JPH0811697B2 - Water gold for painting - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water gold for overpainting capable of forming a bright gold-colored or silver-colored ornament which is not damaged even when exposed to high-frequency electromagnetic waves emitted from a microwave oven.

[0002]

2. Description of the Related Art Some plates of glass such as plates and cups or tableware made of ceramics have beautiful decorations of gold or silver on their surfaces. Since this glass or ceramic tableware gives a graceful impression to people,
It is used. In forming the above decorative body,
Gold resin containing balsam sulfide is applied to the surface of glass or ceramic tableware by brush coating, spray coating, transfer paper, etc., and then baked.

[0003]

[Problems to be Solved] However, when the glass or ceramic tableware is placed in a microwave oven, sparks are generated on the surface of the decorative body due to high-frequency electromagnetic waves generated in the microwave oven. Further, the gold decorative body may be cracked or peeled off. An object of the present invention is to provide a water gold for overpainting capable of forming a bright gold-colored or silver-colored decorative body that is not damaged even when exposed to high-frequency electromagnetic waves emitted from a microwave oven.

[0004]

Means for Solving the Problems The present invention is a liquid gold for overpainting for forming a gold-colored decorative body by overpainting on glass or ceramics, and firing, which water is for overpainting. A water-based gold for decoration with a gold color, which comprises a gold-based component having the following composition and a slurry forming liquid.
That is, the composition of the gold-based component is Au (gold) 68 to 8
5% (same as wt% or less), Bi (bismuth) 5-9
%, In (indium) 2 to 9%, Si (silicon) 6
.About.9%, Ba (barium) is 2 to 5%, and the total of the golden components is 100%.

When the content of Au is less than 68%, the gold coloration is poor, and when it exceeds 85%, the decorative body is easily damaged. If the Bi content is less than 5%, the strength of the decorative body decreases, and
If it exceeds, the color of the decorative body is inferior. If In is less than 2% or exceeds 9%, the color of the decorative body is poor. S
When i is less than 6%, the decorative body is easily damaged, and when i exceeds 9%, the coloration of the decorative body is poor. When Ba is less than 2% or exceeds 5%, the color of the decorative body is poor.

As the Au component, for example, an organic bond of gold is used. The organic bond of gold includes gold resin balsam sulfide,
Alternatively, gold mercaptide or the like is used. Bi, I above
As the n, Si and Ba components, organic binders, powders or compounds of the respective components are used. It is preferable to use the resin salt of each component as the organic bond of each component. That is,
Bismuth resinate, indium resinate, silicon resinate, barium resinate.

Further, in the present invention, the water-gold for overpainting for forming the silver-colored decorative body comprises the above-mentioned gold-colored component and P
It is composed of at least one silver-based component of t (platinum) or Pd (palladium) and a slurry forming liquid, and the silver-based component is based on 100 parts of the gold-based component (weight part, the same applies hereinafter). 0.5 to 5 parts was added. As a result, it is possible to form a silver-colored decorative body exhibiting a silver-colored color. When the silver-based component is less than 0.5 parts or more than 5 parts with respect to 100 parts of the gold-based component, the color development of the decorative body is poor. As Pt and Pd, it is preferable to use an organic bond of each component. The organic bond of each component is a resin salt of each metal, that is, a platinum resin salt or a palladium resin salt.

In addition, Rh (rhodium) can be added as another component to both the gold-based decoration and the silver-based decoration. Rh is a gold-based component 100
It is preferable to add 0.1 to 2 parts per part. Thereby, the effect of increasing the film strength at 750 ° C. or higher can be obtained. This Rh is added by, for example, a rhodium resinate solution. The slurry forming liquid is a resin solution or a solvent. It is preferable to add a frit to the above described water gold for painting to increase the strength.

[0009]

FUNCTION AND EFFECT In the hydrating water for overcoating of the present invention, since the gold-based component has the above-mentioned composition, it is possible to form an ornamental body having a light-tone gold color. In particular, since the water gold for overpainting contains the Ba component, it is possible to form a gold-colored ornament having a light color tone.

Further, when the amount of Bi is large, the adhesive strength with glass or ceramics increases. Further, when the amount of Bi, In and Si is large, the non-conductivity becomes strong, but within the range of the above composition, it is possible to form a decorative body having a sufficient non-conductivity. Therefore, the ornament is not damaged even if it is exposed to the high frequency electromagnetic waves emitted by the microwave oven. Therefore, according to the present invention, it is possible to provide a water gold for painting with which it is possible to form a bright gold-colored or silver-colored ornament that is not damaged even when exposed to high-frequency electromagnetic waves emitted by a microwave oven.

[0011]

EXAMPLES Examples 1 to 13 Examples of the present invention will be described with reference to Table 1. The water-based gold for decoration with a golden color of this example is composed of a golden color component and other components, and a slurry forming liquid including a resin solution and a solvent. The water-based gold for silver-colored decoration of this example is composed of a gold-based component, a silver-based component, and a slurry forming liquid including a resin solution and a solvent. The above-described water gold for painting is painted on glass or porcelain and fired to form a gold-colored decorative body or a silver-colored decorative body. Examples 1 to 10 are gold-based decorative water gold, and Examples 11 to 13 are silver-based decorative water gold.

In preparing the water gold for painting in this example, first, balsam sulfide of gold resin, bismuth resin salt, indium resin salt, silicon resin salt, barium resin salt,
Platinum resin salt and palladium resin salt are each dissolved in turpentine oil. As a result, a gold resin sulfide balsam solution containing 25% Au, a bismuth resinate solution containing 10% Bi, an indium resinate solution containing 5% In, and a silicon resinate solution containing 20% Si. , B
Barium resinate solution containing 5% a, Pt 10%
A platinum resinate solution containing Pd and a palladium resinate solution containing 10% Pd are prepared.

Also, resin balsam and turpentine oil are used for each 6
A resin solution is prepared by mixing at a ratio of 0% and 40%.
In addition, turpentine oil is used as the solvent. Next, Table 1
Using the above solvent, the above resinate solutions or powders are mixed with the solvent so that the mixing ratio shown in FIG. The resin solution is added at 20 wt% with respect to the total weight of water gold.

As a result, water-based gold with a gold-based decoration or a silver-colored decoration as shown in Table 1 can be obtained. All of the above water gold for painting is a black liquid and is generally called water gold. The above described water gold for painting is applied to the surface of glass or ceramics using a brush, spray or transfer paper, and baked at about 500 to 850 ° C. As a result, a decorative body is formed on the surface of the glass.

Next, the function and effect of this example will be described.
Since the gold-based component has the composition as shown in Table 1 in the hydrating water for overpainting of this example, it is possible to form a gold or silver-colored ornament having a light color tone. In particular, since it contains the Ba component, it is possible to form a gold-colored ornament having a light color tone.

Further, the water-gold of the present example is brushed on a glass or ceramic cup and baked as described above.
A continuity test was conducted on the above decorative body using a current tester. As a result, there was no electrical continuity. Also, the glass or ceramic cup having the above-mentioned decorative body was put in a microwave oven for testing. As a result, the decorative body did not generate a spark, nor did it crack or peel even when exposed to high-frequency electromagnetic waves emitted by a microwave oven. In addition, the color tone of the ornament remained unchanged and remained bright gold or silver.

Next, the characteristics of the decorative body of this example were evaluated.
As shown in Table 2, the evaluation was performed for damage, chemical durability, abrasion strength, and color developability. Chemical durability is
A comprehensive evaluation was made from the evaluation scores of acid, alkali, detergent and hot water shown in Table 3. The results are shown in the table. It has been confirmed by a current tester that each of the above-mentioned ornaments is non-conductive.

The measurement method for the above characteristic evaluation will be described below.
explain. Regarding damage, first, glass or ceramics with the above-mentioned decorations formed on the edge and center of the microwave oven,
It was placed at angles of 1 °, 3 ° and 5 °. This angle was changed to the angle of the bottom surface of the glass or ceramic with respect to the bottom surface of the microwave oven in order to prevent the blind spot of the microwave. Next, at output of 500W, high frequency electromagnetic wave (1240MHz)
Was irradiated for 1 minute, and then the presence or absence of damage to the glass or ceramic ornament was visually determined. The case where there was no damage was regarded as pass (OK), and the case where there was damage was regarded as fail (NG).

Regarding the chemical durability, that is, the resistance to acids, alkalis, detergents, and hot water, under the conditions shown in Table 3, each of the chemicals and the glass or ceramic cup having a decorative body formed in the hot water were After the immersion, the presence or absence of damage to the decorative body was visually judged and scored. That is, the case where there is no damage to the decorative body is 0, the case where 12.5% is damaged is 0.5, the case where 25% is damaged is 1, the case where 50% is damaged is 2, and the case where 75% is damaged. It was judged to be 3 and 4 when all were damaged. Then, the case where all the evaluation scores for this damage were less than or equal to the judgment reference points shown in Table 3 were regarded as pass (OK). On the other hand, if even one item of each evaluation score exceeds the judgment reference point, it is regarded as a failure (NG).

Regarding the abrasion strength, a rubber grindstone (# 250, hardness 75 °, load 500 g,
The decorative body was polished at a rotation speed of 55 rpm). In the judgment, the case where no damage was observed even after polishing 100 times or more was regarded as a pass, and the case where the damage was caused by polishing less than 100 times was regarded as a failure. The color development of the decorative body was measured using a color difference meter (OFC-31 type manufactured by Nippon Denshoku Industries Co., Ltd.). 1.0 va
The case of lue or more was regarded as pass, and the case of less than it was regarded as fail.

As is known from Table 2, the decorative body of this example passed all the characteristic evaluations. Moreover, all the decorative bodies exhibited excellent color development of 1.3 value or more. As is also known from this, the water gold for overpainting of this example was not damaged even when exposed to high frequency electromagnetic waves emitted by a microwave oven, and was excellent in chemical durability, abrasion resistance, and color development. , It is possible to form gold-based and silver-based ornaments.

Also, for comparison, using water gold for overpainting (C1 to C8) consisting of the components shown in Table 4, the surface of the glass or ceramic cup is gold-colored as in the water hydration for overpainting of this example. A silver-based or silver-colored decorative body was formed and its characteristics were evaluated in the same manner as this example. The results are shown in Table 5. As known from Table 5, any one of the decorative bodies according to the comparative examples is
Failed on one or more characterizations.

[0023]

[Table 1]

[0024]

[Table 2]

[0025]

[Table 3]

[0026]

[Table 4]

[0027]

[Table 5]

Claims (2)

[Claims] 1. A liquid gold for overpainting for forming a gold-colored decorative body by overpainting on glass or ceramics and firing, wherein the water-gold for overpainting is a gold-colored system of the following composition: A gold-colored decorative water gold for decoration, which comprises a component and a slurry forming liquid. Au 68-85wt% Bi 5-9wt% In 2-9wt% Si 6-9wt% Ba 2-5wt% 2. A liquid water gold for overpainting for forming a silver-colored decorative body by overpainting on glass or ceramics and firing, wherein the water gold for overpainting is the following golden-colored component: And one or more silver-based components of Pt and Pd and a slurry forming liquid. The silver-based component is added in an amount of 0.5 to 5 parts by weight based on 100 parts by weight of the gold-based component. Water gold for painting with a silvery decorative feature. Au 68-85wt% Bi 5-9wt% In 2-9wt% Si 6-9wt% Ba 2-5wt%