JPH0428779A - water-based paint composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an aqueous coating composition, and more specifically,
This invention relates to a water-based coating composition that has excellent weather resistance, stain resistance, and wet adhesion.

(Prior art) Paints containing a large amount of aromatic organic solvents have been widely used in the past, but in recent years they have been replaced by synthetic resin emulsion paints that do not use solvents from the viewpoint of air pollution and resource conservation. .

However, emulsion paints that do not generally use solvents
For example, polymerizable monomers of α, β-ethylenically unsaturated acids such as acrylic acid and methacrylic acid and acrylic esters such as bovine sil or methacrylic esters such as methyl methacrylate to butyl acrylate and 2-ethyl acrylate. Coatings obtained from coatings using as a vehicle an emulsion polymer composition obtained by emulsion polymerization of is insufficient;
In particular, it had the disadvantage that its adhesion to chalky surfaces and its wet adhesion to objects to be coated were extremely poor.

Various studies have been carried out to improve these drawbacks, and among these, water-based paints in which oil-modified alkyd resins are mixed with synthetic resin emulsions are well known.

Compounds called wet adhesion aids are also known for improving wet adhesion when producing synthetic resin emulsions.

As wet adhesion aids, aminoalkyl (meth)acrylates, especially dimethylaminoethyl methacrylate,
Examples include t-butylaminoethyl methacrylate and ethylenically unsaturated monomers having an alkylene urea group or an alkylene urethane group.

(Problem to be solved by the invention) However, in the case of water-based paints in which oil-modified alkyd resin is mixed with synthetic resin emulsion, wet adhesion to chalky surfaces and objects to be painted is improved; When mixed with a synthetic resin emulsion, weather resistance is poor due to the dispersant and emulsifier used, and furthermore, since alkyd resin is used, stain resistance is poor in the early drying stage after painting.

In addition, in the case of water-based paint compositions in which the vehicle is an emulsion polymer composition obtained by emulsion polymerization of a wet adhesion aid, the wet adhesion of the paint film is certainly improved, or the weather resistance is thought to be due to the emulsifier. Problems of poor durability and stain resistance occur.

Generally, as mentioned above, wet adhesion aids contain amino groups in their molecules and have strong cationic properties, so the types of emulsifiers that can be used during emulsion polymerization are limited, and stable emulsions cannot be obtained unless used in large quantities. This is because it is difficult to get caught. For this reason,
In the paint field, the applications for which these compositions can be used have been limited.

Therefore, there has been a long-awaited development of an aqueous coating composition that has weather resistance, stain resistance, and wet adhesion.

(Means for Solving the Problems) As a result of intensive research aimed at solving the above problems, the present inventors have completed the present invention.

That is, the present invention is capable of copolymerizing <C> with a cyclic urea compound (A), an α,β-ethylenically unsaturated acid (B), and an amide of α,β-ethylenically unsaturated acid (C). This is an aqueous coating composition characterized by using as a vehicle an emulsion polymer composition obtained by emulsion polymerization with other α,β-ethylenically unsaturated monomers.

The cyclic urea compound (A) used in the present invention may have various structures, such as N'-methylol-N, N'-ethyleneurea, N'-methylol-N, N'- n-propylene urea, N'-methylol-
N, N'-1so-propylene urea, dimethylol-N, N'-ethylene urea, dimethylol-N,
N'-n-propylene urea, dimethylol-N,
N''-jso-propylene urea (group 1 above), N, N
'-ethylene urea, N, N'-n-propylene urea,
N, N'1SO-propylene urine L N'-hydroxy-N.

N'-n-propylene urea, N'-hydroxy-N,
N'-ethyleneurea, N'-hydroxy-N
.

Examples include N'-1so-propylene urea (group n).

The amount of the cyclic urea compound to be used is 0.00 parts by weight per 100 parts by weight of α, β-unsaturated monomer. 1 to 10 parts by weight is preferred. When the amount is less than 0.1 part by weight, no significant effect of improving wet adhesion is observed. On the other hand, if it exceeds 1,000 parts by weight, a decrease in weather resistance and stain resistance is observed.

α,β-ethylenically unsaturated acid (B) used in the present invention
may include those of various structures, such as acrylic acid,
Examples include methacrylic acid, maleic acid or its half ester compound, fumaric acid or its half ester compound, itafonic acid or its half ester compound, crotonic acid and the like.

In order for the aqueous coating composition of the present invention to have wet adhesion, it is essential to use an α,β-ethylenically unsaturated acid, but the amount used has a great influence. The amount used is 0 parts by weight per 100 parts by weight of α, β-unsaturated monomer.
．． 1 to 10 parts by weight, preferably 0.2 to 5 parts by weight, is suitable.

If it is less than 0.1 part by weight, the wet adhesion will not be sufficient;
When the amount exceeds 0 parts by weight, wet adhesion is improved, but weather resistance and stain resistance are impaired.

It is not clear why α,β-ethylenically unsaturated acids contribute to improved wet adhesion, but cyclic urea compounds and α,β
-It is thought to play a catalytic role in enhancing the interaction of ethylenically unsaturated acids with amides.

The α,β-ethylenically unsaturated acid amides (C) used in the present invention may include those of various structures, and include, for example, acrylamide, methacrylamide, N-methylacrylamide, N-methylmethacrylamide, N, ,
N-dimethylacrylamide, N, N-dimethylmethacrylamide, maleic acid amide, fumaric acid amide, diacetone acrylamide, diacetone methacrylamide (group Ⅰ above), N-methylol acrylamide, N-methylol methacrylamide, N, N- Examples include dimethylol acrylamide, N, N-dimethylol methacrylamide, dimethylol itaconamide, dimethylol maleic acid amide, and dimethylol fumaric acid amide (Group 1 above).

The amount of α,β-ethylenically unsaturated acid amide used to obtain the aqueous coating composition of the present invention is α.

0.2 to 10 parts by weight of β-unsaturated monomer
．． 0 parts by weight is preferred. When the amount is less than 0.2 parts by weight, no significant effect of improving wet adhesion is observed. on the other hand,
When the amount exceeds 10.0 parts by weight, a decrease in weather resistance and stain resistance is observed.

The aqueous coating composition of the present invention has the characteristic property of improved wet adhesion to chalked surfaces and objects to be coated without impairing weather resistance and stain resistance. In order to further improve this characteristic property, as a cyclic urea compound,
N''-methylol-N, N'-ethyleneurea, N
”-Methylol-N.

N'-n-propylene Ifl, N'-methylol N
, N'-1so-propylene urea, dimethylol-N,
N'-ethylene urea, dimethylol-N.

N'-n-propylene urea, dimethylol-N.

When N-methylol type compounds (group 1) such as N'-1so-propylene urea are used, α.

Amides of β-ethylenically unsaturated acids include acrylamide, methacrylamide, N-methylacrylamide,
N-Methyl methacrylamide N.

It is preferable to use non-methylol type compounds (group 1) such as N-dimethylacrylamide, N,N'-dimethylmethacrylamide, maleic acid amide, fumaric acid amide, diacetone acrylamide, and tiacetone methacrylamide.

On the other hand, as a cyclic urea compound, N,N'-xfrenurea, N,N'-n-propyleneurea, N, N-i
so-furopylene urine i, N'-hydroxy-N, N''
-Ethyleneurea Nl -Hydrocarbon N,N'-n-
Propylene urea, N''-hydroxy-N, N'-
When non-N-methylol type compounds (group ■) such as 1so-propylene urea are used, the amides of α,β-ethylenically unsaturated acids include N-methylol acrylamide, N-methylolmethacrylamide, N , N-dimethylol acrylamide, N, N-dimethylol methacrylamide, dimethylol itaconamide, dimethylol maleic acid amide, dimethylol fumaric acid amide and the like are particularly preferably used.

In this way, when an N-methylol type compound is used as the cyclized urea compound, when a non-methylol type compound is used as the amide of α,β-ethylenically unsaturated acid, on the other hand, when the cyclized urea compound When a non-N-methylol type compound is used as an amide of an α,β-ethylenically unsaturated acid, a methylol type compound is used as an amide of an α,β-ethylenically unsaturated acid to prevent chalking of the surface without impairing weather resistance and stain resistance. It further improves wet adhesion to paint and objects to be coated.

The reason is not clear, but when this molecular structure is adopted, amides of cyclic urea compounds and α,β-ethylenically unsaturated acids are formed by the catalytic action of α,β-ethylenically unsaturated acids. This is thought to be due to the increased interaction between the two groups.

Examples of α,β-ethylenically unsaturated monomers copolymerizable with α,β-ethylenically unsaturated acid amides (C) include methyl acrylate, ethyl acrylate, butyl acrylate,
Acrylic acid esters such as 2-ethylhexyl acrylate; Methacrylic acid esters such as methyl methacrylate, ethyl methacrylate, and butyl methacrylate; Maleic acid, fumaric acid, and itaconic acid esters; Vinyl acetate,
Vinyl esters such as vinyl propionate and vinyl tertiary carboxylate; aromatic vinyl compounds such as styrene, α-methylstyrene, and vinyltoluene; heterocyclic vinyl compounds such as vinylpyrrolidone; vinyl chloride, acrylonitrile, vinyl ether, and vinyl ketone , vinylamide, etc.; halogenated vinylidene compounds such as vinylidene chloride and vinylidene fluoride; α-olefins such as ethylene and propylene; and dienes such as butadiene. If desired, monomers having two or more unsaturated bonds in one molecule such as diallyl phthalate, divinylbenzene, allyl acrylate, and trimethylolpropane trimethacrylate can also be used. Furthermore, those having an unsaturated group, a sulfonic acid group, or a sulfate group, such as vinyl sulfonic acid, styrene sulfonic acid, and allylalylbutyl taf untosulfate, and their alkali salts can also be used.

Furthermore, α,β-ethylenically unsaturated monomers having reactive polar groups can also be used. For example, glycidyl compounds such as glycidyl acrylate, glycidyl methacrylate, and allylglycidyl ether; silane compounds such as vinyltrichlorosilane, vinyltriethoxysilane, vinyltris(β-methoxyethoxy)silane, and γ-methacryloxypropyltrimethoxysilane; β- Examples include hydroxyl-based compounds such as hydroxyethyl acrylate and β-hydroxyethyl methacrylate.

Next, a method for producing the aqueous coating composition of the present invention will be described.

That is, a polymerization initiator is added to a mixture of a cyclic urea compound (A) and an emulsifier, and an α,β-ethylenically unsaturated acid (B
) and α, β-ethylenically unsaturated acid amides (C),
An emulsion polymer composition is obtained by continuously carrying out an emulsion polymerization reaction while stirring the mixture to which other α,β-ethylenically unsaturated monomers etc. which can be copolymerized with (C) are added.

Next, the aqueous coating composition of the present invention is produced using this emulsion polymer composition as a vehicle in exactly the same manner as in the production of conventional emulsion coatings. i.e. pigments, fillers, aggregates, dispersants, wetting agents, thickeners and/or rheology control agents, antifoaming agents, plasticizers, coalescence agents, organic solvents, preservatives, anti-padding agents, pH adjustment. Agents, anti-corrosion agents, etc. are selected and combined according to their respective purposes, and prepared into paints using conventional methods.

As the emulsifier used in the production of the emulsion polymer composition, any known emulsifier may be used.

For example, anionic emulsifiers such as sodium lauryl sulfate, sodium alkylbenzene sulfonate, sodium dioctyl sulfosuccinate, polyoxyethylene alkylphenyl ether sulfate; polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, polyoxyethylene Nonionic emulsifiers such as polyoxyfuropylene flonoc copolymer and the like can be appropriately selected and used.

An important feature of the aqueous coating composition of the present invention is that there is a wide range of choice in the type and amount of emulsifier used when producing the emulsion polymer composition. The emulsion polymer composition of the present invention can be prepared by appropriately selecting from known anionic emulsifiers and nonionic emulsifiers.
Can be used selectively.

Furthermore, even when the amount of emulsifier used is smaller than the amount of emulsifier used in ordinary emulsion polymerization, it is possible to obtain an emulsion that is sufficiently stable and has fewer aggregates.

That is, the amount of emulsifier used is 0.00 parts by weight per 100 parts by weight of the α,β-ethylenically unsaturated monomer. It is appropriate to use 1 to 5.0 parts by weight, preferably 0.2 to 3.0 parts by weight.

This is due to the interaction of cyclic urea, α, β-ethylenically unsaturated acid, and amide of α, β-ethylenically unsaturated acid, which increases the emulsifying ability for α, β-ethylenically unsaturated monomer. This is thought to be due to an increase in the number of children.

This effect is due to the weather resistance of the wet adhesion aid used when mixing oil-modified alkyd and synthetic resin emulsion, which are used as a means to improve wet adhesion, and when manufacturing synthetic resin emulsion. , which significantly improves poor stain resistance.

That is, for wet adhesion aids, anionic emulsifiers could rarely be used due to the cationic nature of the compounds themselves. Therefore, in order to obtain a stable emulsion with few aggregates, it is necessary to use a large amount of nonionic emulsifier, so it has been difficult to obtain significant improvements in weather resistance and stain resistance.

According to the present invention, as described above, α,β-ethylenically unsaturated monomers are It is thought that the emulsifying ability for the body increases, so when producing an emulsion polymer composition, even if the amount of emulsifier used is smaller than that used in ordinary emulsion polymer compositions, it will be stable and will not cause the formation of aggregates. It is possible to obtain a small amount of emulsion, and it is possible to improve wet adhesion without impairing weather resistance and stain resistance.

Furthermore, water-soluble oligomers and emulsifiers having α,β-ethylenically unsaturated double bonds, so-called reactive emulsifiers, can also be used alone or in combination with the above-mentioned emulsifiers.

Furthermore, it is also effective to use water-soluble polymeric substances such as polyvinyl alcohol, hydroxyethyl cellulose, etc. in combination with the above-mentioned emulsifier or to add them to the porous solution after polymerization.

As the polymerization initiator used during emulsion polymerization, water-soluble and oil-soluble polymerization initiators are used, and they may be used alone or in combination.

Examples of water-soluble polymerization initiators include hydrogen peroxide, ammonium persulfate, potassium persulfate, and sodium persulfate. As the oil-soluble polymerization initiator, 2. 2'-
Azobisisobutyronitrile, 2.2”-azobis-(
4-methoxy-2,4-dimethylvaleronitrile), 2
．． 2'-azobis-2,4-dimethylvaleronitrile, 1. Examples include 1' azobiscyclo to bovine san-cyclo to bovine san-1-carbonitrile, benzoyl peroxide, lauroyl peroxide, dibutyryl peroxide, diacetyl peroxide, dipropionyl peroxide, cumene hydroperoxide and the like.

Among the above polymerization initiators, from the viewpoint of weather resistance and stain resistance,
Particular preference is given to using organic peroxides or hydrogen peroxide.

These water-soluble and oil-soluble polymerization initiators and a suitable reducing agent,
For example, so-called redox initiators consisting of ascorbic acid in combination with sulfites or sulfoxylates may be used.

During emulsion polymerization, a chain transfer agent may be used to adjust the molecular weight. Suitable chain transfer agents include methyl mercaptan, ethyl mercaptan, propyl mercaptan,
Mercaptans such as isopropyl mercaptan, butyl mercaptan, pentyl mercaptan, hexyl mercaptan, octyl mercaptan, decyl mercaptan, undecyl mercaptan, dodecyl mercaptan, stearyl mercaptan, 0-mercaptobenzoic acid, mercaptoacetic acid, methanol, ethyl mercaptan, propyl mercaptan, etc. tool,
Improper tool, butanol, imbutanol, t-
Mention may be made of butanol, pentanols, and hexanols.

The glass transition temperature of the emulsion polymer composition of the aqueous coating composition of the present invention is determined from the viewpoints of weather resistance, stain resistance, and wet adhesion.
The temperature is preferably in the range of -10 to 40°C.

From a practical standpoint, the concentration of emulsion polymerization is preferably such that the solid content concentration of the final composition is 25 to 65% by weight, and the α,β-ethylenically unsaturated monomer and polymerization initiator are
It can be carried out by any known method such as bulk charging, continuous dropwise addition, and divided addition to the reaction system.

The temperature during emulsion polymerization may be within the temperature range already used in known emulsion polymerization methods, and the pressure during emulsion polymerization may be normal pressure. When used, it is done under pressure.

(Examples) The present invention will be described in more detail with reference to Examples below, but the present invention is not limited to the following Examples.

Note that all parts and percentages below are based on weight (values).

Example 1 (Production example 1 of emulsion polymer composition) The following materials were prepared as raw materials.

■Cyclic urea compound N, N'-ethylene urea ■Polymerizable monomer 2-ethylhexyl acrylate 175g styrene
200g methyl methacrylate
105g N-methylolacrylamide 1
0 g acrylic acid 10 g Emulsifier Nucor 707SF (30% solids) 50 g ■ Ion-exchanged water 480 g ■ Polymerization initiator ammonium persulfate 2.5 g 11> Special anion emulsifier made by Nippon Nyukazai Co., Ltd. Add ethylene urea to a neck flask. log, emulsifier 5g, ion exchange water 33
After charging 0 g, stirring was started, the temperature was raised to 80° C. in a nitrogen stream, and then a polymerization initiator was added. Next, 500 g of a polymerizable monomer, 45 g of an emulsifier, and 150 g of ion-exchanged water were mixed to prepare a monomer pre-emulsion, and this monomer pre-emulsion was dropped into the above-mentioned flask over a period of 3 hours. The reaction temperature at this time was maintained at 80±3°C. After completion of the dropwise addition, the reaction was continued under stirring while maintaining the same temperature range for 2 hours, and then it was cooled and adjusted to pH 8 to 9 with 14% ammonia water, so that the nonvolatile content was 50.0%, the viscosity was 1200 cps, and the pH was 8. , 5 was obtained.

Using this emulsion polymer composition, an aqueous coating composition was obtained according to the following formulation.

Paint compound water Ethylene glycol (anti-freezing agent) Finflo-540 (dispersant; Nippon Zeon KK product) 10, 0 2.6 1.0 Neugen EA-1200,3 (wetting agent; Daiichi Kogyo Seiyaku KK product) Bestside FX O,01 (Dainippon Ink Chemical KK product) JR-600A 36.0 (Titanium oxide; Teikoku Kako KKfJ1 product) SN Deformer 12
1 0.4 (antifoaming agent; Sannobuf KK product) Aqueous ammonia (28%) 0.15 Emulsion (50%) 100.0 Texanol 7.0 (coating aid; Eastman Chemical product) Sevenrosize QP- 4400 (3
%) 9.2 (thickener; Union Carbide product)
water 3
．． 75Total
170. 41N,V,
51.0% pigment volume concentration (PVC)
20% and Table 1 in the same manner as in Example 1.
Emulsion polymer compositions (NO12-7) were synthesized using the raw materials and polymerization conditions shown in Example 1, and water-based paint compositions (Examples 2-7) were obtained by the same paint formulation as in Example 1. .
On the other hand, emulsion polymer compositions (No. 8 to 1) were prepared in the same manner as in Example 1 using the raw materials and polymerization conditions shown in Table 1.
3) was synthesized and the same paint formulation as in Example 1 was used to obtain aqueous paint compositions (Comparative Examples 1 to 6).

The relationship between the emulsion polymer composition, Examples, and Comparative Examples is as follows.

Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Emulsion polymer composition no.

water-based paint composition Emulsion polymer composition no.

water-based paint composition Emulsion polymer composition no.

water-based paint composition Vehicle emulsion polymer composition No. 4 water-based paint composition Emulsion polymer composition no.

water-based paint composition Emulsion polymer composition no.

Example 7 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Emulsion polymer composition N007 Water-based paint composition using emulsion polymer composition No. 10 as a vehicle Water-based paint composition using emulsion polymer composition No. 10 as a vehicle Water-based paint composition using emulsion polymer composition No. 10 as a vehicle Water-based paint composition using emulsion polymer composition No. 11 as a vehicle Water-based paint composition using emulsion polymer composition No. 12 as a vehicle Water-based paint composition using emulsion polymer composition No. 13 as a vehicle The test results of the coating film performance of the aqueous coating compositions of Examples and Comparative Examples are as shown in Table 2.

/ / Test method Stain resistance (1) Outdoor stain resistance; 2 brush paints on a flexible board
After applying multiple coats and drying for 7 days, an outdoor vacuum test was conducted and the surface condition was observed after 1 year.

○...Good △...Slightly smeared ×...Small smudge (2) Ink staining property: Apply to a glass plate with a 3ml applicator, dry overnight in 65% RH at 20 degrees, then apply KK Pilot. Place a 10% solution of black ink made by Kogyo Co., Ltd. in spots on the paint film and leave it for 60 minutes.

Then apply the ink with gauze. Wipe it off and check the degree of contamination. is judged using a 10-point evaluation method.

Adhesiveness; 10 points...no ink at all leaves no trace 1 point...Is it ink on the paint film? Smudged aftertaste It remains.

Mild steel plate is 15° after degreasing with xylene. Aluminum on 70x150mm mild steel plate Apply Rad paint and dry for 7 days After that, 1 coat of the aqueous coating composition of the present invention was applied. 4 hours after applying 0.6g for the second time Apply 0.3g and after drying for 1 day, apply Make a cross cut with a razor, For cellophane adhesive tape peel test Judgment.

○: No peeling at all △: Partial peeling ×: Peeling around the cellophane adhesive tape Wet adhesion; A test piece prepared under the same conditions as the adhesive test was immersed in water overnight. , determine the state of blistering. After taking it out of the water and drying it for 3 hours at 20°C and 165% RH, it was cross-cut and evaluated using a cellophane adhesive tape peel test.

Blistering; ○... No blisters at all △... Blisters formed on part of the specimen ×... Blisters formed on the entire specimen Cellophane adhesive tape peeling test; ○... No peeling at all △... Partial peeling ×...Peeling around the cellophane adhesive tape area Weather resistance; Apply two coats of paint to the flexible board with a brush 7
After drying for several days, an outdoor vacuum test was conducted and the surface condition was observed after one year.

(Effects of the Invention) As can be seen from Table 2, the aqueous coating composition of the present invention has good weather resistance and stain resistance, and also exhibits coating film characteristics that combine wet adhesion.

Therefore, this water-based paint composition is suitable not only for indoor painting but also for outdoor painting, and is fully applicable not only to the household paint field but also to the industrial painting field, and can also be used as a replacement for organic solvent paints. It is possible.

Agent: Patent attorney, Katsutoshi Takahashi

Claims (1)

[Claims] 1. Cyclic urea compound (A), α,β-ethylenically unsaturated acid (B) and amides of α,β-ethylenically unsaturated acid (C
) and another α,β-ethylenically unsaturated monomer copolymerizable with (C), and an emulsion polymer composition obtained by emulsion polymerization is used as a vehicle. 2. The cyclic urea compound (A) is the following group I N'-methylol-N,N'-ethyleneurea, N'-methylol-N,N'-n-propyleneurea, N'-methylol-N, N'-iso-propyleneurea, dimethylol-N,N'-ethyleneurea dimethylol-N,N'-n-propyleneurea, dimethylol-N,N'-iso-propyleneurea, or Group II N,N'-ethylene Urea, N,N'-n-propylene urea, N,N'-iso-propylene urea, N'-hydroxy-N,N'-ethylene urea, N'-hydroxy-N,N'-n-propylene urea, The aqueous coating composition according to claim 1, characterized in that at least one compound selected from N'-hydroxy-N,N'-iso-propylene urea is used. 3. The α,β-ethylenically unsaturated acid (B) consists of acrylic acid, methacrylic acid, maleic acid or its half ester compound, fumaric acid or its half ester compound, itaconic acid or its half ester compound, crotonic acid The aqueous coating composition according to claim 1 or 2, characterized in that at least one compound selected from the group is used. 4. α,β-ethylenically unsaturated acid amides (C) are
The following group III acrylamides, methacrylamide, N-methylacrylamide, N-methylmethacrylamide, N,N-dimethylacrylamide, N,N-dimethylmethacrylamide, maleic acid amide, fumaric acid amide, diacetone acrylamide, diacetone methacrylamide amide, or group IV N-methylolacrylamide, N-methylolmethacrylamide, N,N-dimethylolacrylamide, N,N-dimethylolmethacrylamide, dimethylolitaconamide, dimethylolmaleic acid amide, dimethylol fumaric acid amide, The aqueous coating composition according to claim 1, 2 or 3, characterized in that at least one compound selected from the following is used. 5. At least one compound selected from Group I according to claim 2 is used as the cyclic urea compound, and at least one compound selected from Group III according to claim 4 is used as the amide of α,β-ethylenically unsaturated acid. The aqueous resin composition according to claim 1, characterized in that one type of compound is used. 6. At least one compound selected from Group II according to claim 2 is used as the cyclic urea compound, and at least one compound selected from Group IV according to claim 4 is used as the amide of α,β-ethylenically unsaturated acid. The aqueous resin composition according to claim 1, characterized in that one type of compound is used. 7. According to any one of claims 1 to 6, the amount of the cyclic urea compound used is 0.1 to 10.0 parts by weight based on 100 parts by weight of the α,β-unsaturated monomer. water-based paint composition. 8. The amount of α,β-ethylenically unsaturated acid used is
0.2 to 5.0 per 100 parts by weight of unsaturated monomer
The aqueous coating composition according to any one of claims 1 to 7, which is in parts by weight. 9. The amount of α,β-ethylenically unsaturated acid amide used is 0.00 parts by weight per 100 parts by weight of α,β-unsaturated monomer.
Any one of claims 1 to 8, wherein the amount is 2 to 10.0 parts by weight.
The water-based paint composition described in . 10. The amount of emulsifier used during emulsion polymerization is 0 with respect to 100 parts by weight of the total amount of α,β-ethylenically unsaturated monomers.
．． Any one of claims 1 to 9, wherein the amount is 1 to 5.0 parts by weight.
The water-based paint composition described in . 11. The polymer composition according to claim 1 has a glass transition temperature of -
The aqueous coating composition according to any one of claims 1 to 10, which has a temperature in the range of 10 to 40°C. 12. The aqueous coating composition according to any one of claims 1 to 11, wherein an organic peroxide or hydrogen peroxide is used as a radical initiator during emulsion polymerization.