WO2015119161A1 - 感温変色性色彩記憶性組成物及びそれを内包した感温変色性色彩記憶性マイクロカプセル顔料 - Google Patents
感温変色性色彩記憶性組成物及びそれを内包した感温変色性色彩記憶性マイクロカプセル顔料 Download PDFInfo
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- WO2015119161A1 WO2015119161A1 PCT/JP2015/053125 JP2015053125W WO2015119161A1 WO 2015119161 A1 WO2015119161 A1 WO 2015119161A1 JP 2015053125 W JP2015053125 W JP 2015053125W WO 2015119161 A1 WO2015119161 A1 WO 2015119161A1
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- YLETXBFVUWYHIW-UHFFFAOYSA-N NC(CC1)=CCCC1O Chemical compound NC(CC1)=CCCC1O YLETXBFVUWYHIW-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K8/00—Pens with writing-points other than nibs or balls
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K9/00—Tenebrescent materials, i.e. materials for which the range of wavelengths for energy absorption is changed as a result of excitation by some form of energy
- C09K9/02—Organic tenebrescent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/333—Colour developing components therefor, e.g. acidic compounds
- B41M5/3333—Non-macromolecular compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/337—Additives; Binders
- B41M5/3375—Non-macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0097—Dye preparations of special physical nature; Tablets, films, extrusion, microcapsules, sheets, pads, bags with dyes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/16—Writing inks
- C09D11/17—Writing inks characterised by colouring agents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/16—Writing inks
- C09D11/18—Writing inks specially adapted for ball-point writing instruments
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/50—Sympathetic, colour changing or similar inks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/305—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers with reversible electron-donor electron-acceptor compositions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/323—Organic colour formers, e.g. leuco dyes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1007—Non-condensed systems
Definitions
- the present invention relates to a thermochromic color memory composition and a thermochromic color memory microcapsule pigment containing the same. More specifically, it exhibits a reversible discoloration of color development and decoloration with a large hysteresis characteristic due to temperature change, and even after the application of heat or cold heat required for discoloration is removed, either the colored state or the decolored state.
- the present invention relates to a temperature-sensitive color-changing color memory composition that holds the color in a reversible and reversible manner, and a temperature-sensitive color-changing color memory microcapsule pigment containing the same.
- the applicant has previously proposed this type of temperature-sensitive color-changing color memory material (see, for example, Patent Documents 1 to 6).
- the temperature-sensitive color-change color memory material changes color before and after the color change temperature as in the case of the conventional reversible thermo-color change material, and only one specific state exists in the normal temperature range of both the states before and after the color change. However, the other state is maintained while the heat or cold heat necessary for the state to be developed is applied, and when the heat or cold heat is no longer applied, the color changes compared with the type that returns to the state exhibited at room temperature.
- Either a color at a temperature lower than the temperature or a color at a temperature higher than the temperature can be selectively retained in a normal temperature range, and can be retained interchangeably by applying heat or cold as required, and a heat-sensitive recording material It is applied to various fields such as toys and printing.
- This kind of color memory effect is manifested in a system in which a specific compound is applied as a constituent component among compounds selected from esters that control the color reaction.
- the present invention pursues a compound as a reaction medium that exhibits the color memory effect, increases the degree of freedom of selection of the reaction medium, and further increases the utilization of this type of temperature-sensitive color-changing color memory material. It is the purpose.
- the present inventor is a system in which an ester compound having a specific structure is applied as a reaction medium for a color reaction, exhibits a thermochromic characteristic with a large hysteresis width ( ⁇ H), and exhibits effective color memory.
- the headline and the present invention were completed.
- the present invention controls the color reaction of the component (a) composed of an electron-donating color-forming organic compound, the component (b) composed of an electron-accepting compound, and the component (a) and the component (b).
- the present invention relates to a thermochromic color memory composition comprising, as a reaction medium, a component (c) composed of an ester compound represented by the following formula (1).
- R represents an alkyl group having 3 to 18 carbon atoms or an aliphatic acyl group having 3 to 18 carbon atoms
- X represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or 1 or 2 carbon atoms
- Y represents either a hydrogen atom or a methyl group
- Z represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 or 2 carbon atoms, a halogen atom Indicates one of these.
- a temperature-sensitive color-changing color memory microcapsule pigment containing the temperature-sensitive color-changing color memory composition is required.
- the temperature-sensitive color-changing color memory microcapsule pigment of the present invention causes reversible discoloration of color development and decoloration.
- a wide hysteresis width ( ⁇ H) is applied to the color density-temperature curve.
- Show reversible discoloration of color development and decoloration, and both the color at the lower temperature side and the color at the higher temperature side can be memorized and retained, and by applying heat or cold as necessary, Since any color can be reversibly reproduced and the characteristics that can be stored can be effectively expressed, it can be applied to various fields such as thermal recording materials, toys, decorations, temperature indications, learning elements, and printing fields. It is possible to provide a thermochromic color memory composition having a temperature sensitive color change and a thermochromic color memory microcapsule pigment containing the same.
- thermochromic color memory composition of the present invention and the thermochromic color memory microcapsule pigment using the same (reversible thermochromic composition having color memory and color memory using the same)
- thermochromic color memory microcapsule pigment using the same
- the hysteresis characteristics of the reversible thermochromic microcapsule pigment will be described based on the graph represented by the color density-temperature curve in FIG.
- the vertical axis represents color density
- the horizontal axis represents temperature.
- the color density due to temperature change varies along the arrow.
- A is a point indicating a density at a temperature T 4 (hereinafter referred to as a complete color erasing temperature) reaching a complete color erasing state
- B is a temperature T 3 (hereinafter referred to as a color erasing start temperature) at which a complete color development state can be maintained
- C is a point indicating a density at a temperature T 2 (hereinafter referred to as a color development start temperature) at which a completely decolored state can be maintained
- D is a temperature T 1 at which a complete color developed state is reached. This is a point indicating the density at (hereinafter referred to as a complete color development temperature).
- Discoloration temperature region is a temperature region between the T 1 and T 4, the temperature range is substantially discoloration temperature region between T 2 and T 3, i.e., a temperature that can hold any state of the colored state or decolored state It is an area.
- the reversible thermochromic microcapsule pigment in the decolored state can be started to change to the colored state by cooling to a temperature not higher than the color development start temperature, and even to a temperature below the complete color development temperature. By cooling, a completely colored state can be obtained, and this state can be maintained unless the temperature of the reversible thermochromic microcapsule pigment is raised to the decolorization start temperature.
- thermochromic microcapsule pigment in a colored state and heating it to a temperature equal to or higher than the decoloring start temperature, a change to the decolored state can be started.
- a temperature equal to or higher than the color temperature By heating to a temperature equal to or higher than the color temperature, a completely decolored state can be obtained, and this state can be maintained unless the temperature of the reversible thermochromic microcapsule pigment is lowered to the color development start temperature.
- the length of the line segment EF is a scale indicating the discoloration contrast
- the length of the line segment HG is a temperature width indicating the degree of hysteresis (hereinafter, the hysteresis width is expressed as ⁇ H), and this ⁇ H value is large. Thus, it is easier to maintain each state before and after the color change.
- the ⁇ H value that can be maintained in each state before and after the color change is 8 ° C. or more, and specifically in the range of 8 ° C. to 80 ° C.
- ⁇ t which is the difference between T 4 and T 3 , or the difference between T 2 and T 1 , is a scale indicating the sensitivity of discoloration, preferably in the range of 1 ° C.
- the complete decoloring temperature (T 4 ) is preferably 40 ° C. or higher, and more preferably 50 ° C. or higher. Preferably, it is 60 ° C. or higher.
- the color development start temperature (T 2 ) is preferably 0 ° C. or lower, more preferably ⁇ 5 ° C. or lower, and further preferably ⁇ 10 ° C. or lower.
- the component ratios of components (a), (b), and (c) in the present invention depend on the color density, the color change temperature, the color change form, and the type of each component, but are generally components that provide desired characteristics.
- the ratio of component (b) is preferably 0.1 to 50 parts, more preferably 0.5 to 20 parts, and component (c) is preferably 1 to 800 parts, relative to 1 part of component (a). Preferably, it is in the range of 5 to 200 parts (all the proportions are based on mass).
- Each component may be used in combination of two or more, and an antioxidant, an ultraviolet absorber, an infrared absorber, a dissolution aid and the like can be added as long as the function is not hindered.
- Examples of the component (a) of the present invention that is, the electron-donating color-forming organic compound include phthalide compounds, fluoran compounds, styrinoquinoline compounds, diazarhodamine lactone compounds, pyridine compounds, quinazoline compounds, and bisquinazoline compounds. Of these, phthalide compounds and fluoran compounds are preferred.
- Examples of the phthalide compounds include diphenylmethane phthalide compounds, phenyl indolyl phthalide compounds, indolyl phthalide compounds, diphenyl methane azaphthalide compounds, phenyl indolyl azaphthalide compounds, and derivatives thereof. , Phenyl indolyl azaphthalide compounds, and derivatives thereof are preferred.
- Examples of the fluorane compound include aminofluorane compounds, alkoxyfluorane compounds, and derivatives thereof.
- Examples of the electron donating color-forming organic compound are shown below. 3,3-bis (p-dimethylaminophenyl) -6-dimethylaminophthalide, 3- (4-diethylaminophenyl) -3- (1-ethyl-2-methylindol-3-yl) phthalide, 3,3-bis (1-n-butyl-2-methylindol-3-yl) phthalide, 3,3-bis (2-ethoxy-4-diethylaminophenyl) -4-azaphthalide, 3- [2-ethoxy-4- (N-ethylanilino) phenyl] -3- (1-ethyl-2-methylindol-3-yl) -4-azaphthalide, 3,6-diphenylaminofluorane, 3,6-dimethoxyfluorane, 3,6-di-n-butoxyfluorane, 2-methyl-6- (N-ethyl-Np-tolylamino) fluoran
- the phenyl group forming the xanthene ring has a substituent on the phenyl group forming the lactone ring and the substituent (for example, And a compound having an alkyl group such as a methyl group or a halogen atom such as a chloro group.
- the electron-accepting compound for example, a compound group having an active proton, a pseudo-acidic compound group (a compound group that is not an acid but acts as an acid in the composition to cause the component (a) to develop color) And a group of compounds having electron vacancies.
- Examples of the compound having an active proton include a compound having a phenolic hydroxyl group and a metal salt thereof, a carboxylic acid and a metal salt thereof, preferably an aromatic carboxylic acid, an aliphatic carboxylic acid having 2 to 5 carbon atoms and a metal salt thereof. Acidic phosphoric acid esters and metal salts thereof, and azole compounds and derivatives thereof, preferably 1,2,3-triazole and derivatives thereof. Among these, effective thermochromic properties can be expressed. Therefore, a compound having a phenolic hydroxyl group is preferable.
- the compounds having a phenolic hydroxyl group widely include monophenol compounds to polyphenol compounds, and further include bis-type, tris-type phenols, and phenol-aldehyde condensation resins.
- compounds having a phenolic hydroxyl group those having at least two benzene rings or those having a bishydroxyphenyl sulfide structure are preferred.
- These compounds may have a substituent, and examples of the substituent include an alkyl group, an aryl group, an acyl group, an alkoxycarbonyl group, a carboxy group and an ester or amide group thereof, and a halogen group.
- examples of the metal contained in the metal salt include sodium, potassium, calcium, zinc, zirconium, aluminum, magnesium, nickel, cobalt, tin, copper, iron, vanadium, Examples include titanium, lead, and molybdenum.
- examples of the compound having a phenolic hydroxyl group include monophenols to polyphenols, and further have an alkyl group, an aryl group, an acyl group, an alkoxycarbonyl group, a carboxy group and an ester or amide group thereof, a halogen group, and the like as substituents. And bis-type, tris-type phenols, phenol-aldehyde condensation resins and the like.
- the metal salt of the compound which has the said phenolic hydroxyl group may be sufficient.
- Component (c) functions as a reaction medium that controls the color reaction between component (a) and component (b).
- Component (c) used in the present invention is an ester compound represented by the following formula (1), and can be obtained by reaction of alkoxybenzoic acid with phenoxyethanol or phenoxypropanol.
- R in the formula represents an alkyl group having 3 to 18 carbon atoms or an aliphatic acyl group having 3 to 18 carbon atoms, preferably an alkyl group having 4 to 14 carbon atoms or an aliphatic group having 6 to 16 carbon atoms.
- An acyl group, more preferably an alkyl group having 4 to 12 carbon atoms, or an aliphatic acyl group having 8 to 14 carbon atoms is shown.
- X represents any one of a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, an alkoxy group having 1 or 2 carbon atoms, and a halogen atom, and preferably any one of a hydrogen atom, a methyl group, and a methoxy group.
- Y represents either a hydrogen atom or a methyl group, preferably a hydrogen atom.
- Z represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 or 2 carbon atoms, or a halogen atom, preferably any one of a hydrogen atom, a methyl group, and a methoxy group, and more preferably Represents a hydrogen atom.
- ester compound represented by the formula (1) Specific examples of the ester compound represented by the formula (1) are shown below.
- the ester compound has a wide hysteresis width similar to that of ester compounds used in conventional temperature-sensitive color-changing color memory compositions, and is either a low-temperature color or a high-temperature color from the color-change temperature range. It is excellent in the function that can selectively hold and is excellent in applicability to various uses.
- two or more components (c) having different structures may be used in combination.
- other esters, alcohols, carboxylic acids, ketones, amides, etc. can be used in combination.
- esters having similar chemical properties are used in combination. It is preferable.
- the three components (a), (b), and (c) can be encapsulated in a microcapsule to form a temperature-sensitive color-changing color memory microcapsule pigment. Even when contacted with a chemically active substance such as a basic substance or a peroxide or other solvent components, the heat resistance stability can be improved.
- a secondary resin film may be provided on the surface of the microcapsule pigment according to the purpose to impart durability, or the surface characteristics may be modified for practical use.
- the microcapsule pigment preferably has an average particle size of 0.1 to 50 ⁇ m, more preferably 0.1 to 30 ⁇ m, still more preferably 0.5 to 20 ⁇ m, and the average particle size of the microcapsule pigment Is within this range, the practicality is improved.
- the average particle size and particle size distribution are measured using, for example, a laser diffraction / scattering type particle size distribution measuring apparatus (manufactured by Horiba, Ltd .; LA-300), and the average particle size ( It can be determined by calculating the median diameter) on a volume basis.
- the average particle size of the microcapsule pigment is 50 ⁇ m or less, dispersion stability and processability can be maintained when blended into ink, paint, or thermoplastic resin. Further, when the average particle size is 0.1 ⁇ m or more, high density color developability can be exhibited.
- the ⁇ H value can be expanded as compared with the case where the microcapsule pigment is not finely divided.
- inclusion: wall membrane 6: 1 to 1: 1 (mass ratio).
- Microencapsulation methods include conventionally known interfacial polymerization methods using isocyanates, in situ polymerization methods such as melamine-formalin, in-liquid curing coating methods, phase separation methods from aqueous solutions, and phase separation methods from organic solvents. There are a melt dispersion cooling method, an air suspension coating method, a spray drying method, and the like, which are appropriately selected according to use.
- the microcapsule pigment may be mixed with a general dye or pigment (non-thermochromic property) to exhibit a color change behavior from color (1) to color (2).
- the temperature-sensitive color-changing color memory microcapsule pigment can be dispersed in a vehicle containing additives as necessary to obtain a temperature-sensitive color-changing color memory liquid composition.
- a vehicle containing additives as necessary to obtain a temperature-sensitive color-changing color memory liquid composition.
- Specific examples of such compositions include: (i) printing inks used for screen printing, offset printing, process printing, gravure printing, coater, tampo printing, etc. (ii) brush coating, spray coating, electrostatic coating, Paints used for electrodeposition coating, flow coating, roller coating, dip coating, etc. (iii) ink for writing instruments such as for marking pens, ballpoint pens, fountain pens, brush pens, etc. (iv) inks for applicators, (v ) Paints (vi) cosmetics, (vii) coloring liquids for fibers, and the like.
- thermochromic color memory liquid composition is preferably 5 to 40% by mass, more preferably 10 to 40% by mass, based on the total mass of the thermochromic color memory liquid composition. More preferably, 10 to 30% by mass of a thermochromic color memory microcapsule pigment can be contained. When the content of the microcapsule pigment is in the above range, a desired color density can be achieved, and further, the deterioration of ink outflow can be prevented.
- Additives include resins, crosslinking agents, curing agents, drying agents, plasticizers, viscosity modifiers, dispersants, UV absorbers, antioxidants, light stabilizers, antisettling agents, smoothing agents, gelling agents, Examples include foaming agents, matting agents, penetrating agents, pH adjusting agents, foaming agents, coupling agents, moisturizing agents, fungicides, antiseptics, and rust inhibitors.
- Examples of the vehicle include an oily vehicle containing an organic solvent, or an aqueous vehicle containing water and, if necessary, an organic solvent.
- Organic solvents include ethanol, propanol, butanol, glycerin, sorbitol, triethanolamine, diethanolamine, monoethanolamine, ethylene glycol, diethylene glycol, thiodiethylene glycol, polyethylene glycol, propylene glycol, butylene glycol, ethylene glycol monomethyl ether, ethylene glycol mono Examples include ethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, propylene glycol monobutyl ether, ethylene glycol monomethyl ether acetate, sulfolane, 2-pyrrolidone and N-methyl-2-pyrrolidone. Rukoto can.
- Examples of the ink composition for writing instruments include a shear-thinning ink composition containing a shear-thinning agent in a vehicle, a water-soluble polymer flocculant in the vehicle, and an agglomeration in which a pigment is suspended in a gentle aggregation state. Can be mentioned.
- a shear thinning agent By including a shear thinning agent, it is possible to suppress aggregation and sedimentation of the pigment, and it is possible to suppress bleeding of the handwriting, so that good handwriting can be formed. Furthermore, when filling the ballpoint pen with the ink composition, ink leakage from the gap between the ball and the tip when not in use is prevented, or the ink composition backflows when the writing tip is left facing upright (upright state). Can be prevented.
- shear thinning agent examples include xanthan gum, welan gum, succinoglycan (average molecular weight of about 1 to 8 million) whose constituent monosaccharide is an organic acid-modified heteropolysaccharide of glucose and galactose, guar gum, locust bean gum and derivatives thereof , A polymer having a weight average molecular weight of 100,000 to 150,000, mainly composed of hydroxyethyl cellulose, alkyl alginate, alkyl ester of methacrylic acid, and a gelling ability extracted from seaweed such as glucomannan, agar and carrageenan.
- water-soluble polymer flocculants include polyvinyl pyrrolidone, polyethylene oxide, and water-soluble polysaccharides.
- water-soluble polysaccharides examples include tragacanth gum, guar gum, pullulan, cyclodextrin, water-soluble cellulose derivatives, etc.
- water-soluble cellulose derivatives include methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, etc. Is mentioned.
- Combining a polymer flocculant with a comb polymer dispersant having a carboxyl group in the side chain and an organic nitrogen sulfur compound can improve the dispersibility of loose aggregates of microcapsule pigments by the polymer flocculant. it can.
- the comb polymer dispersant having a carboxyl group in the side chain is not particularly limited as long as it is a comb polymer compound having a plurality of carboxyl groups in the side chain.
- An acrylic polymer compound having a suitable product is exemplified, and trade name: Solsperse 43000 manufactured by Nippon Lubrizol Corporation can be exemplified.
- the organic nitrogen sulfur compound further suppresses the sedimentation of the microcapsule pigment due to vibration when the ink composition is filled into a writing instrument for practical use. This is because the dispersibility of dispersing loose aggregates of microcapsule pigments with a comb-type polymer dispersant having a carboxyl group in the side chain is further improved.
- organic nitrogen sulfur compound a compound selected from a thiazole compound, an isothiazole compound, a benzothiazole compound, and a benzoisothiazole compound is used.
- organic nitrogen sulfur compound examples include 2- (4-thiazoyl) -benzimidazole (TBZ), 2- (thiocyanatomethylthio) -1,3-benzothiazole (TCMTB), 2-methyl-4-isothiazoline-3
- TZ 2- (4-thiazoyl) -benzimidazole
- TCMTB 2- (thiocyanatomethylthio) -1,3-benzothiazole
- 2-methyl-4-isothiazoline-3 One or more compounds selected from -one and 5-chloro-2-methyl-4-isothiazolin-3-one are used, preferably 2- (4-thiazoyl) -benzimidazole (TBZ), 2- One or more compounds selected from methyl-4-isothiazolin-3-one and 5-chloro-2-methyl-4-isothiazolin-3-one are used.
- the mass ratio of the comb-type polymer dispersant having a carboxyl group in the side chain and the organic nitrogen sulfur compound is preferably 1: 1 to 1:10, and more preferably 1: 1 to 1: 5. preferable.
- This water-soluble resin composition also has an effect of further improving the stability of the microcapsule pigment in the ink composition containing the comb polymer dispersant having a carboxyl group in the side chain and the organic nitrogen sulfur compound.
- water-soluble resin examples include alkyd resins, acrylic resins, styrene maleic acid copolymers, cellulose derivatives, polyvinyl pyrrolidone, polyvinyl alcohol, dextrin, etc. Among these, polyvinyl alcohol is preferably used.
- a partially saponified polyvinyl alcohol having a saponification degree of 70 to 89 mol% is more preferably used because it is highly soluble even when the pH of the ink composition is in an acidic range.
- the addition amount of the water-soluble resin is preferably 0.3 to 3.0% by mass, more preferably 0.5 to 1.5% by mass in the ink composition.
- a higher fatty acid such as oleic acid, a nonionic surfactant having a long-chain alkyl group, a polyether-modified silicone oil, a thiophosphorous acid tri (alkoxycarbonylmethyl ester) Or thiophosphorous acid triesters such as thiophosphorous acid tri (alkoxycarbonylethyl ester), phosphoric acid monoesters such as polyoxyethylene alkyl ether or polyoxyethylene alkyl aryl ether, polyoxyethylene alkyl ether or polyoxyethylene alkyl aryl ether It is preferable to prevent wear of the ball seat by adding a lubricant such as a phosphoric acid diester or a metal salt, ammonium salt, amine salt or alkanolamine salt thereof.
- a lubricant such as a phosphoric acid diester or a metal salt, ammonium salt, amine salt or alkanolamine salt thereof.
- a resin for imparting stickiness and viscosity of handwriting to paper such as acrylic resin, styrene maleic acid copolymer, cellulose derivative, polyvinylpyrrolidone, polyvinyl alcohol, dextrin, etc.
- PH adjusters such as inorganic salts such as sodium carbonate, sodium phosphate and sodium acetate, organic basic compounds such as water-soluble amine compounds, (iii) benzotriazole, tolyltriazole, dicyclohexylammonium nitrite, diisopropylammonium nitrite, saponin (Iv) Caroic acid, sodium salt of 1,2-benzthiazolin-3-one, sodium benzoate, sodium dehydroacetate, potassium sorbate, propyl paraoxybenzoate, 2,3,5,6-tetra Chloro-4- (methyl (Sulfonyl) preservatives or antifungal agents such as pyridine, (v) urea, nonionic surfactants, reduced or non-reduced starch hydrolysates, oligosaccharides such as trehalose, sucrose, cyclodextrin, glucose, dextrin, sorbit, Wetting agents such as mannit, sodium mannit,
- the writing instrument includes a shaft cylinder containing the ink composition and a pen body for deriving the ink composition in the shaft cylinder.
- the pen body include a marking pen body, a ballpoint pen body, and a brush pen body.
- the marking pen body include marking tips such as fiber tips, felt tips, and plastic tips.
- An example of the ballpoint pen body is a ballpoint pen tip.
- a brush pen body a fiber bundling body in which fibers are bundled closely in the longitudinal direction, a plastic porous body having continuous pores, a heat-bonded or resin processed body of synthetic resin fibers, an extrusion molding process of a soft resin or an elastomer The body is mentioned.
- an ink composition is used for a ball-point pen and a marking pen is demonstrated in detail.
- the structure and shape of the ballpoint pen itself are not particularly limited.
- a ballpoint pen tip having a ball attached to the tip of an ink containing tube filled with a shear-thinning ink composition is provided.
- An example is a ballpoint pen in which a ballpoint pen refill that is in communication and in close contact with the ink backflow prevention composition (liquid stopper) is accommodated in the shaft cylinder on the end face of the ink composition.
- a tip formed by holding a ball in a ball holding portion obtained by pressing and deforming the vicinity of the tip of a metal pipe inward from the outer surface, or a ball holding formed by cutting a metal material with a drill or the like A chip formed by holding a ball in the holding part, a chip provided with a resin ball receiving seat inside a metal or plastic chip, or a ball held by the chip is urged forward by a spring body Etc. can be applied.
- the ball is preferably made of cemented carbide, stainless steel, ruby, ceramic, resin, rubber or the like, preferably 0.3 to 2.0 mm, more preferably 0.3 to 1.5 mm, and still more preferably 0.3 to 1.5 mm. A thing about 1.0 mm is applicable.
- a molded body made of a thermoplastic resin such as polyethylene, polypropylene, polyethylene terephthalate, or nylon, or a metal tubular body is used as the ink storage tube for storing the ink composition.
- the ink storage tube and the chip may be connected via a connecting member.
- a ballpoint pen in which a shear-thinning ink composition is filled in a shaft cylinder in which a ballpoint pen tip is mounted directly or via a connecting member, and the ink backflow prevention body composition is in intimate contact with the end surface of the ink composition. It can be illustrated.
- the ballpoint pen may be provided with a cap that covers the ballpoint pen tip, or may be a retractable ballpoint pen that is not provided with a cap.
- the structure and shape of the retractable ballpoint pen are not particularly limited, and the writing tip provided on the ballpoint pen refill is stored in the shaft cylinder in the state exposed to the outside air, and the shaft cylinder opening is opened by the operation of the retracting mechanism. Any shape can be used as long as the writing tip protrudes from the portion.
- the haunting ballpoint pen can be classified into, for example, a knocking ballpoint pen, a rotating ballpoint pen, a sliding ballpoint pen, and the like.
- the knock-type ballpoint pen has a knock portion at the rear end portion of the shaft tube and the side surface of the shaft tube, and a configuration in which the ballpoint pen tip is projected and retracted from the front end opening portion of the shaft tube by pressing the knock portion, or a clip portion provided on the shaft tube.
- the structure which makes a ball-point pen tip protrude and invade from a shaft cylinder front-end opening part by pressing can be illustrated.
- the rotary ballpoint pen has a rotating part at the rear part of the shaft cylinder, and a configuration in which the ballpoint pen tip is projected and retracted from the opening part at the front end of the shaft cylinder by turning the rotating part can be exemplified.
- the slide-type ballpoint pen has a slide part on the side surface of the shaft cylinder, and by operating the slide, the configuration in which the ballpoint pen tip protrudes and appears from the front end opening of the shaft cylinder, or by sliding the clip part provided on the shaft cylinder, A configuration in which the ball-point pen tip is projected and retracted from the front end opening of the shaft cylinder can be exemplified.
- a retractable ballpoint pen is a compound type retractable ballpoint pen that contains a plurality of ballpoint pen refills in a shaft cylinder, and the writing tip of any ballpoint pen refill appears and disappears from the front end opening of the shaft cylinder by the operation of the retractable mechanism. Also good.
- the ink backflow prevention body composition is composed of a non-volatile liquid or a hardly volatile liquid.
- a non-volatile liquid or a hardly volatile liquid.
- petroleum jelly spindle oil, castor oil, olive oil, refined mineral oil, liquid paraffin, polybutene, ⁇ -olefin, ⁇ -olefin oligomer or co-oligomer, dimethyl silicone oil, methylphenyl silicone oil, amino-modified silicone oil, Examples thereof include polyether-modified silicone oil and fatty acid-modified silicone oil, and one or more can be used in combination.
- the non-volatile liquid and / or the hardly volatile liquid is preferably thickened to a suitable viscosity by adding a thickener.
- a thickener silica whose surface has been subjected to hydrophobic treatment, and fine particle silica whose surface has been methylated.
- an ink occlusion body consisting of a fiber bundling body is built in a shaft cylinder, and a capillary gap is formed.
- a marking pen tip made of a processed fiber product is attached to a shaft cylinder directly or via a relay member, and an ink occlusion body of a marking pen in which an ink occlusion body and a tip are connected is impregnated with a cohesive ink composition.
- a marking pen or a marking pen in which a tip and an ink storage tube are arranged through a valve body that is opened by pressing the tip and the ink composition is directly stored in the ink storage tube can be exemplified.
- the chip is a porous member having continuous air holes selected from a range of generally 30 to 70% of a conventional porosity, such as a resin processed body of fibers, a fusion processed body of hot melt fibers, a felt body, and the like.
- a conventional porosity such as a resin processed body of fibers, a fusion processed body of hot melt fibers, a felt body, and the like.
- one end is processed into a shape corresponding to the purpose such as a bullet shape, a rectangular shape, a chisel shape, and the like, and then provided for practical use.
- the ink occlusion body is formed by converging crimped fibers in the longitudinal direction, and is configured to be contained in a covering body such as a plastic cylinder or a film so that the porosity is adjusted in a range of approximately 40 to 90%.
- valve body can be of a general-purpose pumping type from the past, but is preferably set to a spring pressure that can be pressed and released by writing pressure.
- the form of the ballpoint pen and the marking pen is not limited to those described above, and it may be a double-headed writing instrument with a tip of a different form attached or a pen tip for deriving an ink composition of a different color tone. .
- the handwriting obtained by writing on a writing surface using the writing instrument which accommodated the ink composition can be discolored with a heating tool or a cooling tool.
- the heating tool examples include a heating color changing tool equipped with a resistance heating element, a heating color changing tool filled with warm water, and a hair dryer.
- a friction member is used as a means capable of changing color by a simple method. It is done.
- an elastic body such as an elastomer or a plastic foam which is rich in elasticity and can generate frictional heat upon rubbing to generate frictional heat is preferable.
- an elastic body that does not substantially wear during rubbing is preferable.
- the above-mentioned friction member that generates almost no erasing residue is preferred because the erasing residue is generated at the time of friction. Used.
- silicone resin silicone resin, SEBS resin (styrene ethylene butadiene styrene block copolymer), polyester resin or the like is used.
- the friction member can be obtained by combining a writing instrument and a member of an arbitrary shape (friction body) separately to obtain a writing instrument set, but by providing the writing instrument with a friction member, it is excellent in portability.
- the location where the friction member is provided is not particularly limited.
- the cap itself is formed of a friction member
- the shaft tube itself is formed of a friction member, or a clip is provided.
- the clip itself can be formed of a friction member, or the friction member can be provided at the tip end (top) of the cap or the rear end of the shaft cylinder (the portion where the writing tip is not provided).
- the location where the friction member is provided is not particularly limited, but for example, the shaft cylinder itself is formed with a friction member, or when the clip is provided, the clip itself is formed with a friction member, A friction member can be provided in the vicinity of the shaft tube opening, the rear end portion of the shaft tube (the portion where the writing tip portion is not provided) or the knock portion.
- Cooling tools include cooling / changing tools using Peltier elements, cooling / changing tools filled with refrigerants such as cold water and ice pieces, refrigerators and freezers.
- a layered product can be formed by applying or printing a temperature-sensitive color-changing color-memory liquid composition.
- the material of the support is not specified and is all effective, and can be exemplified by paper, synthetic paper, fiber, fabric, synthetic leather, leather, plastic, glass, ceramic material, metal, wood, stone, etc. Not only the shape but also the uneven shape may be used.
- a laminate (printed material) is obtained by providing a reversible thermochromic layer containing a temperature-sensitive color-changing color memory composition on a support.
- the colored layer can be concealed by a reversible thermochromic layer due to a temperature change. Can be further diversified.
- the temperature-sensitive color-changing color memory microcapsule pigment is melt-blended with a thermoplastic resin, a thermosetting resin, a wax, etc., to form a thermosensitive color-changing color memory molding resin in the form of a pellet, powder, or paste. It can also be used as a composition, such as a three-dimensional shaped object, film, sheet, plate, filament, rod, pipe, etc. of any shape by means of general-purpose injection molding, extrusion molding, blow molding, or cast molding A shaped shaped body is obtained.
- thermoplastic resin or wax It is also possible to obtain a pencil lead or crayon by melt blending with a thermoplastic resin or wax.
- light stabilizers examples include ultraviolet absorbers, antioxidants, singlet oxygen quenchers, superoxide anion quenchers, and ozone quenchers.
- the transparent metallic luster pigment examples include natural mica, synthetic mica, glass pieces, alumina, and a pigment obtained by coating the surface of a transparent film piece with a metal oxide such as titanium oxide.
- thermochromic color memory composition examples include thermochromic color memory microcapsule pigment encapsulating the thermosensitive color memory composition, and the ink composition.
- Puzzle toys such as picture books, jigsaw puzzles, building toys, block toys, clay toys, fluid toys, tops, kites, musical instrument toys, cooking toys, gun toys, capture toys, background toys and vehicles, animals, plants, buildings, and food
- toys Clothing T-shirts, trainers, blouses, dresses, swimwear, raincoats, skiwear, and other clothing, footwear such as shoes and shoelaces, handkerchiefs, towels, cloth accessories such as furoshiki, gloves, ties, and hats etc, (3) Indoor decoration carpets, curtains, curtain strings, table racks, rugs, cushions, picture frames, artificial flowers, photo frames, etc
- Examples of the present invention are shown below, but the present invention is not limited thereto.
- a method for producing a temperature-sensitive color-changing color memory composition and a microcapsule pigment containing the composition, a method for measuring the color-change temperature, and hysteresis characteristics in each example will be described.
- the part in an Example represents a mass part.
- thermosensitive color-change color memory composition As component (a), 3- (2-ethoxy-4-diethylaminophenyl) -3- (1-ethyl-2-methylindol-3-yl) -4- Three parts comprising 1 part azaphthalide, 2 parts 2,2-bis (4-hydroxyphenyl) hexafluoropropane as component (b), and 50 parts phenoxyethyl 4-butoxybenzoate (compound 5) as component (c) The components were mixed, heated and dissolved homogeneously to obtain a thermochromic color memory composition. The temperature-sensitive color-changing color memory composition changed its color from blue to colorless.
- the temperature-sensitive color-changing color memory composition was sealed in a transparent glass capillary tube having an inner diameter of 1 mm and a length of 78 mm to a height of about 10 mm from the bottom of the capillary tube to obtain a measurement sample.
- T 1 complete color development temperature
- T 2 color development start temperature
- T 3 decoloration start temperature
- T 4 complete color erase temperature
- T H Tempoture between T 1 and T 2 (T 1 + T 2 ) / 2]
- T G T.sub.3 between T 3 and T 4 (T 3 + T 4 ) / 2]
- ⁇ H Hysteresis width T G -T H ).
- the temperature-sensitive color-changing color memory composition is T 1 : 14 ° C., T 2 : 18 ° C., T 3 : 57 ° C., T 4 : 61 ° C., T H : 16 ° C., T G : 59 ° C., ⁇ H: 43
- the hysteresis characteristic at °C was shown.
- Example 2 is the same method as Example 1 except that the blending amounts of components (a) and (c) and each component of the temperature-sensitive color-change color memory composition are changed to the contents described in the following table. 6 to 6 were prepared, and the color change temperature was measured in the same manner as in Example 1.
- P is 3- (2-ethoxy-4-diethylaminophenyl) -3- (1-ethyl-2-methylindol-3-yl) -4-azaphthalide
- Q is 1,2-benz-6- (N-ethyl-N-isoamylamino) fluorane
- R is 2- (2-chloroanilino) -6-di-n-butylaminofluorane
- S is 2,2-bis (4-hydroxyphenyl) hexafluoropropane.
- thermochromic color memory compositions of Examples 1 to 6 are shown in the following table.
- thermosensitive color-changing color memory microcapsule pigment As component (a), 3- (2-ethoxy-4-diethylaminophenyl) -3- (1-ethyl-2-methylindol-3-yl) -4 1 part azaphthalide, 5 parts 2,2-bis (4-hydroxyphenyl) hexafluoropropane as component (b), 45 parts phenoxyethyl 4-butoxybenzoate (compound 5) and capric acid as component (c)
- a temperature-sensitive color-changing color memory composition composed of 5 parts of cetyl was mixed and uniformly heated and dissolved, and 15 parts of a solution in which 20 parts of an aromatic polyvalent isocyanate prepolymer and 40 parts of ethyl acetate were mixed as a wall film material.
- Preparation of measurement sample 40 parts of the temperature-sensitive color-changing color memory microcapsule pigment, 50 parts of an ethylene-vinyl acetate resin emulsion, 1 part of a leveling agent, 1 part of an antifoaming agent, 0.5 part of a viscosity adjusting agent, and 7 parts of water
- a temperature-sensitive color-changing color memory ink composition was prepared by uniformly dispersing in 5 parts of a water-based ink vehicle. Using the ink composition, a solid pattern was screen-printed on high-quality paper to obtain a measurement sample.
- the temperature-sensitive color-changing color memory microcapsule pigment has T 1 : ⁇ 16 ° C., T 2 : 0 ° C., T 3 : 43 ° C., T 4 : 59 ° C., T H : ⁇ 8 ° C., T G : 51 ° C. ⁇ H: Hysteresis characteristics of 59 ° C. were shown.
- Example 8 The component (a) of the thermochromic color memory composition to be encapsulated in the microcapsule is 2.0 parts of 1,2-benz-6- (N-ethyl-N-isoamylamino) fluorane, and the component (c) is 4 parts.
- -A temperature-sensitive color-changing color memory microcapsule pigment was prepared in the same manner as in Example 7 except that 50 parts of phenoxyethyl butoxybenzoate (Compound 5) and 5 parts of stearyl laurate were used.
- a temperature-sensitive color-change color-memory microcapsule pigment that changes color to an average particle size of 1.8 ⁇ m was obtained.
- the temperature-sensitive color-changing color memory microcapsule pigment has T 1 : ⁇ 18 ° C., T 2 : 0 ° C., T 3 : 36 ° C., T 4 : 56 ° C., T H : ⁇ 9 ° C., T G : 46 ° C. ⁇ H: A hysteresis characteristic of 55 ° C. was exhibited.
- Example 9 Example 7 except that the component (c) of the thermochromic color memory composition to be encapsulated in the microcapsule was changed to 50 parts of phenoxyethyl 4-pentyloxybenzoate (Compound 29) and 5 parts of stearyl caprate.
- a temperature-sensitive color-changing color memory microcapsule pigment was prepared by the same method to obtain a temperature-sensitive color-changing color memory microcapsule pigment that changes color from blue to colorless (average particle size 2.2 ⁇ m).
- the temperature-sensitive color-changing color memory microcapsule pigment has T 1 : ⁇ 23 ° C., T 2 : ⁇ 13 ° C., T 3 : 36 ° C., T 4 : 52 ° C., T H : ⁇ 18 ° C., T G : 44 ° C. , ⁇ H: A hysteresis characteristic of 62 ° C. was exhibited.
- thermosensitive color-changing color-memory microcapsule pigment prepared in Example 7 previously cooled to ⁇ 16 ° C. or lower to develop a blue color
- succinoglycan saliva thinning agent
- sugar mixture [manufactured by Sanwa Starch Co., Ltd., trade name: Sandeck 70] 3.0 parts, phosphate ester surfactant 0.5 part, antifungal agent 0.1 part, triethanolamine 1.0 Part of water and 68.1 parts of water were uniformly dispersed in a vehicle to prepare ink composition A.
- the ink composition A is sucked and filled into an ink composition containing tube made of polypropylene pipe, and connected to a ballpoint pen tip holding a 0.5 mm stainless steel ball at the tip via a connecting member (resin holder). I let you.
- a viscoelastic ink backflow preventive composition liquid stopper mainly composed of polybutene was filled from the rear end of the polypropylene pipe to obtain a ballpoint pen refill.
- the ballpoint pen refill was incorporated into a shaft tube to obtain a writing instrument (an in / out type ballpoint pen).
- the writing instrument is housed in the shaft cylinder in a state in which the tip provided on the ballpoint pen refill is exposed to the outside air, and the shaft is driven by the operation of a clip-shaped protrusion / displacement mechanism (slide mechanism) provided on the side surface of the shaft cylinder.
- the tip protrudes from the opening at the front end of the cylinder.
- a friction member made of SEBS resin is provided at the rear end portion of the shaft cylinder.
- a blue character (handwriting) was formed by writing on the paper surface with the tip of the ball-point pen tip protruded from the front end opening of the shaft cylinder by the operation of the retracting mechanism.
- thermosensitive color-changing color-memory microcapsule pigment prepared in Example 7 previously cooled to -16 ° C. or lower and colored blue
- xanthan gum shear thinning agent
- Aqueous ink vehicle comprising 10.0 parts urea, 10 parts glycerin, 0.6 parts nonionic surfactant, 0.1 part denatured silicone-containing antifoaming agent, 0.2 part antifungal agent, and 51.77 parts water.
- the ink composition B was sucked and filled into a polypropylene pipe and connected to a ballpoint pen tip holding a 0.5 mm stainless steel ball at the tip via a connecting member (resin holder).
- a viscoelastic ink backflow preventive composition (liquid stopper) mainly composed of polybutene is filled, and a tail plug is fitted to the rear part of the pipe.
- the rear barrel was assembled and a cap was fitted to obtain a writing instrument (ballpoint pen).
- a friction member made of SEBS resin is provided at the rear portion of the rear shaft cylinder. A blue character (handwriting) was formed by writing on the paper using the writing instrument.
- the handwriting had a blue color at room temperature (25 ° C.), and when the characters were scraped using a friction member, the characters disappeared and became colorless, and this state could be maintained at room temperature.
- the paper surface after erasing was placed in a freezer and cooled to a temperature of ⁇ 16 ° C. or lower, the characters turned blue again, and the behavior could be reproduced repeatedly.
- Application example 3 25 parts of temperature-sensitive color-changing color-memory microcapsule pigment prepared in Example 8 (previously cooled to -18 ° C. or lower to develop a pink color), 0.5 parts of hydroxyethyl cellulose, comb-type polymer dispersant [Nippon Lubrizol Co., Ltd., trade name: Solsperse 43000] 0.2 parts, organic nitrogen sulfur compound [Hokuside Chemical Co., Ltd., trade name: Hokuside R-150, 2-methyl-4-isothiazoline-3 -One and a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one] 1.0 part, 0.5 part polyvinyl alcohol, 25.0 parts glycerin, 0.02 part defoamer, and 47 water .78 parts was mixed to obtain an ink composition C.
- Preparation of filling-type writing instrument Ink composition C impregnated with polyester resin sliver covered with synthetic resin film, impregnated with ink composition C, accommodated in a shaft tube made of polypropylene resin, and tip of shaft tube through connecting member
- a polyester fiber resin processing pen body (cannonball type) was assembled in a connected state, and a cap was attached to obtain a writing instrument (marking pen).
- a friction member made of SEBS resin is provided at the rear end portion of the shaft cylinder.
- thermosensitive color-changing color memory microcapsule pigment and 1.5 parts of the non-thermochromic fluorescent pink pigment prepared in Example 7 were added to 12.5 parts of a vinyl chloride-vinyl acetate copolymer resin and 38 parts of xylene.
- a coating material D was prepared by dispersing in an oil-based ink vehicle comprising 3 parts, 45 parts of butyl acetate, and 0.2 part of a viscosity modifier. The paint D is cooled to a temperature of ⁇ 16 ° C. or lower to change its color to purple, and then sprayed on the plug portion (white) of a household electric cord to provide a reversible thermochromic layer, thereby providing a temperature-sensitive color change color memory property. Got a plug.
- the plug was purple at room temperature (25 ° C.), but became pink at a temperature of 59 ° C. or higher by heating. When cooled from this discolored state, it turned purple again at a temperature of -16 ° C or lower.
- the temperature-sensitive color-change color memory plug becomes pink at a temperature of 59 ° C. or higher, the color change state of the pink color can be maintained unless it is cooled to a temperature of ⁇ 16 ° C. or lower.
- the temperature history when reaching a high temperature range of 59 ° C. or higher was detected visually.
- thermosensitive color-changing color memory microcapsule pigment prepared in Example 7 60 parts of acrylic resin emulsion (solid content 45%), viscosity Ink composition E was prepared by uniformly dispersing in a water-based ink vehicle consisting of 1 part of a modifier, 0.2 part of antifoaming agent, and 8.8 parts of water.
- a number of star patterns were screen-printed on a white T-shirt (made of cotton) using a 100-mesh screen using the ink composition E to obtain a temperature-sensitive color-change color memory T-shirt.
- the T-shirt has many blue star patterns visible at room temperature (25 ° C) and does not change at body temperature or ambient temperature.
- the star pattern becomes colorless and when cooled to -16 ° C or lower again A blue star pattern was visible.
- a part of the T-shirt's star pattern is erased by heating with an iron or the like to erase only an arbitrary star, or a letter or pattern is formed with an arbitrary star, and the T-shirt's pattern is changed arbitrarily. I was able to.
- the discolored state can be maintained at room temperature, the whole is heated to 59 ° C or higher to erase the entire star pattern, and then cooled to -16 ° C or lower to develop the entire star pattern. And an arbitrary pattern could be formed again as described above.
- thermosensitive color-changing color memory microcapsule pigment prepared in Example 8 1 part of dispersant, 0.1 part of non-thermochromic blue pigment, and 93.9 parts of polypropylene homopolymer were 180 ° C. using an extruder.
- the pellet F was used to mold a cage-shaped figurine with an injection molding machine. After cooling to ⁇ 18 ° C. or lower, the figurine was purple at room temperature (25 ° C.), but became blue at a temperature of 56 ° C. or higher by heating. Cooling from this state turned purple again at a temperature of -18 ° C or lower.
- Application example 7 20 parts of the temperature-sensitive color-changing color-memory microcapsule pigment prepared in Example 9 (previously cooled to ⁇ 23 ° C. or less to develop a blue color) were added to an acrylic resin emulsion (solid content 40%) 78.0.
- An ink composition G was prepared by uniformly dispersing in a water-based ink vehicle consisting of 2.0 parts by weight and an antifoaming agent.
- a counterfeit discrimination mark was printed by gravure printing using the ink composition G on a gift certificate printed on a high-quality paper using a non-thermochromic ink. The counterfeit discrimination mark is blue at room temperature (25 ° C.) and does not change color at body temperature or environmental temperature, but becomes colorless when heated to 52 ° C.
- counterfeit discrimination mark of the gift certificate is blue and does not change color at room temperature, it cannot be identified as a counterfeit discrimination mark, but has a forgery prevention function because it becomes colorless when heated to 52 ° C or higher. It was.
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Abstract
Description
前記感温変色性色彩記憶性材料は、従来の可逆熱変色性材料のように変色温度を境にその前後で変色し、変色前後の両状態のうち常温域では特定の一方の状態しか存在せず、もう一方の状態はその状態が発現するのに要する熱または冷熱が適用されている間は維持され、熱または冷熱の適用がなくなれば常温域で呈する状態に戻るタイプと比較して、変色温度より低温側の色と高温側の色のいずれかを常温域において選択的に保持できるうえ、必要に応じて熱又は冷熱を適用することにより互変的に保持させることができ、感熱記録材料、玩具、印刷分野等、多様な分野に適用されている。
本発明は、前記色彩記憶性効果を発現させる反応媒体となる化合物について追求し、反応媒体の選択の自由度を高め、この種の感温変色性色彩記憶性材料の利用度を更に高めることを目的とするものである。
本発明は、電子供与性呈色性有機化合物からなる成分(a)と、電子受容性化合物からなる成分(b)と、前記成分(a)と前記成分(b)との呈色反応をコントロールする反応媒体として、下記式(1)で示されるエステル化合物からなる成分(c)と、を含む感温変色性色彩記憶性組成物に関する。
更には、前記感温変色性色彩記憶性組成物を内包してなる感温変色性色彩記憶性マイクロカプセル顔料を要件とする。
図1において、縦軸に色濃度、横軸に温度が表されている。温度変化による色濃度は矢印に沿って変化する。ここで、Aは完全消色状態に達する温度T4(以下、完全消色温度と称す)における濃度を示す点であり、Bは完全発色状態を保持できる温度T3(以下、消色開始温度と称す)における濃度を示す点であり、Cは完全消色状態を保持できる温度T2(以下、発色開始温度と称す)における濃度を示す点であり、Dは完全発色状態に達する温度T1(以下、完全発色温度と称す)における濃度を示す点である。
変色温度領域は前記T1とT4間の温度域であり、T2とT3の間の温度域が実質変色温度域、即ち、着色状態或いは消色状態のいずれかの状態を保持できる温度域である。
更に、変色前後の両状態のうち常温域では特定の一方の状態のみ存在させるためには、完全消色温度(T4)が40℃以上であることが好ましく、50℃以上であることがより好ましく、60℃以上であることがさらに好ましい。発色開始温度(T2)は0℃以下であることが好ましく、-5℃以下であることがより好ましく、-10℃以下であることがさらに好ましい。
又、各成分は各々2種以上を組み合わせて用いてもよく、機能に支障のない範囲で酸化防止剤、紫外線吸収剤、赤外線吸収剤、溶解助剤等を添加することができる。
本発明の成分(a)、即ち電子供与性呈色性有機化合物としては、フタリド化合物、フルオラン化合物、スチリノキノリン化合物、ジアザローダミンラクトン化合物、ピリジン化合物、キナゾリン化合物、ビスキナゾリン化合物等が挙げられ、これらのうちフタリド化合物およびフルオラン化合物が好ましい。フタリド化合物としては、例えばジフェニルメタンフタリド化合物、フェニルインドリルフタリド化合物、インドリルフタリド化合物、ジフェニルメタンアザフタリド化合物、フェニルインドリルアザフタリド化合物、およびそれらの誘導体などが挙げられ、これらの中でも、フェニルインドリルアザフタリド化合物、ならびにそれらの誘導体が好ましい。また、フルオラン化合物としては、例えば、アミノフルオラン化合物、アルコキシフルオラン化合物、およびそれらの誘導体が挙げられる。
3,3-ビス(p-ジメチルアミノフェニル)-6-ジメチルアミノフタリド、
3-(4-ジエチルアミノフェニル)-3-(1-エチル-2-メチルインドール-3-イル)フタリド、
3,3-ビス(1-n-ブチル-2-メチルインドール-3-イル)フタリド、
3,3-ビス(2-エトキシ-4-ジエチルアミノフェニル)-4-アザフタリド、
3-〔2-エトキシ-4-(N-エチルアニリノ)フェニル〕-3-(1-エチル-2-メチルインドール-3-イル)-4-アザフタリド、
3,6-ジフェニルアミノフルオラン、
3,6-ジメトキシフルオラン、
3,6-ジ-n-ブトキシフルオラン、
2-メチル-6-(N-エチル-N-p-トリルアミノ)フルオラン、
3-クロロ-6-シクロヘキシルアミノフルオラン、
2-メチル-6-シクロヘキシルアミノフルオラン、
2-(2-クロロアミノ)-6-ジブチルアミノフルオラン、
2-(2-クロロアニリノ)-6-ジ-n-ブチルアミノフルオラン、
2-(3-トリフルオロメチルアニリノ)-6-ジエチルアミノフルオラン、
2-(N-メチルアニリノ)-6-(N-エチル-N-p-トリルアミノ)フルオラン、
1,3-ジメチル-6-ジエチルアミノフルオラン、
2-クロロ-3-メチル-6-ジエチルアミノフルオラン、
2-アニリノ-3-メチル-6-ジエチルアミノフルオラン、
2-アニリノ-3-メトキシ-6-ジエチルアミノフルオラン、
2-アニリノ-3-メチル-6-ジ-n-ブチルアミノフルオラン、
2-アニリノ-3-メトキシ-6-ジ-n-ブチルアミノフルオラン、
2-キシリジノ-3-メチル-6-ジエチルアミノフルオラン、
1,2-ベンツ-6-ジエチルアミノフルオラン、
1,2-ベンツ-6-(N-エチル-N-イソブチルアミノ)フルオラン、
1,2-ベンツ-6-(N-エチル-N-イソアミルアミノ)フルオラン、
2-(3-メトキシ-4-ドデコキシスチリル)キノリン、
スピロ〔5H-(1)ベンゾピラノ(2,3-d)ピリミジン-5,1′(3′H)イソベンゾフラン〕-3′-オン、
2-(ジエチルアミノ)-8-(ジエチルアミノ)-4-メチル-スピロ〔5H-(1)ベンゾピラノ(2,3-g)ピリミジン-5,1′(3′H)イソベンゾフラン〕-3-オン、
2-(ジ-n-ブチルアミノ)-8-(ジ-n-ブチルアミノ)-4-メチル-スピロ〔5H-(1)ベンゾピラノ(2,3-g)ピリミジン-5,1′(3′H)イソベンゾフラン〕-3-オン、
2-(ジ-n-ブチルアミノ)-8-(ジエチルアミノ)-4-メチル-スピロ〔5H-(1)ベンゾピラノ(2,3-g)ピリミジン-5,1′(3′H)イソベンゾフラン〕-3-オン、
2-(ジ-n-ブチルアミノ)-8-(N-エチル-N-i-アミルアミノ)-4-メチル-スピロ〔5H-(1)ベンゾピラノ(2,3-g)ピリミジン-5,1′(3′H)イソベンゾフラン〕-3-オン、
2-(ジブチルアミノ)-8-(ジペンチルアミノ)-4-メチル-スピロ[5H-(1)ベンゾピラノ(2,3-g)ピリミジン-5,1′(3′H)-イソベンゾフラン]-3-オン、
3-(2-メトキシ-4-ジメチルアミノフェニル)-3-(1-ブチル-2-メチルインドール-3-イル)-4,5,6,7-テトラクロロフタリド、
3-(2-エトキシ-4-ジエチルアミノフェニル)-3-(1-エチル-2-メチルインドール-3-イル)-4,5,6,7-テトラクロロフタリド、
3-(2-エトキシ-4-ジエチルアミノフェニル)-3-(1-ペンチル-2-メチルインドール-3-イル)-4,5,6,7-テトラクロロフタリド、
4,5,6,7-テトラクロロ-3-[4-(ジメチルアミノ)-2-メチルフェニル]-3-(1-エチル-2-メチル-1H-インドール-3-イル)-1(3H)-イソベンゾフラノン、
3′,6′-ビス〔フェニル(2-メチルフェニル)アミノ〕-スピロ[イソベンゾフラン-1(3H),9′-〔9H〕キサンテン]-3-オン、
3′,6′-ビス〔フェニル(3-メチルフェニル)アミノ〕-スピロ[イソベンゾフラン-1(3H),9′-〔9H〕キサンテン]-3-オン、
3′,6′-ビス〔フェニル(3-エチルフェニル)アミノ〕-スピロ[イソベンゾフラン-1(3H),9′-〔9H〕キサンテン]-3-オン、
4-[2,6-ビス(2-エトキシフェニル)-4-ピリジニル]-N,N-ジメチルベンゼンアミン、
2-(4′-ジメチルアミノフェニル)-4-メトキシ-キナゾリン、
4,4′-(エチレンジオキシ)-ビス〔2-(4-ジエチルアミノフェニル)キナゾリン〕
フェノール、o-クレゾール、ターシャリーブチルカテコール、ノニルフェノール、n-オクチルフェノール、n-ドデシルフェノール、n-ステアリルフェノール、p-クロロフェノール、p-ブロモフェノール、o-フェニルフェノール、p-ヒドロキシ安息香酸n-ブチル、p-ヒドロキシ安息香酸n-オクチル、レゾルシン、没食子酸ドデシル、4,4-ジヒドロキシジフェニルスルホン、ビス(4-ヒドロキシフェニル)スルフィド、1,1-ビス(4-ヒドロキシフェニル)エタン、1,1-ビス(4-ヒドロキシフェニル)プロパン、1,1-ビス(4-ヒドロキシフェニル)n-ブタン、1,1-ビス(4-ヒドロキシフェニル)n-ペンタン、1,1-ビス(4-ヒドロキシフェニル)n-ヘキサン、1,1-ビス(4-ヒドロキシフェニル)n-ヘプタン、1,1-ビス(4-ヒドロキシフェニル)n-オクタン、1,1-ビス(4-ヒドロキシフェニル)n-ノナン、1,1-ビス(4-ヒドロキシフェニル)n-デカン、1,1-ビス(4-ヒドロキシフェニル)n-ドデカン、1,1-ビス(4-ヒドロキシフェニル)-2-メチルプロパン、1,1-ビス(4-ヒドロキシフェニル)-3-メチルブタン、1,1-ビス(4-ヒドロキシフェニル)-3-メチルペンタン、1,1-ビス(4-ヒドロキシフェニル)-2,3-ジメチルペンタン、1,1-ビス(4-ヒドロキシフェニル)-2-エチルブタン、1,1-ビス(4-ヒドロキシフェニル)-2-エチルヘキサン、1,1-ビス(4-ヒドロキシフェニル)-3,7-ジメチルオクタン、1-フェニル-1,1-ビス(4-ヒドロキシフェニル)エタン、2,2-ビス(4-ヒドロキシフェニル)プロパン、2,2-ビス(4-ヒドロキシフェニル)n-ブタン、2,2-ビス(4-ヒドロキシフェニル)n-ペンタン、2,2-ビス(4-ヒドロキシフェニル)n-ヘキサン、2,2-ビス(4-ヒドロキシフェニル)n-ペプタン、2,2-ビス(4-ヒドロキシフェニル)n-オクタン、2,2-ビス(4-ヒドロキシフェニル)n-ノナン、2,2-ビス(4-ヒドロキシフェニル)n-デカン、2,2-ビス(4-ヒドロキシフェニル)n-ドデカン、2,2-ビス(4-ヒドロキシフェニル)エチルプロピオネート、2,2-ビス(4-ヒドロキシフェニル)-4-メチルペンタン、2,2-ビス(4-ヒドロキシフェニル)-4-メチルヘキサン、2,2-ビス(4-ヒドロキシフェニル)ヘキサフルオロプロパン、2,2-ビス(4-ヒドロキシ-3-メチルフェニル)プロパン
Xは水素原子、炭素数1乃至3のアルキル基、炭素数1又は2のアルコキシ基、ハロゲン原子のいずれかを示し、好ましくは水素原子、メチル基、メトキシ基のいずれかを示す。
Yは水素原子、メチル基のいずれかを示し、好ましくは水素原子を示す。
Zは水素原子、炭素数1乃至4のアルキル基、炭素数1又は2のアルコキシ基、ハロゲン原子のいずれかを示し、好ましくは、水素原子、メチル基、メトキシ基のいずれかを示し、より好ましくは、水素原子を示す。
なお、平均粒子径、粒度分布の測定は、例えばレーザ回折/散乱式粒子径分布測定装置〔(株)堀場製作所製;LA-300〕を用いて測定し、その数値を基に平均粒子径(メジアン径)を体積基準で算出することにより決定することができる。
マイクロカプセル顔料の平均粒子径が50μm以下であることにより、インキ、塗料、或いは熱可塑性樹脂中へのブレンドに際して、分散安定性や加工適性を維持することができる。
また、平均粒子径が0.1μm以上であることにより、高濃度の発色性を示すことができる。
インキ組成物をボールペンに充填する場合、ボールペン自体の構造、形状は特に限定されるものではなく、例えば、剪断減粘性インキ組成物を充填したインキ収容管の先端部にボールを装着したボールペンチップが連通しており、インキ組成物の端面にはインキ逆流防止体組成物(液栓)が密接しているボールペンレフィルを軸筒内に収容したボールペンを例示できる。
ボールペンチップとして、金属製のパイプの先端近傍を外面より内方に押圧変形させたボール抱持部にボールを抱持してなるチップ、或いは、金属材料をドリル等による切削加工により形成したボール抱持部にボールを抱持してなるチップ、金属又はプラスチック製チップ内部に樹脂製のボール受け座を設けたチップ、或いは、前記チップに抱持するボールをバネ体により前方に付勢させたもの等を適用できる。
具体的には、ワセリン、スピンドル油、ヒマシ油、オリーブ油、精製鉱油、流動パラフィン、ポリブテン、α-オレフィン、α-オレフィンのオリゴマーまたはコオリゴマー、ジメチルシリコーンオイル、メチルフェニルシリコーンオイル、アミノ変性シリコーンオイル、ポリエーテル変性シリコーンオイル、脂肪酸変性シリコーンオイル等があげられ、一種又は二種以上を併用することもできる。
更に、液状のインキ逆流防止体組成物と、固体のインキ逆流防止体を併用することもできる。
(1)玩具類
人形又は動物形象玩具、人形又は動物形象玩具用毛髪、人形の家や家具、衣類、帽子、鞄、および靴等の人形用付属品、アクセサリー玩具、ぬいぐるみ、描画玩具、玩具用絵本、ジグソーパズル等のパズル玩具、積木玩具、ブロック玩具、粘土玩具、流動玩具、こま、凧、楽器玩具、料理玩具、鉄砲玩具、捕獲玩具、背景玩具および乗物、動物、植物、建築物、および食品等を模した玩具等、
(2)衣類
Tシャツ、トレーナー、ブラウス、ドレス、水着、レインコート、およびスキーウェア等の被服、靴や靴紐等の履物、ハンカチ、タオル、およびふろしき等の布製身の回り品、手袋、ネクタイ、帽子等、
(3)屋内装飾品
絨毯、カーテン、カーテン紐、テーブル掛け、敷物、クッション、額縁、造花、写真立て等、
(4)家具
布団、枕、マットレス等の寝具、照明器具および冷暖房器具等、
(5)装飾品
指輪、腕輪、ティアラ、イヤリング、髪止め、付け爪、リボン、およびスカーフ等時計、眼鏡等、
(6)文房具類
筆記具、スタンプ具、消しゴム、下敷き、定規、粘着テープ等、
(7)日用品
口紅、アイシャドー、マニキュア、染毛剤、付け爪、付け爪用塗料等の化粧品、歯ブラシ等、
(8)台所用品
コップ、皿、箸、スプーン、フォーク、鍋、フライパン等、
(9)その他
カレンダー、ラベル、カード、記録材、および偽造防止用の各種印刷物、絵本等の書籍、鞄、包装用容器、刺繍糸、運動用具、釣り具、コースター、楽器、カイロ、蓄冷剤、財布等の袋物、傘、乗物、建造物、温度検知用インジケーター、および教習具等。
各実施例における感温変色性色彩記憶性組成物及びそれを内包したマイクロカプセル顔料の製造方法、変色温度の測定方法、ヒステリシス特性について説明する。
なお、実施例中の部は質量部を表す。
実施例1
感温変色性色彩記憶性組成物の調製方法
成分(a)として、3-(2-エトキシ-4-ジエチルアミノフェニル)-3-(1-エチル-2-メチルインドール-3-イル)-4-アザフタリド1部、成分(b)として、2,2-ビス(4-ヒドロキシフェニル)ヘキサフルオロプロパン2部、及び成分(c)として、4-ブトキシ安息香酸フェノキシエチル(化合物5)50部からなる三成分を混合し、加温して均質に溶解して感温変色性色彩記憶性組成物を得た。
前記感温変色性色彩記憶性組成物は青色から無色に変色するものであった。
前記感温変色性色彩記憶性組成物を内径1mm、長さ78mmの透明ガラス製毛細管に、毛細管底部から約10mmの高さまで封入し、測定試料を得た。
前記測定試料の感温変色性色彩記憶性組成物を封入した部分全体を透明熱媒体の中に浸漬し、透明熱媒体の温度を変化させながら、感温変色性色彩記憶性組成物の変色状態を目視で観察して、T1(完全発色温度)、T2(発色開始温度)、T3(消色開始温度)、T4(完全消色温度)を測定し、TH〔T1とT2の中間の温度(T1+T2)/2〕、TG〔T3とT4の中間の温度(T3+T4)/2〕、ΔH(ヒステリシス幅TG-TH)を求めた。
前記感温変色性色彩記憶性組成物はT1:14℃、T2:18℃、T3:57℃、T4:61℃、TH:16℃、TG:59℃、ΔH:43℃のヒステリシス特性を示した。
感温変色性色彩記憶性組成物の成分(a)、成分(c)と各成分の配合量を、以下の表に記載した内容に変更した以外は実施例1と同一方法で、実施例2~6の感温変色性色彩記憶性組成物を調製し、実施例1と同様にして変色温度を測定した。
Pは3-(2-エトキシ-4-ジエチルアミノフェニル)-3-(1-エチル-2-メチルインドール-3-イル)-4-アザフタリドであり、
Qは1,2-ベンツ-6-(N-エチル-N-イソアミルアミノ)フルオランであり、
Rは2-(2-クロロアニリノ)-6-ジ-n-ブチルアミノフルオランであり、
Sは2,2-ビス(4-ヒドロキシフェニル)ヘキサフルオロプロパンである。
感温変色性色彩記憶性マイクロカプセル顔料の調製方法
成分(a)として、3-(2-エトキシ-4-ジエチルアミノフェニル)-3-(1-エチル-2-メチルインドール-3-イル)-4-アザフタリド1部、成分(b)として、2,2-ビス(4-ヒドロキシフェニル)ヘキサフルオロプロパン5部、成分(c)として、4-ブトキシ安息香酸フェノキシエチル(化合物5)45部及びカプリン酸セチル5部からなる感温変色性色彩記憶性組成物を混合し、均一に加温溶解し、さらに壁膜材料として芳香族多価イソシアネートプレポリマー20部、酢酸エチル40部を混合した溶液を15%ゼラチン水溶液100部中に投入し、微小滴になるように乳化分散させた。前記分散液を70℃で約1時間攪拌を続けた後、水溶性アミン化合物(三菱化学株式会社製、商品名:jERキュアU、エポキシ樹脂のアミン付加物)2部を水23部に溶解させた水溶液を攪拌しながら徐々に添加し、さらに液温を90℃に保って約3時間攪拌を続けて感温変色性色彩記憶性マイクロカプセル顔料の懸濁液を得た。
前記マイクロカプセル顔料の懸濁液から、遠心分離により感温変色性色彩記憶性マイクロカプセル顔料を単離し、青色から無色に変色する感温変色性色彩記憶性マイクロカプセル顔料を得た(平均粒子径2.0μm)。
前記感温変色性色彩記憶性マイクロカプセル顔料40部を、エチレン-酢酸ビニル樹脂エマルジョン50部、レベリング剤1部、消泡剤1部、粘度調整剤0.5部、及び水7.5部からなる水性インキビヒクルに均一に分散させて感温変色性色彩記憶性インキ組成物を調製した。
前記インキ組成物を用いて上質紙にベタ柄をスクリーン印刷して測定試料を得た。
前記測定試料を色差計(TC-3600型色差計、東京電色株式会社製)の測定部分にセットし、試料部分を2℃/分の速度で昇温、降温させ、各温度における色濃度として明度値を測定し、色濃度-温度曲線を作成した。前記色濃度-温度曲線よりT1、T2、T3、T4、TH〔T1とT2の中間の温度(T1+T2)/2〕、TG〔T3とT4の中間の温度(T3+T4)/2〕、ΔH(ヒステリシス幅TG-TH)を求めた。
前記感温変色性色彩記憶性マイクロカプセル顔料はT1:-16℃、T2:0℃、T3:43℃、T4:59℃、TH:-8℃、TG:51℃、ΔH:59℃のヒステリシス特性を示した。
マイクロカプセルに内包させる感温変色性色彩記憶性組成物の(a)成分を1,2-ベンツ-6-(N-エチル-N-イソアミルアミノ)フルオラン2.0部、(c)成分を4-ブトキシ安息香酸フェノキシエチル(化合物5)50部及びラウリン酸ステアリル5部に変更した以外は、実施例7と同一の方法により感温変色性色彩記憶性マイクロカプセル顔料を調製し、ピンク色から無色に変色する感温変色性色彩記憶性マイクロカプセル顔料を得た(平均粒子径1.8μm)。
前記感温変色性色彩記憶性マイクロカプセル顔料はT1:-18℃、T2:0℃、T3:36℃、T4:56℃、TH:-9℃、TG:46℃、ΔH:55℃のヒステリシス特性を示した。
マイクロカプセルに内包させる感温変色性色彩記憶性組成物の(c)成分を4-ペンチルオキシ安息香酸フェノキシエチル(化合物29)50部及びカプリン酸ステアリル5部に変更した以外は、実施例7と同一の方法により感温変色性色彩記憶性マイクロカプセル顔料を調製し、青色から無色に変色する感温変色性色彩記憶性マイクロカプセル顔料を得た(平均粒子径2.2μm)。
前記感温変色性色彩記憶性マイクロカプセル顔料はT1:-23℃、T2:-13℃、T3:36℃、T4:52℃、TH:-18℃、TG:44℃、ΔH:62℃のヒステリシス特性を示した。
実施例7で調製した感温変色性色彩記憶性マイクロカプセル顔料27部(予め-16℃以下に冷却して青色に発色させたもの)を、サクシノグリカン(剪断減粘性付与剤)0.3部、糖混合物〔三和澱粉工業(株)製、商品名:サンデック70〕3.0部、リン酸エステル界面活性剤0.5部、防黴剤0.1部、トリエタノールアミン1.0部、及び水68.1部ビヒクルに均一に分散させてインキ組成物Aを調製した。
前記インキ組成物Aをポリプロピレン製パイプからなるインキ組成物収容管に吸引充填し、接続部材(樹脂製ホルダー)を介して0.5mmステンレス鋼ボールを先端に抱持したボールペンチップと連結させた。
次いで、前記ポリプロピレン製パイプの後端より、ポリブテンを主成分とする粘弾性を有するインキ逆流防止体組成物(液栓)を充填してボールペンレフィルを得た。
前記ボールペンレフィルを、軸筒内に組み込み、筆記具(出没式ボールペン)を得た。
なお、前記筆記具は、ボールペンレフィルに設けられたチップが外気に晒された状態で軸筒内に収納されており、軸筒側面に設けられたクリップ形状の出没機構(スライド機構)の作動によって軸筒前端開口部からチップが突出する構造である。
なお、軸筒後端部には、SEBS樹脂製の摩擦部材を設けてなる。
出没機構の作動により軸筒前端開口部からボールペンチップの先端を出没させた状態で紙面に筆記して青色の文字(筆跡)を形成した。
前記筆跡は、軸筒後端部に設けたSEBS樹脂製の摩擦部材を用いて摩擦すると、該文字は消色して無色となり、この状態は室温下で維持することができた。
なお、消色後の前記紙面を冷凍庫に入れて-16℃以下の温度に冷却すると、再び文字が青色になる変色挙動を示し、前記挙動は繰り返し再現することができた。
実施例7で調製した感温変色性色彩記憶性マイクロカプセル顔料27部(予め-16℃以下に冷却して青色に発色させたもの)を、キサンタンガム(剪断減粘性付与剤)0.33部、尿素10.0部、グリセリン10部、ノニオン性界面活性剤0.6部、変性シリコーン含有消泡剤0.1部、防黴剤0.2部、及び水51.77部からなる水性インキビヒクルに均一に分散させてインキ組成物Bを調製した。
前記インキ組成物Bをポリプロピレン製パイプに吸引充填し、接続部材(樹脂製ホルダー)を介して0.5mmステンレス鋼ボールを先端に抱持したボールペンチップと連結させた。
次いで、前記ポリプロピレン製パイプの後端より、ポリブテンを主成分とする粘弾性を有するインキ逆流防止体組成物(液栓)を充填し、更に尾栓をパイプの後部に嵌合させ、先軸筒、後軸筒を組み付け、キャップを嵌めて筆記具(ボールペン)を得た。
なお、前記後軸筒後部には、SEBS樹脂製の摩擦部材を設けてなる。
前記筆記具を用いて紙面に筆記して青色の文字(筆跡)を形成した。
前記筆跡は、室温(25℃)では青色を呈しており、摩擦部材を用いて文字を擦過すると、該文字は消色して無色となり、この状態は室温下で維持することができた。
なお、消色後の前記紙面を冷凍庫に入れて-16℃以下の温度に冷却すると、再び文字が青色になる変色挙動を示し、前記挙動は繰り返し再現することができた。
実施例8で調製した感温変色性色彩記憶性マイクロカプセル顔料25部(予め-18℃以下に冷却してピンク色に発色させたもの)、ヒドロキシエチルセルロース0.5部、櫛型高分子分散剤〔日本ルーブリゾール(株)製、商品名:ソルスパース43000〕0.2部、有機窒素硫黄化合物〔北興化学工業(株)製、商品名:ホクサイドR-150、2-メチル-4-イソチアゾリン-3-オンと5-クロロ-2-メチル-4-イソチアゾリン-3-オンの混合物〕1.0部、ポリビニルアルコール0.5部、グリセリン25.0部、消泡剤0.02部、及び水47.78部を混合してインキ組成物Cを得た。
ポリエステルスライバーを合成樹脂フィルムで被覆したインキ組成物吸蔵体内に前記インキ組成物Cを含浸させ、ポリプロピレン樹脂からなる軸筒内に収容し、接続部材を介して軸筒先端部にポリエステル繊維の樹脂加工ペン体(砲弾型)と接続状態に組み立て、キャップを装着して筆記具(マーキングペン)を得た。
前記軸筒後端部には、SEBS樹脂製の摩擦部材を設けてなる。
前記筆跡は、室温(25℃)ではピンク色を呈しており、摩擦部材を用いて文字を擦過すると、該文字は消色して無色となり、この状態は室温下で維持することができた。
なお、消色後の前記紙面を冷凍庫に入れて-18℃以下の温度に冷却すると、再び文字がピンク色になる変色挙動を示し、前記挙動は繰り返し再現することができた。
実施例7で調製した感温変色性色彩記憶性マイクロカプセル顔料2.5部及び非熱変色性蛍光ピンク色顔料1.5部を、塩化ビニル-酢酸ビニル共重合樹脂12.5部、キシレン38.3部、酢酸ブチル45部、及び粘度調整剤0.2部からなる油性インキビヒクルに分散させて塗料Dを調製した。
前記塗料Dを-16℃以下の温度に冷却して紫色に変色させた後、家庭用電気コードのプラグ部分(白色)にスプレー塗装して可逆熱変色層を設け、感温変色性色彩記憶性プラグを得た。
前記プラグは室温(25℃)で紫色を呈しているが、加温により59℃以上の温度でピンク色となった。この変色状態から冷却すると、-16℃以下の温度で再び紫色となった。
前記感温変色性色彩記憶性プラグは、59℃以上の温度でピンク色になると-16℃以下の温度に冷却されない限りピンク色の変色状態を保持することができるため、プラグが異常過熱状態となり、59℃以上の高温域に達した場合の温度履歴を目視により検知できた。
実施例7で調製した感温変色性色彩記憶性マイクロカプセル顔料(予め-16℃以下に冷却して青色に発色させたもの)30部をアクリル性樹脂エマルジョン(固形分45%)60部、粘度調整剤1部、消泡剤0.2部、及び水8.8部からなる水性インキビヒクルに均一に分散させてインキ組成物Eを調製した。
前記インキ組成物Eを用いて白地のTシャツ(綿製)に、100メッシュのスクリーン版で多数の星のパターンをスクリーン印刷して感温変色性色彩記憶性Tシャツを得た。
前記Tシャツは室温(25℃)では多数の青色の星柄が視認され、体温や環境温度では変化しないが、59℃以上に加熱すると星柄部分が無色となり、-16℃以下に冷却すると再び青色の星柄が視認された。
前記Tシャツの星柄の一部をアイロン等による加温で消色させて、任意の星のみを消色させたり、任意の星で文字やパターンを形成し、Tシャツの柄を任意に変化させることができた。
また、その変色状態を室温温度域で保持させることができ、全体を59℃以上に加温して星柄部分を全面消色させた後、-16℃以下に冷却して星柄全面を発色させ、再び前記のように任意の柄を形成することができた。
実施例8で調製した感温変色性色彩記憶性マイクロカプセル顔料5部、分散剤1部、非熱変色性青色顔料0.1部、及びポリプロピレンホモポリマー93.9部をエクストルーダーにて180℃で溶融混合してペレットFを得た。
前記ペレットFを用いて、射出成形機にて葡萄の形の置物を成形した。
前記置物は-18℃以下に冷却した後、室温(25℃)では紫色を呈しているが、加温により56℃以上の温度で青色になった。この状態から冷却すると-18℃以下の温度で再び紫色になった。
実施例9で調製した感温変色性色彩記憶性マイクロカプセル顔料20部(予め-23℃以下に冷却して青色に発色させたもの)を、アクリル性樹脂エマルジョン(固形分40%)78.0部、及び消泡剤2.0部からなる水性インキビヒクルに均一に分散させてインキ組成物Gを調製した。
上質紙上に非熱変色性インキを用いて印刷された商品券に、前記インキ組成物Gを用いてグラビア印刷により偽造判別マークを印刷した。
前記偽造判別マークは室温(25℃)では青色を呈しており、体温や環境温度では色変化しないが、52℃以上に加熱すると無色となり、-23℃以下に冷却すると再び青色となった。
前記商品券の偽造判別マークは室温温度域では青色を呈して色変化しないため、偽造判別マークであることを識別できないが、52℃以上に加熱すると無色となることから、偽造防止機能を有していた。
T2 発色開始温度
T3 消色開始温度
T4 完全消色温度
ΔH ヒステリシス幅
Claims (9)
- 電子供与性呈色性有機化合物からなる成分(a)と、電子受容性化合物からなる成分(b)と、前記成分(a)と前記成分(b)との呈色反応をコントロールする反応媒体として、下記式(1)で示されるエステル化合物からなる成分(c)と、を含んでなることを特徴とする、感温変色性色彩記憶性組成物。
- 前記式(1)で表されるエステル化合物において、Rは炭素数4乃至14のアルキル基、炭素数6乃至16の脂肪族アシル基のいずれかを示し、Xは水素原子、メチル基、メトキシ基のいずれかを示し、Yは水素原子を示し、Zは水素原子、メチル基、メトキシ基のいずれかを示す、請求項1に記載の組成物。
- 前記成分(a)が、フタリド化合物、フルオラン化合物、スチリノキノリン化合物、ジアザローダミンラクトン化合物、ピリジン化合物、キナゾリン化合物、ビスキナゾリン化合物からなる群より選ばれる化合物である、請求項1にまたは2に記載の組成物。
- ヒステレシス幅ΔHが、8℃乃至80℃である、請求項1~3のいずれか一項に記載の組成物。
- 請求項1~4のいずれか一項に記載の組成物を内包してなることを特徴とする、感温変色性色彩記憶性マイクロカプセル顔料。
- 請求項5に記載のマイクロカプセル顔料と、ビヒクルと、を含んでなることを特徴とする、インキ組成物。
- 請求項6に記載のインキ組成物を収容した軸筒及び前記軸筒内の前記インキ組成物を導出するペン体を備えてなることを特徴とする、筆記具。
- 摩擦部材をさらに備えてなる、請求項7に記載の筆記具。
- 請求項7または8に記載の筆記具と、摩擦体とを備えてなることを特徴とする筆記具セット。
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JP2020521871A (ja) * | 2017-05-25 | 2020-07-27 | アクチボン カンパニー,リミテッド | 過熱防止非可逆的感温変色成形体およびその製造方法 |
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2015
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- 2015-02-04 CN CN201580007177.7A patent/CN105960445B/zh active Active
- 2015-02-04 US US15/115,942 patent/US9682594B2/en active Active
- 2015-02-04 WO PCT/JP2015/053125 patent/WO2015119161A1/ja active Application Filing
- 2015-02-04 JP JP2015561011A patent/JP6437465B2/ja active Active
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2019534803A (ja) * | 2016-08-12 | 2019-12-05 | イーエルシー マネージメント エルエルシー | 化粧用処方を備える構築材料から三次元化粧用物品を印刷するためのデバイス |
WO2018155583A1 (ja) | 2017-02-27 | 2018-08-30 | パイロットインキ株式会社 | 感温変色性色彩記憶性組成物及びそれを内包した感温変色性色彩記憶性マイクロカプセル顔料 |
US11384247B2 (en) | 2017-02-27 | 2022-07-12 | Kabushiki Kaisha Pilot Corporation | Thermochromic color-memory composition and thermochromic color-memory microcapsule pigment encapsulating the same |
JP2020521871A (ja) * | 2017-05-25 | 2020-07-27 | アクチボン カンパニー,リミテッド | 過熱防止非可逆的感温変色成形体およびその製造方法 |
JP7082192B2 (ja) | 2017-05-25 | 2022-06-07 | アクチボン カンパニー,リミテッド | 過熱防止非可逆的感温変色成形体およびその製造方法 |
Also Published As
Publication number | Publication date |
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EP3103853A4 (en) | 2017-10-25 |
TW201544551A (zh) | 2015-12-01 |
CN105960445B (zh) | 2018-06-05 |
EP3103853A1 (en) | 2016-12-14 |
TWI655248B (zh) | 2019-04-01 |
JPWO2015119161A1 (ja) | 2017-03-23 |
CN105960445A (zh) | 2016-09-21 |
US20170050460A1 (en) | 2017-02-23 |
US9682594B2 (en) | 2017-06-20 |
EP3103853B1 (en) | 2018-11-28 |
JP6437465B2 (ja) | 2018-12-12 |
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