JPH04142380A - Adhesive plastisol composition - Google Patents

Abstract

PURPOSE:To obtain the title composition which enables bonding through gelation even at a relatively low temperature to give high bonding strength and has good long-term stability of viscosity by mixing a specified vinyl chloride copolymer, an inorganic filler, and a plasticizer. CONSTITUTION:The title composition is obtained by mixing a vinyl chloride copolymer containing 60-96wt.% vinyl chloride units (a), 1-20wt.% vinyl carboxylate units (b) of formula I (wherein R<1> is 1-8C alkyl), and 3-20wt.% monoalkyl maleate units (c) of formula II (wherein R<2> is 1-8C alkyl) with the weight ratio of the unit (b) to the unit (c) being at least 0.3; an inorganic filler; and a plasticizer. The composition enables bonding through gelation at a temperature as low as 10-160 deg.C, scarcely suffers bubbling and discoloration during the working thereof, gives high bonding strength, and has good long-term stability of viscosity; therefore, it can be suitably used, for example, as a sealant between metal plates, a coating material for the surface of a metal plate, etc., in the manufacture of an automobile.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention provides a novel adhesive plastisol composition, more specifically, a novel adhesive plastisol composition that is capable of gelling and adhesion even at low temperatures of about 110 to 160°C and has high adhesive strength. Furthermore, the present invention relates to a solvent-free adhesive plastisol composition which has good viscosity and stability over time and is suitable for use as a wet runt between metal plates during automobile manufacturing, or as a paint on the surface of metal plates, for example.

[Prior Art] Vinyl chloride resin plastisol is prepared by adding 2-3. A resin composition made by mixing and dispersing vinyl chloride resin powder of approximately c+m with heat stabilizers, fillers, pigments, and other compounding agents, and is suitable for mold forming such as cast molding, slush molding, and rotary molding, and knife molding. It is processed into the final molded product using spread coat molding such as coat or roll coat, or screen coating molding.
For example, it is used as a sealant between metal plates during automobile manufacturing and as a paint for the surface of metal plates.

The performance required of such a vinyl chloride resin plastisol includes, for example, good stability of viscosity over time, ability to form gelatinous adhesives at low temperatures, and high adhesive strength.

As the vinyl chloride resin, the plastisol usually contains vinyl chloride-vinyl acetate copolymer, vinyl chloride-vinyl acetate-maleic acid copolymer, vinyl chloride-vinyl acetate-
Vinyl chloride copolymers such as vinyl alcohol copolymers are used, but since these copolymers alone do not have sufficient adhesive strength, conventionally adhesion improvers such as polyamide amines and isocyanate compounds have been added to the copolymers. A commonly used method is to add it to the coalescence. However, in the method of adding polyamidoamine or incyanate compounds, (1) the viscosity of plastisol increases over time;
2) Poor adhesion to oily metal surfaces, (3) 1
If it does not gel at a high temperature of about 80-220'C, its adhesive strength will be low, so if it is used on metals that have plastic parts or chemical fiber products around them, it may deteriorate them. are doing.

Furthermore, it is known that increasing the content of carboxyl groups in a vinyl chloride copolymer improves adhesion; however, increasing the content of carboxyl groups increases foaming during molding, As a result, a problem arises in that the adhesive strength tends to fluctuate.

As a vinyl chloride resin plastisol that can be gelled and bonded at low temperatures, for example, a composition containing a vinyl chloride homopolymer or copolymer, a plasticizer, an epoxy resin, an acid anhydride, and optionally a filler or an imide compound is used. Although this plastisol can be gelled and bonded at a low temperature of about 100 to 120 degrees Celsius, it has been disclosed (Japanese Unexamined Patent Publication No. 2-18442) that the stability of the viscosity over time and the adhesive strength are not good. It's not always satisfying.

On the other hand, as an adhesive composition using a vinyl chloride copolymer, for example, (1) an aqueous synthetic resin emulsion obtained by emulsion polymerization of vinyl chloride and a specific monomer (JP-A-2-91
141 Publication), (2) Solution-type adhesive made by dissolving vinyl chloride-vinyl acetate-maleic acid copolymer, ethylene-based high molecular weight polymer, alicyclic saturated hydrocarbon resin, and thermoplastic acrylic resin in an organic solvent. agent (JP-A-62-212
(3) A solution-type adhesive containing a copolymer with an average degree of polymerization of 100 to 900 consisting of vinyl chloride units, carboxylic acid vinyl ester units, and phosphate ester units having a carbon-carbon double bond. Japanese Patent Publication No. 63-1126
(4) A solution-type adhesive composition comprising a vinyl chloride copolymer containing a phosphoric acid group, an ethylene-vinyl acetate copolymer, an adhesive resin, and an organic solvent (Japanese Patent Application Laid-open No. 75) 91141) and the like are disclosed.

However, the aqueous synthetic resin emulsion (1) above is an aqueous emulsion used as a paint for the surface and inner surface of metal cans, an aluminum outer coating agent for retort food containers, etc. Plastisol is different from plastisol, which is used as a sealant or paint on the surface of metal plates.
), 3), and 4) are all solution-type and contain organic solvents, so there are problems with human safety, air pollution, and the risk of fire and explosion. This is different from the plastisol of the present invention which does not use .

[Problems to be Solved by the Invention] Under these circumstances, the present invention solves the problem at 110 to 160°C.
The purpose of this invention is to provide a solvent-free adhesive plastisol composition that is capable of gelatinous adhesion at a relatively low temperature, has high adhesive strength, and has good viscosity stability over time.

[Means for solving the problem] As a result of intensive research to develop an adhesive plastisol composition having the above-mentioned preferable properties, the present inventors found that a specific vinyl chloride copolymer and an inorganic filler were used. It was discovered that the object could be achieved by a composition containing a plasticizer and a plasticizer, and based on this knowledge, the present invention was completed.

That is, the present invention provides (A) (a) vinyl chloride units of 60 to
96% by weight, and 1 to 20% by weight of carboxylic acid vinyl ester units represented by the formula % (1) (R' in the formula is an alkyl group having 1 to 8 carbon atoms)
and (c) - Units 3 to 20 of maleic acid monoalkyl ester represented by the formula % (R2 in the formula is an alkyl group having 1 to 8 carbon atoms)
% by weight and has a (b) unit/(c) unit weight ratio of 0.3 or more, (B) an inorganic filler, and (C) a plasticizer. The present invention provides an adhesive plastisol composition comprising:

The present invention will be explained in detail below.

In the composition of the present invention, the vinyl chloride copolymer used as component (A) consists of vinyl chloride, a carboxylic acid vinyl ester represented by the above-mentioned (I), and the above-mentioned -
) is obtained by copolymerizing maleic acid monoalkyl ester represented by: At this time, other copolymerizable monomers may be used in combination as long as the object of the present invention is not impaired.

In the carboxylic acid vinyl ester represented by the above-mentioned (I), R↓ in the formula (I) is an alkyl group having 1 to 8 carbon atoms, such as vinyl acetate,
Examples include vinyl propionate, vinyl caproate, vinyl caprylate, etc., and these may be used alone or in combination.
You may use combinations of more than one species.

In addition, in the maleic acid monoalkyl ester represented by the above-mentioned (II), R2 in the formula (U) has 1 to 8 carbon atoms.
Examples of such alkyl groups include monomethyl, monoethyl, monopropyl, monobutyl, monopentyl, monohexyl, monoheptyl, monooctyl, and monocyclohexyl esters of maleic acid. or a combination of two or more types may be used.

Further, other copolymerizable monomers that may be used as desired include, for example, acrylic acid, methacrylic acid, ethacrylic acid, maleic acid, cinnamic acid, maleic anhydride, fumaric acid, itaconic acid, and itaconic anhydride. Unsaturated monocarboxylic acids, unsaturated dicarboxylic acids and their acid anhydrides, such as 7
Unsaturated dicarboxylic acid monoalkyl esters such as maric acid monoalkyl esters and itaconic acid monoalkyl esters, unsaturated monocarboxylic acids such as methyl (meth)acrylic acid, ethinopebutinopeoctyl, cyclohexyl, and benzyl esters. Esters, unsaturated dicarbon diesters such as dimethyl, diethyl, dibrobinobedibutyl, dioctinovedicyclohexyl, and dibenzyl ester of maleic acid and fumaric acid, vinylnityls such as methyl vinyl ether, ethyl vinyl ether, and propyl vinyl ether, ethylene Examples include olefins such as , propylene, butene-1, and pentene-1, aromatic monovinyl compounds such as styrene and α-methylstyrene, vinyl cyanide compounds such as acrylonitrile and methacrylonitrile, and vinylidene chloride. These optional monomers are 1
A species may be used, or two or more species may be used in combination.

There are no particular restrictions on the method for producing the vinyl chloride copolymer of component (A), and methods commonly used for producing vinyl chloride copolymers conventionally used in plastisols, such as fine suspension polymerization and A seeded emulsion polymerization method or the like can be used.

The fine suspension polymerization method is a method in which an oil-soluble catalyst is used as a catalyst, the particle size of monomer oil droplets is adjusted in advance by homogenization treatment before the start of polymerization, and homogeneous dispersion polymerization is carried out. In such a fine suspension polymerization method, an oil-soluble radical initiator is used as a catalyst, and examples of the oil-soluble radical initiator include dibenzoyl peroxide, di-3.5.5
- Diacyl peroxides such as trimethylhexanoyl peroquinde and dilauroyl peroquinde; peroxydicarbonates such as diisobutyl peroxydicarbonate, di-5eC-butyl peroxydicarbonate, and di-2-ethylhexyl peroxydicarbonate; Un-
peroxyesters such as t-butylperoxybivalate and t-butylperoxyneodecanoate, or peroxides such as acetylcyclohexylsulfonyl peroxide and disuccinic acid peroxide, and even 2.2' Examples include azo compounds such as ~azobisisobutyronitrile, 2.2''-azobis-2-methylbutyronitrile, and 2.2'-azobisdimethylvaleronitrile.

One type of these catalysts may be used, or two or more types may be used in combination, and the amount used is appropriately selected depending on the type and amount of the monomer, the preparation method, etc. It is selected in a range of 0.001 to 5.0 parts by weight per 100 parts by weight.

Further, in the fine suspension polymerization method, a surfactant is usually used. Examples of the surfactant include alkyl sulfate salts such as sodium lauryl sulfate and sodium myristyl sulfate, alkylaryl sulfonates such as sodium dodecylbenzenesulfonate and potassium dodecylbenzenesulfonate, sodium dioctylsulfosuccinate, and dihexylsulfosuccinate. sulfosuccinate salts such as sodium chloride,
Fatty acid salts such as ammonium laurate and potassium stearate, anionic surfactants such as polyoxyethylene alkyl sulfate salts and polyoxyethylene alkylaryl sulfate salts, sorbitan monooleate, polyoxyethylene sorbitan monostearate, etc. Nonionic surfactants such as sorbitan esters, polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, and polyoxyethylene alkyl esters; cationic surfactants such as cetylpyridinium chloride and cetyltrimethylammonium bromide These may be used alone or in combination of two or more, and the amount used is usually per 100 parts by weight of the monomer used,
It is selected in the range of 0.05 to 5 parts by weight, preferably 0.2 to 4.0 parts by weight.

In this fine suspension polymerization method, the oil-soluble catalyst, monomer, surfactant, polymerization aids such as higher fatty acids and higher alcohols used as desired, and other additives are first added to an aqueous medium. Add additives and premix by homogenizing with a homogenizer to adjust the particle size of oil droplets. Examples of the homogenizer include a colloidal microvibration stirrer, a two-stage high-pressure pump, high-pressure jetting from a nozzle or Orice, and ultrasonic stirring. Furthermore, the adjustment of the particle size of oil droplets is influenced by the control of shear force during homogenization, stirring conditions during polymerization, type of reactor, amount of surfactant and additives, etc. quantity or kobi t1
You can select various conditions.

Next, the premix liquid homogenized in this way is sent to a polymerization tank, and the temperature is slowly raised while stirring, and polymerization is carried out at a temperature usually in the range of 30 to 80°C.

In this way, a latex in which vinyl chloride copolymer fine particles having a particle size of about 0.2 to 3 μm are homogeneously dispersed is obtained. This latex is usually subjected to known treatments such as salting out or spray drying, and the polymer is taken out as a solid. The molecular weight of the polymer is appropriately adjusted by adjusting the reaction temperature and molecular weight regulator depending on the purpose.

On the other hand, the seeded emulsion polymerization method uses vinyl chloride resin particles prepared in advance by conventional emulsion polymerization or milk suspension polymerization as cores.
This is a method in which an anionic surfactant or an anionic surfactant and a nonionic surfactant are used to carry out a polymerization reaction to enlarge particles in an aqueous medium. The diameter of the core particles used at this time is usually in the range of 0.03 to 0.7 μm on average, and the amount used is - + Su ■ 4 soup 1 8 convex tongue banjo ratio t φ scoop 3 hall 17 ζ
Selected within the range of 0 nursing units.

Furthermore, as the anionic surfactant, there are known ones commonly used in emulsion polymerization, such as alkylbenzene sulfonates, alkyl sulfonates, alkyl sulfate salts, fatty acid metal salts, polyoxyalkyl ether sulfate salts, and polyoxyalkyl sulfonate salts. Examples include ethylene carboxylic acid ester sulfate salt, polyoxyethylene alkyl phenyl ether sulfate salt, succinic acid dialkyl ester sulfonate salt, and these may be used alone or in combination of two or more types. .

In addition, examples of nonionic surfactants include polyoxyethylene alkylphenyl ether, polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, polyoxyethylene rubitan fatty acid ester,
Compounds having a polyoxyethylene chain in the molecule and having surface-active ability, such as polyoxyethylene alkyl ether glycerin borate, polyoxyethylene alkyl ether phosphate, polyoxyethylene, etc., and polyoxyethylene chains of the aforementioned compounds. is replaced with a copolymer of oxyethylene or oxypropylene, further examples include sorbitan fatty acid ester, fatty acid glycerin ester, glycerin fatty acid ester, pentaerythritol fatty acid ester, etc., and these may be used alone, or You may use two or more types in combination.

Regarding the usage amount of these surfactants, the anionic surfactants are usually used in the following amounts per 100 parts by weight of monomers:
The amount of the nonionic surfactant is selected in the range of 0.1 to 5 parts by weight, and the amount of the nonionic surfactant is usually selected in the range of 0 to 5 parts by weight.

In this seeded emulsion polymerization, a combination of a water-soluble reducing agent and an organic peroxide is used as a catalyst.

The water-soluble reducing agent is, for example, a reducing agent that is soluble in water and used as a normal radical redox polymerization catalyst component, such as ethylenediaminetetraacetic acid or its sodium salt or potassium salt, or a combination thereof with iron, copper, chromium, etc. Complex compounds with heavy metals, sulfinic acid or its sodium salt or potassium salt, C-ascorbic acid or its sodium salt, potassium salt, calcium salt, ferrous pyrophosphate, ferrous sulfate, ferrous ammonium sulfate, sodium sulfite ,
Examples include acidic sodium sulfite, sodium formaldehyde sulfoxylate, and reducing sugars, and these may be used alone or in combination of two or more. The amount of these reducing agents used is usually selected within the range of 0.00001 to 5 parts by weight per 100 parts by weight of the monomers used.

On the other hand, examples of organic peroxides include cumene hydroperoxide, p-cymene hydroperoxide, t-butylisopropylbenzene hydroperoxide, diisopropylbenzene hydroperoxide, p-menthane hydroperoxide, decalin hydroperoxide, and t-amyl hydroperoxide. , t-butyl hydroperoxide, and isopropyl hydroperoxide. These organic peroxides may be used alone or in combination of two or more, and the amount used is usually 0.001 to 5 parts by weight per 100 parts by weight of the monomer used. selected within the range.

Next, a preferred example of the seeded emulsion polymerization method will be described. First, an aqueous emulsion of vinyl chloride resin core particles is prepared, and then the water-soluble reducing agent and monomer are added thereto, and the mixture is heated to Maintain the temperature at about 80°C. on the other hand,
Separately, an aqueous emulsion of an organic peroxide and an aqueous surfactant solution are prepared using the above-mentioned surfactant, and these are mixed with the above-mentioned vinyl chloride resin core particles, a water-soluble reducing agent, and a monomer. For aqueous emulsions, usually 30-80°C
The polymerization reaction is carried out by continuously charging the polymer while maintaining the temperature within the range of . In addition, in this seeded emulsion polymerization, higher fatty acids, higher alcohols, inorganic salts, water-soluble polymer compounds, etc. may be used in combination to enhance the action of the surfactant and polymerization catalyst used.

After the polymerization reaction is completed, the vinyl chloride copolymer particles are taken out as a solid from the emulsion containing the produced vinyl chloride copolymer particles in the same manner as in the fine suspension polymerization method described above. The molecular weight of this copolymer is appropriately adjusted by adjusting the reaction temperature, molecular weight regulator, etc. depending on the purpose.

The vinyl chloride copolymer of component (A) thus obtained contains (a) vinyl chloride units, (b) carboxylic acid vinyl ester units, and (c) maleic acid monoalkyl ester units as essential units. The content of the (b) unit and (c) unit is in the range of 1 to 20% by weight and 3 to 20% by weight, respectively, and the (b) unit/(c) unit weight ratio is It is necessary that it is 0.3 or more.

A vinyl chloride copolymer that does not satisfy these conditions will not be able to fully achieve the object of the present invention.

The composition of the present invention needs to contain an inorganic filler as component (B). If this inorganic filler is not contained, the composition will foam during gelation and adhesion, and sufficient adhesive strength will not be obtained. The content of component (B) is t per 100 parts by weight of the vinyl chloride copolymer of component (A).
; It is preferably in the range of 30 to 500% by weight. Examples of the inorganic filler include calcium carbonate such as precipitated calcium carbonate, ground calcium carbonate, and ultrafine calcium carbonate, magnesium carbonate, silicates such as silica, talc, cane earth, clay, mica, and alumina. Can be used.

In the composition of the present invention, there are no particular restrictions on the plasticizer used as component (C), and those conventionally used as plasticizers for vinyl chloride resin plastisols, such as dimethyl phthalate, diethyl maleate, dibutyl phthalate, di( 2-ethylhexyl) phthalate, di-
n-octyl phthalate, diisobutyl phthalate, diethyl maleate, diphenyl phthalate, diindecyl phthalate, ditridecyl phthalate, diindecyl phthalate, di(hebutyno1nonyl, undecyl) phthalate, benzyl phthalate, butylbenzyl phthalate, dinonyl phthalate, dicyclohexyl phthalate phthalic acid derivatives such as dimethyl isophthalate, di(2-ethylhexyl) inphthalate, isophthalic acid derivatives such as diisooctylisophthalate, di(2-ethylhexyl) inphthalate,
-ethylhexyl)tetrahydrophthalate, di-n-
Tetrahydroheptalic acid derivatives such as octyltetrahydrophthalate and diindecyltetrahydrophthalate,
Adipic acid derivatives such as di-n-butyl adipate, di(2-ethylhexyl) adipate, diisodecyl adipate, and diisononyl adipate; azelain such as di(2-ethylhexyl) azelate, diisooctyl azelate, and di-n-hexyl azelate; acid derivatives,
Sebacic acid derivatives such as di-n-butyl sebacate and di(2-ethylhexyl)sebacate; maleic acid derivatives such as di-n-butyl maleate, dimethyl maleate, diethyl maleate, and di(2-ethylhexyl) maleate; Heptallic acid derivatives such as butyl fumarate, di(2-ethylhexyl) fumarate, tri(2-ethylhexyl) fumarate, etc.
trimellitic acid derivatives such as ethylhexyl trimellitate, triisooctyl trimellitate, triisodecyl trimellitate, triisooctyl trimellitate, tri-n-hexyl trimellitate, triisononyl trimellitate, tetra-( pyromellit rji derivatives such as 2-ethylhexyl) pyromellitate, tetra-n-octyl pyromellitate, triethyl citrate,
Citric acid derivatives such as trilobyl citrate, acetyl triethyl citrate, acetyl tri(2-ethylhexyl) citrate, monomethyl itaconate,
Monobutyl itaconate, dimethyl itaconate, diethyl itaconate, dibutyl itaconate, di(2-
Itaconic acid derivatives such as ethylhexyl itaconate, oleic acid derivatives such as butyl oleate, glyceryl monooleate, diethylene glycol monooleate, ricinoleic acid derivatives such as methyl acetyl lysyllate, butylacetyl lysyllate, glyceryl monolysyllate, diethylene glycol monolysyllate , stearic acid derivatives such as n-butyl stearate, glycerin monostearate, diethylene glycol distearate, other fatty acid derivatives such as diethylene glycol monolaurate, diethylene glycol dipelargomonoxide, pentaerythritol fatty acid ester, triethyl phosphate, tributyl phosphate , Tory (2-
phosphoric acid derivatives such as ethylhexyl) phosphate, tributoxyethyl phosphate, triphenyl phosphate, cresyl diphenyl phosphate, tricresyl phosphate, tricylenyl phosphate, tris(chloroethyl) phosphate, diethylene glycol dibenzoate, dipropylene glycol dibenzoate, Glycol derivatives such as ethylene glycol dibenzoate, triethylene glycol di(2-ethyl butyrate), triethylene glycol di(2-ethylhexoate), dibutyl methylene bisthioglycolate, glycerol monoacetate, glycerol triacetate, glycerol triacetate Glycerin derivatives such as butyrate, epoxidized soybean oil, epoxybutyl stearate, di-2-ethylhexyl epoxy hexahydrophthalate, diisodecyl epoxy hexahydrophthalate, epoxy triglyceride, epoxidized octyl oleate, epoxidized decyl oleate Examples include epoxy derivatives such as, polyester plasticizers such as adipic acid polyester, sebacic acid polyester, and phthalic acid polyester, partially hydrogenated terphenyl, and adhesive plasticizers.

These plasticizers may be used alone or in combination of two or more, and the amount thereof is usually 40 to 25 parts by weight per 100 parts by weight of the vinyl chloride copolymer (A).
It is selected in the range of 0% by weight.

The composition of the present invention includes, to the extent that it does not impair the purpose of the present invention,
Other additive components conventionally used in vinyl chloride resin plastisols can be included.

The plastisol composition of the present invention thus obtained can be gelled and bonded even at low temperatures of about 110 to 160°C,
In addition, there is no foaming during processing, and high adhesive strength is obtained.
It has good viscosity stability over time.

[Example] Next, the present invention will be explained in more detail with reference to Examples.
The present invention is not limited in any way by these examples.

Examples 1 to 5, Comparative Examples 1 to 5 Using the types of vinyl chloride resins shown in Table 1, plastisol compositions were prepared with the formulations shown in Table 1, and the adhesive strength of the composition, Storage stability, presence or absence of foaming during processing, and degree of discoloration were determined.

The results are shown in Table 1.

In addition, adhesive strength and storage stability were evaluated as follows.

(1) Adhesive Strength The composition was applied onto a 1 mm thick degreased zinc plate and heated at 140°C for 20 minutes to determine the tensile shear bonding strength and evaluate it according to the following criteria.

X: Tensile shear strength is 15 kgf/cm" or less Δ: Tensile shear strength is 25 kg1/cm" or less O; Tensile shear strength is 35 to 9 f/c or less ■: Tensile shear strength is 35 k
(2) storage stability greater than g1/cm2 After holding the composition at 23°C for 7 days, measure the viscosity at 23°C, and calculate the viscosity ratio R to the initial value using the following criteria: It was evaluated according to the following.

R is 10 or more and R is 3 or more and less than 10 R is 1.5 or more and less than 3 R is less than 1.5 [Effect of the invention] The adhesive plastisol composition of the present invention has a vinyl chloride unit and a carboxyl group as a vinyl chloride resin. A vinyl chloride copolymer containing an acid vinyl ester unit and a maleic acid monoalkyl ester unit is used, and this copolymer, an inorganic filler, and a plasticizer are contained,
Gel adhesion is possible even at low temperatures of around 60℃, there is almost no foaming or discoloration during processing, and high adhesive strength is obtained.
It has good viscosity and stability over time, and is suitably used, for example, as a sealant between metal plates during automobile manufacturing or as a paint for the surface of metal plates.

Patent applicant: Zeon Corporation

Claims (1)

[Scope of Claims] 1(A)(a) 60 to 96% by weight of vinyl chloride units, and (
b) General formula ▲ There are mathematical formulas, chemical formulas, tables, etc. C) General formula ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (R^2 in the formula is an alkyl group having 1 to 8 carbon atoms) 3 to 2 units of maleic acid monoalkyl ester
0% by weight and a vinyl chloride copolymer having a (b) unit/(c) unit weight ratio of 0.3 or more, (B) an inorganic filler, and (C) a plasticizer. An adhesive plastisol composition comprising: 2 The contents of component (B) and component (C) are as follows: (A) component 1
00 parts by weight, 30 to 500 parts by weight and 4 parts by weight, respectively.
The adhesive plastisol composition according to claim 1, which contains 0 to 250 parts by weight.