JPH07290656A - Acrylic resin laminate and production thereof - Google Patents

Abstract

PURPOSE:To obtain a varicolored laminate by integrally laminating at least two resin panels each composed of a colorless or colored transparent acrylic resin panel through a colored adhesive layer and freely changing the color and density of the acrylic resin panels or the adhesive layer. CONSTITUTION:An acrylic resin laminate is constituted of a resin panel selected from a colorless transparent acrylic resin panel 1 and a colored transparent acrylic resin panel 2. The colored adhesive layer 3 in the laminate is used in order not only to laminate and integrate the acrylic resin panels mutually but also to impart a hue to the laminate. The acrylic resin laminate is produced, for example, by applying a colored adhesive to the acrylic resin panel and laminating the other acrylic resin panel on the adhesive layer to unify both panels and pressing and integrating the whole or by arranging the colored adhesive between two acrylic resin panels obtained by a casting polymerization method to bond and integrate both panels.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an acrylic resin laminate and a method for producing the same, and more particularly to design materials such as sundries and figurines, interior decoration materials, furniture materials such as lighting, art works and products such as objects. The present invention relates to an acrylic resin laminate having a color that can be used for applications such as signboards and displays, and a method for producing the same.

[0002]

2. Description of the Related Art Acrylic resins are excellent in transparency, coloring and weather resistance, and are light, tough and easy to process. As a material, it is used in various fields such as signboards, lighting equipment parts, and automobile parts.

Recently, the properties of acrylic resins have been utilized to spread the use as various design materials for objects, figurines and the like. As the acrylic resin used for these design materials, a colored resin is generally used. As a method for producing the colored acrylic resin material, for example, a method of sticking and laminating a colored film or a colored transparent sheet material such as a colored resin plate on an acrylic resin square bar is adopted. There is a limit, and it is difficult to add shades of color freely, and further, since the colored transparent sheet material is attached and integrated with an adhesive, its adhesive interface is not clear and the color is lowered. there were.

[0004]

DISCLOSURE OF THE INVENTION As a result of intensive studies made by the present inventors in view of the above situation, they have found that the above problems can be solved by adopting a specific laminating / integrating method. Was completed. That is, the present invention is an acrylic resin laminate in which at least two resin plates selected from colorless or colored transparent acrylic resin plates are bonded and integrated via a colored adhesive layer.

Further, according to the present invention, a colored adhesive is provided between at least two resin plates selected from colorless or colored transparent acrylic resin plates obtained by a casting polymerization method to bond and integrate them. And a method for producing an acrylic resin laminate.

The present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an example of the acrylic resin laminate of the present invention, and FIGS. 2 and 3 are sectional views showing another example of the present invention. 1-3, 1 is a colorless transparent acrylic resin plate,
2 is a colored transparent acrylic resin plate, and 3 is a colored adhesive layer.

The acrylic resin laminate in the present invention is composed of a colorless transparent acrylic resin plate 1 or a colored transparent acrylic resin plate 2. These acrylic resin plates are obtained by ordinary template polymerization of a partial polymer of methyl methacrylate or a monomer mixture containing methyl methacrylate as a main component in a mold composed of inorganic glass or a stainless plate. be able to.

The colored transparent acrylic resin plate can be obtained by blending a dye with a partial polymer of methyl methacrylate or a monomer mixture containing methyl methacrylate as a main component, and performing ordinary template polymerization.

Examples of dyes used to obtain a colored transparent acrylic resin plate include Sumiplast Yellow (manufactured by Sumitomo Chemical Co., Ltd.), Mitsui PS Yellow GG (manufactured by Mitsui Toatsu Dyes Co., Ltd.), and spin dye. Ron Yellow GRCH Special, Spiron Orange 2RH (both manufactured by Hodogaya Chemical Co., Ltd.), Diamond Resin Red HL, Diamond Resin Red HS, Diamond Resin Red S (all manufactured by Mitsubishi Kasei Co., Ltd.), Mitsui PS Brilliant Pink FFR
(Manufactured by Mitsui Toatsu Dye Co., Ltd.), Spiron Red GEH, Spiron Red BEH (both Hodogaya Chemical Co., Ltd.)
Made), Celeste Red B (made by Bayer), Sumiplast Tread 3B (made by Sumitomo Chemical Co., Ltd.), Amaplast Pink 4B (made by Aniline, USA), Diamond Resin Violet D (made by Mitsubishi Kasei) , Diamond Resin Blue G, Diamond Resin Blue C, Diamond Resin Blue N,
Diamond Resin Blue LR (both are Mitsubishi Kasei Co., Ltd.)
Manufactured by Mitsui Toatsu Dye Co., Ltd.)
Etc.

The thickness of the acrylic resin plate used in the present invention is not particularly limited, but a commercially available product having a thickness of about 0.8 to 100 mm is used.

Colored adhesive layer 3 in the laminate of the present invention
Is used to add color to the laminate at the same time as laminating and integrating the acrylic resin plates. The colored adhesive layer is composed of an adhesive capable of adhering an acrylic resin mixed with a dye or a pigment.

As the adhesive, an organic solvent such as chloroform, methylene dichloride, or acetone, which can dissolve an acrylic resin, a monomer of methyl methacrylate containing a polymerization initiator or a partial polymer thereof is used. In the present invention, it is preferable to use the latter methyl methacrylate adhesive having the same refractive index as that of the acrylic resin plate from the viewpoint of the optical characteristics of the obtained laminate.

A dye or a pigment is used as a colorant to be mixed with the adhesive. As the dye, the dye used for obtaining the above colored transparent acrylic resin plate can be used. Examples of usable pigments include inorganic pigments such as titanium oxide, barium sulfate, and calcium carbonate, Taipaque (manufactured by Ishihara Sangyo Co., Ltd.), ET base color (manufactured by Dainichiseika Kogyo Co., Ltd.), and fellow color (Japan Fellow Co., Ltd., plastic colorant (Toyo Ink Co., Ltd.)
Manufactured) and the like. The colors and concentrations of the dyes and pigments to be mixed with the adhesive may be appropriately selected and used as desired, and the formulation thereof is not particularly limited. The thickness of the colored adhesive layer for adhering the acrylic resin plate is in the range of 0.1 to 10 mm.

The method for producing the acrylic resin laminate of the present invention is not particularly limited, but, for example, after coating a colored adhesive on an acrylic resin plate, another acrylic resin plate is laminated on the acrylic resin plate and pressed. Integral method, or make a laminated mold with two or more acrylic resin plates and a soft vinyl chloride resin gasket, and pour the colored methyl methacrylate partial polymer into the mold to polymerize and laminate And the like.

The acrylic resin laminate of the present invention is composed of at least two colorless or colored transparent acrylic resin plates, but the structure is not particularly limited, and FIG.
2 may be composed of only two colorless transparent acrylic resin plates, or may be composed of only two colored transparent acrylic resin plates as shown in FIG. Further, as shown in FIG. 3, a colored transparent acrylic resin plate may be sandwiched between two colorless transparent acrylic resin plates. Further, the laminate of the present invention is not limited to the above-mentioned two layers and three layers, and may have a four-layer structure, a five-layer structure or a layer structure of more layers as long as the present invention is satisfied.

[0016]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. Example 1 A colored adhesive was prepared by dissolving 1.2 g of Sumiplast Tread 3B (manufactured by Sumitomo Chemical Co., Ltd.) in a solution consisting of 90 g of methylene dichloride and 10 g of diacetone alcohol. Next, two 100 mm × 100 mm × 5 mm (thickness) colorless and transparent acrylic resin plates (Acrylite (registered trademark) S # 001 manufactured by Mitsubishi Rayon Co., Ltd.) were bonded together with the above-mentioned colored adhesive, and a sack It was fastened and laminated. The obtained acrylic resin laminate had a feature that the edge portion of the laminate emits transparent or fluorescent red light depending on the viewing angle.

Example 2 To 300 g of methyl methacrylate monomer, 0.3 g of 2,2'-azobis- (2,4-dimethylvaleronitrile) (polymerization initiator) and dialyzin blue LR (Mitsubishi Kasei Co., Ltd.) 0.1 g) was dissolved and degassed to obtain a colored adhesive. Next, two 300 mm × 300 mm × 5 mm (thickness) fluorescent color acrylic resin plates (Acrylite # 933, manufactured by Mitsubishi Rayon Co., Ltd.) and an adhesive layer having a thickness of 1 mm in advance.
Using a soft vinyl chloride resin gasket set to be, form a mold of two acrylic resin plates laminated,
The above colored adhesive was poured into the mold (adhesive layer portion), heated in an autoclave at 60 ° C. for 3 hours, and then heat-treated at 80 ° C. for 3 hours. The obtained acrylic resin laminate was a multicolor body by color synthesis and was vivid.

Example 3 Methyl methacrylate partial polymer having a polymerization rate of 20% (hereinafter,
It is called syrup. ) 600 g, 2,2'-azobis-
0.2 g of (2,4-dimethylvaleronitrile) was dissolved, and the syrup was divided into 300 g each for 2 minutes. And on one syrup, Diamond Resin Red S (Mitsubishi Kasei Co., Ltd.)
(Made by Mitsubishi Kasei Co., Ltd.), and 0.003 g of the resin is dissolved in the other syrup.
003 g was melt | dissolved, the deaeration process was performed after melt | dissolution, and the adhesive of two colors was obtained. Next, if the thickness of the adhesive layer is 3
Using a soft vinyl chloride resin gasket set to have a size of 300 mm, 300 mm x 300 mm x 50 mm
(Thickness) colorless transparent acrylic resin plate (Mitsubishi Rayon Co., Ltd., Acrylite S # 001)
A transparent glass-colored acrylic resin plate (Acrylite LG514, manufactured by Mitsubishi Rayon Co., Ltd.) having a size of 0 mm × 300 mm × 5 mm (thickness) was sandwiched to form a template of three acrylic resin plates laminated. Then, each of the above adhesives was poured into a separate mold (adhesive layer portion), and the mixture was placed in an autoclave at 40
After heating at 0 ° C for 5 hours, heat treatment was performed at 80 ° C for 8 hours. The obtained acrylic resin laminate was a multicolored body by color synthesis, and the color changed depending on the viewing angle, and the color was vivid.

[0019]

EFFECTS OF THE INVENTION The acrylic resin laminate of the present invention having the above-mentioned constitution can freely change the color and concentration of the acrylic resin plate or the adhesive, so that a multicolored laminate can be provided. Further, the acrylic resin laminate of the present invention has a clearer laminate interface and excellent optical characteristics as compared with the conventional color film sticking method. From the above characteristics, the acrylic resin laminate of the present invention is very useful for design materials such as sundries, interior decoration materials, furniture materials such as lighting, art works and products such as objects, signs, and displays.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of an acrylic resin laminate of the present invention.

FIG. 2 is a sectional view showing another example of the acrylic resin laminate of the present invention.

FIG. 3 is a cross-sectional view showing another example of the acrylic resin laminate of the present invention.

[Explanation of symbols]

 1 Colorless transparent acrylic resin plate 2 Colored transparent acrylic resin plate 3 Colored adhesive layer

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Tsuneo Kano 2-3-19 Kyobashi, Chuo-ku, Tokyo Within Mitsubishi Rayon Co., Ltd. Company Tokyo Institute

Claims (2)

[Claims] 1. An acrylic resin laminate in which at least two resin plates selected from colorless or colored transparent acrylic resin plates are laminated and integrated via a colored adhesive layer. 2. A coloring adhesive is disposed between at least two resin plates selected from colorless or colored transparent acrylic resin plates obtained by a casting polymerization method to bond and integrate them. A method for manufacturing an acrylic resin laminate.