Classifications

• • 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
  • C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
• • 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
  • C09D11/36—Inkjet printing inks based on non-aqueous solvents
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
  • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
  • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
  • B41J2/01—Ink jet
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein

Definitions

• the present invention relates to an oil-based ink thread for ink jets Si.
• the ink jet language includes a control for ejecting ink using a static bow I force, a method for ejecting ink using the ⁇ ⁇ ⁇ pressure of a piezo element (drop-on-demand method or pressure pulse ⁇ ⁇ , Furthermore, ink is ejected by utilizing the pressure generated by the formation and growth of bubbles due to high heat (various ink jets such as bubble or thermal jet ⁇ 3 ⁇ 43 ⁇ 4 are known.
• the inks used in these ink jet terms are water-based inks, water-based inks, and organic solvents as main inks, and oil-based inks. Printed images using water-based inks are generally inferior in water resistance and difficult to print on 7-sided media.
• the oil-based ink has advantages such as being able to form a printed image having excellent meta-K properties and facilitating the printing of a medium having a meta-ice surface or a high-quality medium.
• Oil-based inks using pigments for fe ⁇ are also excellent in light resistance.
• the present invention is suitable for printing on a polyvinyl chloride base material, and has excellent printing quality, printing stability, printing drying property, storage stability of ink, and excellent slippage. Let be both.
• the oil-based ink curable composition for use in the ink jet of the present invention is obtained by adding lactone to 1 part by weight of polyoxyethylene glycol dialkyl ether represented by HI wipe (1) in oil-based ink. It shall contain at least 50% by weight of a mixed solvent containing 0.02 to 4 parts by weight of a system solvent.
• Ri ', R 12 is an alkyl group of ⁇ 1-3, same with or may be different, n represents a 2-4 ⁇ [.)
• the lactone solvent is a ⁇ -lactone solvent.
• ⁇ -lactone solvent is ⁇ -butyrolactone or 7-valerolactone.
• oil-based ink further selected from polyoxyethylene glycol monoalkyl ether represented by the following formula (2), polyoxypropylene glycol monoalkyl ether represented by the following formula (3), and triethyl citrate »Means that 0.01 to 48% of at least one solvent is contained.
• oil-based ink further contains an indah resin.
• the atalinole resin is a homopolymer of methyl methacrylate or a copolymer of methyl methacrylate and butyl methacrylate.
• the molecular weight of the (meth) acrylic resin is 10,000 to 150,000 and that the glass transition (T g) is 40 ° C. or higher.
• the resin is a combination of a (meth) acrylic resin, a vinyl chloride resin, a nyl copolymer resin, and / or a fiber-based resin.
• the oil-based ink for ink jets of the present invention (hereinafter also referred to as oil-based ink) is composed of a coloring material and a solvent, and the solvent is polyoxyethylene glycol represented by Hl (1) above. It contains at least 50% by weight of a mixed solvent containing 0.02 to 4 parts by weight of a lactone-based solvent with respect to 1 part by weight of dialkyl ether, and preferably further contains the above formula (2) At least one selected from the group consisting of polyoxyethylene glycol monoalkyl ether represented by the formula, polyoxypropylene glycol monoalkyl ether represented by the formula (3), and triethyl citrate? The content of the binder is defined as being contained in the solvent by weight, and the binder and the binder are appropriately dissolved or dispersed in a solvent together with the dispersant.
• the solvent is polyoxyethylene glycol represented by Hl (1) above. It contains at least 50% by weight of a mixed solvent containing 0.02 to 4 parts by weight of a lactone-based solvent
• the lactone-based solvent has excellent permeability to polyvinyl chloride, and has improved repelling property and drying property when used as an ink by using the polyoxyethylene glycol dialkyl ether represented by (1) in combination. It's based on finding something good.
• lactone solvents and polyoxyethylene glycol dialkyl ethers represented by ⁇ ) 3 ⁇ 4 (1) have a high boiling point and paper and are excellent in workability.
• the mixed solvent of polyoxyethylene glycol dialkyl ether (hereinafter referred to as polyoxyethylene glycol dialkyl ether) and a lactone (hereinafter referred to as mixed ⁇ ) shown in (1) will be described.
• Polyoxyethylene glycol dialkyl ether is one of (1)
• R 1 and R 12 are those having a chain or partial alkyl group, and having a boiling point of about 150 ° C. or higher at most, preferably 180 ° C. or higher. Although there is no particular upper limit value, there is a function of ⁇ 240 ° C CiSJTC for ink jet SII. The density at 20 ° C. is 0.9 g / cm 3 or more.
• polyoxyethylene glycol dialkyl ethers examples include, for example, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, and tetraethylene glycol dimethyl ether.
• Monoter diethylene glycol ethyl methyl ether, triethylene glycol ethyl methyl ether, tetraethylene glycol ethyl methyl ether, diethylene glycol di-n-propyl ether, diethylene glycol di-iso-propyl ether, etc.
• a lactone solvent is a compound having a cyclic structure formed by an ester bond, and includes ⁇ -lactone having a 5-membered ring structure, (5-lactone having a 5-membered ring structure, and £ -lactone having a 7-membered ring structure.
• Butyrolactone, Nok relolactone, 1-hexalactone, Heptalactone, 7-Octalactone, 7-Nonalactone, 7-Decalactone, Aurdedecalactone, Nokrelolactone, (5-Hexalactone, S-Heptalactone, ⁇ 5 These are lactone, ⁇ 5-nonalactone, ⁇ 5-decalactone, 5-pindecalactone, and ⁇ -force.
• the lactone solvent is a preferred and preferred embodiment of the present invention, and is a 5-membered ring structure ⁇ -lactone.
• a 7-butyrolactone and a ⁇ -lactone lactone are used. is there.
• Each ratio in the mixed solvent is 0.02 to 4 parts, preferably 0.05 to 2 parts by weight of the lactone-based solvent with respect to 1 part by weight of the polyoxyethylene glycol dialkyl ether indicated by Ichibuki (1). It is good to Further, the mixed solvent is preferably contained at least 50% by weight, and more preferably at least 70% by weight in the oil-based ink. As a result, the compatibility with the polyvinyl chloride base material, Excellent in belling properties and print drying properties.
• the oil-based ink for ink jet it is possible to prevent the oil-based ink from being volatilized in ⁇ such as in a nozzle tube or the like, to prevent solidification, and to re-dissolve when solidified.
• R 2 ′ is an alkyl group having 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms, and ⁇ is 3 to 6 ⁇ .
• triethylene glycol monomethyl ether, triethylene glycol monobutyl ether, tetraethylene glycol monomethyl ether, tetraethylene glycol monobutyl ether, pentaethylene glycol monomethyl ether, hexaethylene glycol monomethyl ether alone or a mixture thereof Is exemplified.
• the boiling point under the atmosphere is 200 to 300 ° C (: preferably 240 to 300 ° C.
• a nonionic polyoxyethylene derivative as described below which is liquid at room temperature and under ⁇ ME may be added.
• polyoxyethylene cetyl ethers such as Nissan Nonion P-208 (manufactured by NOF Corporation), which are polyoxydiethylene alkyl ethers, Nissannonion E—202S, E ⁇ 205S ( Nippon Yushi Co., Ltd.), polyoxyethylene oleyl ethers, etc., Emulgen 106, 108 Co., Ltd.), etc., polyoxyxylene lauryl ethers, and polyoxyxylene alkylphenol ethers
• Polyoxyethylene octyl phenol ethers such as Nissan Nonion HS—204, HS—205, HS—206, HS—208 (manufactured by NOF Corporation), and sorbynone monoestenoles Sorbine Monocaprylate such as Nissan Nonion CP-0 08 R (manufactured by
• Tetraglycerol phosphates such as glycerols, Poem J-14581 (manufactured by RIKEN Vitamin Co., Ltd.), Adeletol NP-620, NP-650, NP-660, NP-675, NP-683, Nonylphenol ethoxylates such as NP-686 (manufactured by Asahi Denki Co., Ltd.), fatty acid phosphate esters such as Adeki Coal CS-141 E, TS-230E (manufactured by Asahi Denki tl.
• Sorbitan sesquiolate such as Sorgen 30 (manufactured by Daiichi Kougaku Yakuhin Co., Ltd.), sorbitan monoolate such as Sorgen 40 (manufactured by Daiichi H3 ⁇ 4yaku Co., Ltd.), Sorgen TW-20 (manufactured by Daiichi Kogyo Co., Ltd.) And polyethylene glycol sorbitan monolate such as Sorgen TW-80 (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.). Self-expression
• R 4i , R 42 , R 43 , and R 44 are an alkyl group, preferably an alkyl group having 1 to 6 carbon atoms.
• Acetylene glycol-based surfactant I represented by Specifically, 2,4,7,9-tetramethyl-1-5-decine-1,4,7-diol, 3,6-dimethyl-4, octin-1,3,6-diol, 3,5-dimethyl-1 —Hexin-1 3-ol and the like.
• Examples of commercially available products are Safinol 104, 82, 465, 485, or TG (all available from Air Products and Chemicals.
• Orufin STG Orufin STG
• Orufin El 01 0 Nisshin, Nissan Nonion A—10R, A-13R (manufactured by NOF Corporation), Floren TG—740W, D—90 (manufactured by Kyoeisha Chemical Co., Ltd.), Emulgen A—90, A-60 (Manufactured by II Co., Ltd.), Neugen CX-100 (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.), etc.
• These polyoxetylene derivatives may be added alone or as a mixture.
• Examples of the polypropylene glycol monoalkyl ether represented by (3) include dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monopropyl ether, and dipropylene glycol monoalkyl ether.
• Examples thereof include propylene glycol monobutyl ether, tripropylene monomethyl ether and the like alone or a mixture thereof, and the boiling point at the bottom is 170 to 245 ° C, preferably 180 ° C (to 240 ° C).
• ⁇ (2), (3) and triethyl quenate each contribute to the volatility-suppressing property of the oil-based ink composition, so that the ink S ⁇ is transferred from the ink cartridge to the pudding head. It is possible to prevent evaporation of solids in the tube by suppressing evaporation of the ink in the tube that ifp the object, and to reduce or reduce the solid content in the tube.
• the amount of the solvent is 1 to 48% by weight, preferably 5 to 30% by weight, and each of the above solvents 1) ⁇ (2), (3) and triethyl citrate may be used alone.
• pigments and dyes such as pigments or dyes commonly used in conventional oil-based inks can be used alone or in combination.
• Pigments include Riki Bon Black, Riki Dom Mured, Molybdenum Red, Chrome Yellow, Cadmium Yellow, Titanium Yellow, Odani Chromium, Viridian, Titanium Kovar, Green, Ultramarine Blue, Prussian Blue, Konokuruto Blue, Dike Tobiropiro Piro , Anthraquinone, benzimidazolone, anthrapyrimidine, azo-based pigment, phthalocyanine-based pigment, quinatalidone-based pigment, isoindolinone-based pigment, dioxazine-based pigment, suren-based pigment, perylene-based pigment, perinone-based pigment, thioindigo-based Pigments, quinophthalone-based pigments, metal complex pigments, and the like can be used.
• the dye examples include a dye, a complex dye, a naphthol dye, an anthraquinone dye, an indigo dye, a carbonium dye, a quinonimine dye, a xanthine dye, a cyanine dye, a quinoline dye, a nitro dye, a nitroso dye, a benzoquinone dye, and a naphthoquinone millet.
• Pigments, phthalocyanine dyes or ⁇ ! Phthalocyanine dyes, and oil-soluble dyes are particularly preferred. These pigments or dyes can be used alone, or two or more of them can be used in combination, and pigments are preferable from the viewpoint of weather resistance. Face
• Face The diameter is between 50 and 500 nm, preferably between 50 and 200 nm.
• the content of fet is 0.5 to 25%, preferably 0.5 to 1% by weight, more preferably 1 to 1 in the oil-based ink.
• the dispersant it is preferable to use a dispersant that works effectively when the solubility parameter of the organic solvent is from 8 to 11.
• a dispersant Commercially available products can be used as such a dispersant, and specific examples thereof include Hinoact KF 1- ⁇ , ⁇ -6000, ⁇ -7000, ⁇ -8000, ⁇ - 8350 ⁇ , ⁇ -8000 EL (enemy Polyester-based polymer compounds such as Fine Chemical Co., Ltd.), s01 sperse 20000, 24000, 32000, 32500, 33500, 34000, 35200 (manufactured by ABSIA), disperbyk— 16 63, 164, 166, 180, 190, 191, 192 (Big Cheminet ⁇ 3 ⁇ 4), Floren DOPA-17, 22, 33, G-700 (manufactured by Kyoeisha Chemical Co., Ltd.) ), Ajispar PB821, PB711 (manufactured by Ajinomoto Co., Inc.), LP4010, LP4050, LP4055, POLYMER 400, 401, 402, 403, 450, 451, 453 (EF
• the content of the dispersant in the oil-based ink of the present invention is 5 to 200%, preferably 30 to 120% by weight, based on the content of the coloring material (particularly, pigment) in the ink II. Depending on the color material to be dispersed, it is better to select.
• the oil-based ink for use in the ink jet of the present invention contains a binder resin.
• the binder has a solubility in the solvent system, and is added for the purpose of adjusting the viscosity of the oil-based ink exfoliated matter, and fixing I 'to the polyvinyl chloride base material.
• vinyl toluene monomethylstyrene copolymer resin alone or a mixture thereof.
• the binder resin is preferably a (meth) acrylic resin, that is, an acrylic resin or a methacrylic resin, and in a more preferred embodiment, a homopolymer of methyl methyl acrylate alone or a copolymer of methyl methacrylate and butyl methacrylate. .
• the molecular weight of the (meth) atalinole resin is from 10,000 to 150,000, preferably from 10,000 to 100,000, and has a glass transition; «(T g) is at least 40 ° C, and the upper limit is not particularly limited. However, it is preferably 105 ° C.
• the (meth) acrylic resin is preferably used in combination with a vinyl chloride-vinyl copolymer copolymer resin and a fiber-based material such as Z or cell mouth, butter, and the like. It is also useful for adjusting the viscosity of the ink.
• the content of each column is 5 to 3 times, preferably 0.7 to 1.6 times the amount of the color additive (weight).
• the oil-based ink waste of the present invention may be added with a safe material such as an antioxidant or a UV absorber, a surfactant I 'freshener, or the like.
• a safe material such as an antioxidant or a UV absorber, a surfactant I 'freshener, or the like.
• the antioxidant include BHA (2,3-butyl-4-oxyanitool), BHT (2,6-di-t-butyl- ⁇ -crebour) and the like; T in oil-based ink fiber 0.01 ⁇ 3.0% by weight.
• a benzophenone-based compound or a benzotriazonole-based compound can be used as the ultraviolet absorbent, and it is 0.01 to 5% in the oil-based ink.
• any of anionic, cationic, amphoteric or nonionic surfactants can be used, and 0.5 to 4.0% by weight of the oil-based ink waste matter. is there.
• a mixed solvent or a mixed solvent is mixed with a solvent selected from-"-I wipe (2), (3), and triethyl citrate.
• a pigment and a dispersant are added to the solvent, and mixed and dispersed by a ball mill, bead minole, ultrasonic wave, jet mill, or the like to prepare a face. It is obtained by adding the remainder of the solvent obtained above, the binder resin, and other additives to the powder under stirring.
• the ink jet product obtained has a viscosity of 2 to 1 at 20 ° C. O mPa ⁇ s, preferably adjusted to 3 to 5 mPa ⁇ s.
• the surface tension of the oil-based ink composition of the present invention is preferably 20 to 50 mN / m. If the surface tension is less than 20 mNZm, the ink curl will spread or spread on the surface of the ink jet pudding head, or it will ooze out, making it difficult to eject ink droplets. There is. In addition, if the surface tension exceeds 50 mNZm, it may not be spread on the surface of the medium and good printing may not be performed.
• the oil-based ink of the present invention may be a discharge nozzle treated with an ink-repellent ink.
• the ink jet language of the present invention is a term used for an oil-based ink and the like.
• the medium is a plastic base material, and is particularly suitable for hard or soft polyvinyl chloride.
• Examples of the polyvinyl chloride substrate include a film and a sheet.
• the ink jet language of the present invention i.e. oil 1 raw ink thread W3 ⁇ 4i, enables printing on the untreated surface of polyvinyl chloride 1 year old. It has the excellent effect of not requiring the use of expensive media, but of course it may be surface-treated with an ink receptive resin.
• the viscosity was measured using an Anton Paar machine “AMV n” viscometer.
• the particle size of the pigment particles was measured using "Microtrack UPA150” manufactured by Nikkiso Co., Ltd.
• Triethylene glycol monomethyl ether 11.0 parts by weight
• the carbon black (“MA-8” manufactured by Mitsubishi Chemical Corporation) is used in 3.5 "solvent and a dispersant (polyester polymer compound, fine chemical
• the dispersion was carried out with a nanomill filled with zirconia beads (0.3 mm) to obtain ⁇ ⁇ .
• the average particle size of the pigment particles obtained by this dispersion was 6 Onm.
• Tetraethylene glycol monobutyl ether ' ⁇ 1 An oil for ink jet I raw ink was prepared in the same manner except that the solvent described above was used in place of the solvent M in Example 1. Viscosity 4.2 mPa-s (20 ° C).
• Triethyl citrate '11.0 parts by weight An oil-based ink composition for an ink jet atmosphere was prepared in the same manner except that the above solvent was used instead of the solvent in Example 1. Viscosity 4.2 mPas
• An oil-based ink for use in Inkjet 2 was prepared in the same manner except that the above solvent was used in place of the solvent ⁇ in Example 1. Viscosity 4. ImPa ⁇ s (20 ° C).
• Triethylene glycol monomethyl ether ⁇ 12.0 parts by weight
• An oil-based Ink® product was prepared in the same manner except that the solvent described above was used in place of the dissolved MJ in Example 1. Viscosity 4.4 m P a ⁇ s (20 ° C).
• the solvent of ffl ⁇ above was used in place of the solvent in Example 1.
• an oil-based ink thread for ink jetting 2 ⁇ was prepared in the same manner. Viscosity 3.9 mPa ⁇ s (20 ° C).
• An oil-based ink thread for ink jetting was prepared in the same manner except that Shosei solvent was used instead of the solvent in Example 1. Viscosity 4.4 mPa ⁇ s (20 ° C).
• Triethylene glycol monomethyl ether ⁇ 11.0 parts by weight
• An oily ink for ink jet was prepared in the same manner as above except that the solvent of flJ was used instead of the solvent ⁇ ⁇ in Example 1. .
• Viscosity 4.0 mPa ⁇ s (20 ° C).
• the inks prepared in Specific Examples 1 to 5 and Comparative Examples 1 to 4 were mounted on an inkjet printer (MJ-8000C; Seiko Epson), and the polyvinyl chloride was added.
• the film was printed on a film (Vucal 900: Lintec II).
• Evaluation B Bleeding power / some power ⁇ The design is not impaired.
• Fiber printing was carried out at room temperature to check for missing dots, flight bends and ink splatters.
• Evaluation A 48 hours! Less than 10 occurrences of missing dots, flying bends, or ink splatters during the reciting period.
• Evaluation B Within the test period of 48 hours, the number of missing dots, flight bending, or ink scattering was 10 or more and less than 20.
• Evaluation c In the im period of 24 hours, dot omission, flight bending, or ink scattering occurred more than 20 times.
• Solid printing was performed, and the time until drying at 30 ° C. was measured.
• the ink was dispensed in a glass bottle in an amount of 5 Og, and allowed to stand at 60 ° C for 1 week in a sealed state. The viscosity and physical properties of the particle size distribution of the ink fiber after standing were measured.
• Evaluation A The difference between the measured values of viscosity and particle size distribution was less than 5% before and after standing.
• Evaluation B Difference between measured values of viscosity and particle size distribution before and after standing was less than 10%.
• Evaluation C Difference between measured values of viscosity and particle size distribution before and after standing was 10% or more.
• Tetraethylene glycol monobutyl ether ⁇ ⁇ ⁇ 10.0 parts by weight 3.0 parts by weight of the solvent of self-destructing solvent “ ⁇ to bon black (CI PIGMENT BLA CK 7) and a dispersant (polyester polymer 2.0 parts by weight of a compound, Abyssia Co., Ltd.) was added, and the mixture was stirred with a dissolver at 3,000 rpm for 1 hour, and then filled with zirconia beads (2 mm). Pre-dispersed in a bead mill. The average particle size of the pigment particles obtained was 5 ⁇ m or less.
• the dispersion was carried out with a nanomill filled with zirconia beads (0.3 mm) to obtain a pigment content.
• the average particle size of the pigment particles obtained by this dispersion is 6 Onm Met.
• the solvent had the following composition.
• Example 6 In the same manner as in Example 6, except that the solvent described above was used instead of the solvent in Example 6. An oil-based ink was prepared for use in Et. Viscosity 4.2 mPa ⁇ s (20 ° C).
• Example 6 ⁇ -norrelolactone 20.0 cage part diethylene glycol getyl ether 63.0 spirit part tetraethylene glycol monobutyl ether 10.0 parts by weight
• the solvent used in Example 6 was replaced with an eradication solvent.
• An oil-based ink thread for ink jet was prepared. Viscosity 4.4 mPa ⁇ s (20 ° C).
• the solvent used had the following composition.
• An oil-based ink thread for Inkjet E was prepared in the same manner except that the solvent described above was used instead of the solvent in Example 6. Viscosity 4.2 mPa ⁇ s (20 ° C).
• the solvent was as follows.
• the solvent was used as the solvent.
• the solvent used had the following composition.
• Example 6 In the same manner as in Example 6, except that the solvent described above was used instead of the solvent composition, an oil-based ink extrudate for use in an ink jet was prepared. Viscosity 4. OmPa-s (20 ° C).
• the average particle size of the obtained pigment particles was 5 / m or less.
• this dispersion is carried out using a nanomill filled with zirconia beads (0.3 mm). The face got a note. The average particle size of the pigment particles obtained by this dispersion was 13 Onm.
• Diethylene glycol getyl ether 60 Diethylene glycol getyl ether 60.
• Example 20 The solvent used in Example 20 was replaced with the solvent described above, 3.0 parts by weight was used in place of the radish instead of CI PIGMENT RED 122, and the dispersant was a dispersant (a polyester polymer compound, An oil-based ink ink for ink jet word Sl was prepared in the same manner except that 4.0 parts by weight was used instead of “SOLSPERS 33 500” manufactured by Abyssia Corporation. Viscosity 4.2 mPa ⁇ s (20 ° C).
• the above solvent was used in place of melting in Example 20, 3.0 parts by weight of the coloring material was used instead of IPIGMENT YELLOW150, and the dispersing agent was a dispersing agent (polyester based
• An oil-based ink for ink jet was prepared in the same manner except that 4.0 parts by weight of the molecular compound, “SOLSPERS 33500” manufactured by Abyssia Co., Ltd.) were used. Viscosity 4.3 mPa-s (20 ° C).
• the inks prepared in Specific Examples 6 to 22 and Comparative Examples 5 to 8 were loaded into an ink jet printer (MJ-8000C; Seiko Epson), and the polyvinyl chloride film (Vucal 900: Lintechne ⁇
• Printed The printability of the obtained specific examples 6 to 22 and comparative examples 5 to 8 was evaluated in the same manner as described above. Tables 2 and 3 show the results.
• the oil-based ink for an ink jet of the present invention is suitable for printing on polyvinyl chloride, and is excellent in all of print quality, print stability, print drying property, and ink storage stability.

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

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