Dispersion composition

Abstract

To provide a water dispersion composition enabling formation of a coating film capable of exhibiting good adhesion to a base material and exhibiting coating film properties such as high-pressure car wash resistance and hot water resistance even when applied on a plastic base material.SOLUTION: The dispersion composition contains component A: an acid-modified chlorinated polyolefin having a degree of chlorination of 17-23 wt.% and a glass transition temperature of 0-10°C, component B: a nonionic surfactant, component C: a basic compound, and component D: an aqueous medium. The content of component B is 10 wt.% or more when component A is taken to be 100 wt.%.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a dispersion composition. More specifically, it relates to a dispersion composition containing an acid-modified chlorinated polyolefin that can exhibit good high-pressure car washability and water adhesion resistance under warm water.

Background Art

[0002] From the viewpoints of reducing environmental impact and manufacturing costs, the material of the outer panel parts of automobiles is being replaced from conventional steel plates to plastic substrates. The coating film formed on the plastic outer panel parts is required to have the same coating film performance as that required for the coating film formed on the steel outer panel.

[0003] On the other hand, plastic substrates are generally non-polar substrates with low surface free energy. When the plastic substrate has crystallinity, it is particularly difficult for the paint to adhere. Also, one of the performances required for the coating film on the outer panel parts of automobiles is high water resistance. Due to the need to cope with the accelerated test for evaluating high-pressure car washability and the need to cope with temperature changes in each season, etc., the coating film is required to have high resistance not only to normal-temperature water but also to warm water.

[0004] For example, Patent Document 1 describes that in an aqueous dispersion containing a modified polyolefin modified with a (meth)acrylate ester, when the glass transition temperature of the homopolymer of the (meth)acrylate ester is 50 to 90°C and the hydroxyl value X is 17 mgKOH / g or more and 50 mgKOH / g or less, the aqueous dispersion can exhibit good adhesion and warm water resistance and can be used as a paint and a binder for plastic substrates of automobiles.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, a coating film obtained by using an aqueous dispersion of a resin modified with a conventional (meth)acrylic acid ester such as Patent Document 1 may not exhibit a high level of adhesion and coating film physical properties required for a coating film on an outer panel. In particular, the high-pressure car washability may be insufficient.

[0007] An object of the present invention is to provide an aqueous dispersion composition capable of forming a coating film that can exhibit good adhesion to a substrate and coating film physical properties such as high-pressure car washability and hot water resistance even when applied on a plastic substrate.

Means for Solving the Problems

[0008] To solve the above problems, the present inventors intensively studied. As a result, the present inventors found that by using a composition containing an acid-modified chlorinated polyolefin resin having predetermined physical properties in the form of a dispersion, good adhesion can be exhibited and a coating film having coating film physical properties such as hot water resistance and high-pressure car washability can be formed, and thus completed the present invention.

[0009] That is, the present inventors provide the following. [1] Component A: An acid-modified chlorinated polyolefin having a chlorine content of 17 to 23% by weight and a glass transition temperature of 0 to 10°C, Component B: A nonionic surfactant, Component C: A basic compound, and Component D: An aqueous medium containing a dispersion composition in which the content of Component B is 10% by weight or more when the content of Component A is 100% by weight. [2] The dispersion composition according to [1], wherein the weight average molecular weight of the acid-modified chlorinated polyolefin is 100,000 to 150,000. [3] The dispersion composition according to [1] or [2], wherein the softening point of the acid-modified chlorinated polyolefin is 70 to 100°C. [4] The dispersion composition according to any one of [1] to [3], wherein component B contains a polyoxyethylene alkyl ether-based nonionic surfactant. [5] The dispersion composition according to any one of [1] to [4], wherein component C contains a primary amine. [6] The dispersion composition according to any one of [1] to [5], wherein component E further contains a glycol ether-based compound having a molecular weight of less than 200. [7] The dispersion composition according to any one of [1] to [6], which is a paint or a binder. [Advantages of the Invention]

[0010] According to the present invention, a dispersion composition can be provided which can exhibit excellent adhesion (adhesiveness, close adhesiveness), and when applied onto a substrate such as a plastic substrate, can form a coating film having hot water resistance and high-pressure car wash resistance. [Embodiments for Carrying Out the Invention]

[0011] Hereinafter, the present invention will be described in detail in accordance with its preferred embodiments.

[0012] [1. Composition] The composition contains components A to D, and preferably further contains component E.

[0013] [1.1 Component A: Acid-Modified Chlorinated Polyolefin] Component A is an acid-modified chlorinated polyolefin. The acid-modified chlorinated polyolefin is a modified polyolefin obtained by subjecting a raw material polyolefin to a modification treatment including acid modification and chlorination. In the present specification, a modified polyolefin obtained by a modification treatment including acid modification (regardless of whether it includes chlorination) is referred to as an acid-modified polyolefin, and a modified polyolefin obtained by a modification treatment including chlorination (regardless of whether it includes acid modification) is referred to as a chlorinated polyolefin.

[0014] (Polyolefin (raw material)) The polyolefin as the raw material is not particularly limited and may be a homopolymer of one kind of olefin or a copolymer of two or more kinds of olefins. Further, in the case of a copolymer, it may be a random copolymer or a block copolymer. As the olefin, α-olefin is preferably used. Examples of the α-olefin include ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, and 1-octene. From the viewpoint of exhibiting sufficient adhesiveness to a non-polar resin substrate such as a polypropylene substrate, the polyolefin is preferably polypropylene (propylene homopolymer), ethylene-propylene copolymer, propylene-1-butene copolymer, ethylene-propylene-1-butene copolymer, and more preferably ethylene-propylene copolymer.

[0015] In this specification, polypropylene refers to a polymer whose basic unit is a structural unit derived from propylene. Ethylene-propylene copolymer refers to a copolymer whose basic unit is a structural unit derived from ethylene and a structural unit derived from propylene. Propylene-1-butene copolymer refers to a copolymer whose basic unit is a structural unit derived from propylene and a structural unit derived from 1-butene. These polymers may contain a small amount of structural units derived from other olefins other than the above basic units. This content may be an amount that does not significantly impair the original performance of the resin. Such structural units derived from other olefins may be mixed, for example, in the process up to the production of the modified polyolefin resin.

[0016] The polyolefin preferably contains 60 mol% or more of the structural units derived from propylene in 100 mol% of the structural units. When the structural units derived from propylene are contained within the above range, adhesiveness to a substrate or a molded article such as a non-polar resin (for example, a propylene resin) can be ensured.

[0017] The ethylene-propylene copolymer and the propylene-butene copolymer may each be either a random copolymer or a block copolymer. These copolymers preferably contain, in 100 mol% of the constituent units, constituent units derived from ethylene or constituent units derived from butene in a proportion of 5 to 50 mol%, and constituent units derived from propylene in a proportion of 50 to 95 mol%.

[0018] (Method for producing polyolefin) Examples of the method for producing a polyolefin include a method using a polymerization catalyst such as a Ziegler-Natta catalyst or a metallocene catalyst, and a method using a metallocene catalyst is preferred. The polyolefin obtained using a metallocene catalyst usually has a narrow molecular weight distribution. Further, when the polyolefin is a copolymer, it usually has excellent random copolymerizability, a narrow composition distribution, and furthermore, a wide range of comonomers that can be copolymerized.

[0019] As the metallocene catalyst, known ones can be used. The metallocene catalyst is preferably obtained by combining the following components (1) and (2), and further, (3) if necessary. · Component (1); a metallocene complex which is a transition metal compound of Groups 4 to 6 of the periodic table having at least one conjugated five-membered ring ligand; · Component (2); an ion-exchangeable layered silicate; · Component (3); an organoaluminum compound.

[0020] (Melting point of polyolefin) The melting point of the polyolefin is preferably 80°C or higher and 150°C or lower, more preferably 85°C or higher and 140°C or lower.

[0021] (Weight-average molecular weight of polyolefin) The weight-average molecular weight of the polyolefin is 70,000 or more and less than 500,000, preferably 80,000 or more and less than 400,000. In this specification, the measurement of the weight-average molecular weight (Mw) can be carried out by GPC using polystyrene as a standard substance.

[0022] The polyolefin may be a single type or a combination of two or more types. In the case of a combination of two or more types, the weight ratio of each compound is not particularly limited.

[0023] (Acid modification (introduction of α,β-unsaturated carboxylic acid or its derivative)) The acid modification can be carried out by introducing an α,β-unsaturated carboxylic acid or its derivative (graft modification). Examples of the α,β-unsaturated carboxylic acid and its derivative include maleic acid, maleic anhydride, fumaric acid, citraconic acid, citraconic anhydride, mesaconic acid, itaconic acid, itaconic anhydride, aconitic acid, aconitic anhydride, hymic anhydride, (meth)acrylic acid, (meth)acrylate, N-methyl(meth)acrylamide, hydroxyethyl(meth)acrylamide, (meth)acryloylmorpholine, and combinations of two or more selected from these. Among them, α,β-unsaturated carboxylic anhydride and (meth)acrylate are preferred, and maleic anhydride is more preferred.

[0024] The α,β-unsaturated carboxylic acid and its derivative may be one or more types, and may be a combination of one or more α,β-unsaturated carboxylic acids and one or more of its derivatives, a combination of two or more α,β-unsaturated carboxylic acids, or a combination of two or more derivatives of α,β-unsaturated carboxylic acids. In the case of a combination of two or more types, the weight ratio of each is not particularly limited.

[0025] (Degree of acid modification (amount of introduction of α,β-unsaturated carboxylic acid and its derivative)) The degree of acid modification represents the amount of introduction (graft weight) of α,β-unsaturated carboxylic acid and its derivatives. The degree of acid modification is preferably 0.1% by weight or more, more preferably 0.5% by weight or more, based on 100% by weight of the unmodified polyolefin. When the graft weight is 0.1% by weight or more, the adhesion to the base material of the dispersion composition can be maintained. The upper limit is preferably 10% by weight or less, more preferably 8% by weight or less, and even more preferably 4% by weight or less. Thereby, the generation of unreacted graft substances can be prevented, and sufficient adhesion to the base material can be obtained. Therefore, the amount of introduction of α,β-unsaturated carboxylic acid and its derivatives is preferably 0.1 to 10% by weight, more preferably 0.1 to 8% by weight, and even more preferably 0.5 to 4% by weight. The amount of introduction (graft weight) of α,β-unsaturated carboxylic acid or its derivative can be measured by an alkali titration method or a Fourier transform infrared spectroscopy method.

[0026] (Method of acid modification) The acid modification is not particularly limited as long as it is a method capable of introducing α,β-unsaturated carboxylic acid or its derivative into polyolefin or chlorinated polyolefin (preferably polyolefin), and examples thereof include a melting method and a solution method. The melting method has the advantages of simple operation and the ability to react in a short time. The solution method can obtain a uniform graft polymer with fewer side reactions. The melting method is a method of heating and melting a raw material containing polyolefin, α,β-unsaturated carboxylic acid or its derivative in the presence of a radical polymerization initiator and reacting it with α,β-unsaturated carboxylic acid or its derivative. The temperature for heating and melting may be above the melting point, and is preferably above the melting point and below 300°C. When heating and melting, equipment such as a Banbury mixer, a kneader, and an extruder can be used. The solution method is a method of dissolving a raw material containing polyolefin, α,β-unsaturated carboxylic acid or its derivative in an organic solvent and then heating and stirring in the presence of a radical polymerization initiator to cause a reaction. Examples of the organic solvent include aromatic solvents such as toluene and xylene. The reaction temperature is preferably 100 to 180°C. When using two or more kinds of compounds which are α,β-unsaturated carboxylic acid and its derivatives, these may be added to the reaction system all at once or sequentially.

[0027] The radical reaction initiator can be, for example, a thermal polymerization reaction initiator that generates free radicals upon heating, and examples thereof include organic peroxide compounds and azonitriles. Examples of the organic peroxide compounds include di-tert-butyl peroxide, dicumyl peroxide, tert-butyl cumyl peroxide, dibenzoyl peroxide, benzoyl m-tolyl peroxide, di(m-tolyl)benzoyl, dilauryl peroxide, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, cumene hydroperoxide, tert-butyl hydroperoxide, 1,1-bis(tert-butylperoxy)-3,5,5-trimethylcyclohexane, 1,1-bis(tert-butylperoxy)-cyclohexane, cyclohexanone peroxide, tert-butyl peroxy-benzoate, tert-butyl peroxyoctoate, cumyl peroxyoctoate, etc. Examples of the azonitriles include 2,2-azobis(2-methylbutyronitrile), 2,2-azobisisobutyronitrile, 2,2-azobis(2,4-dimethylvaleronitrile), 2,2-azobis(4-methoxy-2,4-dimethylvaleronitrile), etc.

[0028] (Chlorination) Chlorination can be carried out by a method capable of introducing chlorine into a polyolefin or an acid-modified polyolefin (preferably an acid-modified polyolefin). When introducing chlorine, the polyolefin or acid-modified polyolefin may be dissolved in a chlorine-based solvent such as chloroform in advance. The introduction of chlorine is usually carried out by blowing chlorine gas into the reaction system. The blowing of chlorine gas may be carried out under irradiation with ultraviolet light or in the presence or absence of a radical reaction initiator. The pressure during the blowing of chlorine gas is not limited and may be normal pressure or under pressure. The temperature during the blowing of chlorine gas is not particularly limited, but is usually 50 to 140 °C. Examples of the radical reaction initiator include those exemplified as radical polymerization initiators that can be used during acid modification. The amount of the radical reaction initiator used in chlorination is preferably 0.001% by weight to 1% by weight, more preferably 0.01% by weight to 0.1% by weight, based on 100% by weight of the raw material resin. After the introduction of chlorine, the chlorine-based solvent in the system is usually distilled off under reduced pressure or replaced with an organic solvent.

[0029] (Degree of chlorination (amount of chlorine introduced)) The degree of chlorination of the acid-modified chlorinated polyolefin represents the chlorine content (graft amount of chlorine) with respect to the polyolefin before chlorination (including acid-modified polyolefin). The degree of chlorination is 17% by weight or more, preferably 18% by weight or more, 19% by weight or more, or 20% by weight or more. The upper limit is 23% by weight or less, preferably 22% by weight or less. By the degree of chlorination being within the above range, good adhesion to the substrate can be obtained. The degree of chlorination can be measured based on JIS-K7229. That is, it can be measured using the "oxygen flask combustion method" in which the chlorinated polyolefin is burned in an oxygen atmosphere, the generated gaseous chlorine is absorbed by water, and quantified by titration. The adjustment of the degree of chlorination can be carried out, for example, by the type of polyolefin resin, the scale of the chlorination reaction, the reaction apparatus used for chlorination, the blowing amount of chlorine gas, and time.

[0030] (Order of acid modification and chlorination) In the method for producing an acid-modified chlorinated polyolefin, the order of acid modification and chlorination is not particularly limited. It may be a product obtained by chlorinating an acid-modified polyolefin, or a product obtained by acid-modifying a chlorinated polyolefin, but the former is preferred.

[0031] (Other modifications) The acid-modified chlorinated polyolefin may be subjected to known modifications other than acid modification and chlorination.

[0032] (Glass transition temperature of acid-modified chlorinated polyolefin) The glass transition temperature Tg of the acid-modified chlorinated polyolefin is 0 °C or higher, preferably 1 °C or higher, 2 °C or higher, 3 °C or higher, or 4 °C or higher, and more preferably 5 °C or higher. Thereby, the adhesion of the coating film to the substrate after immersing the coating film in warm water can be improved, and the hot water resistance of the coating film can be enhanced. The upper limit is 10 °C or lower. Thereby, appropriate flexibility is imparted to the coating film, and the adhesion of the coating film to the substrate becomes good. Therefore, Tg is 0 to 10 °C, preferably 1 to 10 °C, 2 to 10 °C, 3 to 10 °C, 4 to 10 °C, and more preferably 5 to 10 °C. In this specification, the glass transition temperature can be measured in accordance with JIS-K7121-1987 using a differential scanning calorimeter (DSC measuring device).

[0033] (Weight average molecular weight of acid-modified chlorinated polyolefin) The lower limit of the weight average molecular weight of the acid-modified chlorinated polyolefin is preferably 100,000 or more, more preferably 110,000 or more, and even more preferably 120,000 or more. Thereby, the cohesive force of the obtained dispersion composition can be improved, and the adhesion to the substrate can be exhibited. The upper limit is preferably 150,000 or less, more preferably 140,000 or less, and even more preferably 130,000 or less. Thereby, the compatibility of the obtained dispersion composition with other resins and the solubility in solvents can be improved. Therefore, the weight average molecular weight is preferably 100,000 to 150,000, more preferably 110,000 to 140,000, and even more preferably 120,000 to 130,000.

[0034] (Softening Point of Acid-Modified Chlorinated Polyolefin) The softening point of the acid-modified chlorinated polyolefin is preferably 70 °C or higher, more preferably 80 °C or higher. Thereby, blocking can be suppressed when solidified. The upper limit is preferably 100 °C or lower, more preferably 95 °C or lower. Thereby, good low-temperature adhesiveness can be exhibited. In this specification, the softening point can be measured by the method of the examples.

[0035] Component A may be a single acid-modified chlorinated polyolefin or a combination of two or more acid-modified chlorinated polyolefins with different structures, production methods, etc. In the case of a combination of two or more, the weight ratio of each is not particularly limited.

[0036] [1.2 Component B: Nonionic Surfactant] Component B is a nonionic surfactant. By containing Component B in the composition, the function as an emulsifier can be exerted, and the dispersibility of Component A in Component D (aqueous medium) can be enhanced. In addition, the water resistance of the coating film can be improved, and the high-pressure car washability and hot water resistance can be further enhanced.

[0037] Examples of the nonionic surfactant include polyoxyethylene alkyl ether, polyoxyethylene alkylene alkyl ether, polyoxyethylene derivative, polyoxyethylene fatty acid ester, polyoxyethylene polyhydric alcohol fatty acid ester, polyoxyethylene propylene polyol, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyalkylene polycyclic phenyl ether, polyoxyethylene alkylamine, alkyl alkanolamide, polyalkylene glycol (meth)acrylate. Preferably, they are polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkylamine, and more preferably, polyoxyethylene alkyl ether, polyoxyethylene alkylamine.

[0038] Examples of polyoxyethylene alkyl ether nonionic surfactants include polyoxyethylene myristyl ether, polyoxyethylene oleyl ether, polyoxyethylene cetyl ether, polyoxyethylene behenyl ether, polyoxyethylene octyldodecyl ether, etc., which are polyoxyethylene alkyl ethers having an alkyl group with 10 to 30 carbon atoms, preferably 12 to 25 carbon atoms, and preferably polyoxyethylene oleyl ether.

[0039] Component B may be a single nonionic surfactant or a combination of two or more. In the case of a combination of two or more, the weight ratio of each is not particularly limited.

[0040] The content of component B in the composition is usually 10% by weight or more, preferably 15% by weight or more, more preferably 20% by weight or more, based on 100% by weight of the content of component A. Thereby, the solubility of component A can be increased, the particle diameter contained in the composition can be reduced, the stability can be improved, and the adhesion to the substrate and the coating film physical properties can be enhanced. The upper limit is usually 30% by weight or less, preferably 25% by weight or less. Thereby, the plasticity of the coating film and the bleed of the surfactant can be suppressed, and the occurrence of blocking of the coating film can be suppressed. The content of component B is usually the same as the addition amount of component C during the production of the composition.

[0041] [1.3 Component C: Basic Compound] Component C is a basic compound. By containing component C in the composition, the pH of the composition can be appropriately adjusted, and the dispersibility and storage stability of component A (acid-modified chlorinated polyolefin) in component D (aqueous medium) can be further enhanced.

[0042] Examples of the basic compound include sodium hydroxide, potassium hydroxide, ammonia, methylamine, propylamine, hexylamine, octylamine, ethanolamine, propanolamine, diethanolamine, N-methyldiethanolamine, dimethylamine, diethylamine, triethylamine, N,N-dimethylethanolamine, 2-dimethylamino-2-methyl-1-propanol, 2-amino-2-methyl-1-propanol, morpholine, dimethylethanolamine, 2-amino-2-ethyl-1,3-propanediol, etc. Preferably, primary amines such as methylamine, propylamine, hexylamine, octylamine, ethanolamine, propanolamine, 2-amino-2-methyl-1-propanol (AMP), 2-amino-2-ethyl-1,3-propanediol are mentioned, and AMP is preferred.

[0043] Component C may be a single basic compound or a combination of two or more. In the case of a combination of two or more, their respective weight ratios are not particularly limited.

[0044] The content of component C in the composition is not particularly defined, but is usually 1.0% by weight or more, preferably 2.0% by weight or more, more preferably 3.0% by weight or more, based on 100% by weight of the content of component A. Thereby, the pH of the composition can be maintained within an appropriate range. The upper limit is preferably 3.0 times the equivalent amount or less with respect to the carboxyl groups in the acid-modified chlorinated polyolefin which is component A. The content of component C is usually the same as the added amount of component C during the production of the composition.

[0045] The pH of the composition is preferably 5 or more, more preferably 6 or more. Thereby, the dispersibility of component A in component D can be good, the occurrence of precipitation and separation can be suppressed, and the storage stability can be maintained. The upper limit is usually 11 or less. Thereby, the compatibility between component C and other components and the working safety can be appropriately maintained. Therefore, the pH of the composition is preferably 5 or more, more preferably 6 - 11. The content of component C is preferably an amount such that the pH of the composition falls within the above range.

[0046] [1.4 Component D: Aqueous Medium] Component D is an aqueous medium. The aqueous medium is the dispersion medium of the composition. Examples of the aqueous medium include water and hydrophilic substances. Examples of the hydrophilic substances include hydrophilic substances of the alcohol type, ketone type, and ester type, and methanol, ethanol, isopropyl alcohol, and acetone are preferred.

[0047] Component D may be a single aqueous medium or a combination of two or more, and it is preferably at least water-containing. In the case of a combination of two or more, the weight ratio of each is not particularly limited.

[0048] The content of Component D in the composition can be expressed in terms of the solid content of the composition. The solid content of the composition is preferably 1% by weight or more, more preferably 5% by weight or more, still more preferably 10% by weight or more, and even more preferably 15% by weight or more. The upper limit is preferably 70% by weight or less, more preferably 60% by weight or less, still more preferably 50% by weight or less, and more preferably 40% by weight or less. Therefore, it is preferably 5% to 60% by weight, more preferably 10% to 50% by weight, and still more preferably 15% to 40% by weight. Thereby, good stability over time can be achieved.

[0049] [1.5 Component E: Glycol Ether Compounds] Component E is a glycol ether compound. By the composition containing Component E, it can exhibit the function as an emulsifying aid, promote the emulsifying action by Component B, and enhance the stability and coating film performance of the composition.

[0050] The molecular weight of the glycol ether compound is usually less than 200, preferably 190 or less, 180 or less, 170 or less, 160 or less, or 150 or less. Thereby, the function as an emulsifying aid can be more exerted. In this specification, the molecular weight of the glycol ether compound is the molecular weight determined from the relative atomic masses approved by the IUPAC Atomic Weight Commission (assuming 12C = 12).

[0051] Glycol ether compounds usually have a structure in which a hydrogen atom in one hydroxy group of glycols such as ethylene glycol, propylene glycol, and butylene glycol is substituted with an alkyl group. For example, the compound represented by the following general formula (I) is preferable. Since the compound represented by the general formula (I) has a hydrophobic group and a hydrophilic group in one molecule, it can further enhance the dispersibility of component A and contribute to the storage stability of the composition. C a H 2a+1 -O-(C b H 2b O) c H···(I) In the general formula (I), a to c are each independently an integer. a is usually an integer of 10 or less, preferably 8 or less, 7 or less, 6 or less, 5 or less, or 4 or less. The lower limit of a is not particularly limited, but for example, it is 1 or more. b is usually 5 or less, 4 or less, or 3 or less. The lower limit of b is not particularly limited, but for example, it is 2 or more. c is usually 5 or less, preferably 4 or less, 3 or less, or 2 or less. The lower limit of c is not particularly limited, but for example, it is 1 or more.

[0052] Examples of the compound represented by the general formula (I) include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monoisopropyl ether, ethylene glycol monobutyl ether (butyl cellosolve), ethylene glycol monoisobutyl ether, ethylene glycol mono-t-butyl ether, ethylene glycol monohexyl ether, ethylene glycol monodecyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether, etc. Among these, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether (butyl cellosolve), ethylene glycol mono-t-butyl ether, propylene glycol monomethyl ether, and propylene glycol monopropyl ether are preferred, and ethylene glycol monobutyl ether (butyl cellosolve) is more preferred.

[0053] Component E may be a single glycol ether compound or a combination of two or more. In the case of a combination of two or more, the weight ratio of each is not particularly limited.

[0054] The content of component E in the composition is usually 2.0% by weight or less. The lower limit is not particularly limited.

[0055] [1.6 Other Components] The composition may contain components other than the aforementioned components A to E as necessary. For example, stabilizers, crosslinking agents, diluents, curing agents, resin components other than component A, emulsifiers other than component B, and other additive components (e.g., lower alcohols, lower ketones, lower esters, preservatives, leveling agents, antioxidants, light stabilizers, ultraviolet absorbers, dyes, pigments, metal salts, acids), unreacted raw materials (e.g., α,β-unsaturated carboxylic acids or their derivatives, polyolefins, chlorine).

[0056] (Stabilizer) Examples of the stabilizer include epoxy stabilizers (compounds containing epoxy groups). Examples of epoxy stabilizers include epoxy compounds having an epoxy equivalent of about 100 to 500 and containing one or more epoxy groups in one molecule. More specifically, for example, epoxidized soybean oil and epoxidized linseed oil obtained by epoxidizing vegetable oils having natural unsaturated groups with peracids such as peracetic acid; epoxidized fatty acid esters obtained by epoxidizing unsaturated fatty acids such as oleic acid, tall oil fatty acid, and soybean oil fatty acid; epoxy alicyclic compounds represented by epoxidized tetrahydrophthalate; condensation products of bisphenol A or polyhydric alcohol and epichlorohydrin, such as bisphenol A glycidyl ether, ethylene glycol glycidyl ether, propylene glycol glycidyl ether, glycerol polyglycidyl ether, sorbitol polyglycidyl ether; monoepoxy compounds represented by butyl glycidyl ether, 2-ethylhexyl glycidyl ether, decyl glycidyl ether, stearyl glycidyl ether, allyl glycidyl ether, phenyl glycidyl ether, sec-butylphenyl glycidyl ether, tert-butylphenyl glycidyl ether, phenol polyethylene oxide glycidyl ether, etc.

[0057] The stabilizer may also be a compound not containing an epoxy group. Examples include metal soaps such as calcium stearate and lead stearate; organometallic compounds such as dibutyltin dilaurate and dibutyl maleate; hydrotalcite compounds; oxetane compounds, etc.

[0058] (Other resin components) Examples of the resin component other than Component A include resins such as urethane resin, epoxy resin, acrylic resin, phenolic resin, alkyd resin, polyamide resin, polyimide resin, silicone resin, and nitrocellulose, and combinations of two or more of these. These resins may be incorporated into the composition as aqueous products (e.g., aqueous acrylic resin, aqueous polyurethane resin). The ratio of the content of Component A to the other resin component (total amount when there are two or more other resins) is, in terms of solids, Component A: other resin component = 1 to 99: 99 to 1, preferably 10 to 90: 90 to 10, more preferably 20 to 80: 80 to 20, still more preferably 30 to 70: 70 to 30.

[0059] Examples of the crosslinking agent include blocked isocyanate compounds, aliphatic or aromatic epoxy compounds, amine compounds, and amino resins. By adding the crosslinking agent, it reacts with groups such as hydroxyl groups, carboxyl groups, and amino groups contained in the components constituting the composition such as Components A to C, and forms a crosslinked structure.

[0060] [1.7 Physical properties of the composition] The composition has a dispersion form in which the solid components such as Components A to C are dispersed in Component D. (Average particle size) In the composition, the solid components such as Component A are usually present dispersed in Component D as particles. The average particle size of the particles is preferably 300 nm or less, more preferably 200 nm or less. If it is 300 nm or less, the storage stability and compatibility of the composition can be maintained, but if it exceeds 300 nm, the adhesion to the substrate and the coating film physical properties may deteriorate. The average particle size can be adjusted by the content and type of each component in the composition and the dispersion conditions (e.g., stirring force, stirring time) when preparing the composition. The average particle size can be obtained by measuring the particle size distribution using the light scattering method.

[0061] [2. Manufacturing method of the composition] The method for manufacturing the composition is not particularly limited. For example, a method including at least a dispersion step of adding and mixing Components A to D and dispersing Component A in Component D can be mentioned. Each component may be added all at once or sequentially, but it is preferable to add Component C after adding Components A and B into the system and finally add Component D. According to one aspect, Components A and B are dissolved (preferably under heating conditions) in an organic solvent (for example, aromatic hydrocarbon solvents such as toluene, o-xylene, m-xylene, p-xylene, ethylbenzene, etc.) together with a stabilizer if necessary, then Component C is added, and then Component D (preferably warm water) is added. The added organic solvent can be distilled off after adding Component D. When the composition contains other resin components, it is preferable to blend the resin components after the above dispersion step. For example, after the dispersion step, a resin component blending step may be performed to blend the resin components and adjust the solid content as necessary (for example, adding a dispersion medium for dilution).

[0062] [3. Use of the Composition] The composition has good adhesion to substrates that are difficult to coat such as paints, for example, non-polar plastic substrates (for example, polyolefin-based substrates such as polypropylene and ABS substrates), and can form a coating film with excellent hot water resistance, so it can be used as a paint, ink, adhesive, and binder for these, and among them, it is useful as a material for automobile painting (for example, paint, binder).

Examples

[0063] Hereinafter, the present invention will be described in detail with reference to examples. The following examples are for preferably explaining the present invention and do not limit the present invention. The measurement method of physical properties is the measurement method described below unless otherwise specified. Unless otherwise specified, parts and % indicate parts by weight and % by weight, and the numerical range is described as including its endpoints.

[0064] [Measurement Method of Physical Properties]: The graft amount of the acid component, degree of chlorination (graft amount of chlorine), glass transition temperature, weight average molecular weight (Mw), and softening point were measured using acid-modified chlorinated polyolefin. The details of the measurement method are shown below.

[0065] (Degree of acid modification (wt%)) Measurement was carried out and calculated by the alkali titration method according to the method specified in JIS-K0070:1992.

[0066] (Degree of chlorination (wt%)) Measurement was carried out according to the method specified in JIS-K7229:1995.

[0067] (Glass transition temperature (°C)) Approximately 5 g of the sample sealed in an aluminum pan (manufactured by TA Instruments Co., Ltd.) was set in a DSC measuring device (TA Instruments, DISCOVERY DSC2500), cooled to -50°C at -10°C / min, and then held for 5 minutes. Next, after heating to 150°C at 10°C / min, it was held for 5 minutes. This cooling and heating cycle was performed twice to obtain a DSC curve. Next, in accordance with JIS-K7121-1987, extension lines (straight line 1) were drawn on the low-temperature side baseline and extension lines (straight line 2) were drawn on the high-temperature side baseline of the DSC curve. Further, a straight line (straight line 3) parallel to the two straight lines was drawn in the middle of straight lines 1 and 2, and the temperature of the intersection of the stepped change curve of the glass transition and straight line 3 was taken as the glass transition temperature (°C) of the sample.

[0068] (Weight average molecular weight (Mw)) For the resin produced in the production example, measurement was carried out by GPC according to the following conditions. Apparatus: HLC-8320GPC (manufactured by Tosoh Corporation) Columns: TSK-gel G-6000HXL, G-5000HXL, G-4000HXL, G-3000HXL, G-2000HXL (manufactured by Tosoh Corporation) Eluent: Tetrahydrofuran Flow rate: 1 mL / min Temperature: Pump oven, column oven 40°C Injection volume: 100 μL Standard substance: Polystyrene EasiCal PS-1 (manufactured by Agilent Technology Co., Ltd.)

[0069] [Softening point (°C)] A resin piece obtained by drying the sample at 40 °C was heated on a temperature-controlled stage at 3.5 °C per minute, and the change in the shape of the sample (melting state) was observed with a microscope. The temperature at which the sample started to melt and was completely melted was evaluated as the softening point temperature.

[0070] [Tm (melting point, °C)]: In accordance with JIS K7121-1987, using a DSC measuring device (manufactured by TA Instruments), about 5 mg of the sample was heated and melted at 150 °C for 10 minutes and maintained in the molten state. Then, the temperature was decreased at a rate of 10 °C / min and stably maintained at -50 °C. Thereafter, the temperature was increased to 150 °C at 10 °C / min, and the melting peak temperature at the time of melting was taken as Tm.

[0071] [Production Example 1: Acid-modified chlorinated propylene-ethylene copolymer a] (1) Maleinization 100 parts of a polyolefin resin (propylene-ethylene copolymer, 97.0 mol% of propylene units, 3.0 mol% of ethylene units, Tm = 125 °C, weight average molecular weight 315,000) with a melt mass flow rate of 0.24 g / min (measured according to JIS K7210-1), 2.5 parts of maleic anhydride, and 0.5 part of di-tert-butyl peroxide were premixed with a stirrer and heat-kneaded at 175 °C using a co-rotating twin-screw extruder to obtain an acid-modified propylene-ethylene copolymer. The graft weight of maleic anhydride in the obtained acid-modified propylene-ethylene copolymer was 1.2% by weight, and Tm was 122 °C (Table 1).

[0072] (2) Chlorination 1,200 kg of the acid-modified propylene-ethylene copolymer obtained by the above maleinization reaction was charged into a glass-lined reaction kettle, 8,700 L of chloroform was added, and after being sufficiently dissolved at a temperature of 115 °C under a pressure of 0.4 MPa, 1,160 g of the radical reaction initiator tert-butyl peroxy octoate was added. While controlling the pressure in the kettle at 0.4 MPa, gaseous chlorine was blown into the reaction kettle to carry out the chlorination reaction, and a reaction solution containing a chlorinated acid-modified propylene-ethylene copolymer with a chlorination degree of 20.0% was obtained. Next, an epoxy compound was added as a stabilizer, and a vented twin-screw extruder equipped with a vent port for distilling off the reaction solvent under reduced pressure was used to remove chloroform, and the resulting composition was extruded into strands and cooled with water. Then, it was pelletized with a water-cooled pelletizer to obtain an acid-modified chlorinated propylene-ethylene copolymer a (solid). As a result of analyzing the obtained copolymer a by gel permeation chromatography (GPC; HLC8320GPC, manufactured by Tosoh Corporation), the weight average molecular weight (Mw) was 130,000, the glass transition temperature was 5 °C, and the softening point was 80 to 95 °C (Table 1).

[0073] [Production Example 2: Production of acid-modified chlorinated propylene-ethylene copolymer b] A reaction solution containing a chlorinated acid-modified propylene-ethylene copolymer (Component A) with a chlorination degree of 22.0% by weight was obtained in the same manner as in Production Example 1 except that the chlorine blowing time (blowing amount) was extended from Production Example 1. Next, an epoxy compound was added as a stabilizer, and a vented twin-screw extruder equipped with a vent port for distilling off the reaction solvent under reduced pressure was used to remove chloroform, and the resulting composition was extruded into strands and cooled with water. Then, it was pelletized with a water-cooled pelletizer to obtain an acid-modified chlorinated propylene-ethylene copolymer b (solid). As a result of analyzing the obtained copolymer b by gel permeation chromatography (GPC; HLC8320GPC, manufactured by Tosoh Corporation), the weight average molecular weight (Mw) was 130,000, the glass transition temperature was 10 °C, and the softening point was 70 to 85 °C.

[0074] [Production Example 3: Production of acid-modified chlorinated propylene-ethylene copolymer c] A reaction solution containing a chlorinated acid-modified propylene-ethylene copolymer (Component A) with a chlorine content of 15.5% by weight was obtained in the same manner as in Production Example 1, except that the chlorine blowing time (blowing amount) was shortened from Production Example 1. Next, an epoxy compound was added as a stabilizer, and chloroform was removed using a twin-screw extruder with a vent equipped with a vent port for distilling off the reaction solvent under reduced pressure. The resulting composition was extruded into strands and cooled with water. Then, it was pelletized using a water-cooled pelletizer to obtain an acid-modified chlorinated propylene-ethylene copolymer c (solid). As a result of analyzing the obtained copolymer c by gel permeation chromatography (GPC; HLC8320GPC, manufactured by Tosoh Corporation), the weight average molecular weight (Mw) was 130,000, the glass transition temperature was 0°C, and the softening point was 90 to 100°C (Table 1).

[0075] [Production Example 4: Production of acid-modified chlorinated propylene-ethylene copolymer d] (1) Maleinization 100 parts of a polyolefin resin (propylene-ethylene copolymer, 97.0 mol% of propylene units, 3.0 mol% of ethylene units, Tm = 125°C, weight average molecular weight 315,000) with a melt mass flow rate of 0.24 g / min (measured according to JIS K7210-1), 4.0 parts of maleic anhydride, and 3.0 parts of di-tert-butyl peroxide were premixed with a stirrer and heat-kneaded at 200 to 210°C using a co-rotating twin-screw extruder to obtain an acid-modified propylene-ethylene copolymer. The graft weight of maleic anhydride in the obtained acid-modified propylene-ethylene copolymer was 2.5% by weight, and Tm was 122°C (Table 1). (2) Chlorination 1,350 kg of the acid-modified propylene-ethylene copolymer obtained from the above maleinization reaction was charged into a glass-lined reaction kettle, 9,000 L of chloroform was added, and after being sufficiently dissolved at a temperature of 115 °C under a pressure of 0.4 MPa, 1,310 g of the radical initiator tert-butyl peroxy octoate was added, and gaseous chlorine was blown into the reaction kettle while controlling the pressure in the kettle at 0.4 MPa to conduct a chlorination reaction, and a reaction solution containing a chlorinated acid-modified propylene-ethylene copolymer with a chlorination degree of 25.0% was obtained. Next, the evaporator was used for distillation under reduced pressure to concentrate the reaction solution, and then an epoxy compound was added as a stabilizer. Thereafter, while adding toluene to the concentrated solution, distillation under reduced pressure was carried out, and after the recovered solvent reached a predetermined specific gravity, the solvent substitution was stopped. Toluene, cyclohexane and 1-butanol were added to the obtained substitution solution and adjusted to a predetermined solvent composition (toluene / cyclohexane / 1-butanol = 89.9 / 10 / 0.1) to obtain an acid-modified chlorinated propylene-ethylene copolymer c (20.0% solution). As a result of analysis of copolymer c by gel permeation chromatography (GPC; HLC8320GPC, manufactured by Tosoh Corporation), the weight average molecular weight (Mw) was 80,000, the glass transition temperature was 15 °C, and the softening point was 65 to 75 °C (Table 1).

[0076]

Table 1

[0077] [Example 1] Into a 3 L four-necked flask equipped with a stirrer, a cooling tube, and a dropping funnel, 200 g of Component A: acid-modified chlorinated propylene-ethylene copolymer a obtained in Production Example 1, 42 g of Component B: nonionic surfactant (polyoxyethylene oleyl ether), 7 g of stabilizer Denacol EX-146 (para-tert-butylphenyl glycidyl ether, manufactured by Nagase ChemteX Corporation) (3.5 parts by weight based on 100 parts by weight of Component A), and 150 g of toluene were added and kneaded at 100 °C for 40 minutes. Next, 3.4 g of Component C: basic compound 2-amino-2-methyl-1-propanol 90% aqueous solution (AMP-90, manufactured by Dow Chemical Company) was added and held for 30 minutes, and then Component D: warm water at 90 °C was added over about 2 hours. Thereafter, a vacuum treatment was performed to remove toluene, and then it was cooled while stirring to room temperature to obtain an aqueous dispersion 1 of acid-modified chlorinated propylene-ethylene copolymer a.

[0078] [Example 2] The same operations as in Example 1 were carried out except that 16 g of Component E: butyl cellosolve was added together with toluene in addition to Components A to C used in the emulsification step, to obtain an aqueous dispersion 2 of acid-modified chlorinated propylene-ethylene copolymer a.

[0079] [Example 3] Component B used in the emulsification step was changed to 20 g of nonionic surfactant (polyoxyethylene alkyl ether), Component C was changed to 5.6 g, toluene was changed to 100 g, and Component E was changed to 100 g. Further, after adding Component D, a cooling treatment was performed to 40 °C. Otherwise, the same operations as in Example 1 were carried out to obtain an aqueous dispersion 3 of acid-modified chlorinated propylene-ethylene copolymer a of Example 3.

[0080] [Example 4] Component B used in the emulsification step was changed to 42 g of nonionic surfactant (polyoxyethylene oleylamine), Component C was changed to 5.6 g, toluene was changed to 120 g, and Component E was changed to 30 g. Also, Component B was added at 80 °C after adding Component C and holding for 30 minutes. Otherwise, the same operations as in Example 1 were carried out to obtain an aqueous dispersion 4 of acid-modified chlorinated propylene-ethylene copolymer a of Example 4.

[0081] [Example 5] In the emulsification step, Component B used was changed to 30 g of a nonionic surfactant (polyoxyethylene oleylamine), Component C was changed to 5.6 g, toluene was changed to 120 g, and Component E was changed to 70 g. Also, Component C was added to Component B, held for 30 minutes, and then added at 80°C. Further, after adding Component D, a cooling treatment was performed until the temperature reached 40°C. Otherwise, the same operations as in Example 1 were carried out to obtain an aqueous dispersion 5 of an acid-modified chlorinated propylene-ethylene copolymer a of Example 5.

[0082] [Example 6] In the emulsification step, Component A used was changed to the acid-modified chlorinated propylene-ethylene copolymer b obtained in Production Example 2, and further Component C was changed to 5.6 g, toluene was changed to 120 g, and Component E was changed to 70 g. Also, after adding Component D, a cooling treatment was performed until the temperature reached 40°C. Otherwise, the same operations as in Example 1 were carried out to obtain an aqueous dispersion 6 of an acid-modified chlorinated propylene-ethylene copolymer b of Example 6.

[0083] [Comparative Example 1] The same operations as in Example 1 were carried out except that Component A used in the emulsification step was changed to the acid-modified chlorinated propylene-ethylene copolymer c obtained in Production Example 3 to obtain an aqueous dispersion 7 of the acid-modified chlorinated propylene-ethylene copolymer c.

[0084] [Comparative Example 2] Component A used in the emulsification step was changed to 600 g of an acid-modified chlorinated propylene-ethylene copolymer d (20.0% solution), and under a reduced pressure at a temperature of 100°C, a solvent such as toluene was removed. Thereafter, 25.2 g of Component B: nonionic surfactant (polyoxyethylene oleyl ether), 4.2 g of stabilizer Denacol EX-146 (3.5 parts by weight with respect to 100 parts by weight of Component A), 72 g of toluene, and 24 g of Component E were added and kneaded at 100°C for 40 minutes. Next, 4.8 g of Component C was added, held for 30 minutes, and then Component D at 90°C was added over about 2 hours. Thereafter, a reduced pressure treatment was performed, toluene and Component E were removed, and then cooled while stirring to room temperature to obtain an aqueous dispersion 8 of the acid-modified chlorinated propylene-ethylene copolymer d.

[0085] Using the aqueous dispersions 1 to 8 obtained in Examples 1 to 6 and Comparative Examples 1 and 2, the following tests were conducted. The results are shown in Table 2.

[0086] In order to simply evaluate the high-pressure car washability, as a more severe test than the normal cross-cut peel test, a cross-cut peel test with diagonal cuts immediately after heating (hereinafter referred to as the diagonal cross-cut peel test) was conducted.

[0087] [Evaluation of Diagonal Cross-Cut Peel Test (High-Pressure Car Washability)] (Preparation of Test Plate) The surface of the ultra-high rigidity polypropylene plate was degreased with isopropyl alcohol, and the aqueous dispersion compositions obtained in Examples 1 to 6 and Comparative Examples 1 and 2 were each coated with an air-type spray gun so that the dry film thickness was about 10 ± 3 μm, and preheated at 80°C for 3 minutes. Next, a solvent-based base coat paint was applied so that the dry film thickness was about 20 μm, allowed to stand at room temperature for about 10 minutes, and then an acrylic urethane-based solvent-type clear coat paint was applied so that the dry film thickness was about 25 to 30 μm, and allowed to stand at room temperature for about 10 minutes. Thereafter, a baking treatment was performed at 100°C for 30 minutes, and the test plate was prepared by allowing it to stand at room temperature for 72 hours.

[0088] After immersing the test plate in warm water at 60°C for 30 minutes, the test plate was taken out. Immediately thereafter, 25 cross-cut cuts reaching the coating film surface at an angle of 45 degrees with respect to the coating film were made at intervals of 2 mm using a cutter knife, and a cellophane adhesive tape was adhered thereon and peeled 10 times at 180 degrees, and the peeling state of the coating film was evaluated according to the following criteria of [◎], [〇], [△], and [×]. ◎: No peeling occurs in any of the grid squares. 〇: Slight peeling occurs at the cut portion. △: Slight peeling occurs at the cut portion and the corners are chipped. ×: Peeling has occurred in the grid squares.

[0089] [Evaluation of Hot Water Resistance Test] (Preparation of Test Plate) The surface of the ultra-high rigidity polypropylene plate was degreased with isopropyl alcohol, and a mixture with a blending ratio (by weight) of 1:1 of the aqueous dispersion compositions obtained in Examples 1 to 6 and Comparative Examples 1 and 2 and a urethane emulsion (manufactured by Sanyo Chemical Industries, Ltd., UWS-145) was applied with an air spray gun so that the dry film thickness would be approximately 10 ± 3 μm, and preheating was performed at 80°C for 3 minutes. Next, a solvent-based base coat paint was applied so that the dry film thickness would be approximately 20 μm, and after standing at room temperature for about 10 minutes, an acrylic urethane-based solvent-type clear paint was applied so that the dry film thickness would be approximately 25 to 30 μm, and it was left standing at room temperature for about 10 minutes. Then, a baking treatment was performed at 100°C for 30 minutes, and the test plates were prepared by standing at room temperature for 72 hours.

[0090] The prepared test plates were immersed in warm water at 60°C for 10 days, then immersed in water at 23°C for 1 hour, and then the swelling state (blister) of the coating film was visually observed. Then, 100 grid-like cuts reaching the substrate at 2 mm intervals were made on the coating film with a cutter knife, and after sticking cellophane adhesive tape on it, it was peeled 10 times at an angle of 180 degrees, and the adhesion of the hot water resistance test was evaluated according to the following criteria of [◎], [〇], [△], [×]. ◎: Remaining squares are 100 - 90 〇: Remaining squares are 89 - 80 △: Remaining squares are 79 - 60 ×: Remaining squares are 59 or less

[0091] Also, the evaluation of blisters was determined based on the following criteria. Diameter: (Large) 1 - 10 (Small) Frequency: None, (Few) F, M, MD, D (Many) Note that the diameter refers to the size of the blister, and the numerical value that can be visually confirmed is up to 8. Also, the frequency refers to the number of blisters, which is the abbreviation of F (Few), M (Medium), MD (Medium Dense), D (Dense). For example, "4M" represents a blister diameter of 4 and a blister frequency of M.

[0092]

Table 2

[0093] Regarding the evaluation of the diagonal checkerboard peeling test, the results of Examples 1 to 6 show a tendency to exhibit adhesion that is equal to or better than that of Comparative Examples 1 and 2. Among them, it can be seen that Examples 2, 4, and 5 exhibit excellent adhesion. Also, regarding the evaluation of the hot water resistance test, although blisters are generated in all cases except for Example 2, it can be seen that the degree of blistering in Examples 1, 3, and 6 is lower than that in Comparative Examples 1 and 2. Moreover, all of Examples 1 to 6 showed results of exhibiting adhesion superior to that of Comparative Examples 1 and 2. Judging comprehensively from these results, the composition of the present invention exhibits excellent adhesion and can form a coating film having high-pressure car washability and hot water resistance.

Claims

1. Component A: An acid-modified chlorinated polyolefin having a chlorine content of 17 to 23% by weight and a glass transition temperature of 0 to 10°C, Component B: A nonionic surfactant, Component C: A basic compound, and Component D: An aqueous medium are included, and the content of Component B is 10% by weight or more when the content of Component A is 100% by weight. A dispersion composition.

2. The dispersion composition according to Claim 1, wherein the weight average molecular weight of the acid-modified chlorinated polyolefin is 100,000 to 150,000.

3. The dispersion composition according to Claim 1 or 2, wherein the softening point of the acid-modified chlorinated polyolefin is 70 to 100°C.

4. The dispersion composition according to Claim 1 or 2, wherein Component B contains a nonionic surfactant of the polyoxyethylene alkyl ether type.

5. The dispersion composition according to Claim 1 or 2, wherein Component C contains a primary amine.

6. The dispersion composition according to Claim 1 or 2, further comprising Component E: A glycol ether-based compound having a molecular weight of less than 200.

7. The dispersion composition according to Claim 1 or 2, which is a paint or a binder for paint.

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