WO2019188995A1 - 白インク、インクセット、及び記録方法 - Google Patents
白インク、インクセット、及び記録方法 Download PDFInfo
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- WO2019188995A1 WO2019188995A1 PCT/JP2019/012529 JP2019012529W WO2019188995A1 WO 2019188995 A1 WO2019188995 A1 WO 2019188995A1 JP 2019012529 W JP2019012529 W JP 2019012529W WO 2019188995 A1 WO2019188995 A1 WO 2019188995A1
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- 238000012545 processing Methods 0.000 description 1
- ULWHHBHJGPPBCO-UHFFFAOYSA-N propane-1,1-diol Chemical compound CCC(O)O ULWHHBHJGPPBCO-UHFFFAOYSA-N 0.000 description 1
- 125000004742 propyloxycarbonyl group Chemical group 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
- IZMJMCDDWKSTTK-UHFFFAOYSA-N quinoline yellow Chemical compound C1=CC=CC2=NC(C3C(C4=CC=CC=C4C3=O)=O)=CC=C21 IZMJMCDDWKSTTK-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical class OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000005930 sec-butyloxycarbonyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(OC(*)=O)C([H])([H])[H] 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000019259 sodium dehydroacetate Nutrition 0.000 description 1
- 229940079839 sodium dehydroacetate Drugs 0.000 description 1
- DZCAZXAJPZCSCU-UHFFFAOYSA-K sodium nitrilotriacetate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CC([O-])=O DZCAZXAJPZCSCU-UHFFFAOYSA-K 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- LROWVYNUWKVTCU-STWYSWDKSA-M sodium sorbate Chemical compound [Na+].C\C=C\C=C\C([O-])=O LROWVYNUWKVTCU-STWYSWDKSA-M 0.000 description 1
- 235000019250 sodium sorbate Nutrition 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- DSOWAKKSGYUMTF-GZOLSCHFSA-M sodium;(1e)-1-(6-methyl-2,4-dioxopyran-3-ylidene)ethanolate Chemical compound [Na+].C\C([O-])=C1/C(=O)OC(C)=CC1=O DSOWAKKSGYUMTF-GZOLSCHFSA-M 0.000 description 1
- XNRNJIIJLOFJEK-UHFFFAOYSA-N sodium;1-oxidopyridine-2-thione Chemical compound [Na+].[O-]N1C=CC=CC1=S XNRNJIIJLOFJEK-UHFFFAOYSA-N 0.000 description 1
- HCJLVWUMMKIQIM-UHFFFAOYSA-M sodium;2,3,4,5,6-pentachlorophenolate Chemical compound [Na+].[O-]C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl HCJLVWUMMKIQIM-UHFFFAOYSA-M 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229950006451 sorbitan laurate Drugs 0.000 description 1
- 235000011067 sorbitan monolaureate Nutrition 0.000 description 1
- 239000001593 sorbitan monooleate Substances 0.000 description 1
- 235000011069 sorbitan monooleate Nutrition 0.000 description 1
- 229940035049 sorbitan monooleate Drugs 0.000 description 1
- 239000001587 sorbitan monostearate Substances 0.000 description 1
- 235000011076 sorbitan monostearate Nutrition 0.000 description 1
- 229940035048 sorbitan monostearate Drugs 0.000 description 1
- 229960005078 sorbitan sesquioleate Drugs 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920005792 styrene-acrylic resin Polymers 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- XSOKHXFFCGXDJZ-UHFFFAOYSA-N telluride(2-) Chemical compound [Te-2] XSOKHXFFCGXDJZ-UHFFFAOYSA-N 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000005931 tert-butyloxycarbonyl group Chemical group [H]C([H])([H])C(OC(*)=O)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- UWHCKJMYHZGTIT-UHFFFAOYSA-N tetraethylene glycol Chemical compound OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 239000006234 thermal black Substances 0.000 description 1
- 125000001544 thienyl group Chemical group 0.000 description 1
- YUKQRDCYNOVPGJ-UHFFFAOYSA-N thioacetamide Chemical group CC(N)=S YUKQRDCYNOVPGJ-UHFFFAOYSA-N 0.000 description 1
- 125000001391 thioamide group Chemical group 0.000 description 1
- YODZTKMDCQEPHD-UHFFFAOYSA-N thiodiglycol Chemical compound OCCSCCO YODZTKMDCQEPHD-UHFFFAOYSA-N 0.000 description 1
- 229950006389 thiodiglycol Drugs 0.000 description 1
- JOUDBUYBGJYFFP-FOCLMDBBSA-N thioindigo Chemical compound S\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2S1 JOUDBUYBGJYFFP-FOCLMDBBSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 description 1
- JSPLKZUTYZBBKA-UHFFFAOYSA-N trioxidane Chemical class OOO JSPLKZUTYZBBKA-UHFFFAOYSA-N 0.000 description 1
- GRXOWOKLKIZFNP-UHFFFAOYSA-N undecane-1,1-diol Chemical compound CCCCCCCCCCC(O)O GRXOWOKLKIZFNP-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
-
- 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
- C09D11/322—Pigment inks
-
- 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
- B41J2/21—Ink jet for multi-colour printing
- B41J2/2107—Ink jet for multi-colour printing characterised by the ink properties
-
- 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
- B41J2/21—Ink jet for multi-colour printing
- B41J2/2107—Ink jet for multi-colour printing characterised by the ink properties
- B41J2/2114—Ejecting specialized liquids, e.g. transparent or processing liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
- C09D11/104—Polyesters
-
- 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
- C09D11/40—Ink-sets specially adapted for multi-colour inkjet printing
-
- 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
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
-
- 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
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
- D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
- D06P1/5285—Polyurethanes; Polyurea; Polyguanides
-
- 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
Definitions
- the present invention relates to a white ink, an ink set, and a recording method.
- Examples of the colorant used in the inkjet printing method include water-soluble dyes.
- the water-soluble dye has a mechanism for causing a colorant to penetrate into the inside of the fiber to develop a color, has a clear hue, and has a wide reproducible color gamut.
- water-soluble dyes have low light resistance; a process such as fixing after the dye is attached to the fiber and washing with water is necessary; and processing of waste dye liquid generated by washing and the like is complicated. Have For this reason, attention has been paid to the use of a water-insoluble colorant in place of the water-soluble dye.
- a method of forming a color image by further attaching a color ink after forming a white base by attaching a white ink containing a white pigment to a fiber Is generally known.
- a color ink other than white is directly printed on dark fibers including black, the color of the color ink may not be recognized visually. For this reason, when textiles of colors other than white are printed with color ink, a white base is usually formed.
- Patent Documents 1 and 2 disclose inks containing a white pigment.
- the present invention provides a white ink having a high whiteness, hardly cracking even when a recording material is stretched, and capable of forming a base with little unevenness, and a recording method using the white ink. This is the issue.
- the present invention also provides an ink set capable of forming a color image with good solid filling when a color ink is adhered on a base formed of white ink, and a recording method using the ink set. Providing is another issue.
- a white ink containing a white pigment, a polycarbonate urethane resin, a polyether urethane resin, and water 2) The white ink as described in 1) above, further containing a water-soluble organic solvent. 3) The white ink as described in 1) or 2) above, which further contains a surfactant. 4) The white ink according to 3), wherein the surfactant is at least one surfactant selected from acetylene glycol and polyalkylene glycol. 5) 5. The white ink according to any one of 1) to 4), wherein the total content of the polycarbonate urethane resin and the polyether urethane resin is 10 to 20% by mass.
- the white ink according to any one of 1) to 5) and one or more types of color inks are provided,
- the color ink is a water-based ink containing a colorant other than a white pigment;
- An ink set in which a difference in surface tension between the white ink and the color ink at 25 ° C. is ⁇ 0 to 3 mN / m.
- the recording material is a fiber selected from the group consisting of polyester fiber, cellulose fiber, polyamide fiber, and natural fiber, a mixed fiber containing these fibers, or a fabric containing these fibers.
- the recording method according to any one of the above. 12) A fiber to which the white ink according to any one of 1) to 5) is adhered. 13) A fiber to which both the white ink and one or more color inks included in the ink set according to 6) are attached.
- a white ink having high whiteness, hardly cracking even when a recording material is stretched, and capable of forming a base with little unevenness, and a recording method using the white ink are provided.
- an ink set capable of forming a color image with good solid filling when color ink is adhered onto a base formed of white ink, and recording using the ink set A method can be provided.
- CI means a color index
- the white ink according to the present embodiment contains a white pigment, a polycarbonate urethane resin, a polyether urethane resin, and water.
- the white pigment is not particularly limited, and examples thereof include white inorganic pigments such as titanium oxide, zinc oxide, zinc sulfide, antimony oxide, and zirconium oxide; white organic pigments such as white hollow resin particles and polymer particles; .
- white inorganic pigments such as titanium oxide, zinc oxide, zinc sulfide, antimony oxide, and zirconium oxide
- white organic pigments such as white hollow resin particles and polymer particles; .
- C.I. I. Pigment white 1 basic lead carbonate
- C.I. I. Pigment white 4 zinc oxide
- C.I. I. Pigment White 5 mixedture of zinc sulfide and barium sulfate
- C.I. I. Pigment white 6 titanium oxide
- C.I. I. Pigment White 6 1 (titanium oxide containing other metal oxides), C.I. I.
- Pigment white 7 (zinc sulfide), C.I. I. Pigment white 18 (calcium carbonate), C.I. I. Pigment white 19 (clay), C.I. I. Pigment white 20 (titanium mica), C.I. I. Pigment white 21 (barium sulfate), C.I. I. Pigment White 22 (natural barium sulfate), C.I. I. Pigment white 23 (gross white), C.I. I. Pigment white 24 (alumina white), C.I. I. Pigment white 25 (gypsum), C.I. I. Pigment White 26 (magnesium oxide / silicon oxide), C.I. I. Pigment white 27 (silica), C.I. I. And CI Pigment White 28 (anhydrous calcium silicate).
- titanium oxide surface-treated with silica or alumina can also be used.
- the crystal form of titanium oxide is preferably a rutile type. Specific examples include Tipaque (registered trademark) R-580, R-670, R-780, R-850, R-855, CR-60 (above, manufactured by Ishihara Sangyo Co., Ltd.); JR-301, JR-403 , JR-405, JR-804, JR-806, JR-600A, JR-800, etc.
- the white pigment can also be obtained as a dispersion (slurry) that has already been dispersed.
- a dispersion examples include TF-5760 WHITE (D2B) (a titanium oxide slurry manufactured by Dainichi Seika Kogyo Co., Ltd., solid concentration of titanium oxide: 60%, average particle size: 300 nm) and the like.
- a white pigment in a solid state can be dispersed using a dispersant to form a dispersion.
- a dispersing agent It does not specifically limit as a dispersing agent, According to the objective, well-known various dispersing agents can be used. Specific examples include styrene and derivatives thereof; vinyl naphthalene and derivatives thereof; aliphatic alcohol esters of ⁇ , ⁇ -ethylenically unsaturated carboxylic acids; (meth) acrylic acid and derivatives thereof; maleic acid and derivatives thereof; Its derivatives; furric acid and its derivatives; at least two monomers selected from the group consisting of vinyl acetate, vinyl alcohol, vinyl pyrrolidone, (meth) acrylamide, and derivatives thereof (preferably at least one is hydrophilic) Monomer)), and the like.
- the copolymer include a block copolymer, a random copolymer, a graft copolymer, and a salt thereof.
- (meth) acrylic acid is used to mean both “acrylic acid” and “methacrylic acid”.
- (meth) acrylamide is used to mean both “acrylamide” and “methacrylamide”.
- the dispersant can be synthesized or obtained as a commercial product.
- Specific examples of commercially available products include Jonkrill 62, 67, 68, 678, 687 (all are styrene-acrylic resins made by Johnson Polymer); Movinyl S-100A (modified Hoechst synthetic vinyl acetate resin); Julimer AT-210 (Nippon Pure Chemicals Co., Ltd. polyacrylic acid ester copolymer);
- Examples of the AB block polymer include a dispersant disclosed in International Publication No. 2013/115071.
- polycarbonate urethane resin examples include resins obtained by reacting polyol or polycarbonate polyol with polyisocyanate. In these, the resin obtained by making a polyol and polyisocyanate react is preferable.
- the polyol is not particularly limited as long as it is a compound having two or more hydroxy groups in one molecule.
- alkanediol is preferable, C2-C20 alkanediol is more preferable, C2-C10 alkanediol is more preferable, and C4-C6 alkanediol is particularly preferable.
- the alkanediol may be linear, branched or cyclic. Of these, linear or branched alkanediols are preferred.
- Specific examples include ethylene glycol, propylene glycol, 1,3-propanediol, butanediol, pentanediol, hexanediol, 3-methyl-1,5-pentanediol, heptanediol, octanediol, undecanediol, dodecanediol, etc. Is mentioned.
- the polycarbonate polyol is not particularly limited, and examples thereof include a compound obtained by a transesterification reaction between a carbonate ester and a polyol in the presence of a catalyst; a compound obtained by reacting phosgene and bisphenol A;
- Examples of the carbonate ester include methyl carbonate, dimethyl carbonate, ethyl carbonate, diethyl carbonate, cyclocarbonate, diphenyl carbonate, and the like.
- polystyrene resin examples include ethylene glycol, diethylene glycol, 1,2-propylene glycol, dipropylene glycol, 1,4-butanediol, 1,5-pentanediol, 3-methyl-1,5-pentanediol, and neopentyl glycol.
- low molecular diol compounds such as 1,4-cyclohexanediol; polyethylene glycol, polypropylene glycol; and the like.
- the polyisocyanate is not particularly limited and can be appropriately selected according to the purpose. Specific examples include 1,3-phenylene diisocyanate, 1,4-phenylene diisocyanate, 2,4-tolylene diisocyanate (TDI), 2,6-tolylene diisocyanate, 4,4′-diphenylenemethane diisocyanate (MDI).
- Aromatic polyisocyanate compounds such as diphenylmethane, 1,5-naphthylene diisocyanate, m-isocyanatophenylsulfonyl isocyanate, p-isocyanatophenylsulfonyl isocyanate; ethylene diisocyanate, tetramethylene diisocyanate, hexamethylene diiso Anate (HDI), dodecamethylene diisocyanate, 1,6,11-undecane triisocyanate, 2,2,4-trimethylhexamethylene diisocyanate, lysine diisocyanate, 2,6-diisocyanatomethylcaproate, bis (2-isocyan
- Examples of commercially available polycarbonate urethane resins include U-coat UX-320, 390, Permarin UA-368 (manufactured by Sanyo Chemical Co., Ltd.), Hydran WLS-201 (manufactured by DIC Corporation), and the like.
- polyether urethane resin examples include resins obtained by reacting a polyether having two hydroxy groups in the molecule with a polyisocyanate.
- examples of the polyisocyanate include the same polyisocyanates as described in the section of the polycarbonate polyurethane resin, including preferable ones.
- Polyether having two hydroxy groups in the molecule includes poly (oxyalkylene) glycol.
- the poly (oxyalkylene) glycol may be linear, branched or cyclic, preferably linear or branched, and more preferably linear.
- the number of carbon atoms of the alkylene moiety is usually C2-C12, preferably C2-C10, more preferably C2-C8, still more preferably C2-C6, and particularly preferably C4-C6. When there are a plurality of alkylene moieties, the number of carbon atoms of these alkylenes may be the same or different.
- the repeating number of “oxyalkylene” in the poly (oxyalkylene) glycol is usually 2 to 40, preferably 2 to 30, more preferably 2 to 20, and further preferably 2 to 15.
- NeoRez R-967 manufactured by Enomoto Kasei Co., Ltd.
- Permarin UA-150 manufactured by Sanyo Chemical Industries, Ltd.
- water As water, it is preferable to use water with few impurities such as metal ions and inorganic salts. Examples of such water include ion exchange water and distilled water.
- the white ink according to this embodiment preferably further contains a water-soluble organic solvent.
- the water-soluble organic solvent is not particularly limited, and examples thereof include polyhydric alcohols and pyrrolidones.
- polyhydric alcohols examples include C3-C6 polyhydric alcohols having 2 or 3 hydroxy groups; polyalkylene glycols having 2 or more repeating units and a molecular weight of about 20000 or less, preferably liquid polyalkylene glycols, Preferably poly C2-C4 alkylene glycol, more preferably poly C2-C3 alkylene glycol; alkyl ether of polyalkylene glycol, preferably monoalkyl ether of polyalkylene glycol; alkylene oxide adduct of glycerol; alkylene oxide adduct of diglycerol And the like.
- Examples of the C3-C6 polyhydric alcohol having two or three hydroxy groups include glycerin, propylene glycol, 1,3-propanediol, 1,2-butanediol, 1,4-butanediol, and 1,2-pentanediol. 1,3-pentanediol, 1,5-pentanediol, 1,2-hexanediol, 1,6-hexanediol and the like.
- Polyalkylene glycols having a repeating unit of 2 or more and a molecular weight of about 20000 or less include diethylene glycol, triethylene glycol, polyethylene glycol (PEG200, PEG400, PEG800, etc.); dipropylene glycol, tripropylene glycol, polypropylene glycol; Unilube 50TG-32 (Manufactured by NOF Corporation);
- alkyl ether of polyalkylene glycol examples include compounds in which the hydroxy group of polyalkylene glycol described above is substituted with an alkyl group.
- alkyl group examples include linear, branched, or cyclic alkyl groups. In these, a linear or branched alkyl group is preferable, and a linear alkyl group is more preferable.
- the carbon number of the alkyl group is usually C1-C6, preferably C1-C4. Specific examples include butyl diglycol.
- Examples of the alkylene oxide in the alkylene oxide adduct of glycerin usually include C2-C4, preferably C2-C3 alkylene oxide.
- the mass average molecular weight of these compounds is usually 300 to 5000, preferably 340 to 4500.
- the mass average molecular weight can be measured by GPC (gel permeation chromatography).
- Specific examples of commercially available products include Sannix GP series (manufactured by Sanyo Chemical Industries); Braunon GL series (manufactured by Aoki Yushi Kogyo Co., Ltd.); Wilbride S-753 (manufactured by NOF Corporation); .
- Examples of the alkylene oxide in the diglycerin alkylene oxide adduct usually include C2-C4, preferably C2-C3 alkylene oxide.
- the mass average molecular weight of these compounds is usually 300 to 5000, preferably 340 to 4500.
- Specific examples of commercially available products include SC-P400, SC-P750, SC-P1000, SC-P1200, SC-P1600; SC-E450, SC-E750, SC-E1000, SC-E1500, SC-E2000, SC- E3000, SC-E4500 (supplied by Sakamoto Pharmaceutical Co., Ltd.); Unilube DGP-700, DGP-700F (supplied by NOF Corporation);
- pyrrolidones examples include 2-pyrrolidone and N-methyl-2-pyrrolidone.
- the white ink according to this embodiment preferably further contains a surfactant.
- a surfactant By containing the surfactant, an increase in viscosity of the white ink, aggregation of components, and the like are suppressed, and the storage stability is improved.
- the kind of surfactant is not specifically limited, For example, at least 1 sort (s) of surfactant selected from acetylene glycol and polyalkylene glycol is preferable. Of these, the use of polyalkylene glycol tends to improve whiteness and show-through.
- acetylene glycol surfactant examples include 2,4,7,9-tetramethyl-5-decyne-4,7-diol, 2,4,7,9-tetramethyl-5-decyne-4,7- Preferred are surfactants selected from diols, 2,4-dimethyl-5-decyn-4-ol, 2,4-dimethyl-5-decyn-4-ol, or alkylene oxide adducts thereof.
- alkylene oxide examples include C2-C4 linear, branched, or cyclic alkylene oxide. Of these, linear or branched alkylene oxides are preferred.
- ether for example, 2,5,8,11-tetraethyl-6-dodecine-5,8-diol ethoxylate
- Specific examples of commercially available products include Olphine series such as Olfin 104, 104PG50, E1010 (manufactured by Air Products); Dynal series such as Dynal 604, 607 (manufactured by Air Products); Surffiol 440, 465, 61 etc. Nord series (manufactured by Nissin Chemical Industry Co., Ltd.);
- polyalkylene glycol surfactant examples include polyoxyethylene alkyl ether, fatty acid ethylene oxide adduct, higher alkylamine ethylene oxide adduct, and polyoxyalkylene glycol (preferably polyoxy C2-C4 alkylene glycol, more preferably polyoxyethylene).
- a surfactant selected from polyoxypropylene glycol) is preferred.
- polyoxyalkylene glycol is preferred.
- polyoxyethylene alkyl ether examples include polyoxyalkylene branched decyl ether, polyoxyalkylene tridecyl ether, polyoxyethylene isodecyl ether, polyoxyalkylene lauryl ether and the like.
- Specific examples of commercially available products include Neugen XL-40, 50, 60, 70, 80, 100, 140, 160, Neugen TDS-30, 50, 70, 80, 90, 100, 120, Hightenol LA-10, LA-12, LA-16, PS-06, PS-15 (above, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) and the like.
- fatty acid ethylene oxide adduct examples include stearic acid ethylene oxide adduct and polyethylene glycol laurate.
- Specific examples of commercially available products include Emanon 1112, 3199V, 3299V, 3299VR, 3201M-V (above, manufactured by Kao Corporation) and the like.
- Examples of commercially available products of higher alkylamine ethylene oxide adducts include Amit 102, 105, 105A, 302, 320 (above, manufactured by Kao Corporation).
- polyoxyalkylene glycol Commercial products of polyoxyalkylene glycol include Emulgen PP-290 (manufactured by Kao Corporation, polyethylene glycol / polypropylene glycol 160/30 copolymer); Newpol PE-61, PE-62, PE-64, PE-68 PE-71, PE-74, PE-75, PE-78, PE-108 (manufactured by Sanyo Chemical Industries, Ltd., polyoxyethylene polyoxypropylene block polymer); Epan 410, 420, 450, 485, 680, 710 720, 740, 750, 785, U-103, U-105, U-108 (Daiichi Kogyo Seiyaku Co., Ltd., polypropylene glycol has a weight average molecular weight of about 950 to 4000 and a polyoxyethylene content of 5 to About 95% polyoxyethylene polyoxypropy Glycol); and the like.
- Emulgen PP-290 manufactured by Kao Corporation, polyethylene glycol / polyprop
- the white ink according to the present embodiment may further contain an ink preparation agent other than those described above as necessary.
- the ink preparation agent include antifungal agents, preservatives, pH adjusters, chelating reagents, rust inhibitors, water-soluble ultraviolet absorbers, water-soluble polymer compounds, and antioxidants.
- antifungal agent examples include sodium dehydroacetate, sodium benzoate, sodium pyridinethione-1-oxide, ethyl p-hydroxybenzoate, 1,2-benzisothiazolin-3-one, and salts thereof.
- Examples of the preservative include organic sulfur, organic nitrogen sulfur, organic halogen, haloaryl sulfone, iodopropargyl, haloalkylthio, nitrile, pyridine, 8-oxyquinoline, benzothiazole, Isothiazoline, dithiol, pyridine oxide, nitropropane, organotin, phenol, quaternary ammonium salt, triazine, thiazine, anilide, adamantane, dithiocarbamate, brominated indanone, benzyl brom Acetate-based and inorganic salt-based compounds are exemplified.
- Examples of the organic halogen compound 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 anhydrous sodium acetate, sodium sorbate, sodium benzoate, trade names Proxel GXL (S) and Proxel XL-2 (S) manufactured by Arch Chemical Co., Ltd.
- any substance can be used as long as it can control the pH of the ink within a range of, for example, 5 to 11 without adversely affecting the prepared ink.
- the pH adjuster include alkali metal hydroxides, alkaline earth metal hydroxides, aliphatic amine compounds, alcohol amine compounds, and the like.
- the alkali metal hydroxide include lithium hydroxide, sodium hydroxide, and potassium hydroxide.
- the alkaline earth metal hydroxide include beryllium hydroxide, magnesium hydroxide, calcium hydroxide, and strontium hydroxide. Among these, alkali metal hydroxides are preferable, and lithium hydroxide and sodium hydroxide are more preferable.
- Examples of the aliphatic amine compound include ammonia, monomethylamine, dimethylamine, trimethylamine, monoethylamine, dimethylamine, trimethylamine, and preferably ammonia or triethylamine.
- Examples of the alcohol amine compound include monoethanolamine, diethanolamine, triethanolamine, monopropanolamine, dipropanolamine, tripropanolamine, methylethanolamine, dimethylethanolamine, N-methyldiethanolamine, preferably tertiary amine. More preferably triethanolamine.
- alkali metal carbonates such as lithium carbonate, sodium carbonate, sodium bicarbonate and potassium carbonate
- alkali metal salts of organic acids such as sodium silicate and potassium acetate
- phosphoric acid such as disodium phosphate Salt
- 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.
- water-soluble ultraviolet absorbers examples include sulfonated benzophenone compounds, benzotriazole compounds, salicylic acid compounds, cinnamic acid compounds, and triazine compounds.
- water-soluble polymer compounds examples include polyvinyl alcohol, cellulose derivatives, polyamines and polyimines.
- organic and metal complex anti-fading agents can be used.
- organic anti-fading agents include hydroquinones, alkoxyphenols, dialkoxyphenols, phenols, anilines, amines, indanes, chromans, alkoxyanilines, heterocycles, and the like.
- each of the components described above may be used alone or in combination of two or more.
- the content of each component in the total mass of the white ink according to this embodiment is as follows. The remainder other than these is water.
- White pigment Usually 1-30%, preferably 5-20%, more preferably 5-15%.
- Polycarbonate urethane resin Usually 1-30%, preferably 5-20%, more preferably 5-15%.
- Polyether urethane resin Usually 1 to 30%, preferably 1 to 20%, more preferably 1 to 15%.
- Water-soluble organic solvent Usually 0 to 50%, preferably 15 to 35%, more preferably 20 to 30%.
- Surfactant Usually 0 to 5%, preferably 0.2 to 2%, more preferably 0.5 to 1%.
- Ink preparation Usually 0 to 5%, preferably 0.2 to 2%, more preferably 0.5 to 1%.
- the total content of the polycarbonate urethane resin and the polyether urethane resin is preferably 10 to 20% by mass.
- the content of the dispersant relative to 1 part of the white pigment is usually 0.1 to 1 part, preferably 0.1 to 0.6 part, more preferably 0.00. 2 to 0.5 parts.
- the method for preparing the white ink according to the present embodiment is not particularly limited, and a known preparation method can be employed. As an example, a method of preparing a white ink by adding and stirring each component can be mentioned. Also, when using a white pigment that does not have self-dispersibility, first prepare a dispersion by mixing the white pigment, dispersant, and water, then add the remaining components and stir. Can be adopted. The obtained white ink may be subjected to microfiltration by a known method as necessary to separate solid impurities. For example, when discharging the white ink according to the present embodiment with an ink jet printer, it is preferable to perform microfiltration.
- the white ink according to the present embodiment has high whiteness, hardly cracks even when the recording material is stretched, and can form a background with little unevenness. In particular, it is extremely useful as a white ink for fibers.
- the white ink according to the present embodiment can suppress the fluffing of the fibers to which the white ink is adhered as an effect other than the above. For this reason, when an image is printed on the pretreated fiber, an image with excellent sharpness can be obtained. Further, the rub resistance and wash fastness of the recorded image can be improved.
- the recording method according to the present embodiment using the above-described white ink performs recording by attaching the above-described white ink to a recording material.
- a method for attaching the white ink to the recording material is not particularly limited, and a brush, a brush, a roll coater, a bar coater, an ink jet printer, or the like can be used depending on the purpose.
- recording can be performed by ejecting white ink using an ink jet printer and attaching it to a recording material.
- the recording material is not particularly limited, but fibers and fabrics that are structures thereof are preferable.
- the type of fiber is not particularly limited. Examples thereof include fibers selected from the group consisting of polyester, cellulose, polyamide, and natural fibers, or blended fibers thereof.
- Examples of the polyester fiber include a fiber mainly composed of polyethylene terephthalate.
- Examples of the cellulose fiber include cotton, cotton, rayon, triacetate fiber, and diacetate fiber.
- Examples of polyamide fibers include nylon fibers.
- Examples of natural fibers include silk and wool.
- the fiber may be provided with an ink receiving layer (bleeding prevention layer).
- a method of providing an ink receiving layer on a fiber is known, and such a fiber can be purchased as a commercial product.
- the ink receiving layer is not particularly limited as long as it has the function.
- the fiber color includes all dark colors and light colors.
- white ink can be attached to white fibers as necessary.
- the fiber can be dried if necessary.
- the fiber can be dried usually at room temperature (about 25 ° C.) to 200 ° C., preferably at room temperature to about 180 ° C. for several minutes.
- the drying temperature By setting the drying temperature to 110 ° C. or higher, the fixability of the ink to the fiber tends to be good.
- the heating temperature By setting the heating temperature to 200 ° C. or less, it is possible to prevent deterioration of the components contained in the fiber and the white ink by heat.
- the ink set according to the present embodiment includes a white ink and one or more color inks, and the color ink is a water-based ink containing a colorant other than a white pigment.
- the white ink and the color ink at 25 ° C.
- the difference in surface tension is ⁇ 0 to 3 mN / m.
- the difference in surface tension is preferably ⁇ 0 to 2.5 mN / m, and more preferably ⁇ 0 to 2 mN / m.
- the surface tension of the white ink is equal to or larger than the surface tension of the color ink.
- the surface tension of each ink at 25 ° C. is measured by a plate method using a CBVP-Z surface tension meter manufactured by Kyowa Interface Science Co., Ltd.
- the obtained measurement value is rounded off to the first decimal place, and this is used as the surface tension of each ink.
- the type of color ink provided in the ink set according to the present embodiment is not particularly limited.
- an ink set including four color inks of yellow, red, blue, and black in addition to the white ink may be used.
- an ink set may further include one or more kinds of color inks such as green, violet, orange, and brown as necessary.
- the surface tension of the white ink at 25 ° C. is usually 31 to 35 mN / m, preferably 32 to 34 mN / m.
- the color ink is not particularly limited as long as it is a water-based ink containing a colorant other than a white pigment.
- the colorant include known dyes and pigments. Among them, C.I. I. Numbered colorants are preferred, and water-insoluble colorants are more preferred.
- water it is preferable to use water with few impurities such as metal ions and inorganic salts. Examples of such water include ion exchange water and distilled water.
- the water-insoluble colorant generally has a solubility in water at 25 ° C. of 3 g / L or less, preferably 1 g / L or less, more preferably 500 mg / L or less, and even more preferably 100 mg / L or less. Means.
- colorants include C.I. I. Disperse, C.I. I. Colorants selected from Solvent and pigments. Of these, pigments are preferred. Examples of the pigment include inorganic pigments, organic pigments, extender pigments, and the like.
- Examples of inorganic pigments include carbon black, metal oxide, metal hydroxide, metal sulfide, ferrocyanide, and metal chloride. Among these, carbon black is preferable as the black pigment.
- Examples of carbon black include thermal black, acetylene black, oil furnace black, gas furnace black, lamp black, gas black, and channel black. Among these, acetylene black, oil furnace black, gas furnace black, lamp black, and channel black are preferable.
- Specific examples of commercially available products include the Raven series (made by Columbia Carbon Co.); the Monarch series, the Regal series, the Mogu series (above, made by Cabot Corporation); the Color Black series, the Printex series, the Special Black series (above, made by Degussa). ); MA series, MCF series (above, manufactured by Mitsubishi Chemical Corporation);
- organic pigments examples include azo pigments having at least one azo group in the molecule, phthalocyanine pigments, quinacridone pigments, isoindolinone pigments, dioxazine pigments, perylene pigments, perinone pigments, thioindigo pigments, anthraquinone pigments, and quinophthalone pigments. Can be mentioned. Among these, C.I. I. Pigments selected from pigments are preferred. As a specific example, C.I. I.
- extender pigments examples include silica, calcium carbonate, talc, clay, barium sulfate, and white carbon.
- Water-insoluble colorants include C.I. I. Pigments selected from pigments and carbon black are preferred, C.I. I. Pigment yellow, C.I. I. Pigment Red, C.I. I. Pigment blue, C.I. I. Pigment violet, C.I. I. Pigment orange, and C.I. I. More preferred are pigments selected from CI Pigment Green.
- the water-insoluble colorant a single colorant is usually used. However, if necessary, two or more colorants may be used in combination. As an example, a combination example of organic pigment and extender pigment; organic pigment and inorganic pigment; In addition to organic pigments and inorganic pigments, extender pigments can also be used in combination for improving fluidity. Furthermore, two or more colorants selected from inorganic pigments and organic pigments can be used in combination for adjusting the hue of the dyed product. Hue adjustment is performed for the purpose of obtaining a dyed product with shades; expanding the color gamut of dyeing; For this purpose, several kinds of organic pigments can be used together to adjust the desired hue.
- the color ink contains a water-insoluble colorant, it is preferable to further contain a dispersant.
- the AB block polymer means a polymer in which the A polymer and the B polymer are chemically bonded, and the A polymer and the B polymer mean polymerized polymers obtained by polymerizing different monomers.
- R 1 represents a C1-C8 alkyl group, an aryl group, a substituted aryl group, or an aromatic heterocyclic group.
- R 2 and R 3 each independently represents a hydrogen atom or a C1-C8 alkyl group.
- R 4 represents an aryl group, a substituted aryl group, an aromatic heterocyclic group, an acyl group, an amide group, an oxycarbonyl group, or a cyano group.
- R 1 has the same meaning as R 1 in formula (1).
- the C1-C8 alkyl group for R 1 is a methyl group, an ethyl group, an n-propyl group, an isopropyl group, a cyclopropyl group, an n-butyl group, a sec-butyl group, or a tert-butyl group.
- a linear, branched, or cyclic alkyl group having 1 to 8 carbon atoms such as a cyclobutyl group, an n-pentyl group, an n-hexyl group, an n-heptyl group, and an n-octyl group.
- a linear or branched alkyl group having 1 to 4 carbon atoms is preferable, and a methyl group, an ethyl group, or an n-butyl group is more preferable.
- Examples of the aryl group for R 1 include a phenyl group and a naphthyl group, and a phenyl group is preferable.
- Examples of the substituted aryl group for R 1 include a phenyl group having a substituent and a naphthyl group having a substituent.
- substituents examples include a halogen atom, a hydroxyl group, an alkoxy group, an amino group, a nitro group, a cyano group, —CORa (Ra represents a C1-C8 alkyl group, an aryl group, a C1-C8 alkoxy group, or an aryloxy group). And a carbonyl-containing group, a sulfonyl group, a trifluoromethyl group, and the like. Of these, a trifluoromethyl group is preferred.
- the number of these substituents is usually one or two.
- the aryl group is a phenyl group, it preferably has a substituent at the para-position or ortho-position.
- the aromatic heterocyclic group for R 1 include a pyridyl group, a pyrrole group, a furyl group, and a thienyl group.
- examples of the C1-C8 alkyl group for R 2 or R 3 include the same as the C1-C8 alkyl group described for R 1 .
- examples of the aryl group, substituted aryl group, and aromatic heterocyclic group for R 4 include the same groups as those described for R 1 .
- examples of the acyl group for R 4 include a formyl group, an acetyl group, and a benzoyl group.
- Examples of the amide group in R 4 include acetamide group, malonamide group, succinamide group, maleamide group, benzamide group, 2-furamide group and other carboxylic acid amide groups; thioacetamide group, hexanedithioamide group, thiobenzamide group, methanethiosulfone Thioamide groups such as amide groups; Selenoamide groups such as selenoacetamide groups, hexanediselenoamide groups, selenobenzamide groups, methaneselenosulfonamides; N-methylacetamide groups, benzanilide groups, cyclohexanecarboxanilide groups, 2,4′- And N-substituted amide groups such as a dichloroacetanilide group.
- Examples of the oxycarbonyl group in R 4 include a group represented by —COORb (Rb represents a hydrogen atom, a C1-C8 alkyl group, or an aryl group). Specific examples include carboxy group, methoxycarbonyl group, ethoxycarbonyl group, propoxycarbonyl group, n-butoxycarbonyl group, sec-butoxycarbonyl group, tert-butoxycarbonyl group, n-pentoxycarbonyl group, phenoxycarbonyl group and the like. Can be mentioned. Of these, a methoxycarbonyl group and an ethoxycarbonyl group are preferable.
- R 1 is a C1-C4 alkyl group
- R 2 and R 3 are each independently a hydrogen atom or a C1-C4 alkyl group
- examples include compounds in which R 4 is an aryl group, a substituted aryl group, or an oxycarbonyl group.
- R 1 is a C1-C4 alkyl group
- R 2 and R 3 are each independently a hydrogen atom or a C1-C4 alkyl group
- R 4 is a phenyl group, a substituted phenyl group, a methoxycarbonyl group, Or the compound which is an ethoxycarbonyl group is mentioned.
- organic tellurium compound represented by the above formula (1) examples include, for example, (methylterranylmethyl) benzene, (1-methylterranylethyl) benzene, 1-chloro-4- (1-methylterranyl) Ethyl) benzene, 1-trifluoromethyl-4- (1-methylterranylethyl) benzene, 3,5-bis-trifluoromethyl-1- (1-methylterranylethyl) benzene, 1,2,3, 4,5-pentafluoro-6- (1-methylterranylethyl) benzene, 2-methylterranylpropionitrile, (2-methylterranylpropyl) benzene, methyl 2-methylterranyl-2-methyl-propinate, ethyl Examples include 2-methyl teranyl-2-methyl-propinate, 2-methyl teranyl-2-methyl-propionitrile, and the like.
- the organic tellurium compound represented by the above formula (1) can be used to obtain a desired number average molecular weight polymer by appropriately adjusting the amount used.
- the preferred amount used is generally a value obtained by dividing the mass of the raw material vinyl monomer (unit: grams) by the number average molecular weight of the target polymer (unit of use amount is the number of moles). It is preferable to use an amount of about 3 to 3 times.
- a ditellurium compound represented by the above formula (2) may be further added. it can.
- ditellurium compound represented by the above formula (2) examples include dimethylditelluride, diethylditelluride, di-n-propylditelluride, diisopropylditelluride, dicyclopropylditelluride, di- n-butyl ditelluride, di-sec-butyl ditelluride, di-tert-butyl telluride, dicyclobutyl telluride, diphenyl ditelluride, bis- (p-methoxyphenyl) ditelluride, bis- (p-aminophenyl) ditelluride, bis- ( and p-nitrophenyl) ditelluride, bis- (p-cyanophenyl) ditelluride, bis- (p-sulfonylphenyl) ditelluride, dinaphthylditelluride, and dipyridylditelluride.
- dimethyl ditelluride, diethyl ditelluride, di-n-propyl ditelluride, di-n-butyl ditelluride, and diphenyl ditelluride are preferable, and dimethyl ditelluride, diethyl ditelluride, di- n-Propyl ditelluride and di-n-butyl ditelluride are more preferable.
- the amount used is usually 0.01 to 100 mol when the total amount of the organic tellurium compound represented by the above formula (1) is 1 mol,
- the amount is preferably 0.1 to 10 mol, more preferably 0.1 to 5 mol.
- an azo polymerization initiator may be used in addition to the organic tellurium compound.
- the azo polymerization initiator is not particularly limited as long as it is an initiator used for ordinary radical polymerization.
- AIBN 2,2′-azobis (isobutyronitrile)
- AMBN 2,2′-azobis (2 -Methylbutyronitrile)
- ADVN 2,2'-azobis (2,4-dimethylvaleronitrile)
- ADVN 1,1'-azobis (1-cyclohexanecarbonitrile)
- ACVA 4,4′-azobis (4-cyanovaleric acid)
- 1,1′-azobis (1-acetoxy-1-phenylethane 2,2 ′ -Azobis (2-methylbutyramide), 2,2'-azobis (4-methoxy-2,4-dimethylvaleronitrile), 2,2'-azobis (2-methyl
- azo polymerization initiators are preferably selected as appropriate according to the reaction conditions.
- ADVN 2,2′-azobis (2,4-dimethylvaleronitrile)
- 2,2′-azobis (4-methoxy-2,4-dimethylvaleronitrile) for low temperature polymerization (40 ° C.
- the amount used is usually 0.01 to 100 mol, preferably 0.1 to 100 mol, when the total amount of the organic tellurium compound represented by the above formula (1) is 1 mol.
- the amount is 10 mol, more preferably 0.1 to 5 mol.
- a dispersant is prepared using any of the mixture with the organic ditellurium compound represented by formula (2) as a polymerization initiator, the prepared dispersant contains the organic tellurium compound.
- the total amount of tellurium in the dispersant can be measured by using a known metal measuring method such as ICP emission analysis or atomic absorption.
- the monomer constituting the A block is one or more monomers represented by the following formula (3), and the monomer constituting the B block is benzyl methacrylate and / or benzyl acrylate. Are preferred.
- R 5 represents a hydrogen atom or an alkyl group which may have 4 carbon atoms
- R 6 represents a hydrogen atom or a methyl group.
- a monomer in which R 5 is a hydrogen atom and R 6 is a methyl group or a monomer in which R 5 is an n-butyl group and R 6 is a methyl group preferable. It is more preferable to use these two types of monomers in combination.
- the monomer constituting the B block is one or more monomers selected from benzyl methacrylate and benzyl acrylate, and preferably benzyl methacrylate.
- the acid value of the dispersant is usually 90 to 200 mgKOH / g, preferably 100 to 150 mgKOH / g, more preferably 100 to 120 mgKOH / g.
- the acid value of the dispersant is usually 90 to 200 mgKOH / g, preferably 100 to 150 mgKOH / g, more preferably 100 to 120 mgKOH / g.
- the mass average molecular weight of the dispersant is preferably 10,000 to 60,000, more preferably 10,000 to 40,000, and even more preferably 15,000 to 30,000. By setting it as such a mass average molecular weight, it exists in the tendency for the stability of a dispersion liquid to improve.
- the ratio of the amount of the dispersant used relative to the total amount of the colorant is preferably 0.1 to 1, more preferably 0.1 to 0.6, and still more preferably 0.2 to 0.4 on a mass basis. . By using this amount, the stability of the dispersion is improved and the image quality of the recorded image tends to be improved.
- a neutralizing agent can be used for the purpose of uniformly dispersing the dispersing agent in water.
- the neutralizing agent include alkali metal hydroxides, alkaline earth metal hydroxides, aliphatic amine compounds, alkanolamine compounds, and the like.
- alkali metal hydroxide examples include lithium hydroxide, sodium hydroxide, and potassium hydroxide.
- alkaline earth metal hydroxide examples include beryllium hydroxide, magnesium hydroxide, calcium hydroxide, and strontium hydroxide. Alkali metal hydroxides are preferred, and lithium hydroxide or sodium hydroxide is more preferred.
- Examples of the aliphatic amine compound include ammonia, monomethylamine, dimethylamine, trimethylamine, monoethylamine, dimethylamine, trimethylamine and the like. Among these, ammonia or triethylamine is preferable.
- alkanolamine compound examples include monoethanolamine, diethanolamine, triethanolamine, monopropanolamine, dipropanolamine, tripropanolamine, methylethanolamine, dimethylethanolamine, N-methyldiethanolamine and the like. Among these, tertiary alkanolamine is preferable, and triethanolamine is more preferable.
- the amount of neutralizing agent used is not particularly limited.
- the neutralization degree is 100% when neutralized with the theoretical equivalent of the acid value of the dispersant, and the neutralizing agent can be used in excess of the theoretical equivalent.
- the degree of neutralization is usually 50 to 200%, preferably 80 to 150%, more preferably 100 to 120%.
- the surface precipitation method is a method for precipitating a dispersant on the surface of the colorant by utilizing a pH adjustment or a difference in solubility in a medium, and includes an acid precipitation method, a phase inversion emulsification method, and the like.
- the interfacial polymerization method is a method in which a monomer, oligomer, or pigment derivative is adsorbed on the surface of a colorant and then a polymerization reaction is performed, and is also called a surface polymerization method. Any of the above methods can be used, but among these, the surface precipitation method is preferable, and the phase inversion emulsification method is more preferable.
- coating the dispersant on the surface of the colorant means that at least a part of the surface of the colorant is coated with the dispersant.
- the average particle diameter of the colorant dispersed by the dispersant is usually 10 to 200 nm, preferably 50 to 150 nm, more preferably 60 to 120 nm. By setting such an average particle diameter, the dispersion stability and the ejection stability are excellent, and the print density of the recorded image can be increased.
- the average particle diameter can be obtained, for example, by measuring the dispersion using a laser light scattering method.
- Examples of the method for dispersing the colorant include a method using a sand mill (bead mill), a roll mill, a ball mill, a paint shaker, an ultrasonic disperser, a microfluidizer, and the like.
- a method using a sand mill is preferable.
- Preparation of a dispersion using a sand mill is preferably carried out under conditions where dispersion efficiency is increased by using beads having a small diameter (0.01 to 1 mm diameter) and increasing the filling rate of beads. By dispersing under such conditions, the particle size of the colorant can be reduced, and a dispersion having good dispersibility can be obtained.
- the color ink contains a water-insoluble colorant, it is preferable to further contain a urethane resin.
- Urethane resin is often marketed in the form of latex (emulsion) and can be easily purchased.
- Specific examples of commercially available products include Permarin UA-150, 200, 310, 368, 3945, Yukot UX-320 latex (Sanyo Kasei Co., Ltd.), Hydran WLS-201, 210, HW-312B latex ( As mentioned above, DIC Corporation), Superflex 150, 170, 470 (above, Daiichi Kogyo Seiyaku Co., Ltd.); Many of them are emulsions containing 30-60% solids.
- polycarbonate urethane resin is preferable.
- polycarbonate urethane resins include Permarin UA-310, 3945; U-coat UX-320, among which U-coat UX-320 is preferred.
- the color ink preferably contains a water-soluble organic solvent.
- the water-soluble organic solvent include C1-C4 monools such as methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, sec-butanol and tert-butanol; ethylene glycol, propylene glycol, 1,3 -C2-C6 alkanediols such as propanediol, 1,2- or 1,4-butanediol, 1,3-pentanediol, 1,5-pentanediol, 1,2-hexanediol, 1,6-hexanediol, etc.
- C3-C6 alkanetriols such as glycerin, hexane-1,2,6-triol, trimethylolpropane; carboxylic acid amides such as N, N-dimethylformamide, N, N-dimethylacetamide; 2-pyrrolidone, N-methyl -2-pyrrolidone, 1,3-dimethylimida Heterocyclic ureas such as lysine-2-one and 1,3-dimethylhexahydropyrimido-2-one; ketones or ketoalcohols such as acetone, methyl ethyl ketone, 2-methyl-2-hydroxypentan-4-one; Linear or cyclic ethers such as 1,2-dimethoxyethane, tetrahydrofuran and dioxane; di- or tri-C2-C3 alkylene glycols or thioglycols such as diethylene glycol, triethylene glycol, dipropylene glycol and thiodig
- the color ink preferably further contains a polyglycerin alkylene oxide adduct, preferably a diglycerin C2-C4 alkylene adduct.
- a polyglycerin alkylene oxide adduct preferably a diglycerin C2-C4 alkylene adduct.
- Examples of commercially available diglycerin C2-C4 alkylene adducts include SC-P400, SC-P750, SC-P1000, SC-P1200, SC-P1600, SC-E450, SC-E750, SC-E1000, SC- E1500, SC-E2000, SC-E3000, SC-E4500 (above, Sakamoto Yakuhin Kogyo Co., Ltd.); Unilube DGP-700, DGP-700F (above, NOF Corporation);
- the content of the polyglycerol alkylene oxide adduct in the total amount of the color ink is usually about 0.5 to 2.5%, preferably about 1 to 2%
- the color ink preferably contains a nonionic surfactant.
- nonionic surfactants include ethers such as polyoxyethylene nonyl phenyl ether, polyoxyethylene octyl phenyl ether, polyoxyethylene dodecyl phenyl ether, polyoxyethylene oleyl ether, polyoxyethylene lauryl ether, and polyoxyethylene alkyl ether.
- Polyesters such as polyoxyethylene oleate, polyoxyethylene distearate, sorbitan laurate, sorbitan monostearate, sorbitan monooleate, sorbitan sesquioleate, polyoxyethylene monooleate, polyoxyethylene stearate System; 2,4,7,9-tetramethyl-5-decyne-4,7-diol, 3,6-dimethyl-4-octyne-3,6-diol, 3, -Acetylene glycol (alcohol) type such as dimethyl-1-hexyn-3-ol; Surfynol 104, 105PG50, 82, 420, 440, 465, 485, DF-110D, Olphine STG (above, Nissin Chemical Industry Co., Ltd.)
- a polyglycol ether type such as TergItol15-S-7 (manufactured by SIGMA-ALDRICH); Of these, acetylene glycol surfact
- acetylene glycol surfactant examples include 2,4,7,9-tetramethyl-5-decyne-4,7-diol, 2,4,7,9-tetramethyl-5-decyne-4,7- Preference is given to surfactants selected from diols, 2,4-dimethyl-5-decyn-4-ol, and 2,4-dimethyl-5-decyn-4-ol or their alkylene oxide adducts.
- alkylene oxide examples include C2-C4 linear, branched, or cyclic alkylene oxide. Of these, linear or branched alkylene oxides are preferred.
- surfactants examples include Olphine series such as Olphine 104 and E1010 (manufactured by Air Products); Surfynol series such as Surfinol 420, 440, 465 and 61 (manufactured by Nissin Chemical Industry Co., Ltd.); It is done.
- the color ink may further contain an ink preparation agent other than those described above, if necessary.
- the ink preparation agent include antifungal agents, preservatives, pH adjusters, chelating reagents, rust inhibitors, water-soluble ultraviolet absorbers, water-soluble polymer compounds, and antioxidants.
- each of the components described above may be used alone or in combination of two or more.
- the content of each component in the total mass of the color ink is, for example, as follows. The remainder other than these is water.
- Water-insoluble colorant Usually 1 to 15%, preferably 1 to 10%, more preferably 1 to 7%.
- Dispersant Usually 0.1 to 15%, preferably 0.1 to 9%, more preferably 0.2 to 6%.
- Urethane resin Usually 1 to 20%, preferably 3 to 15%, more preferably 3 to 12%.
- Water-soluble organic solvent Usually 10 to 45%, preferably 20 to 45%, more preferably 30 to 40%.
- Nonionic surfactant Usually 0.01 to 5%, preferably 0.05 to 3%, more preferably 0.2 to 2.5%.
- Ink preparation Usually 0 to 5%, preferably 0.1 to 2%, more preferably 0.2 to 1%.
- the surface tension of the color ink at 25 ° C. is usually 29 to 35 mN / m, preferably 30 to 34 mN / m.
- the method for preparing the color ink is not particularly limited, and a known method can be employed. As an example, there is a method in which an aqueous dispersion containing a water-insoluble colorant and a dispersant is prepared, and then other components are added and stirred. When the color ink contains a water-soluble dye, it is possible to employ a method in which necessary components are added and stirred without preparing a dispersion. If necessary, the obtained color ink may be subjected to microfiltration by a known method to separate solid impurities. For example, when color ink is ejected by an ink jet printer, it is preferable to perform microfiltration.
- the ink set according to the present embodiment is capable of forming a color image with good solid filling when color ink is adhered on a base formed with white ink, so that the ink set for textile printing is used. As extremely useful.
- the recording method according to the present embodiment using the above-described ink set performs recording by attaching each ink included in the ink set to a recording material.
- a method for attaching each ink to the recording material is not particularly limited, and a brush, a brush, a roll coater, a bar coater, an ink jet printer, or the like can be used depending on the purpose.
- recording is performed by setting a container filled with each ink at a predetermined position of the ink jet printer, and ejecting droplets of each ink according to a recording signal and attaching them to a recording material. be able to.
- the nozzles of the inkjet printer are not particularly limited, and can be appropriately selected according to the purpose.
- the method of the ink jet printer is not particularly limited, and a known method, for example, a charge control method for discharging ink using electrostatic attraction force; a drop-on-demand method (pressure pulse method) using vibration pressure of a piezo element ); An acoustic ink jet method in which an electric signal is converted into an acoustic beam and applied to the ink, and the ink is ejected using the radiation pressure; a thermal ink jet method in which bubbles are formed by heating the ink and the generated pressure is used; Etc. can be appropriately selected.
- the recording material is not particularly limited, but fibers and fabrics that are structures thereof are preferable.
- the type of fiber is not particularly limited. Examples thereof include fibers selected from the group consisting of polyester, cellulose, polyamide, and natural fibers, or blended fibers thereof.
- Examples of the polyester fiber include a fiber mainly composed of polyethylene terephthalate.
- Examples of the cellulose fiber include cotton, cotton, rayon, triacetate fiber, and diacetate fiber.
- Examples of polyamide fibers include nylon fibers.
- Examples of natural fibers include silk and wool.
- the fiber may be provided with an ink receiving layer (bleeding prevention layer).
- a method of providing an ink receiving layer on a fiber is known, and such a fiber can be purchased as a commercial product.
- the ink receiving layer is not particularly limited as long as it has the function.
- Baking (thermosol) treatment can be performed as necessary after each ink is adhered to the fiber.
- Examples of the baking treatment include conditions of usually 130 to 250 ° C., preferably 170 to 210 ° C., usually 10 seconds to 30 minutes, preferably 60 to 180 seconds. This method is also called dry heat fixing.
- a combination of preferable ones is more preferable, and a combination of more preferable ones is more preferable.
- Examples 1 to 5 and Comparative Examples 1 to 7 Preparation of white ink
- the components listed in Table 1 below were sufficiently stirred and mixed to obtain a white ink.
- the obtained white ink was filtered through a mixed cellulose ester filter having a pore diameter of 5 ⁇ m, and then deaerated using a vacuum pump to obtain a white ink for testing W1.
- the numerical values in the following Table 1 mean “parts” and are solid content converted values.
- TiO 2 TF-5760 WHITE (D2B) (Titanium oxide slurry manufactured by Dainichi Seika Kogyo Co., Ltd., solid concentration of titanium oxide: 60%, average particle size: 300 nm)
- UX320 Yukot UX-320 (polycarbonate urethane resin manufactured by Sanyo Chemical Industries, solid content concentration: 40%)
- UA-150 Permarin UA-150 (Polyether urethane resin manufactured by Sanyo Chemical Industries, Ltd., solid content concentration: 30%)
- UWS-145 U-coat UWS-145 (polyester urethane resin manufactured by Sanyo Chemical Industries, solid content concentration: 36%)
- UX-390 U-coat UX-390 (polycarbonate urethane resin manufactured by Sanyo Chemical Industries, Ltd., solid content concentration: 38%)
- UA-368 Permarine UA-368 (polycarbonate urethane resin manufactured by Sanyo Chemical Industries, Ltd., solid content concentration: 38%)
- UA-368
- the whiteness was evaluated by measuring the L * value of the fiber for evaluation.
- An eXact manufactured by X-Rite was used as a colorimeter, and the L * value in the CIE / L * a * b * color system was measured.
- the colorimetric conditions at this time were D65 for the observation light source, 2 ° for the observation field, and Status T for the density. Color measurement was performed five times on each evaluation fiber, and the average value was taken as the measurement result. A larger L * value is preferable because it shows higher whiteness.
- Preparation Examples 1 and 2 Preparation of white ink
- the components listed in Table 3 below were sufficiently stirred and mixed to obtain a white ink.
- the obtained white ink was filtered through a mixed cellulose ester filter having a pore size of 5 ⁇ m, and then subjected to deaeration treatment using a vacuum pump to obtain white inks W1 and W2 for testing.
- the numerical values in the following Table 3 mean “parts” and are solid content converted values.
- TiO 2 TF-5760 WHITE (D2B) (Titanium oxide slurry manufactured by Dainichi Seika Kogyo Co., Ltd., solid concentration of titanium oxide: 60%, average particle size: 300 nm)
- UX320 Yukot UX-320 (polycarbonate urethane resin manufactured by Sanyo Chemical Industries, solid content concentration: 40%)
- R967 NeoRez R-967 (polyether urethane resin manufactured by Enomoto Kasei Co., Ltd., solid content concentration: 40%)
- GXL (S) PROXEL GXL (S)
- This separation was performed in a two-ply manner so that the glass filter paper GA100 manufactured by Advantech was on top and GC50 was on the bottom. A portion of 2-butanone and water in the obtained filtrate was distilled off under reduced pressure using an evaporator to obtain a dispersion having a colorant content of 12%. This dispersion is designated as “DP1”.
- Preparation Examples 4 to 6 Preparation of dispersion containing colorant] DP2 to DP4, which are dispersions of Preparation Examples 4 to 6, were obtained in the same manner as Preparation Example 3, except that the components and amounts used in Preparation Example 3 were changed to those shown in Table 4 below. In addition, the numerical value of each component is “parts”, and the amount of water added was adjusted so that the total content of the colorant in each dispersion was 12%.
- a roller is applied to a 100% cotton T-shirt (Printstar heavy weight, black fabric manufactured by Thoms Co., Ltd.) so that the amount of the pretreatment liquid obtained becomes a coating amount of 0.025 g / cm 2 per unit area. It was applied in A4 size.
- the T-shirt with the pretreated liquid adhered thereto was subjected to a heat treatment at 150 ° C. for 30 seconds with a heat press machine to obtain a pretreated fiber.
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Abstract
Description
1)
白顔料、ポリカーボネートウレタン樹脂、ポリエーテルウレタン樹脂、及び水を含有する白インク。
2)
水溶性有機溶剤をさらに含有する前記1)に記載の白インク。
3)
界面活性剤をさらに含有する前記1)又は2)に記載の白インク。
4)
前記界面活性剤が、アセチレングリコール及びポリアルキレングリコールから選択される少なくとも1種の界面活性剤である前記3)に記載の白インク。
5)
前記ポリカーボネートウレタン樹脂及び前記ポリエーテルウレタン樹脂の合計の含有率が10~20質量%である前記1)~4)のいずれ1項に記載の白インク。
6)
前記1)~5)のいずれか1項に記載の白インクと、1種類以上のカラーインクとを備え、
前記カラーインクが白顔料以外の着色剤を含有する水性インクであり、
前記白インクと前記カラーインクとの25℃における表面張力の差が±0~3mN/mであるインクセット。
前記1)~5)のいずれか1項に記載の白インクを被記録材へ付着させることにより記録を行う記録方法。
8)
前記白インクをインクジェットプリンタにより吐出させて前記被記録材へ付着させることにより記録を行う前記7)に記載の記録方法。
9)
前記6)に記載のインクセットが備える各インクを被記録材へ付着させることにより記録を行う記録方法。
10)
前記インクセットが備える各インクをインクジェットプリンタにより吐出させて前記被記録材へ付着させることにより記録を行う前記9)に記載の記録方法。
11)
前記被記録材が、ポリエステル繊維、セルロース繊維、ポリアミド繊維、及び天然繊維からなる群より選択される繊維、これらの繊維を含む混紡繊維、又はこれらの繊維を含む布帛である前記7)~10)のいずれか1項に記載の記録方法。
12)
前記1)~5)のいずれか1項に記載の白インクが付着した繊維。
13)
前記6)に記載のインクセットが備える白インクと1種類以上のカラーインクとの両方が付着した繊維。
本実施形態に係る白インクは、白顔料、ポリカーボネートウレタン樹脂、ポリエーテルウレタン樹脂、及び水を含有する。
白顔料としては特に限定されず、例えば、酸化チタン、酸化亜鉛、硫化亜鉛、酸化アンチモン、酸化ジルコニウム等の白色無機顔料;白色の中空樹脂粒子、高分子粒子等の白色有機顔料;などが挙げられる。具体例としては、C.I.ピグメントホワイト1(塩基性炭酸鉛)、C.I.ピグメントホワイト4(酸化亜鉛)、C.I.ピグメントホワイト5(硫化亜鉛と硫酸バリウムとの混合物)、C.I.ピグメントホワイト6(酸化チタン)、C.I.ピグメントホワイト6:1(他の金属酸化物を含有する酸化チタン)、C.I.ピグメントホワイト7(硫化亜鉛)、C.I.ピグメントホワイト18(炭酸カルシウム)、C.I.ピグメントホワイト19(クレー)、C.I.ピグメントホワイト20(雲母チタン)、C.I.ピグメントホワイト21(硫酸バリウム)、C.I.ピグメントホワイト22(天然硫酸バリウム)、C.I.ピグメントホワイト23(グロスホワイト)、C.I.ピグメントホワイト24(アルミナホワイト)、C.I.ピグメントホワイト25(石膏)、C.I.ピグメントホワイト26(酸化マグネシウム・酸化ケイ素)、C.I.ピグメントホワイト27(シリカ)、C.I.ピグメントホワイト28(無水ケイ酸カルシウム)等が挙げられる。
ポリカーボネートウレタン樹脂としては、ポリオール又はポリカーボネートポリオールとポリイソシアネートとを反応させて得られる樹脂が挙げられる。これらの中では、ポリオールとポリイソシアネートとを反応させて得られる樹脂が好ましい。
ポリエーテルウレタン樹脂としては、分子内にヒドロキシ基を2つ有するポリエーテルとポリイソシアネートとを反応させて得られる樹脂が挙げられる。これらのうち、ポリイソシアネートとしては、ポリカーボネートポリウレタン樹脂の項で記載したポリイソシアネートと、好ましいもの等を含めて同じものが挙げられる。
水としては、金属イオン、無機塩等の不純物が少ない水を使用するのが好ましい。そのような水としては、イオン交換水、蒸留水等が挙げられる。
本実施形態に係る白インクは、水溶性有機溶剤をさらに含有することが好ましい。水溶性有機溶剤としては特に限定されず、多価アルコール類、ピロリドン類等が挙げられる。
本実施形態に係る白インクは、界面活性剤をさらに含有することが好ましい。界面活性剤を含有することにより、白インクの粘度の増加、成分の凝集等が抑制され、保存安定性が良好となる。界面活性剤の種類は特に限定されないが、例えば、アセチレングリコール及びポリアルキレングリコールから選択される少なくとも1種の界面活性剤が好ましい。これらのうち、ポリアルキレングリコールを使用すると、白色度と裏抜けが良好になる傾向がある。
本実施形態に係る白インクは、必要に応じて、上記以外のインク調製剤をさらに含有していてもよい。インク調製剤としては、防黴剤、防腐剤、pH調整剤、キレート試薬、防錆剤、水溶性紫外線吸収剤、水溶性高分子化合物、酸化防止剤等が挙げられる。
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。
アルカリ金属の水酸化物としては、水酸化リチウム、水酸化ナトリウム、水酸化カリウム等が挙げられる。アルカリ土類金属の水酸化物としては、水酸化ベリリウム、水酸化マグネシウム、水酸化カルシウム、水酸化ストロンチウム等が挙げられる。これらの中では、アルカリ金属の水酸化物が好ましく、水酸化リチウム及び水酸化ナトリウムがより好ましい。
脂肪族アミン化合物としては、アンモニア、モノメチルアミン、ジメチルアミン、トリメチルアミン、モノエチルアミン、ジメチルアミン、トリメチルアミン等が挙げられ、好ましくはアンモニア又はトリエチルアミンである。
アルコールアミン化合物としては、モノエタノールアミン、ジエタノールアミン、トリエタノールアミン、モノプロパノールアミン、ジプロパノールアミン、トリプロパノールアミン、メチルエタノールアミン、ジメチルエタノールアミン、N-メチルジエタノールアミン等が挙げられ、好ましくは3級アミン類であり、より好ましくはトリエタノールアミンである。
他の具体例としては、炭酸リチウム、炭酸ナトリウム、炭酸水素ナトリウム、炭酸カリウム等のアルカリ金属の炭酸塩;ケイ酸ナトリウム、酢酸カリウム等の有機酸のアルカリ金属塩;リン酸二ナトリウム等のリン酸塩;などが挙げられる。
上述した各成分は、いずれも1種類を単独で使用してもよく、2種類以上を併用してもよい。本実施形態に係る白インクの総質量中における各成分の含有率(2種類以上の化合物を含有するときはその合計)は、例えば、以下のとおりである。なお、これら以外の残部は水である。
白顔料:
通常1~30%、好ましくは5~20%、より好ましくは5~15%。
ポリカーボネートウレタン樹脂:
通常1~30%、好ましくは5~20%、より好ましくは5~15%。
ポリエーテルウレタン樹脂:
通常1~30%、好ましくは1~20%、より好ましくは1~15%。
水溶性有機溶剤:
通常0~50%、好ましくは15~35%、より好ましくは20~30%。
界面活性剤:
通常0~5%、好ましくは0.2~2%、より好ましくは0.5~1%。
インク調製剤:
通常0~5%、好ましくは0.2~2%、より好ましくは0.5~1%。
本実施形態に係る白インクの調製方法は特に限定されず、公知の調製方法を採用することができる。その一例としては、各成分を加えて撹拌することにより白インクを調製する方法が挙げられる。また、自己分散性を有さない白顔料を使用する場合には、最初に白顔料、分散剤、及び水を混合して分散液を調製した後、残りの各成分を加えて撹拌する方法を採用することができる。
得られた白インクは、必要に応じて公知の方法で精密濾過を行い、固体の不純物を濾別してもよい。例えば、本実施形態に係る白インクをインクジェットプリンタで吐出するときは、精密濾過を行うのが好ましい。
上述した白インクを用いた本実施形態に係る記録方法は、上述した白インクを被記録材へ付着させることにより記録を行うものである。白インクを被記録材へ付着させる方法は特に限定されず、目的に応じて筆、刷毛、ロールコーター、バーコーター、インクジェットプリンタ等を使用することができる。インクジェットプリンタを使用する場合、白インクをインクジェットプリンタにより吐出させて被記録材へ付着させることにより記録を行うことができる。
本実施形態に係るインクセットは、白インクと、1種類以上のカラーインクとを備え、カラーインクが白顔料以外の着色剤を含有する水性インクであり、白インクとカラーインクとの25℃における表面張力の差が±0~3mN/mである。表面張力の差は、±0~2.5mN/mであることが好ましく、±0~2mN/mであることがより好ましい。通常、白インクの表面張力は、カラーインクの表面張力と同等であるか、又はカラーインクの表面張力よりも大きい。
本実施形態に係るインクセットが備える白インクについては上述したとおりであるため、詳細な説明を省略する。
カラーインクは、白顔料以外の着色剤を含有する水性インクであれば特に限定されない。着色剤としては、公知の染料及び顔料が挙げられる。それらの中では、C.I.番号が付与された着色剤が好ましく、水不溶性の着色剤がより好ましい。水としては、金属イオン、無機塩等の不純物が少ない水を使用するのが好ましい。そのような水としては、イオン交換水、蒸留水等が挙げられる。
本明細書において水不溶性の着色剤とは、25℃の水に対する溶解度が通常3g/L以下、好ましくは1g/L以下、より好ましくは500mg/L以下、さらに好ましくは100mg/L以下の着色剤を意味する。そのような着色剤としては、C.I.Disperse、C.I.Solvent、及び顔料から選択される着色剤が挙げられる。これらの中では顔料が好ましい。顔料としては、無機顔料、有機顔料、体質顔料等が挙げられる。
カラーインクが水不溶性の着色剤を含有する場合、分散剤をさらに含有することが好ましい。
R1におけるアリール基としては、フェニル基、ナフチル基等が挙げられ、好ましくはフェニル基である。
R1における置換アリール基としては、置換基を有しているフェニル基、置換基を有しているナフチル基等が挙げられる。該置換基としては、ハロゲン原子、水酸基、アルコキシ基、アミノ基、ニトロ基、シアノ基、-CORa(RaはC1-C8アルキル基、アリール基、C1-C8アルコキシ基、又はアリーロキシ基を示す。)で表されるカルボニル含有基、スルホニル基、トリフルオロメチル基等が挙げられる。これらの中ではトリフルオロメチル基が好ましい。これらの置換基の数は通常1つ又は2つである。アリール基がフェニル基である場合、パラ位又はオルト位に置換基を有していることが好ましい。
R1における芳香族ヘテロ環基としては、ピリジル基、ピロール基、フリル基、チエニル基等が挙げられる。
R4におけるアシル基としては、ホルミル基、アセチル基、ベンゾイル基等が挙げられる。
R4におけるアミド基としては、アセトアミド基、マロンアミド基、スクシンアミド基、マレアミド基、ベンズアミド基、2-フルアミド基等のカルボン酸アミド基;チオアセトアミド基、ヘキサンジチオアミド基、チオベンズアミド基、メタンチオスルホンアミド基等のチオアミド基;セレノアセトアミド基、ヘキサンジセレノアミド基、セレノベンズアミド基、メタンセレノスルホンアミド等のセレノアミド基;N-メチルアセトアミド基、ベンズアニリド基、シクロヘキサンカルボキサニリド基、2,4’-ジクロロアセトアニリド基等のN-置換アミド基;などが挙げられる。
R4におけるオキシカルボニル基としては、-COORb(Rbは水素原子、C1-C8アルキル基、又はアリール基を示す。)で表される基を挙げることができる。具体例としては、カルボキシ基、メトキシカルボニル基、エトキシカルボニル基、プロポキシカルボニル基、n-ブトキシカルボニル基、sec-ブトキシカルボニル基、tert-ブトキシカルボニル基、n-ペントキシカルボニル基、フェノキシカルボニル基等が挙げられる。これらの中で好ましくは、メトキシカルボニル基及びエトキシカルボニル基である。
また、分散液の調製において発泡が激しいときは、シリコーン系、アセチレングリコール系等の消泡剤を極微量添加することができる。但し、着色剤の分散や微粒子化を阻害する消泡剤もあることから、消泡剤の種類は適宜選択して使用するのが好ましい。
カラーインクが水不溶性の着色剤を含有する場合、ウレタン樹脂をさらに含有することが好ましい。
カラーインクは、水溶性有機溶剤を含有することが好ましい。水溶性有機溶剤としては、例えば、メタノール、エタノール、n-プロパノール、イソプロパノール、n-ブタノール、イソブタノール、第二ブタノール、第三ブタノール等のC1-C4モノオール;エチレングリコール、プロピレングリコール、1,3-プロパンジオール、1,2-又は1,4-ブタンジオール、1,3-ペンタンジオール、1,5-ペンタンジオール、1,2-ヘキサンジオール、1,6-ヘキサンジオール等のC2-C6アルカンジオール;グリセリン、ヘキサン-1,2,6-トリオール、トリメチロールプロパン等のC3-C6アルカントリオール;N,N-ジメチルホルムアミド、N,N-ジメチルアセトアミド等のカルボン酸アミド;2-ピロリドン、N-メチル-2-ピロリドン、1,3-ジメチルイミダゾリジン-2-オン、1,3-ジメチルヘキサヒドロピリミド-2-オン等の複素環式尿素類;アセトン、メチルエチルケトン、2-メチル-2-ヒドロキシペンタン-4-オン等のケトン又はケトアルコール;1,2-ジメトキシエタン、テトラヒドロフラン、ジオキサン等の直鎖状又は環状エーテル;ジエチレングリコール、トリエチレングリコール、ジプロピレングリコール、チオジグリコール等のジ若しくはトリC2-C3アルキレングリコール又はチオグリコール;テトラエチレングリコール、ポリエチレングリコール(好ましくは分子量400、800、1540等の分子量が2000以下のもの)、ポリプロピレングリコール等の繰り返し単位が4以上で分子量が約20000以下程度のポリC2-C3アルキレングリコール(好ましくは液状のもの);ジグリセリン、トリグリセリン、ポリグリセリン等のポリグリセリルエーテル;ポリグリセリン酸化アルキレン付加物;ポリオキシエチレンポリグリセリルエーテル、ポリオキシプロピレンポリグリセリルエーテル等のポリオキシC2-C3アルキレンポリグリセリルエーテル;エチレングリコールモノメチルエーテル、エチレングリコールモノエチルエーテル、ジエチレングリコールモノメチルエーテル、ジエチレングリコールモノエチルエーテル、ジエチレングリコールモノブチルエーテル(ブチルカルビトール)、トリエチレングリコールモノメチルエーテル、トリエチレングリコールモノエチルエーテル、トリエチレングリコールモノブチルエーテル等の多価アルコールのC1-C4アルキルエーテル;γ-ブチロラクトン、エチレンカーボネート等の環状エステル又はカーボネート;ジメチルスルホキシド;酢酸;などが挙げられる。
カラーインクの総量中におけるポリグリセリン酸化アルキレン付加物の含有率は、通常0.5~2.5%程度であり、好ましくは1~2%程度である。
カラーインクは、ノニオン界面活性剤を含有することが好ましい。ノニオン界面活性剤としては、例えば、ポリオキシエチレンノニルフェニルエーテル、ポリオキシエチレンオクチルフェニルエーテル、ポリオキシエチレンドデシルフェニルエーテル、ポリオキシエチレンオレイルエーテル、ポリオキシエチレンラウリルエーテル、ポリオキシエチレンアルキルエーテル等のエーテル系;ポリオキシエチレンオレイン酸エステル、ポリオキシエチレンジステアリン酸エステル、ソルビタンラウレート、ソルビタンモノステアレート、ソルビタンモノオレエート、ソルビタンセスキオレエート、ポリオキシエチレンモノオレエート、ポリオキシエチレンステアレート等のエステル系;2,4,7,9-テトラメチル-5-デシン-4,7-ジオール、3,6-ジメチル-4-オクチン-3,6-ジオール、3,5-ジメチル-1-ヘキシン-3-オール等のアセチレングリコール(アルコール)系;サーフィノール 104、105PG50、82、420、440、465、485、DF-110D、オルフィンSTG(以上、日信化学工業株式会社製);TergItol15-S-7(SIGMA-ALDRICH社製)等のポリグリコールエーテル系;などが挙げられる。これらの中ではアセチレングリコール界面活性剤が好ましい。
カラーインクは、必要に応じて、上記以外のインク調製剤をさらに含有していてもよい。インク調製剤としては、防黴剤、防腐剤、pH調整剤、キレート試薬、防錆剤、水溶性紫外線吸収剤、水溶性高分子化合物、酸化防止剤等が挙げられる。
上述した各成分は、いずれも1種類を単独で使用してもよく、2種類以上を併用してもよい。カラーインクの総質量中における各成分の含有率(2種類以上の化合物を含有するときはその合計)は、例えば、以下のとおりである。なお、これら以外の残部は水である。
水不溶性の着色剤:
通常1~15%、好ましくは1~10%、より好ましくは1~7%。
分散剤:
通常0.1~15%、好ましくは0.1~9%、より好ましくは0.2~6%。
ウレタン樹脂:
通常1~20%、好ましくは3~15%、より好ましくは3~12%。
水溶性有機溶剤:
通常10~45%、好ましくは20~45%、より好ましくは30~40%。
ノニオン界面活性剤:
通常0.01~5%、好ましくは0.05~3%、より好ましくは0.2~2.5%。
インク調製剤:
通常0~5%、好ましくは0.1~2%、より好ましくは0.2~1%。
カラーインクの25℃における表面張力は、通常29~35mN/mであり、好ましくは30~34mN/mである。
カラーインクの調製方法は特に限定されず、公知の方法を採用することができる。その一例としては、水不溶性の着色剤及び分散剤を含有する水性の分散液を調製した後、他の成分を加えて撹拌する方法が挙げられる。カラーインクが水溶性の染料を含有する場合には、分散液を調製することなく、必要な成分を加えて撹拌する方法を採用することができる。
得られたカラーインクは、必要に応じて公知の方法で精密濾過を行い、固体の不純物を濾別してもよい。例えば、カラーインクをインクジェットプリンタで吐出するときは、精密濾過を行うのが好ましい。
上述したインクセットを用いた本実施形態に係る記録方法は、インクセットが備える各インクを被記録材へ付着させることにより記録を行うものである。各インクを被記録材へ付着させる方法は特に限定されず、目的に応じて筆、刷毛、ロールコーター、バーコーター、インクジェットプリンタ等を使用することができる。
実施例中の合成反応、晶析等の各操作は、特に断りの無い限り、いずれも撹拌下で行った。また、反応等の温度は、反応液等の内部温度を記載した。
また、実施例中で使用した「水」は、特に断りの無い限り、「イオン交換水」である。
また、液の固形分含有量を測定するときは、株式会社エイ・アンド・デイ社製のMS-70を用い、乾燥重量法により求めた。着色剤の含有量は、分散液が含有する固形分の総含有量から換算した、着色剤のみの含有量である。
下記表1に記載の成分を十分に撹拌して混合し、白インクを得た。得られた白インクを孔径5μmのミックスセルロースエステルのフィルターで濾過した後、真空ポンプを用いて脱気処理することにより、試験用の白インクW1を得た。
下記表1中の数値は「部」を意味し、固形分換算値である。
TiO2=TF-5760 WHITE(D2B)(大日精化工業株式会社製の酸化チタンスラリー、酸化チタン固形分濃度:60%、平均粒子径:300nm)
UX320=ユーコート UX-320(三洋化成工業株式会社製のポリカーボネートウレタン樹脂、固形分濃度:40%)
UA-150=パーマリン UA-150(三洋化成工業株式会社製のポリエーテルウレタン樹脂、固形分濃度:30%)
UWS-145=ユーコート UWS-145(三洋化成工業株式会社製のポリエステルウレタン樹脂、固形分濃度:36%)
UX-390=ユーコート UX-390(三洋化成工業株式会社製のポリカーボネートウレタン樹脂、固形分濃度:38%)
UA-368=パーマリン UA-368(三洋化成工業株式会社製のポリカーボネートウレタン樹脂、固形分濃度:50%)
WLS-201=ハイドラン WLS-201(DIC株式会社製のポリカーボネートウレタン樹脂、固形分濃度:35%)
R967=NeoRez R-967(楠本化成工業株式会社製のポリエーテルウレタン樹脂、固形分濃度:40%)
GL=グリセリン
PG=プロピレングリコール
SF104=サーフィノール 104PG50
LA-10=ハイテノール LA10
DYNOL=ダイノール 604
TEA=トリエタノールアミン
GXL(S)=PROXEL GXL(S)
センカ株式会社製のユニセンス KHE100L(固形分濃度:60%、15部)、日本合成化学株式会社製のモビニール 6960(固形分濃度:45%、1.5部)、及び第一工業製薬株式会社製のエパン U-103(0.15部)に水を加えて総量を100部とし、混合することにより、繊維の前処理液を得た。
得られた前処理液の付着量が、単位面積あたりの塗布量0.025g/cm2となるように、綿100%のTシャツ(トムス株式会社製Printstarヘビーウェイト、黒色生地)に対してローラーによりA4サイズで塗布した。得られた前処理液の付着したTシャツに対して、ヒートプレス機で150℃、30秒間の加熱処理を行い、前処理された繊維を得た。
上記のようにして得た前処理された繊維の、前処理された部分に対して、実施例1~5及び比較例1~7の各インクを、産業用インクジェット評価装置(拡張型塗布装置EV2500:リコー株式会社製)により吐出させて、白色のベタパターン画像をインクジェット記録した。このときのヘッド温度は25℃、解像度1200×2400dpiで2回重ねて記録した。得られた白インクが付着した繊維に対して、熱風乾燥機で150℃、4分間の加熱処理を行い、評価用の各繊維を得た。
各試験の評価結果は、下記表2中に示した。
白色度の評価は、評価用の繊維のL*値を測色することにより行った。測色機としてはX-Rite社製のeXactを用いて、CIE/L*a*b*表色系における、L*値を測色した。このときの測色条件は、観測光源がD65、観測視野が2°、濃度がStatus Tであった。各評価用の繊維に対して5回測色を行い、その平均値を測定結果とした。L*値は大きい程、高い白色度を示すため好ましい。
評価用の繊維を、繊維が破れない程度に両手で限界まで延伸し、3秒間保持した後、延伸を止めた。その繊維の白色のベタパターン画像のヒビ割れを目視で観察し、その状態を下記3段階の評価基準で評価した。
-評価基準-
A:画像には延伸によるヒビ割れが認められなかった。
B:画像は延伸により僅かにヒビ割れし、生地の色である黒色が僅かに観察された。
C:画像は延伸によりヒビ割れし、生地の色である黒色が明確に観察された。
評価用の繊維の白色のベタパターン画像を目視で観察し、画像ムラを下記3段階の評価基準で評価した。
-評価基準-
A:画像にはムラが認められなかった。
B:画像には僅かにムラが認められ、白色ではあるが濃淡が生じている部分があった。
C:画像にはムラが認められ、白インクが過剰に付着してしまった部分や、白インクが付着せず、生地の色である黒色が明確に観察される部分があった。
下記表3に記載の成分を十分に撹拌して混合し、白インクを得た。得られた白インクを孔径5μmのミックスセルロースエステルのフィルターで濾過した後、真空ポンプを用いて脱気処理することにより、試験用の白インクW1、W2を得た。
下記表3中の数値は「部」を意味し、固形分換算値である。
TiO2=TF-5760 WHITE(D2B)(大日精化工業株式会社製の酸化チタンスラリー、酸化チタン固形分濃度:60%、平均粒子径:300nm)
UX320=ユーコート UX-320(三洋化成工業株式会社製のポリカーボネートウレタン樹脂、固形分濃度:40%)
R967=NeoRez R-967(楠本化成工業株式会社製のポリエーテルウレタン樹脂、固形分濃度:40%)
GL=グリセリン
PG=プロピレングリコール
604=ダイノール 604
TEA=トリエタノールアミン
GXL(S)=PROXEL GXL(S)
国際公開2013/115071号の「[合成例3]ブロック共重合体Aの合成」に従い、質量平均分子量が24300、PDIが1.49の分散剤138gを得た。得られた分散剤は、Bブロックを構成するモノマーがベンジルメタクリレートであり、Aブロックを構成するモノマーが、上記式(3)で表されるモノマーのうち、R5が水素原子、R6がメチル基であるモノマーと、R5がn-ブチル基、R6がメチル基であるモノマーとの2種類である。
合成例1で得た分散剤(6.3部)を、2-ブタノン(20部)に溶解して溶液を得た。この溶液に、0.47部の水酸化ナトリウムを水(51.45部)に溶解させた液を加え、1時間撹拌することにより乳化液を得た。得られた液にC.I.ピグメントイエロー 155(21部)を加え、水冷下、サンドグラインダーで1500rpmの条件で15時間分散処理をして液を得た。得られた液をイオン交換水で希釈し、分散用ビーズを濾別して濾液を得た。この濾別は、アドバンテック社製ガラス濾紙のGA100が上、GC50が下となるように2枚重ねとして行った。得られた濾液中の2-ブタノン及び水の一部を、エバポレータで減圧留去することにより、着色剤の含有量が12%の分散液を得た。この分散液を「DP1」とする。
調製例3で使用した各成分を、下記表4に記載の成分及び使用量に代える以外は調製例3と同様にして、調製例4~6の分散液であるDP2~DP4をそれぞれ得た。なお、各成分の数値は「部」であり、各分散液中の着色剤の総含有量が12%となるように、加える水の量を調整した。
PY155=C.I.ピグメントイエロー 155
PR122=C.I.ピグメントレッド 122
PB15:4=C.I.ピグメントブルー 15:4
CB=カーボンブラック
DpA=合成例1で合成した分散剤
MEK=2-ブタノン
NaOH=水酸化ナトリウム
下記表5に記載の各成分を混合し、十分に撹拌した後、孔径3μmのメンブランフィルタで濾過することにより、評価試験に用いるY1、M1、C1、K1のインクを得た。なお、各成分の数値は「部」であり、その合計が100部となるように、加える水の量を調整した。
UX320=ユーコート UX-320(三洋化成工業株式会社製のポリカーボネートウレタン樹脂、固形分濃度:40%)
PG=プロピレングリコール
GL=グリセリン
DGA=SC-P1000
TEA=トリエタノールアミン
SF420=サーフィノール 420
SF104=サーフィノール 104PG50
GXL(S)=PROXEL GXL(S)
センカ株式会社製のユニセンス KHE100L(ジメチルアミン・アンモニア・エピクロルヒドリン重縮合物、固形分濃度:60%、7.5部)、日本合成化学株式会社製のモビニール 6960(スチレン/アクリル系樹脂エマルジョン、固形分濃度:45%、Tg=-23℃、0.75部)、及び第一工業製薬株式会社製のエパン U-103(0.075部)に水を加えて総量を100部とし、混合することにより、繊維の前処理液を得た。
得られた前処理液の付着量が、単位面積あたりの塗布量0.025g/cm2となるように、綿100%のTシャツ(トムス株式会社製Printstarヘビーウェイト、黒色生地)に対してローラーによりA4サイズで塗布した。得られた前処理液の付着したTシャツに対して、ヒートプレス機で150℃、30秒間の加熱処理を行い、前処理された繊維を得た。
上記のようにして得た前処理された繊維の、前処理された部分に対して、ガーメントプリンター(武藤工業株式会社製:VJ-405GT)を用い、白インクを600×1200dpiの印刷設定モードで吐出して、白インクが付着した繊維を得た。白インクの後にカラーインクをガーメントプリンター(武藤工業株式会社製:VJ-405GT)を用い、600×1200dpiの印刷設定モードで吐出して、カラーインクが付着した繊維を得た。得られた繊維に対して熱風乾燥機で150℃、4分間の加熱処理を行い、評価用の各繊維を得た。
上記のようにして得た評価試験用の繊維に対して測色が必要なときは、X-Rite社製の分光濃度・測色計、X-Rite eXactを用い、観測光源がD65、観測視野が2°、濃度がANSI Tの条件で測色した。また、測色はCIE/L*a*b*表色系で行った。
評価試験用の繊維について、各カラー画像のベタ埋まりの程度を目視で確認し、下記3段階の基準で評価した。評価結果を下記表6及び表7に示す。
-評価基準-
A:白い筋は確認できず、ベタ埋まりは良好であった。
B:白い筋が確認できる部分はあるが、ベタ埋まりは比較的に良好であった。
C:白い筋が明確に確認できる部分があり、ベタ埋まりは良好ではない。
D:白い筋が多数確認され、ベタ埋まりしていなかった。
インクの表面張力は、協和界面科学株式会社製のCBVP-Z型表面張力計を使用し、室温25℃の環境下、プレート法で測定した。測定結果を下記表6及び表7に示す。各表中の表面張力の単位は「mN/m」である。
Claims (13)
- 白顔料、ポリカーボネートウレタン樹脂、ポリエーテルウレタン樹脂、及び水を含有する白インク。
- 水溶性有機溶剤をさらに含有する請求項1に記載の白インク。
- 界面活性剤をさらに含有する請求項1又は2に記載の白インク。
- 前記界面活性剤が、アセチレングリコール及びポリアルキレングリコールから選択される少なくとも1種の界面活性剤である請求項3に記載の白インク。
- 前記ポリカーボネートウレタン樹脂及び前記ポリエーテルウレタン樹脂の合計の含有率が10~20質量%である請求項1~4のいずれか1項に記載の白インク。
- 請求項1~5のいずれか1項に記載の白インクと、1種類以上のカラーインクとを備え、
前記カラーインクが白顔料以外の着色剤を含有する水性インクであり、
前記白インクと前記カラーインクとの25℃における表面張力の差が±0~3mN/mであるインクセット。 - 請求項1~5のいずれか1項に記載の白インクを被記録材へ付着させることにより記録を行う記録方法。
- 前記白インクをインクジェットプリンタにより吐出させて前記被記録材へ付着させることにより記録を行う請求項7に記載の記録方法。
- 請求項6に記載のインクセットが備える各インクを被記録材へ付着させることにより記録を行う記録方法。
- 前記インクセットが備える各インクをインクジェットプリンタにより吐出させて前記被記録材へ付着させることにより記録を行う請求項9に記載の記録方法。
- 前記被記録材が、ポリエステル繊維、セルロース繊維、ポリアミド繊維、及び天然繊維からなる群より選択される繊維、これらの繊維を含む混紡繊維、又はこれらの繊維を含む布帛である請求項7~10のいずれか1項に記載の記録方法。
- 請求項1~5のいずれか1項に記載の白インクが付着した繊維。
- 請求項6に記載のインクセットが備える白インクと1種類以上のカラーインクとの両方が付着した繊維。
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JP7395909B2 (ja) | 2019-09-26 | 2023-12-12 | Dic株式会社 | インク及び印刷物の製造方法 |
JP7577741B2 (ja) | 2020-05-11 | 2024-11-05 | 富士フイルム株式会社 | インクセット及び画像記録方法 |
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US20210363367A1 (en) | 2021-11-25 |
KR20200135977A (ko) | 2020-12-04 |
US11401430B2 (en) | 2022-08-02 |
CN111886301B (zh) | 2023-01-06 |
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