JPH06272178A - Metallic luster thermochromic fabric and clothing using the same - Google Patents

Abstract

(57) [Summary] [Purpose] The surface of the fabric is constructed so as to show a unique appearance due to temperature changes, to differentiate products and diversify the appearance, and to enhance the commercialability of clothing using this. [Structure] A thermochromic layer is provided on at least a part of the surface of the cloth, and a metallic luster pigment having a particle size of 5 to 100 μm in which the surface of natural mica is coated with titanium oxide is fixed in a binder in a dispersed state. The metallic luster pigment layer for adjusting the wavelength of the reflected light is laminated. [Effect] By laminating the metallic luster pigment layer on the thermochromic layer, various thermochromic metallic luster colors can be visually recognized and the light resistance of the thermochromic layer can be remarkably improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metallic luster thermochromic fabric and a garment using the same. More specifically, the present invention relates to a cloth which exhibits a color change such as a gold color, a silver color, and a metallic color due to a temperature change, and which has light resistance for sustaining the thermochromic property, and clothing using the same.

[0002]

2. Description of the Related Art Conventionally, thermochromic materials exhibiting reversible color change of colored ← → colorless and colored [1] ← → colored [2] due to temperature change have been disclosed in JP-B-51-35414 and JP-B-51-41. No. 44706, etc., a thermochromic fabric provided with a thermochromic layer by coating a coating composition containing this type of thermochromic material is disclosed in JP-A-61-1.
It is disclosed in Japanese Patent No. 79371. An attempt to diversify color changes is disclosed in Japanese Utility Model Publication No. 3-14400. The temperature indicator described in the above publication is intended to cover a thermosensitive liquid crystal with a pearlescent layer to develop a pearlescent color change.

[0003]

By the way, the material colored by the thermochromic material can exhibit a sharp color change, but it is not suitable for clothing for sports etc. because it does not satisfy the light resistance. Met. Also, in the latter thermometer, the liquid crystal is essentially colorless and reflects a specific wavelength that is selective scattering of visible light, so that a blackish opaque layer is necessary on the back surface, and therefore its color change is Since it looks black-red-yellow-green-blue-purple-black, even if a pearlescent pigment layer is provided thereon, the color change is not clear. For example, when a pearlescent pigment is used, the color change is as follows: gold-golden red-golden yellow-golden green-
Gold-tinted blue-golden-purple-golden, showing no change to a clear non-golden color. Further, it is not possible to develop a color change from a pearlescent color to a colorless color, and it is impossible to hide or reveal the base. Gold, silver, and other metallic luster metallic colors are luxurious colors,
The change from silver or metallic metallic luster to other colors attracted the most attention of the viewers, and there were great demands from various fields, but nothing satisfying the practical use has been disclosed yet.
The present inventors have completed the present invention by conducting research to effectively exhibit the color-changing effect of a thermochromic material and to change the color from a metallic luster color such as gold color in a clear and colorful manner. The thermochromic material used in the present invention, unlike liquid crystal, has a distinct color change in the thermochromic material itself, so that it is not necessary to provide a blackish opaque layer in the lower layer, and there is a feature that it can be colored-colorless discoloration. .

Therefore, by laminating a specific metallic luster pigment layer of gold, silver or other metallic color on the colored-colorless thermochromic layer of the thermochromic material, the metallic luster color is changed to a colorless color. It has been found that the changes are effectively expressed. This makes it possible to visualize a color change from a metallic luster color to white by providing a colored-colorless thermochromic layer on a white support and laminating a metallic luster pigment layer on the thermochromic layer. . It is also possible to make the viewer visually recognize a clear color change from a metallic luster color of gold, silver, and other metallic colors to a color by mixing a non-thermochromic colorant. Further, it is also possible to employ a structure in which the lower colored layer is made to be concealed with a metallic luster color. This kind of color change and hiding cannot be exhibited in the liquid crystal system. Furthermore, by using a thermochromic material having a very large hysteresis width as a thermochromic material, that is, a coloring material containing a so-called color-memory thermosensitive dye, the state changed even after the heat or cold heat required for thermochromic is removed. It can be held and also has the effect of making the state visible in the normal temperature range. In this way, a thermochromic laminated structure that clearly expresses the color change due to heat of various metallic luster colors is formed on the fabric, and the light resistance, which is the weak point of the conventional thermochromic fabric, is conspicuous together with the metallic luster color change effect. It is intended to provide an improved thermochromic fabric and clothing using the same.

[0005]

SUMMARY OF THE INVENTION The present invention provides a fabric surface,
Provided is a thermochromic layer in which a thermochromic material consisting of an electron-donating color-changing organic compound, an electron-accepting compound, and an organic compound medium that reversibly causes a color reaction between the two is fixed in a binder in a dispersed state. In addition, the particle size of natural mica coated with titanium oxide on the thermochromic layer is 5-100.
A metallic luster thermochromic fabric in which a metallic luster pigment having a thickness of μm is fixed in a binder in a dispersed state and a metallic luster pigment layer for adjusting the wavelength of reflected light is laminated, and clothing using the same are required. Furthermore, the thermochromic layer is made of a thermochromic material having a lightness value of 6 or less in a colored state and a colorless lightness value of 8 or more in a decolored state, and the thermochromic layer is It is a thermochromic material in which a non-thermochromic colored dye or pigment is blended, and the lightness value (V1) of the color density of the mixed system at the time of color development is 6 or less, and the lightness value of the mixed system at the time of erasing ( V
2) is 4 or more and (V2)-(V1)> 1, and further, the metallic luster pigment has a surface area of natural mica of 41-41.
The coating layer coated with 44% by weight of titanium oxide has an optical thickness of 180 to 240 nm, the particle size of 5 to 60 μm is a golden metallic luster pigment, and the surface of natural mica is coated with 30 to 48% by weight of titanium oxide. An optical thickness of the coating layer of 140 to 240 n, the upper layer of which is coated with 4 to 10% by weight of iron oxide.
m, the particle size of 5 to 60 μm, the surface of a golden metallic luster pigment or natural mica is coated with 30 to 48% by weight of titanium oxide, and the upper layer thereof is coated with 0.5 to 10% by weight of a non-thermochromic colored dye or pigment. , A dichroic golden metallic luster pigment having an optical thickness of 140 to 240 nm of the coating layer, and 16 to 39% by weight on the surface of natural mica.
The optical thickness of the coating layer coated with titanium oxide is 110 to
170 nm, the silver metallic luster pigment having a particle size of 5 to 100 μm, the optical thickness of the coating layer in which the surface of natural mica is coated with 45 to 58% by weight of titanium oxide is 245 to 415 nm.
And the optical properties of a coating layer in which the surface of a metallic color metallic luster pigment having a particle size of 5 to 60 μm and natural mica is coated with 45 to 58% by weight of titanium oxide, and then coated with 4 to 10% by weight of iron oxide. With a metallic thickness of 245 to 415 nm and a particle size of 5 to 60 μm, the surface of natural mica is coated with 45 to 58% by weight of titanium oxide, and 0.5 to 10% by weight of non-coated metal oxide. It is required that the coating layer coated with the thermochromic colored dye and pigment has an optical thickness of 245 to 415 nm and a metallic color metallic luster pigment having a particle size of 5 to 60 μm. Further, it is a requirement that the clothing comprises at least a part of the metallic luster thermochromic fabric. In the above structure, knitted fabric, woven fabric, non-woven fabric, fibrous fabric such as lace fabric, artificial leather, etc. are all effective as the fabric. In addition, clothing includes gloves, hats, socks, mufflers, and the like, and of course, clothing for sports, leisure, etc., as well as clothing for general use, all of which are called clothing in the world are effective. In the case of clothing, the above-mentioned metallic luster thermochromic layer-forming fabric constitutes the whole of the clothing, the clothing portion is formed, and the thermochromic layer of the above-mentioned metal is formed in the clothing portion. It may have a laminated portion of the luster pigment layer. Further, it is also effective to attach a small piece of the above-mentioned thermochromic cloth to the negative part of the garment by an appropriate means such as pasting or sewing. Further, a desired transfer image may be formed in a proper place by transfer printing.

The optical thickness of the coating layer of the present invention means the refractive index ×
Geometrical thickness, which is associated with reflecting light of a certain wavelength, in other words
A particular optical thickness reflects light of a particular wavelength. For example, the optical thickness of the coating layer formed on the surface of natural mica 18
The 0 to 240 nm titanium oxide layer reflects yellow light of 550 to 600 nm. For the thermochromic layer, a thermochromic material containing three components of an organic compound medium that reversibly causes a color reaction with an electron-donating color-changing organic compound and an electron-accepting compound is used. When a layer containing a non-thermochromic dye / pigment colorant is used as the thermochromic layer, a reversible change from a golden metallic luster color to a colored color is visually observed when the metallic luster pigment is used. . Since the metallic luster pigment layer is transparent, when the non-color-changing color layer is arranged as the lower layer, the color of this color layer can be visualized at the same time as the heat color change of the heat color-changing layer.
When the non-thermochromic coloring layer is arranged as the lowermost layer, the lower non-color-changing colored layer, such as letters and patterns, is also hidden in the colored state of the thermochromic layer. By the effect, the hiding effect is enhanced compared to the hiding effect of only thermal discoloration,
Further, it contributes to the improvement of the light resistance of the thermochromic layer. The thermochromic material is most preferably used by being encapsulated in microcapsules. This is because the thermochromic materials can be kept in the same composition under the various use conditions and can exhibit the same effect.

The cloth of the present invention is a laminate in which a thermochromic material and a metallic luster pigment are fixed by a transparent resin binder. Examples of the transparent binder include other resins such as conventionally known fiber processing resins and ultraviolet curable resins. A system using the golden metallic luster pigment will be described. When the pigment is within the above-mentioned limited number range, light having a purple wavelength is selectively transmitted, and light having a complementary wavelength of yellow wavelength is reflected to give a golden color. If it is out of the above range, the wavelength selectivity is lost, or even if the wavelength selectivity is present, it does not become golden. In addition, in the case of a golden metallic luster pigment in which the surface of natural mica particles is coated with titanium oxide and the upper layer of which is coated with iron oxide, in addition to the wavelength-selective reflection and transmission functions, iron oxide itself has a violet light. By adding the characteristic of absorbing and reflecting yellow light,
Visualize the reversible color change from brighter gold to pale yellow. Since the color of iron oxide itself gives it a pale yellow color, the coating layer looks pale yellow even if the base is white. If the titanium oxide coating rate is less than 30% by weight, it is difficult to obtain a sufficient golden color. Therefore, in order to obtain a golden color, it is necessary to coat iron oxide in an amount of more than 10% by weight. Even if the color changes, the metallic luster layer always exhibits a golden color and a clear color change cannot be obtained. Further, when the coverage of titanium oxide exceeds 48% by weight, the color of light that is selectively reflected is not yellow, so that coating with iron oxide thereafter does not give a beautiful golden color. When the iron oxide coverage is less than 4% by weight, the above-mentioned effects of iron oxide do not sufficiently appear, and 10% by weight
When it exceeds, the metallic luster layer is always golden even if the thermochromic material is discolored, and a clear color change cannot be obtained.

When iron oxide is used in combination, forming an iron oxide film on the titanium oxide coating is most effective for developing a golden metallic luster color. When titanium oxide is coated on iron oxide, the effect of titanium oxide is large and the effect of iron oxide is small. When titanium oxide and iron oxide are mixed, iron oxide may be in the upper layer, and titanium oxide may block the reflected light of iron oxide, so that the reflection efficiency of iron oxide deteriorates. When an iron oxide film is provided on the titanium oxide film, the iron oxide layer has the property of absorbing purple light and reflecting other light, and this light appears to be yellow, so the titanium oxide layer has a metallic luster. It has the effect of adding depth. This is because the iron oxide film layer as the upper layer prevents the reflected light from this iron oxide layer from being blocked by other layers and reflected. In addition, in the case of a golden metallic luster pigment in which the surface of natural mica particles is coated with titanium oxide and the upper layer of which is coated with a non-thermochromic colored dye / pigment, there are various types depending on the color of the nonthermochromic dye / pigment to be coated. A variety of color changes can be expressed, and for example, reversible color changes of gold ← → colored such as gold ← → pink can be visualized by combining with a black ← → white thermochromic layer. When the coverage of titanium oxide exceeds 48% by weight, the color of light that is selectively reflected is not yellow, so that gold is not obtained.
If the coverage of the non-thermochromic colored dye / pigment is less than 0.5% by weight, a sufficient color density cannot be obtained. If it exceeds 10% by weight, the color density of the color is too high and the gold color cannot be expressed. When each of the pigments is within the above range, it is possible to impart a property of selectively transmitting a wavelength of gold color and reflecting light of a wavelength having a complementary color relationship.

The system of the silver metallic luster pigment will be described. The silver metallic luster color pigment is applied on the surface of the natural mica particles 16 ~
A coating layer coated with 39% by weight of titanium oxide has an optical thickness of 110 to 170 nm and a particle size of 5 to 100 μm, and the wavelength selectivity of reflected light is prevented by being within the above-mentioned number limited range. You can When the amount is out of the above range, the wavelength of reflected light becomes selective, and coloring is not silvery. The titanium oxide layer having the optical characteristics is 380 to 700 n
The light of all wavelengths of m is reflected by the layered array of mica without being diffusely reflected, so that it looks silvery. When a layer containing a non-thermochromic dye / pigment colorant is used as the thermochromic layer, a reversible change from a silver metallic luster color to a colored color is visually recognized. Since the silver metallic luster pigment layer is transparent, the color of the color-changing layer can be visualized at the same time as the heat-color-changing of the thermochromic layer by disposing the non-color-changing colored layer as the lowermost layer. In the colored state of the thermochromic layer, the underlying non-color-changing colored layer, such as letters and patterns, is also hidden, but at this time, the light-reflecting effect of the silver metallic luster pigment layer makes the concealing effect more than the concealing effect of only the thermochromic layer. And suppress photodegradation of the thermochromic layer.

The metallic luster pigment system used in the present invention will be described. The pigment is a pigment having a metallic color in which the surface of natural mica particles is coated with titanium oxide. Further, a pigment having a titanium oxide layer coated with iron oxide is also used. Further, a dichroic metallic luster pigment in which a titanium oxide coating is coated with a non-thermochromic colored dye / pigment is also used. More specifically, the metallic metallic luster pigment will be described. The metallic metallic luster pigment has a surface of natural mica coated with 45 to 58% by weight of titanium oxide, an optical thickness of the coating layer of 245 to 415 nm, and a particle size of 5-60 nm, the surface of natural mica is coated with 45-58% by weight of titanium oxide, and 4-10% by weight of iron oxide is coated on the surface of the coating layer having an optical thickness of 245-415 nm and a particle size. 5-60
nm ones are also used. 45 ~ the surface of the natural mica particles
Coated with 58% by weight of titanium oxide, the upper layer of which is 0.5-
It was coated with 10% by weight of non-thermochromic colored dyes and pigments. A dichroic metallic color metallic luster pigment having an optical thickness of the coating layer of 245 to 415 nm and a particle size of 5 to 60 nm can also be used. Mica coated with titanium oxide splits visible light rays of red to purple into light rays of respective colors by reflecting the weight of titanium oxide and the optical thickness of the coating, and reflects only light of a specific wavelength, and It has a function of transmitting light. On the other hand, mica does not diffusely reflect light but reflects in parallel lines, so the light has a metallic luster. The light transmitted through the first layer is absorbed by the thermochromic layer of the second layer.
In this way, the light of the metallic luster of a specific wavelength is reflected, so that a metallic color of a specific color is obtained. Furthermore, in the metallic color metallic luster pigment in which the surface of the natural mica particles is coated with titanium oxide and the upper layer thereof is coated with iron oxide, in addition to the above wavelength-selective reflection and transmission effects, the iron oxide itself has a purple light. The reversible color change from metallic color to pale yellow is visualized by adding the property of absorbing light and reflecting yellow light.

Even if the coverage of titanium oxide exceeds 58% by weight, the wavelength selectivity is deteriorated, and a metallic color is not obtained.
When the iron oxide coverage is less than 4% by weight, the effect of iron oxide shown above does not sufficiently appear, and when it exceeds 10% by weight,
A metallic color is obtained, but iron oxide is too strongly colored and a color change from a beautiful metallic color cannot be obtained. When iron oxide is also used, it is most effective to form an iron oxide film on the titanium oxide coating in order to develop a color change from metallic metallic luster color to pale yellow. When titanium oxide is coated on iron oxide, the effect of iron oxide is small because the reflection efficiency of titanium oxide is high. When titanium oxide and iron oxide are mixed, iron oxide may block the reflected light as compared with iron oxide in the upper layer, so that the reflection efficiency of iron oxide deteriorates. When an iron oxide film is provided on the titanium oxide film, the iron oxide layer absorbs purple light,
It has a property of reflecting other light, and since this light looks yellow, it has an effect of giving a metallic color having a metallic luster due to the titanium oxide layer. This is because the iron oxide film as the upper layer prevents the reflected light from this iron oxide layer from being blocked or reflected by other layers. Further, the surface of the natural mica particles coated with titanium oxide, in the metallic color metallic luster pigment coated with a non-thermochromic colored dye / pigment in the upper layer, the color of the non-thermochromic colored dye / pigment to be coated, Furthermore, it is possible to express a wide variety of color changes. For example, in combination with a black ← → white thermochromic layer, a metallic color ← →
Pink, metallic color ← → metallic color such as blue ←
→ You can visualize the reversible color change of the color. When the coverage of titanium oxide is less than 45% by weight, it is difficult to obtain a metallic color with sufficient color. Therefore, when the non-thermochromic colored dye / pigment is coated, it does not look metallic. On the other hand, when the iron oxide coverage exceeds 58% by weight, the wavelength selectivity is deteriorated, and a sufficient metallic color cannot be obtained.

When the coverage of the non-thermochromic colored dye / pigment is less than 0.5% by weight, a sufficient color density of color cannot be obtained. 1
If it exceeds 0% by weight, the color density of the color is too high, and the contrast between the metallic color and the color is reduced. When each of the pigments is within the above range, it is possible to impart the characteristic of selectively transmitting the light of the wavelength of the metallic color and reflecting the light of the wavelength having the complementary color relationship. If the ratio is out of the above range, the wavelength selectivity is lost, or the wavelength selectivity is present but the metallic color is not obtained. Further, when a layer containing a non-discoloring dye / pigment colorant is used as the thermochromic layer, a reversible color change from metallic metallic luster color to colorant color is visually recognized. Since the metallic luster pigment layer of metallic color is transparent, when the non-color-changing colored layer is arranged in the lower layer, the color of this color layer is changed to the thermochromic layer in the colored state, and the non-color-changing colored layer of the lower layer, for example, letters, designs, However, at this time, the light-reflecting effect of the metallic luster pigment layer of metallic color enhances the hiding effect as compared with the hiding effect of only thermochromism, and further suppresses photodegradation of the thermochromic layer.

For the thermochromic layer, a thermochromic material containing an electron-donating color-developing organic compound, an electron-accepting compound, and an organic compound medium that reversibly causes a color reaction is used. Specifically, for example, the above-mentioned Japanese Patent Publication No. 51-35414,
JP-B-51-44706, JP-B-1-17154
Thermochromic materials described in Japanese Patent Publication No. 1993, ie, (1) (a) electron-donating color-developing organic compound, (b) a compound having a phenolic hydroxyl group, and (c) a polar substituent group. A reversible thermochromic material containing three essential chain-type aliphatic monohydric alcohols as essential components. Alternatively, (2) (a) an electron-donating color-forming organic compound, (b) a compound having a phenolic hydroxyl group, and (c) an aliphatic monohydric alcohol having no polar substituent and a polar substituent. A reversible thermochromic material containing, as an essential component, three components of a compound selected from an ester having no polar substituent obtained from an aliphatic monocarboxylic acid. Alternatively, (3) (a) an electron-donating color-developing organic compound, (b) a compound having a phenolic hydroxyl group, (c) a higher aliphatic monohydric alcohol having no polar substituent, and a polar substituent Three components of a compound selected from any one of an aliphatic monocarboxylic acid having no substituent and an ester having no polar substituent obtained from a chain type aliphatic monohydric alcohol having no polar substituent are essential components. And a reversible thermochromic material containing this in microcapsules. Alternatively, (4) (a) an electron-donating color-developing organic compound, (b) a compound having a phenolic hydroxyl group, (c) a higher aliphatic monohydric alcohol having no polar substituent, and a polar substituent As an essential component, three components of a compound selected from an ester having no polar substituent obtained from an aliphatic monocarboxylic acid having no and a chain aliphatic monohydric alcohol having no polar substituent, A thermochromic material obtained by dissolving or dispersing this in a vehicle. Etc.

In addition to this, Japanese Patent Publication No. 4-1 proposed by the present applicant
No. 7154, a thermochromic material containing a color-memory thermosensitive color-changing dye that exhibits a large hysteresis characteristic, that is, the shape of a curve plotted in which the change in the coloring density due to temperature changes is plotted. It is a type of color change material that changes color when it goes down from a temperature lower than the temperature range and when it goes down from a temperature higher than the color change temperature. A thermochromic material is also used which has a characteristic of being capable of storing and retaining a state of being changed at a temperature below the low temperature side color changing point or above the high temperature side color changing point in a normal temperature range between the color changing points. Further, as described in Japanese Patent Publication No. 1-29398 proposed by the present applicant, the color density-temperature curve due to temperature change is 3 ° C.
A highly sensitive thermochromic material having the following hysteresis width is also effective. The thermochromic material described above can be usually applied by encapsulating it in microcapsules, but it is also effective if it is applied as it is without encapsulating it in microcapsules. The thermochromic material is dispersed in a medium containing a binder which is a film-forming material and applied as a coloring material such as ink or paint to form a thermochromic layer in the form of a coating layer or a coating film.

The thermochromic material in the above is 0.5 to 0.5 in the film forming resin, the thermoplastic resin or the thermosetting resin.
The content may be 40% by weight, preferably 1 to 30% by weight. A blending amount of less than 0.5% by weight makes it difficult to visually perceive a clear thermochromic effect, and a blending amount of more than 40% by weight results in an excessive amount and a residual color in a decolored state. The metallic luster pigment layer can be dispersed in a medium containing a binder and in the form of a paint to form a coating layer.
Further, the thermochromic layer or the metallic luster pigment layer, or the laminated body of the thermochromic layer and the metallic luster pigment layer can also be formed by means of conventionally known transfer printing.

Next, the binder is exemplified below. Ionomer resin, isobutylene-maleic anhydride resin copolymer resin, acrylonitrile-acrylic styrene copolymer resin, acrylonitrile-styrene copolymer resin, acrylonitrile-butadiene-styrene copolymer resin, acrylonitrile chlorinated polyethylene-styrene copolymer resin,
Ethylene-vinyl chloride copolymer resin, ethylene-vinyl acetate copolymer resin, ethylene-vinyl acetate-vinyl chloride graft copolymer resin, vinylidene chloride resin, vinyl chloride resin, chlorinated vinyl chloride resin, vinyl chloride-vinylidene chloride copolymer resin , Chlorinated polyethylene resin, chlorinated polypropylene resin, polyamide resin, high density polyethylene resin, medium density polyethylene resin, linear low density polyethylene resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polycarbonate resin, polystyrene resin, high impact polystyrene resin, Polypropylene resin, polymethylstyrene resin, polyacrylic acid ester resin, polymethylmethacrylate resin, epoxy acrylate resin, alkylphenol resin, rosin-modified phenol resin , Rosin modified alkyd resin, phenolic resin modified alkyd resin, epoxy resin modified alkyd resin, styrene modified alkyd resin, acrylic modified alkyd resin, amino alkyd resin, vinyl chloride-vinyl acetate resin, styrene-butadiene resin, epoxy resin, unsaturated polyester Resin, polyurethane resin, vinyl acetate emulsion resin, styrene-butadiene emulsion resin, acrylic ester emulsion resin, water-soluble alkyd resin, water-soluble melamine resin, water-soluble urea resin, water-soluble phenol resin, water-soluble epoxy resin, Examples thereof include water-soluble polybutadiene resin, cellulose acetate, nitrate cellulose, ethyl cellulose and the like.

Among the above-mentioned binders, the binder for forming a coating layer is the above-mentioned alkylphenol resin, rosin-modified phenol resin, rosin-modified alkyd resin, styrene-modified alkyd resin, acrylic-modified alkyd resin, aminoalkyd resin, vinyl chloride- Vinyl acetate resin, styrene-butadiene resin, epoxy resin, acrylic ester resin, unsaturated polyester resin, polyurethane resin, vinyl acetate emulsion resin, styrene-butadiene emulsion resin, acrylic ester emulsion resin, water-soluble alkyd resin, Resins such as water-soluble melamine resin, water-soluble urea resin, water-soluble phenol resin, water-soluble epoxy resin, water-soluble polybutadiene resin, and cellulose derivative, which are dissolved or dispersed in water or organic solvent. It can be applied.

The thermochromic layer and the metallic luster pigment layer are conventionally known methods, for example, screen printing, offset printing, gravure printing, coater, tampo printing, printing means such as transfer, brush coating, spray coating, electrostatic coating. , Electrodeposition coating, flow coating, roller coating, dip coating and the like. A light stabilizer layer can be appropriately provided between the above-mentioned metallic luster pigment layer or between the metallic luster pigment layer and the thermochromic layer. Specifically, the light stabilizer layer is selected from an ultraviolet absorber, an antioxidant, an antioxidant, a singlet oxygen quencher, a superoxide anion quencher, an ozone quencher, a visible light absorber, and an infrared absorber. It is a layer in which a light stabilizer is fixed in a dispersed state, and can be formed according to the preparation of the thermochromic layer or the metallic luster pigment layer described above. An appropriate amount of non-thermochromic colored dyes and pigments may be mixed in the above-mentioned thermochromic layer to provide various color changes of the thermochromic layer. In addition, images such as characters and patterns may be arranged below the thermochromic layer to hide these images.

[0019]

The fabric of the present invention has a structure in which a metallic luster pigment layer of gold, silver or metallic color is laminated on the thermochromic layer formed on the surface of the fabric, and the color change of the thermochromic layer is transmitted through the metallic luster pigment layer. Then, it makes the viewer see. Here, the properties of the metallic luster pigment, that is, the coating weight% of titanium oxide on the surface of the natural mica particles, the iris effect caused by the selective interference action of the wavelength of visible light due to the optical thickness, the transmission effect and the thermochromic layer The multi-colored change of metallic luster is made visible by the synergistic effect of the reflection and absorption effect of visible light of the lightness value. Specifically, the mica has the effect of changing the wavelength of the reflected light at the time of interference by adjusting the coating amount of the coated titanium oxide, that is, the thickness of the coating layer. For example, the optical thickness of the coating layer is 180 to 24 so that the yellow light is selectively reflected and the purple light is transmitted.
In the titanium oxide mica adjusted to 0 nm, when the base is black, the violet light that is transmitted is absorbed by the black base,
Since only yellow light of 600 nm is reflected, it has a gold color. On the other hand, when the base is white, the transmitted purple light is also reflected in the white white, and not only the yellow light but also the purple light is reflected,
It is visible as white because it reflects all wavelengths of visible light. Therefore, by reversibly changing the lower thermochromic layer to black ← → white, the reversible color change of gold ← → white is visualized. If the optical thickness is outside the above range,
The reflected light is not light with a wavelength of 550 to 600 nm and does not become golden.

In the system in which the silver color metallic luster pigment layer is laminated on the thermochromic layer, the color change of the thermochromic layer is made visible to the viewer through the silver metallic luster pigment layer. As mentioned above, when all visible light is reflected, it appears white. in this case,
When part of the light of all wavelengths of the incident light is absorbed and the rest is reflected, it becomes dark and becomes gray. Since the mica is arranged in layers, the reflected light is not diffusely reflected but reflected in the same direction. Such reflected light has a metallic luster. Therefore, the metallic luster gray turns silver. In this way, the metallic luster of the silver surface is visible. Here, titanium oxide has an optical thickness of 110-110.
It must meet the 170 nm requirement. If the optical thickness is out of the above range, wavelength selectivity of reflected light is generated, and coloring occurs and silver color is not obtained.

Even in a system in which a metallic color metallic luster pigment layer is laminated on the thermochromic layer, the color change of the thermochromic layer is visualized through the metallic color metallic luster pigment layer as described above. As mentioned above, mica coated with titanium oxide splits red to violet visible light into light beams of each color and reflects only light of a specific wavelength depending on the coating weight of titanium oxide and the optical thickness of the coating. However, it has the effect of transmitting other light.
On the other hand, mica does not diffusely reflect light but reflects it in parallel rays, so the light has a metallic luster. For example, titanium oxide coating weight%
Of 55 to 58% and an optical thickness of 375 to 415 nm transmits red light of 630 to 700 nm, and
It reflects green light of 540 nm and becomes a greenish metallic color. Similarly, the coating weight% of titanium oxide is 51 to 54%
And a pigment having an optical thickness of 315 to 350 nm is 580 to 6
It transmits orange light of 30 nm and becomes a bluish metallic color of 430 to 500 nm. As described above, according to the present invention, the coating amount of the specific titanium oxide and the optical thickness reflect light of a specific wavelength, and the interference effect of mica and the colored-colorless discoloration effect of the thermochromic material cause a gold color, a silver color. , Other metallic colors are made visible.

Next, the function of the metallic luster pigment layer for improving the light resistance of the thermochromic layer will be described. As described above, the metallic luster pigment layer in the present invention has both a light absorbing (or light reflecting) function and a light transmitting function, and contains at least a part of ultraviolet rays or visible rays which adversely affects the function deterioration of the thermochromic layer. It will be absorbed or reflected, and will function to dramatically improve the light resistance of the thermochromic layer, and can also transmit an appropriate amount of the above-mentioned visible light that does not interfere with the visual sense. The color change can also be effectively visualized. This point will be further described. For example, near-ultraviolet light and blue visible light (which has the shortest visible wavelength among the visible light and the energy of which is the lowest in the visible light, which seems to have a great influence on the photodecomposition of the electron-donating color-forming organic compound which develops a blue color in the thermochromic pigment. High). In the metallic luster pigment itself,
It has a property of cutting off ultraviolet rays to some extent, and further has a property of selectively reflecting blue light and transmitting yellow light.
The thermochromic characteristics show that when the thermochromic pigment is blue, the electron-donating organic compound absorbs yellow light and reflects blue light. It looks metallic blue in combination with the reflection of. Next, when the thermochromic pigment changes to colorless, the electron-donating color-developing organic compound reflects all visible light, so that the yellow light transmitted through the metallic luster pigment layer is also reflected by the thermochromic pigment layer. As a result, all wavelengths are reflected and appear colorless. Therefore,
The change of blue ← → colorless is retained. The above phenomenon is a phenomenon that cannot be achieved in a system using a conventional coloring filter,
It also functions to improve the light resistance by cutting off the visible light part and making the decolored state colorless.

Next, the metallic luster tone thermochromic fabric of the present invention will be specifically described. The fabric of the present invention is a thermochromic layer formed by laminating a metallic luster pigment layer on a thermochromic layer formed on the fabric (A), wherein the thermochromic layer is a thermochromic material mixed with a non-chromic dyeing pigment. Each mode of laminating a metallic luster pigment layer on the thermochromic layer (B), forming a non-discoloring colored layer on the fabric, and laminating a metallic luster pigment layer on the non-discoloring colored layer (C) is included. Here, a transparent protective layer may be laminated on the upper side of the metallic luster pigment layer, or
A clear coat layer or a laminate layer may be interposed between the thermochromic layer and the metallic luster pigment layer. Next, from (A) to
The fabric of the present invention will be described based on (C). In the aspect (A), the metallic luster pigment layer has a particle size of about 5 to 100 μm.
m is a layer in which the metallic luster pigment of m is fixed to a transparent resin in a dispersed state, and the thermochromic layer is an organic compound that reversibly causes a color reaction between the electron-donating color-forming organic compound and the electron-accepting compound. It is composed of a thermochromic material (hereinafter referred to as thermochromic material) consisting of a three-component homogeneous compatible solution of a compound medium, and the lightness value of the color density in the dispersed state fixed by the transparent film forming material is 6 Hereinafter, a layer having a colorless lightness value of 8 or more in the decolored state exhibits a reversible color change from metallic gloss color to colorless and colorless to metallic gloss color. When the lightness value of the color density in the color-developed state is 6 or less, it has the ability to sufficiently absorb the light transmitted through the upper metallic luster pigment. For example, in the case of a golden metallic luster pigment, a clear golden metallic luster pigment is used. Looks like. However, when the lightness value in the color-developed state exceeds 6, the light transmitted through the golden metallic luster pigment cannot be sufficiently absorbed and a part of the light is reflected, so that the metallic luster color cannot be clearly seen. On the other hand, when the colorless lightness value in the decolored state is 8 or more, the light transmitted through the golden metallic luster pigment is sufficiently reflected, so that the yellow light reflected by the golden metallic luster pigment layer and the thermochromic layer are reflected. You will see both of these lights together, so they will not appear golden. In the embodiment of (B),
The metallic luster pigment layer is a layer in which a metallic luster pigment having a thickness of about 5 to 100 μm is fixed with a transparent resin, and the thermochromic layer is a mixture of the thermochromic material and a dye or pigment which is a non-color-changing colorant. The lightness value (V1) of the color density in the colored state is 6 or less, the lightness value (V2) of the colored state in the decolored state is 4 or more, and the layer satisfies the relationship of (V2)-(V1)> 1. Thus, a fabric exhibiting a reversible color change from a metallic luster color to a color and a colored to metallic luster color is provided.

The lightness value (V of the color density of the mixed system in the colored state)
The reason why 2) is 4 or more and it is necessary to satisfy V2-V1> 1 is that, in this system, a non-discoloring colorant, that is, a non-thermochromic dye or pigment is mixed to be colored, so that the lightness value is It becomes smaller and varies depending on the color of dyes and pigments. For example, the lightness value is relatively large for yellow, orange, etc., and conversely, the lightness value is small for red, purple, etc. However, in order to obtain a satisfactory color change, it is necessary that the lightness value in the decolored state is greater than 1 if not less than the lightness value in the colored state. If it is 1 or less, the contrast is too small and clear. Don't make visible color changes. If the lightness value is 4 or more under such a condition, for example, a reversible color change from gold to colored or from colored to golden can be exhibited. However, if it is less than 4, the color density of the underlying color mixture layer becomes too high and the transmitted light is absorbed, so that the gold color is visible even in the decolored state. In the aspect of (C), the lightness value (V3) of the color density is 4 or more in the lower layer of the thermochromic layer, and V3-V4> 1 between the lightness value (V4) of the coloring state of the thermochromic layer. The non-color-changeable coloring layer satisfying the relationship is formed, and a metal-gloss-like thermochromic fabric exhibiting a reversible color change between the metal glossy color and the color of the non-color-changing colored layer is constituted. In the arrangement of achromatic colors, the brightness value of the thermochromic material at the time of emitting and erasing is 0 for perfect black and 10 for perfect white.
Is the lightness value of the Munsell color chart, which is divided so that the difference in the sense of brightness is evenly spaced, and the lightness of the chromatic color is the lightness value of the achromatic color with the same sense of brightness of the chromatic color. Indicates. That is, the smaller the lightness value is, the closer it is to black, and the larger the lightness value is, the closer it is to white. Therefore, it can be used as an index of how much visible light is absorbed and how much it is reflected. It will show how the light rays that pass through the layer are reflected and absorbed by the underlying thermochromic layer. Therefore, if the thermochromic layer has a lightness value of 6 or less, it has the ability to sufficiently absorb visible light that has passed through the metallic luster pigment, and as a result, can sufficiently absorb visible light that has passed through the metallic luster pigment, resulting in a golden color. appear. On the contrary, when the lightness value is 8 or more, visible light that has passed through the golden metallic luster pigment layer is reflected, so that both the yellow light reflected by the metallic luster pigment layer and the light reflected by the thermochromic layer are combined. It will not be seen as a metallic luster color because it will be visible. That is, it looks like a metallic luster color below the discoloration temperature of the thermochromic material,
It is an index of whether or not it has a characteristic that the metallic luster color disappears at a discoloration temperature or higher. The lightness value of the present invention is a value obtained by measuring a sample prepared as described below using a TC-3600 color difference meter manufactured by Tokyo Denshoku Co., Ltd.

1. Measurement of lightness value of thermochromic layer (including a system in which general color dyes and pigments are mixed) The parts in the following formulation examples are parts by weight. (1) Thermochromic layer (colored ← → colorless) Thermochromic material 10 parts, 50% acrylic ester resin /
45 parts of xylene solution, 20 parts of xylene and 20 parts of methyl isobutyl ketone are stirred and mixed, and spray-painted with a spray gun on a white vinyl chloride sheet having a brightness value of 9.1.
A thermochromic layer having a thickness of 40 μm after drying is prepared. The brightness value of the color-developed state and the color-erased state of the obtained thermochromic layer is measured. (2) Measurement of lightness value of thermochromic layer (colored 1 ← → colored 2) 10 parts of thermochromic material, desired amount of general dyes and pigments, 50% of acrylic acid ester resin / xylene solution 45 parts, xylene 2
Stir and mix 0 parts and 20 parts of methyl isobutyl ketone,
A white vinyl chloride sheet having a lightness value of 9.1 is spray coated with a spray gun to prepare a thermochromic layer having a thickness of 40 μm after drying. The brightness value of the color-developed state and the color-erased state of the obtained thermochromic layer is measured. 2. Measurement of lightness value of non-discoloring colored layer (coloring with general dyes / pigments) 50% acrylic ester resin / a desired amount of general dyes / pigments
45 parts of xylene solution, 20 parts of xylene and 20 parts of methyl isobutyl ketone are stirred and mixed, and spray-painted with a spray gun on a white vinyl chloride sheet having a brightness value of 9.1.
A non-discoloring colored layer having a thickness of 10 μm after drying is prepared. The brightness value of the obtained non-discoloring colored layer is measured. Hereinafter, examples of the present invention will be described, and also comparative example samples for the light resistance test will be described.

[0026]

【Example】

Example 1 Thermochromic pigment [black ← → colorless, discoloration temperature 15 ° C.] 30
Parts, 5 parts of fluorescent pink pigment, 70 parts of acrylic ester resin emulsion, 1 part of cross-linking agent are dispersed and screen-printed on white nylon cloth by rotary screen printing, and the brightness value of the mixed system at the time of coloring is 2.3. A thermochromic layer having a lightness value of 5.5 when decolored was provided. Next, the surface of natural mica was coated with 43% by weight of titanium oxide and the optical thickness was 2
Metal luster pigment 10 having a particle size of 10 to 60 μm at 10 nm
Parts, acrylic ester resin 40 parts, silicon antifoaming agent 0.5 parts, butyl acetate 20 parts, aromatic medium boiling point solvent 15
The ink in which the parts were evenly dispersed was similarly subjected to rotary screen printing to obtain a metallic luster thermochromic fabric. The fabric exhibited a golden color at 15 ° C or lower, and changed from gold to pink at 15 ° C or higher. Next, when the temperature is lowered to 15 ° C. or lower again, it becomes gold again and reversibly and repeatedly shows a change of gold ← → pink.

Application Example 1 The metallic luster thermochromic ski wear obtained in Example 1 was sewn to ski wear to produce metallic luster thermochromic ski wear. The ski wear has a pink color in the interior of a rest house etc., but on the slopes,
The whole turned golden. Next, when I returned to the rest house again, I was able to provide ski wear that turned pink, indoors pink, and on the slopes golden.

Example 2 A white polyester knit fabric printed with a fluorescent orange having a lightness value of 6.3 and a fluorescent green having a lightness value of 8.2 in a polka dot pattern, and a thermochromic color-memory pigment [black ← → Colorless, decoloring temperature 45 ° C., coloring temperature 15 ° C.] 30 parts, urethane resin emulsion 70 parts are dispersed and screen-printed with a lightning design so that the above polka dot pattern can be hidden, and the lightness value at the time of coloring is 2.2. A thermochromic layer having a lightness value of 9.0 when decolored was provided. Next, 52% by weight of the surface of natural mica
Coated with titanium oxide having an optical thickness of 330 nm and a particle size of 10 to 60 μm, 10 parts of a metallic luster pigment, 35 parts of an acrylic ester resin, 0.5 part of a silicon-based defoaming agent, 20 parts of butyl acetate, an aromatic system. An ink in which 15 parts of a medium boiling solvent was uniformly dispersed was screen-printed with a lightning design in the same manner to obtain a metallic luster thermochromic fabric. At 15 ° C. or lower, the above-mentioned cloth shows a metallic blue lightning bolt on a white background, but at 45 ° C. or higher, the metallic blue color disappears and changes into a fluorescent orange and fluorescent green polka dot pattern. The state was maintained. Then again 15
When the temperature was lowered to ℃ or below, metallic blue lightning appeared on a white background, and this state was maintained at room temperature.

Application Example 2 The metallic luster thermochromic fabric obtained in Example 2 was sewn into sports training wear to prepare a metallic luster thermochromic color memory sports training wear. The sports training wear is at body temperature,
Alternatively, it has a feature that it can maintain two types of patterns, a metallic blue lightning bolt on a white background or a fluorescent orange and fluorescent green polka dot pattern on a white background, at an ambient temperature of 20 to 40 ° C. That is, if metallic blue lightning is developed at 15 ° C or lower, it can be worn with a metallic blue lightning design on a white background in an environment of 20 to 40 ° C, and at 45 ° C or higher, metallic blue lightning When is erased, the color changes to a fluorescent orange and fluorescent green polka dot pattern on a white background.
You can wear this design in the environment of -40 ℃.

Example 3 Thermochromic pigment [pink ← → colorless, color changing temperature 20 ° C.] 30
Parts, 5 parts of fluorescent yellow pigment, 70 parts of acrylic ester resin emulsion, 1 part of a cross-linking agent are dispersed and coated on a white polyester-urethane cloth by doctor coating, and the brightness value of the mixed system is 4.5, A thermochromic layer having a lightness value of 8.9 when decolored was provided. Next, 10 parts of a metallic luster pigment having an optical thickness of 295 nm in which the surface of natural mica is coated with 48% by weight of titanium oxide and a particle size of 10 to 60 μm, an acrylic ester resin 40 parts, a silicon-based defoaming agent 0. An ink in which 5 parts, 20 parts of butyl acetate and 15 parts of an aromatic medium boiling point solvent were uniformly dispersed was similarly doctor coated to obtain a metallic luster thermochromic fabric. The fabric exhibited a metallic pink color at 20 ° C. or lower, and changed from metallic pink color to yellow at 20 ° C. or higher. Next, when the temperature is lowered to 20 ° C. or lower again, the color becomes metallic pink again and reversibly and repeatedly shows a change of metallic pink ← → yellow.

Application Example 3 The metallic luster color thermochromic fabric obtained in Example 3 was sewn into a swimsuit to prepare a metallic luster color thermochromic swimsuit. The swimsuit was yellow only when it was worn, but when it came into and out of the pool, the surface temperature of the swimsuit decreased due to the latent heat of evaporation of water, and the entire swimsuit turned metallic pink. After that, the color changed from metallic pink to yellow again due to the effect of body temperature, and it was possible to show a change of metallic pink ← → yellow by entering the pool any number of times. Needless to say, when the water temperature in the pool is 20 ° C or lower, the color changes from yellow to metallic pink when entering the pool.

Example 4 A white polyester cloth printed with a fluorescent orange having a lightness value of 6.3 and a green light having a lightness of 8.2 in a polka dot pattern was used, and a thermochromic color memory pigment [black ← → colorless, decolorized Temperature 45 ° C., coloring temperature 15 ° C.] 30 parts, 70 parts of urethane resin emulsion are dispersed, screen-printed with a lightning design so that the polka dot pattern can be concealed. A thermochromic layer having a lightness value of 9.0 was provided. Next, the surface of natural mica is coated with 52% by weight of titanium oxide and has an optical thickness of 330 nm and a particle size of 10 to 60.
10 parts of metallic luster pigment of μm, acrylic ester resin 3
5 parts, silicone antifoaming agent 0.5 parts, butyl acetate 20
Part, and 15 parts of an aromatic medium boiling point solvent were uniformly dispersed, and screen printing was similarly performed with a lightning design to provide a metallic luster pigment layer. Further, 2 parts of benzotriazole-based ultraviolet absorber, 50% acrylic resin / xylene solution 45
Parts, 0.5 parts of a silicon-based defoaming agent, 15 parts of methyl isobutyl ketone, and 15 parts of an aromatic medium boiling solvent, are uniformly mixed,
A metallic luster pigment layer was provided. Furthermore, 2 parts of a benzotriazole-based ultraviolet absorber, 45 parts of a 50% acrylic resin / xylene solution, 0.5 part of a silicon-based defoaming agent, 15 parts of methyl isobutyl ketone, and 15 parts of an aromatic medium-boiling solvent are uniformly mixed. Then, screen printing was performed on the metallic luster pigment layer to obtain a metallic luster color thermochromic fabric.

Comparative Example A thermochromic color-memory pigment [black ← → is added to a white polyester knit knit fabric printed with a fluorescent orange having a lightness value of 6.3 and a fluorescent green having a lightness value of 8.2 in a polka dot pattern. Colorless, decoloring temperature 40 ° C, coloring temperature 10 ° C] 30 parts,
70 parts of a urethane resin emulsion is dispersed and screen-printed with a lightning design so that the polka dot pattern can be hidden. The lightness value when coloring is 2.2 and the lightness value when decoloring is 9.0.
And a thermochromic fabric having no metallic luster pigment layer was obtained.

Light resistance test and its results The metal luster thermochromic fabrics obtained in Examples 2 and 4 and the thermochromic fabrics obtained in Comparative Examples were subjected to light irradiation with a carbon arc fade meter. As a result of visually observing the photodegradation, the irradiation time until the visual density by visual observation became half compared to the coloring density before the test was determined in Example 2.
Was 100 hours, the sample of Example 4 was 140 hours, and the sample of Comparative Example was 10 hours.

[0035]

EFFECT OF THE INVENTION The metallic luster thermochromic fabric of the present invention has a structure in which a thermochromic layer is provided on the surface of the fabric, and a metallic luster pigment layer is laminated on the layer. The correlation between the iris effect and transmission effect caused by the interference effect and the brightness of the thermochromic layer allows the viewer to see a clear color change from gold, silver, and various other metallic colors, as well as the metallic luster. Since the pigment layer absorbs or reflects at least a part of ultraviolet rays and visible rays that adversely affect the function deterioration of the thermochromic layer, the light resistance is remarkably improved as compared with the conventional thermochromic cloth. Thus, it is suitable for textile products such as sports clothes and leisure clothes. Further, since the thermochromic property of the thermochromic layer is not impaired by the metallic luster pigment layer at all, the properties of the thermochromic material are expressed as it is. High-sensitivity thermochromic materials with a narrow width are sensitive to temperature changes, and repeatedly develop and decolor.On the other hand, in systems where color memory sensitizing dyes with a large hysteresis width are applied, discoloration is necessary. Even after the heat or cold is removed, the appearances before and after the discoloration can be alternately retained in the room temperature range, and the user can form and enjoy a desired image by using the heat or cold heat tool.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an example of a metallic luster color thermochromic fabric of the present invention.

FIG. 2 is an external view of a swimsuit made of the metallic luster color thermochromic fabric of the present invention.

3 is an external view showing a discolored state of the swimsuit of FIG.

[Explanation of symbols]

 1 Metallic luster color thermochromic fabric 2 Fabric 3 Thermochromic layer 4 Metallic luster pigment layer 5 Swimsuit

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location D06M 15/00 D06P 3/00 A 9356-4H D06Q 1/02 D06M 15/00

Claims (7)

[Claims] 1. A thermochromic material composed of an electron-donating color-forming organic compound, an electron-accepting compound, and an organic compound medium that reversibly causes a color reaction between the two, is dispersed in a binder on the fabric surface. Is provided with a thermochromic layer, and a metallic luster pigment having a particle size of 5 to 100 μm in which the surface of natural mica is coated with titanium oxide is adhered in a binder in a dispersed state on the thermochromic layer. A metallic luster thermochromic fabric formed by laminating metallic luster pigment layers for adjusting the wavelength of light. 2. The metallic luster according to claim 1, wherein the thermochromic layer is composed of a thermochromic material having a color density lightness value of 6 or less in a colored state and a colorless lightness value of 8 or more in a decolored state. Thermochromic fabric. 3. The thermochromic layer is a thermochromic material in which a non-thermochromic colored dye or pigment is blended, and when the lightness value (V1) of the color density of the mixed system at the time of color development is 6 or less, the color is erased. And the color brightness value (V2) of the mixed system is 4 or more, and (V2)-
The metallic gloss thermochromic fabric according to claim 1, wherein (V1)> 1. 4. A metallic luster pigment is applied on the surface of natural mica.
The optical thickness of the coating layer coated with ˜44 wt% titanium oxide is 180-240 nm, the particle size is 5-60 μm, and the surface of natural metallic mica is 30-48 wt%.
Of titanium oxide, and the optical layer of the coating layer coated with 4-10 wt% of iron oxide has an optical thickness of 140-240 nm.
And a metallic luster pigment of gold color having a particle size of 5 to 60 μm, the surface of natural mica is coated with 30 to 48% by weight of titanium oxide,
The coating layer having 0.5 to 10% by weight of a non-thermochromic colored pigment coated thereon has an optical thickness of 140 to 240 nm, and a gold metallic luster pigment having a particle size of 5 to 60 μm. The coating layer coated with ~ 39 wt% titanium oxide has an optical thickness of 110-170 nm and a particle size of 5
~ 100μm silver metallic luster pigment, natural mica surface 4
The coating layer coated with 5 to 58% by weight of titanium oxide has an optical thickness of 245 to 415 nm and a particle size of 5 to 60 μm.
Metallic metallic luster pigment of 45 to 45% on the surface of natural mica
The coating layer coated with 58% by weight of titanium oxide has an optical thickness of 245 to 415 nm, and a metallic color metallic luster pigment having a particle size of 5 to 60 μm.
The coating layer coated with 0.5% by weight of titanium oxide and 0.5-10% by weight of a non-thermochromic colored dye / pigment has an optical thickness of 245 to 415 nm and a particle size of 5 to 60 μm.
The metallic luster color-changing cloth according to any one of claims 1 to 3, which is a pigment selected from the metallic metallic luster pigments. 5. The thermochromic layer is composed of a coloring material containing a thermochromic material containing a color-memory thermosensitive dye that exhibits a large hysteresis characteristic with respect to a color density-temperature curve due to temperature change. 4. The metallic luster color thermochromic cloth according to any one of items 1 to 3. 6. The thermochromic layer comprises a color material containing a thermochromic material having a hysteresis width of 3 ° C. or less with respect to a color density-temperature curve due to temperature change. The metallic luster-like thermochromic fabric according to the item. 7. A garment, at least a part of which is composed of the metallic luster thermochromic fabric according to any one of claims 1 to 6.