JPH04364942A - Colored product - Google Patents

Abstract

PURPOSE:To provide a colored product having beautiful appearance, providing a good impression to an observer such as a feeling of high quality and gorgeousness and having excellent wear resistance and chem. resistance. CONSTITUTION:A thin film layer 3 producing an optical path difference in a reflective light in accordance with an angle of an incident light coming from the outside is formed on a base material 2. A protective layer 10 consisting of a transparent resin is formed on the thin film layer 3. In addition, especially, the thin film layer is formed of titanium alone at least part of which has been oxidized or a mixture of titanium at least part of which has been oxidized and aluminum at least part of which has been oxidized.

Description

[Detailed description of the invention]

0001

FIELD OF THE INVENTION This invention relates to colored products.

0002

2. Description of the Related Art Conventionally, colored products have been proposed in which the surface of a base material such as a resin, metal, or glass is decorated with a metal such as aluminum or titanium by a method such as sputtering. However, the above-mentioned colored products had drawbacks such as poor change in the decorative film and poor decorativeness.

[0003] Therefore, the present inventors have previously proposed a colored product that can give the viewer a good impression of luxury and splendor, and has an excellent aesthetic appearance (Patent Application No. 2-52).
No. 516, Japanese Patent Application No. 2-87784). In other words, the colored product proposed in Japanese Patent Application No. 2-52516 is shown in Figure 4.
As shown in FIG. 4, a thin film 32 (a multilayer film is used in FIG. 4) made of a metal compound that causes an optical path difference in reflected light depending on the angle of incident light incident from the outside on the surface of an opaque base material 31 such as an aluminum plate. ).

On the other hand, in the colored product proposed in Japanese Patent Application No. 2-87784, as shown in FIG. A thin film 36 is formed of titanium, which is either alone or a mixture of titanium, which is at least partially oxidized, and aluminum, which is at least partially oxidized.

[0005]

[Problems to be Solved by the Invention] However, although each of the above-mentioned colored products has an excellent appearance and can give a good impression of luxury and splendor to the viewer, they have the following problems. In other words, the surfaces of each of the above-mentioned colored products are formed by thin films 32 and 36 of metal compounds, and there are some problems with the durability of the surfaces, especially the durability with respect to abrasion resistance and chemical (alkali) resistance. It was a little inferior in sex.

The present invention has been made to solve the above-mentioned problems, and its purpose is to provide an excellent aesthetic appearance and give a good impression of luxury and glamor to the viewer, as well as to provide wear resistance. Our objective is to provide colored products with excellent chemical resistance.

[0007]

[Means for Solving the Problems] In order to achieve the above object, a first aspect of the present invention provides an opaque base material and a material formed on the surface of the opaque base material that responds to the angle of incident light incident from the outside. The gist is a colored product consisting of a thin film layer that creates an optical path difference in reflected light, and a protective layer made of transparent resin formed on the thin film layer.

[0008] The second invention also provides a base material consisting of a substrate or a metal film layer formed on the substrate, and titanium alone or at least partially oxidized on the same base material. A colored product consisting of a thin film layer made of a mixture of at least partially oxidized titanium and at least partially oxidized aluminum, and a protective layer made of a transparent resin formed on the thin film layer. This is the summary.

In the present invention, the refractive index of each of the protective layers is preferably 1.55 or less, more preferably 1.50 or less. When the refractive index is greater than 1.55, the hue of the thin film layer may change significantly,
This is not desirable because it may impair the aesthetic appearance. As the material for the protective layer, a two-component urethane paint is preferably used.

It is also possible to add a coloring agent such as a pigment to the protective layer to protect the color tone of colored products.

[0011]

[Operation] In the first invention, the thin film layer formed on the surface of the opaque base material and causing an optical path difference in reflected light depending on the angle of incident light incident from the outside is made of a transparent resin formed thereon. protected by a protective layer consisting of As above, since the protective layer is transparent, the aesthetic appearance of the thin film layer is not impaired.

[0012] Furthermore, in the second invention, titanium alone or at least partially oxidized titanium and aluminum, at least partially oxidized, formed on the base material. The thin film layer made of the mixture is protected by a protective layer made of transparent resin formed thereon. Since the protective layer is transparent, the aesthetic appearance of the thin film layer is not impaired.

[0013]

[Examples] Examples embodying the present invention are shown below in Figures 1 to 3.
The explanation will be based on. (Example 1 and Comparative Example 1) Figure 1 shows the colored product 1 of this example.
FIG. As shown in the figure, the base material 2 as an opaque base material of the colored product 1 is made of an aluminum plate with a smooth surface, and a thin film layer 3 made of a multilayer film is formed on the surface of the base material 2. ing. The thin film layer 3 is made of cerium fluoride (CeF3) with a thickness of 84 nm as the first layer 4, and zirconium oxide (ZrO2) with a thickness of 134 nm as the second layer 5.
), magnesium fluoride (MgF2) with a thickness of 100 nm is deposited as the third layer 6, and
The fourth to sixth layers 7 to 9 are formed by repeatedly depositing layers 4 to 6.

Furthermore, a protective layer 10 made of transparent resin is formed on the surface of the thin film layer 3. This protective layer 10 is made of a two-component urethane paint (manufactured by Fujikura Kasei Co., Ltd., product name: EXT5406) with a film thickness of about 20 μm.
It was heat treated at 0°C for 30 minutes. The colored product 1 configured as described above was designated as Sample 1, and the product in which no protective layer was formed on the surface of the thin film layer 3 was designated as Comparative Sample 1. Each of these samples had a beautiful appearance, with the hue changing between green and pink depending on the viewing angle. Each of these samples was then subjected to durability tests under various conditions.

[Acid resistance test] The appearance of each sample was evaluated after being immersed in a 0.1 normal sulfuric acid aqueous solution at room temperature for 24 hours (○...ΔE is 2.0 or less). [Alkali resistance test] The appearance of each sample was evaluated after being immersed in a 0.1N aqueous sodium hydroxide solution at room temperature for 24 hours (○...ΔE is 2.0 or less).

[Abrasion resistance test] Taber type abrasion test was performed under the conditions of roughness CS#10 and load of 500g, and evaluated by the number of times of wear until the base material was exposed (○...the number of times of wear was 10)
00 times or more). [Water resistance test] The appearance of each sample was evaluated after being immersed in water at 40°C for 240 hours (○...Global adhesion was 0/1
00).

[Volatile oil resistance test] Each sample was immersed in a 1:1 mixed solvent of n-hexane/n-heptane for 24 hours at room temperature and evaluated for its appearance (○...ΔE is 2.0 or less). The results of the above tests are shown in Table 1.

[0018]

[Table 1]

As can be seen from Table 1 above, the thin film layer 3
It can be seen that Sample 1 on which the protective layer 10 is formed has superior acid resistance, alkali resistance, and abrasion resistance compared to Comparative Sample 1 on which no protective layer is formed. Also,
There was no inferiority to Comparative Sample 1 in terms of water resistance and volatile oil resistance.

(Examples 2 and 3 and Comparative Examples 2 and 3) FIGS. 2 and 3 are partial sectional views showing the colored products 11 and 12 of this example. First, as shown in FIG. 2, the substrate 13 of the colored product 11 is made of resin such as epoxy resin with a smooth surface, and the plating layer 14 as a metal film layer is wet chrome plated on the surface of the substrate 13. A base material 21 is formed by the substrate 13 and the plating layer 14. Further, on the plating layer 14, a thin film layer 15 made of titanium oxide (TiO2) is formed by sputtering.

Furthermore, a protective layer 16 made of transparent resin is formed on the surface of the thin film layer 15. This protective layer 16 is made of a two-component urethane paint with a thickness of about 20 μm, as in Example 1, and is heat-treated at 70° C. for 30 minutes. The colored product 11 configured as described above was designated as Sample 2, and the product in which no protective layer was formed on the surface of the thin film layer 15 was designated as Comparative Sample 2.

Next, as shown in FIG. 3, the substrate 17 of the colored product 12 is made of resin as described above.
A plating layer 18, which is also a metal film layer, is formed on the surface of the substrate 17 by wet chrome plating.
A base material 22 is formed by the plating layer 18. Further, on the plating layer 18, a thin film layer 19 made of a mixed layer of titanium oxide and aluminum oxide (TiOx/AlOx) is formed by sputtering. Furthermore, a protective layer 20 is formed on the surface of the thin film layer 19 by the same method as described above.

The colored product 12 constructed as described above was designated as Sample 3, and the product in which no protective layer was formed on the surface of the thin film layer 19 was designated as Comparative Sample 3. The hue of each of these samples varied depending on the viewing angle, giving them a beautiful appearance. Each of these samples was then subjected to a durability test in the same manner as described above. The results are shown in Table 2.

[0024]

[Table 2]

As can be seen from Table 2 above, thin film layer 1
Samples 2 and 3 in which protective layers 16 and 20 are formed on the surfaces of 5 and 19 are comparative samples 2 and 3 in which no protective layer is formed.
It can be seen that it has superior acid resistance, alkali resistance, and abrasion resistance compared to . Furthermore, there was no inferiority to Comparative Sample 1 in terms of water resistance and volatile oil resistance.

[0026] In this way, compared to conventional colored products, the aesthetic appearance including the hue is not impaired, and the product has excellent acid resistance, alkali resistance, abrasion resistance, water resistance, and volatility resistance. Demonstrates durability against oils, etc. Note that the present invention is not limited to the above-mentioned embodiments, and may be configured as follows, for example, without departing from the spirit of the invention.

(1) In Example 1, an aluminum plate was used as the base material 2, and in Examples 2 and 3, the substrate 13 was used as the base material 2.
, 17 are made of resin, but glass plates, stainless steel plates, etc. may also be used. Further, especially in the first embodiment, the type of the thin film layer 3 is not limited as long as it causes an optical path difference in the reflected light depending on the angle of the incident light. etc.

(2) In the second and third embodiments, the plated layers 14 and 18 were provided on the substrates 13 and 17, but the plated layers 14 and 18 may not be provided.

[0029]

[Effects of the Invention] The colored product of the present invention has an excellent aesthetic appearance, can give a good impression of luxury and glamor to the viewer, and has excellent abrasion resistance and chemical resistance. .

[Brief explanation of drawings]

FIG. 1 is a partial cross-sectional view showing a colored product in Example 1 of the present invention.

FIG. 2 is a partial cross-sectional view showing a colored product in Example 2.

FIG. 3 is a partial cross-sectional view showing a colored product in Example 3.

FIG. 4 is a partial cross-sectional view showing a conventional colored product.

FIG. 5 is a partial cross-sectional view showing a conventional colored product different from FIG. 4;

[Explanation of symbols]

2... Base material as opaque base material, 3, 15, 19... Thin film layer, 10, 16, 20... Protective layer, 13, 17... Substrate, 14
, 18... Plating layer as a metal film layer, 21, 22... Base material.

Claims (2)

[Claims] [Claim 1] An opaque base material (2) and the same opaque base material (
a thin film layer (3) formed on the surface of 2) that causes an optical path difference in reflected light depending on the angle of incident light incident from the outside;
A colored product comprising a protective layer (10) made of transparent resin formed on the same thin film layer (3). [Claim 2] Substrate (13, 17) or substrate (13,
17) and a base material (21, 22) consisting of a metal film layer (14, 18) formed on the same substrate (13, 17); A thin film layer (15, 19) made of partially oxidized titanium alone or a mixture of at least partially oxidized titanium and at least partially oxidized aluminum; A colored product consisting of a protective layer (16, 20) made of transparent resin formed on