JPH109585A - Oil splash prevention plate for gas range - Google Patents

Abstract

(57) [Summary] (with correction) [PROBLEMS] An object of the present invention is to provide oil repellency and water repellency that are excellent in oil repellency and water repellency, hardly stain oil, and easy to remove attached oil. The present invention provides a gas range oil scattering prevention plate having an antifouling function. An oil-repellent material is provided on the surface of an oil scattering prevention plate of a gas range.
By coating a coating agent having water repellency, for example, a coating agent containing a fluorine atom, an oil repellent, water repellent, and antifouling function is imparted to the oil scattering prevention plate of the gas range.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil spill-prevention plate for an aluminum gas cooker having an oil-repellent and water-repellent function having an oil-repellent and water-repellent coating on the surface.

[0002]

2. Description of the Related Art Conventionally, in workplaces in the food industry and kitchens of ordinary households, oil and water emitted during processing and cooking are scattered and flow out to the surroundings, and the surrounding cooking utensils, cooking equipment, etc., and the kitchen wall surface. In order to prevent the floor, ceiling, etc. from being contaminated, use non-combustible materials such as aluminum around the pans on the gas stove,
It is used to prevent oil and broth from being scattered from cooking utensils such as pots and pans, so as not to pollute the surroundings.
However, the aluminum surface is liable to be contaminated because oil easily adheres thereto, and it is difficult to completely wipe off the adhered oil, so that dirt remains on the oil splash prevention plate of the gas range. Therefore, when the used oil splash prevention plate is stored and used again, there is a problem that the stored place is contaminated by the attached oil stains, etc. In addition, oil stains and the like are attached in layers so that they are dirty in appearance, have a feeling of being unclean even though they are a place where food is handled, and are also unfavorable in terms of food hygiene. As a result, it has been difficult to use the oil scattering prevention plate of this gas range repeatedly or for a long period of time.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide an oil repellent, water repellent, and antifouling function that is excellent in oil repellency and water repellency, hardly causes oil stains, and easily removes attached oil. An object of the present invention is to provide an oil scattering prevention plate for a gas range having the following.

[0004]

Means for Solving the Problems The present inventors have solved the above-mentioned problems by coating a surface of an oil scattering prevention plate of a gas range with a coating agent having oil repellency and water repellency.

[0005] That is, the present invention is an oil scattering prevention plate for a gas range in which an oil-repellent and water-repellent coating is applied to the surface of an aluminum sheet. Further, the present invention is the oil scattering prevention plate of the above gas range, wherein the oil-repellent and water-repellent coating agent is a coating agent containing a fluorine atom-containing polymer. Further, the present invention provides the oil-repellent and water-repellent coating agent, wherein the fluorine-containing monomer (a) having a carbon-carbon unsaturated double bond and a perfluoroalkyl group is 20 to 80% by weight, (B) 80 to 20 having a crosslinkable functional group
A polymer (A) comprising 0 to 50% by weight of a monomer (c) having a carbon-carbon unsaturated double bond other than (a) and (b); 20 to 100% by weight of a monomer (b) having a crosslinkable functional group, and 0 to 80% by weight of a monomer (c) having a carbon-carbon unsaturated double bond other than (a) and (b) And a polymer (B).

Further, the present invention is the oil splash prevention plate of the above gas range, wherein the crosslinkable functional group of the monomer (b) is a hydrolyzable silyl group. Further, the present invention provides a monomer (b) having a carbon-carbon unsaturated double bond and a cross-linkable functional group, wherein the cross-linkable functional group is a carboxyl group, an isocyano group, an epoxy group, an N-methylol group, The oil scattering prevention plate of the above gas range, wherein the plate is at least one functional group selected from an alkoxymethyl group and a hydroxyl group.

Further, the present invention relates to a polymer (A) and a polymer (B), wherein the total amount of the fluorine-containing monomer (a) is 0.1%.
It is an oil scattering prevention plate of the above-mentioned gas range which is 10 to 10% by weight. Further, the present invention provides an oil splash prevention plate of the above gas range, which contains, as a crosslinking agent, at least one compound having a reactive functional group capable of reacting with the crosslinking functional group of the polymer (A) and the polymer (B). It is. Further, the present invention is an oil scattering prevention plate of the above-mentioned gas range containing a crosslinking catalyst.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The oil splash prevention plate of the present invention is an aluminum oil splash prevention plate which is erected around a pan on a gas range to prevent oil splash to the surroundings. An oil-splash-preventing plate for a gas range characterized by having an oil-repellent, water-repellent, and antifouling function by applying an oil-repellent and water-repellent coating. As the oil-repellent and water-repellent coating agent applied to the surface of the oil scattering prevention plate of the present invention, a coating agent containing a fluorine atom-containing polymer is preferably used. Specifically, as a coating agent containing a fluorine atom-containing polymer, for example, 20 to 80% by weight of a fluorine-containing monomer (a) having a carbon-carbon unsaturated double bond and a perfluoroalkyl group,
And (b) 80 to 20% by weight of a monomer having a functional group capable of crosslinking with a carbon-carbon unsaturated double bond, and a monomer having a carbon-carbon unsaturated double bond other than (a) and (b) (C) a polymer (A) consisting of 0 to 50% by weight, a monomer (b) having a functional group capable of crosslinking with a carbon-carbon unsaturated double bond, 20 to 100% by weight, (a) and (a) Monomers (c) having a carbon-carbon unsaturated double bond other than b) 0 to 80
A coating agent composed of the polymer (B) by weight% can be used.

As an example of the fluorine-containing monomer (a) having a perfluoroalkyl group having a carbon-carbon unsaturated double bond used in the component (A) constituting the oil-repellent and water-repellent coating agent, perfluoromethyl Methyl (meth) acrylate, perfluoroethylmethyl (meth) acrylate, 2-perfluorobutylethyl (meth) acrylate, 2-perfluorohexylethyl (meth) acrylate, 2-perfluorooctylethyl (meth) acrylate, 2- Perfluoroisononylethyl (meth) acrylate, 2-perfluorononylethyl (meth) acrylate, 2-perfluorodecylethyl (meth) acrylate, perfluoropropylpropyl (meth) acrylate, perfluorooctylpropyl (meth) acrylate, Par Le Oro octyl amyl (meth) acrylate, perfluoroalkyl (meth) acrylates having a perfluoroalkyl group having 1 to 20 carbon atoms such as perfluorooctyl undecyl (meth) acrylate;

Perfluorobutylethylene, perfluorohexylethylene, perfluorooctylethylene,
Perfluoroalkyl such as perfluorodecylethylene and alkylenes may be used, and depending on the required performance, one of these may be used alone, or two or more thereof may be used in combination and used at a copolymerization ratio of 20 to 80% by weight. However, in order to obtain sufficient water repellency and oil repellency, it is desirable to copolymerize at least 40% by weight, and to dissolve in a solvent containing no halogen atom, the copolymerization ratio should be 60% by weight or less. Is desirable.

The monomer (b) having a carbon-carbon unsaturated double bond and a crosslinkable functional group is used for crosslinking after coating to bring the coating film into close contact with the substrate. Examples of the crosslinkable functional group include a hydrolyzable silyl group, a carboxyl group, an isocyano group, an epoxy group, an N-methylol group, and an N-
Examples thereof include an alkoxymethyl group and a hydroxy group. Particularly, when a monomer having a hydrolyzable silyl group is used, a coating film having excellent adhesion can be obtained. Examples of the monomer (b) having a hydrolyzable silyl group include (meth) acryloxyalkylalkoxy such as γ- (meth) acryloxypropyltrimethoxysilane and γ- (meth) acryloxypropylmethyldimethoxysilane. Silane, (meth) acryloxyalkylalkoxyalkylsilane, trimethoxyvinylsilane, dimethoxyethylsilane, triethoxyvinylsilane, triethoxyallylsilane, vinylmethyldimethoxysilane, vinylmethyldiethoxysilane, vinyltris (2-methoxyethoxy) silane and the like. Can be

Further, examples of the monomer (b) having a carboxyl group include acrylic acid, methacrylic acid, crotonic acid, itaconic acid, maleic acid, styrene sulfonic acid and the like. Examples of the monomer (b) having an isocyano group include (meth) acryloyloxyethyl isocyanate, (meth) acryloyloxypropyl isocyanate, 2-hydroxyethyl (meth) acrylate, 4-hydroxybutyl ( Examples thereof include those obtained by reacting a hydroxy (meth) acrylate such as meth) acrylate with a polyisocyanate such as toluene diisocyanate, isophorone diisocyanate, or coronate L.

Examples of the monomer (b) having an epoxy group include glycidyl methacrylate, glycidyl cinnamate, glycidyl allyl ether, glycidyl vinyl ether, vinylcyclohexane monoepoxide, and 1,3-butadiene monoepoxide. .

Examples of the monomer (b) having an N-methylol group or an N-alkoxymethyl group include:
N-monoalkoxymethyl groups such as methylol (meth) acrylamide, N-methoxymethyl (meth) acrylamide, N-ethoxymethyl (meth) acrylamide, N-propoxymethyl (meth) acrylamide, and N-butoxymethyl (meth) acrylamide (Meth) acrylamide, N, N-dimethylol (meth) acrylamide, N, N-di (methoxymethyl) (meth)
Acrylamide, N, N-di (ethoxymethyl) (meth) acrylamide, N, N-di (propoxymethyl)
(Meth) acrylamide having an N, N-dialkoxymethyl group such as (meth) acrylamide and N, N-di (butoxymethyl) (meth) acrylamide.

Further, a monomer (b) having a hydroxyl group
Examples of 2-hydroxyethyl (meth) acrylate, 1-hydroxypropyl (meth) acrylate,
2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate, polytetramethylene glycol mono (meth) acrylate, hydroxystyrene and the like. .

Depending on the required performance, one or more of these can be used in combination. Further, those used in the polymer (A) and those used in the polymer (B) are not necessarily required to be the same. The monomer (b) is used in the polymer (A) at a copolymerization ratio of 80 to 20% by weight. If less than 20% by weight,
If sufficient adhesion to the substrate is not obtained, and if it is more than 80% by weight, water repellency and oil repellency decrease. In the polymer (B), it is used at a copolymerization ratio of 20 to 100% by weight. If it is less than 20% by weight, sufficient adhesion to the substrate cannot be obtained.

The monomer (c) having a carbon-carbon unsaturated double bond other than (a) and (b) used in the above oil-repellent and water-repellent coating agents has hardness, toughness, scratch resistance and gloss. It is used for imparting physical properties such as improvement. As this monomer
(i) (meth) acrylic acid derivative, (ii) aromatic vinyl monomer, (iii) olefinic hydrocarbon monomer, (iv) vinyl ester monomer, (v) vinyl halide monomer, vi) vinyl ether monomers and the like. (i) Examples of (meth) acrylic acid derivatives include (meth) acrylonitrile, (meth) acrylate, methyl (meth) acrylate, butyl (meth) acrylate, ethylhexyl (meth) acrylate, stearyl (meth)
Acrylate, benzyl (meth) acrylate, 2,
2,3,3-tetrafluoropropyl (meth) acrylate, 1H, 1H5H-octafluoropentyl (meth) acrylate, 1H, 1H, 7H-dodecafluoroheptyl (meth) acrylate, 1H, 1H, 9H-hexadecafluorononyl (Meth) acrylate, 2,
Alkyl (meth) acrylates, such as 2,3,4,4,4-hexafluorobutyl (meth) acrylate, in which a part of hydrogen has been substituted by fluorine are mentioned. (ii) Examples of aromatic vinyl monomers include styrenes in which some hydrogens are fluorine-substituted, such as styrene, methylstyrene, ethylstyrene, chlorostyrene, monofluoromethylstyrene, difluoromethylstyrene, and trifluoromethylstyrene. Etc. are raised. (iii) Examples of the olefinic hydrocarbon monomer include ethylene, propylene, butadiene, isobutylene, isoprene, and 1,4-pentadiene. (iv) Examples of the vinyl ester monomer include vinyl acetate. (v) Examples of vinyl halide monomers include vinyl chloride, vinylidene chloride, monofluoroethylene, difluoroethylene, trifluoroethylene and the like. (vi) Examples of the vinyl ether monomer include vinyl methyl ether and the like. Two or more of these may be used.

The monomer (c) is based on the polymer (A)
It is used at 0 to 30% by weight. Further, it is used at 0 to 80% by weight based on the polymer (B). If it is more than 80% by weight, sufficient adhesion to the substrate cannot be obtained. Further, the compatibility with the polymer (A) decreases, and a uniform and good coating film cannot be obtained.

The polymer (A) and the polymer (B) can be obtained by a known method, for example, solution polymerization. As the solvent to be used, methanol, ethanol, propanol, butanol, alcohols such as ethylene glycol methyl ether, diethylene glycol methyl ether, acetone, methyl ethyl ketone, methyl isobutyl ketone, ketones such as cyclohexanone, tetrahydrofuran,
Dioxane, ethylene glycol dimethyl ether, ethers such as diethylene glycol dimethyl ether, hexane, heptane, hydrocarbons such as octane,
It is possible to use aromatics such as benzene, toluene, xylene and cumene, and esters such as ethyl acetate and butyl acetate. The solvent may be a mixture of two or more. The charged concentration of the monomer during the synthesis is preferably from 0 to 80% by weight.

Examples of the polymerization initiator include ordinary peroxides or azo compounds such as benzoyl peroxide, azoisobutylvalenonitrile, azobisisobutyronitrile, di-t-butyl peroxide, t-butyl perbenzoate, T-butyl peroctoate, cumene hydroxyperoxide or the like is used, and the polymerization temperature is 50 to 140.
° C, preferably 70 to 140 ° C. The preferred average molecular weight of the obtained polymer is 2,000 to 100,000 for both the polymer (A) and the polymer (B).

In the oil-repellent and water-repellent coating agents, various cross-linking agents can be used as needed in order to cross-link the crosslinkable functional groups in the composition.
Typical crosslinking agents include melamine compounds having an alkylol group or an alkoxy group such as hexamethylolated melamine, hexamethoxymethylated melamine, and hexabutoxymethylated melamine, cyanuric acid, ammelide, melamine, benzoguanamine, diethanolamine, triethanolamine, and the like. Ethanolamine, diaminopyridine, benzoguanamine resin, methanol-modified melamine resin, amino resin such as urea resin, hydrazine, hydrazine compounds such as ADH, ethylenediamine, propanediamine,
Butanediamine, pentanediamine, hexanediamine, diaminooctane, diaminodecane, diaminododecane, 2,5-dimethyl-2,5-hexamethylenediamine, polyoxypropylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, etc. Chain diamine, mensendiamine, isophoronediamine, bis (4-amino-3-methyldicyclohexyl) methane, diaminodicyclohexylmethane, 3,9-bis (3-aminopropyl) -2,4,
8,10-tetraoxaspiro [5,5] undecane,
1,4-bis (2-amino-2-methylpropyl) piperazine, m-xylenediamine, polycyclohexylpolyamine, bis (aminomethyl) bicyclo [2.2.
1] Cyclic diamines such as heptane and methylenebis (furanmethanamine) 1,6-hexamethylenediamine, polyamines such as triethylenetetramine, tetraethylenepentamine and diethylenetriamine;

Toluylene diisocyanate, naphthylene-1,5-diisocyanate, o-toluylene diisocyanate, diphenylmethane diisocyanate, trimethylhexamethylene diisocyanate, isophorone diisocyanate, 4,4'-diphenylmethane diisocyanate, hexamethylene diisocyanate, m-xylene diisocyanate, p- -Xylene diisocyanate,
Diisocyanates such as lysine diisocyanate, hydrogenated 4,4'-diphenylmethane diisocyanate, hydrogenated tolylene diisocyanate, or isocyanate adducts of these with glycols or diamines, triphenylmethane triisocyanate, polymethylene polyphenylisocyanate , Polyvalent isocyanates such as Coronate L, oxalic acid, malonic acid, succinic acid, glutaric acid, hexanedioic acid, citric acid, maleic acid, methylnadic acid, dodecenylsuccinic acid, sebacic acid, pyromellitic acid, hexahydrophthalic acid, tetrahydro Dicarboxylic acids such as phthalic acid, and their anhydrides; dialdehydes such as glioxal and terephthalaldehyde; amino acids such as glycine and alanine; and their lactams, citric acid, 12 -Hydroxystearic acid, 6-
Hydroxycarboxylic acids such as hydroxypentanoic acid and lactones thereof,

Diols such as 1,4-butanediol and 2,3-butanediol, 1,1,1-trimethylolpropane ethylene glycol, diethylene glycol, glycerin, erythritol, arabitol, xylitol, sorbitol, dulcitol, mannitol, catechol , Resorcin, hydroquinone, guaiacol, hexyl resorcin, pyrogallol, trihydroxybenzene, phloroglucin, polyhydric alcohols such as dimethylolphenol, or polyhydric phenolic compounds, or alkoxy modified products thereof, ethylene glycol diglycidyl ether, propylene glycol di Glycidyl ether, polyethylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, propylene Glycol diglycidyl ether, neopentyl glycol diglycidyl ether,
Bisepoxy compounds such as 1,6-hexanediol diglycidyl ether and phthalic acid diglycidyl ester;
Made by Yuka Shell Epoxy Co., Ltd., Epicoat 801 and 8
02,807,815,827,828,834,81
5X, 815XA1, 828EL, 828XA, 100
1, 1002, 1003, 1055, 1004, 100
4AF, 1007, 1009, 1010, 1003F,
1004F, 1005F, 1100L, 834X90,
1001B80, 1001X70, 1001X75, 1
001T75, 5045B80, 5046B80, 50
48B70, 5049B70, 5050T60, 505
0, 5051, 152, 154, 180 S65, 180
H65, 1031S, 1032H60, 604, 157
Examples include epoxy resins such as S70, pyrophosphoric acid, ethyl phosphite, bisphenol A-modified polyphosphoric acid, phosphorus compounds such as triphenyl phosphite, and phosphoric dichloride compounds.

When a monomer (b) having a carboxyl group is used among these crosslinking agents, a phenol resin,
It is preferable to use amino resins, diamines, polyamines, diisocyanates, bisepoxy compounds, epoxy resins and the like. When the monomer (b) having an isocyano group is used, a hydrazine compound, a diamine, a dicarboxylic acid and its anhydride, a diol, a polyhydric alcohol or a polyphenol compound, a bisepoxy compound, an epoxy resin Use of such as is preferred. When the monomer (b) having an epoxy group is used, dicarboxylic acid and its anhydride, polyhydric alcohol or polyhydric phenolic compound, or an alkoxy-modified product thereof, amino resin, diisocyanate, polyisocyanate , Amino acids and their lactams, hydroxycarboxylic acids and their lactones, diamines and polyamines are preferred.

When the monomer (b) having an N-methylol group or an N-alkoxymethyl group is used,
It is preferable to use a dicarboxylic acid, a melamine compound having an alkylol group or an alkoxy group, an amino resin compound, or the like. When the monomer (b) having a hydroxyl group is used, it is preferable to use an amino resin, a diamine, a polyamine, a diisocyanate, a dialdehyde, a bisepoxy compound, an epoxy resin, a phosphorus compound, a phosphoric acid dichloride compound, or the like. Two or more of these crosslinking agents may be used, and the total amount used is 100%.
1 to 500% by weight, preferably 10 to 2% by weight
It is in the range of 00% by weight.

In the above oil-repellent and water-repellent coating agents, a crosslinking reaction of a crosslinkable functional group in the composition or a crosslinking reaction between the crosslinkable functional group and the crosslinking agent is promoted. Various crosslinking catalysts can be used depending on the functional group. Representative crosslinking catalysts include aluminum triacetylacetonate, iron triacetylacetonate, manganese tetraacetylacetonate, nickel tetraacetylacetonate, chromium hexaacetylacetonate, titanium tetraacetylacetonate,
Metal complex compounds such as cobalt tetraacetylacetonate, aluminum ethoxide, aluminum propoxide, aluminum butoxide, titanium ethoxide, metal alkoxides such as titanium propoxide, titanium butoxide, sodium acetate, tin octylate, lead octylate,
Metal salt compounds such as cobalt octylate, zinc octylate, calcium octylate, lead naphthenate, cobalt naphthenate, dibutyltin dioctate, dibutyltin dilaurate, dibutyltin malate dibutyltin di (2-ethylhexoate), and formic acid Acetic acid, propionic acid, p-toluenesulfonic acid, trichloroacetic acid, phosphoric acid, monoalkyl phosphoric acid, dialkyl phosphoric acid, phosphoric acid ester of β-hydroxyethyl (meth) acrylate, monoalkyl phosphorous acid, dialkyl phosphorous acid Acidic compounds such as p-
Acids such as toluenesulfonic acid, phthalic anhydride, benzoic acid, benzenesulfonic acid, dodecylbenzenesulfonic acid, formic acid, acetic acid, itaconic acid, oxalic acid, maleic acid and their ammonium salts, lower amine salts, polyvalent metal salts, Sodium hydroxide, lithium chloride, diethyl zinc,
Organometallic compounds such as tetra (n-butoxy) titanium, dicyclohexylamine, triethylamine, N,
Examples thereof include amines such as N-dimethylbenzylamine, N, N, N ', N'-tetramethyl-1,3-butanediamine, diethanolamine, triethanolamine, and cyclohexylethylamine.

When a monomer (b) having a hydrolyzable silyl group is used among these crosslinking catalysts, it is preferable to use a metal complex compound, a metal alkoxide, a metal salt compound, an acidic compound, or the like. In particular, the use of tin compounds such as dibutyltin diacetate, dibutyltin dioctate, dibutyltin dilaurate, dibutyltin dimaleate, and p-toluenesulfonic acid is preferred. When the monomer (b) having a carboxyl group is used, it is preferable to use acids and their ammonium salts, lower amine salts, polyvalent metal salts, and the like. A monomer (b) having an isocyano group;
When is used, it is preferable to use amines, metal salt compounds and the like.

When the monomer (b) having an epoxy group is used, it is preferable to use an organometallic compound, an amine or the like. When a monomer (b) having an N-methylol group or an N-alkoxymethyl group is used,
The use of acids and their ammonium salts, lower amine salts, polyvalent metal salts and the like is preferred. When the monomer (b) having a hydroxyl group is used, it is preferable to use an acidic compound, an acid and their ammonium salts, lower amine salts, polyvalent metal salts, and the like.

Two or more of these crosslinking catalysts may be used, and the total amount used is in the range of 0.01 to 10% by weight, preferably 0.1 to 5% by weight, based on 100% by weight of the resin composition. It is.

In constituting the oil-repellent and water-repellent coating agent, a filler, a thixotropy-imparting agent, a coloring pigment, an extender pigment, and a dye may be used as long as the effects of the oil-repellent and water-repellent coating agent are not impaired. , Antioxidants, antioxidants, antistatic agents, flame retardants, thermal conductivity improvers, plasticizers, anti-sagging agents, antifouling agents, preservatives, bactericides, defoamers, leveling agents, curing agents, etc. Various additives may be added.

The above oil-repellent and water-repellent coating agents are prepared by mixing and dissolving the polymer (A), the polymer (B), and, if necessary, a crosslinking agent, a crosslinking catalyst, a silane coupling agent and additives in a solvent. can get. Solvents are methanol, ethanol,
Alcohols such as propanol, butanol, ethylene glycol methyl ether and diethylene glycol methyl ether; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone;
Ethers such as tetrahydrofuran, dioxane, ethylene glycol dimethyl ether and diethylene glycol dimethyl ether; hydrocarbons such as hexane, heptane and octane; aromatics such as benzene, toluene, xylene and cumene; esters such as ethyl acetate and butyl acetate. Used from inside according to the composition of the resin. Two or more solvents may be used. The mixing method is not particularly limited, but usually, the polymer solution used at the time of polymerization may be mixed as it is and stirred with a stirring blade, a shaking stirrer, a rotary stirrer, or the like. In order to improve coatability and the like, a solvent may be further added or concentrated. The mixing ratio of the polymer (A) and the polymer (B) is such that the fluorine-containing monomer (a)
It is preferable that the content is 0.1 to 10% by weight of the total of the polymer (A) and the polymer (B). If it is less than 0.1% by weight, sufficient water and oil repellency cannot be obtained, and
If it is larger than the weight%, the cost increases.

The coating agent thus obtained is applied to an aluminum substrate, and has a coating having functions such as excellent adhesion to the substrate, water repellency and oil repellency, antifouling property and removal of adhered oil. Done. The method of application is not particularly limited, but application can be performed by dip coating, spray coating, brush coating, an applicator, a bar coater, or the like. The applied coating agent can be air-dried or heated at 30 to 220 ° C. for several seconds to several weeks to obtain a coating film having excellent adhesion to a substrate.

[0033]

According to the oil scattering prevention plate of the present invention, the difference in surface energy between oil or water and the surface of the oil scattering prevention plate is increased by coating the surface with a coating agent containing fluorine atoms having a low surface energy. Oil and water can be easily repelled. Thus, it is possible to prevent oil and moisture from adhering to the surface of the oil scattering prevention plate, prevent contamination of the periphery of the pot due to oils and fats or boiling water on the surface of the oil scattering prevention plate, and use the oil scattering prevention plate repeatedly. It can be used for a long time.

[0034]

Hereinafter, the present invention will be described in detail with reference to examples. (Synthesis Example A1) 50 g of 2- (perfluorooctyl) ethyl methacrylate, 50 g of γ-methacryloxypropyltrimethoxysilane, and 200 g of ethyl acetate were charged into a four-necked flask equipped with a cooling tube, a stirrer, and a thermometer, and a nitrogen gas flow was applied. The temperature was raised to 80 ° C. with stirring under reduced pressure, 1.6 g of azobisisobutyronitrile was added, polymerization was carried out for 2 hours, and 0.4 part of azobisisobutyronitrile was further added, and polymerization was carried out for 2 hours. Weight average molecular weight of about 15,000
Thus, a polymer (A1) solution was obtained. (Synthesis Example A2) A four-necked flask equipped with a condenser, a stirrer, and a thermometer was charged with 40 g of 2- (perfluorooctyl) ethyl methacrylate, 40 g of γ-methacryloxypropyltrimethoxysilane, 20 g of methylmethyl methacrylate, and 200 g of isopropyl alcohol. The mixture was heated to 80 ° C. while stirring under a nitrogen stream, and 1.6 g of azobisisobutyronitrile was added to carry out a polymerization reaction for 2 hours. Further, 0.4 part of azobisisobutyronitrile was added. Polymerization was performed for 2 hours to obtain a polymer (A2) solution having a weight average molecular weight of about 12,000.

(Synthesis Example A3) 50 g of 2- (perfluorooctyl) ethyl methacrylate, 50 g of 2-methacryloxyethyl methacrylate, and 200 g of ethyl acetate were charged into a four-necked flask equipped with a condenser, a stirrer, and a thermometer. The temperature was raised to 80 ° C. while stirring under a stream of air, 1.6 g of azobisisobutyronitrile was added, a polymerization reaction was carried out for 2 hours, and azobisisobutyronitrile 0.4 was further added.
And polymerized for 2 hours to give a weight average molecular weight of about 15.0.
Thus, a polymer (A3) solution of No. 00 was obtained.

(Synthesis Example A4) 45 g of 2- (perfluorooctyl) ethyl methacrylate, 55 g of glycidyl methacrylate, and 200 g of ethyl acetate were charged into a four-necked flask equipped with a condenser, a stirrer, and a thermometer, and stirred under a nitrogen stream. While the temperature was raised to 80 ° C., 1.6 g of azobisisobutyronitrile was added, polymerization was carried out for 2 hours, and 0.4 part of azobisisobutyronitrile was further added, polymerization was carried out for 2 hours, and weight average molecular weight was obtained. About 13,000 polymer (A4) solutions were obtained.

(Synthesis Example A5) 45 g of 2- (perfluorooctyl) ethyl methacrylate, 55 g of N, N-di (methoxymethyl) methacrylamide, and 200 g of isopropyl alcohol were equipped with a cooling tube, a stirrer, and a thermometer.
The temperature was raised to 80 ° C. with stirring, 1.6 g of azobisisobutyronitrile was added, polymerization was carried out for 2 hours, and 0.4 part of azobisisobutyronitrile was further added. Polymerization for about 1 hour, weight average molecular weight about 1
8,000 polymer (A5) solutions were obtained.

(Synthesis Example B1) γ-methacryloxypropyltrimethoxysilane 100 g, ethyl acetate 200 g
Was charged into a four-necked flask equipped with a condenser, a stirrer, and a thermometer, and heated to 80 ° C. while stirring under a nitrogen stream, 1.6 g of azobisisobutyronitrile was added, and the polymerization reaction was performed for 2 hours. And azobisisobutyronitrile 0.1.
4 parts were added and polymerized for 2 hours to obtain a weight average molecular weight of about 10,
000 of the polymer (B1) was obtained.

(Synthesis Example B2) 70 g of γ-methacryloxypropyltrimethoxysilane, 30 g of methyl methacrylate, and 200 g of isopropyl alcohol were charged into a four-necked flask equipped with a condenser, a stirrer, and a thermometer, and stirred under a nitrogen stream. While the temperature was raised to 80 ° C., 1.6 g of azobisisobutyronitrile was added, polymerization was carried out for 2 hours, and 0.4 part of azobisisobutyronitrile was further added, polymerization was carried out for 2 hours, and the weight average molecular weight was about 14,000 polymer (B2) solutions were obtained.

(Synthesis Example B3) 98 g of γ-methacryloxypropyltrimethoxysilane, 2 g of acrylic acid, and 200 g of isopropyl alcohol were charged into a four-necked flask equipped with a condenser, a stirrer, and a thermometer, and stirred under a nitrogen stream. While the temperature was raised to 80 ° C., 1.6 g of azobisisobutyronitrile was added, polymerization was carried out for 2 hours, and 0.4 part of azobisisobutyronitrile was further added, polymerization was carried out for 2 hours, and the weight average molecular weight was about 11,000 polymer (B3) solutions were obtained.

(Synthesis Example B4) 100 g of γ-methacryloxypropyltrimethoxysilane and 200 g of isopropyl alcohol were charged into a four-necked flask equipped with a condenser, a stirrer and a thermometer, and stirred at 80 ° C. under a nitrogen stream.
Then, 1.6 g of azobisisobutyronitrile was added, polymerization was carried out for 2 hours, and 0.4 part of azobisisobutyronitrile was further added, polymerization was carried out for 2 hours, and the weight average molecular weight was about 9,000. A polymer (B4) solution was obtained.

(Synthesis Example B5) 50 g of 2-methacryloxyethyl methacrylate, 50 g of butyl methacrylate 50
g and 200 g of ethyl acetate were placed in a four-necked flask equipped with a condenser, a stirrer, and a thermometer, and heated to 80 ° C. while stirring under a nitrogen stream, and 1.6 g of azobisisobutyronitrile was added. A polymerization reaction was carried out for 2 hours, and 0.4 part of azobisisobutyronitrile was further added, followed by polymerization for 2 hours to obtain a polymer (B5) solution having a weight average molecular weight of about 14,000.

(Synthesis Example B6) 50 g of glycidyl methacrylate, 50 g of butyl methacrylate, 20 g of ethyl acetate
0 g was charged into a four-necked flask equipped with a condenser, a stirrer, and a thermometer. The temperature was raised to 80 ° C. while stirring under a nitrogen stream, and 1.6 g of azobisisobutyronitrile was added. And further add 0.4 parts of azobisisobutyronitrile, and polymerize for 2 hours to obtain a weight average molecular weight of about 1
7,000 polymer (B6) solutions were obtained.

Synthesis Example B7 30 g of N, N-di (methoxymethyl) methacrylamide, methyl methacrylate 7
0 g and 200 g of isopropyl alcohol were charged into a four-necked flask equipped with a cooling tube, a stirrer, and a thermometer, the temperature was raised to 80 ° C. with stirring, 1.6 g of azobisisobutyronitrile was added, and the polymerization reaction was performed for 2 hours. Was further added, and 0.4 parts of azobisisobutyronitrile was added, followed by polymerization for 2 hours to obtain a polymer (B7) solution having a weight average molecular weight of about 20,000.

(Examples 1 to 6) The respective solutions of the polymer (A) and the polymer (B) were mixed so that the conversion of the solid content became the ratio shown in Table 1, and the mixture was overnight on a rotary shaker. After stirring,
If necessary, the catalysts shown in Table 1 were added, and further diluted with a solvent to a solid content concentration of 5%, and applied to an aluminum sheet having a thickness of 100 μm using a 1 mil applicator. Then, after leaving at room temperature for 30 minutes, it was heated at 150 ° C. for 10 minutes.
Various tests were performed on the aluminum sheet coated in this manner. The test method is as follows. Contact angle 1 (water repellency): The contact angle of the surface of the aluminum sheet coated with pure water was measured with a contact angle meter. Contact angle 2 (oil repellency): The contact angle on the surface of the aluminum sheet coated with n-octane was measured with a contact angle meter. Oil adhesion test: A liquid vegetable oil was dropped on a coated aluminum sheet, immediately wiped off with a paper waste, and the remaining oil was visually evaluated. Fire test: 300 ° C coated aluminum sheet
The change (ignition, smoking, and burning) of the aluminum sheet when exposed to direct heat in a gas burner was visually evaluated. Peeling test: After cross-cutting the coating film, the cellophane tape was peeled off, and the area where the coating film was peeled was indicated by%. Table 2 shows the results
Shown in

(Comparative Example 1) A test similar to that of the example was performed using an aluminum sheet that had not been subjected to water- and oil-repellent coating. The results are shown in Table 2.

Table 1 Example Polymer (A) Polymer (B) ) Catalyst (g) (g) (g) １1 Polymer A1 0.2 Polymer B1 9.8 Paratoluenesulfonic acid 0.1 2 Polymer A1 0.2 Polymer B2 9.8 Paratoluenesulfonic acid 0.13 Polymer A1 0.2 Polymer B3 9.8 Paratoluenesulfonic acid 0.14 Polymer A1 0.2 Polymer B4 9.8 Paratoluenesulfonic acid 0.15 Polymer A2 0.2 Polymer B5 9.8 Dibutyltin dilaurate 0.16 Polymer A3 0.2 Polymer B6 9.8 Triethylenetetramine 1.27 Polymer A4 0.2 Polymer B7 9.8 Paratoluenesulfonic acid 0.1% ─────────────────────────

Table 2 ────────────────────────────────── Examples Contact angle (゜) Oil adhesion test Fire resistance Test Peeling test (%) 1 (water repellent) 2 (oil repellent) ────────────────────────────────── 1 112 50 No residual oil No change 0 2 108 48 No residual oil No change 0 3 107 46 No residual oil No change 0 4 109 43 No residual oil No change 0 5 108 49 No residual oil No change 0 6 105 45 Residual oil None No change 0 7 106 44 No residual oil No change 0 8 110 48 No residual oil No change 0 Comparative example 1 48 0 With residual oil No change / ───────────────── ─────────────────

[0049]

As described above, according to the present invention, an oil-repellent and water-repellent coating agent is coated on the surface of an oil-splash-preventing plate of a gas range, whereby the oil-repellent and water-repellent coatings are excellent. It is possible to provide a gas range oil scattering prevention plate having oil repellency, water repellency, and antifouling functions, which is hard to adhere and easily removes attached oil.

Claims (8)

[Claims] An oil scattering prevention plate for a gas range, wherein an oil-repellent and water-repellent coating is applied to the surface of an aluminum sheet. 2. The oil scattering prevention plate of a gas range according to claim 1, wherein the oil-repellent and water-repellent coating agent is a coating agent containing a fluorine atom-containing polymer. 3. An oil-repellent or water-repellent coating agent comprising 20 to 80% by weight of a fluorine-containing monomer (a) having a carbon-carbon unsaturated double bond and a perfluoroalkyl group, and a carbon-carbon unsaturated double bond. Monomers (b) 80 to 2 having a crosslinkable functional group
0% by weight, a polymer (A) comprising 0 to 50% by weight of a monomer (c) having a carbon-carbon unsaturated double bond other than (a) and (b), and a carbon-carbon unsaturated double bond 20 to 100% by weight of a monomer having a crosslinkable functional group (b) and 0 to 80% by weight of a monomer having a carbon-carbon unsaturated double bond other than (a) and (b) (c) The oil scattering prevention plate for a gas range according to claim 2, wherein the coating agent comprises a polymer (B) and a coating agent. 4. The oil splash prevention plate of a gas range according to claim 3, wherein the crosslinkable functional group of the monomer (b) is a hydrolyzable silyl group. 5. The crosslinkable functional group of the monomer (b) having a carbon-carbon unsaturated double bond and a crosslinkable functional group is a carboxyl group, an isocyano group, an epoxy group, an N-methylol group, an N-methyl The oil splash prevention plate for a gas range according to claim 3 or 4, wherein the plate is at least one functional group selected from an alkoxymethyl group and a hydroxyl group. 6. The gas range according to claim 3, wherein the amount of the fluorine-containing monomer (a) is 0.1 to 10% by weight based on the total of the polymer (A) and the polymer (B). Oil splash prevention plate. 7. The gas according to claim 3, wherein the crosslinker contains at least one compound having a reactive functional group capable of reacting with the crosslinkable functional group of the polymer (A) and the polymer (B). Oil splash prevention plate for range. 8. The oil splash prevention plate for a gas range according to claim 7, further comprising a crosslinking catalyst.