JP2002265926A - Anti-staining agent composition for heat exchanger fin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anti-staining agent composition for a heat exchanger fin, which is effective to make a heat exchanger fin resistant to stain adhesion and to clean a heat exchanger fin without causing the corrosion of the fin and the damage of the constituent plastic. SOLUTION: This composition contain a polymer of a weight-average molecular weight of 1,000-6,000,000, obtained by polymerizing a polymerizable unsaturated compound having at least one quaternary ammonium group or tertiary amino group in the molecule. The composition optionally contains at least one compound selected from a specified polysaccharide compound and an amine oxide compound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composition of an antifouling agent, such as an indoor air conditioner, for preventing dirt from adhering to a heat exchanger fin used for heating or cooling air or the like. Here, the heat exchanger fin means a thin metal plate (aluminum or the like) having a thickness of about 0.1 mm, which is arranged countlessly at intervals of about 1 mm in a direction perpendicular to the front face.

[0002]

2. Description of the Related Art The surface of heat exchanger fins is contaminated by the adhesion of dirt (oil, dust, cigarette dust, etc.) which are often found indoors. The fin surface becomes water-repellent due to the adhesion of the dirt described above, so that the drainage of dew condensation water is easily inhibited. As a result, the air circulation efficiency is reduced, and the cooling efficiency is reduced. Furthermore, if the dirt is left for a long time, molds and bacteria will grow on the dirt, causing a bad smell and releasing molds and bacteria into the space when the air conditioner is started. Is concerned.

The following prior art is known as a cleaning agent for removing dirt adhering on such heat exchanger fins. For example, Japanese Patent Application Laid-Open No. 8-157899 discloses that the cleaning liquid sprayed on the heat exchanger fins foams after adhering to the fins, and the foamed cleaning liquid is held between the fins for a long time to increase the cleaning power. An aerosol-type cleaning agent characterized by enhancing the carboxyethyl thiosuccinate, surfactant, and terpenoid in JP-A-10-140196, which enables cleaning without corroding fins The cleaning agent characterized in that, JP-A-11-92795
The publication discloses that an aerosol method containing a surfactant as a cleaning component and disinfecting microorganisms and molds by incorporating a thiazolone-based / chlorophenol-based / quaternary ammonium salt-based bactericide. Japanese Patent Application Laid-Open No. 11-152498 discloses that the cleaning agent contains a nonionic surfactant, limonene, and lower alcohols, and can be washed without corroding metals by neutralizing the solution. An aerosol-type cleaning agent characterized by the following is disclosed.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to make it difficult for dirt to adhere to the heat exchanger fins,
An object of the present invention is to provide an antifouling composition for heat exchanger fins in which corrosion of heat exchanger fins and damage to plastic are suppressed.

[0005]

According to the present invention, the weight average molecular weight obtained by polymerizing a polymerizable unsaturated compound having one or more quaternary ammonium groups or tertiary amino groups in the molecule is from 1,000 to 6,000. The present invention relates to an antifouling agent composition for heat exchanger fins containing a polymer (hereinafter, referred to as “component (a)”), and an antifouling agent article for heat exchanger fins, which is filled in a spray container.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The antifouling composition for heat exchanger fins according to the present invention has a component (a) content of 0.005 to 0.005 in terms of detergency and antifouling performance.
The content is preferably 30% by mass, more preferably 0.01 to 20% by mass, and still more preferably 0.01 to 10% by mass.

[0007] The polymerizable unsaturated compound constituting the polymer of the component (a) is a compound having three or more repeating units when radical polymerization is carried out usually using a generally used polymerization initiator. It is. Specific preferred examples of the polymerizable unsaturated compound include one or more compounds selected from compounds represented by the following general formulas (1) and (2). Among them, the compound of the general formula (1) is preferable.

[0008]

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Wherein R ¹ , R ² and R ³ are each independently a hydrogen atom, a hydroxyl group or an alkyl group having 1 to 3 carbon atoms.
X is an alkylene group having 1 to 12 carbon ^{atoms, -COOR 7 -, - CONHR 7} -, -
OCOR ⁷ -or -R ⁸ -OCO-R ⁷ -is a group selected from
⁷ , R ⁸ are each independently an alkylene group having 1 to 5 carbon atoms. R ⁴ is an alkyl group having 1 to 3 carbon atoms, hydroxyalkyl group or ^{R 1 R 2 C = C (} R 3) is -X-. R ⁵ is an alkyl or hydroxyalkyl group or a benzyl group having 1 to 3 carbon atoms. R ⁶ has 1 carbon atom which may be substituted with a hydroxy group, a carboxy group, a sulfonic acid group or a carbonate group.
An alkyl group or a benzyl group 10, if R ⁶ is an alkyl group, a hydroxyalkyl group or a benzyl group, Y ^-
Represents an anionic group. When R ⁶ contains a carboxy group, a sulfonic acid group or a sulfate group, Y ⁻ does not exist, and these groups in R ⁶ become anions. ].

Among them, acryloyl (or methacryloyl) aminoalkyl (1 to 5 carbon atoms) -N, N, N-trialkyl (1 to 3 carbon atoms) quaternary ammonium salt, acryloyl (or methacryloyl) oxyalkyl (carbon Number 1
-5) -N, N, N-trialkyl (1-3 carbon atoms) quaternary ammonium salt, N- (ω-alkenyl (2-10 carbon atoms))-N, N, N-
Trialkyl (C 1-3) quaternary ammonium salt, N, N-
Di (ω-alkenyl (C2-10))-N, N-dialkyl (C1-3) quaternary ammonium salts are preferred, and diallyldimethylammonium salts are particularly preferred.

As the polymer of the component (a), a polymer obtained by polymerizing the above polymerizable unsaturated compound alone can be used.
It is preferable to use a copolymer of a polymerizable unsaturated compound and a copolymerizable unsaturated compound. As the unsaturated compound, the following compounds are preferred, and particularly and / or compounds are good. Acrylic acid or its salt, methacrylic acid or its salt, maleic acid or its salt, maleic anhydride or its salt, styrene sulfonate, 2-acrylamido-2-methylpropane sulfonate, allyl sulfonate, vinyl sulfonic acid Salt, methallyl sulfonate, sulfopropyl methacrylate, anionic group-containing compound selected from mono-ω-methacryloyloxyalkyl phosphate (C 1 to C 12) acrylic (or methacryl) amide, N, N-dimethylacryl ( Or methacryl) amide, N, N-dimethylaminopropylacrylic acid (or methacrylic acid) amide, N, N-
Dimethylaminoethylacrylic acid (or methacrylic acid)
Amide, N, N-dimethylaminoethylacrylic acid (or methacrylic acid) amide, N-vinyl-2-caprolactam, N-
Amide group-containing compound selected from vinyl-2-pyrrolidone Alkyl acrylate (or methacrylate) alkyl (C1
~ 5), acrylic acid (or methacrylic acid) 2-hydroxyethyl, acrylic acid (or methacrylic acid) -N, N-dimethylaminoalkyl (1 to 5 carbon atoms), ester group-containing compound selected from vinyl acetate ethylene, Propylene, N-butylene, isobutylene,
N-pentene, isoprene, 2-methyl-1-butene, N-hexene, 2-methyl-1-pentene, 3-methyl-1-pentene, 4-
Methyl-1-pentene, 2-ethyl-1-butene, styrene, vinyltoluene, α-methylstyrene, allylamine, N,
N-diallylamine, N, N-diallyl-N-alkyl (C 1
~ 5) Olefinic compounds selected from amines, ethylene oxide, propylene oxide, 2-vinylpyridine and 4-vinylpyridine Sulfur dioxide.

The polymer of the component (a) is obtained by mixing a polymerizable unsaturated compound and an unsaturated compound with (polymerizable unsaturated compound) / [(polymerizable unsaturated compound) + (unsaturated compound)] = 0.3 to 1, Preferably
0.4-1, more preferably 0.5-1 and particularly preferably 0.5-
Those obtained by polymerization at a molar ratio of 0.95 are preferred.

The polymer of the component (a) can be obtained by a usual radical polymerization reaction. As the polymerization method, bulk polymerization, solution polymerization, emulsion polymerization, or the like can be used. Examples of the polymerization initiator include azo initiators such as 2,2′-azobis (2-amidinopropane), hydrogen peroxide, t-butyl hydroperoxide, cumene hydroperoxide, methyl ethyl ketone peroxide, cyclohexanone peroxide, and the like. Redox initiators such as peracetic acid, perbenzoic acid, persulfates and the like can be used.

The polymer of component (a) has a weight average molecular weight of 1,000 to 6
One million, preferably 10,000 to 6 million, particularly preferably 50,000 to 4 million, wherein the weight average molecular weight can be determined by gel permeation chromatography using polyethylene glycol as a standard.

The antifouling composition for heat exchanger fins of the present invention can contain a surfactant for imparting a cleaning effect. Surfactants include nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants. Nonionic and amphoteric surfactants are preferred. In terms of improving the cleaning performance and suppressing the influence on the substrate, from the compound represented by the following general formula (3) as a nonionic surfactant and the compound represented by the following general formula (4) as an amphoteric surfactant It preferably contains one or more selected compounds. Further, the compound of the general formula (3) and the general formula (4)
Can also be used in combination. _{^{R 9 - (OR 10) p}} G q (3) wherein, R ⁹ is an alkyl group having 6 to 18 carbon atoms linear or branched, alkenyl group, or alkylphenyl group, R ¹⁰ is 2 carbon atoms 4, an alkylene group, G is a residue derived from a reducing sugar having 5 or 6 carbon atoms, preferably a glucose residue, p is a number having an average value of 0 to 6, and q is a number having an average value of 1 to 10. . ]

[0016]

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Wherein R ¹¹ is an alkyl group or alkenyl group having 3 to ¹⁸ carbon atoms, and R ¹³ and R ¹⁴ are an alkyl group or hydroxyalkyl group having 1 to 3 carbon atoms. R ¹² is 1 to carbon atoms
5 alkylene groups. A is -COO-, -CONH-, -OCO-, -N
A group selected from HCO- and -O-, and r is a number of 0 or 1. ].

Specific examples of the compound represented by the general formula (3) include decyl glucoside, decyl maltoside, dodecyl glucoside, dodecyl maltoside, myristyl glucoside, myristyl maltoside, cetyl glucoside, cetyl maltoside, and stearyl glucoside. , Stearyl maltoside, coconut oil glucoside, coconut oil maltoside, tallow glucoside, tallow maltoside, and the like.

Specific examples of the compound represented by the general formula (4) include butyldimethylamine oxide, hexyldimethylamineoxide, octyldimethylamineoxide, decyldimethylamineoxide, dodecyldimethylamineoxide, amidopropyldimethylbutyrate. Examples thereof include amine oxide, amidopropyldimethylamine oxide caproate, amidopropyldimethylamine oxide caprylate, amidopropyldimethylamine oxide caprate, and amidopropyldimethylamine oxide laurate. Among these, octyl dimethyl amine oxide, decyl dimethyl amine oxide, dodecyl dimethyl amine oxide, amidopropyl dimethyl amine oxide caprate, and amide propyl dimethyl amine oxide laurate are more preferable.

The surfactant is contained in the composition in an amount of 0.1 to 20% by mass.
It is preferably contained, more preferably 0.5 to 15% by mass, and still more preferably 1 to 10% by mass.

In terms of reducing the damage to the substrate, the above general formula
The total amount of the compounds (3) and (4) is preferably at least 50% by mass, more preferably at least 60% by mass, even more preferably at least 70% by mass, particularly preferably at least 80% by mass in the total surfactant. . In the present invention, antibacterial compounds having at least one quaternary ammonium group and having a molecular weight of less than 1,000 are excluded from the cationic surfactant.

The composition of the present invention can be used at a temperature of 20 ° C. by adding an alkali agent in order to improve detergency and reduce damage to a substrate.
Is preferably 7 to 13, more preferably 7.5 to 12, and even more preferably 8 to 11.5.

From the viewpoint of the cleaning effect, the composition of the present invention preferably contains an alkali agent in an amount of 0.01 to 20% by mass,
10 mass% is more preferable, and 0.1 to 10 mass% is still more preferable.

Examples of the alkaline agent include carbonates such as sodium carbonate and potassium carbonate, silicates such as sodium orthosilicate, sodium metasilicate, sodium silicate and potassium silicate, and the following general formulas (i) to (iv) And 2-amino-2-methyl-1-propanol, etc., and may be a weak acid and a strong base.

[0025]

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Wherein R ′ ₁ , R ′ ₄ , R ′ ₆ , R ′ ₈ , R ′ ₁₀ ,
R ′ ₁₂ and R ′ ₁₃ each represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R ′ ₂ , R ′ ₃ , R ′ ₅ , R ′ ₇ , R ′ ₉ , and R ′ ₁₁ each represent a hydrogen atom And an alkyl group having 1 to 4 carbon atoms or a hydroxyalkyl group having 2 to 3 carbon atoms. ].

Among them, sodium carbonate, potassium carbonate, sodium silicate, potassium silicate, ammonia,
Monoethanolamine, diethanolamine, morpholine, 2-amino-2-methyl-1-propanol are preferred.

The composition of the present invention preferably contains an antimicrobial compound having at least one quaternary ammonium group and having a molecular weight of less than 1,000, and preferably not more than 500, from the viewpoint of reducing offensive odor. ~ 30 mass% is more preferable, 0.001 ~ 20 mass% is still more preferable, 0.005 ~ 5 mass%
Is particularly preferred.

As the antibacterial compound having a molecular weight of less than 1,000, compounds represented by the following general formulas (5) to (7) are preferable, and compounds which are water-soluble are more preferable. Where water solubility is 20
The amount dissolved in 1 L of water at 1 ° C. is 1 g or more, preferably 2 g or more.

[0030]

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Wherein R ¹⁵ and R ²⁰ are an alkyl group or alkenyl group having 6 to 18 carbon atoms, preferably 8 to 16 carbon atoms, preferably an alkyl group, and R ¹⁷ and R ¹⁸ are each independently It is an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group. X ¹ is an aromatic ring or -COO-, -CONH-, -OCO-, -NHCO-
An ester group or amide group selected from, R ¹⁶
Is an alkylene group having 1 to 6 carbon atoms which may be substituted with a hydroxyl group when X ¹ is an ester group or an amide group, and may be substituted with a hydroxyl group when X ¹ is an aromatic ring. A good alkylene group having 1 to 6 carbon atoms or — (OR ²⁵ ) _k —.
Here, R ²⁵ is an ethylene group or a propylene group (preferably an ethylene group), and k is a number having an average of 1 to 10 (preferably an average of 1 to 5). R ¹⁹ is an alkylene group having 1 to 3 carbon atoms. R ^{21 to} R ²⁴ are one or more, preferably two of them, an alkyl group having 6 to 18 carbon atoms, preferably 8 to 16 carbon atoms,
The remainder is an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group. M is a number of 0 or 1. Y ^- is an anionic group, preferably a halogen ion, a sulfate ion,
An alkyl sulfate ion having 1 to 12 carbon atoms; an aromatic sulfonic acid ion which may be substituted by an alkyl group having 1 to 12 carbon atoms; an organic carboxylate ion; an alkyl phosphate ion; a phosphate ion; and a polyphosphate ion. ].

A more preferable antibacterial compound having a molecular weight of less than 1,000 is a compound of the general formula (5) or (7), and most preferably a compound of the following general formula.

[0033]

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The composition of the present invention preferably contains a water-soluble solvent for the purpose of improving the detergency of organic stains.
As the water-soluble solvent, a monohydric alcohol having 1 to 5 carbon atoms,
Polyhydric alcohol having 4 to 12 carbon atoms, a compound represented by the following general formula (8), a compound represented by the following general formula (9) and a compound represented by the following general formula (10) Be
One or more are preferred.

[0035]

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[In the formula, R ²¹ and R ²² each represent a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a phenyl group or a benzyl group, and when both R ²¹ and R ²² are hydrogen atoms, except. s indicates the number of 0 to 10 and t indicates the number of 0 to 10.
Except when both are 0. R ^{2 3} and R ²⁴ having 1 to 3 carbon atoms
Represents an alkyl group. R ²⁵ represents an alkyl group having 1 to 3 carbon atoms. ].

The monohydric alcohol having 2 to 5 carbon atoms generally includes ethanol, propyl alcohol and isopropyl alcohol. By incorporating these lower alcohols, the stability of the system at low temperatures can be further improved.

Examples of the polyhydric alcohol having 4 to 12 carbon atoms include isoprene glycol, 2,2,4-trimethyl-1,3-pentanediol, 1,8-octanediol, 1,9-nonanediol, ethylene glycol ,Propylene glycol,
Examples thereof include diethylene glycol, dipropylene glycol, glycerin, and monoalkyl glyceryl ether having an alkyl group having 3 to 8 carbon atoms.

In the general formula (8), R ²¹ ,
The number of carbon atoms in the case R ²² is an alkyl group having 1 to 4 is particularly preferred. In the general formula (8), ethylene oxide (hereinafter, referred to as EO) and propylene oxide (hereinafter, referred to as EO)
S and t of the average addition mole number of
Although numbers from 0 to 10 are used, their addition order is not particularly limited, and they may be randomly added. Specific examples of the compound of ethylene glycol monobutyl ether, dipropylene glycol dimethyl ether, diethylene glycol monoethyl ether,
Diethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether, propylene glycol dimethyl ether, polyoxyethylene (p = 2-3) polyoxypropylene (p = 2-3)
Glycol dimethyl ether (p indicates the average number of moles added), polyoxyethylene (p = 3) glycol phenyl ether, phenyl carbitol, phenyl cellosolve, benzyl carbitol and the like can be mentioned. this house,
From the viewpoints of detergency and usability, propylene glycol monomethyl ether, diethylene glycol monobutyl ether, and polyoxyethylene (p = 1 to 4) glycol phenyl ether are preferred.

Examples of suitable compounds include 1,3-dimethyl-2-imidazolidinone and 1,3-diethyl-2-imidazolidinone.

As the compound, 3-methoxy-3-methylbutanol, 3-ethoxy-3-methylbutanol and the like are preferable.

Of these, water-soluble solvents are preferred from the viewpoint of damage to the base material, and particularly, ethanol, isopropyl alcohol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, glycerin, isoprene glycol, and propylene A water-soluble solvent selected from glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether and monoalkyl glyceryl ether having an alkyl group having 3 to 8 carbon atoms is preferable.

The water-soluble solvent is preferably contained in the composition in an amount of 0.1%.
-20% by mass, more preferably 0.5-10% by mass, particularly preferably 1-10% by mass.

The composition of the present invention is a liquid with the balance being water. Other optional components include a chelating agent, a viscosity adjuster, a foam adjuster, an antioxidant, a solubilizer, a bactericidal / antifungal agent. Agents, rust inhibitors, enzymes, enzyme stabilizers, coloring agents, fragrances and the like.

A preferred use form of the composition of the present invention includes use by spraying. As a spraying method,
In addition to the aerosol method using a propellant such as LPG, a spraying method using a manual spray container without using a propellant can be used. In particular, it is preferable that the foam be generated by the latter manual spray and adhere to the target surface. The manual spraying device referred to in the present invention refers to a device that does not use a propellant and can be sprayed by manual pressurization, and includes a device called a trigger type or a pump type. In the present invention, a trigger type is preferable, and in particular, Japanese Utility Model Laid-Open No. 4-17855, Japanese Utility Model Laid-Open No. 4-37554, Japanese Unexamined Patent Application Publication No.
The trigger type spray device provided with the pressure accumulating mechanism described in Japanese Patent No. 122547 is more preferable in terms of prevention of dripping of the liquid and spray characteristics.

When a manual spray container is used, the amount discharged at one time is preferably 0.1 to 1.2 g, more preferably 0.2 g.
~ 1.0 g, most preferably 0.25-0.8 g, and furthermore
When sprayed from 15cm away from the cleaning target surface, the area of the cleaning agent adhering to the cleaning object surface in one spraying, preferably 50～800Cm ^2, more preferably the spray characteristics become 100～600Cm ² It is better to have one.

[0047]

EXAMPLES Examples 1 to 4 and Comparative Examples 1 to 3 The antifouling agent compositions for heat exchanger fins having the compositions shown in Table 1 were prepared and evaluated as follows. Table 1 shows the results.

<Antifouling Property> An aluminum plate (76 mm × 26 mm × 1 mm) was immersed in a fin antifouling composition for a heat exchanger, taken out and dried. Next, oleic acid was spotted on the surface in 0.5
g. The aluminum plate on which oleic acid is dropped is left at the bottom of the water tank so that oleic acid does not flow, and the water tank is gently filled with water so that the aluminum plate is not directly exposed to water. The measurement was performed by measuring the rate at which oleic acid was removed from the aluminum plate surface with the naked eye. ：: Removal amount is 50% or more Δ: Removal amount is 30% or more and less than 50% ×: Removal amount is less than 30%.

<Washability> An aluminum plate (76 mm × 26 mm × 1 mm) was immersed in the fin antifouling composition for a heat exchanger, taken out and dried. Next, 10 mg / cm ^{2 of} salad oil used in the production of tempura at home was applied and left at room temperature for 3 months. Next, about 1 g of the heat exchanger fin antifouling agent composition filled in the trigger type spray container was sprayed and left for 20 seconds to evaluate the detergency. ：: 60% or more of the surface is cleaned. Δ: 40% or more and less than 60% of the surface is cleaned. ×: The cleaned surface is less than 40%.

<Plastic damage> ABS resin plate (70 mm ×
10mm x 1mm) and polystyrene resin plate (70mm x 10mm x 1m
m) was bent near the longitudinal center so that the long side of 70 mm became 68 mm and a stress was applied. Absorbent cotton (10 mm × 5 mm × 3 mm) is placed on the above-described substrate, 0.5 g of a heat exchanger fin antifouling agent composition is dropped thereon, and after one week (20 ° C. or 60 ° C.), the following is applied after compressing. The damage was evaluated visually according to the criteria. ◎: There is no apparent cracking, and no cracking occurs when bending is applied with a stronger stress. は: No apparent cracking occurs, but cracks are slightly generated when bending is applied with a stronger stress. Δ: There is no apparent cracking, but cracking occurs when bending is applied with a stronger stress. ×: Apparent cracking is observed.

<Corrosion of aluminum> Aluminum plate (50 mm × 2
0mm x 1mm) 200ml of antifouling agent composition for heat exchanger fins (60 ° C)
Was immersed for 14 days, the change in mass was measured, and the corrosion was evaluated according to the following criteria. At this time, the larger the absolute value of the mass change, the more the corrosion is progressing. ○: Mass change less than ± 1 mg / cm ² (no corrosion) ×: Mass change ± 1 mg / cm ² or more (corrosion)

[0052]

[Table 1]

AG: alkyl glucoside (a mixture of straight chain alkyl groups having 12 and 14 carbon atoms, average sugar condensation degree 1.2 [mixture of condensation degrees 1 and 2]) polyoxyethylene alkyl ether: average carbon number 13
EO added to an average of 7 moles of the straight-chain secondary alcohol.・ Sodium polyoxyethylene lauryl ether sulfate: average number of moles of added EO 4 ・ Polymer 1: 8: 2 (molar ratio) copolymer of diallyldimethylammonium chloride compound and acrylic acid, weight average molecular weight 1.7 million (Malcoat manufactured by Calgon) 280) Polymer 2: copolymer of diallyldimethylammonium chloride compound and acrylamide (mole ratio) 3: 7 (molar ratio), weight-average molecular weight 5,000,000 (Malcoat 550 manufactured by Calgon) Polymer 3: methacryloylaminopropyl-N, N Radical polymerization of N, N-trimethylammonium chloride and acrylamide at a molar ratio of 7/3, weight average molecular weight 470,000-Antibacterial agent 1: cocoalkyldimethylbenzylammonium chloride-Antibacterial agent 2: didecyldimethylammonium chloride-Antibacterial Agent 3: Benzethonium chloride [Wako reagent, cationic compound having the following structure]

[0054]

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──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C09D 133/24 C09D 133/24 157/12 157/12 F28F 19/04 F28F 19/04 Z // C08F 18 / 02 C08F 18/02 20/10 20/10 20/56 20/56 26/02 26/02 (72) Inventor Kazunori Tsukuda 1334 Minato, Wakayama-shi, Wakayama Prefecture Kao Corporation Research Center (72) Inventor Komatsu Yosuke 1334 Minato, Wakayama City, Wakayama Pref. JB13 JB14 JB29 JC09 JC23 KA07 MA11 MA14 NA03 NA05 PA06 4J100 AG08P AL08P AM21P AN01P AN03P BA32P CA01 CA04 JA57

Claims (5)

[Claims] 1. A thermo-polymer containing a polymer having a weight average molecular weight of 1,000 to 6 million obtained by polymerizing a polymerizable unsaturated compound having one or more quaternary ammonium groups or tertiary amino groups in the molecule. An antifouling composition for exchanger fins. 2. The polymerizable unsaturated compound is represented by the following general formula (1)
2. The antifouling composition for heat exchanger fins according to claim 1, which is at least one compound selected from the compounds of (2) and (2). Embedded image [In the formula, R ¹ , R ² , and R ³ are each independently a hydrogen atom, a hydroxyl group, or an alkyl group having 1 to 3 carbon atoms. X is carbon number 1 ~
12 alkylene ^{group, -COOR 7 -, - CONHR 7} -, - OCOR 7 - or -R
⁸ -OCO-R ⁷ - from a group selected, wherein R ^7, R ⁸ are each independently an alkylene group having 1 to 5 carbon atoms. R ⁴ is an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group or R ¹
R ² C = C (R ³ ) -X-. R ⁵ is an alkyl or hydroxyalkyl group or a benzyl group having 1 to 3 carbon atoms. R ⁶ is an alkyl group or a benzyl group having 1 to 10 carbon atoms which may be substituted with a hydroxy group, a carboxy group, a sulfonic acid group or a carbonate group, and R ⁶ is an alkyl group, a hydroxyalkyl group or a benzyl group. In this case, Y ^- represents an anionic group. When R ⁶ contains a carboxy group, a sulfonic acid group or a sulfate group, Y ⁻ does not exist, and these groups in R ⁶ become anions. ] 3. The antifouling composition for heat exchanger fins according to claim 1, further comprising one or more compounds selected from the compounds represented by the following general formulas (3) and (4). _{^{R 9 - (OR 10) p}} G q (3) wherein, R ⁹ is an alkyl group having 6 to 18 carbon atoms linear or branched, alkenyl group, or alkylphenyl group, R ¹⁰ is 2 carbon atoms 4, an alkylene group, G is a residue derived from a reducing sugar having 5 or 6 carbon atoms, p is a number having an average value of 0 to 6, and q is an average value of 1.
Indicates the number of ~ 10. [Chemical formula 2] [In the formula, R ¹¹ is an alkyl group or alkenyl group having 3 to ¹⁸ carbon atoms, and R ¹³ and R ¹⁴ are an alkyl group or hydroxyalkyl group having 1 to 3 carbon atoms. R ¹² is an alkylene group having 1 to 5 carbon atoms. A is a group selected from -COO-, -CONH-, -OCO-, -NHCO-, -O-, and r is a number of 0 or 1. ] 4. The antifouling composition for heat exchanger fins according to claim 1, further comprising an antimicrobial compound having at least one quaternary ammonium group and having a molecular weight of less than 1,000. 5. An antifouling article for heat exchanger fins, wherein the antifouling composition for heat exchanger fins according to claim 1 is filled in a spray container.