WO2023026311A1 - 変色材料及び変色性着色剤 - Google Patents
変色材料及び変色性着色剤 Download PDFInfo
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- WO2023026311A1 WO2023026311A1 PCT/JP2021/030697 JP2021030697W WO2023026311A1 WO 2023026311 A1 WO2023026311 A1 WO 2023026311A1 JP 2021030697 W JP2021030697 W JP 2021030697W WO 2023026311 A1 WO2023026311 A1 WO 2023026311A1
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- color
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- electron
- discoloration
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Classifications
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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
-
- 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
- C09B67/0033—Blends of pigments; Mixtured crystals; Solid solutions
-
- 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
- C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
- C09B67/0083—Solutions of dyes
-
- 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
- C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
- C09B67/0084—Dispersions of dyes
- C09B67/0085—Non common dispersing agents
- C09B67/009—Non common dispersing agents polymeric dispersing agent
-
- 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
- C09D11/30—Inkjet printing inks
- C09D11/34—Hot-melt inks
-
- 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
Definitions
- the present invention relates to a discoloring material and a discoloring coloring agent that can be discolored by water or a liquid containing water.
- ink compositions and coloring compositions for moisture indicators or dew condensation indicators are disclosed as ink compositions and coloring compositions for moisture indicators or dew condensation indicators.
- Japanese Patent Laid-Open No. 2003-183546 discloses a resin obtained by graft polymerization of polyvinylpyrrolidone with an alkyl group having 2 to 22 carbon atoms so as to contain 1 to 80% by weight of the total resin, and/or hydroxyethyl cellulose and / or at least one selected from the group consisting of olefin oxides, glycidyl ethers, glycidyl esters, or glycidic acid esters having an alkyl group having 2 to 22 carbon atoms on one side of the terminal OH group of the hydrophilic group of hydroxypropyl cellulose
- An ink composition for a moisture indicator is disclosed which is mainly composed of a resin obtained by graft-polymerizing one of the above and a pigment as a coloring agent.
- Japanese Patent Application Laid-Open No. 2005-185643 discloses a moisture indicator ink composition containing at least an ink binder, a colorant that develops color under the action of a color developer consisting of a basic substance in the presence of moisture, and a pH adjuster. It is disclosed that by printing on a sheet having a colorant, it functions as an indicator for urine or moisture, does not bleed the colorant, and has a conspicuous color tone.
- a discoloration layer provided on the base material on the observation surface side of the condensed moisture and exposing the powdered water-soluble dye is 0.01 to 20 parts by weight of the water-soluble dye, the water condensed on the surface thereof, and the water-soluble dye dissolved thereby are diffused, and polyester resin, acrylic resin, polyamide resin, polyacetal resin, An ink comprising 3 to 9 parts by weight of a hydrophobic resin selected from polyurethane-based resin, epoxy-based resin, petroleum-based resin, polyvinyl chloride resin, ketone-based resin, and cellulose-based resin, and an organic solvent that does not dissolve the water-soluble dye.
- a dew condensation indicator is disclosed that is formed into a film that changes color due to the dyeing.
- This dew condensation indicator shows a color when the water-soluble dye printed in powder dissolves in moisture such as condensation, and the dye flows out and diffuses.
- Japanese Patent No. 6767021 contains a resin (A), a color-developing compound (B) that changes color depending on the pH of the liquid in contact, and a hydrophilic solvent (C).
- An ink composition for a moisture indicator which is a resin having a quaternary ammonium base, a liquid-impermeable and moisture-permeable sheet-like substrate, and the moisture indicator printed on one surface of the sheet-like substrate
- a moisture-sensing sheet is disclosed that includes a moisture-sensing part composed of an ink composition.
- Japanese Patent No. 5996400 at least one selected from an electron-donating color-forming organic compound, an acid having a phenolic hydroxyl group, an acid having a hydroxyl group and a carboxylic acid group, and an acid having a plurality of carboxylic acid groups, a water-soluble A composition for a moisture indicator containing an oil-soluble resin, a cyclodextrin, and a solvent, which is colorless after coating the composition for a moisture indicator on a substrate and before moisture is detected, but develops a sufficient color when moisture is detected. What is allegedly obtained is disclosed.
- the moisture indicator composition suppresses desensitization when water-soluble and oil-soluble resins such as polyvinylpyrrolidone are used, and makes it possible to clarify the degree of color development and decoloration. and can be easily confirmed visually.
- the ink composition and coloring composition for the moisture indicator or dew condensation indicator are not necessarily considered to be sufficient.
- An object of the present invention is to provide a discoloring material and a discoloring coloring agent that can be discolored by water or a liquid containing water and can be effectively used for detecting water or a liquid containing water.
- the present invention can be expressed, for example, as follows.
- the solubility parameter ( ⁇ ) of the coloration modifier is 10 or more;
- the lipophilic adhesive whose solubility parameter ( ⁇ ) is 12 or less is acrylic resin, methacrylic resin, urethane resin, styrene-butadiene copolymer resin, ethylene-vinyl acetate resin, polyethylene resin, styrene resin, polyester resin,
- the discoloration material according to (5) above which is one or more selected from the group consisting of petroleum resin, rosin acid ester, microstarin wax, paraffin wax, and polyethylene wax.
- the fixing material containing the lipophilic sticking agent is a vehicle in which the lipophilic sticking agent is dissolved or dissolved and dispersed in a volatile organic solvent.
- a discoloration composition that can be discolored by water or a liquid containing water, 1.
- a discoloration coloring agent characterized in that it is held or supported by a predetermined minute body and is capable of being discolored by water or a liquid containing water.
- the discoloration material according to (17) or (18) above which is a hot melt printing ink, an organic solvent evaporation drying printing ink, a thermosetting dry offset ink, or an electrostatic latent image developing toner.
- the color-changing material and color-changing coloring agent of the present invention can be discolored by water or a liquid containing water, they can be effectively used to detect water or a liquid containing water.
- the color-changing material of the present invention can be discolored by water or a liquid containing water, and includes an electron-donating color-forming organic compound, an electron-accepting compound, and an electron-donating color-forming organic compound and an electron-accepting compound.
- the color-changing coloring agent of the present invention is a color-changing composition held or supported by predetermined microscopic particles, which can be discolored by water or a liquid containing water.
- the color-changing composition comprises at least an electron-donating color-forming organic compound, an electron-accepting compound, and a coloration adjusting agent having an effect of preventing coloration by the electron-donating color-forming organic compound and the electron-accepting compound. It is composed of a substance having hydrophilicity and can be discolored by water or a liquid containing water.
- Another discoloration material of the present invention contains a fixing material containing the discoloration coloring agent of the present invention and a lipophilic fixing agent, and can be discolored by water or a liquid containing water.
- An electron-donating color-forming organic compound and an electron-accepting compound can develop color through the transfer of electrons between them.
- the bond between the chromatic organic compound and the electron-accepting compound is cut, resulting in a decolorized state.
- thermochromic dyes when the lipophilic solvent as the third component is in a liquid state above the melting point, the electron bond is cut and becomes a decolorized state, and below the melting point. It is known that in a solid state, bonding occurs due to the above-mentioned transfer of electrons, resulting in coloration. That is, reversible color change occurs due to reversible transfer of electrons.
- two components an electron-donating color-forming organic compound and an electron-accepting compound, which are capable of developing a color by electron transfer, have an effect of preventing coloration due to electron transfer between them.
- a coloration adjusting agent when the coloration adjusting agent is hydrophilic, the action of water or a liquid containing water to interfere with the coloration is suppressed, This is based on the new finding that coloration can be achieved by giving and receiving electrons between an electron-donating color-forming organic compound and an electron-accepting compound.
- An electron-donating color-forming organic compound is a component that develops color by causing a color reaction with an electron-accepting compound (developing substance). It is a color-forming organic compound.
- Electron-donating color-forming organic compounds include, for example, leuco dyes known as dyes for pressure-sensitive copying paper or heat-sensitive recording paper, and other conventionally known compounds constituting thermochromic compositions. Leuco dyes can be used, but are not limited to these.
- electron-donating color-forming organic compounds that can be used include triphenylmethanephthalides, fluoranes, phenothiazines, indolylphthalides, leuco auramines, spiropyrans, rhodaminelactams, triphenyl Methane-based, triazene-based, spirophthalanexanthene-based, naphtolactam-based, and azomethine-based compounds can be mentioned.
- electron-donating color-forming organic compounds include: 3,6-dimethoxyfluorane, 3,6-dibutoxyfluorane, 3-diethylamino-7-chlorofluorane, 3-diethylamino-7phenylaminofluorane, 3-chloro-6-phenylaminofluorane, 3- Diethylamino-6,8-dimethylfluorane, 3-diethylamino-6-methyl-7-chlorofluorane, 3,3 bis(1-n-butyl-2-methyl-indol-3yl)phthalide, 3-(4 -diethylaminophenol)-3-(1-ethyl-2-methylindol-3yl)phthalide, 3-(4-diethylamino-2-methyl)phenyl-3-(1,2-dimethylindol-3-yl)phthalide , 3-diethylamino-7,8-benzofuran, 6-(dimethylamino)-3,
- any one of the electron-donating color-forming organic compound By using them or using them in combination of two or more, it is possible to arbitrarily adjust the hue of the coloring state.
- An electron-accepting compound (color-developing substance) is a component for developing color through a color reaction with an electron-donating color-developing organic compound such as a leuco dye.
- color-developing substances examples include those conventionally known as color developers for pressure-sensitive copying paper, color developers for thermosensitive recording paper, and color developers for thermochromic compositions.
- other organic color-developing substances, and other acid color-developing substances can be used, and specific examples thereof include lipophilic substances such as bisphenol derivatives and benzotriazole derivatives.
- electron-accepting compounds include 5-butylbenzotriazole, bisbenzotriazole-5-methane, 1,1'-biphenyl-4,4'-diol, o-methylene bisphenol, p-methylenebisphenol, 2,2'-bisphenol, 4,4'-isopropylidenediphenol, 2,2'-bis(4-hydroxyphenyl)hexafluoropropane, bis(4-hydroxyphenyl)sulfate, 4 ,4'-(2-ethylhexylidene)bisphenol, 4,4'-hexylidenebisphenol, 4,4'-octylidenebisphenol, 4,4'-(4-methyloctylidene)bisphenol, 4,4 '-decylidenebisphenol, 4,4'-(1,3-dimethylbutylidene)bisphenol, 4,4'-(1,5-dimethylhexylidene)bisphenol, 4,4''-decylidene
- one or two types of electron-accepting compounds (color-developing substances) that constitute the three components together with the electron-donating color-forming organic compound and the hydrophilic color-adjusting agent are used.
- the above can be used in combination.
- the coloration adjusting agent has an action (desensitization action) that interferes with the coloration by the electron-donating color-forming organic compound and the electron-accepting compound in the above three components (coloration due to the transfer of electrons between them).
- the coloration adjusting agent is hydrophilic, the action of the coloration adjusting agent is suppressed by water or a liquid containing water, and the electron-donating coloration organic compound and the electron Coloration (in other words, color change) can be achieved by the transfer of electrons between the acceptor compounds.
- the above three components (especially the coloration modifier) are in contact with water or a liquid containing water or contain water at a temperature where the hydrophilicity is low. Even if it is wetted with a liquid that absorbs water, the action of the color adjustment agent may not be suppressed or may be suppressed to a low degree. In addition, it is considered that the action of the color adjustment agent is difficult to suppress only by a change in the humidity of the surrounding air or the like.
- the color adjustment agent is a component involved in the basic discoloration function of water or a liquid containing water in the present invention, and is required to have hydrophilicity.
- the solubility parameter ( ⁇ ) of the coloration modifier is 10 or more.
- the difference in solubility parameter ( ⁇ ) between the electron-accepting compound and the color adjustment agent is preferably within ⁇ 3.
- the difference in solubility parameter ( ⁇ ) between the electron-accepting compound and the coloration adjusting agent is more preferably within ⁇ 2, more preferably within ⁇ 1.5.
- the electron-donating color-forming organic compound in the present invention It is possible to maximize the action (desensitization action) of the coloration adjusting agent that prevents coloration due to electron transfer between the compound and the electron-accepting compound.
- the color-changing material or color-changing colorant of the present invention is colored by the transfer of electrons between the electron-donating color-forming organic compound and the electron-accepting compound in a state before the color change due to water or a liquid containing water.
- the solubility parameter can be measured using the Hansen sphere method as follows.
- the solubility parameter is calculated based on swelling, softening, and cracking.
- the center coordinates of this sphere indicate the solubility parameter of the sample, and the radius indicates the range of solvents that dissolve the sample.
- the color adjustment agent is water
- the solubility (g/100gH 2 O) in at least the temperature at which the color-changing material or color-changing colorant of the present invention is used at least the temperature at which water or a liquid containing water can exist, for example, normal temperature, 1 to 40 C., 5 to 30.degree. C., 40 to 80.degree. C., 60 to 90.degree. C., 0 to 100.degree. It is more preferably 200 or more, and still more preferably infinite.
- the usage environment is, for example, an environment in which the discoloration of the discoloration material or discoloration coloring agent of the present invention by water or a liquid containing water is required.
- a coloration modifier that inhibits coloration due to the transfer of electrons between an electron-donating coloration organic compound and an electron-accepting compound by using a coloration modifier that has as high a solubility in water as possible.
- the effect (desensitization effect) is effectively suppressed by water or a liquid containing water, and coloration by electron transfer between the electron-donating color-forming organic compound and the electron-accepting compound is possible. Since it is effectively caused (for example, color is developed at a high concentration), the difference from the state before discoloration by water or a liquid containing water (discoloration, especially its visibility) can be made more clear. can be
- the water solubility (g/100gH 2 O) of the coloration modifier in the three components is sufficiently large, such as when it is 100 or more, the solubility parameter is increased by contacting the coloration modifier with water.
- coloration modifiers include: 1-methoxy-2-propanol, 1-ethoxy-2-propanol, ethylene glycol, propylene glycol, diethylene glycol, diethylene glycol monomethyl ether, dipropylene glycol, dipropylene glycol monomethyl ether, triethylene glycol, tripropylene glycol, glycerin, tetraethylene Glycol, polyethylene glycol 200, polyethylene glycol 300, polyethylene glycol 400, polyethylene glycol 600, polyethylene glycol 1000, polyethylene glycol 2000, polyethylene glycol 4000, polyethylene glycol 6000, polypropylene glycol 20000, polypropylene glycol 400, polypropylene glycol 750, 1,3 propane diols, 1,3 butanediol, 1,5 pentanediol, 1,6 hexanediol, 1,3 cyclohexanediol, etc., but not limited to these.
- the electron-donating color-developing organic compound and the electron-accepting compound as well as the coloration modifiers constituting the above three components can be used either singly or in combination of two or more.
- the coloration modifier has plasticity or fluidity at the environmental temperature of use of the color-change material or color-change colorant of the present invention, whether it is liquid or solid when used alone. can be anything.
- the discoloration coloring agent of the present invention is obtained by holding or carrying the above-mentioned discoloration composition on predetermined microscopic particles, and can be discolored by water or a liquid containing water.
- the predetermined fine particles in the color-changing coloring agent of the present invention are for holding or carrying the color-changing composition and forming a colorant capable of being discolored by water or a liquid containing water. be.
- the predetermined microscopic object can be such that water or a liquid containing water can come into contact with the color-changing composition held or carried.
- predetermined microscopic bodies examples include porous substances such as powdery porous substances as microscopic bodies, which are external to the discoloration composition held or carried in a large number of pores. Water or a liquid containing water can contact directly or through pores, or the color-changing composition held or supported inside, such as a porous microcapsule, contains water or water outside. A liquid can be contacted through a large number of pores.
- the predetermined minute objects that can be used in the present invention are not limited to these.
- the discoloring composition comprising at least the three components a discoloring coloring agent supported by predetermined microscopic bodies, while maintaining the composition of the discoloring composition in individual predetermined microscopic bodies, It can be stably and rapidly discolored by a water-containing liquid.
- the predetermined microparticles are those in which the discoloration of the discoloration composition held or supported appears as clearly as possible, and in particular, in terms of being clearly visible, they are colorless, white, light-colored, or transparent. Although it is preferable to have a property, it is not limited to these.
- At least the portion that retains or carries the color-changing composition clearly shows the color change (particularly its visibility) of the color-changing colorant of the present invention due to water or a liquid containing water.
- to be basic or neutral pH range is 6.0 to 12.0, more preferably 6.5 to 11.0, more preferably 7.0 to 9.0
- discoloration coloring agent and the discoloration composition of the present invention contain a water-soluble acidic substance.
- the discoloration composition is preferably retained or supported in a solid state by predetermined microscopic bodies, but is not limited to this. or other plastic or fluid state held or supported by a predetermined microscopic body (for example, adsorbed, adhered or impregnated in a large number of pores of a powdery porous substance, or encapsulated in a porous microcapsule) It can be anything that exists.
- the color-changing colorant of the present invention comprises at least an electron-donating color-formable organic compound, an electron-accepting compound, and a color-formation adjusting agent, for example, by heat-melt-dissolution, heat-melt-mixing, or heat-dissolution, preferably in a liquid form.
- a color-changing composition or as a color-changing composition in a state having other plasticity or fluidity, after applying it to a predetermined microscopic body (for example, the color-changing composition is attached, adsorbed, impregnated or included in a predetermined microscopic body.
- a use environment for example, use environment temperature
- a use environment temperature in a state of being retained or carried in a predetermined microscopic body, preferably as a solid, or in a state of having a viscous body or other plasticity or fluidity , held or supported (for example, attached, adsorbed, impregnated, or included).
- Preferable examples of the predetermined fine particles in the discoloration coloring agent of the present invention include porous substances such as powdery porous substances.
- One or both of the pore volume and pore diameter of the porous substance as the predetermined microscopic object is a color-changing composition comprising at least an electron-donating color-forming organic compound, an electron-accepting compound, and a color-adjusting agent. , is stably supported on a porous material, and the coloration caused by the transfer of electrons between the electron-donating color organic compound and the electron-accepting compound by water or a liquid containing water is effectively visually recognized ( For example, it is visible at a high density), the following is preferable.
- the pore volume of the porous substance is preferably 0.3 cm 3 /g or more. It is more preferably 0.4 cm 3 /g or more, still more preferably 0.5 cm 3 /g or more.
- the pore size of the porous substance is preferably 20 angstroms or more. More preferably 50 angstroms or more, still more preferably 100 angstroms or more.
- Examples of the porous material in the discoloration colorant of the present invention include: Silicon dioxide, silica gel, fired silicon dioxide/alumina (or silicon dioxide/alumina composite or mixture), aluminum silicate, zeolite, alumina, diatomaceous earths, talc, bentonites, clays, calcium carbonate, magnesium carbonate, acid clay, Titanium oxide, ion exchange resins, etc. can be used, but are not limited to these. In addition, it is preferable to neutralize the porous substance exhibiting acidity before using it for the discoloration colorant of the present invention.
- any one type can be used, or two or more types can be used in combination. Preferably, it exhibits basicity or neutrality.
- the color-changing colorant of the present invention in the case where the predetermined microscopic object is a porous substance is, for example, at least an electron-donating color-forming organic compound, an electron-accepting compound, and a color-adjusting agent, for example, heated and melted.
- dissolution by heat-melting and mixing, or by heat-dissolution, preferably as a liquid color-changing composition, or as a color-changing composition in a state having other plasticity or fluidity, it is attached to a porous substance as a predetermined fine body , after being adsorbed or impregnated, in the environment of use, preferably held or supported (for example, attached or adsorbed) to a porous substance as a solid, or, for example, a viscous body or other plastic or fluid It can be held or supported (for example, attached, adsorbed, or impregnated) in a state having properties.
- the operation of attaching, adsorbing, impregnating, etc. the discoloring composition consisting of at least three components to a porous substance as a predetermined microscopic body to hold or carry it is, for example, the at least three components are heated, melted, melted or mixed by heating. Alternatively, it is made into a liquid state (or a state having other plasticity or fluidity) by heating and dissolving, and is added to a group of porous substances as predetermined minute bodies such as powdery porous substances that are continuously stirred. be able to.
- an electron-donating color-developing organic compound 1 part of an electron-donating color-developing organic compound, 3 to 5 parts of an electron-accepting compound having a difference in solubility parameter ( ⁇ ) of ⁇ 2 or less, and 5 to 20 parts of a coloration modifier are placed in a heat-resistant container to 100 parts.
- a color-changing composition that is heated and melted at 160° C. to 160° C., and has a pore volume of 0.3 cm 3 /g or more and a pore diameter of 20 angstroms or more in powder form (preferably neutral to alkaline)
- the porous material is continuously stirred in another heat-resistant container, and the heat-melted discoloration composition is gradually introduced into the container to add the discoloration composition to the powdery porous material group. It can be carried by adsorption (or impregnation, etc.).
- the same porous material as described above is heated to 100 to 160° C. in a heat-resistant container and continuously stirred, and the heat-melted discoloration composition is gradually added thereto.
- the discoloring composition can be adsorbed (or impregnated, etc.) on the powdery porous substance group to be supported.
- the maximum amount that can be held or carried is Whether or not a large amount (saturated retention or supported amount) is exceeded is determined by continuously stirring the at least three components in a liquid state (or another state having plasticity or fluidity).
- a large amount saturated retention or supported amount
- the maximum amount of the discoloration composition that can be retained or supported on a porous material as a predetermined microscopic object such as a powdery porous material is mainly although it varies depending on the pore volume and pore size, the amount of the discoloring composition is generally in the range of 0.5 to 1.5 parts per part of the porous material.
- the saturation retention or loading amount (or An amount close to that, for example, 50% by mass or more, preferably 70% by mass or more, more preferably 80% by mass or more, still more preferably 90% by mass or more, more preferably 95% by mass or more of the saturated retention or supported amount). It is preferable that the discoloring composition consisting of three components is retained or carried in a porous substance as a predetermined fine particle such as a powdery porous substance.
- the fixing material in the discoloration material of the present invention is mainly used for fixing, contains a lipophilic fixing agent, and is, for example, liquid or solid at room temperature or in the operating temperature range.
- the fixing material may contain other substances such as various additives.
- fixing materials in the color-changing material of the present invention include vehicles (fixing materials) in hot-melt printing inks (color-changing materials), vehicles (fixing materials) in organic solvent evaporation drying printing inks (color-changing materials), Vehicles (fixing materials) in thermosetting dry offset inks (color changing materials), components (fixing materials) mainly composed of binder resins in electrostatic latent image developing toners (color changing materials), crayons (color changing materials), Waxes (fixing materials) in oil pastels (color changing materials) and vehicles (fixing materials) in liquid paints (color changing materials) can be mentioned.
- the lipophilic fixing agent contained in the fixing material in the discoloring material of the present invention is the required object (e.g., paper, synthetic resin film [e.g., polyester film, polyethylene film, polypropylene film], synthetic paper , sheet-like articles such as non-woven fabrics, woven fabrics, knitted fabrics, textile products such as clothing made of woven fabrics, knitted fabrics, etc., natural leather or synthetic leather or products made of these, plate-like articles made of wood, synthetic resin, metal or other materials or other shaped objects), and preferably have a solubility parameter ( ⁇ ) of 12 or less.
- the solubility parameter ( ⁇ ) of the lipophilic sticking agent is more preferably 11 or less, still more preferably 10 or less.
- Both the softening point of the vehicle (fixing material) and the softening point of the lipophilic fixing agent contained in the vehicle in the hot-melt printing ink as the discoloring material of the present invention are preferably 50 to 140°C. .
- the softening point of the fixing material in the discoloring material other than the hot-melt printing ink and the softening point of the lipophilic fixing agent contained in the fixing material are not limited to this.
- lipophilic adhesives include polymeric substances such as synthetic resins and synthetic rubbers, natural resins, and waxes including polymeric waxes. More specifically, ethylene vinyl acetate resins, polyethylene resins, Styrene-butadiene copolymer resin, styrene resin, polyester resin, acrylic rubber, acrylic resin, methacrylic resin, urethane resin, petroleum resin, rosin acid ester resin, alkyd melamine resin, alkylated melamine resin such as butylated melamine, amide resin, micro Stalin WAX, paraffin WAX, polyethylene WAX, polypropylene WAX, carnauba WAX, crystalline WAX and the like can be mentioned, and any one of these can be used or two or more of them can be used in combination. However, it is not limited to these.
- the discoloration material of the present invention preferably contains 80% by weight or more of a lipophilic sticking agent with a solubility parameter ( ⁇ ) of 12 or less in the total sticking agent.
- the discoloration material may cause problems such as coloring as a residual color before contact with water or a liquid containing water, or strong residual color over time.
- a hydrophilic sticking agent (a sticking agent that also acts as a hydrophilic agent) having a solubility parameter ( ⁇ ) of 12 or more is contained in the total sticking agent in an amount of 20% by weight or less. Combined use of ranges may result in speeding up the color change (indicator function) of the color change material by water or liquids containing water.
- the content of the hydrophilic fixing agent having a solubility parameter ( ⁇ ) of 12 or more in the total fixing agent is preferably 10% by weight or less, more preferably 10% by weight or less, more preferably in order to improve the discoloration speed while avoiding the adverse effect of causing residual color. 5% by weight or less.
- Hydrophilic adhesives having a solubility parameter ( ⁇ ) of 12 or more to be used in this way include functional groups (hydroxyl, carboxyl, sulfonic acid, amino groups) acting as hydrophilic groups on the polymer skeleton of synthetic resins and polymer waxes.
- solubility parameter ( ⁇ ) is 12 or more, or polyvinyl alcohol resin, polybutyral resin, ethyl cellulose, hydroxypropyl cellulose, polyvinylpyrrolidone, epoxy resin, vinylidene chloride Resins, cellulose acetate resins, vinyl acetate resins, phenolic resins, polyamide resins, etc., can be mentioned, and it is preferable to select those having excellent compatibility with the lipophilic fixing agent in the discoloring material of the present invention.
- the discoloring material of the present invention contains the above three components and a fixing material, or contains the above discoloring coloring agent and a fixing material, and can be discolored by water or a liquid containing water. Or it can serve as an indicator for liquids containing water.
- the discoloration material containing the above three components and a fixing material contains, for example, 0.1 to 2% by weight of an electron-donating color-developing organic compound, 1 to 10% by weight of an electron-accepting compound, and 5 to 5% of a coloration modifier. 30% by weight, 80% by weight or less of a fixing material, and, if necessary, various additives, volatile organic solvents, etc., as the remainder.
- the discoloration material containing the discoloration colorant and the fixing material includes, for example, 0.1 to 2% by weight of an electron-donating color-forming organic compound, 1 to 10% by weight of an electron-accepting compound, and color adjustment. 1 to 30% by weight of the agent, 5 to 30% by weight of the predetermined fine particles, 80% by weight or less of the fixing material, and, if necessary, various additives, volatile organic solvents, etc. as the balance. can be done.
- the discoloring material of the present invention in addition to the above three components or the discoloring coloring agent and the fixing material (or in the fixing material), is, for example, 20% by weight or less (preferably 10% by weight) as a content in the total fixing agent. % or less, more preferably 5% or less by weight) of hydrophilic sticking agents such as those described above; surfactants, hydrophilic oils, etc.); non-discoloring coloring agents (for example, one or more of organic pigments, dyes, inorganic pigments, etc., all of which are non-discoloring); antioxidants, ultraviolet absorbers , antifoaming agents, thickeners, extender pigments, plasticizers, and other additives.
- discoloration materials include hot melt printing inks, organic solvent evaporation drying printing inks, thermosetting dry offset inks, inkjet inks (including hot melt inkjet inks), writing instrument inks, crayons, oil pastels, electrostatic Examples include, but are not limited to, latent image developing toners, (liquid) coatings, powder coatings, and plastic molding materials.
- the color-changing material of the present invention contains a non-color-changing colorant
- coloration due to electron transfer between the electron-donating color-forming organic compound and the electron-accepting compound is prevented by the action of the coloration adjusting agent.
- the above-mentioned A color is added by the non-discoloring coloring agent.
- the non-discoloring pigments may be inorganic pigments or organic pigments, for example, black pigments such as carbon black pigments and iron oxide pigments; red pigments such as azo pigments, quinacridone pigments, diketopyrrolopyrrole pigments, Chromophthal-based pigments, anthraquinone-based pigments, etc.; azo-based pigments, imidazolone-based pigments, titanium-based pigments, etc. as yellow pigments; indanthrene-based pigments, azo-based pigments, etc.
- black pigments such as carbon black pigments and iron oxide pigments
- red pigments such as azo pigments, quinacridone pigments, diketopyrrolopyrrole pigments, Chromophthal-based pigments, anthraquinone-based pigments, etc.
- azo-based pigments imidazolone-based pigments, titanium-based pigments, etc. as yellow pigments
- phthalocyanine-based pigments as blue or green pigments
- Pigments and the like Dioxazine-based pigments, quinacridone-based pigments, and the like can be used as purple pigments, but are not limited to these.
- Disperse dyes can be used as the non-discoloring dyes, but are not limited to these.
- the non-discoloring pigment or dye is preferably used in a state of being previously dispersed or dissolved in the color adjustment agent that constitutes the composition.
- the amount of the non-discoloring pigment or dye used is preferably within a range that does not hinder the visibility of the discoloration of the discoloring material of the present invention due to water or a liquid containing water. Specifically, it is preferable to blend the above three components in an amount of about 0.0001 to 1 part per 100 parts of the total amount of the above three components.
- the hot-melt printing ink as the discoloration material of the present invention comprises a lipophilic fixing agent, an electron-donating color-forming organic compound, an electron-accepting compound, and the electron-donating color-forming organic compound and an electron-accepting compound.
- a coloration adjusting agent having an action to prevent coloration by a polar compound and having hydrophilicity It can be obtained as a mixture of the main components, or as a mixture of the lipophilic fixing agent and the discoloration colorant as the main components.
- Mixing of the lipophilic sticking agent and the three components (or the discoloring composition) or the components mainly composed of the discoloring colorant is performed, for example, by heat-melt mixing, or by heat-melt-mixing and a heated three-roll mill. It can be carried out by using a dispersing treatment using a dispersing machine.
- the hot-melt printing ink of the present invention includes the lipophilic fixing agent, and the three components (or color-changing composition) or components other than the color-changing colorant, such as the hydrophilic fixing agents, hydrophilic agents, non-discoloring coloring agents, antioxidants, ultraviolet absorbers, antifoaming agents, thickeners, extender pigments, plasticizers and other additives.
- the hydrophilic fixing agents such as the hydrophilic fixing agents, hydrophilic agents, non-discoloring coloring agents, antioxidants, ultraviolet absorbers, antifoaming agents, thickeners, extender pigments, plasticizers and other additives.
- the hot-melt printing ink of the present invention has physical properties such as viscosity (viscosity coefficient) and drying speed depending on the application equipment such as printing machines and coating machines for applying to the desired object. It should preferably be properly adjusted. Such physical properties can be adjusted by selecting components other than the main components, such as thickeners, viscosity modifiers, antifoaming agents, etc., and increasing or decreasing the blending amounts, in addition to the selection of the main components.
- Types of the hot-melt printing ink of the present invention include, for example, hot-melt screen printing ink, hot-melt gravure printing ink, hot-melt tampo printing ink, hot-melt knife coater ink, hot-melt roll Coater inks, T-dye inks and the like can be mentioned, but the inks are not limited to these.
- the viscosity range in the temperature range during heating for printing can be adjusted to be approximately 5000 to 50000 mPa s (millipascal seconds) in the case of hot-melt screen printing ink, for example. In the case of hot-melt gravure printing ink, it can be adjusted to be approximately 100 to 500 mPa ⁇ s.
- the range of viscosity in the temperature range during heating for printing can also be adjusted according to applicable equipment such as printing machines and coating machines.
- the softening point of the hot-melt printing ink of the present invention is preferably about 50° C. to 140° C. in consideration of the appropriate temperature, viscosity, ink stability, etc. in hot-melt printing.
- the lipophilic fixing agent in the hot-melt printing ink it is preferable to use one having a softening point of approximately 50°C to 140°C.
- the hot-melt printing ink of the present invention can be used for printing or the like by heating and melting the ink in applicable equipment such as a printing machine or a coating machine.
- An example of the heat melting temperature is approximately 50°C to 140°C, more preferably 80°C to 120°C.
- Equipment for applying hot-melt printing inks to objects includes: A hot-melt screen printer that prints using a screen plate that can be heated with electric heat, Hot-melt gravure printing machine that prints by heating the ink pan (ink reservoir container) on the machine and the gravure roll plate, Hot-melt type tampo printing machine that prints by heating the metal plate and silicon pad on the machine, A hot-melt knife (comma) coater that heats the coating roll and ink on the machine for coating, and a hot-melt roll coater coater, Examples include a T-die coating machine that heats an ink reservoir and ink and coats the ink while allowing the ink to fall from a certain gap in a curtain shape, but the invention is not limited to these.
- a discoloration material that can be discolored by water or a liquid containing water is fixed (i.e., has an indicator function )
- Printed matter, coated matter, etc. can be obtained.
- the organic solvent evaporative drying ink as the discoloring material of the present invention is a vehicle in which a lipophilic fixing agent is dissolved or dissolved and dispersed (for example, dissolved and partially dispersed) in a volatile organic solvent such as a volatile lipophilic organic solvent.
- fixing material an electron-donating color-forming organic compound, an electron-accepting compound, and a color-adjusting agent having an effect of inhibiting coloration by the electron-donating color-forming organic compound and the electron-accepting compound.
- a mixture of components mainly composed of three components (or a color-changing composition containing these three components and capable of being discolored by water or a liquid containing water), or the vehicle (fixing material) and the above discoloration colorant as a main component.
- Mixing of the vehicle and the three components (or the discoloration composition) or a component mainly composed of the discoloration coloring agent can be performed by, for example, stirring and mixing using a Dispa mixer, a homomixer, or the like, a Dyno mill, or an attritor mill. , a three-roll mill, a sand mill, a ball mill, or the like.
- the volatile organic solvent such as a volatile oleophilic organic solvent in the organic solvent evaporation drying ink of the present invention preferably has a solubility parameter ( ⁇ ) of 12 or less.
- the solubility parameter ( ⁇ ) of a volatile organic solvent such as a volatile lipophilic organic solvent is more preferably 11 or less, still more preferably 10 or less.
- the discoloring material fixed on the object is water.
- an organic solvent having low solubility in the solvent preferably a water-insoluble organic solvent.
- the boiling point of the volatile organic solvent such as the volatile lipophilic organic solvent is preferably 200°C or lower, more preferably 180°C or lower, and even more preferably 150°C or lower.
- the organic solvent evaporation drying printing ink of the present invention is applied to an object by printing or the like, the residual organic solvent in the color-changing material fixed on the object means that the color-changing material is water or a liquid containing water.
- the volatile hydrophilic A volatile organic solvent such as an oily organic solvent may have a somewhat high boiling point.
- the lipophilic sticking agent can be selected from those suitable for the use of the organic solvent evaporation drying ink, and the volatile organic solvent such as the volatile lipophilic organic solvent dissolves or dissolves the lipophilic sticking agent. and those suitable for dispersing can be selected.
- the vehicle (fixing material) contains a volatile organic solvent having a boiling point of 200° C. or lower and a solubility parameter ( ⁇ ) of 12 or lower, It is preferably contained in an amount of 80% by weight or more. A more preferable content is 90% by weight or more, more preferably 95% by weight or more.
- volatile organic solvents such as volatile lipophilic organic solvents having a solubility parameter ( ⁇ ) of 12 or less and a boiling point of 200°C or less include aliphatic hydrocarbons, aromatic hydrocarbons, esters, ketones, ethers and alcohols, specifically n-pentane, n-heptane, n-hexane, cyclohexane, methylcyclohexane, ethylcyclohexane, butyl acetate, isobutyl acetate, isopropyl acetate, xylene, toluene, benzene, methyl ethyl ketone.
- ⁇ solubility parameter
- the organic solvent evaporative drying ink of the present invention when a volatile hydrophilic organic solvent with a solubility parameter ( ⁇ ) of 12 or more is contained in more than 20% by weight in all volatile organic solvents, the organic Solvent-evaporation-drying inks exhibit residual coloration before contact with water or water-containing liquids, strong residual color over time, and discoloration due to contact with water or water-containing liquids. This is not preferable because problems such as changes in hue may occur.
- the volatile lipophilic organic solvent and the volatile hydrophilic organic solvent when the combined use of an organic solvent is required, preferably within 20% by weight (more preferably within 10% by weight, still more preferably within 5% by weight) of a volatile hydrophilic organic solvent in all organic solvents. can also
- the organic solvent evaporation drying type printing ink of the present invention all the organic solvents are volatile. Coloration as a residual color before contact with a liquid containing water, strong residual color over time, color change due to contact with water or a liquid containing water, or a change in hue etc. (Color development) This is desirable in order to prevent problems such as subsequent fading.
- the boiling point of the volatile organic solvent is 200 ° C. or less, and after the organic solvent evaporation drying printing ink of the present invention is applied to the object by printing or the like, the forced operation of the heating drying device, etc. It is preferable that a volatile organic solvent such as a volatile lipophilic organic solvent is reliably prevented from remaining.
- the organic solvent evaporation drying ink of the present invention comprises a volatile organic solvent such as a volatile lipophilic organic solvent and a lipophilic fixing agent in the vehicle, and the three components (or color-changing composition) or the color-changing Ingredients other than the volatile colorant include, for example, the aforementioned hydrophilic fixing agent, hydrophilic agent, volatile hydrophilic organic solvent, or non-discoloring colorant, antioxidant, ultraviolet absorber, antifoaming agent. It may contain various additives such as a thickening agent, a thickener, an extender, a plasticizer, and the like.
- the organic solvent evaporation drying ink of the present invention contains a non-volatile organic compound (for example, a plasticizer, a dispersant, etc.), when applied to an object by printing, the discoloration material fixed to the object.
- a non-volatile organic compound for example, a plasticizer, a dispersant, etc.
- the content of non-volatile organic compounds is 10% by weight relative to all volatile organic solvents. or less (more preferably 5% by weight or less).
- the organic solvent evaporative drying ink of the present invention has physical properties such as viscosity (viscosity coefficient) and drying speed depending on the application equipment such as printing machines and coating machines for applying to the desired object. is preferably adjusted appropriately. Such physical properties can be adjusted by selecting components other than the main components, such as thickeners, viscosity modifiers, antifoaming agents, etc., and increasing or decreasing the blending amounts, in addition to the selection of the main components.
- Types of the organic solvent evaporation drying ink of the present invention include, for example, screen printing ink, gravure printing ink, flexographic printing ink, tampo printing ink, inkjet ink, knife coater ink, reverse coater ink, roll coater ink, Examples include, but are not limited to, curtain coater ink, padding ink, spray ink, and the like.
- the viscosity range of the ink can be adjusted, for example, to be approximately 5000 to 50000 mPa ⁇ s (millipascal seconds) for screen printing inks, and approximately 100 to 500 mPa for gravure printing inks. ⁇ In the case of flexographic printing ink, it can be adjusted to be approximately 150 to 1000 mPa s. For other inks, it can be adjusted to printing equipment. The viscosity range may be adjusted accordingly.
- a general flexographic ink is a hydrophilic ink containing a hydrophilic organic solvent (and water if necessary) having a solubility parameter ( ⁇ ) of 12 or more, but the organic solvent evaporation drying ink of the present invention is used.
- flexographic printing ink in order to avoid color development (discoloration) in contact with a hydrophilic ink vehicle, flexographic printing containing 80% by weight or more of a volatile oleophilic organic solvent with a solubility parameter ( ⁇ ) of 12 or less It is preferable to use an ink, and it is more preferable to use a flexographic printing ink containing 80% by weight or more of a volatile lipophilic organic solvent having a solubility parameter ( ⁇ ) of 11 or less (more preferably 10 or less). It is desired that the flexographic plate used for printing in this case has resistance to the oleophilic flexographic printing ink.
- the organic solvent evaporative drying ink of the present invention can be used for printing, etc., using applicable equipment such as existing printers and coating machines.
- Examples of printing machines and coating machines that can be used include existing screen printing machines, gravure printing machines, flexo printing machines, tampo printing machines, inkjet printing machines, knife coaters, reverse coaters, and roll coaters.
- a coating machine, a curtain coater coating machine, a padding machine, a spray coating machine, etc. can be mentioned, but the coating machine is not limited to these.
- the discoloration material that can be discolored by water or a liquid containing water is fixed (that is, the indicator function have) printed matter, coated matter, etc. can be obtained.
- thermosetting dry offset ink as the discoloration material of the present invention can be used, for example, with a solubility parameter ( ⁇ ) of 12 or less, such as alkyd resin, melamine resin, alkylated melamine resin, amino resin, oil-free polyester resin, linseed oil, etc. It can be obtained by dispersing a mixture of a vehicle in which a plurality of components such as an oil component and an aromatic hydrocarbon solvent are combined with the discoloration coloring agent using a mill or the like. The ink thus obtained can be applied to 3-piece solder cans for printing metal sheets, 2-piece DR cans, and 2-piece DI cans for printing curved metal surfaces. After printing, a printed matter having a printed layer on the surface of the metal which is capable of being discolored by water or a liquid containing water is obtained by heat-treating at 250°C to 300°C.
- ⁇ solubility parameter
- the electrostatic latent image developing toner (fine powder) as the discoloring material of the present invention comprises, for example, a lipophilic fixing agent, an electron-donating color-forming organic compound, an electron-accepting compound, and the electron-donating color-forming organic
- a coloration modifier that has the effect of preventing coloration by a compound and an electron-accepting compound and has hydrophilicity (or a discoloration that can be discolored by water or a liquid containing water containing these three components) composition
- fine powder for example, finely pulverized after heat-melting and mixing
- a lipophilic sticking agent and the above discoloration coloring agent in fine powder for example, finely pulverized after heat-melting and mixing.
- the toner (fine powder) for developing an electrostatic latent image of the present invention contains the lipophilic fixing agent (binder resin, etc.) and the three components (or the discoloration composition) or components other than the discoloration colorant, such as: Various additives such as a charge control agent, a hydrophilic sticking agent as described above, a hydrophilic agent, a non-discoloring coloring agent, an antioxidant, an ultraviolet absorber, and a plasticizer can be contained.
- the crayon or oil pastel as the discoloration material of the present invention includes, for example, WAX and paraffins (lipophilic sticking agents), an electron-donating color-forming organic compound, an electron-accepting compound, and the electron-donating color-forming organic It can be obtained by heating and melting three components of a compound and a hydrophilic coloration adjusting agent having an effect of preventing coloration by an electron-accepting compound, followed by molding.
- WAX and paraffins lipophilic sticking agents
- an electron-donating color-forming organic compound an electron-accepting compound
- the electron-donating color-forming organic It can be obtained by heating and melting three components of a compound and a hydrophilic coloration adjusting agent having an effect of preventing coloration by an electron-accepting compound, followed by molding.
- the discoloration material of the present invention can be discolored by water or a liquid containing water, and can function as an indicator for water or a liquid containing water. By fixing it to an object or the like, it can be used to accurately detect moisture and take prompt and appropriate measures in various applications.
- packaging materials including blister packs, etc.
- adhesive materials stickers, stickers, etc.
- attached materials such as shrink labels, etc.
- iv)Uses such as moisture management and moisture absorption management that are provided in the required range of packaging materials, stickers, containers, etc. to indicate moisture detection by discoloration;
- a certificate or certification article with a security function for example, seal certificate, resident card, securities, New Year's card, hot summer printing on congratulatory postcards, etc.;
- Water omikuji which are offered at shrines and temples and whose colors change with water or liquids containing water to reveal words or patterns, toys that change colors with water or liquids containing water and whose words or patterns appear (e.g. , a doll imitating urination, a target for a water pistol, etc.), but not limited to these.
- parts and % mean parts by weight and % by weight, respectively.
- SIPERNAT 820A trade name (“ SIPERNAT " is a trademark)
- 44 parts were weighed, and while the powdery porous material was heated to 110°C and stirred with a mixer, the liquid composition at 100°C was gradually added to the powdery porous material. and sufficiently stirred to obtain a white powder in which the composition was supported on a porous material.
- the white powder thus obtained was confirmed to be a powder coloring agent (discoloring coloring agent B) that instantly changes color from white to dark blue when water (liquid) is supplied.
- discoloring coloring agent B a powder coloring agent that instantly changes color from white to dark blue when water (liquid) is supplied.
- the obtained gravure ink was printed on a milky white polyester film with a thickness of 50 ⁇ m using a full-surface plate with 150 lines/inch and a depth of 30 ⁇ m.
- the color of the printed material thus obtained was not particularly different from the color of the original milky white polyester film, but when a drop of water was placed on the gravure ink printed layer of the film, it exhibited a bright blue color, which was a moisture indicator. It was excellent in visibility as.
- Example 1 25 parts of Dianal BR-115, 38.5 parts of toluene, and 20 parts of "discoloring coloring agent B” were replaced with "16.5 parts of discoloring composition A”.
- a gravure ink having a viscosity of 370 mPa ⁇ s was obtained by the same treatment as in Example 1, but this gravure ink separated with time and was not stable.
- the resulting gravure ink was printed in the same manner as in Example 1, and the printed material had a slightly bluish residual color in contrast to the original milky-white color of the polyester film.
- the gravure ink printed layer When one drop of water was placed on the gravure ink printed layer, it exhibited a bright blue color.
- the density difference before and after coloration by water was inferior, but the function as a moisture indicator was exhibited.
- Dianal BR-115 (acrylic resin, solubility parameter ⁇ 9.80) 20 parts, 20 parts of methylcyclohexane (solubility parameter ⁇ 5.27, boiling point 101°C), Propylene glycol monomethyl ether acetate (boiling point 146° C., solubility parameter ⁇ 8.73) 29.5 parts, Dappo SN-510 (antifoaming agent) 0.5 parts, After uniformly mixing 30 parts of Discoloration Colorant B with a stirrer, the mixture was dispersed with an attritor type mill to obtain a flexographic ink with a viscosity of 820 mPa ⁇ s.
- the resulting flexographic ink was printed on a milky white polyethylene film with a thickness of 15 ⁇ m using an anilox roll of 300 lines/inch using a full-surface plate.
- the color of the printed material obtained in this way did not show any residual color, and was not particularly different from the color of the original milky white polyethylene film. and was excellent in visibility as a moisture indicator.
- a flexographic ink having a viscosity of 790 mPa s was prepared in the same manner as in Example 3, except that 27 parts of discoloration coloring agent B in Example 1 was used and 3 parts of urea (hydrophilic agent) was added. got
- the color of the printed matter obtained did not show any residual color and was not particularly different from the color of the original milky white polyethylene film. It exhibited a vivid blue color more rapidly than any of Example 3, and was excellent in visibility and coloring speed as a moisture indicator.
- Tuftec M1913 [trade name ("Tuftec” is a trademark)] (manufactured by Asahi Kasei Corporation, styrene-butadiene resin, solubility parameter ⁇ 9.20) 2 parts, YS Resin TO-85 [trade name] (manufactured by Yasuhara Chemical Co., Ltd., terpene resin, solubility parameter ⁇ 10.0) 10 parts, Toluene (solubility parameter ⁇ 9.13, boiling point 110.6°C) 57.5 parts, Dappo SN-510 (antifoaming agent) 0.5 parts, After uniformly mixing 30 parts of Discoloration Colorant B with a stirrer, the mixture was dispersed with an attritor type mill to obtain a flexographic ink having a viscosity of 290 mPa ⁇ s.
- the resulting flexographic ink was printed on a milky white polyethylene film with a thickness of 15 ⁇ m using a solvent-resistant 300 lines/inch anilox roll and a full-surface plate using a polka dot pattern plate.
- the color of the printed material obtained in this way did not show any residual color, and was not particularly different from the color of the original milky white polyethylene film. It exhibited a polka dot pattern and was excellent in visibility as a moisture indicator.
- the obtained film when the obtained film was applied as the outer film of a disposable diaper, it exhibited a blue polka dot pattern when urinated.
- the film used for disposable diapers did not show any undesirable warping or curling, and was very suitable as a moisture indicator for disposable diapers.
- the flexographic ink obtained in Example 5 was printed on a milky white polyester shrink film having a thickness of 15 ⁇ m with a polka-dot patterned flexographic plate using an anilox roll of 300 lines/inch.
- Vylon 200 [trade name ("Vylon” is a trademark)] (manufactured by Toyobo Co., Ltd., solubility parameter ⁇ 10.5, saturated polyester resin) 25 parts, C-100 [trade name] (manufactured by Cosmo Yuka Co., Ltd., boiling point 150 ° C., solubility parameter ⁇ 9.07, aromatic hydrocarbon) 30 parts, 24 parts of propylene glycol monomethyl ether acetate (boiling point 146°C, solubility parameter ⁇ 8.73), Silicone TSE 350 [trade name] (manufactured by Momentive, silicone antifoaming agent) 1 part, After 20 parts of discoloration coloring agent B was mixed with a mixer, dispersion treatment was performed using a three-roll mill to obtain a screen ink having a viscosity of 7400 mPa ⁇ s.
- the obtained screen ink was screen-printed on white paper using a 150-mesh screen stencil for the letters and designs of the water omikuji.
- Example 7 After the undercoat ink was dried, the screen ink obtained in Example 7 was screen-printed on the undercoat ink layer in the same manner as in Example 7.
- this printed matter was adversely affected by moisture due to moisture absorption of the paper (white paper) during storage (for example, traces of the letters and patterns of the water omikuji before floating on water). becoming slightly visible) was prevented, and the stability was excellent.
- YS resin TO-85 (terpene resin, solubility parameter ⁇ 10.0) 32.8 parts, Paraffin Wax-115 [trade name] (manufactured by Nippon Seiro Co., Ltd., solubility parameter ⁇ 8.8, Paraffin WAX) 45 parts, 2 parts of UNITHOX 450 [trade name ("UNITHOX” is a trademark)] (hydrophilic agent manufactured by Petrolite), KS-7716 [trade name] (silicone antifoaming agent) 0.2 parts, 20 parts of Discoloration Colorant B are dissolved by heating to 100°C, mixed, and uniformly dispersed using a mill to obtain a hot-melt ink with a viscosity of 600 mPa s (70°C). rice field.
- the obtained hot-melt ink was gravure printed on a milky-white polyethylene film with a thickness of 15 ⁇ m using a hot-melt ink printer with a polka dot pattern of 120 lines/inch and a depth of 40 ⁇ m.
- the polka dot pattern was hardly visible on the milky white polyethylene film, but when water was dropped on the hot-melt ink printed layer of the film, the blue polka dot pattern immediately emerged. , had an indicator function of discoloration in water.
- Example 9 Using the hot-melt ink obtained in Example 9, a line pattern with a width of 5 mm was printed inline on a milky-white polyethylene film with a thickness of 15 ⁇ m using a hot-melt heat applicator provided in a disposable diaper manufacturing machine. bottom.
- the printed material thus obtained is applied as the outermost film layer of a disposable diaper with the printed layer arranged on the water absorbing layer side, and has a moisture indicator function in which a blue line pattern appears inside the outermost milky white film when urinated. rice field.
- the printed matter thus obtained had a pink polka dot pattern printed on a milky white polyethylene film. has a water-discoloring indicator function that quickly turns purple.
- Numid 846 [trade name (“Nyumid” is a trademark)] (manufactured by Harima Kasei Co., Ltd., polyamide resin, solubility parameter ⁇ 12.2) 10 parts, 50 parts of propylene glycol methyl ether (solubility parameter ⁇ 11.27, boiling point 121°C), Propyl alcohol (solubility parameter ⁇ 11.58, boiling point 97°C) 9.5 parts, Dappo SN-510 (antifoaming agent) 0.5 parts, After uniformly mixing 30 parts of Discoloration Colorant B with a stirrer, the mixture was dispersed with an attritor type mill to obtain a flexographic ink with a viscosity of 520 mPa ⁇ s.
- the obtained flexographic ink was printed on a milky white polyethylene film with a thickness of 15 ⁇ m using an anilox roll of 300 lines/inch using a full-surface plate.
- the printed material thus obtained had a slightly residual blue color, but when a drop of water was placed on the flexographic ink printed layer of the film, it exhibited a bright blue color, and then the blue color faded over time. In other words, this printed matter had visibility as a moisture indicator, but was inferior in the ability to maintain color development over time.
- Numid 846 polyamide resin, solubility parameter ⁇ 12.2) 10 parts, 50 parts of ethanol (solubility parameter ⁇ 12.57, boiling point 78.4°C), Propyl alcohol (solubility parameter ⁇ 11.58, boiling point 97°C) 9.5 parts, Dappo SN-510 (antifoaming agent) 0.5 parts, After uniformly mixing 30 parts of Discoloration Colorant B with a stirrer, the mixture was dispersed with an attritor-type mill to obtain a flexographic ink having a blue appearance and a viscosity of 490 mPa ⁇ s.
- the resulting flexographic ink was printed on a 15 ⁇ m-thick milky white polyethylene film using an anilox roll of 300 lines/inch using a full plate. A blue pattern was printed on the top.
- Vylon 200 (solubility parameter ⁇ 10.5, saturated polyester resin) 25 parts, N-methylpyrrolidone (boiling point 202° C., solubility parameter ⁇ 11.2) 30 parts, N, N-dimethylformamide (boiling point 153°C, solubility parameter ⁇ 12.1) 24 parts, Silicone TSE 350 (silicone antifoam) 1 part, After 20 parts of discoloration coloring agent B was mixed with a mixer, dispersion treatment was performed using a three-roll mill to obtain a screen ink having a blue appearance and a viscosity of 8200 mPa ⁇ s.
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Abstract
Description
前記水溶性染料の0.01~20重量部と、その表面で結露した水及びそれにより溶解した前記水溶性染料を拡散するものでポリエステル系樹脂、アクリル系樹脂、ポリアミド系樹脂、ポリアセタール系樹脂、ポリウレタン系樹脂、エポキシ系樹脂、石油系樹脂、ポリ塩化ビニル樹脂、ケトン系樹脂、セルロース系樹脂から選ばれる疎水性樹脂の3~9重量部及び前記水溶性染料を非溶解の有機溶剤からなるインキビヒクルと、炭酸マグネシウム、炭酸バリウム、水酸化マグネシウム、酸化マグネシウム、酸化カルシウム、酸化チタン、ケイ酸マグネシウム、合成ケイ酸アルミニウム、酸化白土、カオリン、ベントナイト及びセリサイトから選ばれる少なくとも一種類であって前記粉体の水溶性染料を隠蔽し前記拡散した前記水に溶解した前記水溶性染料で染色される隠蔽性粉体の10重量部とを含んでいるインキの100重量部によって、
前記染色により変色する膜状に形成されている結露インジケータが開示されている。
水又は水を含有する液体によって変色し得るものであることを特徴とする変色材料。
上記電子受容性化合物と前記呈色調整剤の溶解度パラメーター(δ)の差がプラスマイナス3以内である上記(1)又は(2)記載の変色材料。
上記前記電子供与性呈色性有機化合物、電子受容性化合物、及び呈色調整剤と前記全固着剤が均一状に混合した上記(1)乃至(4)の何れか1項に記載の変色材料。
前記定着用材料が含有する全揮発性有機溶剤中に、前記沸点が200℃以下の揮発性有機溶剤であって溶解度パラメーター(δ)が12以下であるものを、80重量%以上含有する上記(7)又は(8)記載の変色材料。
所定微小体に保持又は担持されてなり、水又は水を含有する液体によって変色し得るものであることを特徴とする変色性着色剤。
3,6-ジメトキシフルオラン、3,6-ジブトキシフルオラン、3-ジエチルアミノ-7-クロロフルオラン、3-ジエチルアミノ-7フェニルアミノフルオラン、3-クロロ-6-フェニルアミノフルオラン、3-ジエチルアミノ-6,8-ジメチルフルオラン、3-ジエチルアミノ-6-メチル-7-クロロフルオラン、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-(4-ジエチルアミノフェノール)-3-(1-エチル-2-メチルインドール-3イル)フタリド、3-(4-ジエチルアミノ-2-メチル)フェニル-3-(1,2-ジメチルインドール-3-イル)フタリド、3-ジエチルアミノ-7,8-ベンゾフラン、6-(ジメチルアミノ)-3,3-ビス[4-(ジメチルアミノ)フェニル]-1(3H)-イソベンゾフラン、3-(2-メチル-4ジエチルアミノフェノール)-3-(1-メチル-2-メチルインドール-3-イル)フタリド、2-(N-フェニル-N-メチルアミノ)-6-(N-p-トリル-N-エチルアミノ)フルオラン、3-(4-ジエチルアミノ-2-エトキシフェノール)-3-(1-エチル-2-メトキシインドール-3-イル)-4-アザフタリド、7-(4-ジエチルアミノ-2-ヘキシルオキシ-フェニル)-7-(1-エチル-2-メチル-1H-インドール-3-イル)-7H-フロ(3,4-b)ピリジン-5-ワン、3,3-ビス(p-ジエチルアミノフェニル)-6-ジメチルアミノフタリド、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、3,3’-ビス(p-ジメチルアミノフェニル)フタリド、4,4’-ビス(ジエチルアミノ)ベンゾフェノン、3-シクロヘキシルアミノ-6-クロロフルオラン、スピロ[イソベンゾフラン-1(3H),9’-[9H]キサンテン]-3-ワン,6’(プロピルメチルアミノ)-3’-メチル-2’-フェニルアミノ、3-ブチルアミノ-6-メチル-7-アニリノフルオラン、スピロ[イソベンゾフラン-1(3H),9’-[9H]キサンテン]-3-ワン,6’-(イソブチルエチルアミノ)-3’-メチル-2’-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-ワン,6’-(シクロヘキシルメチルアミノ)-3’-メチル-2’-フェニルアミノ、3-ジエチルアミノ-6-メチル-7-キシリジノフルオラン、3-ジエチルアミノ-7-クロロ-アニリノフルオラン、2’-(2-クロロアニリノ)-6’-ジブチルアミノスピロ(フタリド-3,9’-キサンテン)、3,3ビス(1-エチル-2-メチル-インドール-3-イル)フタリド、3-(4-エチルフェノール)アミノ-2-エトキシフェニル)-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-ビスジフェニルアミノフルオラン、5’-クロロ-6’-メチル-3,6-ビスジフェニルアミノフルオラン、2-(ジブチルアミノ)-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-d)ピリミジン-5,1’(3’H)-イソベンゾフラン]-3’-オン、3,3-ビス(4-ジエチルアミノ-2-エトキシフェニル)-4-アザフタリド
等を挙げることができるが、これらに限るものではない。
δ=(ΣΔei/ΣΔvi)1/2 ....[1]
[式[1]中、"Δei"は、原子及び原子団の蒸発エネルギー(cal/mol)、"Δvi"は、モル体積(cm3/mol)である。なお、計算に必要な原子及び原子団の各パラメーターは、R.F.Fedors,Polym.Eng.Sci.14,147(1974)を参照する。]
(i) 対象となる試料を、溶解度パラメーター既知の溶媒に混合し、溶解したか否かを判別する。
(加硫ゴムなどの溶解しない試料は、膨潤や軟化、クラック発生を基に溶解度パラメーターを計算する。)
(ii) 溶解性試験の結果を、溶解度パラメーター(δD(分散項)、δP(極性項)、δH(水素結合項))の三次元空間にプロットする。
(iii) 溶解した座標を含み、溶解しなかった溶媒の座標を含まない球(Hansen球)を求める。
1-メトキシ-2-プロパノール、1-エトキシ-2-プロパノール、エチレングリコール、プロピレングリコール、ジエチレングリコール、ジエチレングリコールモノメチルエーテル、ジプロピレングリコール、ジプロピレングリコールモノメチルエーテル、トリエチレングリコール、トリプロピレングリコール、グリセリン、テトラエチレングリコール、ポリエチレングリコール200、ポリエチレングリコール300、ポリエチレングリコール400、ポリエチレングリコール600、ポリエチレングリコール1000、ポリエチレングリコール2000、ポリエチレングリコール4000、ポリエチレングリコール6000、ポリプロピレングリコール20000、ポリプロピレングリコール400、ポリプロピレングリコール750、1,3プロパンジオール、1,3ブタンジオール、1,5ペンタンジオール、1,6ヘキサンジオール、1,3シクロヘキサンジオール等が挙げられるがこれらに限るものではない。
二酸化ケイ素、シリカゲル、二酸化ケイ素・アルミナ焼成物(または二酸化ケイ素・アルミナ複合体もしくは混合物)、アルミニウムシリケート、ゼオライト、アルミナ、珪藻土類、タルク、ベントナイト類、クレー類、炭酸カルシウム、炭酸マグネシウム、酸性白土、酸化チタン、イオン交換樹脂などを用いることができるが、これらに限るものではない。なお、酸性を呈する多孔性物質については、中和処理をした上で本発明の変色性着色剤に用いることが好ましい。
電熱での加熱が可能なスクリーン版を用いて印刷する熱溶融型スクリーン印刷機、
機上のインクパン(インク溜め容器)とグラビアロール版を加熱して印刷する熱溶融型グラビア印刷機、
機上の金属版とシリコンパッドを加熱して印刷する熱溶融型タンポ印刷機、
機上の塗工ロールとインクを加熱して塗工に供する熱溶融型ナイフ(コンマ)コーター塗工機、及び、熱溶融型ロールコーター塗工機、
インク溜めとインクを加熱して一定の隙間からカーテン状にインクを落下させながら塗工するTダイ塗工機等を挙げることができるが、これらに限るものではない。
生理用品などの所要範囲に設けて、変色による水分検知によって交換時期等を示す
等の、水分検知により交換時期等を示す用途;
食品や飲料の包装材(金属缶、プラスチック容器、ガラス容器を含む)の所要範囲又は食品若しくは食品・飲料の包装材に対する貼着材(ステッカー、ラベル、シール等)若しくはシュリンクラベル等の装着材に設けて、変色によって気温変化や湿度変化による食品又は食品・飲料の包装材の結露や水分接触を検知することにより、食品や飲料の品質変化を示す、
医薬品の包装材(ブリスターパック等を含む)や容器の所要範囲又はそれらに対する貼着材(ステッカー、シール等)若しくはシュリンクラベル等の装着材に設けて、医薬品の保管中又は移送中の変色による水分検知によって品質変化等の可能性を示す
等の、水分検知により品質変化を示す用途;
等を挙げることができるが、これらに限るものではない。
3-(4-ジエチルアミノフェノール)-3-(1-エチル-2-メチルインドール-3イル)フタリド[電子供与性呈色性有機化合物:青色ロイコ色素] 4部、
4,4’-(1,3-ジメチルブチリデン)ビスフェノール[電子受容性化合物:溶解度パラメーターδ1=11.88] 16部、
ポリエチレングリコール400[呈色調整剤:溶解度パラメーターδ2=11.1、蒸気圧9×10-5mmHg[100℃]、水に対する溶解度=∞] 36部
を混合した後、100℃に加熱して更に混合することにより、液状である、水又は水を含有する液体によって変色し得る変色性組成物Aを得た(δ1-δ2=0.78)。
3-(4-ジエチルアミノフェノール)-3-(1-エチル-2-メチルインドール-3イル)フタリド[電子供与性呈色性有機化合物:青色ロイコ色素] 4部、
4,4’-(1,3-ジメチルブチリデン)ビスフェノール[電子受容性化合物:溶解度パラメーターδ1=11.88] 16部、
ポリエチレングリコール400[呈色調整剤:溶解度パラメーターδ2=11.1、蒸気圧9×10-5mmHg[100℃]、水に対する溶解度=∞] 36部
を混合した後、100℃に加熱して更に混合することにより液状の組成物を作成した(δ1-δ2=0.78)。
SIPERNAT 820A[商品名("SIPERNAT"は商標)](粉末状の白色の多孔性物質:EVONIK社製のSiO2AL2O3、pH:8.7、細孔容積=0.47cm3/g、平均細孔径=200オングストローム) 44部
を計量し、この粉末状の多孔性物質を110℃に加熱してミキサー撹拌しながら、この粉末状の多孔性物質に対し、前記100℃の液状の組成物を徐々に投入し且つ十分に攪拌することによって、前記組成物が多孔性物質に担持された白色の粉体を得た。
トルエン(溶解度パラメーターδ9.13、沸点110.6℃) 40部、
メチルシクロヘキサン(溶解度パラメーターδ5.27、沸点101℃) 19.5部、
ダッポーSN-510[商品名("ダッポー"は商標)](サンノプコ(株)製、消泡剤) 0.5部、
変色性着色剤B 20部
を攪拌機で均一に混合後、アトライター型ミル機で分散処理することにより、粘度460mPa・sのグラビアインクを得た。
メチルシクロヘキサン(溶解度パラメーターδ5.27、沸点101℃) 20部、
プロピレングリコールモノメチルエーテルアセテート(沸点146℃、溶解度パラメーターδ8.73) 29.5部、
ダッポーSN-510(消泡剤) 0.5部、
変色性着色剤B 30部
を攪拌機で均一に混合後、アトライター型ミル機で分散処理することにより、粘度820mPa・sのフレキソインクを得た。
YSレジンTO-85[商品名](ヤスハラケミカル(株)製、テルペン樹脂、溶解度パラメーターδ10.0) 10部、
トルエン(溶解度パラメーターδ9.13、沸点110.6℃) 57.5部、
ダッポーSN-510(消泡剤) 0.5部、
変色性着色剤B 30部
を攪拌機で均一に混合後、アトライター型ミル機で分散処理することにより、粘度290mPa・sのフレキソインクを得た。
C-100[商品名](コスモ油化(株)製、沸点150℃、溶解度パラメーターδ9.07、芳香族炭化水素) 30部、
プロピレングリコールモノメチルエーテルアセテート(沸点146℃、溶解度パラメーターδ8.73) 24部、
シリコーンTSE 350[商品名](モメンティブ社製、シリコーン系消泡剤) 1部、
変色性着色剤B 20部
をミキサー混合した後、三本ロールミルで分散処理を行うことにより、粘度7400mPa・sのスクリーンインクを得た。
C-100(沸点150℃、溶解度パラメーターδ9.07、芳香族炭化水素) 30部、
プロピレングリコールモノメチルエーテルアセテート(沸点146℃、溶解度パラメーターδ8.73) 24部、
シリコーンTSE 350(シリコーン系消泡剤) 1部、
SIPERNAT 820A(粉末状の白色の多孔性物質:SiO2AL2O3、pH:8.7、細孔容積=0.47cm3/g、平均細孔径=200オングストローム) 5部
からなるアンダーコートインクを、予め白色紙上の全面にスクリーン印刷した。
パラフィンWax-115[商品名](日本精蝋(株)製、溶解度パラメーターδ8.8、パラフィンWAX)45部、
UNITHOX 450[商品名("UNITHOX"は商標)](ペトロライト社製、親水性化剤)2部、
KS-7716[商品名](シリコーン系消泡剤) 0.2部、
変色性着色剤B 20部
を、100℃に加熱して溶解させた状態において、混合し、ミル機で均一に分散処理することにより、粘度600mPa・s(70℃)のホットメルト型インクを得た。
3-(4-ジエチルアミノフェノール)-3-(1-エチル-2-メチルインドール-3イル)フタリド[電子供与性呈色性有機化合物:青色ロイコ色素] 4部、
4,4’-(1,3-ジメチルブチリデン)ビスフェノール[電子受容性化合物:溶解度パラメーターδ1=11.88] 16部、
ポリエチレングリコール400[呈色調整剤:溶解度パラメーターδ2=11.1、蒸気圧9×10-5mmHg[100℃]、水に対する溶解度=∞] 36部
を混合した後、100℃に加熱して更に混合することにより液状の組成物を作成した(δ1-δ2=0.78)。
サイリシア350[商品名("サイリシア"は商標)](粉末状の白色の多孔性物質:富士シリシア化学(株)製のSiO2、pH:5.96、細孔容積=1.6cm3/g、平均細孔径=210オングストローム) 44部
を計量し、この粉末状の多孔性物質を110℃に加熱してミキサー撹拌しながら、この粉末状の多孔性物質に対し、前記100℃の液状の組成物を徐々に投入し且つ十分に攪拌することによって、前記組成物が多孔性物質に担持された粉体を得たが、この粉体は既に青色に着色していた。
プロピレングリコールメチルエーテル(溶解度パラメーターδ11.27、沸点121℃) 50部、
プロピルアルコール(溶解度パラメーターδ11.58、沸点97℃) 9.5部、
ダッポーSN-510(消泡剤) 0.5部、
変色性着色剤B 30部
を攪拌機で均一に混合後、アトライター型ミル機で分散処理することにより、粘度520mPa・sのフレキソインクを得た。
エタノール(溶解度パラメーターδ12.57、沸点78.4℃) 50部、
プロピルアルコール(溶解度パラメーターδ11.58、沸点97℃) 9.5部、
ダッポーSN-510(消泡剤) 0.5部、
変色性着色剤B 30部
を攪拌機で均一に混合後、アトライター型ミル機で分散処理することにより、外観が青色を呈する粘度490mPa・sのフレキソインクを得た。
N-メチルピロリドン(沸点202℃、溶解度パラメーターδ11.2) 30部、
N、N-ジメチルホルムアミド(沸点153℃、溶解度パラメーターδ12.1) 24部、
シリコーンTSE 350(シリコーン系消泡剤) 1部、
変色性着色剤B 20部
をミキサー混合した後、三本ロールミルで分散処理を行うことにより、外観が青色の粘度8200mPa・sのスクリーンインクを得た。
Claims (20)
- 電子供与性呈色性有機化合物、電子受容性化合物、及び前記電子供与性呈色性有機化合物と電子受容性化合物による呈色を妨げる作用を有する呈色調整剤であって親水性を有するもの、並びに対象物への定着のための親油性固着剤を含む定着用材料を含有する組成物であって、
水又は水を含有する液体によって変色し得るものであることを特徴とする変色材料。 - 上記対象物に定着した状態において、水又は水を含有する液体によって変色し得るものである請求項1記載の変色材料。
- 上記呈色調整剤の溶解度パラメーター(δ)が10以上であり、
上記電子受容性化合物と前記呈色調整剤の溶解度パラメーター(δ)の差がプラスマイナス3以内である請求項1又は2記載の変色材料。 - 上記親油性固着剤の溶解度パラメーター(δ)が12以下である請求項1乃至3の何れか1項に記載の変色材料。
- 上記定着用材料が含有する全固着剤中に、溶解度パラメーター(δ)が12以下である親油性固着剤を、80重量%以上含有し、
上記前記電子供与性呈色性有機化合物、電子受容性化合物、及び呈色調整剤と前記全固着剤が均一状に混合した請求項1乃至4の何れか1項に記載の変色材料。 - 上記の溶解度パラメーター(δ)が12以下である親油性固着剤が、アクリル樹脂、メタクリル樹脂、ウレタン樹脂、スチレンブタジエン共重合樹脂、エチレン酢酸ビニル樹脂、ポリエチレン樹脂、スチレン樹脂、ポリエステル樹脂、石油樹脂、ロジン酸エステル、マイクロスタリンWAX、パラフィンWAX、及び、ポリエチレンWAXからなる群から選ばれた1種又は2種以上である請求項5記載の変色材料。
- 上記親油性固着剤を含む定着用材料が、当該親油性固着剤が揮発性有機溶剤に溶解又は溶解及び分散してなるビヒクルである請求項1乃至6の何れか1項に記載の変色材料。
- 上記親油性固着剤の溶解度パラメーター(δ)及び上記揮発性有機溶剤の溶解度パラメーター(δ)が、何れも12以下である請求項7記載の変色材料。
- 上記定着用材料中の全固着剤が、沸点が200℃以下の揮発性有機溶剤に溶解し又は溶解及び分散しており、
前記定着用材料が含有する全揮発性有機溶剤中に、前記沸点が200℃以下の揮発性有機溶剤であって溶解度パラメーター(δ)が12以下であるものを、80重量%以上含有する請求項7又は8記載の変色材料。 - ホットメルト型印刷インク、有機溶剤蒸発乾燥型印刷インク、熱硬化型ドライオフセットインク、又は静電潜像現像用トナーである請求項1乃至9の何れか1項に記載の変色材料。
- 少なくとも電子供与性呈色性有機化合物、電子受容性化合物、及び前記電子供与性呈色性有機化合物と電子受容性化合物による呈色を妨げる作用を有する呈色調整剤であって親水性を有するものからなり、水又は水を含有する液体によって変色し得る変色性組成物が、
所定微小体に保持又は担持されてなり、水又は水を含有する液体によって変色し得るものであることを特徴とする変色性着色剤。 - 上記所定微小体は、上記保持又は担持している変色性組成物に水又は水を含有する液体が接し得るものである請求項11記載の変色性着色剤。
- 上記所定微小体のうち、少なくとも上記変色性組成物を保持又は担持する部分が、塩基性又は中性を呈する請求項11又は12記載の変色性着色剤。
- 上記所定微小体が多孔性物質である請求項11乃至13の何れか1項に記載の変色性着色剤。
- 上記多孔性物質の細孔容積が0.3cm3/g以上である請求項14記載の変色性着色剤。
- 上記多孔性物質の平均細孔径が20オングストローム以上である請求項14又は15記載の変色性着色剤。
- 請求項11乃至16の何れか1項に記載の変色性着色剤と、対象物への定着のための親油性固着剤を含む定着用材料を含有し、水又は水を含有する液体によって変色し得るものである変色材料。
- 上記対象物に定着した状態において、水又は水を含有する液体によって変色し得るものである請求項17記載の変色材料。
- ホットメルト型印刷インク、有機溶剤蒸発乾燥型印刷インク、熱硬化型ドライオフセットインク、又は静電潜像現像用トナーである請求項17又は18記載の変色材料。
- 請求項1乃至9並びに17及び18の何れか1項に記載の水又は水を含有する液体によって変色し得る変色材料が定着してなる物品。
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- 2021-08-21 EP EP21954929.2A patent/EP4389831A1/en active Pending
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