Classifications

• • 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
  • C09B67/0079—Azoic dyestuff preparations
• • 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
• • 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
  • C09B67/0041—Blends of pigments; Mixtured crystals; Solid solutions mixtures containing one azo dye
• • 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
  • C09D11/40—Ink-sets specially adapted for multi-colour inkjet printing

Definitions

• the invention relates to the field of colorants, particularly for use in recording liquids for writing and recording devices, e.g. for ink jet printing processes (ink jet process).
• the ink jet or ink jet process is a contactless printing process in which droplets of the recording liquid are directed from one or more nozzles onto the substrate to be printed.
• the recording liquids or the dyes contained therein must be high
• a high light fastness is of particular importance for ink-jet applications outdoors and in the production of ink-jet prints with photographic quality.
• the dyes used in the inks must correspond as closely as possible to the three primary colors yellow, magenta and cyan.
• the selection of suitable dyes is not only limited by the required shade, but also by the required purity of the color and the desired brilliance of the color rendering. So far, however, it has not been possible to develop an ink composition which has all the desired properties in an ideal manner and can be successfully used in practice. The situation is explained in more detail using the example of inks of the shade magenta.
• inks based on water-soluble magenta dyes for example, direct dyes such as Cl Direct Red 1, 11, 37, 62, 75, 81, 87, 89, 95 and 227 are used.
• Inks made from direct dyes have excellent water resistance due to the substantivity of the direct dyes, but have two disadvantages: The low solubility in water means that the nozzles are easily clogged by failed dye during continuous printing or when used intermittently. In addition, aggregation formation is increasingly observed, which causes cloudy nuances and thus leads to unsatisfactory color rendering.
• highly lightfast pigments can also be used as colorants in inkjet inks such as C.I. Pigment Red 122, C.I. Pigment Red 176, C.I. Pigment Red 184, 185 or C.I. Pigment Red 269 can be used. It turned out to be disadvantageous that little brilliant prints were obtained.
• the present invention relates to dye mixtures consisting essentially of a dye of the formula (1) and a dye of the formula (2) or (3)
• M preferably represents hydrogen, sodium, lithium or potassium.
• Y is preferably hydrogen, methyl, ethyl, methoxy or ethoxy.
• R 2 preferably represents hydrogen, SO 3 M, methyl, ethyl, acetyl, phenyl, chlorophenyl, phenylsulfonic acid, morpholinyl or pyridinyl.
• R 3 and R 4 are preferably hydrogen, methyl, ethyl, hydroxymethyl, hydroxypropyl, acetyl, phenyl, chlorophenyl, phenylsulfonic acid, CH 2 CH 2 SO 3 M, CH 2 COOM, CH 2 CH 2 COOM or CH 3 CHCOOM.
• R 5 preferably represents methyl, ethyl, propyl, butyl, phenyl, CH 2 CH 2 CH 2 SO 3 M or CH 2 CH 2 COOM.
• R 6 , R 7 , R 8 are preferably hydrogen, methyl, ethyl, CH 2 CH 2 OM, CH2CH2NH2 or COOM.
• R 9 preferably represents hydrogen, methyl, ethyl, acetyl, benzoyl, phenyl, or phenyl or benzoyl substituted with halogen, COOM or SO 3 M.
• Preferred mixing ratios between the compounds of the formulas (1) and (2), and (1) and (3), based on dry weights are between 100: 1 and 1: 100, preferably between 50: 1 and 1:50, in particular between 10: 1 and 1:10.
• the compound of formula (3) is known under the name Cl Acid Red 52.
• Preferred mixing ratios are 1:10 to 10: 1, in particular 1: 5 to 5: 1 , each based on dry mixes. It can also be advantageous to use a mixture of the dyes of the formulas (1), (2) and (3), either (2) or (3) being used as the shading dye in the proportions given below.
• the dye mixtures according to the invention can additionally contain a shading colorant, preferably from the group C.I. Direct Red 1, 11, 37, 62, 75, 81, 87, 89, 95,
• the shading colorant is preferably in an amount of 0.001 to 5% by weight, in particular 0.01 to 1% by weight, based on the dry weight of the
• the dye mixtures according to the invention can be prepared by the dyes of the formulas (1) and (2), or (1) and (3) and, if appropriate, the shading colorant in the stated mixing ratios in the form of the dry powder, their solutions, water or solvent-moist press cake or master batches.
• Dyes of formula (1) can be prepared by using the aniline derivative of formula (4)
• R is an alkyl radical, preferably methyl, ethyl or propyl, diazotized and the resulting diazonium salt with a compound of
• R 60 is OR 2 , NR 3 R 4 or SR 5 , then diazotize and couple to the building block (5) and the monoazo compound (9)
• the diazotization and coupling steps mentioned can be carried out by customary methods.
• the diazotization is preferably carried out in aqueous solution or suspension with sodium nitrite at temperatures from 0 to 10 ° C. and a pH between 1 and 3.
• the azo coupling is preferably carried out in aqueous solution or suspension at temperatures from 0 to 20 ° C. and a pH between 4 and 10.
• the molar ratios between the respective diazonium salt and the respective coupling component are preferably 1: (0.8 to 2).
• the complexation with the metal M 1 expediently takes place by adding an aqueous metal salt solution, for example a metal sulfate, chloride, bromide, hydrogen sulfate, bicarbonate or carbonate.
• the dyes can also be obtained by continuously mixing equivalent amounts of the starting products in the form of aqueous-acidic or aqueous-alkaline solutions in e.g. Mixing nozzles and flow reactors, possibly with a post-reaction phase in a reaction vessel, are shown.
• the present invention also relates to the use of the mixtures mentioned for dyeing and printing natural and synthetic fiber materials (for example polyester, silk, wool, blended fabrics), in particular for recording writing and images on various recording media, and for dyeing paper or cellulose in the crowd.
• natural and synthetic fiber materials for example polyester, silk, wool, blended fabrics
• the dyes described are prepared in accordance with the requirements mentioned.
• the dyes can be isolated from the initially obtained, preferably aqueous, reaction mixtures by salting out and filtering or by spray drying, if appropriate after partial or complete desalination by means of membrane filtration.
• isolation can also be dispensed with and the reaction mixtures containing dyes can be converted directly into concentrated dye solutions by adding organic and / or inorganic bases, possibly humectants, preservatives and, if appropriate, after partial or complete desalination by means of membrane filtration.
• the dyes can also be used as a press cake (optionally also in a flush process) or as a powder.
• the dye mixtures according to the invention are in the most salt-free form possible, i.e. free of NaCI or other common inorganic salts that are formed during the synthesis of the dyes.
• Inorganic bases suitable for concentrated dye solutions are, for example, lithium hydroxide, lithium carbonate, sodium hydroxide, Sodium bicarbonate, sodium carbonate, potassium hydroxide, potassium carbonate and ammonia.
• Suitable organic bases are, for example, monoethanolamine, diethanolamine, tethanolamine, 2-aminopropanol, 3-aminopropanol, dipropanolamine, tripropanolamine, N-methylaminoethanol, N, N-dimethylaminoethanol, N-phenylaminopropanol, ethylenediamine, tetramethylethylenediamine, tetramethylpropamethylenediamine diamine, diethylenediamine diamine, Ethylene tetramine, ethylamine, diisopropylethylamine and polyethyleneimine.
• Moisturizers suitable for concentrated dye solutions are, for example, formamide, urea, tetramethylurea, ⁇ -caprolactam, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, butyl glycol, methyl cellosolve, glycerol, N-methylpyrrolidone, 1,3-diethyl-2-sodium-nidonolidone, 1-sodium-2-imidazolide - Cumene sulfonate and sodium butyl monoglycol sulfate.
• the dye mixtures according to the invention are particularly suitable for the production of recording liquids, in particular of aqueous and non-aqueous inks for the ink-jet printing process, and for those inks which work according to the hot-melt process or are based on microemulsions, but also for other printing -, duplication, marking, writing, drawing, stamping or registration procedures.
• the present invention also relates to recording liquids which contain a dye mixture according to the invention and optionally other colorants for shading.
• shading colorants are advantageously contained in an amount of 0 to 20% by weight, preferably 0.01 to 10% by weight, in particular 0.1 to 5% by weight, based on the total weight of the recording liquid.
• composition of the recording liquid must be adapted to the respective purpose.
• Recording liquids according to the invention generally contain a total of 0.1 to 50% by weight of the said mixture of dyes (1) and (2), or (1) and (3), and optionally the shading colorants, calculated as dry weight, 0 to 99% by weight of water and 0.5 to 99.5% by weight of organic solvent and / or humectant.
• the recording liquids contain 0.5 to 15% by weight of said dye mixture, calculated as dry weight, 35 to 75% by weight of water and 10 to 50% by weight of organic solvent and / or humectant; in another preferred embodiment 0.5 to 15% by weight of said dye mixture, calculated as dry weight, 0 to 20% by weight of water and 70 to 99.5% by weight of organic solvent and / or humectant.
• Water used to prepare the recording liquids is preferably used in the form of distilled or deionized water.
• the solvents and / or humectants contained in the recording liquids can be an organic solvent or a mixture of such solvents, with water-miscible solvents being preferred.
• Suitable solvents are, for example, monohydric or polyhydric alcohols, their ethers and esters, e.g. Methanol, ethanol, propanol, isopropanol, butanol, isobutanol; di- or trihydric alcohols, in particular with 2 to 6 carbon atoms, e.g.
• Ethylene glycol propylene glycol, 1, 3-propanediol, 1, 4-butanediol, 1, 5-pentanediol, 1, 6-hexanediol, 1, 2,6-hexanetriol, glycol, diethylene glycol, dipropylene glycol, ethylene glycol, polyethylene glycol, tripropylene glycol,
• the recording liquids according to the invention may also contain conventional additives, for example preservatives, cationic, anionic or nonionic surface-active substances (surfactants and wetting agents), and agents for regulating the viscosity, for example polyvinyl alcohol, cellulose derivatives, or water-soluble natural or artificial resins Film formers or binders to increase the adhesive and abrasion resistance. Light stabilizers can also be present.
• amines such as. As ethanolamine, diethanolamine, triethanolamine, N, N-dimethylethanolamine, diisopropylamine, to increase the pH of the recording liquid may be included, normally 0 to 10 wt .-%, preferably 0.5 to 5 wt .-%, based on the total weight of the recording liquid.
• the recording liquids for the ink-jet printing process can, depending on the embodiment of this printing process, e.g. as a continuous jet, intermittent jet, pulse jet or compound jet process, further additives, e.g. to buffer the pH value, to adjust the electrical conductivity, the specific heat, the thermal expansion coefficient and the conductivity.
• the recording liquids according to the invention are stored, there is no deposition of precipitates, which leads to fuzzy printed images or to nozzle clogging.
• the recording liquids according to the invention are in the ranges suitable for ink-jet processes. They deliver printed images of high optical density with excellent light and water fastness.
• magenta dye mixture according to the invention can be used as an ink set in combination with black, yellow and / or cyan colorants.
• the yellow and cyan tones are both dyes, such as the Cl dyes Acid Yellow 17, Cl Acid Yellow 23, Cl Direct Yellow 86, Cl Direct Yellow 98, Cl Direct Yellow 132, Cl Reactive Yellow 37, Cl Acid Blue 9, Cl Direct Blue 199, and also pigments, such as Cl Pigment Yellow 17, Cl Pigment Yellow 74, Cl Pigment Yellow 83, Cl Pigment Yellow 97, Cl Pigment Yellow 120, Cl Pigment Yellow 139, Cl Pigment Yellow 151, Cl Pigment Yellow 155, Cl Pigment Yellow 180, Cl Pigment Violet 19, Cl Pigment Blue 15, Cl Pigment Blue 15: 3, CI Pigment Blue 15: 4.
• the black tones are preferably Cl Food Black 1 and 2, Cl Direct Black 168, Cl Direct Black 195, Cl Reactive Black 8, Cl Reactive Black 31, Cl Sol.Sulfur Black 1, Carbon Black.
• dyes reacted with nucleophiles can also be used in ink sets.
• the dye mixtures according to the invention are suitable as colorants in electrophotographic toners and developers, such as e.g. One-component and two-component powder toners, magnetic toners, liquid toners, polymerization toners and other special toners are suitable.
• Typical toner binders are polymerization, polyaddition and
• Polycondensation resins such as styrene-styrene-acrylate, styrene-butadiene, acrylate, polyester, phenol-epoxy resins, polysulfones, polyurethanes, individually or in
• Combination as well as polyethylene and polypropylene, which may contain other ingredients, such as charge control agents, waxes or flow agents, or in
• dye mixtures according to the invention are suitable as colorants in powders and powder coatings, in particular in triboelectrically or electrostatically sprayed powder coatings which are used for the surface coating of objects made of, for example, metal, wood, plastic, glass, ceramic, concrete, textile material,
• Paper or rubber are used.
• Epoxy resins typically used are carboxyl- and hydroxyl-containing polyester resins, polyurethane and acrylic resins together with conventional hardeners as powder coating resins. Combinations of resins are also used.
• epoxy resins are often used in combination with carboxyl- and hydroxyl-containing polyester resins.
• the dye mixtures according to the invention are colorants for color filters, both for additive and for subtractive color generation (P. Gregory "Topics in Applied Chemistry: High Technology Applications of Organic Colorants “Plenum Press, New York 1991, pages 15-25), and as colorants in electronic inks for so-called” electronic newspapers ".
• the dye mixtures according to the invention can additionally be nuanced with other dyes and / or pigments, such as with Cl Direct Red 1, 11, 37, 62, 75, 81, 87, 89, 95 and 227; Cl Acid Red 1, 8, 87, 94, 115, 131, 144, 152, 154, 186, 245 and 289; Cl Pigment Red 57: 1, 122, 146, 176, 184, 185 and 269.
• the light fastness is determined according to DIN 54003 (blue wool scale). 1 means very low, 2 low, 3 moderate, 4 fairly good, 5 good, 6 very good.
• the reaction mixture was added dropwise, the pH was maintained with soda and the mixture was stirred until the reaction was carried out quantitatively.
• the coupling component can also be added dropwise to the diazo solution, or the two reactants can be continuously mixed together in the required molar ratios.
• the dye solution obtained in b) is adjusted to pH 3-5 with 10N hydrochloric acid, 12.98 g (0.052 mol) of copper sulfate x 5H 2 O and 11.3 g of sodium acetate are added and the mixture is stirred at 95 ° C. for 48 hours. After cooling to room temperature, Na thiosulfate x 5H 2 O is added and the mixture is stirred at 90 ° C. for 4 h. Finally, the dye solution is filtered.
• the metalation can also be carried out in a pressure reactor or by the process described in Example 2d).
• 16.67 g (0.05 mol) of the amine component (4) are dissolved in 50 ml of deionized water and mixed with 5.78 g (0.055 mol) of diethanolamine at pH 8.5-10. The temperature is raised to 60 ° C for 1 h.
• the dye solution is preserved with 4 g ® Proxel GXL.
• the dye solution is set to 3.5-4.5.
• the dye solution is with 0.2 vol% Proxel

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Wood Science & Technology (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Inks, Pencil-Leads, Or Crayons (AREA)
• Ink Jet Recording Methods And Recording Media Thereof (AREA)
• Ink Jet (AREA)

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• 2001
  • 2001-02-14 DE DE10106682A patent/DE10106682A1/de not_active Withdrawn
• 2002
  • 2002-02-12 WO PCT/EP2002/001436 patent/WO2002064679A1/de not_active Ceased
  • 2002-02-12 EP EP02719803A patent/EP1368432B1/de not_active Expired - Lifetime
  • 2002-02-12 CA CA002438323A patent/CA2438323A1/en not_active Abandoned
  • 2002-02-12 KR KR10-2003-7010722A patent/KR20030084930A/ko not_active Withdrawn
  • 2002-02-12 DE DE50201677T patent/DE50201677D1/de not_active Expired - Fee Related
  • 2002-02-12 BR BR0207205-0A patent/BR0207205A/pt not_active IP Right Cessation
  • 2002-02-12 US US10/468,253 patent/US7066993B2/en not_active Expired - Fee Related
  • 2002-02-12 JP JP2002565001A patent/JP2004526825A/ja active Pending
  • 2002-02-12 CN CN028037723A patent/CN1216945C/zh not_active Expired - Fee Related
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