JP2766503B2 - Emulsion adhesive composition - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an adhesive composition. More specifically, the present invention relates to an emulsion adhesive composition suitable for adhering a highly crystalline resin molded article such as polyolefin or nylon to an arbitrary material, and a method for producing the same.

[Conventional technology]

In recent years, materials such as automobile parts and home appliance parts have been increasingly plasticized from the viewpoints of weight reduction, economical efficiency, etc. Among them, polyolefins such as polypropylene and polyethylene and highly crystalline resins such as nylon have been used. It is preferably used.

However, since polyolefins and nylons are highly crystalline, in the state of molded articles, if a conventional adhesive is used, adhesion between the polyolefins and nylons or between other adherends is extremely poor. For this reason, in the bonding process for decorating surfaces, such as a bonding process between articles which are highly crystalline resin molded products or a flocking process of the molded products, a plasma treatment or a plasma treatment of the products before applying the adhesive is performed. A method that enables adhesion by performing surface treatment such as application of a primer is employed.

These methods make it possible to bond highly crystalline resin molded products, but they require a complicated surface treatment step, which is extremely disadvantageous in industrial production.

In response to this problem, some of the present inventors have already filed Japanese Patent Application No.
In Japanese Patent Application No. 312592 and Japanese Patent Application No. 62-313634 (both are sometimes referred to as prior inventions), an adhesive obtained by adding a specific chlorinated polyolefin to a conventionally known aqueous emulsion adhesive is used. It has been found that when used, the adhesive strength when a highly crystalline resin molded article such as polyolefin or nylon is bonded to an arbitrary material is remarkably improved.

[Problems to be solved by the invention]

By using the adhesive of the prior application, it has become possible to bond a highly crystalline resin molded article to an arbitrary material, which has been difficult in the past. There is a problem that the adhesive strength is reduced and the adhesive strength is reduced when used after several days from the production. Therefore, it was necessary to use it for bonding immediately after production.

An object of the present invention is to bond a high-crystalline resin molded product such as polyolefin or nylon in a solid state to any material without a need for complicated surface treatment, which has good storage stability and no decrease in adhesive strength. It is an object of the present invention to provide an emulsion adhesive composition which can be made to work.

[Means for solving the problem]

The present inventors have intensively studied means for solving the problems of the prior invention. As a result, instead of the chlorinated polyolefin which is the adhesive component of the prior application, an adhesive obtained by using a modified chlorinated polyolefin in which an acrylate and / or a methacrylate is graft-polymerized to the chlorinated polyolefin. It was found that the use of the agent composition provided good storage stability, and the present invention was completed based on this finding.

The present invention provides an emulsion adhesive composition wherein the resin component in the adhesive composition is 100 parts by weight of an adhesive synthetic resin, and a chlorinated polyolefin having a chlorine content of 10 to 70% by weight,
Emulsion bonding comprising a chlorinated polyolefin having a acrylate and / or methacrylate content of 5 to 60% by weight and a chlorinated polyolefin having a content of 5 to 60% by weight obtained by graft polymerization of an acrylate and / or methacrylate. Agent composition.

As the adhesive synthetic resin, a resin containing an acrylic resin as a main component is preferable. The chlorinated polyolefin is at least one selected from chlorinated polypropylene, chlorinated propylene-α-olefin copolymer, chlorinated polyethylene, and chlorinated ethylene-α-olefin copolymer.
Use seeds.

In particular, the chlorinated polyolefin has an intrinsic viscosity [η] (135
It is preferably a chlorinated crystalline propylene homopolymer and / or chlorinated crystalline propylene-α-olefin copolymer having a chlorinated crystalline propylene homopolymer of 0.01 to 2 dl / g.

As a production method, an acrylic ester obtained by graft polymerization of an acrylic ester and / or a methacrylic ester to a chlorinated polyolefin having a chlorine content of 10 to 70% by weight in an aqueous emulsion containing 100 parts by weight of an adhesive synthetic resin and / or Or methacrylate content 5
A solution comprising 0.05 to 40 parts by weight of a modified chlorinated polyolefin of about 60% by weight and an organic solvent is added and mixed to produce an emulsion adhesive composition.

As the aqueous emulsion of the adhesive synthetic resin used in the present invention, any aqueous emulsion of the adhesive synthetic resin obtained by a known method can be used. For example, in an aqueous medium, one or more polymerizable vinyl monomers are used in the presence of an emulsifier using a polymerization initiator, and if necessary, a molecular weight regulator, a water-soluble polymer compound, or an inorganic compound is added. In the presence of the agent, generally the polymerization temperature
It is obtained by emulsion polymerization at 30 ° C. to 90 ° C. under the conditions of atmospheric pressure to 50 kg / cm ² G for 1 hour to 20 hours.

The polymerizable vinyl monomer is a compound having at least one or more unsaturated bonds in a molecule capable of undergoing radical polymerization or copolymerization, such as acrylic acid and methyl acrylate, ethyl acrylate, and butyl acrylate. ,
Acrylic esters such as hexyl acrylate, heptyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, methacrylic acid and methyl methacrylate, ethyl methacrylate, butyl methacrylate, diethylaminoethyl methacrylate, glycidyl methacrylate, methacrylic acid Methacrylic esters such as 2-hydroxyethyl, aromatic monomers such as styrene, α-methylstyrene, vinyltoluene, and hydroxystyrene;
-Dienes such as butadiene, isoprene, chloroprene and 1,5-hexadiene; maleic acid and diethyl maleate; maleic esters such as di-n-butyl maleate; fumaric acid and diethyl fumarate; and di-n-fumarate. Fumaric acid esters such as -butyl, acrylonitrile, methacrylonitrile, acrylamide, N-methylolacrylamide, methacrylamide, vinyl chloride,
Examples include vinylidene chloride, vinyl acetate, and copolymerizable ethylene. These monomers may be used alone or
More than species are used.

Examples of the polymerization initiator include cumene hydroperoxide, organic peroxides such as t-butyl hydroperoxide, hydrogen peroxide, 2,2-azobisisobutyronitrile, or ammonium persulfate, potassium persulfate, and the like. Radical initiators such as persulfates and combinations of these with reducing agents such as sodium thiosulfate and ferrous chloride are used.

Examples of the emulsifier include anionic surfactants such as fatty acid salts and higher alcohol sulfates, and nonionics such as polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenol ethers, polyoxyethylene alkyl esters, and sorbitan alkyl esters. A surfactant such as a system is used.

The aqueous emulsion after polymerization obtained as described above can be used as it is as an aqueous emulsion of an adhesive synthetic resin, but after adjusting the viscosity with ammonia water or the like, if necessary, further use another synthetic resin. , A filler, a crosslinking agent, a preservative, an ultraviolet absorber and the like may be added.

The aqueous emulsion of the adhesive synthetic resin obtained as described above is used in the present invention, and a commercially available aqueous emulsion adhesive can be used as it is. At this time, there are many types depending on the type of vinyl monomer used, but an optimum one may be selected according to an arbitrary material to be adhered. For example, an acrylic water-based emulsion adhesive using acrylic acid esters as a main vinyl monomer, a vinyl acetate water-based emulsion adhesive using vinyl acetate as a main vinyl monomer, or styrene using styrene as a main vinyl monomer Aqueous aqueous emulsion adhesives are preferably used, and among them, acrylic aqueous emulsion adhesives are preferably used from the viewpoint of weather resistance.

The modified chlorinated polyolefin (hereinafter sometimes referred to as modified chlorinated polyolefin), which is a second resin component of the emulsion adhesive composition of the present invention, which is obtained by graft polymerization of an acrylate and / or a methacrylate, is known. The reaction temperature is 30 ° C. to 120 ° C., and the pressure is atmospheric pressure to 10 kg / cm ² G, in a state in which the polyolefin obtained by the method is dissolved in a solvent such as tetrachloroethane or in an aqueous suspension or in a gas phase. After the chlorination reaction is carried out, usually for 1 hour to 10 hours, by adding chlorine gas under the conditions described above, and using a means for increasing the reaction efficiency such as use of a radical initiator or irradiation of ultraviolet rays as necessary. , Solvent, chlorinated polyolefin obtained by removing water, for example, dissolved in an organic solvent,
A known method such as adding an acrylic ester and / or a methacrylic ester in the presence of a radical initiator and, if necessary, a chain transfer agent, and performing graft polymerization under a temperature condition of 50 ° C to 200 ° C. Is obtained by using

The content of the acrylate and / or methacrylate in the modified chlorinated polyolefin is 5 to 5.
60% by weight is desirable. If the amount is less than 5% by weight, the storage stability of the obtained adhesive composition is insufficient, and if it exceeds 60% by weight, the adhesive strength becomes insufficient.

As the chlorinated polyolefin used in the production of the above-mentioned modified chlorinated polyolefin, polyolefins obtained by a known method regardless of stereoregularity, for example, polypropylene, propylene-α-olefin copolymer, polyethylene, ethylene Chlorinated polyolefins such as -α-olefin copolymers, chlorinated polypropylene, chlorinated propylene-α-olefin copolymers, chlorinated polyethylene, chlorinated ethylene-α-olefin copolymers, and the like, The chlorine content of the chlorinated polyolefin is preferably from 10 to 70% by weight. When the chlorine content is out of this range, the adhesive strength of the obtained adhesive composition becomes insufficient. The α-olefin used for copolymerization with propylene or ethylene includes, in addition to ethylene and propylene, butene-1, hexene-1, and octene-
Linear olefins such as 1, 4-methylpentene-1
And dienes such as butadiene and isoprene.

In the above chlorinated polyolefin, from the viewpoint of adhesiveness and heat resistance, chlorinated crystalline polypropylene or chlorinated crystal having an intrinsic viscosity [η] (measured in tetralin at 135 ° C., the same applies hereinafter) of 0.01 to 2 dl / g A water-soluble propylene-α-olefin copolymer is preferably used.

Examples of the acrylate and / or methacrylate used in the production of the modified chlorinated polyolefin include methyl acrylate, ethyl acrylate, n-butyl acrylate, i-butyl acrylate, hexyl acrylate, and acrylic acid. Octyl, acrylates such as 2-ethylhexyl acrylate, methyl methacrylate, ethyl methacrylate, n-butyl methacrylate,
Examples include methacrylates such as i-butyl methacrylate, hexyl methacrylate, octyl methacrylate, and 2-ethylhexyl methacrylate. These monomers may be used alone or in combination of two or more. Further, in addition to these monomers, an amount of a monomer copolymerizable with the above monomers, such as styrene, acrylonitrile, and vinyl acetate, in an amount not to impair various properties of the adhesive composition of the present invention. It is also possible to use them in combination.

Furthermore, examples of the radical initiator used in the production of the modified chlorinated polyolefin include the same ones as those used in the production of the above-mentioned adhesive synthetic resin emulsion. preferable. In particular,
Benzoyl peroxide, dicumyl peroxide,
Di-t-butyl peroxide, lauroyl peroxide, 2,5-dimethyl-2,5-di (t-butylperoxy) hexyne-3,2,5-dimethyl-2,5-di (t-butylperoxide) Oxy) hexane and the like.

The emulsion adhesive composition of the present invention essentially requires the above two components as a synthetic resin component, and the composition ratio of each component is 0.05 to 40 modified chlorinated polyolefin per 100 parts by weight of the adhesive synthetic resin component. It must be parts by weight. If the modified chlorinated polyolefin is outside the above range, the adhesive strength of the obtained adhesive composition will decrease.

The emulsion adhesive composition of the present invention is an aqueous emulsion essentially containing the synthetic resin component having the above-mentioned composition, and the following production method is shown.

That is, it can be obtained by adding a solution comprising (B) a modified chlorinated polyolefin and an organic solvent to the above-mentioned (A) synthetic resin aqueous emulsion. If no organic solvent is used, the adhesive strength of the obtained adhesive composition will be insufficient. The amount of the organic solvent used is not particularly limited as long as the modified chlorinated polyolefin is dissolved, but is not particularly limited.
Generally, it is about 2 to 30 times the weight of the modified chlorinated polyolefin.

Any solvent that can be used as an organic solvent may be used as long as the above-mentioned modified polyolefin is dissolved.Examples include aromatic hydrocarbons such as toluene and xylene, chlorinated hydrocarbons such as trichloroethylene, dichloroethane, and trichloroethane. And ketones and esters, and one or more of these are used.

In this solution, a resin such as rosin ester or petroleum resin may be added in an amount not to impair various properties of the adhesive composition of the present invention, or an aqueous solution of a surfactant may be further added. After mixing, it is also possible to add to the adhesive synthetic resin aqueous emulsion.

In addition, when a commercially available aqueous emulsion type adhesive is used as the aqueous emulsion of the adhesive synthetic resin, when the above solution is added, the obtained adhesive may become paste-like. By adding water to a commercially available aqueous emulsion-type adhesive in advance, it is possible to stably maintain the emulsion state even after the addition of the above solution.

Thus, the emulsion adhesive composition of the present invention is obtained, but from the viewpoint of workability, the resin component concentration in the composition is 10 to 65.
It is preferable that the viscosity is in the range of about 100% to 30,000 cps by weight.

In addition, when a relatively large amount of an organic solvent is used in the production, at room temperature to about 80 ° C., the obtained emulsion can be distilled under reduced pressure to remove a desired amount of the organic solvent. is there.

The emulsion adhesive composition of the present invention obtained as described above is used for bonding of highly crystalline resins such as polyolefins and nylons to each other for molding and bonding for surface decoration such as flocking of the moldings. Used for As a method of performing the bonding, a known method similar to the conventional aqueous emulsion type adhesive is used.

〔Example〕

Hereinafter, the present invention will be described more specifically with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples.

The examples are described separately for 1. Adhesion of polypropylene injection molded piece to nylon non-woven fabric, 2. Adhesion of polypropylene injection molded piece to nylon pile.

1. Adhesion between polypropylene injection molded piece and nylon non-woven fabric The test materials and test method are as follows.

1) Test material 10cm long, 2cm wide, 3mm thick injection molded piece made of polypropylene, and 10cm long, 2cm wide nonwoven fabric made of nylon 2) Adhesive polypropylene injection molded piece, nylon nonwoven fabric, 2cm square at each end After applying an adhesive to the portion with a brush, both the coated surface and the non-coated surface were overlapped and bonded.
Subsequently, after drying at 80 ° C. for 30 minutes, it was left at room temperature for 24 hours.

3) Measurement of adhesive strength At room temperature, using a Tensilon-type tensile tester, each end of the unbonded test material was turned 20 ° / 180 mm in the 180 ° direction.
And the peel strength (Kgf / cm) was measured.

(Example 1) The intrinsic viscosity [η] is 0.70 dl / g, and the chlorine content is 30.0% by weight.
N-butyl acrylate obtained by dissolving the chlorinated crystalline propylene homopolymer in xylene and graft-polymerizing the chlorinated crystalline propylene homopolymer with n-butyl acrylate under graft polymerization conditions. 12 g of chlorinated crystalline propylene homopolymer modified with 35% by weight of n-butyl acrylate was added to 150 ml of xylene and dissolved to obtain a solution.

Then, an aqueous adhesive emulsion of 400 g of an acrylic / styrene copolymer resin-based aqueous adhesive (manufactured by Kanebo NS Co., Ltd., trade name: Iodosol AA57, resin component 40% by weight) was added to 80 g of water. Was added and mixed to obtain an emulsion adhesive composition. When an adhesive test was performed on the obtained adhesive composition, the peel strength was 2.30 kgf / cm. Also, after the obtained adhesive composition was put in a glass flask and stoppered, left under a 30W fluorescent lamp and left at 1.5 m for 2 months,
When an adhesive test was performed on the adhesive composition, the peel strength was 2.10 kgf / cm.

(Comparative Example 1) In Example 1, instead of n-butyl acrylate-modified chlorinated crystalline propylene homopolymer, n-acrylate
Unmodified chlorinated crystalline propylene homopolymer not graft-polymerized with butyl (intrinsic viscosity [η] is 0.70 dl /
g, a chlorine content of 30.0% by weight) except that 12 g was used to obtain an adhesive composition. An adhesion test was performed on the obtained adhesive composition in the same manner as in Example 1.

The test results of Comparative Example 1 and later are shown in Table 1 together with the test results of Example 1.

(Comparative Example 2) In Example 1, a commercially available acrylic-styrene copolymer resin-based aqueous emulsion-type adhesive was used without adding a xylene solution of n-butyl acrylate-modified chlorinated crystalline propylene homopolymer. Other than that, the adhesion test was performed in the same manner as in Example 1.

(Comparative Examples 3 and 4 and Examples 2 and 3) In Example 1, the ratio of the n-butyl acrylate-modified chlorinated crystalline propylene homopolymer to the adhesive synthetic resin component was changed as shown in the table. An adhesive composition was obtained in the same manner as above, and an adhesion test was performed.

(Comparative Example 5) In Example 1, instead of the n-butyl acrylate-modified chlorinated crystalline propylene homopolymer, the average molecular weight was
An adhesive composition was obtained in the same manner except that 4.2 g of 58,000 n-butyl acrylate homopolymer was used, and an adhesion test was performed.

(Comparative Example 6) In Example 1, n-butyl acrylate modified chlorinated crystalline propylene homopolymer was used instead of n-butyl acrylate.
Unmodified chlorinated crystalline propylene homopolymer not graft-polymerized with butyl (intrinsic viscosity [η] is 0.70 dl /
g, chlorine content 30.0% by weight) 7.8 g, and an adhesive composition was obtained in the same manner except that 4.2 g of n-butyl acrylate homopolymer having an average molecular weight of 58,000 was used, and an adhesion test was performed. Was.

Comparative Example 7 In Example 1, n-acrylic acid was used without using an acrylic-styrene copolymer resin-based aqueous emulsion adhesive.
The adhesion test was performed in the same manner except that only the xylene solution of the butyl-modified chlorinated crystalline propylene homopolymer was used as the adhesive composition.

(Comparative Example 8) In Example 1, n-butyl acrylate-modified chlorinated crystalline propylene homopolymer was not dissolved in xylene, but was pulverized using a pulverizer at a temperature of -20 ° C. -An adhesive was prepared in the same manner except that 12 g of a powder of butyl-modified chlorinated crystalline propylene homopolymer was added to and mixed with an adhesive synthetic resin emulsion obtained by adding water to an acrylic-styrene copolymer resin-based aqueous emulsion adhesive. The composition was obtained and subjected to an adhesion test.

(Comparative Examples 9 and 10 and Examples 4 and 5) An adhesive composition was prepared in the same manner as in Example 1 except that n-butyl acrylate-modified chlorinated crystalline propylene homopolymer shown in the table was used. An article was obtained and an adhesion test was performed.

Example 6 Crystalline propylene having a butene-1 content of 2.5% by weight
Chlorinated butene-1 copolymer, intrinsic viscosity [η] is 0.1.
N-butyl acrylate obtained by graft copolymerizing n-butyl acrylate and 2-ethylhexyl acrylate with a chlorinated crystalline propylene-butene-1 copolymer having 47 dl / g and a chlorine content of 22.5% by weight. 20% by weight butyl content,
And acrylate-modified chlorinated crystalline propylene having a 2-ethylhexyl acrylate content of 5.0% by weight.
8 g of butene-1 copolymer was dissolved in 150 ml of toluene. Subsequently, an acrylic / styrene copolymer resin-based aqueous emulsion adhesive (manufactured by Siden Chemical Co., Ltd., trade name: Cybinol FX)
-4, 35% by weight of resin component) 450 g of water and 50 g of water were added to the aqueous solution of the adhesive synthetic resin, and the solution obtained above was added and mixed to obtain an emulsion adhesive composition. An adhesive test was performed on the obtained adhesive composition in the same manner as in Example 1.

(Comparative Example 11) In Example 6, instead of the acrylate-modified chlorinated crystalline propylene-butene-1 copolymer, an unmodified chlorinated crystalline propylene-butene-ungrafted with an acrylate ester was used. An adhesive composition was obtained in the same manner except that 8 g of 1 copolymer (intrinsic viscosity [η] was 0.47 dl / g, chlorine content was 22.5% by weight) was used. An adhesion test was performed on the obtained adhesive composition in the same manner as in Example 6.

(Comparative Example 12) In Example 6, a commercially available acrylic-styrene copolymer resin-based aqueous emulsion adhesive was used without adding a toluene solution of an acrylate-modified chlorinated crystalline propylene-butene-1 copolymer. The adhesive test was performed in the same manner as in Example 6 except that the adhesive test was carried out as it was.

(Example 7) Instead of the n-butyl acrylate-modified chlorinated propylene homopolymer in Example 1, the intrinsic viscosity [η] was 0.1.
25 dl / g, a methyl methacrylate content obtained by graft copolymerization of methyl methacrylate and n-butyl acrylate to a chlorinated polyethylene having a chlorine content of 62.5 wt%, and a methyl methacrylate content of 25 wt% and acrylic acid n -Butyl content
An emulsion adhesive composition was obtained in the same manner except that 12 g of 15% by weight of modified chlorinated polyethylene was used, and an adhesion test was performed.

(Comparative Example 13) In Example 8, in place of the modified chlorinated polyethylene, unmodified chlorinated polyethylene not graft-polymerized with methyl methacrylate and n-butyl acrylate (having an intrinsic viscosity [η] of 0.25 dl / g, a chlorine content of 62.5% by weight) except that 12 g was used to obtain an adhesive composition and conduct an adhesion test.

2. Polypropylene injection molded piece and nylon pile 1) Test material 10 cm long, 2 cm wide, 3 mm thick polypropylene injection molded piece and 3 denier, 1 mm long nylon pile 2) Adhesion Adhesion to propylene injection molded piece agent 150 to 200 g / m ² was applied to electrostatic flocking nylon pile. Then, after drying at 80 ° C. for 30 minutes, it is left at room temperature for 24 hours.

3) Measurement of adhesion strength The flocking surface is rotated by applying a load of 200 g with a cutter, and the presence or absence of adhesive peeling from the polypropylene injection molded piece is checked.

(Example 8) As a result of applying and testing the adhesives of Examples 1 to 8 above, no peeling of the adhesive occurred. Similar results were obtained after two months had passed since the production.

[Effect of the Invention] The emulsion adhesive composition of the present invention has good storage stability, hardly decreases in adhesive strength, and does not require a complicated surface treatment step. It is possible to bring a solid-state molded product made of a conductive resin into close contact with an arbitrary material.

As is clear from the examples, the peel strength at the time of performing the adhesion test after 2 months from the production was determined by using the adhesive of the prior application when the emulsion adhesive composition of the present invention was used. It is significantly higher than those, and shows good storage stability (see Examples 1 to 9 and Comparative Examples 1, 11, and 15).

Further, when obtained under conditions outside the scope of the present invention or when an adhesive composition having a composition outside the scope of the present invention is used, storage stability is lacking, or peel strength has already been obtained in an adhesion test immediately after production. Is significantly lower (Comparative Examples 2-1
0, 12).

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takanori Kawamura 1963, Yawata Kaigandori, Ichihara-shi, Chiba 4 (72) Inventor Kazuo Ito 1-Toyota-cho, Toyota-shi, Aichi, Toyota Motor Corporation (56) Reference Document JP-A-48-102892 (JP, A) JP-A-49-59187 (JP, A) JP-A-59-49213 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) C09J 151/00-151/08 C09J 133/00-133/26

Claims (6)

(57) [Claims] 1. An emulsion adhesive composition wherein the resin component in the adhesive composition is 100 parts by weight of an adhesive synthetic resin containing an acrylic resin as a main component and a chlorine content of 10 to 70% by weight. Intrinsic viscosity [η] (measured in tetralin at 135 ° C.) Acrylate and / or methacrylate obtained by graft polymerization of acrylate and / or methacrylate onto a chlorinated polyolefin of 0.01 to 2 dl / g An emulsion adhesive composition comprising 0.05 to 40 parts by weight of a modified chlorinated polyolefin having a content of 5 to 60% by weight. 2. The chlorinated polyolefin is chlorinated polypropylene, chlorinated propylene-α-olefin copolymer,
The emulsion adhesive composition according to claim 1, which is at least one selected from chlorinated polyethylene and chlorinated ethylene-α-olefin copolymer. 3. The chlorinated polyolefin has an intrinsic viscosity [η].
The emulsion adhesive according to claim 1 or 2, which is a chlorinated crystalline propylene homopolymer and / or a chlorinated crystalline propylene-α-olefin copolymer of 0.01 to 2 dl / g (measured in tetralin at 135 ° C). Composition. 4. An aqueous emulsion containing 100 parts by weight of an adhesive synthetic resin containing an acrylic resin as a main component, and an intrinsic viscosity [η] (135) at a chlorine content of 10 to 70% by weight.
Acrylate and / or methacrylate ester content obtained by graft polymerization of acrylate and / or methacrylate to 0.01 to 2 dl / g chlorinated polyolefin.
0.05 to 40 parts by weight of a modified chlorinated polyolefin of 60% by weight,
And a solution comprising an organic solvent. 5. The chlorinated polyolefin is chlorinated polypropylene, chlorinated propylene-α-olefin copolymer,
The method for producing an emulsion adhesive composition according to claim 4, wherein the composition is at least one selected from chlorinated polyethylene and chlorinated ethylene-α-olefin copolymer. 6. The chlorinated polyolefin has an intrinsic viscosity [η].
The emulsion adhesive according to claim 4, which is a chlorinated crystalline propylene homopolymer and / or a chlorinated crystalline propylene-α-olefin copolymer of 0.01 to 2 dl / g (measured in tetralin at 135 ° C.). A method for producing the composition.