JPH06170013A - Golf ball - Google Patents

Abstract

PURPOSE:To provide the golf ball having characteristic appearance, such as a change in tint according to viewing angles. CONSTITUTION:Pigments which are made to develop colors by the interference effect of reflected light are incorporated into the paint layer of the ball surface or ball body of the golf ball. Pigments formed by using mica as a nucleus and coating the circumference thereof with a light reflective material consisting of titanium oxide as a chief material are adequately used as these pigments which are made to develop colors by the interference effect of the reflected light.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to golf balls having a distinctive appearance.

[0002]

2. Description of the Related Art Conventionally, the appearance of golf balls has been almost white. Although a golf ball having a characteristic color tone such as a fluorescent color ball has been proposed, however, it has not been widely accepted by golfers due to problems such as difficulty in distinguishing it on a lawn.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in the appearance of conventional golf balls,
An object is to provide a golf ball having a more characteristic appearance.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a pigment that develops color due to the interference of reflected light is contained in the paint layer on the surface of the ball or the ball body, so that the hue is subtly changed depending on the viewing angle of the golf ball. To achieve the above object.

In the present invention, the pigment which is contained in the paint layer on the surface of the ball or the body of the ball and develops color by the interference of reflected light has a flaky or scaly crystalline powder such as mica as a nucleus (matrix), The main component is a material having a high light-reflecting property whose main component is titanium oxide, which is uniformly covered.

In the above pigment, the reflected light from the titanium oxide surface and the reflected light from the mica interfere with each other to produce a clear pearlescent color, and since the pigment is flaky, the interference action has a direction. The hue changes depending on the angle. Further, the thickness of the titanium oxide coating is 0.02 to 0.
By changing the wavelength in the range of 2 μm, the interference wavelength changes, and various coloring colors can be selected.

[0007] In the above pigment, the core mica is generally natural white mica, and the particle size thereof is not particularly limited, but the smaller the particle size, the flatter the shape is as beautiful as possible. Easy to exhibit pearl luster.

The light-reflecting substance that coats the periphery of the mica is mainly composed of titanium oxide. This titanium oxide as the main material means that titanium oxide alone or a color pigment is added to titanium oxide. If both are referred to. Titanium dioxide is generally used as the titanium oxide, and a coating of only titanium dioxide provides a pearlescent luster and an interference color (a color developed by the interference of reflected light) under a white base.

On the other hand, when a colored pigment is added to titanium dioxide or a two-layer coating having a lower order titanium oxide as an inner layer and titanium dioxide as an outer layer is applied, a pearlescent luster under a colored base is obtained. Interference colors are obtained. In the present invention, these pigments are used singly or in combination of two or more kinds to finish a golf ball having an appearance of a desired color tone.

Commercially available pigments that develop color by the interference of reflected light as described above include those based on color, for example, Shiseido Co., Ltd. under the trade name "Infinite Color".
[CR-02-L1 (red system), VR-02 (red system), B
RP-02 (magenta), GBG-02 (blue-green), YY-
02 (gold), GG-02-L1 (green), BB-0
2-L1 (blue) and other brands of various tones], the product name "Kroisone" of Marl Inc. (Gold, Red,
Blue, green) and the like, all of which can be preferably used in the present invention.

For white-based products, Dainippon Paint Co., Ltd.
There are types that are easy to handle, such as pearl blue and pearl yellow of the product name "Auto Mica Base" (paint type) that are easily dispersed in paint.

In the present invention, the above-described pigment that develops color due to the interference of reflected light is contained in the paint layer on the surface of the golf ball or the ball body. Of these, a smaller amount is contained in the paint layer. It is preferable because a desired effect can be obtained.

For example, when the paint layer is composed of two layers, an inner enamel paint layer and an outer clear paint layer, a method of incorporating the above pigment into the inner enamel paint layer or an outer clear paint layer is used. In the case of forming a layer, various methods such as a method of incorporating it in the clear paint layer on the inner layer side, a method of incorporating it in the underlying clear paint layer on the inner layer side when the paint layer is composed only of the clear paint layer can be adopted. Is.

In the paint layer, in addition to the pigments that develop color by the interference effect of the reflected light, white pigments such as titanium oxide, white mica, zinc sulfide, organic and inorganic general colorants, colored mica, and fluorescent pigments. , A metallic pigment, etc. may be contained. Then, a desired base color is adjusted with one or a combination of two or more of these pigments. These pigments are preferably contained in the same layer as the pigment that develops color due to the interference of reflected light, or in a layer inside the layer that contains the pigment that develops color due to the interference of reflected light.

The amount of the pigment that develops color due to the interference of reflected light in the paint layer is 0.1 to 50 parts by weight, particularly 0.5 to 20 parts by weight, based on 100 parts by weight of the base resin for paint. Is preferred.

As the base resin for paint, various resins such as urethane resin, epoxy resin and acrylic resin can be used, but the urethane resin based resin which forms a tough coating film with particularly good deformation followability. Is preferred.

The thickness of the paint layer containing the pigment that develops color due to the interference of the reflected light is not particularly limited, but is preferably about 5 to 60 μm, particularly 10 to 10.
40 μm is preferable.

The present invention can be applied to any type of golf ball, including wound golf balls and solid golf balls. And in those golf balls,
When the paint layer is composed only of clear paint, a pigment forming a color by the interference action of the reflected light may be contained in the cover forming a part of the ball body.

[0019]

According to the present invention, by providing a paint layer on the surface of the ball or the ball body with a pigment that develops color due to the interference of reflected light, a golf ball having an appearance in which the hue changes depending on the viewing angle is provided. be able to.

As a pigment that develops color due to the interference of reflected light, a mica is used as a core, and the periphery of the pigment is coated with a light-reflecting substance containing titanium oxide as a main material. It is possible to impart a pearlescent color tone with a certain color.

[0021]

EXAMPLES The present invention will be specifically described below with reference to examples. However, the present invention is not limited to only those examples.

Examples 1 to 4 A non-yellowing type urethane containing 40% by weight of titanium dioxide as the first layer of primer paint on the surface of a two-piece golf ball consisting of a solid core and a cover mainly composed of an ionomer resin. Painted.

Next, on the primer paint layer,
A yellowing-free urethane paint containing 3% by weight of a pigment that develops color due to the interference action shown in Table 1 was applied, and after printing a mark, a yellowing-free urethane resin top clear paint was applied to finish.

The thickness of each paint layer is about 10 to 2
At 0 μm, the average thickness was about 15 μm. In addition, Table 1
In the above, the names of pigments (pigments that develop color due to the interference effect of reflected light) are indicated by the above trade names.

[0025]

[Table 1]

Examples 5 to 15 The surface of a two-piece golf ball consisting of a solid core and a cover mainly composed of an ionomer resin was coated with 40% by weight of titanium dioxide as the first layer of paint and the reflected light of Table 2 A non-yellowing type urethane paint was added in which the pigments that develop color due to the interference action were added in the amounts shown in Table 2.

Next, after the mark was printed on the paint layer, a non-yellowing urethane resin-based clear paint was applied to finish. The thickness of each paint layer is about 10
At 20 μm, the average thickness was about 15 μm. In addition, also in Table 2, the names of the pigments (pigments that develop color by the interference effect of reflected light) are shown by the above-mentioned trade names.

[0028]

[Table 2]

The golf balls of Examples 1 to 15 in which the paint layer was formed as described above all had a deep color tone of pale pearl luster, and the hue was slightly changed depending on the viewing angle. .

A monitor test was conducted by 50 amateur golfers on the golf balls of Examples 1 to 15, and many evaluations showed that the golf balls were beautiful in color and were easy to identify on the lawn. It was generally well received.

Claims (2)

[Claims] 1. A golf ball comprising a paint layer on the surface of a ball or a ball body containing a pigment that develops color due to the interference of reflected light, and the hue of which changes depending on the viewing angle. 2. A pigment which develops color due to interference of reflected light is composed of composite particles having mica as a core and a periphery thereof covered with a light-reflecting substance containing titanium oxide as a main material, and having a pearlescent color tone. The golf ball according to claim 1, which is a golf ball.