WO2013022044A1 - インクジェット捺染用グレーインク組成物及びそれを用いた繊維の捺染方法 - Google Patents
インクジェット捺染用グレーインク組成物及びそれを用いた繊維の捺染方法 Download PDFInfo
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- WO2013022044A1 WO2013022044A1 PCT/JP2012/070261 JP2012070261W WO2013022044A1 WO 2013022044 A1 WO2013022044 A1 WO 2013022044A1 JP 2012070261 W JP2012070261 W JP 2012070261W WO 2013022044 A1 WO2013022044 A1 WO 2013022044A1
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/30—Ink jet printing
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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
- C09B62/00—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves
- C09B62/02—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group directly attached to a heterocyclic ring
- C09B62/04—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group directly attached to a heterocyclic ring to a triazine ring
- C09B62/08—Azo dyes
- C09B62/085—Monoazo 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
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/328—Inkjet printing inks characterised by colouring agents characterised by dyes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/66—Natural or regenerated cellulose using reactive dyes
- D06P3/663—Natural or regenerated cellulose using reactive dyes reactive group directly attached to heterocyclic group
Definitions
- the present invention relates to an ink composition for ink jet textile printing and an ink jet textile printing method using the same, and more particularly to a reactive dye ink for ink jet textile printing excellent in color development, particularly excellent in color reproducibility in a gray hue range and ejecting.
- the present invention relates to an ink composition for ink jet printing having good stability, and a method for ink jet printing of cellulosic fibers using the ink composition.
- textile printing using an ink jet printer requires no plate making process and can shorten the process; the digitized design can be printed directly via a computer.
- merits such as being able to produce a wide variety of products even in small quantities; being able to drastically reduce the waste liquid of dye color paste, etc.
- problems such as slow printing processing; difficult to reproduce dark colors; and many of them are used in the production of sample plates and small-scale production. .
- an ink set comprising four dye inks of black, yellow, magenta, and cyan is used.
- light magenta, light cyan, and gray are used.
- Golden Yellow, Orange, Red, Blue, Violet, Green and other special colors are generally used for printing, and it is possible to provide prints with high image quality and high robustness, as well as ejection stability.
- Various gray inks for ink jet textile printing have been proposed to meet this demand.
- the conventional gray ink has a problem that the density at the time of coloring is different from the steaming time.
- Patent Documents 1 to 3 have been proposed as black inks and Patent Document 4 has been proposed as gray inks, but gray inks containing reactive dyes as pigments and having sufficient color reproducibility have not yet been provided. .
- gray pigments suitable for reactive dye inks for textile printing include C.I. I. Reactive Yellow 95, C.I. I. Reactive Orange 12, C.I. I. Reactive Red 31, C.I. I. Reactive Blue 15: 1, C.I. I. Reactive Black 8 etc. are known.
- the present invention provides a gray ink composition for ink jet printing that has high color reproducibility, particularly excellent color reproducibility in the gray hue range, and good ejection stability.
- a gray ink composition for printing containing a specific reactive dye as a pigment is excellent in color reproducibility, particularly in the gray hue range, and is ejected.
- the present invention was completed by finding that it is excellent in stability.
- the present invention 1) A gray ink composition for inkjet printing, which contains a compound represented by the following formula (1) or a salt thereof in the coloring matter: 2) In addition to C.I. I. The gray ink composition for inkjet printing according to 1) above, which contains Reactive Black 8; 3) Furthermore, the gray ink composition for inkjet textile printing according to the above 1) or 2) containing a water-soluble organic solvent, 4) Furthermore, the gray ink composition for inkjet printing according to any one of 1) to 3) above, which contains tris (hydroxymethyl) aminomethane as a pH adjuster, 5) The gray ink composition for inkjet printing according to any one of 1) to 4), wherein the viscosity at 25 ° C.
- Ink set for inkjet printing comprising the gray ink composition for inkjet printing according to any one of 1) to 5), cyan ink composition, magenta ink composition, yellow ink composition, and black ink composition
- 7) Using the gray ink composition for inkjet textile printing according to any one of the above 1) to 5) as an ink, and applying the ink to a cellulosic fiber by an inkjet printer; A step B of reacting and fixing the pigment in the ink applied in the step A to the cellulosic fiber by heat; Step C for washing unfixed pigment remaining in the cellulosic fiber, and a printing method for cellulosic fiber
- the above 7) further comprising a fiber pretreatment step D in which an aqueous solution containing at least one paste material, an alkaline substance, an anti-reduction agent, and a hydrotropic agent is applied to the cellulosic fiber before applying ink.
- the gray ink composition for inkjet textile printing and the ink set for inkjet textile printing of the present invention are excellent in color reproducibility particularly in the hue range of gray and also in ejection stability. Therefore, according to the printing method using this, a dyed fabric with high color reproducibility can be obtained.
- the present invention includes the compound represented by the formula (1) or a salt of the compound, but it is complicated to always write both of them together with “the compound or a salt thereof”. Therefore, unless otherwise specified, for convenience, both the “compound or its salt” and the “compound” are simply abbreviated as follows. Similarly, the “gray ink composition” is simply described as “ink composition” below.
- the ink composition of the present invention is used for inkjet printing of cellulosic fibers and fabrics composed of the fibers (hereinafter referred to as “cellulosic fibers” for convenience).
- the ink composition of the present invention contains a compound represented by the above formula (1) in a pigment.
- the ink composition of the present invention can achieve high color reproducibility and high quality dyeing in the gray hue range.
- This compound can be synthesized by the method described in JP-B-7-94617.
- the content of the compound represented by the formula (1) is preferably 0.01 to 1% by mass, more preferably 0.02 to 0.5% by mass. It is.
- the ink composition of the present invention contains other coloring matter for the purpose of color tone adjustment.
- pigments (reactive dyes) used for color tone adjustment include C.I. I. Orange dyes such as Reactive Orange 5, 9, 12, 13, 35, 45, 99; I. Brown dyes such as Reactive Brown 2, 8, 9, 17, 33; I. Red dyes such as Reactive Red 3, 3: 1, 4, 13, 24, 29, 31, 33, 125, 151, 206, 218, 226, 245; I. Violet dyes such as Reactive Violet 1, 24; I. Blue dyes such as Reactive Blue 2, 5, 10, 13, 14, 15, 15: 1, 49, 63, 71, 72, 75, 162, 176; I. Green dyes such as Reactive Green 5, 8, 19; I.
- black dyes such as Reactive Black 1, 8, 23, and 39, and it is particularly preferable to add orange, red, blue, and black dyes.
- Red dyes and C.I. I. This is a case where purple to bluish black containing at least 2 to 3 kinds of violet dyes such as Reactive Violet 1 and 24 is used. From the viewpoint of easy color adjustment, C.I. I.
- C.I. I. Reactive Black 8 is useful because it can easily adjust the desired color tone with a small amount of addition and is excellent in color reproducibility in the gray hue range.
- the content of other pigments is preferably 0.5 to 10% by mass, more preferably 1 to 5% by mass.
- the reactive dye dyes such as powder, lump, wet cake, etc. can be used.
- Commercially available reactive dyes have various qualities such as powder for industrial dyeing, liquid products for textile printing, and ink jet textile printing, etc., with different production methods, purity, etc., and inorganic salts such as sodium chloride and sodium sulfate. Some contain a considerable amount (approximately 10 to 40% by mass in the total mass of the product).
- the ink composition of the present invention is preferably prepared using a material having as few impurities as possible in order to reduce adverse effects on storage stability and ejection accuracy from an ink jet printer.
- water that is not subjected to purification operations contains metal ions such as calcium ions and magnesium ions, so even when such water is used for the preparation of the ink composition, the ions and the like are mixed even in a trace amount.
- metal ions such as calcium ions and magnesium ions
- inorganic impurities contained in the ink composition it is preferable to remove inorganic impurities contained in the ink composition as much as possible by using a known method such as an ultrafiltration method, a reverse osmosis method, or an ion exchange method.
- the content of inorganic impurities contained in the total mass of the ink composition is usually 1% by mass or less, preferably 0.5% by mass or less, more preferably 0.1% by mass or less.
- the salt of the compound represented by the above formula (1) is an inorganic or organic cation salt.
- inorganic salts include alkali metal salts, alkaline earth metal salts, and ammonium salts
- preferred inorganic salts are lithium, sodium, potassium salts, and ammonium salts.
- organic cation salts include, but are not limited to, quaternary ammonium ion salts represented by the following formula (2).
- a free acid, its tautomer, and various salts thereof may be a mixture.
- any combination such as a mixture of sodium salt and ammonium salt, a mixture of free acid and sodium salt, a mixture of lithium salt, sodium salt, and ammonium salt may be used.
- the physical properties such as solubility may differ, and if necessary, select the type of salt as appropriate, or change the ratio when containing multiple salts, etc. Mixtures having suitable physical properties can also be obtained.
- Z 1 , Z 2 , Z 3 , and Z 4 each independently represent a group selected from the group consisting of a hydrogen atom, an alkyl group, a hydroxyalkyl group, and a hydroxyalkoxyalkyl group.
- Specific examples of the alkyl group of Z 1 , Z 2 , Z 3 , Z 4 in the above formula (2) include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, etc.
- hydroxyalkyl group examples include hydroxy C1-C4 alkyl such as hydroxymethyl, hydroxyethyl, 3-hydroxypropyl, 2-hydroxypropyl, 4-hydroxybutyl, 3-hydroxybutyl, 2-hydroxybutyl and the like.
- hydroxyalkoxyalkyl groups include hydroxyethoxymethyl, 2-hydroxyethoxyethyl, 3-hydroxyethoxypropyl, 2-hydroxyethoxypropyl, 4-hydroxyethoxybutyl, 3-hydroxyethoxybutyl, 2- Hydroxyethoxy And hydroxy C1-C4 alkoxy C1-C4 alkyl groups such as sibutyl. Of these, hydroxyethoxy C1-C4 alkyl is preferred.
- a hydrogen atom methyl; hydroxy C1-C4 alkyl group such as hydroxymethyl, hydroxyethyl, 3-hydroxypropyl, 2-hydroxypropyl, 4-hydroxybutyl, 3-hydroxybutyl, 2-hydroxybutyl; Hydroxyethoxy C1-C4 alkyl groups such as hydroxyethoxymethyl, 2-hydroxyethoxyethyl, 3-hydroxyethoxypropyl, 2-hydroxyethoxypropyl, 4-hydroxyethoxybutyl, 3-hydroxyethoxybutyl, 2-hydroxyethoxybutyl; etc. Is mentioned.
- salting out is carried out by adding a desired inorganic salt or organic cation salt to the reaction solution after the reaction, or hydrochloric acid. It is isolated in the form of a free acid by adding a mineral acid such as water, acid water, an aqueous organic medium, etc. as necessary to remove inorganic salts, and then the desired in an aqueous medium. By neutralizing with an inorganic or organic base, a corresponding salt solution can be obtained.
- acidic water refers to water obtained by dissolving a mineral acid such as sulfuric acid or hydrochloric acid or an organic acid such as acetic acid in water.
- the aqueous organic medium refers to water-containing organic substances miscible with water, so-called organic solvents miscible with water, and specific examples include water-soluble organic solvents described later.
- organic substances not normally classified as solvents include urea and saccharides.
- the inorganic salt include alkali metal salts such as lithium chloride, sodium chloride and potassium chloride, and ammonium salts such as ammonium chloride and ammonium bromide.
- organic cation salts include halogen salts of organic amines.
- inorganic bases include, for example, alkali metal hydroxides such as lithium hydroxide, sodium hydroxide, and potassium hydroxide, ammonium hydroxide, or alkali metal carbonates such as lithium carbonate, sodium carbonate, and potassium carbonate.
- alkali metal hydroxides such as lithium hydroxide, sodium hydroxide, and potassium hydroxide
- ammonium hydroxide or alkali metal carbonates such as lithium carbonate, sodium carbonate, and potassium carbonate.
- alkali metal carbonates such as lithium carbonate, sodium carbonate, and potassium carbonate.
- organic base include, but are not limited to, organic amines such as salts of quaternary ammoniums represented by the above formula (2) such as diethanolamine and triethanolamine.
- the ink composition of the present invention is prepared using water as a medium, and may optionally contain a water-soluble organic solvent and an ink preparation agent as long as the effects of the present invention are not impaired.
- the water-soluble organic solvent may have a function as a viscosity modifier or a drying inhibitor, it is preferably contained in the ink composition of the present invention.
- the ink composition of the present invention is composed of an ink composition containing a reactive dye, the ink composition does not react with the dye in the ink composition and is intended to prevent clogging at nozzles in an inkjet printer. Those having a high wetting effect are preferred.
- the ink preparation agent examples include antiseptic / antifungal agents, pH adjusting agents, chelating reagents, rust preventive agents, ultraviolet absorbers, viscosity adjusting agents, dye dissolving agents, antifading agents, surface tension adjusting agents, antifoaming agents, etc.
- Known additives may be mentioned.
- the surface tension of the ink composition is preferably adjusted with various surfactants, that is, an anionic surfactant, a cationic surfactant, an amphoteric surfactant, a nonionic surfactant, and the like.
- the content of the water-soluble organic solvent is 0 to 60% by mass, preferably 10 to 50% by mass, and the content of the ink preparation agent is 0 to 10% by mass, based on the total mass of the ink composition of the present invention. Preferably, it is 0.05 to 10% by mass.
- the balance other than the compound represented by the above formula (1), the other pigment, the water-soluble organic solvent, and the ink preparation agent is water.
- water-soluble organic solvent examples include polyhydric alcohols and pyrrolidones.
- polyhydric alcohols examples include C2-C6 polyhydric alcohols having 2 to 3 alcoholic hydroxyl groups, poly C2-C3 alkylene glycols having a repeating unit of 4 or more and a molecular weight of about 20,000 or less, preferably a liquid polyhydric alcohol.
- alkylene glycol examples include alkylene glycol. Among these, C2-C3 alkylene glycol and pyrrolidone are preferable, and the former is more preferable.
- the water-soluble organic solvent includes substances that are solid at room temperature, such as trimethylolpropane. Even if the substance or the like is solid, it shows water solubility, and an aqueous solution containing the substance or the like shows the same properties as the water-soluble organic solvent and can be used with the expectation of the same effect. Therefore, in this specification, for the sake of convenience, such a solid substance is included in the category of a water-soluble organic solvent as long as it can be used in expectation of the same effect as described above.
- water-soluble organic solvent examples include C2-C6 polyhydric alcohols having 2 to 3 alcoholic hydroxyl groups such as glycerin, 1,3-pentanediol and 1,5-pentanediol; diglycerin, polyglycerin and the like.
- antiseptic / antifungal agent examples include organic sulfur, organic nitrogen sulfur, organic halogen, haloallylsulfone, iodopropargyl, N-haloalkylthio, benzothiazole, nitrile, pyridine, 8-oxyquinoline, isothiazoline, dithiol, pyridine oxide, nitropropane, organotin, phenol, quaternary ammonium salt, triazine, thiadiazine, anilide, adamantane, dithiocarbamate, bromo Indanone compound, benzyl bromacetate compound, inorganic salt compound and the like can be mentioned.
- organic halogen compound examples include sodium pentachlorophenol.
- Examples of pyridine oxide compounds include sodium 2-pyridinethiol-1-oxide.
- Examples of the isothiazoline compounds include 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazoline-3-one, 5 -Chloro-2-methyl-4-isothiazolin-3-one magnesium chloride, 5-chloro-2-methyl-4-isothiazolin-3-one calcium chloride, 2-methyl-4-isothiazolin-3-one calcium chloride, etc. Can be mentioned.
- antiseptic / antifungal agents include sodium acetate, sodium dehydroacetate, sodium sorbate, sodium benzoate, etc .; and trade names Proxel RTM GXL (S) and Proxel RTM XL-2 (S) manufactured by Arch Chemical Etc., respectively.
- RTM means a registered trademark.
- any substance can be used as long as it can control the pH of the ink in the range of 6.0 to 11.0 for the purpose of improving the storage stability of the ink.
- alkanolamines such as diethanolamine and triethanolamine
- hydroxides of alkali metals such as lithium hydroxide, sodium hydroxide and potassium hydroxide
- ammonium hydroxides carbonates of alkali metals such as lithium carbonate, sodium carbonate and potassium carbonate Salts
- aminosulfonic acids such as taurine; and the like.
- a particularly preferred pH adjusting agent is tris (hydroxymethyl) aminomethane.
- the content of tris (hydroxymethyl) aminomethane in the total mass of the ink composition of the present invention is usually 0.1 to 2% by mass, preferably 0.3 to 1.5% by mass.
- chelating reagent examples include disodium ethylenediaminetetraacetate, sodium nitrilotriacetate, sodium hydroxyethylethylenediaminetriacetate, sodium diethylenetriaminepentaacetate, sodium uracil diacetate, and the like.
- rust preventive examples include acid sulfite, sodium thiosulfate, ammonium thioglycolate, diisopropylammonium nitrite, pentaerythritol tetranitrate, dicyclohexylammonium nitrite and the like.
- the ultraviolet absorber examples include benzophenone compounds, benzotriazole compounds, cinnamic acid compounds, triazine compounds, and stilbene compounds.
- a compound that absorbs ultraviolet rays such as a benzoxazole-based compound and emits fluorescence, a so-called fluorescent whitening agent, and the like can also be used.
- examples of the viscosity modifier include water-soluble polymer compounds in addition to water-soluble organic solvents, and examples thereof include polyvinyl alcohol, cellulose derivatives, polyamines, and polyimines.
- dye solubilizer examples include urea, ⁇ -caprolactam, ethylene carbonate, and the like. Of these, urea is preferably used.
- the anti-fading agent is used for the purpose of improving image storage stability.
- various organic and metal complex antifading agents can be used.
- organic anti-fading agents include hydroquinones, alkoxyphenols, dialkoxyphenols, phenols, anilines, amines, indanes, chromans, alkoxyanilines, heterocycles, etc. Includes nickel complexes and zinc complexes.
- Examples of the surface tension adjusting agent include surfactants, and examples include anionic surfactants, amphoteric surfactants, cationic surfactants, and nonionic surfactants.
- anionic surfactants include alkyl sulfocarboxylates, ⁇ -olefin sulfonates, polyoxyethylene alkyl ether acetates, N-acyl amino acids and salts thereof, N-acyl methyl taurate, alkyl sulfate polyoxyalkyl ethers Sulfate, alkyl sulfate polyoxyethylene alkyl ether phosphate, rosin acid soap, castor oil sulfate ester, lauryl alcohol sulfate ester, alkylphenol type phosphate ester, alkyl type phosphate ester, alkyl aryl sulfonate, diethyl sulfosuccinate Salts, diethylhexylsulfosuccinate, dioctylsulfosuccinate and the like.
- Examples of the cationic surfactant include 2-vinylpyridine derivatives and poly-4-vinylpyridine derivatives.
- Amphoteric surfactants include lauryldimethylaminoacetic acid betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine, polyoctylpolyaminoethylglycine, imidazoline derivatives, etc. Is mentioned.
- Nonionic surfactants include ethers such as polyoxyethylene nonylphenyl ether, polyoxyethylene octylphenyl ether, polyoxyethylene dodecylphenyl ether, polyoxyethylene oleyl ether, polyoxyethylene lauryl ether, polyoxyethylene alkyl ether; Ester systems such as polyoxyethylene oleate, polyoxyethylene distearate, sorbitan laurate, sorbitan monostearate, sorbitan monooleate, sorbitan sesquioleate, polyoxyethylene monooleate, polyoxyethylene stearate; 2,4,7,9-tetramethyl-5-decyne-4,7-diol, 3,6-dimethyl-4-octyne-3,6-diol, 3,5-dimethyl -1-hexyne-3-acetylene glycol ol (alcohol) based; Nissin Chemical Industry Co., Ltd .: trade name Surfyno
- antifoaming agents include highly oxidized oils, glycerin fatty acid esters, fluorines, and silicone compounds.
- the surface tension of the ink composition of the present invention is usually 20 to 40 mN / m, more preferably 25 to 35 mN / m.
- the viscosity of the ink composition of the present invention is preferably 3 to 20 mPa ⁇ s, more preferably 3 to 8 mPa ⁇ s.
- the discharge amount of the printer to be used, the response speed, the flight characteristics of the ink droplets, the characteristics of the ink jet head, and the like are taken into consideration, and it is preferable to adjust the value within the above range.
- the ink composition of the present invention there is no particular limitation on the order of dissolving each agent such as an additive.
- the water used for preparing the ink composition is preferably water with few impurities such as ion exchange water and distilled water.
- fine filtration may be performed using a membrane filter or the like to remove impurities in the ink composition.
- the pore size of the filter used for microfiltration is usually 1 to 0.1 ⁇ m, preferably 0.8 to 0.1 ⁇ m.
- full-color printing can be realized by using an ink set including five ink compositions including cyan, magenta, yellow, and black.
- the dyes contained in the cyan, magenta, yellow, and black ink compositions may be known ones and are not particularly limited, but are preferably dyes rather than pigments, and more preferably reactive dyes.
- Examples of the coloring matter contained in the yellow ink composition that can be used when the ink set is provided with the above five-color ink composition include C.I. I. Reactive Yellow 2, 3, 18, 81, 84, 85, 95, 99, 102, etc., and C.I. I. Reactive Yellow 2, 95 is preferable.
- the content of the coloring matter in the total mass of the yellow ink composition is usually 0.5 to 20% by mass, preferably 7 to 15% by mass.
- Examples of the dye contained in the cyan ink composition that can be used when used as an ink set including the above five-color ink compositions include C.I. I. Reactive Blue 2, 5, 10, 13, 14, 15, 15: 1, 49, 63, 71, 72, 75, 162, 176 and the like. I. Reactive Blue 15: 1 is preferred.
- the content of the coloring matter in the total mass of the cyan ink composition is usually 0.5 to 20% by mass, preferably 7 to 15% by mass.
- Examples of the dye contained in the magenta ink composition that can be used when used as an ink set including the above five-color ink compositions include C.I. I. Reactive Red 3, 3: 1, 4, 13, 24, 29, 31, 33, 125, 151, 206, 218, 226, 245 and the like. I. Reactive Red 31 and 245 are preferable.
- the content of the coloring matter in the total mass of the magenta ink composition is usually 0.5 to 20% by mass, preferably 7 to 15% by mass.
- Examples of the dye contained in the black ink composition that can be used when used as an ink set including the above five-color ink compositions include C.I. I. Examples thereof include black dyes such as Reactive Black 1, 8, 23, 39. I. Reactive Black 8 is preferable. Further, the content of the coloring matter in the total mass of the black ink composition is usually 0.5 to 20% by mass, preferably 10 to 20% by mass. In this black ink composition, a mixed dye composed mainly of a blue dye and an orange and red dye can be used as a pigment. Further, for the purpose of adjusting the color tone, other dyes may be further added to the black ink composition.
- C.I. I. Orange dyes such as Reactive Orange 5, 9, 12, 13, 35, 45, 99; I. Brown dyes such as Reactive Brown 2, 8, 9, 17, 33; I. Red dyes such as Reactive Red 3, 3: 1, 4, 13, 24, 29, 31, 33, 125, 151, 206, 218, 226, 245; I. Violet dyes such as Reactive Violet 1, 24; I. Blue dyes such as Reactive Blue 2, 5, 10, 13, 14, 15, 15: 1, 49, 63, 71, 72, 75, 162, 176; I. Examples include green dyes such as Reactive Green 5, 8, and 19. Particularly, orange, red, and blue dyes are preferable. Further, the total content of the dyes in the total mass of the black ink composition may be in the above range including these compoundable dyes.
- an ink set comprising each of the gray, cyan, magenta, yellow, and black ink compositions, light yellow, light magenta, light cyan, blue, violet, red, orange as necessary
- a 6 to 14 color ink set to which an ink composition generally called “special color” such as green, golden yellow, etc. is added can be used to realize printing with richer hues.
- the light yellow, light magenta, and light cyan ink compositions each have a reduced concentration of dye contained in each of the three color ink compositions, that is, the yellow, magenta, and cyan ink compositions. It is preferable to use a prepared ink composition.
- the dye concentration in each of the light yellow, light magenta and light cyan ink compositions is usually 1 ⁇ 2 or less, preferably 1 ⁇ 4 or less, on a mass basis with respect to the dye concentration in each of the yellow, magenta and cyan ink compositions. More preferably, it is 1/6 or less, and the lower limit is about 1/20, preferably 1/10.
- the pigment contained in the light yellow ink, light magenta ink, and light cyan ink ink composition is preferably the same as the above-described three-color ink set, that is, the yellow, magenta, and cyan ink compositions.
- examples of the pigment contained in the orange ink composition include C.I. I. Reactive Orange 5, 9, 12, 13, 35, 45, 99 and the like. I. Reactive Orange 12, 13 is preferable.
- the content of the coloring matter in the total mass of the orange ink composition is usually 0.5 to 20% by mass, preferably 7 to 15% by mass.
- examples of the dye contained in the golden yellow ink composition include C.I. I. Reactive Orange 5, 9, 12, 13, 35, 45, 99 and the like. I. Reactive Orange 12, 13 is preferable.
- the content of the coloring matter in the total mass of the golden yellow ink composition is usually 0.5 to 20% by mass, preferably 7 to 15% by mass.
- examples of the pigment contained in the red ink composition include C.I. I. Reactive Red 3, 3: 1, 4, 13, 24, 29, 31, 33, 125, 151, 206, 218, 226, 245 and the like. I. Reactive Red 3: 1, 24 is preferable.
- the content of the coloring matter in the total mass of the red ink composition is usually 0.5 to 20% by mass, preferably 7 to 15% by mass.
- examples of the pigment contained in the blue ink composition include C.I. I. Reactive Blue 2, 5, 10, 13, 14, 15, 15: 1, 49, 63, 71, 72, 75, 162, 176 and the like.
- I. Reactive Blue 49 is preferred.
- the content of the coloring matter in the total mass of the blue ink composition is usually 0.5 to 20% by mass, preferably 7 to 15% by mass.
- examples of the pigment contained in the green ink composition include C.I. I. Reactive Green 5, 8, 19 etc. are mentioned. Further, the content of the coloring matter in the total mass of the green ink composition is usually 0.5 to 20% by mass, preferably 7 to 15% by mass.
- examples of the dye contained in the violet ink composition include C.I. I. Reactive Violet 1, 24 etc. are mentioned.
- the content of the coloring matter in the total mass of the violet ink composition is usually 0.5 to 20% by mass, preferably 7 to 15% by mass.
- Cyan, magenta, yellow, and black ink compositions used in the ink set, and ink compositions of special colors such as light yellow, light magenta, light cyan, blue, violet, red, orange, green, and golden yellow are also used in the ink of the present invention. Similar to the composition, it may contain a water-soluble organic solvent and an ink adjusting agent.
- the types of the water-soluble organic solvent and the ink preparation agent contained in these ink compositions may be independently selected from the above, but it is preferable to use the same one. Further, the content of the coloring matter, water-soluble organic solvent, ink preparation agent, etc. in each ink composition need not be the same for each color, and the viscosity of the composition, etc., depending on the nature of the coloring matter contained, etc. It is preferable to adjust appropriately while considering the above.
- the inkjet printing method of the present invention is a method of printing on a cellulosic fiber, preferably a fabric made of the fiber, using the ink composition of the present invention.
- a cellulosic fiber preferably a fabric made of the fiber
- the ink composition of the present invention There are no particular restrictions on the ink nozzles used at that time, and they can be appropriately selected according to the purpose.
- the fabric those mainly composed of cellulosic fibers are preferable, and examples thereof include natural fibers such as cotton and hemp, regenerated cellulose fibers such as rayon, and blended fibers containing these.
- Examples of the method for printing on cellulosic fibers using the ink composition of the present invention include, for example, a step of using the ink composition of the present invention as an ink and applying the ink to the cellulosic fibers with an ink jet printer (step A); Three steps: a step of reacting and fixing the dye in the ink applied in step A to the cellulosic fiber by heat (step B); a step of washing the unfixed pigment remaining in the cellulosic fiber (step C); The method of performing sequentially is mentioned.
- the method further includes a step of performing a pretreatment such as bleeding prevention on the cellulosic fiber (step D).
- a container filled with the above ink composition is loaded in a predetermined position of an ink jet printer, and each ink composition is used as ink in a normal ink jet recording method, and the ink composition is used according to a recording signal.
- the ink may be applied to the cellulosic fiber by ejecting ink droplets.
- the ink jet recording method includes yellow, magenta, cyan, and black together with the ink composition of the present invention, and if necessary, light yellow, light magenta, light cyan, orange, blue, violet, red, green, golden yellow, etc. These ink compositions can be used in combination.
- the ink composition of each color may be injected into each container, and these containers may be used by being loaded into predetermined positions of the ink jet printer.
- Some inkjet printers use, for example, a piezo method using mechanical vibration; a bubble jet (registered trademark) method using bubbles generated by heating; and the like.
- any method can be used.
- step B that is, the step of reactively fixing the coloring matter
- the fiber is allowed to stand at room temperature to 130 ° C. for 0.5 to 30 minutes.
- Examples include a method of preliminarily drying, then performing a steaming treatment, and fixing the pigment to the fiber under wet heat conditions.
- the steaming treatment it is preferable to place in an environment having a humidity of 80 to 100% and a temperature of 95 to 105 ° C. for 5 to 20 minutes.
- step C that is, the step of washing the unfixed pigment
- An active agent may be included.
- the printed matter can be obtained by drying the fiber at 50 to 120 ° C. for 5 to 30 minutes.
- the above step D that is, the step of pre-treating the cellulosic fiber is not essential in the printing method of the present invention, but from the viewpoint of preventing the dye from bleeding in the printed matter, the step D It is preferable to perform the three steps A to C described above on the pretreated cellulose fiber.
- an aqueous solution of a pretreatment agent containing a paste, an alkaline substance, an anti-reduction agent, and a hydrotropic agent is used as a pretreatment liquid, and is applied to the cellulosic fiber, preferably the fiber is pretreated. It is preferable to impregnate with.
- Examples of the paste include natural gums such as guar and locust bean, starches, seaweed such as sodium alginate and fungi, plant skins such as pectic acid, methyl fibrin, ethyl fibrin, hydroxyethylcellulose, carboxymethylcellulose, etc. Fiber derivatives, modified starches such as carboxymethyl starch, synthetic glues such as polyvinyl alcohol, polyacrylates, and the like. Preferably, sodium alginate is used.
- alkaline substance examples include an alkali metal salt of an inorganic acid or an organic acid; a salt of an alkaline earth metal; a compound that liberates alkali when heated; an inorganic or organic alkali metal hydroxide and Alkali metal salts are preferred, and examples include sodium compounds and potassium compounds. Specific examples include, for example, alkali metal hydroxides such as sodium hydroxide and calcium hydroxide; inorganic compounds such as sodium carbonate, sodium bicarbonate, potassium carbonate, sodium dihydrogen phosphate, disodium hydrogen phosphate, and sodium phosphate And alkali metal salts of organic compounds such as sodium formate and sodium trichloroacetate. Preferably, sodium hydrogencarbonate is used.
- sodium metanitrobenzene sulfonate is preferable.
- hydrotropic agent examples include ureas such as urea and dimethylurea, and urea is preferable.
- pretreatment agents the paste, alkaline substance, anti-reduction agent, and hydrotropic agent
- each pretreatment agent may be used alone or in combination.
- the mixing ratio of each pretreatment agent in the total mass of the pretreatment liquid is, for example, 0.5 to 5% for the paste, 0.5 to 5% for sodium hydrogencarbonate, and metanitrobenzenesulfonic acid on the basis of mass.
- Sodium is 0 to 5%
- urea is 1 to 20%
- the balance is water.
- Examples of the application of the pretreatment agent to the cellulose fiber include a padding method.
- the padding drawing ratio is preferably about 40 to 90%, more preferably about 60 to 80%.
- the compound represented by the above formula (1) is excellent in solubility in water or a water-soluble organic solvent. Moreover, it has the characteristic that the filterability with respect to a membrane filter, for example in the process of manufacturing the ink composition of this invention is favorable. In addition, the ink composition of the present invention has very good storage stability without solid deposition, physical property change, hue change, etc. after long-term storage. Even when the ink composition of the present invention is used as an inkjet ink, solid precipitation due to drying of the ink composition in the vicinity of the nozzles is very unlikely to occur, and the ejector (recording head) is not blocked.
- the ink composition of the present invention uses a continuous ink jet printer, and is used physically even when the ink is recirculated at a relatively long time interval or intermittently used by an on-demand ink jet printer. No change in properties.
- the fabric printed with the ink composition of the present invention is particularly excellent in water resistance and light resistance, and for this reason, it is excellent in long-term storage stability of the dyed fabric.
- color reproducibility is better than that of conventional inks, and color reproducibility is particularly excellent in the gray hue range.
- the ink composition of the present invention is extremely useful for various recording ink applications, particularly for inkjet textile printing of cellulosic fibers.
- reaction temperature was the internal temperature.
- ⁇ max maximum absorption wavelength
- Comparative Examples 1 to 4 In place of the yellow dye used in Reference Example 1, C.I. I. Reactive Yellow 95, C.I. I. Reactive Orange 12 as C.I. I. Reactive Red 31 is used as a blue dye. I. Ink compositions of Comparative Examples 1 to 4 were prepared in the same manner as in Reference Example 1 except that Reactive Blue 15: 1 was used.
- An ink jet printer PX-101 (ink jet printer PX-101) using the inks of Reference Examples 1 and 2 on a cotton cloth pretreated by a padding method using an aqueous solution containing sodium alginate, urea, sodium bicarbonate, and sodium metanitrobenzenesulfonate.
- a solid pattern was printed by Seiko Epson. This printed matter was subjected to intermediate drying at 60 to 80 ° C., and then subjected to a steaming treatment at 100 to 103 ° C. for 2, 5, 8, 15, and 20 minutes. After washing with water, it was washed with boiling water at 95 to 100 ° C.
- test dyed cloth 1-1, 1-2, 1-3, 1-4, 1-5, 2-1, 2-2, 2-3, 2-4, 2-5 This test dyed cloth was obtained in the same manner as described above except that the ink compositions of Comparative Examples 1 to 4 were used instead of the ink compositions of Reference Examples 1 and 2. These are referred to as “comparative dyed cloth 1-1, 1-2, 1-3, 1-4, 1-5, 2-1, 2-2, 2-3, 2-4, 2-5, 3-1. 3-2, 3-3, 3-4, 3-5, 4-1, 4-2, 4-3, 4-4, 4-5 ".
- Example 1 a gray ink composition was prepared by blending the dyes used in Reference Examples 1 and 2.
- An ink jet printer PX-101 (Seiko Epson) was prepared by using the ink of Example 1 on a cotton cloth pretreated by a padding method using an aqueous solution containing sodium alginate, urea, sodium bicarbonate and sodium metanitrobenzenesulfonate. A solid pattern was printed on the product. This printed matter was subjected to intermediate drying at 60 to 80 ° C., and then subjected to a steaming treatment at 100 to 103 ° C. for 8, 15, and 20 minutes. After washing with water, it was washed with boiling water at 95 to 100 ° C. for 10 minutes, washed with water and dried to obtain a test dyed fabric.
- test dyed cloth is referred to as “dyed cloth 1-1, 1-2, 1-3”.
- Test dyed fabrics were obtained in the same manner as above except that the ink compositions of Comparative Examples 5 to 6 were used instead of the ink composition of Example 1. These are referred to as “Comparative dyeing cloth 5-1, 5-2, 5-3, 6-1, 6-2, 6-3”.
- the dyed fabric dyed with the single dye ink composition was found to contain the yellow dye of Synthesis Example 1 and C.I. I.
- the dyed fabric prepared by Reactive Black 8 had less change in the dyeing concentration with respect to the steaming time as compared with each comparative example.
- the density change rate of the reference dyeing fabric prepared in Reference Example 1 is in the range of 99 to 100%
- the concentration change of the reference dyeing fabric prepared in Reference Example 2 is The rate was in the range of 100 to 101%, and it was found that the dyeing concentration was not dependent on the steaming time at 8 minutes or longer.
- the dyeing fabric of comparative example 1 was 91 to 100%
- the dyeing fabric of comparative example 2 was 96 to 100%
- the comparative example 3 was within the same steaming time range.
- the dyed fabric was 88 to 100%
- the dyed fabric of Comparative Example 4 was 100 to 102%. It was found that the dyeing concentration varied with the steaming time as compared with the reference example.
- the dyed fabrics prepared in Example 1 and Comparative Examples 5 to 6 have both a * and b * values close to 0, indicating a gray hue.
- the dyed fabric prepared with the gray ink of Example 1 of the present invention has a * and b * constant regardless of the change in the steaming time, whereas the comparative dyed fabric prepared in Comparative Examples 5 to 6 It was found that the values of a * and b * vary depending on the steaming time, and the tone as gray is blurred.
- the dyed fabric prepared in Comparative Example 6 has a large blurring of a * , and the tone of gray gradually changes from reddish to bluish and yellowish.
- Example 1 was a high-quality dyed fabric with higher color reproducibility with respect to the steaming time in the gray hue range than Comparative Examples 5-6.
- the gray ink composition for inkjet textile printing according to the present invention can provide a dyed fabric having high color reproducibility in a gray hue.
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Abstract
Description
インクジェット捺染用の染料インクとしては、シルク、ナイロン等のポリアミド系繊維用の酸性染料インク;ポリエステル系繊維用の分散染料インク;綿、レーヨン等のセルロース系繊維用の反応性染料(反応染料)インク;等が販売されている。
1)
色素中に、下記式(1)で表される化合物又はその塩を含有するインクジェット捺染用グレーインク組成物、
色素中に、更にC.I.Reactive Black 8を含有する上記1)に記載のインクジェット捺染用グレーインク組成物、
3)
更に、水溶性有機溶剤を含有する上記1)又は2)に記載のインクジェット捺染用グレーインク組成物、
4)
更に、pH調整剤としてトリス(ヒドロキシメチル)アミノメタンを含有する上記1)乃至3)のいずれか一項に記載のインクジェット捺染用グレーインク組成物、
5)
25℃における粘度が3~20mPa・sである上記1)及至4)のいずれか一項に記載のインクジェット捺染用グレーインク組成物、
6)
上記1)乃至5)のいずれか一項に記載のインクジェット捺染用グレーインク組成物、シアンインク組成物、マゼンタインク組成物、イエローインク組成物、及びブラックインク組成物を有するインクジェット捺染用インクセット、
7)
上記1)乃至5)のいずれか一項に記載のインクジェット捺染用グレーインク組成物をインクとして用い、インクジェットプリンタによりセルロース系繊維に該インクを付与する工程Aと、
上記工程Aにより付与したインク中の色素を熱により上記セルロース系繊維に反応固着させる工程Bと、
上記セルロース系繊維中に残存する未固着の色素を洗浄する工程Cと、を含むセルロース系繊維の捺染方法、
8)
1種以上の糊材、アルカリ性物質、還元防止剤、及びヒドロトロピー剤を少なくとも含む水溶液を、インクを付与する前の上記セルロース系繊維に付与する、繊維の前処理工程Dを更に含む上記7)に記載のセルロース系繊維の捺染方法、
に関する。
本発明は、上記の通り、式(1)で表される化合物又は該化合物の塩を含むものであるが、両者を常に「化合物又はその塩」等と併記するのは煩雑である。このため、特に断りがない限り、便宜上、「化合物又はその塩」の両者を含めて単に「化合物」と簡略して、以下記載する。また、「グレーインク組成物」についても同様に、単に「インク組成物」と以下記載する。
上記式(2)におけるZ1、Z2、Z3、Z4のアルキル基の具体例としては、メチル、エチル、n-プロピル、イソプロピル、n-ブチル、イソブチル、sec-ブチル、tert-ブチル等が挙げられ、ヒドロキシアルキル基の具体例としては、ヒドロキシメチル、ヒドロキシエチル、3-ヒドロキシプロピル、2-ヒドロキシプロピル、4-ヒドロキシブチル、3-ヒドロキシブチル、2-ヒドロキシブチル等のヒドロキシC1-C4アルキル基が挙げられ、ヒドロキシアルコキシアルキル基の例としては、ヒドロキシエトキシメチル、2-ヒドロキシエトキシエチル、3-ヒドロキシエトキシプロピル、2-ヒドロキシエトキシプロピル、4-ヒドロキシエトキシブチル、3-ヒドロキシエトキシブチル、2-ヒドロキシエトキシブチル等のヒドロキシC1-C4アルコキシC1-C4アルキル基が挙げられる。これらのうち、ヒドロキシエトキシC1-C4アルキルが好ましい。特に好ましいものとしては、水素原子;メチル;ヒドロキシメチル、ヒドロキシエチル、3-ヒドロキシプロピル、2-ヒドロキシプロピル、4-ヒドロキシブチル、3-ヒドロキシブチル、2-ヒドロキシブチル等のヒドロキシC1-C4アルキル基;ヒドロキシエトキシメチル、2-ヒドロキシエトキシエチル、3-ヒドロキシエトキシプロピル、2-ヒドロキシエトキシプロピル、4-ヒドロキシエトキシブチル、3-ヒドロキシエトキシブチル、2-ヒドロキシエトキシブチル等のヒドロキシエトキシC1-C4アルキル基;等が挙げられる。
無機塩の例としては、塩化リチウム、塩化ナトリウム、塩化カリウム等のアルカリ金属塩、塩化アンモニウム、臭化アンモニウム等のアンモニウム塩が挙げられる。有機の陽イオンの塩の例としては、有機アミンのハロゲン塩等が挙げられる。無機の塩基の例としては、例えば水酸化リチウム、水酸化ナトリウム、水酸化カリウム等のアルカリ金属の水酸化物、水酸化アンモニウム、あるいは炭酸リチウム、炭酸ナトリウム、炭酸カリウム等のアルカリ金属の炭酸塩等が挙げられる。有機の塩基の例としては、有機アミン、例えばジエタノールアミン、トリエタノールアミン等の上記式(2)で表される4級アンモニウム類の塩等が挙げられるが、これらに限定されるものではない。
有機ハロゲン系化合物としては、例えば、ペンタクロロフェノールナトリウムが挙げられる。
ピリジンオキシド系化合物としては、例えば、2-ピリジンチオール-1-オキサイドナトリウムが挙げられる。
イソチアゾリン系化合物としては、例えば、1,2-ベンズイソチアゾリン-3-オン、2-n-オクチル-4-イソチアゾリン-3-オン、5-クロロ-2-メチル-4-イソチアゾリン-3-オン、5-クロロ-2-メチル-4-イソチアゾリン-3-オンマグネシウムクロライド、5-クロロ-2-メチル-4-イソチアゾリン-3-オンカルシウムクロライド、2-メチル-4-イソチアゾリン-3-オンカルシウムクロライド等が挙げられる。
その他の防腐防黴剤としては、酢酸ナトリウム、デヒドロ酢酸ナトリウム、ソルビン酸ナトリウム、安息香酸ナトリウム等;更にはアーチケミカル社製の商品名プロクセルRTMGXL(S)、プロクセルRTMXL-2(S);等が、それぞれ挙げられる。なお、本明細書中において、上付きの「RTM」は登録商標を意味する。
また、ライトイエローインク、ライトマゼンタインク、ライトシアンインクのインク組成物に含有される色素は上記の3色のインクセット、すなわちイエロー、マゼンタ、シアンの各インク組成物と同じものがよい。
インクジェットプリンタには、例えば機械的振動を利用したピエゾ方式;加熱により生ずる泡を利用したバブルジェット(登録商標)方式;等を利用したものがある。本発明のインクジェット捺染方法では、いかなる方式であっても使用が可能である。
前処理剤のセルロース系繊維への付与は、例えばパディング法が挙げられる。パディングの絞り率は40~90%程度が好ましく、より好ましくは60~80%程度である。
本発明のインク組成物をインクジェットインクとして使用しても、ノズル付近におけるインク組成物の乾燥による固体析出は非常に起こりにくく、噴射器(記録ヘッド)を閉塞することもない。また、本発明のインク組成物は連続式インクジェットプリンタを用い、比較的長い時間間隔においてインクを再循環させて使用する場合においても、又はオンデマンド式インクジェットプリンタによる断続的な使用においても、物理的性質の変化を起こさない。
更に、本発明のインク組成物により捺染された布帛は、特に耐水性、耐光性が良好であり、この理由から、染布の長期保存安定性にも優れている。また、従来のインクと比較して発色の再現性が良く、特にグレーの色相範囲での色再現性が非常に優れている。
このように、本発明のインク組成物は、各種の記録インク用途、特にセルロース系繊維のインクジェット捺染に極めて有用である。
2-ナフチルアミン-3,6,8-トリスルホン酸38.3部を水300部中に中性で溶解し、氷を加えて15~20℃とし、亜硝酸ナトリウム7.0部及び塩酸23部によりジアゾ化した。これにより得られたジアゾニウム塩の溶液に(3-アミノフェニル)尿素15.1部を加え、10%炭酸ナトリウム水溶液を添加してpH5.0~6.0に保ちながら15~20℃でカップリングさせた。カップリング終了後、氷を加えて0~5℃とし、分散剤0.2部を加え、次いで塩化シアヌル18.5部を加え、10%炭酸ナトリウム水溶液の添加によりpH6.0~7.0を保ちながら0~5℃で縮合させた。反応終了を確認した後、タウリン12.5部を加え、10%炭酸ナトリウム水溶液の添加によりpH6.0~7.0に保ちながら55~60℃で反応を終了させた。反応終了を確認した後、塩化ナトリウムを加えて塩析、濾過し、80℃以下で乾燥することにより、上記式(1)で表されるゴールデンイエロー染料の赤味黄色粉末を得た。この赤味黄色粉末を10質量倍の水中で逆浸透法により精製を行い、80℃以下で乾燥して、無機塩の極めて少ない上記式(1)で表されるゴールデンイエロー染料の赤味黄色結晶(λmax=420nm:水中)を得た。
下記表2に示した組成比で染料を混合し、固形分が溶解するまでおおよそ1時間撹拌することによりインク組成物を得た後、0.45μmのメンブランフィルター(商品名、セルロースアセテート系濾紙、アドバンテック社製)で濾過することにより試験用のインク組成物を調製した。
上記式(1)で表される化合物(イエロー系):X=10部
[参考例2]
C.I.Reactive Black 8(ブラック系):X=10部
参考例1で用いたイエロー系の染料の代わりにC.I.Reactive Yellow 95、C.I.Reactive Orange 12を、レッド系の染料としてC.I.Reactive Red 31を、ブルー系の染料としてC.I.Reactive Blue 15:1をそれぞれ使用する以外は参考例1と同様にして、比較例1~4のインク組成物を調製した。
C.I.Reactive Yellow 95(イエロー系):X=10部
[比較例2]
C.I.Reactive Orange 12(イエロー系):X=10部
[比較例3]
C.I.Reactive Red 31(レッド系):X=10部
[比較例4]
C.I.Reactive Blue 15:1(ブルー系):X=10部
アルギン酸ナトリウム、尿素、炭酸水素ナトリウム、メタニトロベンゼンスルホン酸ナトリウムを含む水溶液を用いてパディング法にて前処理を行った木綿布に、参考例1、2のインクを使用してインクジェットプリンタPX-101(セイコーエプソン社製)にてベタ柄を捺染した。この捺染物を60~80℃で中間乾燥後、100~103℃で2、5、8、15、20分間スチーミング処理を行った。水洗後、95~100℃の沸騰水で10分間洗浄し、水洗、乾燥することにより試験染布を得た。この試験染布を「参考染布1-1、1-2、1-3、1-4、1-5、2-1、2-2、2-3、2-4、2-5」とする。
参考例1、2のインク組成物の代わりに、比較例1~4のインク組成物を用いる以外はそれぞれ上記と同様にして各試験染布をそれぞれ得た。これらをそれぞれ「比較染布1-1、1-2、1-3、1-4、1-5、2-1、2-2、2-3、2-4、2-5、3-1、3-2、3-3、3-4、3-5、4-1、4-2、4-3、4-4、4-5」とする。
上記のようにして得た各試験染布の色相について評価を行った。色相は、GRETAG-MACBETH社製の測色機、商品名SpectroEyeを用いて、染布を測色することによりa*、b*及び各色の反射濃度D値を測定した。また、スチーミング時間への依存性を分かり易く表現する目的として、それぞれのD値についてスチーミング時間が8分のD値を100%としてその割合を%表記した。結果を下記表3に示す。
[実施例1]
上記式(1)で表される化合物(イエロー系):X=0.1部
C.I.Reactive Black 8(ブラック系):X=3部
(合計 3.1部)
比較例5~6として、参考例2及び比較例1~4で使用した染料を配合することによりグレーインク組成物を調製した。なお、グレーインク組成物の比較例としては、上記式(1)で表される化合物と同種のイエロー系染料を配合したインク組成物(比較例5)と、イエロー系、レッド系、ブルー系の3種配合のグレーインク組成物(比較例6)とを調製した。
[比較例5]
C.I.Reactive Orange 12(イエロー系):X=0.1部
C.I.Reactive Black 8(ブラック系):X=3部
(合計 3.1部)
[比較例6]
C.I.Reactive Yellow 95(イエロー系):X=1.5部
C.I.Reactive Red 31(レッド系):X=1.5部
C.I.Reactive Blue 15:1(ブルー系):X=1.5部
(合計 4.5部)
アルギン酸ナトリウム、尿素、炭酸水素ナトリウム、メタニトロベンゼンスルホン酸ナトリウムを含む水溶液を用いてパディング法にて前処理を行った木綿布に、実施例1のインクを使用してインクジェットプリンタPX-101(セイコーエプソン社製)にてベタ柄を捺染した。この捺染物を60~80℃で中間乾燥後、100~103℃で8、15、20分間スチーミング処理を行った。水洗後、95~100℃の沸騰水で10分間洗浄し、水洗、乾燥することにより試験染布を得た。この試験染布を「染布1-1、1-2、1-3」とする。
実施例1のインク組成物の代わりに、比較例5~6のインク組成物を用いる以外はそれぞれ上記と同様にして各試験染布をそれぞれ得た。これらを「比較染布5-1、5-2、5-3、6-1、6-2、6-3」とする。
上記のようにして得た各試験染布の色相について評価を行った。色相は、GRETAG-MACBETH社製の測色機、商品名SpectroEyeを用いて、染布を測色することによりa*、b*及びブラックの反射濃度DB値を測定した。また、スチーミング時間への依存性を分かり易く表現する目的として、それぞれのDB値についてスチーミング時間が8分のDB値を100%としてその割合を%表記した。結果を下記表4に示す。
表3の結果から、単一染料インク組成物で染色を行った染布では、合成例1のイエロー系染料及びC.I.Reactive Black 8により調製した染布は、各比較例に比べてスチーミング時間に対する染着濃度の変化が少なかった。特に好ましいスチーミング時間である8~20分の間では、参考例1で作成した参考染布の濃度変化率は99~100%の範囲にあり、参考例2で作成した参考染布の濃度変化率は100~101%の範囲にあり、8分以上では染着濃度がスチーミング時間に依存しないことがわかった。
これに対し、各比較例で作成した比較染布では同じスチーミング時間の範囲で、比較例1の染布は91~100%、比較例2の染布は96~100%、比較例3の染布で88~100%、比較例4の染布で100~102%であり、参考例と比べ染着濃度がスチーミング時間によって変化することが分かった。
表4の結果から、配合グレーインク組成物で染色を行った染布では、合成例1のイエロー系染料とC.I.Reactive Black 8との配合である実施例1により調製した染布と各比較例により調製した染布とは、ともにスチーミング時間に対する染着濃度の変化が少なかった。特に好ましいスチーミング時間である8~20分の間では、実施例1及び比較例5~6で作成した染布の濃度変化率は99~100%の範囲にあり、8分以上では染着濃度がスチーミング時間に依存しないことが分かった。
しかし、各染布のa*、b*の値より、色相については実施例1及び比較例5~6で作成した染布はともにa*、b*の値が0に近く、グレーの色相にあるが、本発明の実施例1のグレーインクで作成した染布のみがスチーミング時間の変化によらずa*、b*が一定なのに対して、比較例5~6で作成した比較染布はa*、b*の値がスチーミング時間によって変化しており、グレーとしての色調がぶれることが分かった。特に比較例6で作成した染布はa*のぶれが大きく、グレーの色調は赤味から青味、黄味と徐々に変化しており、3色の染料でグレーを配合する方が、2色で配合するよりも各色のスチーミング依存性に影響され易く、グレーとしての色が変化してしまうことが分かった。
以上の結果から、実施例1の染布は比較例5~6に比べて、グレーの色相範囲でスチーミング時間に対する発色の再現性が高く、高画質の染布であった。
Claims (8)
- 色素中に、更にC.I.Reactive Black 8を含有する請求項1に記載のインクジェット捺染用グレーインク組成物。
- 更に、水溶性有機溶剤を含有する請求項1又は2に記載のインクジェット捺染用グレーインク組成物。
- 更に、pH調整剤としてトリス(ヒドロキシメチル)アミノメタンを含有する請求項1乃至3のいずれか一項に記載のインクジェット捺染用グレーインク組成物。
- 25℃における粘度が3~20mPa・sである請求項1乃至4のいずれか一項に記載のインクジェット捺染用グレーインク組成物。
- 請求項1乃至5のいずれか一項に記載のインクジェット捺染用グレーインク組成物、シアンインク組成物、マゼンタインク組成物、イエローインク組成物、及びブラックインク組成物を有するインクジェット捺染用インクセット。
- 請求項1乃至5のいずれか一項に記載のインクジェット捺染用グレーインク組成物をインクとして用い、インクジェットプリンタによりセルロース系繊維に該インクを付与する工程Aと、
前記工程Aにより付与したインク中の色素を熱により前記セルロース系繊維に反応固着させる工程Bと、
前記セルロース系繊維中に残存する未固着の色素を洗浄する工程Cと、を含むセルロース系繊維の捺染方法。 - 1種以上の糊材、アルカリ性物質、還元防止剤、及びヒドロトロピー剤を少なくとも含む水溶液を、インクを付与する前の前記セルロース系繊維に付与する、繊維の前処理工程Dを更に含む請求項7に記載のセルロース系繊維の捺染方法。
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CN103993490B (zh) * | 2014-04-11 | 2016-03-02 | 常州大学 | 一种涤纶碱性染色一体助剂及其应用 |
JP6897327B2 (ja) * | 2017-05-30 | 2021-06-30 | セイコーエプソン株式会社 | インク組成物、インクセット及び記録方法 |
EP3342927B1 (en) * | 2016-12-28 | 2019-08-14 | Seiko Epson Corporation | Ink jet ink composition for textile printing, ink set, and recording method |
CN114058194A (zh) * | 2021-11-22 | 2022-02-18 | 浙江劲光实业股份有限公司 | 一种紫色活性染料的制备工艺 |
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