JPS59204668A - Temporary coating composition for lubrication treatment of steel plate and curable with energy radiation - Google Patents

Abstract

PURPOSE:To provide the titled composition giving excellent processability and rust-preventive property, by adding specific amounts of a lubricant and a sensitizer to the reaction product of an oxirane ring-containing compound and a carboxyl group-containing alpha,beta-ethylenic unsaturated carboxylic acid, etc. at a specific ratio, or a mixture containing said reaction product. CONSTITUTION:The objective composition can be prepared by mixing (A) (i) 100pts.wt. of a product obtained by (1) reacting 1mol of a compound containing one oxirane ring (e.g. phenyl glycidyl ether) with 0.8-1.1mol of an alpha,beta-ethylenic unsaturated carboxylic acid having one carboxyl group (e.g. acrylic acid) and (2) reacting the product with 0.5-1mol of a polybasic and/or its anhydride, or (ii) 100pts.wt. of the mixture of 100pts.wt. of the component (i) and <=100pts.wt. of an acrylic acid ester and/or methacrylic acid ester, (B) 1-30pts.wt. of a lubricant, and if necessary, (C) 0.5-10pts.wt. of a sensitizer. EFFECT:The coating film can be removed with weak alkaline liquid.

Description

[Detailed description of the invention]

The present invention exhibits excellent workability when pressing steel sheets (for example, hot-rolled pickled sheets, cold-rolled steel sheets, and galvanized steel sheets), has excellent rust prevention properties before and after pressing, and is further desorbed with a weak alkaline solution. The present invention relates to an energy beam-curable temporary coating composition for lubricating steel sheets that can be coated. Generally, steel sheets used for automobiles, light electrical products, and other metal processed products are treated with mineral oil-based rust inhibitors to prevent rust after being manufactured at a steel manufacturer and before being processed and painted at a processing company. is applied and shipped. Further, when press working a steel plate, press oil is generally applied in order to improve workability. However, since these anti-rust oils and press oils are non-drying, they make the steel surface sticky and are inconvenient to handle, and when pressing, the press oil scatters around the workplace, causing problems such as worsening the working environment. have. In addition, when pressing conditions are severe such as press working or deep drawing of high-strength steel plates, that is, when the surface pressure of the die is high, linear scratches or seizures (hereinafter referred to as die shavings) may occur due to direct contact between the steel plate and the processing tool. ) is unavoidable.1. This may lead to press cracking. In order to solve these problems, studies on lubricated steel plates with solid coatings are underway, and some of them have been implemented. The materials used for the solid coating include solid waxes such as paraffin wax, naphthene wax, higher carboxylic acid wax, higher alcohol wax, and higher amine wax, and organic synthetic waxes such as polyacrylic acid. Examples include resin. Furthermore, lubricants such as higher fatty acid salts, graphite, and molybdenum disulfide are mixed with these as necessary. However, these also have many problems when applied and dried by steel manufacturers. In other words, when painting steel materials, these materials are used after being dispersed or dissolved in a solvent, but if the solvent is an organic solvent, the work environment deteriorates due to its volatilization, the installation of solvent treatment equipment, and the risk of fire. Water is often used as a solvent because of problems such as the danger of However, even if water is used,
As described in No. 0175, when processing is carried out in a continuous processing facility of a steel manufacturer or the like, the steel plate is preheated or hot air is blown after coating to speed up the evaporation of water. Even if these methods are used, for example, 50%
℃ and then blowing hot air at 80℃ after coating, the drying time is 10 to 15 minutes for a coating amount of 4P/i.
It takes seconds. Recent continuous processing equipment for steel plates requires at least 1
It has a processing speed of 00.71L/min, and if
If painting is carried out using continuous processing equipment with a processing speed of 1 minute, it will take 1 minute to ensure a drying time of 10 to 15 seconds.
It requires a line length of 7-25?7L. It is difficult in terms of equipment to process a steel plate over this length without coming into contact with feed rolls, pinch rolls, etc. Regarding this point, we focused on the fact that radically polymerizable compositions harden in a very short time by irradiating them with ionizing radiation or electromagnetic waves, especially ultraviolet rays.
The use of energy rays such as ultraviolet rays is known, including the above-mentioned Japanese Patent Laid-Open No. 51-70175. The present inventors have developed a technology that hardens with double energy ray irradiation, provides lubricity greater than the pressure required for solid lubricated steel sheets, has rust prevention properties, and can be cured with weak alkaline liquid. The contradictory phenomenon of membrane removal was overcome by using a compound with a specific structure within a specific range, and the present invention was completed. That is, in the present invention, CI) 1 mol of a compound having one oxirane ring is reacted with 0.8 to 1.1 mol of an α,β-ethylenically unsaturated carboxylic acid having one carboxyl group, and then a polybasic acid and A mixture containing 100 parts by weight of a product (a) obtained by reacting 0.5 to 1 mol of the anhydride thereof and optionally up to 100 parts by weight of an acrylic ester and/or a methacrylic ester (b) , characterized in that 1 to 30 parts by weight of (n) a lubricant and, if necessary, 0.5 to 10 parts by weight of a sensitizer (III) are blended with 100 parts by weight of the mixture CI). The present invention relates to an energy beam-curable temporary coating composition for lubricating steel plates. Examples of the compound having one oxirane ring (hereinafter referred to as compound A7) for obtaining the product (a) used in the present invention include monoglycidyl ether, monoglycidyl ester, and alicyclic monoepoxide. The above monoglycidyl ethers include butyl glycidyl ether, 2-ethylhexyl glycidyl ether,
2-methyloctylglycidyl ether, laurylglycidyl ether, phenylglycidyl ether, cresylglycidyl ether, nonylphenylglycidyl ether, phenyl (2-methylglycidyl) ether, 2
, 4-dibromophenyl glycidyl ether, 2,4.
Examples include 6-tribromophenyl glycidyl ether. The monoglycidyl esters mentioned above include n-hexanoic acid glycidyl ester, 2-ethylhexanoic acid glycidyl ester, isononanoic acid glycidyl ester, benzoic acid glycidyl ester, phenylacetic acid glycidyl ester, Cardura E (manufactured by Shell Chemical Co., Ltd., glycidyl persatate). Examples include ester, epoxy (240 to 25 o), and the like. Examples of the alicyclic monoepoxides include cyclohexene oxide, cyclopentene oxide, bicyclohebutene oxide, dipentene monoxide, 2-pinene oxide, octylene oxide, and styrene oxide. These compounds A can be used alone or in combination of two or more. In the composition of the present invention, when rust prevention and curability are particularly important, it is desirable to use an aromatic monoglycidyl ether such as phenylglycidyl ether as the compound A. Further, the α,β-ethylenically unsaturated carboxylic acid having one carboxyl group (hereinafter referred to as compound B) for obtaining the product (a) includes acrylic acid, methacrylic acid, crotonic acid, cinnamic acid, Examples include itaconic acid monoalkyl esters (e.g. methyl ester, ethyl ester, n-propyl ester, isopropyl ester),
These may be used alone or in combination of two or more. From the point of view of the curability of the composition of the present invention, the use of acrylic acid was preferred.As the polybasic acid and its anhydride (hereinafter referred to as compound C) for obtaining the product (a), phthalic acid,
Inphthalic acid, tetrahydrophthalic acid, methyltetrahydrophthalic acid, hexahydrophthalic acid, methylhexahydrophthalic acid, hymic acid, methylhymic acid, trimellitic acid, pyromellitic acid, succinic acid, adipic acid, phthalic anhydride, Tetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, hexahydrophthalic anhydride,
Methylhexahydrophthalic anhydride, himic anhydride,
Examples include methyl hymic anhydride, trimellitic anhydride, pyromellitic anhydride, succinic anhydride, etc.
One species or a mixture of two or more species may be used. In terms of curability and rust prevention properties of the composition of the present invention, phthalic acid, tetrahydrophthalic acid, methyltetrahydrophthalic acid (hexahydrophthalic acid, methylhexahydrophthalic acid, hymic acid, methylhimic acid, trimellitic acid, It is preferable to use cyclic polybasic acids such as acids, pyromellitic acid, and their anhydrides.The product (a) used in the present invention is obtained by first reacting compound A and compound 11, and adding compound C to the reaction product. It can be obtained by reacting.The reaction between compound A and compound B can be carried out without a catalyst.E
+J ability, but in order to avoid thermal polymerization of the α,β-ethylenically unsaturated group, it is desirable to carry out the reaction at the lowest possible temperature and in the shortest possible time, and for this purpose it is convenient to use a catalyst. This catalyst includes N,N-dimethylaniline,
Triethylamine, benzyldimethylamine, N, N-
Tertiary amines such as dimethylaminoethyl methacrylate and ammonium salts such as trimethylbenzylammonium chloride give good results. Also, during the reaction, α. In order to prevent the thermal polymerization of β-ethylenically unsaturated groups, the usual thermal polymerization inhibitors (for example)\hydroquinone,

[-phenols such as butylhydroquinone, hydroquinone monomethyl ether, catechol, and L-butylcatechol, and quinones such as benzoquinone and diphenylbenzoquinone) from 0.01 to 0.0% relative to the total amount of compound A and compound B.
It is desirable to use it in a range of 5% by weight. The reaction may be carried out at a temperature of 100-130°C for 1-15 hours. If it is difficult to carry out the reaction without a solvent, the reaction may be carried out using an agent having no carboxyl group or hydroxyl group (for example, toluene, xylene, butyl acetate) as a solvent. The reaction product thus obtained is not isolated, but the desired product (a) is obtained by adding compound C and reacting at a temperature of 100 to 130°C. When an acid anhydride of a polybasic acid is used as compound C, if the reaction is delayed or the reaction system has a problem with thermal stability, add the above catalyst or thermal polymerization inhibitor to start the reaction. Just move on. Furthermore, when the reaction system has a high viscosity and is difficult to stir, the above-mentioned solvents may be used. When using a polybasic acid as compound C, a conventional esterification method may be employed. That is, the reaction may proceed using an acid catalyst such as para-toluenesulfone 98, while removing water produced as the reaction proceeds from the system by azeotropy with the solvent. When the product (a) thus obtained is synthesized using a solvent, the solvent is distilled off under reduced pressure. If necessary, the solvent may be distilled off under reduced pressure after adding the acrylic ester and/or methacrylic ester (b) which is a component of the composition of the present invention. Since Compound A does not have a polymerizable double bond, it is not cured by active energy rays. Therefore, it is necessary to react with compound B as efficiently as possible. Further, since compound [3] is highly acidic, it is desirable to leave it as little as possible from the viewpoint of rust prevention. Considering these facts, the molar ratio of Compound A and Compound B used is 1:0.8 to 1.1, preferably 1:0.9 to 1.
A range of 0 is desirable. Compound C is preferably used in an amount of 0.5 to 1.0 mol per 1 mol of compound A. If it is less than 0.5 mol, the amount of carboxyl groups introduced into the curable component will be small (and the film removability will be reduced; on the other hand, 1.0 mol)
If the amount exceeds the molar amount, an excessive amount of compound C remains, reducing the rust prevention property. The acrylic ester and methacrylic ester (b) used in the present invention may be those conventionally used in the relevant field, such as methyl (meth)acrylate (both methyl acrylate and methyl methacrylate are shown hereinafter). ), ethyl (meth)acrylate, n-butyl (meth)acrylate, inbutyl (meth)acrylate, hexyl (meth)acrylate, 2-
Ethylhexyl (meth)acrylate, cyclohexyl (meth)acrylate, benzyl (meth)acrylate, 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 2-methoxyethyl (meth)acrylate, cellosolve (meth)acrylate , 2-butoxyethyl (meth)acrylate,
Examples include carbon tol (meth)acrylate, dipropylene glycol monomethyl ether monoacrylate, triethylene glycol monomethyl ether monoacrylate, and tetrahydrofurfuryl (meth)acrylate. These may be used alone or in combination of two or more. The compound (b) is used as necessary for the purpose of adjusting the viscosity when coating the composition of the present invention, and 100 parts (parts by weight, same hereinafter) of the above product (a).
It is desirable to mix in an amount of up to 100 parts. Mixing in an excessive amount will result in a decrease in the curability of the composition of the present invention. In the present invention, the above-mentioned compound (b) further includes ethylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, tripropylene glycol di(meth)acrylate, propylene glycol di(meth)acrylate, dipropylene glycol Ji(
meth)acryle-1-11,6-hexanethiol di(
Polyfunctional (meth)acrylates such as meth)acrylate and trimethylolpropane triacrylate can also be used, but although these polyfunctional (meth)acrylates accelerate the curing of the composition of the present invention, they reduce the adhesion to steel materials. At the same time, it reduces the film removability with weak alkaline solutions.
It is necessary to pay attention to the amount used. When used, the amount is preferably up to 20 parts per 100 parts of product (a). The lubricant (n) used in the present invention includes organic and inorganic lubricants. The former organic lubricants include fatty acids (e.g. oleic acid, linoleic acid, palmitic acid, stearic acid, etc.), metal soaps (e.g. lauric acid, stearic acid, ricinoleic acid, rosin, naphthenic acid, etc.) and aluminum. , barium, calcium, iron, magnesium, lead, tin, zinc, etc.), fatty acid soaps (e.g., those obtained by reacting the above fatty acids with sodium, potassium, ammonia), paraffin soaps Hydrocarbons (e.g. paraffin wax, beeswax, vegetable wax, chlorinated paraffin, etc.), higher alcohols (e.g. lauryl alcohol, stearyl alcohol,
palmityl alcohol, etc.), fatty acid amides (e.g. those obtained from the above fatty acids and amines), fluororesin powder,
Examples include polyethylene wax, polyethylene powder, polypropylene powder and derivatives thereof. The latter inorganic lubricants include graphite, molybdenum disulfide,
Examples include boron nitride. These can be used alone or in combination of two or more. In the present invention, in order to impart good press workability without inhibiting the curability and adhesion of the target composition,
It is preferable to use the above-mentioned fluororesin powder, especially tetrafluoroethylene resin powder. Commercially available tetrafluoroethylene resins include “Hostaflon TF9202J” and “Hostaflon T
Examples include F9205J (manufactured by Hoechst Japan), LeBron L-2J, and L-5J (manufactured by Daikin Industries, Ltd.). The above-mentioned lubricant (n) is a mixture of acrylic ester and/or methacrylic ester (b) mixed as necessary with the above-mentioned product (a) in a range of 1 to 30 parts per 100 parts CI). Blend. If the amount is less than the specified amount, the lubricating effect of the composition of the present invention will be poor, while if it is in excess, the strength of the cured coating will decrease, causing problems such as coating pieces adhering to the die during press processing. will occur. The sensitizer (N) used in the present invention may be blended when the composition of the present invention is cured by ultraviolet rays, as is conventionally known, and does not necessarily need to be blended in the case of electron beam curing. Specific examples thereof may also be known in the art. For example, benzoin, benzoin methyl ether, benzoin ethyl ether/lz, benzoin propyl ether, benzoin n-butyl ether, benzoin butyl ether, benzophenone, 2-chlorothioxanthone, 2-methylthioxanthone, 2-isopropylthioxanthone, 4,4'-dimethyl Benzoin, penzyl dimethyl ketano lz, 1,1.1-1-lichloroacetophenone, 2-hydroxy-2-methyl-1-
Phenylpropan-1-one, 1-(4-isopropylphenyl)-2-hydroxy-2-methylpropane-1
-on, etc. These can be used alone or in combination of two or more. This sensitizer CM) is blended in an amount of 0.5 to 10 parts with respect to 100 parts of the mixture (I). If the amount is less than the specified amount, the curing of the composition of the present invention will be slow during UV curing, while if it is in excess, the curability will not improve, which is economically disadvantageous. In addition to the above-mentioned components (I) to (III), the composition of the present invention may optionally contain a defoaming agent, anti-sagging agent, surface conditioner, rust preventive agent, plasticizer, colorant, solvent, etc. The materials used in the composition may be blended within a range that does not adversely affect rust prevention or film removability. The composition of the present invention can be obtained by mixing the above components using a conventional dispersing machine (for example, a ball mill, three-roll mill, sand mill, high-speed mixer, etc.). Next, conventionally known techniques may be employed to coat steel materials with the composition of the present invention. That is, the coating can be carried out by a conventional method such as a roll coater, spray, curtain flow coater, etc., but a high viscosity material such as the composition of the present invention may be
In order to apply with a low coating amount such as g/rf, it is desirable to employ a hot roll coater. The composition applied to the steel material may then be cured using ultraviolet rays or electron beams according to a conventional method. As a UV source, wavelength 200-45
A normal high-pressure mercury lamp, ultra-high-pressure mercury lamp, metal halide lamp, etc. that generate ultraviolet light of 0 mμ can be used. In the electron beam irradiation treatment, an electron beam accelerator that generates an electron beam having an energy of 1QKeV to 3MeV can be used. The lubricated steel sheet obtained in this way is coated with a solid film that is excellent in rust prevention, press workability, and removability with a weak alkaline solution. Next, the present invention will be specifically explained with reference to Reference Examples, Examples, and Comparative Examples. In addition, in these examples, parts mean parts by weight. Reference example 1 Phenyl glycidyl ether 150 in a flask with a stirrer
(1 mol) and 1.1 parts of N,N-dimethylaminoethyl methacrylate were added, and the temperature was raised to 110'C. Thereafter, while maintaining the same temperature and stirring, a mixture of 72 parts (1 mol) of acrylic acid and 0.2 parts of hydroquinone methyl ether was added dropwise over about 1 hour. Then at the same temperature 5
The reaction was allowed to take place with stirring for a period of time. After the reaction product was once cooled to room temperature, 41.6 L of toluene, 0.8 parts of N,N-dimethylaminoethyl methacrylate, and 0.8 parts of hydroquinone monomethyl ether were added.
2 parts and 152 parts (1 mol) of tetrahydrophthalic anhydride were added, and the mixture was reacted with stirring at 115°C for 3 hours to obtain a solution of reaction product (a). The acid value of this reaction product solution was 144. The general formula of the reaction product (a) is as follows. Thereafter, the reaction product solution was allowed to cool to 50° C., and then 93.5 parts of 2-hydroxypropyl acrylate, which is an acrylic ester (b), was added, and stirring was continued to form a uniform solution. Next, toluene was distilled off from this solution under reduced pressure to obtain 80 parts of reaction product (a) and acrylic ester (
b) A solution consisting of 20 parts was obtained. Reference example 2 Phenyl glycidyl ether 150 in a flask with a stirrer
(1 mole) and 1.1 parts of N,N-dimethylaminoethyl methacrylate were added, and the temperature was raised to 110°C. Thereafter, while maintaining the same temperature and stirring, a mixture of 72 parts (1 mole) of acrylic acid and 0.2 part of hydroquinone monomethyl ether was added dropwise over about 1 hour. Thereafter, the mixture was reacted at the same temperature for 5 hours with stirring. After the reaction product was once cooled to room temperature, 38.2 parts of toluene, 0.6 parts of N,N-dimethylaminoethyl methacrylate, and 0 part of hydroquinone monomethyl ether were added.
．． 1 part and 121.6 parts of tetrahydrophthalic anhydride (
0.8 mol) was added thereto and reacted at 115° C. for 3 hours with stirring to obtain a solution of reaction product (a). The acid value of this reaction product solution was 115. The general formula of the reaction product (a) is as follows. Thereafter, the reaction product solution was allowed to cool to 50° C., and then 86 parts of 2-hydroxypropyl acrylate (acrylic acid ester sum) was added thereto, and stirring was continued to form a uniform solution. Next, toluene was distilled off from this solution under reduced pressure.
80 parts of reaction product (a) and 2 parts of acrylic acid ester (b)
A solution consisting of 0 parts was obtained. Reference example 3 tN Phenyl glycidyl ether 1 in a flask with a stirrer
50 parts (1 mole) and 1.1 parts of N,N-dimethylaminoethyl methacrylate were added, and the temperature was raised to 110°C. Thereafter, while maintaining the same temperature and stirring, acrylic acid 72 parts (1
A mixture of 0.2 parts of hydroquinone monomethyl ether (mol) and 0.2 parts of hydroquinone monomethyl ether was added dropwise over about 1 hour. Thereafter, the mixture was reacted at the same temperature for 5 hours with stirring. After the reaction product was allowed to cool to room temperature, 41% of toluene was added to it. Add 0.7 parts of IJNN-dimethylaminoethyl methacrylate, 0.1 part of hydroquinone monomethyl ether, and 148 parts (1 mol) of phthalic anhydride, and react with stirring at 115°C for 3 hours to form a solution of reaction product (a). I got it. The acid value of this reaction product solution was 150. The general formula of the reaction product (a) is as follows. Thereafter, the reaction product solution was allowed to cool to 50'C, and then 92.5 parts of tetrahydrofurfuryl acrylate, which is an acrylic ester (b), was added, and stirring was continued to form a uniform solution. Next, toluene was distilled off from this solution under reduced pressure to obtain a solution consisting of 80 parts of the reaction product (a) and 20 parts of the acrylic ester (b). Reference example 4 Phenyl glycidyl ether 150 in a flask with a stirrer
(1 mol) and 1.1 parts of N,N-dimethylaminoethyl methacrylate) were added, and the temperature was raised to 110°C. Thereafter, while maintaining the same temperature and stirring, a mixture of 72 parts (1 mole) of acrylic acid and 0.2 part of hydroquinone monomethyl ether was added dropwise over about 1 hour. Thereafter, the mixture was reacted at the same temperature for 5 hours with stirring. After once cooling the reaction product to room temperature, 35.8 parts of toluene, 05 parts of N,N-dimethylaminoethyl methacrylate, and 0.1 part of hydroquinone monomethyl ether were added.
and 100 parts (1 mol) of succinic anhydride were added thereto, and the mixture was reacted with stirring at 120° C. for 3 hours to obtain a solution of reaction product (a). The acid value of this reaction product solution was 170. The general formula of the reaction product (a) is as follows. 0 0 Thereafter, the reaction product solution was allowed to cool to 50° C., and then 80.5 parts of tetrahydrofurfuryl acrylate, which is an acrylic ester (b), was added, and stirring was continued to form a uniform solution. Next, toluene was distilled off from this solution under reduced pressure to obtain 80 parts of reaction product (a) and acrylic ester (
A solution consisting of 0.0120 parts was obtained. Reference Example 5 186 parts (1 mol) of 2-ethylhexyl glycidyl ether and 1.3 parts of N,N-dimethylaminoethyl methacrylate were placed in a flask equipped with a stirrer, and the temperature was raised to 110°C. Then, while maintaining the same temperature and stirring, acrylic acid 72
(1 mol) and 0.0 parts (1 mol) of hydroquinone monomethyl ether.
Three parts of the mixture were added dropwise over about 1 hour. Thereafter, the mixture was reacted at the same temperature for 5 hours with stirring. After the reaction product was once cooled to room temperature, 45.6 parts of toluene, 0.8 parts of N,N-dimethylamine ethyl methacrylate, and 0.0 parts of hydroquinone monomethyl ether were added.
2 parts and 152 g (1 mol) of tetrahydrophthalic anhydride were added, and the mixture was reacted with stirring at 115° C. for 6 hours to obtain a solution of reaction product (a). The acid value of this reaction product solution was 136. The general formula of the reaction product (a) is as follows. CI-! 3. After that, the reaction product solution was allowed to cool to 50'C, and 102.5 parts of tetrahydrofurfuryl acrylate, which is an acrylic acid ester, was added thereto, and stirring was continued to form a homogeneous solution. Next, toluene was distilled off from this solution under reduced pressure to obtain a solution consisting of 80 parts of the reaction product (a) and 20 parts of the acrylic ester (b). Reference example 6 Phenyl glycidyl ether-50 in a flask with a stirrer
(1 mol) and 1.1 parts of N,N-dimethylaminoethyl methacrylate were added, and the temperature was raised to 110'C. Thereafter, a mixture of 72 parts (1 mole) of acrylic acid and 1.2 parts of hydroquinone monomethyl ether was added dropwise over about 1 hour while stirring while maintaining the same temperature. Thereafter, stirring was continued at the same temperature for 5 hours to cause a reaction. Reference Example 7 24 parts of toluene and 10 parts of succinic anhydride in a flask with a stirrer.
0 parts (1 mol), 2-hydroxyethyl acrylate 1
16 parts (1 mole), 1.11 parts of N,N-dimethylaminoethyl methacrylate, and 0.2 parts of hydroquinone monomethyl ether were added, and the mixture was reacted at 100°C for 5 hours. Thereafter, the toluene was distilled off under reduced pressure to obtain a reaction product. Examples 1 to 7 Each component shown in Table 1 was mixed in the indicated amount and uniformly dispersed using a three-roll mill. In addition, the fluororesin powder in the table is manufactured by Daikin Industries, Ltd.
Lubron L-2” Calcium stearate: Manufactured by Sakai Chemical Industry Co., Ltd. [SC#10
0J Polypropylene powder: "Lanco Wax PP1362DJ" manufactured by Rainger, Italy.
．． A natural roll coater was used to coat an 8+++m cold-rolled steel plate to a film thickness of 2 to 4 μm. After that, light was applied under two ozone type concentrating ultraviolet irradiation lamps with 80W/cm input for 30 minutes.
The coated steel plate was passed through at a speed of 1 minute to obtain a lubricated steel plate. A sample piece was cut out from this steel plate and its performance was investigated. The results are shown in Table 2. The details of the test method adopted are as follows. (1) Press workability: 50φ cylindrical deep drawing test, B, H, F, -0.5 tons, presence or absence of drawing through at each drawing ratio (0: drawing through, X: breakage)
and maximum punch load measurement. (2) Film removability: “Fine Cleaner 434” manufactured by Nihon Pariki Rising Co., Ltd.
9 Using J2oF/no, spray L/-pressure i at 60℃
The film removal rate was measured for one hour of each spray under the conditions of , oKp/ci. (3) Rust prevention: Measurement of the rusted area in each cycle in a wet drying cycle test (1 cycle: 60'C. 98% RH, 2 hours + 2 hours of drying at 60'C). Comparative Examples 1-2 In the same manner as in Example 1, each component shown in Table 3 was mixed in the indicated amounts to obtain a composition. The composition was coated on a steel plate in the same manner as in Example 1 and subjected to performance investigation. The results are shown in Table 2. Table 3 Comparative Example 3 Commercially available press oil (“Press oil #620J” manufactured by Nippon Kosakubu Co., Ltd.
) was subjected to a performance investigation in the same manner as in Example 1. The results are shown in Table 2. Continued from page 1 0 Inventor: Nippon Paint Co., Ltd., 19-17 Ikedanaka-cho, Neyagawa City, Arai Metropolitan Government Building Applicant: Nippon Steel Corporation, 2-6-3 Otemachi, Chiyoda-ku, Tokyo

Claims (1)

[Claims] 1. (i) 1 mole of a compound having one oxirane ring is reacted with 0.8 to 1.1 moles of an α,β-ethylenically unsaturated carboxylic acid having one carboxyl group, and then 100 parts by weight of a product obtained by reacting 0.5 to 1 mol of a basic acid and/or its anhydride (a) and, if necessary, up to 100 parts by weight of an acrylic ester and/or a methacrylic ester (b) A mixture containing C
1 to 30 parts by weight of lubricant (II) per 100 parts by weight of I)
Parts by weight and optionally (II units) sensitizer 0.5-I
An energy beam-curable temporary coating composition for steel plate lubrication treatment, characterized in that it contains O in parts by weight. 2. The composition of item 1 above, wherein the lubricant (II) is a fluororesin powder.