JPH08252531A - Interior wall material excellent in stain resistance - Google Patents

Abstract

PURPOSE: To use a wall as it is as a color board by specifying a coating material component, a component ratio and curing condition in a wall material obtained by using a wating material consisting of an oligo(meth)acrylate and a polyhydric alcohol methacrylate and curing them with electron beams. CONSTITUTION: The first component (I) is the oligo(meth)acrylate containing >=2 (meth)acryloyl groups in one molecule, having its group equivalent of <=500 and obtained by esterifying three components of tetrahydrophthalic acid, trimethylolpropane or pentaerythritol and (meth)acrylic acid. The second component (II) is one kind among ethylene glycol dimeth acrylate, diethylene glycol dimethacrylate, trimethylolpropane trimethacrylate and containing >=2 (meth) acryloyl groups in one molecule and having its group equivalent of <=121. The components are mixed in I/II ratio of (1/0.5) to (1/2) by wt. applied on a metallic plate, etc., and subjected to an electron radiation curing in an atmosphere having <=1% oxygen concn. Any material among ligneous board such as particle board, inorg. board such as gypsum board, plastic board and metallic board is desirable as the base material to be coated, and the coated matter is excellent in resistance to stains.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interior / interior wall material having a function of a writing board having excellent stain resistance, which is suitable for a wall of a classroom or a conference room and a partition wall.

[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. Fixed blackboards and white boards are installed in the classrooms, and meeting rooms and offices are fixed. It is common to use blackboards, whiteboards or mobile objects.

[0003]

DISCLOSURE OF THE INVENTION According to the present invention, the wall of a classroom, a meeting room or an office room is not installed in a classroom, a meeting room or an office room without using a blackboard or a white board, and without using a movable blackboard or a white board. The purpose is to use the partition wall as it is as a white board.

[0004]

Means for Solving the Problems That is, the present invention provides tetrahydrophthalic acid, trimethylolpropane or pentaerythritol having two or more (meth) acryloyl groups in one molecule and having a (meth) acryloyl group equivalent of 500 or less. , Ethylene having an oligo (meth) acrylate obtained by esterifying three components of (meth) acrylic acid as the first component and containing two or more methacryloyl groups in one molecule and having a methacryloyl group equivalent of 121 or less. The second component is one polyhydric alcohol methacrylate selected from glycol dimethacrylate, diethylene glycol dimethacrylate, and trimethylolpropane trimethacrylate, and the mixing ratio of the first component and the second component is the first component / second component. = 1 / 0.5 to 1/2 (weight ratio) In a coating layer formed by applying it to a cloth and curing it with an electron beam in an atmosphere having an oxygen concentration of 1% or less, the coating layer may be a metal plate, a hard board, a particle board, wood, or the like. It is an interior and interior wall material having the function of a writing board with excellent stain resistance, which is formed by either an inorganic board such as a wood board, asbestos board, rock wool board, gypsum board, or a plastic board.

Alternatively, according to the present invention, the object to be coated is 1
Polyester (meth) acrylate containing two or more (meth) acryloyl groups in the molecule and having a (meth) acryloyl group equivalent of 500 or less, and one or more (meth) acryloyl groups in one molecule, and methacryloyl A polyhydric alcohol (meth) acrylate having a base equivalent of 150 or less,
A silica-based extender pigment having an oil absorption of 150 g / 100 g or more,
In a coating layer formed by coating a coating material containing a polymer having a molecular weight of 5000 or more as an essential component on an object to be coated and curing the coating by an electron beam in an inert gas having an oxygen concentration of 1% or less, the coating layer Is a metal board, hard board, particle board, wood board such as wood, asbestos board, rock wool board, inorganic board such as gypsum board, or plastic board. It is a functional interior and interior wall material. In addition, the interior / interior wall material in the present invention refers to a wall material used for a room wall and a partition wall.

[0006]

The coating film of the present invention exhibits excellent stain resistance and can be easily erased with an eraser even if a character or drawing is written with a whiteboard marker. As for other stain resistance, after applying magic ink, curry, mustard, lipstick, crayon, colored pencils, ink, whiskey, other daily necessities or substances commonly used in the stain resistance test by the usual test method, leave them for 24 hours. Chemicals that dissolve benzine, alcohol, water, and other contaminants, or
The trace can be erased with a cloth or gauze. Further, the coating film surface hardness, which is a measure of scratch resistance, is 7H or more in pencil hardness.

As described above, the wall material for interior and interior of the present invention has a beautiful appearance with excellent lighting board function and stain resistant surface high hardness. This wall material for interior and interior may be stretched over the entire wall, or this wall material is stretched only at the hand's reach.
Others may be covered with other interior materials. Further, the interior wall material may be used only for the wainscot portion which is easily soiled. When such an interior wall material is used, the wall is a white plate as it is, and it can be used as it is in a meeting room, an office, a classroom, and it is efficient because it can be used for education and meetings in any style. The same applies when an interior wall material is used for the partition. Furthermore, it has high hardness, solvent resistance, and stain resistance, so it is suitable for kitchen, bath room, and restroom.

[0008]

【Example】

Example 1 Oligoacrylate (ester having an acryloyl group equivalent of 155) which is an esterification reaction product having a trimethylolpropane / tetrahydrophthalic acid / acrylic acid molar ratio of 2: 1: 4.
2 parts of titanium white to 100 parts of ethylene glycol dimethacrylate (methacryloyl group equivalent 99)
It was made into a paint by adding 00 parts. After 25 μ of the above coating material was applied as a dry coating film on the interior / interior wall member made of an electrogalvanized steel sheet having a thickness of 0.6 m / m, an electron beam of 300 Kev was applied to
Mrad irradiation was performed to obtain a wall material for interior and interior. In this case, the irradiation atmosphere is a nitrogen stream and the oxygen concentration is 1% or less.

It was possible to easily erase even when characters and drawings were written on this coated plate (wall material for interior and interior) with a marker for whiteboard manufactured by Pilot Co., Ltd. In addition, magic ink (red,
Black), lipstick, nail polish, etc. and leave it for 1 day,
Wiping off with ethanol left no trace.

No change was observed after 48 hours of immersion in toluene, methyl ethyl ketone or ethyl acetate ethanol. This coated steel sheet (wall material for interior and interior) is JIS-K-5.
When tested in accordance with 400, the gloss is 90,
The pencil hardness was 7H.

Example 2 A oligomer (condensation molar ratio of phthalic acid, trimethylolpropane and acrylic acid) to be about 1: 2: 4 (acryloyl group equivalent about 155), B trimethylolpropane trimethacrylate (acryloyl group equivalent about 110) ), C silica-based extender pigment ("Syloid 308" oil absorption amount 170 g / 100 g, manufactured by Fuji Devison Chemical Co., Ltd.), D: Copolymer molar ratio of ethyl acrylate, methyl methacrylate, hydroxyethyl methacrylate, acrylic acid is 7
0: 24: 3: 3 acrylic copolymer (number average molecular weight of about 20,000),

90% xylene (to the former) was added to a system in which the weight ratio of A, B, C, D and titanium white was 18.8: 18.8: 1.8: 4.4: 44.2. In addition, the paint. A curtain flow coater (effective width 60 cm) was applied to this paint system, and an electrogalvanized steel plate partition member (1500 × 6) coated with 2 μm of a thermosetting epoxy primer was used.
00 × 0.6 mm).

The coated plate was heated to a temperature of 80 ° C. with hot air at 150 ° C.
The solvent was scattered under the condition that the temperature was kept at 50 ° C. (in the furnace for about 50 seconds), and then cured by an electron beam. Curing conditions: voltage 300 kV, current 25 mA / 60 cm, dose 3 Mrad, oxygen concentration during irradiation, 150 ppm A partition was produced from this cured coated plate. The stain resistance test and the coating film test such as hardness described above were performed.

(Contamination resistance) Even if characters were written with a marker for whiteboard manufactured by Pilot Co., Ltd., it could be completely erased with an eraser. In addition, magic ink (red, blue), curry, mustard, lipstick, crayon, colored pencils, ink was applied to a coated plate, and after 24 hours, it was wiped off easily with a gauze dipped in ethanol, without traces.

(Chemical resistance) About 1 cc of 2% hydrochloric acid, acetic acid, sulfuric acid, citric acid, nitric acid, caustic soda, ammonia, etc., and ethanol, benzine, methyl ethyl ketone, acetone, xylene, ethyl acetate are dropped on the coating film. Then, it was covered with a watch glass and left standing for 24 hours while preventing scattering, washed with water and air blow, and then visually judged, but no change was observed in the coating film. (Pencil hardness) 8H (Gloss) 85

[0016]

By using the interior wall material having the function of the writing board of the present invention, it can be directly used as a white board and can be immediately used as a classroom or a conference room. Moreover, if a large room is partitioned by a partition using interior wall materials, it can be used efficiently as a meeting room without a white board immediately. Also, it can be easily removed from dirt, so it can be used as a stain resistant wall material in kitchens and bathrooms.

Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location D06N 3/00 D06N 3/00 E04B 2/74 541 E04B 2/74 541N E04F 13/08 8913-2E E04F 13 / 08 H

Claims (2)

[Claims] 1. A (meth) acryloyl group is used in each molecule.
More than one and (meth) acryloyl group equivalent is 500
The first component is 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 are contained in one molecule. Ethylene glycol dimethacrylate containing and having a methacryloyl group equivalent of 121 or less,
The first component is a polyhydric alcohol methacrylate selected from diethylene glycol dimethacrylate and trimethylolpropane trimethacrylate, and the first component is
The mixing ratio of the component and the second component is the first component / second component = 1 /
0.5 to 1/2 (weight ratio) of a coating material is applied to an object to be coated, and the coating layer is formed by curing the coating material with an electron beam in an atmosphere having an oxygen concentration of 1% or less. Lighting with excellent stain resistance by forming the cover layer on any of metal plates, hard boards, particle boards, wood boards such as wood, asbestos boards, rock wool boards, inorganic boards such as gypsum boards, and plastic boards. Interior and interior wall material that has the function of a board. 2. A (meth) acryloyl group is used in each molecule.
More than one and (meth) acryloyl group equivalent is 500
The following polyester (meth) acrylates, polyhydric alcohols (meth) containing two or more (meth) acryloyl groups in one molecule and having a methacryloyl group equivalent of 150 or less.
Acrylate, silica-based extender having an oil absorption of 150 g / 100 g or more, and a coating containing a polymer having a molecular weight of 500 or more as an essential component are applied to an object to be coated, and this is applied by an electron beam in an inert gas with an oxygen concentration of 1% or less In the coating layer formed by curing, the coating layer is 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. An interior and interior wall material that functions as a writing board with excellent stain resistance.