JP2782505B2 - Indoor interior wall material with excellent contamination resistance and projection properties - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interior wall material having a function of a lighting board excellent in stain resistance and projection properties suitable for walls of classrooms, conference rooms, offices and partition walls. .

[0002]

2. Description of the Related Art Conventional classrooms, meeting rooms, and offices are designed mainly for the balance of the interior of the entire building, and fixed classrooms such as blackboards and white boards are installed in classrooms. A blackboard, a white board or a mobile type is generally used. Also, in the case of projection, except for the dedicated room,
It is common to bring in a projection screen.

[0003]

That is, a blackboard, a white board, a projection screen, or the like is not installed in a classroom, a conference room, or an office, and a classroom, a conference, or the like is not used without a movable blackboard, a white board, a projection screen, or the like. The purpose is to use the walls of rooms and offices as they are as white boards and projection screens.

[0004]

That is, the present invention relates to tetrahydrophthalic acid, trimethylolpropane or pentaerythritol containing two or more (meth) acryloyl groups in one molecule and having a (meth) acryloyl group equivalent of 500 or less. An oligo (meth) acrylate obtained by esterifying three components of (meth) acrylic acid as a first component, which contains two or more methacryloyl groups in one molecule and has a methacryloyl group equivalent of 121 or less. One kind of polyhydric alcohol methacrylate selected from glycol dimethacrylate, diethylene glycol dimethacrylate and trimethylolpropane trimethacrylate is used as the second component, and the mixing ratio of the first component and the second component is the first component / the second component. = 1 / 0.5-1 / 2 (weight ratio) and this Is applied to the object to be coated with aluminum powder having a radius of 1 to 50 μm and / or 1 to 20 parts by weight of stainless steel powder as a third component to a total weight of 100 parts by weight, and the oxygen concentration is 1% or less. In the atmosphere of the coating layer formed by curing with an electron beam,
The coating layer is a metal plate, a hard board, a particle board, a wood board such as wood, an asbestos board, a rock wool board,
This is an interior wall material having the function of a writing board with excellent contamination resistance and excellent projection properties, formed on either an inorganic plate such as a gypsum plate or a plastic plate.

Another object of the present invention is to provide a polyester (meth) acrylate having at least two (meth) acryloyl groups in the molecule and having a (meth) acryloyl group equivalent of 500 or less;
Polyhydric alcohol (meth) acrylate containing two or more (meth) acryloyl groups in one molecule and having a methacryloyl group equivalent of 150 or less, oil absorption of 150 g / 100 g
The above-mentioned silica extender, a polymer having a molecular weight of 500 or less, an aluminum powder having a radius of 1 to 50 μm, and / or a paint containing a stainless steel powder as an essential component are applied to an object to be coated, and this is inertized with an oxygen concentration of 1% or less. In a coating layer formed by curing with an electron beam in a gas, the coating layer is formed of an inorganic plate such as a metal plate, a hard board, a particle board, a wood plate such as wood, an asbestos plate, a rock wool plate, and a plaster plate. This is an interior wall material having the function of a lighting board which is formed on any one of plastic plates and has excellent stain resistance and excellent projection properties. In the present invention, the interior wall material refers to a wall material used for a room wall and a partition wall.

[0006]

The two paint films used in the present invention exhibit excellent projection properties, and can be easily erased with an eraser even if a character or figure is written with a marker for whiteboard.

[0007] Other stain resistance can be measured by a conventional test method after applying a magic ink, curry, mustard, lipstick, crayon, colored pencil, ink, whiskey, other daily necessities, or a substance often used in a stain resistance test. After leaving for a while, the traces can be erased with a chemical such as benzine, alcohol, water and other contaminants or a cloth or gauze.

[0008] The surface hardness of the coating film, which is a measure of scratch resistance, is 9H or more in pencil hardness.

As described above, the interior wall material of the present invention has excellent projection properties and stain resistance, and has high hardness. The interior wall material may be stretched over the entire wall, or may be stretched only at an appropriate position as a screen at the time of projection, and another interior board may be stretched at other portions.

When such an interior wall material is used, the wall is left as it is, without a screen or a white plate, and it can be used as it is in a conference room, a classroom, an office or the like, and education and meetings can be conducted in a free style, and efficiency can be improved. Further, the interior wall material is excellent in stain resistance and hardness, so that it is suitable for kitchens, bath rooms, and restrooms.

[0011]

【Example】

Example 1 A. Tetrahydrophthalic acid, trimethylolpropane,
Oligomers having a condensation molar ratio of acrylic acid of about 1: 2: 4 (acryloyl group equivalent: about 155) C. Trimethylolpropane trimethacrylate (acryloyl group equivalent: about 110) The copolymerization molar ratio of ethyl acrylate, methacrylmethyl, hydroxyethyl methacrylate and acrylic acid is 7
A. Acrylic copolymer consisting of 0: 24: 3: 3 (number average molecular weight: about 20,000) B. Silica extender pigment ("Syloid 308" manufactured by Fuji Devison Chemical Co., Ltd., oil absorption 170/100 g) Titanium white

The weight ratio of A, B, C, D, E, and iron yellow (yellow iron oxide) is 17: 17: 4.0: 4.0: 4.
To a system consisting of 0.2: 2.7, 10% (on the former) of a mixed solvent of anone / butyl acetate / xylene = 2/2/1 was added to prepare a coating. This paint system is applied to a galvanized steel sheet (sheet thickness 0.5 mm) and a stainless steel sheet (sheet thickness 0.8 mm) using a curtain flow coater (Robel & Burclay Co., West Germany) to a dry coating thickness of 30 μm. Painted.

The coated plate is heated at a temperature of 72 ° C. with hot air of 100 ° C.
The solvent was scattered at a temperature of about 50 ° C. (in a furnace for about 50 seconds) and then cured with an electron beam to obtain a member for an interior wall. The curing conditions are a voltage of 300 kV and a current of 160 mA / c.
m, the dose was 3 Mrad, and the oxygen concentration at the time of irradiation was 150 ppm.

(1) Projection properties When projected color light was applied, colors were reproduced vividly and the projection properties were excellent. (2) Stain resistance Even when characters or figures were written on this coated plate with a marker for whiteboard manufactured by Pilot Corporation, it could be easily erased. In addition, other stain resistance tests such as magic ink (red, black), lipstick,
After applying nail polish and leaving it for one day, it was wiped off with ethanol, leaving no trace at all. (3) Others Hardness 9H, gloss 65, sharpness PGD meter 0.1, luminous reflectance 80 or more

Example 2 Except for iron yellow from Example 1, using a paint system to which 3% (vs. the former) of metal powder (manufactured by Toyo Aluminum, MG1000, central particle size: 27 μm) was added, under exactly the same conditions as before. A partition member was created. The performance after curing was almost the same as that of Example 1.

Example 3 A partitioning member was prepared from Example 2 using the same paint system except for the C and D components under the same conditions as before. (The coating method was a roll coater.) The performance after curing was almost the same as that of Example 2.

[0017]

By using the interior wall material of the present invention, it can be used as a projection screen and a white board, and can be immediately used as a classroom or a conference room. Further, if a large room is partitioned by a partition using interior wall materials, it can be used immediately in a conference room or the like without a projection screen and a white board, and is efficient. In addition, it can be easily used as a wall material in kitchens and bathrooms because dirt is easily removed.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI B05D 7/24 303 B05D 7/24 303B B43L 1/10 B43L 1/10 E04B 2/74 541 E04B 2/74 541N

Claims (2)

(57) [Claims] (1) a (meth) acryloyl group in one molecule;
And the (meth) acryloyl group equivalent is 500
The first component is an oligo (meth) acrylate obtained by esterifying the following three components of tetrahydrophthalic acid, trimethylolpropane or pentaerythritol, and (meth) acrylic acid, and two or more methacryloyl groups in one molecule. Containing, and an ethylene glycol dimethacrylate having a methacryloyl group equivalent of 121 or less,
One kind of polyhydric alcohol methacrylate selected from diethylene glycol dimethacrylate and trimethylolpropane trimethacrylate is used as the second component,
The mixing ratio of the component and the second component is as follows: first component / second component = 1 /
0.5 to 1/2 (weight ratio) and their total weight 10
A coating material in which 0 to 100 parts by weight of aluminum powder having a radius of 1 to 50 μm and / or 1 to 20 parts by weight of stainless steel powder as a third component is applied to an object to be coated is applied to an atmosphere having an oxygen concentration of 1% or less. In the coating layer formed by curing with an electron beam, the coating layer is a metal plate, a hard board,
Particle board, wood board such as wood, asbestos board,
An interior wall material that has the function of a writing board with excellent contamination resistance and excellent projection properties, formed on any of inorganic plates such as rock wool plates and gypsum plates, and plastic plates. 2. A polyester (meth) acrylate having two or more (meth) acryloyl groups in the molecule and having a (meth) acryloyl group equivalent of 500 or less, and containing two or more (meth) acryloyl groups in one molecule. And a polyhydric alcohol (meth) having a methacryloyl group equivalent of 150 or less
Acrylate, silica-based extender having an oil absorption of 150 g / 100 g or more, polymer having a molecular weight of 500 or more, and a radius of 1
A coating layer formed by applying a coating containing aluminum powder and / or stainless steel powder as an essential component to an object to be coated, and curing the coating with an electron beam in an inert gas having an oxygen concentration of 1% or less. The coating layer is formed on any one of a metal plate, a hard board, a particle board, a wood plate such as wood, an asbestos plate, a rock wool plate, an inorganic plate such as a gypsum plate, and a plastic plate. Interior wall material with excellent lighting board function.