JP2008208287A - Photoluminescent thermochromic liquid composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photoluminescent thermochromic liquid composition which presents a brilliant color of a higher brightness and more variously changes its color with a temperature change of a reversibly thermochromic material. <P>SOLUTION: The photoluminescent thermochromic liquid composition comprises a photoluminescent pigment composed of flat glass flakes surface-coated with silicon dioxide and further coated with titanium dioxide and a vehicle containing a resin and a reversibly thermochromic composition containing as three essential components, an electron-donating color organic compound, an electron-accepting compound, and an organic compound medium which reversibly raises a color reaction between both compounds. The average particle size of the photoluminescent pigment lies in the range of 10-200 μm. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a bright tone thermochromic liquid composition. More specifically, the present invention relates to a bright-tone thermochromic liquid composition that exhibits a color tone that varies in color due to temperature changes.

Conventionally, several proposals have already been disclosed by the present applicant regarding a thermochromic paint exhibiting a metallic luster color and a coated body obtained using the same (for example, see Patent Documents 1 and 2). .
JP-A-6-107974 JP 2001-98171 A

  The above proposal is based on a combination of a metallic luster pigment in which the surface of natural mica or glass flakes is coated with titanium oxide and a thermochromic material, and exhibits a metallic luster color tone and a reversible thermochromic composition depending on the temperature change. Different things can be visualized by changing the color of the object, and it has applicability in various fields such as temperature indication, decoration, toy elements, and the like.

  The present invention further pursues the visual effect of this kind of metallic luster thermochromic liquid composition, exhibits a brighter brilliant color, and exhibits more various color changes by changing the temperature of the reversible thermochromic material. An object of the present invention is to provide a glittering thermochromic liquid composition.

The glittering thermochromic liquid composition of the present invention comprises a glittering pigment coated with silicon dioxide on the surface of a flat glass piece and further coated with titanium dioxide, an electron-donating color-forming organic compound, an electron-accepting compound, And a vehicle comprising a reversible thermochromic composition containing an organic compound medium that reversibly causes a color reaction of the two as essential three components, and a resin.
Furthermore, it is a requirement that the average particle size of the glitter pigment is in the range of 10 to 200 μm, and is a composition selected from paints, printing inks, inks for writing instruments, cosmetic lacquers, coloring liquids for fibers, and paints. To do.

  According to the present invention, it is possible to provide a unique glow-toning thermochromic liquid composition by a variety of changes in the appearance, in which a glittering effect due to a bright color and a color change due to a temperature change are woven together. It can be applied to various fields that require properties, saliency, designability, and the like.

The glitter pigment used in the present invention is a two-layer coating type pigment in which the surface of a flat glass piece is coated with silicon dioxide and further coated with titanium dioxide.
Since the silicon dioxide has higher hardness than glass and is excellent in acid resistance, even if the thickness of the glass piece serving as the core is reduced, it can be maintained in a state where it is difficult to break (specifically, a thickness of 1 μm or less). Therefore, the weight per reflection area can be reduced, and the light transmittance of the pigment can be improved.
Therefore, compared with the case of using a metallic luster pigment such as a conventional glass flake pigment (a pigment having the surface of the glass flake coated with titanium oxide), higher gloss is obtained when the same amount is added as the light transmission improves. And the dispersibility is improved because it is difficult to settle in the liquid composition by reducing the weight of the pigment particles.

  As the luster pigment, those having an average particle diameter of 10 to 200 μm are suitable. When the particle diameter is larger than 200 μm, the surface is rough and rough, and when it is smaller than 10 μm, it is difficult to give high luminance.

  Examples of the bright pigments include trade names “Miraval” manufactured by Merck & Co., Inc .: 5311 Scientific White, 5411 Magic White KU28, 5420 Magic Gold, 5421 Magic Copper, 5422 MagicL, 5423 MagicL, 5423 MagicL, 5423 5426 Magic Green and the like.

  Conventionally known pearlescent pigments, metal pigments such as aluminum and brass, dyes, pigments, fluorescent pigments, phosphorescent pigments and the like can also be used in combination. Examples of the pearlescent pigments include natural mica, synthetic mica, glass flakes, pigments having a surface coated with a metal oxide such as titanium oxide, and cholesteric liquid crystal polymer pigments.

As the reversible thermochromic composition, a composition containing three components of an electron-donating color-forming organic compound, an electron-accepting compound, and an organic compound medium that reversibly causes a color reaction is preferably used. Specific examples include reversible thermochromic compositions described in JP-B-51-44706 and JP-B-1-29398.
The composition discolors before and after a predetermined temperature (discoloration point), and only one specific state can exist in the normal temperature range among both states before and after the change. That is, the other state is maintained while the heat or cold necessary to develop the state is applied, but when the heat or cold is no longer applied, the state returns to the state exhibited in the normal temperature range, so-called, This is a type in which the temperature-color density due to temperature change shows a small hysteresis width (ΔH) and changes color.

  Further, as described in Japanese Patent Publication No. 4-17154 proposed by the present applicant, a thermosensitive color-changing color memory thermochromic composition that changes color while exhibiting a large hysteresis characteristic, that is, a color density due to a temperature change. The type of discoloration in which the shape of the curve in which the change is plotted follows a very different path between when the temperature is raised from the lower temperature side than the color change temperature range and when the temperature is lowered from the higher temperature side. A thermochromic composition having a feature of being able to memorize and retain a state changed at a temperature below the low temperature side color change point or above the high temperature side color change point in a normal temperature range between the low temperature side color change point and the high temperature side color change point. Things are also effective.

  Furthermore, as an electron-accepting compound proposed by the present applicant that develops color by heating from a decolored state as a heat-colorable composition, a specific compound having a linear or side chain alkyl group having 3 to 18 carbon atoms is proposed. Examples include a system to which an alkoxyphenol compound is applied (Japanese Patent Laid-Open Nos. 11-129623 and 11-5973), or a system to which a specific hydroxybenzoic acid ester is applied (Japanese Patent Laid-Open No. 2001-105732). . Furthermore, a system to which gallic acid ester or the like is applied (Japanese Patent Publication No. 51-44706) can be applied.

The reversible thermochromic composition described above is effective even when applied as it is, but it is preferable to use it in a microcapsule. This is because the reversible thermochromic composition can be kept in the same composition under various usage conditions and can exhibit the same effects.
By encapsulating in the microcapsule, a chemically and physically stable reversible thermochromic microcapsule pigment can be constructed, and a particle diameter of 0.1 to 100 μm, preferably 0.1 to 30 μm, satisfies the practicality. .
Microencapsulation includes conventionally known interfacial polymerization methods, in situ polymerization methods, in-liquid curing coating methods, phase separation methods from aqueous solutions, phase separation methods from organic solvents, melt dispersion cooling methods, air suspensions. There are a coating method, a spray drying method, and the like, which are appropriately selected according to the application. Further, a secondary resin film may be provided on the surface of the microcapsule according to the purpose to impart durability, or the surface characteristics may be modified for practical use.

In the present invention, the glitter pigment, the reversible thermochromic composition or the microcapsule pigment encapsulating the glitter pigment is dispersed in a vehicle to form a liquid composition such as a paint, a printing ink, a writing instrument ink, or a cosmetic lacquer. Use.
The vehicle is composed of a resin, a solvent, and various additives as required.
Examples of the resin include ionomer resin, isobutylene-maleic anhydride 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, vinyl acetate resin, vinyl chloride resin, vinylidene chloride resin, chlorinated vinyl chloride resin, vinyl chloride -Vinylidene chloride copolymer resin, chlorinated polyethylene resin, chlorinated polypropylene resin, polyamide resin, polycarbonate resin, polybutadiene, polyethylene terephthalate resin, polybutylene terephthalate resin Polystyrene resin, high impact polystyrene resin, styrene-maleic acid copolymer resin, acrylic-styrene copolymer resin, polypropylene resin, polymethylstyrene resin, acrylate resin, polymethyl methacrylate resin, epoxy acrylate resin, alkylphenol resin, rosin modified Phenol resin, rosin modified alkyd resin, phenol resin modified alkyd resin, styrene modified alkyd resin, epoxy resin modified alkyd resin, acrylic modified alkyd resin, amino alkyd resin, butyral resin, polyurethane resin, vinyl chloride-vinyl acetate copolymer resin, epoxy Resin, alkyd resin, styrene-butadiene copolymer resin, unsaturated polyester resin, saturated polyester resin, vinyl chloride-acrylic copolymer resin, polyisobuty , Butyl rubber, cyclized rubber, chlorinated rubber, polyvinyl alkyl ether, fluorine resin, silicon resin, phenol resin, petroleum hydrocarbon resin, ketone resin, toluene resin, xylene resin, melamine resin, urea resin, benzoguanamine resin, polyethylene Oxide, polyvinyl pyrrolidone, vinyl pyrrolidone-vinyl acetate copolymer resin, polyvinyl alcohol, modified polyvinyl alcohol, polyacrylate, polymethacrylate, acrylate copolymer emulsion, methacrylate ester copolymer emulsion, vinyl acetate -Acrylate ester copolymer emulsion, ethylene-vinyl acetate copolymer emulsion, styrene-acrylate copolymer emulsion, vinyl chloride copolymer emulsion, vinylidene chloride copolymer Synthetic resin such as coalescence emulsion, polyvinyl acetate emulsion, polyolefin emulsion, rosin ester emulsion, epoxy resin emulsion, polyurethane emulsion, synthetic rubber latex,
Low molecular weight polyethylene, low molecular weight polypropylene, low molecular weight polystyrene, coumarone plastic, polybutene, phenoxy plastic, liquid polybutadiene, liquid rubber, petroleum hydrocarbon resin, cyclopentadiene petroleum resin, etc.
Examples thereof include natural or semi-synthetic resins such as cellulose derivatives, alginic acid derivatives, rosin derivatives, starches, polysaccharides, gums, natural rubber, shellac, agar, casein, glue, gelatin, and polyterpenes.

Since these resins are in a solid state at room temperature, except for resin emulsions, some medium molecular weight polymers, and some reactive resins such as epoxy resins, water, aliphatic hydrocarbons, aromatic hydrocarbons, It can be made liquid by dissolving or dispersing in a solvent such as alcohols, glycols, glycol derivatives, esters, ketones and the like, and if necessary, various additives are added to prepare a liquid composition.
Examples of the additive include non-thermochromic colorants, crosslinking agents, curing agents, drying agents, plasticizers, viscosity modifiers, dispersants, ultraviolet absorbers, antioxidants, light stabilizers, anti-settling agents, and smoothing agents. , Gelling agents, antifoaming agents, matting agents, penetrating agents, pH adjusting agents, foaming agents, coupling agents, moisturizing agents, antifungal agents, antiseptics, rust inhibitors, and the like.

Using the bright tone thermochromic liquid composition, conventionally known methods such as screen printing, offset printing, gravure printing, coater, tampo printing, transfer printing means, brush coating, spray coating, electrostatic coating Paper, synthetic paper, thread, fabric, flocked or raised cloth, non-woven fabric, synthetic leather, leather, plastic, glass, ceramics, wood, stone, by means of electrodeposition coating, flow coating, roller coating, dip coating, etc. A bright and thermochromic layer can be obtained by forming a bright and thermochromic layer on a support such as metal.
The bright tone thermochromic layer is a layer formed by the other compounds by volatilization of the solvent in the liquid composition, and the bright pigment and the reversible thermochromic composition or a microcapsule containing the same. The pigment is fixed to the resin in a dispersed state.

Furthermore, on the bright tone reversible thermochromic layer of the laminate, light resistance can be improved by laminating a layer having an ultraviolet absorption effect, or a topcoat layer can be provided to improve durability. .
In the case where a non-thermochromic colored layer (including an image) is previously formed on the support, the colored layer can be concealed by a change in temperature, and the manner of change can be further diversified. It can be made.

  As the form of the laminate, a glittering thermochromic layer is fixed in a layered manner on the surface of the support, and the support is impregnated with a glittering pigment and a reversible thermochromic composition or a microcapsule pigment containing the same. Examples include various shaped articles, fibers, and paper-made products made of a non-permeable base material such as plastic, including a form that is fixed and partially exposed on the surface. Specific examples include clothes, footwear, and precious metals. , Lighting fixtures, toys, artificial flowers, stationery, daily necessities, kitchen utensils, cosmetics, exercise equipment, printed materials such as books, vehicles, machines, interior decorations, medical products, and the like.

The liquid composition in which the glitter pigment and the microcapsule pigment are dispersed in a vehicle is used as a paint, printing ink, writing ink, paint, or the like depending on the type of vehicle.
If a paint-forming vehicle is used as the vehicle, it becomes a bright-tone thermochromic paint.
Coating methods include brush coating, spray coating, electrostatic coating, dip coating, flow coating, roller coating, photopolymerization coating, etc., depending on the coating method and material to be coated, evaporative drying type, osmotic drying type, emulsion A paint selected from a mold, an oxidation polymerization type, a thermosetting resin type, a photocurable resin type, and the like is prepared.
If a vehicle for printing ink is used as the vehicle, a bright and thermochromic printing ink is prepared.
Printing methods include intaglio, letterpress, lithographic, stencil, and coater printing methods. Depending on the printing method and material to be printed, evaporation drying type, osmotic drying type, emulsion type, oxidation polymerization type, thermosetting resin A printing ink selected from a mold, a photocurable resin mold, and the like is prepared.
If a vehicle for writing instrument ink is used as the vehicle, a bright-tone thermochromic ink for writing instrument can be obtained.
The ink for writing instruments is adjusted in flow characteristics such as viscosity and shear thinning viscosity according to the writing mechanism, and various inks for writing instruments such as an evaporative drying type and an emulsion type are prepared according to the writing target.
If a lacquer for cosmetics is used as the vehicle, a bright-tone thermochromic cosmetic can be obtained.
Cosmetics include manicure cosmetics, makeup cosmetics, hair cosmetics, and the like, and cosmetics having various compositions are prepared according to the makeup target.
When a fiber treatment binder is used as the vehicle, a colored liquid for glittering thermochromic fibers can be obtained.
Examples of the fiber coloring treatment method include dipping, spray coating, and the like, and a fiber coloring liquid having an appropriate composition is prepared according to the treatment method and the target material.
A laminate is formed by providing a bright tone reversible thermochromic layer on a support of various materials and shapes using the bright tone thermochromic liquid composition described above.

  Examples and application examples are shown below, but the present invention is not limited to these examples. In addition, the part in an Example is a weight part.

Example 1
15 parts of a luster pigment formed by coating the surface of a flat glass piece with silicon dioxide and further with titanium dioxide (Merck, trade name: Miraval 5311 Scientific White, particle size: 10 to 100 μm), reversible thermochromic composition 15 parts of microcapsule pigment encapsulating the product is uniformly dispersed in a vehicle consisting of 45 parts of an acrylic ester resin emulsion, 1 part of an antifoaming agent and 24 parts of diluting water, and filtered through a 180 mesh screen to give a brilliant tone color change. An aqueous spray paint was obtained.
Here, the microcapsule pigment is composed of 3 parts 2-anilino-3-methyl-6-dibutylaminofluorane, 6 parts 4,4 '-(2-methyl-propylidene) bisphenol, 25 parts cetyl alcohol, stearyl caprate It is a microcapsule pigment obtained by encapsulating a reversible thermochromic composition comprising 25 parts of a compatible solution by an epoxy resin / amine curing agent interfacial polymerization method.

  The paint became colorless when heated to 30 ° C. or higher, and when it was less than 25 ° C., the reversible thermochromic composition developed a black color, and a bright luminance color was visually observed. Moreover, this aspect change could be repeated.

Example 2
A glossy pigment formed by coating the surface of a flat glass piece with silicon dioxide and further coating with titanium dioxide (Merck, trade name: Miraval 5422 Magic Red, particle size 20-200 μm), 5 parts, reversible thermochromic composition 10 parts of microcapsule pigment encapsulating the product is stirred and mixed in a vehicle comprising 40 parts of an acrylic resin / xylene solution, 3 parts of an ultraviolet absorber, 30 parts of xylene, 30 parts of methyl isobutyl ketone, and 4 parts of an isocyanate curing agent. As a result, a bright-tone, thermochromic oil-based spray paint was obtained.
Here, the microcapsule pigment is composed of 3 parts 2-anilino-3-methyl-6-dibutylaminofluorane, 6 parts 4,4 '-(2-methyl-propylidene) bisphenol, 25 parts stearyl alcohol, stearyl laurate. It is a microcapsule pigment obtained by encapsulating a reversible thermochromic composition comprising 25 parts of a compatible solution by an epoxy resin / amine curing agent interfacial polymerization method.

  When the coating is heated to 40 ° C. or higher, the reversible thermochromic composition is decolored and colorless, and at less than 38 ° C., the reversible thermochromic composition is colored black and has a bright red glow. Visualized. Moreover, this aspect change could be repeated.

Example 3
15 parts of a luster pigment (manufactured by Merck & Co., trade name: Miraval 5411 Magic White, particle size 20 to 200 μm) formed by coating the surface of a flat glass piece with silicon dioxide and further with titanium dioxide, reversible thermochromic composition 15 parts of a microcapsule pigment encapsulating a product in a vehicle comprising 45 parts of a soft liquid epoxy resin, 20 parts of a hard liquid epoxy resin, 2 parts of an ultraviolet absorber, 2 parts of a thixotropic agent, and 0.3 part of an antifoaming agent. After uniformly dispersing and mixing, 20 parts of a room temperature curing type aliphatic polyamine and 1 part of a fluorescent pink pigment were added, and the mixture was stirred and mixed uniformly to obtain a bright and thermochromic soft epoxy ink.
Here, the microcapsule pigment was composed of 3 parts 2-anilino-3-methyl-6-dibutylaminofluorane, 6 parts 4,4 '-(2-methyl-propylidene) bisphenol, 25 parts myristyl alcohol, butyl stearate. It is a microcapsule pigment obtained by encapsulating a reversible thermochromic composition comprising 25 parts of a compatible solution by an epoxy resin / amine curing agent interfacial polymerization method.

  When the epoxy ink was heated to 12 ° C. or higher, it became a fluorescent pink color. Below 10 ° C., the reversible thermochromic composition developed a black color, and a bright metallic luster color was visually observed. Moreover, this aspect change could be repeated.

Example 4
15 parts of a luster pigment formed by coating the surface of a flat glass piece with silicon dioxide and further coating with titanium dioxide (manufactured by Merck, trade name: Miraval 5311 Scientific White, particle size 10 to 100 μm), produced in Example 2 20 parts of the microcapsule pigment thus obtained are uniformly dispersed and mixed in a vehicle comprising 60 parts of a hard liquid epoxy resin, 2 parts of an ultraviolet absorber, 2 parts of a thixotropic agent, and 0.5 part of an antifoaming agent, and then a room temperature curing type. 25 parts of an aliphatic polyamine was added and uniformly dispersed and mixed to obtain a bright-tone thermochromic epoxy ink.

  The epoxy ink became colorless when heated to 40 ° C. or higher, and when it was lower than 38 ° C., the reversible thermochromic composition developed a black color, and bright and bright lustrous colors were visually observed. Moreover, this aspect change could be repeated.

Example 5
Lubricant pigment formed by coating the surface of a flat glass piece with silicon dioxide and further coating with titanium dioxide (Merck, trade name: Miraval 5411 Magic White, particle size 20-200 μm), 20 parts, reversible thermochromic composition 20 parts of the microcapsule pigment encapsulating the product is uniformly in a vehicle comprising 50 parts of an ethylene vinyl acetate copolymer resin emulsion, 2 parts of an antifoaming agent, 1 part of a thickening agent, 1 part of a leveling agent and 0.1 part of a preservative. To obtain a bright-tone thermochromic screen ink.
The microcapsule pigment is a compatible solution of 3 parts 2-anilino-3-methyl-6-dibutylaminofluorane, 6 parts 4,4 '-(2-methyl-propylidene) bisphenol and 50 parts neopentyl stearate. Is obtained by encapsulating an epoxy resin / amine curing agent by an interfacial polymerization method, and has two discoloration points (low temperature side discoloration point: 15 ° C., high temperature side discoloration point: 32 ° C.). Is a temperature-sensitive color-change color memory type microcapsule pigment.

  When the screen ink was heated to 32 ° C. or higher, the screen ink became colorless. At 15 ° C. or lower, the reversible thermochromic composition developed a black color, and a bright luminance color was visually observed. Also, in the range of 15 to 32 ° C., once heated to 32 ° C. or higher, it is colorless up to a temperature exceeding 15 ° C., and once cooled to 15 ° C. or lower, it is less than 32 ° C. depending on the viewing angle. I was able to see the bright colors with different brightness. Furthermore, this change in appearance could be repeated.

Application example 1
The spray paint prepared in Example 1 was filled in a spray gun (0.6 mm in diameter), coated on the entire surface of the white fabric, and then dried to form a bright and thermochromic layer, thereby forming a bright and thermochromic fabric. Obtained. Further, the fabric was sewn to prepare a swimsuit for a doll.
Since the reversible thermochromic composition develops a black color at room temperature (25 ° C.), the doll swimsuit has a bright luster and is reversible when hot water of 30 ° C. or higher is attached. Since the composition becomes colorless, the white color of the fabric is visible. Again, when it was allowed to stand at room temperature, a bright brilliant color was visible. This mode change could be repeated by temperature change.

Application example 2
The spray paint (caliber: 0.6 mm) filled in the spray paint prepared in Example 2 was applied to the entire body of a miniature car that was injection molded with white ABS resin, and then dried to form a bright and heat-discoloring layer. Formed to obtain a brilliant tone thermochromic miniature car.
The bright tone thermochromic miniature car has a reversible thermochromic composition that develops a black color at room temperature (25 ° C.). As the color changing composition becomes colorless, a white miniature car is visible. Again, when it was allowed to stand at room temperature, a bright brilliant color was visible. This mode change could be repeated by temperature change.

Application example 3
Using the epoxy ink prepared in Example 3, the letter “S” was printed on a white synthetic leather glove, and heated and cured at 70 ° C. for 1.5 hours to form a glittering and thermochromic layer. A thermochromic glove was obtained.
In the bright tone thermochromic gloves, the reversible thermochromic composition becomes colorless at room temperature (25 ° C.), so that the fluorescent pink letter “S” is visible, and the thermoreversible thermochromic property is outdoors below 10 ° C. Since the composition develops a black color, the letter “S” having a bright and bright color is visible. When it was allowed to stand again at room temperature, it became fluorescent pink letters. This mode change could be repeated by temperature change.

Application example 4
Using the epoxy ink prepared in Example 4, a crane pattern was printed on a stainless steel screen using a curved surface printing machine on the side of a white ceramic mug, and then heat cured at 70 ° C. for 1 hour to give a glittering tone. A thermochromic layer was formed to obtain a bright tone thermochromic mug.
Since the reversible thermochromic composition is colored black at room temperature (25 ° C.), the bright thermochromic mug is visually recognized as a brightly colored crane, and 70 ° C. warm water is placed in the cup. When poured, the reversible thermochromic composition becomes colorless, so a white mug is visible. When hot water was taken out and left at room temperature, a brightly colored crane pattern appeared again. This mode change could be repeated by temperature change.

Application example 5
On the transparent support made of a soft vinyl chloride resin, a bright and heat discoloration layer of an airplane design was formed using the screen ink prepared in Example 5, and then a solid color was printed on the upper surface using a non-color-changing white printing ink. Printing was performed to form a non-discoloring layer.
Next, another support was bonded onto the non-color-changing layer to obtain a bright-tone thermochromic sheet.
When viewed from the transparent support side, since the thermochromic composition develops a black color at 15 ° C. or lower, the glittering thermochromic sheet is visually recognized as an airplane pattern having a high luminance color on a white background. Above ℃, the reversible thermochromic composition becomes colorless and a white solid pattern is visible.
Moreover, in the range of 15 to 32 ° C., when the temperature is once raised to 32 ° C. or higher, the thermochromic composition is colorless and a white solid pattern is visually observed at a temperature higher than 15 ° C. and once cooled to 15 ° C. or lower. In this case, the thermochromic composition is colored in black until less than 32 ° C., and a brightly colored design is alternatively viewed.
It should be noted that this change in appearance could be repeated due to temperature changes.

Claims (3)

  The surface of the flat glass piece is coated with silicon dioxide, and then the glittering pigment coated with titanium dioxide, the electron-donating color-forming organic compound, the electron-accepting compound, and the color reaction of both are reversibly generated. A glittering thermochromic liquid composition comprising a vehicle comprising a reversible thermochromic composition containing an organic compound medium as essential three components and a resin.   The glittering thermochromic liquid composition according to claim 1, wherein the glittering pigment has an average particle size in the range of 10 to 200 μm.   3. The glittering thermochromic liquid composition according to claim 1 or 2, which is a composition selected from paints, printing inks, writing instrument inks, cosmetic lacquers, fiber coloring liquids, and paints.