JPH11158420A - Colored phosphorescent coating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provided a colored phosphorescent coating which can ease the restrictions of patterns and color-arrangements in printing- and coating use, by providing the ability of obtaining the deep colors corresponding to colors of fluorescent pigments and organic ones even at a light place. SOLUTION: A colored phosphorescent coating is formed by adding and blending a fluorescent pigment- and organic pigment-contg. resin to a phosphorescent coating having a base of a transparent resin and a phosphorescent pigment. As an example, a pastel-tone, green-colored phosphorescent coating is obtained by blending 100 g of a phosphorescent pigment, 20 g of a fluorescent pigment, 100 g of a transparent resin, and 50 g of an organic pigment-contg. resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color luminous paint which can be visually recognized even in a bright place by adding a coloring pigment.

[0002]

2. Description of the Related Art A phosphorescent paint is a mixture of a transparent resin and a phosphorescent pigment. The phosphorescent pigment is stimulated by light energy from the ultraviolet to the visible portion, and the stored energy is gradually changed to light after the stimulation is stopped. It emits light. In recent years, luminous pigments used in luminous paints have been developed that have high light emission and can emit light for a long time, and luminescent colors include basic green, blue, red, and purple.

[0003] A printed material or a coated material using such a luminous paint can be identified by the luminescence of the luminous pigment even at night, so that it is widely used for stickers, information boards, signs, decorative articles, clothing, and the like.

[0004] By the way, the conventional ordinary luminous paint uses a luminous pigment that emits light of various colors in a dark place. However, in a bright place, it becomes a pale yellow-green color close to white, which is the color of the luminous pigment in the first place. Visibility is low in bright places. Therefore, when used for printing or painting, restrictions are imposed on the design and color arrangement. In order to change the color of the luminous paint, a fluorescent pigment or an organic pigment is added to the luminous paint as described in JP-A-3-166269.

A color luminous paint obtained by adding a fluorescent pigment to a luminous paint is prepared by adding 10 parts by weight of a fluorescent pigment to 100 parts by weight of a luminous pigment and mixing them sufficiently in a mortar.
The mixture is sieved with a mesh, and 60 parts by weight of an acrylic resin is added to the powder to obtain a paint. The color luminous paint obtained by adding an organic pigment to the luminous paint is, for example, 0.05 parts by weight of the organic pigment is added to 100 parts by weight of the luminous pigment, mixed well in a mortar, and then sieved with a 300 mesh, and the resulting powder A paint was prepared by adding 60 parts by weight of an acrylic resin. According to these color luminous paints, it is said that colorization can be achieved within a range in which a decrease in luminous performance of the luminous paint does not cause a practical problem.

[0006]

However, although the above-mentioned luminous paint shows color even in a bright place due to the addition of a fluorescent pigment or an organic pigment, the fluorescent pigment has a problem in light resistance and its use place is limited. Addition of an organic pigment within a range that does not interfere with the luminous storage and emission of the luminous pigment gives only a pale color called pastel color, and the picture and color restrictions are somewhat relaxed, but still unsatisfactory. Met.

That is, the luminous pigment is originally light yellowish green which is close to white, and looks pink when mixed with a red fluorescent pigment or an organic pigment, for example, and becomes pale when mixed with a green fluorescent pigment or an organic pigment. Looks green. Increasing the amount of fluorescent pigments or organic pigments added to make the color appear darker prevents light storage and light emission.Fluorescent pigments have low light resistance and maintain the performance of paints and develop dark colors in bright places. It was difficult to make them compatible.

The problem to be solved by the present invention is to obtain a color luminous paint capable of developing a dark color in a bright place while maintaining the performance of the luminous paint.

[0009]

The color luminous paint of the present invention comprises luminous pigments 20 to 20 per 100 parts by weight of transparent resin.
0 part by weight, 5 to 50 parts by weight of a fluorescent pigment, and 0.5 to 50 parts by weight of an organic pigment-containing resin are added and mixed.

As the luminous pigment used in the present invention, luminous pigments conventionally used in luminous paints can be used. In consideration of the combination of colors with fluorescent pigments described later, the luminescent color of the luminous pigment and the fluorescent pigment It is more preferable that the color of the phosphorescent paint to which is added is normally similar to the color that can be seen. For example, if the original luminescent color is a green phosphorescent pigment, when a green fluorescent pigment is used, the normally visible color will be the same green as the luminescent color, and it will look the same color regardless of brightness, so you will feel uncomfortable Less is. In addition, when a fluorescent pigment having a similar color to the emission color of the luminous pigment is used, the emission luminance increases. However, it is, of course, possible to combine the colors so that the colors that can be seen at normal times and the emission colors are different colors. For example, a combination of a luminous pigment whose primary luminescent color is green and a fluorescent pigment of red can be pink at normal times and orange at luminous color.

[0011] The fluorescent pigment is red,
Existing fluorescent pigments such as blue, yellow and green can be used. If the amount of the fluorescent pigment is less than 5 parts by weight with respect to 100 parts by weight of the transparent resin, the color is too light, and
If the amount is more than 5 parts by weight, the emission luminance is reduced. The particle size of the fluorescent pigment is preferably equal to or smaller than the particle size of the luminous pigment from the viewpoint of maintaining the luminous performance. If the particle size of the fluorescent pigment is larger than the particle size of the phosphorescent pigment,
It hinders the light storage and emission of the luminous pigment, thereby reducing the performance of the luminous pigment.

The transparent resin serves as a pigment binder similarly to the conventional phosphorescent paint, and is, for example, a urethane-based colorless resin. The ratio of transparent resin and phosphorescent pigment is
The luminous pigment is 20 to 200 parts by weight based on 100 parts by weight of the transparent resin. The ratio of phosphorescent pigment to transparent resin is 20%
If it is less than the above, the amount of light storage / emission is too small, and if it is more than twice, the function as the original paint is reduced.

[0013] The organic pigment-containing resin is used for reinforcement in order to bring the color of the luminous paint, which has become pastel and fluorescent by adding a fluorescent pigment, close to a desired color and density. The organic pigment-containing resin may be of the same color as the fluorescent pigment, or may be a combination of different colors. For example, an orange color can be formed by combining a yellow fluorescent pigment and a red organic pigment-containing resin. As the organic pigment-containing resin, one or both of a translucent resin and a colored resin can be used, and the addition ratio varies depending on the usage ratio of the translucent resin and the colored resin and the content of the organic pigment. When using only a translucent resin, the range is 5 to 50 parts by weight based on 100 parts by weight of the transparent resin, and when using only the colored resin, the range is preferably 0.5 to 20 parts by weight based on 100 parts by weight of the transparent resin. It is. The translucent resin and the colored resin are the same in terms of the source of the organic pigment. From the point of view, translucent resin is more suitable than colored resin.

A printed matter or a painted matter using the color luminous paint of the present invention having the above composition develops a dark color even in a bright place. A conventional phosphorescent paint using only a fluorescent pigment or only an organic pigment has a pale pastel color. However, the fluorescent pigment is combined with an organic pigment-containing resin and reinforced to provide a deep color. When the organic pigment-containing resin is within the above-mentioned usage range, it does not hinder the light storage and light emission of the luminous pigment, and thus emits light in a dark place in the same manner as a conventional luminous paint. At the time of this light emission, it emits light of a color determined by the original light emission color of the luminous paint and the color of the fluorescent pigment by interfering with the color of the fluorescent pigment.

[0015]

[Example 1]

・ Blending of luminous paint Luminescent pigment: CP05, 100g manufactured by Chemitech Fluorescent pigment: Green, 20g, manufactured by Mino Group Transparent resin: RUX medium manufactured by Seiko Advance,
100 g Organic pigment-containing resin: RUX halftone ink green, manufactured by Seiko Advance Co., Ltd. 50 g Mix phosphorescent pigment in transparent resin, add fluorescent pigment to this to obtain pastel-colored phosphorescent paint, and add translucent resin Thus, a luminous paint having a desired color density is obtained. -Printing of paint Using the above-mentioned phosphorescent paint, a pattern was screen-printed on a 100-μm-thick vinyl chloride sheet with an adhesive using a Tetron 100 mesh plate. -Color development in bright places The phosphorescent paint developed green color, and the pattern was clearly visible as a whole. -Color development in dark places The luminous paint portion developed a bright green color due to the emission of the luminous pigment, and the entire pattern could be confirmed even in dark places.

[Example 2]-Formulation of luminous paint Luminescent pigment: CP05, 100g manufactured by Chemitech Fluorescent pigment: Green, 20g manufactured by Mino Group Transparent resin: PLUM halftone base manufactured by Union Ink, 100g Organic pigment-containing resin : PLUM, green, 5 g, manufactured by Union Ink Co., Ltd. Printing of paint A picture was screen-printed on a cloth using a Tetron 100 mesh plate. -Coloring in bright places In both bright and dark places, the phosphorescent paint developed a green color, and the pattern was clearly visible.

[0017]

According to the present invention, the following effects can be obtained.

(1) A fluorescent pigment and an organic pigment-containing resin are added and mixed in a specific ratio to a luminous paint based on a transparent resin and a luminous pigment, so that even in a bright place, a dark color corresponding to the color of the fluorescent pigment and the organic pigment is obtained. Color can be obtained. This alleviates restrictions on the pattern and color arrangement when used for printing and painting.

(2) By using a fluorescent pigment having a particle size equal to or smaller than the particle size of the luminous pigment, a dark color can be developed in a bright place without hindering the luminous storage and emission of the luminous pigment.

(3) By using a translucent resin as the organic pigment-containing resin, fine adjustment of the amount of the organic pigment that does not hinder the light storage and emission of the luminous pigment can be easily performed, and a beautiful color can be obtained. .

Claims (3)

[Claims] 1. A color obtained by adding and mixing 20 to 200 parts by weight of a luminous pigment, 5 to 50 parts by weight of a fluorescent pigment, and 0.5 to 50 parts by weight of an organic pigment-containing resin with respect to 100 parts by weight of a transparent resin. Phosphorescent paint. 2. The color luminous paint according to claim 1, wherein the particle size of the fluorescent pigment is substantially equal to or smaller than the particle size of the luminous pigment. 3. The color phosphorescent coating according to claim 1, wherein the organic pigment-containing resin is a translucent resin.