are solved, the product variability of the magnetic tiles such as mass and size is increasing more and more in order to meet various user needs for high-grade feeling. When using a single-function adhesive for construction, even if it exhibits excellent workability for a certain adherend, it does not withstand the weight of the other adherend. For some reason, the workability has deteriorated due to misalignment, and it is inevitable that multiple types of adhesives with different performances are required due to the misalignment of tiles and workability, which is extremely troublesome in the production and distribution of the adhesive. It has become a thing.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems of the prior art, and an object thereof is an adhesive composition which exhibits rubber-like elasticity after curing. Thus, under any climatic condition, regardless of the type of adherend, an adhesive composition that always exhibits excellent workability is provided.

[0009]

The present invention according to claim 1 is a polyether 1 having a reactive silicon group in one molecule.
00 parts by weight, epoxy resin 30 to 70 parts by weight, colloidal light calcium carbonate 50 to 120 parts by weight, fine calcium carbonate 10 to 100 parts by weight, heavy calcium carbonate 10 to
100 parts by weight, 2 to 10 parts by weight of hydrophobic finely divided silica, 0.5 to 5 parts by weight of an organic tin catalyst, and 5 to 50 parts by weight of at least one solvent selected from the group consisting of toluene, cellosolve, methyl ethyl ketone and alcohol. An adhesive composition characterized by

According to the second aspect of the present invention, agent A: 100 parts by weight of a polyether having a reactive silicon group in one molecule,
Agent B: 30 to 70 parts by weight of epoxy resin, 60 to 240 parts by weight of colloidal light calcium carbonate, 20 to 150 parts by weight of finely divided calcium carbonate, 2 to 10 parts by weight of hydrophobic finely divided silica, 0.5 to 5 parts by weight of organotin catalyst. An adhesive composition comprising 5 to 50 parts by weight of at least one solvent selected from the group consisting of, toluene, cellosolve, methyl ethyl ketone, and alcohol, wherein 10 to 120 parts by weight of colloidal light calcium carbonate in the agent B and finely divided carbonic acid are included. Calcium 10
The gist of the adhesive composition is that 50 parts by weight are packaged.

In the present invention, the polyether having a reactive silicon group in one molecule (hereinafter, abbreviated as a modified silicon compound) has flexibility to a cured product obtained by curing the adhesive composition of the present invention. It is added for the purpose of giving a functional group capable of reacting with the epoxy resin in the molecule.

The above-mentioned reactive silicon group means a group which is crosslinkable by a silanol condensation reaction containing a silicon atom to which a hydrolyzable group or a hydroxyl group is bonded. The functional group capable of reacting with the epoxy resin may, for example, be an amino group, a mercapto group, an epoxy group or a carboxyl group.

A typical example of such a modified silicone compound is a compound in which a methyldimethoxysilyl group is substituted at both ends of polyether, and the polyether chain is substituted with a functional group capable of reacting with the epoxy resin. Is what you are doing. Specifically, it is commercially available under the trade name of Cyril 5B25 or Cyril 5B30 manufactured by Kaneka Corporation.

In the present invention, the epoxy resin is blended in an amount of 30 to 70 parts by weight with respect to 100 parts by weight of the above-mentioned modified silicone compound as a component for increasing the adhesive strength of a cured product obtained by curing the adhesive composition of the present invention. To be done. Examples of the epoxy resin used in the present invention include epichlorohydrin-bisphenol A type epoxy resin, epichlorohydrin-bisphenol F type epoxy resin, water-added bisphenol A type epoxy resin, urethane-modified epoxy resin, and the like. However, the epoxy resin that is generally used can be widely used. However, from the efficiency of the curing reaction, 1
It is effective to use an epoxy resin having a plurality of epoxy groups in the molecule.

When the content of the above-mentioned epoxy resin is less than 30 parts by weight with respect to 100 parts by weight of the modified silicon compound, the adhesive strength of the cured product of the adhesive after the adhesion work is not sufficiently expressed, and 70 parts by weight is added. If it exceeds, the hardness of the cured product becomes too high and it becomes weak against impact force.

It goes without saying that a curing agent for curing the epoxy resin may be added. Examples of such epoxy resin curing agents include polyethylenetetramine, tetraethylenepentamine, diethylaminopropylamine, N-aminoethylpiperazine, isophoronediamine, and 2,4,6-tris (dimethylaminomethyl) phenol. To be

The above-mentioned epoxy resin curing agent is preferably a modified silicone in a container different from the container in which the epoxy resin is sealed until the adhesive composition of the present invention is manufactured and used. The compound and the compound are filled in a predetermined amount, mixed and sealed.

In the present invention, as the filler made of calcium carbonate, colloidal light calcium carbonate, finely divided calcium carbonate and, if necessary, heavy calcium carbonate are used. Generally, the viscosity of an adhesive composition is greatly changed by the addition of a filler such as calcium carbonate, but the colloidal light calcium carbonate finely adjusts the fluctuation of these viscosities. It has a function of giving a stable viscosity adapted to the adherend.

The colloidal light calcium carbonate is a light calcium carbonate in a special dispersion state,
It has a mean particle size of about 10 μm and an apparent specific gravity of about 0.2.

In the present invention, colloidal light calcium carbonate acts as a thickening agent in the adhesive composition of the present invention, as described above, and is blended in the above specified ratio. As the above-mentioned colloidal light calcium carbonate, there are those whose surface has been made hydrophobic by treatment with a surface treatment agent such as fatty acid or rosin (surface-treated fine calcium carbonate). Depending on the type of these surface treatment agents, fatty acid-based, silicic acid Type, sulfonic acid type and the like. In order to enhance thixotropy of the adhesive composition, it is desirable to use a fatty acid-based colloidal light calcium carbonate.

The amount of the colloidal light calcium carbonate added is 50 with respect to 100 parts by weight of the modified silicon compound.
If it is less than 10 parts by weight, the action as a thickening agent including thixotropy improvement will not be sufficiently exhibited, and if it exceeds 120 parts by weight, the structural viscosity of the adhesive composition will be too high in cold conditions such as winter.
If it exceeds 240 parts by weight, the structural viscosity of the adhesive composition becomes too high even at a high temperature such as in summer, so that the workability at the time of application work is deteriorated, and at the same time, the durability of the cured adhesive composition is lowered.

The colloidal light calcium carbonate according to claim 2 is packaged as a thickener, and the packaged amount is determined according to the type of adherend and environmental conditions at the time of construction. The amount is set so that it can be applied and the function of the adhesive composition of the present invention is not lost even if the entire amount is used. When the whole amount of the packaged product is not used, for example, 50 to 1 parts of colloidal light calcium carbonate is contained in the adhesive composition with respect to 100 parts by weight of the modified silicon compound.
When only 20 parts by weight is blended, the lightest adherend is in a state in which it can be applied with favorable workability in cold weather such as winter.

The finely divided calcium carbonate is obtained by further pulverizing the light calcium carbonate, and like the colloidal light calcium carbonate, the surface thereof is treated with a surface treatment agent such as fatty acid or rosin to make the surface hydrophobic ( There is also surface-treated fine powder calcium carbonate). These fine calcium carbonate particles have an average particle size of 0.07 to 0.15 μm and 0.2
It has an apparent specific gravity of 5 to 0.4 g / ml. In the present invention, finely divided calcium carbonate acts as a thickener in the adhesive composition of the present invention, and particularly contributes greatly to thixotropy improvement.

The amount of the finely divided calcium carbonate added is the same as that of the colloidal light calcium carbonate, and the amount of the finely divided calcium carbonate added is the above-mentioned modified silicon compound 100.
If the amount is less than 10 parts by weight, the action as a thickening agent for improving thixotropy is not sufficiently exhibited, and if it exceeds 100 parts by weight, the structural viscosity of the adhesive composition is high in cold weather such as winter. When it exceeds 150 parts by weight, the structural viscosity of the adhesive composition becomes too high even at a high temperature such as summer, so that the workability at the time of application is deteriorated and the durability of the cured adhesive is also reduced.

The finely divided calcium carbonate according to claim 2 is packaged as a thickening agent. However, as in the case of colloidal light calcium carbonate, it is packaged that the type of adherend and the environmental conditions at the time of construction. In light of the above, the amount of the adhesive composition of the present invention is determined so that it can be constructed, and the function of the adhesive composition of the present invention is not lost even if the entire amount is used. When the whole amount of the packaged is not used, for example, when the finely divided calcium carbonate is mixed in the adhesive composition in an amount of only 10 to 100 parts by weight based on 100 parts by weight of the modified silicon compound, the lightest adherend is It is in a state where it can be pasted with favorable workability in cold weather such as winter.

The heavy calcium carbonate acts as a thickener in the adhesive composition of the present invention, and has a function of giving a stable viscosity together with the addition of the colloidal light calcium carbonate and the fine calcium carbonate.

The addition amount of the above-mentioned heavy calcium carbonate is the same as in the case of the colloidal light calcium carbonate.
Similarly, it is 10 to 100 parts by weight with respect to 0 parts by weight.

In the present invention, the hydrophobic finely divided silica is added to enhance the adhesive strength of the cured product of the adhesive of the present invention, and usually has a particle size of about 0.007 μm and its surface is, for example, silicone. Those that have been treated with oil, octylsilane, or the like to be hydrophobic are used. When the amount of the hydrophobic fine silica powder added is less than 2 parts by weight with respect to 100 parts by weight of the modified silicon compound, the adhesive cured product is not sufficiently reinforced with adhesive strength, and when the amount exceeds 10 parts by weight, the adhesive is used. The structural viscosity of the composition becomes too high, deteriorating the workability at the time of coating work, and at the same time, the durability of the cured product of the adhesive decreases.

In the present invention, an organotin catalyst such as dibutyltin laurate is used as a catalyst for curing the modified silicon compound. The amount of the organotin catalyst added was 0.1% by weight based on 100 parts by weight of the modified silicon compound.
If the amount is less than 5 parts by weight, it does not sufficiently act as a curing catalyst for the modified silicon compound, leaving an uncured portion.
If it exceeds the amount by weight, the catalytic action will be saturated, and it is meaningless to use any more.

The organotin catalyst for curing the above-mentioned modified silicon compound is different from the container in which the modified silicon compound is enclosed until the adhesive composition of the present invention is manufactured and used. The container is preferably weighed and mixed in a predetermined amount together with the epoxy resin, and then enclosed.

In the present invention, toluene, cellosolve,
The group of solvents consisting of methyl ethyl ketone and alcohol is
The adhesive composition of the present invention is blended for the purpose of reducing the viscosity, and at least one solvent selected from the group of the above solvents is used for adhesion while maintaining excellent various properties of the adhesive composition of the present invention. The viscosity of the agent composition can be reduced and the rate of change in viscosity due to temperature changes can be reduced, and the coating workability at the time of bonding work can be significantly improved.

That is, the solvent composed of toluene, cellosolve, methyl ethyl ketone and alcohol is excellent in compatibility with the epoxy resin due to its structure and the like, and has a very low glass transition point and melting point. Therefore, it is suitable for a plasticizer such as dioctyl phthalate. In comparison, the temperature dependence of the viscosity of the epoxy resin, which represents the performance of the adhesive composition of the present invention, is reduced and stabilized. As a result, by mixing with other additives, it becomes possible to constantly improve the workability at low temperatures in winter and the deviation of building materials such as tiles at the time of bonding work under high temperatures in summer.

The cellosolve used in the present invention refers to a monoether of ethylene glycol, for example,
Examples thereof include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and ethylene glycol monobutyl ether.

This is because when the amount of the solvent added is less than 5 parts by weight based on 100 parts by weight of the modified silicon compound, the effect of reducing the viscosity and the effect of stabilizing the rate of change in viscosity are small.
If it exceeds 50 parts by weight, the viscosity of the adhesive composition is lowered, which may cause a deviation of building materials such as tiles during the construction work for adhesion.

In the adhesive composition of the present invention, if necessary, a filler such as an organic anti-sagging agent, a fibrous inorganic material or an organic filler, a stabilizer, and other additives may be deviated from the spirit of the present invention. It can be added within the range. Grace
The organic anti-sagging agent is an additive that is added to enhance thixotropy and prevent sagging of the adhesive.
Examples include vegetable polymerized oil, hydrogenated castor oil, and fatty acid amide wax.

[0036]

The adhesive composition of the present invention according to claim 1 has 100 parts by weight of a polyether having a reactive silicon group in one molecule, 30 to 70 parts by weight of an epoxy resin, and 50 to 120 parts by weight of colloidal light calcium carbonate. , Finely divided calcium carbonate 1
0 to 100 parts by weight, heavy calcium carbonate 10 to 100 parts by weight, hydrophobic fine powder silica 2 to 10 parts by weight, organic tin catalyst 0.5 to 5 parts by weight, selected from the group consisting of toluene, cellosolve, methyl ethyl ketone and alcohol. Since it contains 5 to 50 parts by weight of at least one solvent, it has a large mass even at high temperatures in summer, and even large-sized adherends can be applied without deviation and at low temperatures in winter. Also in the above, the workability of applying the adhesive composition is excellent, and in both cases, a strong adhesive force is maintained and a beautiful sticking work can be performed.

The adhesive composition of the present invention according to claim 2 is
Agent A: 100 parts by weight of polyether having a reactive silicon group in one molecule, Agent B: 30 to 70 parts by weight of epoxy resin,
Colloidal light calcium carbonate 60-240 parts by weight, fine powder calcium carbonate 20-150 parts by weight, hydrophobic fine powder silica 2-10 parts by weight, organic tin catalyst 0.5-5 parts by weight, a group consisting of toluene, cellosolve, methyl ethyl ketone and alcohol. An adhesive composition comprising 5 to 50 parts by weight of at least one solvent selected from the following, wherein 10 to 120 parts by weight of colloidal light calcium carbonate and 10 to 50 parts by weight of finely divided calcium carbonate are contained in Agent B. Since the adhesive composition consisting of only the agent A and the agent B can be applied to the lightest adherend with favorable workability at low temperatures such as winter, it is necessary to apply the packaged amount. Depending on the type of adherend and environmental conditions at the time of use, the amount used is determined and added to the product, and a strong adhesive force is always maintained and workability is improved. Construction can be.

[0038]

EXAMPLES In order to explain the present invention in more detail, examples are shown below.

[Materials used] 1. Modified Silicon Compound: Cyril 5B25 and Cyril 5B30 (Kanefuchi Chemical Co., Ltd., trade name) 40:60
(Parts by weight) mixture. 2. Epoxy resin: Bisphenol A type glycidyl ether (Okaka Shell Epoxy Co., trade name: Epicoat 8
28XA) 3. Tertiary amine: 2,4,6-tris (dimethylaminomethyl) phenol (Rohm and Haas Co., trade name: DMP-30) 4. Organotin catalyst: Mixture of dibutyltin dilaurate and dibutyltin oxide (manufactured by Sankyo Machine Co., Ltd., trade name: SB-
65) 5. Colloidal calcium carbonate, Maruo Calcium, trade name: Calfine 200M

6. Fine calcium carbonate, Nitto Koka Kogyo Co., Ltd., trade name: NCC-45 7. 7. Surface-treated calcium carbonate Shiraishi Calcium Co., trade name: Homocal D, surface-treated organic active substance, oil absorption: 25 ml / 100 g Heavy calcium carbonate manufactured by Shiraishi Industry Co., Ltd., product name: Whitelon SB 9. Fibrous inorganic filler: manufactured by Showa Mining Co., Ltd., trade name: Milcon LS 10. Organic anti-sagging agent: manufactured by Kusumoto Kasei Co., Ltd., trade name: Disparlon # 305, castor oil hydrogenated oil.

11. Hydrophobic silica: manufactured by Nippon Aerosil Co., Ltd., trade name: Aerosil R-202 12. Solvent-1: Ethylene glycol monoethyl ether 13. Solvent-2: Toluene 14. Solvent-3: Methyl ethyl ketone 15. Solvent-4: Alcohol

(Examples 1 to 7 and Comparative Examples 1 to 3) [Preparation of Adhesive Composition] Agents A and B prepared by mixing the above materials in the proportions shown in Tables 1 and 2 are planetary mixers ( (Manufactured by Inoue Seisakusho Co., Ltd.) was used, and the mixture was stirred and mixed at room temperature for 60 minutes, filled with 15 kg each in a 20-liter pail and sealed, and conditioned at each temperature of 5 ° C., 20 ° C. and 40 ° C. for 24 hours. Next, the above-mentioned agents A and B were mixed at the ratios shown in Table 1 and Table 2 using a spatula in the same manner as in the field work for bonding work to prepare an adhesive composition.

(Examples 8 to 11 and Comparative Examples 4 to 7) [Preparation of Adhesive Composition] Agent A, agent B and agent C prepared by blending the above materials in the proportions shown in Table 3 were each mixed in a planetary mixer ( (Manufactured by Inoue Seisakusho Co., Ltd.) was used, and the mixture was stirred and mixed at room temperature for 60 minutes, filled with 15 kg each in a 20-liter pail and sealed, and conditioned at each temperature of 5 ° C., 20 ° C. and 40 ° C. for 24 hours. Next, the above-mentioned agents A, B and C were mixed in the proportions shown in Table 3 using a spatula in the same manner as in the field work for bonding work to prepare an adhesive composition.

The performances of the adhesive compositions of Examples 1 to 11 and Comparative Examples 1 to 7 prepared as described above were evaluated by the following methods, and the results are shown in Tables 1, 2 and 3. However, the performance regarding the adhesive strength of the cured adhesives of each of the Examples and Comparative Examples is good, and therefore the description thereof is omitted. [Evaluation] Removability at low temperature: Agent A and agent B or agent A, agent B and agent C conditioned at a temperature of 5 ° C. for 24 hours
How difficult is it to remove each agent from the container with a spatula?
Sensory evaluation based on the size of the resistance applied to the spatula was evaluated in three levels: ⊚: very easily taken out, ∘: easily taken out, ×: difficult to take out.

Mixability at low temperature: Agent A and agent B or A at a temperature of 5 ° C. taken out from the container in the preceding paragraph
The difficulty of immediately mixing the agents B, C and C with a spatula is sensuously determined from the magnitude of the resistance applied to the spatula.
◎: Very easy to mix, ○: Easy to mix,
Poor: Hard to mix, evaluated in two stages.

Applicability at low temperature: Using an adhesive composition having a temperature of 5 ° C. and mixed at the temperature of 5 ° C. using a comb trowel with 5 mm squares, a ratio of 1.2 kg / m ² was obtained.
The degree of difficulty when applying to a vertical wall is sensuously due to the amount of resistance applied to the spatula, ◎: very easy to apply,
◯: Easy to apply, Δ: slightly difficult to apply, ×: difficult to apply.

Misalignment of tiles at high temperature (Examples 1 to 1)
1, Comparative Examples 1 to 7): Agent A and Agent B or Agent A, Agent B and Agent C conditioned at a temperature of 40 ° C. for 24 hours
The adhesive composition prepared by mixing the agents at the same temperature was applied to a vertical wall surface made of plywood at a rate of 1.2 kg / m ² using a comb trowel with 5 mm square edges, and 60 mm
× 227 mm × 10 mm, 250 g weighted porcelain tiles with soles are stacked in two layers (heavy weight) and bonded, and the state of the initial adhesive displacement is visually observed, ○: no displacement,
Evaluation was made in three grades: Δ: slightly displaced, ×: misaligned.

Misalignment of tiles at high temperature (Examples 8 to 1)
1, Comparative Examples 4 to 7): Agent A and Agent B or Agent A, Agent B and Agent C conditioned at a temperature of 40 ° C. for 24 hours
The adhesive composition prepared by mixing the agents at the same temperature was applied to a vertical wall surface made of plywood at a rate of 1.2 kg / m ² using a comb trowel with 5 mm square edges, and 60 mm
A 227 mm x 10 mm, 250 g weight porcelain tile with backing feet (lightweight material) was adhered, and the state of deviation in the initial state of adhesion was visually observed. ○: no deviation, x: deviation
The grade was evaluated.

[0049]

[Table 1]

[0050]

[Table 2]

[0051]

[Table 3]

[0052]

EFFECT OF THE INVENTION Since the adhesive composition of the present invention is constructed as described above, it has a suitable thixotropic property, and the drug is taken out of the container, mixed and applied to the adhesive surface even at a low temperature. The workability of each work is excellent, and it has an excellent temperature suitability that it does not shift even when it is applied at a high temperature or when it is adhered to a vertical wall surface of a heavy porcelain tile or the like.

The adhesive composition of the present invention, by the packaged C agent, always maintains a strong adhesive force regardless of the type of adherend and environmental conditions, and has good workability and beautiful adhesion. It becomes possible to attach the body.

Claims (2)

[Claims] 1. 100 parts by weight of a polyether having a reactive silicon group in one molecule, 30 to 70 parts by weight of an epoxy resin, 50 to 120 parts by weight of colloidal light calcium carbonate,
Fine powdered calcium carbonate 10 to 100 parts by weight, heavy calcium carbonate 10 to 100 parts by weight, hydrophobic fine powdered silica 2 to 10
An adhesive composition comprising 5 parts by weight, 0.5 to 5 parts by weight of an organotin catalyst, 5 to 50 parts by weight of at least one solvent selected from the group consisting of toluene, cellosolve, methyl ethyl ketone and alcohol. 2. Agent A: 100 parts by weight of a polyether having a reactive silicon group in one molecule, Agent B: epoxy resin 30.
~ 70 parts by weight, colloidal light calcium carbonate 60 ~ 24
0 parts by weight, fine calcium carbonate 20 to 150 parts by weight, hydrophobic fine silica 2 to 10 parts by weight, organotin catalyst 0.5 to 5
Parts by weight, toluene, cellosolve, methyl ethyl ketone,
An adhesive composition comprising 5 to 50 parts by weight of at least one solvent selected from the group consisting of alcohols, wherein 10 to 120 parts by weight of colloidal light calcium carbonate and 10 to 50 parts by weight of fine calcium carbonate are contained in the agent B. An adhesive composition characterized by being packaged.