WO2022186395A1 - インクジェット捺染用前処理液、インクセット及び捺染方法 - Google Patents
インクジェット捺染用前処理液、インクセット及び捺染方法 Download PDFInfo
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- WO2022186395A1 WO2022186395A1 PCT/JP2022/009566 JP2022009566W WO2022186395A1 WO 2022186395 A1 WO2022186395 A1 WO 2022186395A1 JP 2022009566 W JP2022009566 W JP 2022009566W WO 2022186395 A1 WO2022186395 A1 WO 2022186395A1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/54—Inks based on two liquids, one liquid being the ink, the other liquid being a reaction solution, a fixer or a treatment solution for the ink
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- 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
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4078—Printing on textile
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- 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
- B41M5/0011—Pre-treatment or treatment during printing of the recording material, e.g. heating, irradiating
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- 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
- B41M5/0011—Pre-treatment or treatment during printing of the recording material, e.g. heating, irradiating
- B41M5/0017—Application of ink-fixing material, e.g. mordant, precipitating agent, on the substrate prior to printing, e.g. by ink-jet printing, coating or spraying
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- 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
- B41M5/0041—Digital printing on surfaces other than ordinary paper
- B41M5/0047—Digital printing on surfaces other than ordinary paper by ink-jet printing
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
-
- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/40—Ink-sets specially adapted for multi-colour inkjet printing
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- 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
- D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- 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
- D06P1/5207—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- D06P1/5214—Polymers of unsaturated compounds containing no COOH groups or functional derivatives thereof
- D06P1/5221—Polymers of unsaturated hydrocarbons, e.g. polystyrene polyalkylene
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- 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
- D06P1/5207—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- D06P1/525—Polymers of unsaturated carboxylic acids or functional derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- 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
- D06P1/5278—Polyamides; Polyimides; Polylactames; Polyalkyleneimines
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- 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
- D06P1/54—Substances with reactive groups together with crosslinking agents
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/002—Locally enhancing dye affinity of a textile material by chemical means
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
- D06P5/2044—Textile treatments at a pression higher than 1 atm
- D06P5/205—Textile treatments at a pression higher than 1 atm before dyeing
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/30—Ink jet printing
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- 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
- B41M5/0041—Digital printing on surfaces other than ordinary paper
- B41M5/0064—Digital printing on surfaces other than ordinary paper on plastics, horn, rubber, or other organic polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/34—Material containing ester groups
- D06P3/52—Polyesters
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
Definitions
- the present invention relates to a pretreatment liquid for inkjet textile printing, an ink set for inkjet textile printing comprising the pretreatment liquid, and an inkjet textile printing method using the pretreatment liquid.
- Patent Document 1 when the items disclosed in Patent Document 1 are applied to garment prints such as pre-dyed cotton T-shirts, there arises a problem that the color development of the printed fabric is extremely low due to insufficient aggregating action of the pretreatment liquid. At the same time, since it contains a large amount of resin emulsion for improving fastness, there is a problem that the color difference between the part where the treatment liquid is applied to the colored fabric after pretreatment and the part where the treatment liquid is not applied is very large and conspicuous ( hereinafter referred to as “treatment marks”).
- one of the objects of the present invention is to provide a pretreatment liquid for ink-jet textile printing that is excellent in at least the color development and water resistance of printed textiles and that leaves little trace of treatment.
- Another object of the present invention is to provide an ink set for inkjet textile printing comprising the pretreatment liquid for inkjet textile printing, and an inkjet textile printing method using the pretreatment liquid for inkjet textile printing.
- the present invention relates to the following 1) to 13).
- the (meth)acrylic acid-based vinyl copolymer (B) contains a copolymer containing an alkyl (meth)acrylate (b1), a monomer having a carboxy group (b2), and a styrene derivative (b3) as monomer components. , 1) to 4), the pretreatment liquid for inkjet textile printing. 6) The pretreatment liquid for inkjet textile printing according to any one of 1) to 5), which has a dynamic surface tension value of 40 mN/m or more and 70 mN/m or less at 25°C.
- an inkjet textile printing ink containing a pigment and water is ejected from an inkjet head to record an image on the fabric.
- Method. 8 A pretreatment step of applying the pretreatment liquid for inkjet textile printing according to any one of 1) to 6) to a fabric to form a wet precoat layer, and without drying the fabric after the pretreatment step, A step of ejecting an ink for inkjet textile printing containing a pigment and water from an inkjet head onto a part or all of the wet precoat layer to record an image on the fabric, and inkjet textile printing on the fabric.
- a textile printing method wherein the amount of the pretreatment liquid applied per unit area is more than 0.035 g/cm 2 and less than 0.070 g/cm 2 .
- Method. 11 The textile printing method according to 7) or 8), wherein the fabric is cotton or a blend containing cotton.
- the pretreatment liquid for inkjet textile printing contains at least water, a cationic polymer, a (meth)acrylic acid-based vinyl copolymer, and a cross-linking agent. , contains
- the pretreatment liquid will be described in detail below.
- the pretreatment liquid for inkjet textile printing comprises water, 100 parts by mass of the cationic polymer (A), 5 parts by mass or more and less than 100 parts by mass of the (meth)acrylic acid-based vinyl copolymer (B), and a cross-linking agent.
- (C) is contained in each solid content ratio of 2 parts by mass or more and less than 30 parts by mass, and the weight solid content in the liquid is 2 mass % or more and 30 mass % or less.
- solid content refers to non-volatile substances contained in each of the cationic polymer (A), the (meth)acrylic acid-based vinyl copolymer (B), and the cross-linking agent (C). , and "solids by weight” will be described later.
- the pretreatment liquid contains water.
- water pure water such as ion-exchanged water, ultrafiltrated water, reverse osmosis water, distilled water, or ultrapure water can be used without any particular limitation.
- the content of water is not particularly limited and may be determined as appropriate. It is preferably contained in an amount of 70 to 80% by mass with respect to the
- the pretreatment liquid contains a cationic polymer (A). Containing the cationic polymer (A) improves the cohesiveness of the resin-coated colorant in the ink for inkjet textile printing, which will be described later.
- the cationic polymer (A) may be abbreviated as "cationic polymer”.
- the cationic polymer is preferably a compound containing one or more structural units selected from the group consisting of allylamine structural units, diallylamine structural units, diallylammonium structural units, and epihalohydrin structural units.
- Compounds containing one or more structural units selected from the group consisting of structural units and epihalohydrin structural units are more preferred, and compounds containing an epihalohydrin structural unit are particularly preferred. All of the above cationic polymers are strong electrolytes, and the cationic polymers have good dissolution stability in the pretreatment liquid and are excellent in ability to reduce pigment dispersion in the ink.
- allylamine acetate copolymer As the cationic polymer containing allylamine structural units, known ones can be appropriately selected and used.
- allylamine acetate copolymer As the cationic polymer containing allylamine structural units, known ones can be appropriately selected and used.
- allylamine acetate copolymer allylamine acetate ⁇ diallylamine acetate copolymer, allylamine hydrochloride ⁇ dimethylallylamine hydrochloride copolymer, allylamine ⁇ dimethylallylamine copolymer, polydiallylamine hydrochloride, polymethyldiallylamine hydrochloride, polymethyldiallylamine amide sulfate, poly Methyldiallylamine Acetate, Polydiallyldimethylammonium Chloride, Diallylamine Acetate/Sulfur Dioxide Copolymer, Diallylmethylethylammonium Ethyl Sulfate/Sulfur Dioxide Cop
- cationic polymers containing such allylamine structural units commercially available products can be used.
- cationic polymer containing the diallylamine structural unit known ones can be appropriately selected and used, and examples thereof include PAS-21CL, PAS-21, PAS-M-1L, PAS-M-1 and PAS-M. -1A, PAS-92, PAS-92A (manufactured by Nittobo Medical); and Unisense KCA100L and KCA101L (manufactured by Senka).
- cationic polymer containing a diallyl ammonium structural unit a known one can be appropriately selected and used, and examples thereof include hydrochlorides and ethyl sulfates of diallyldimethylammonium or diallylmethylethylammonium. .
- cationic polymer containing such diallylammonium structural units commercially available products can be used, for example, PAS-H-1L, PAS-H-5L, PAS-H-10L, PAS-24, PAS-J -81L, PAS-J-81, PAS-J-41 (manufactured by Nittobo Medical); Unisense FPA100L, FPA101L, FPA102L, FPA1000L, FPA1001L, FPA1002L, FCA1000L, FCA1001L, FCA5000L (manufactured by Senka).
- PAS-880 manufactured by Nittobo Medical Co., Ltd.
- PAS-880 can be mentioned as a commercial product of a cationic polymer compound containing both a diallylamine structural unit and a diallylammonium structural unit.
- cationic polymer containing an epihalohydrin structural unit known ones can be appropriately selected and used. can be mentioned. Epichlorohydrin or methylepichlorohydrin is preferably selected as the epihalohydrin in terms of availability.
- a printed material using a cationic polymer containing an epihalohydrin structural unit is excellent in water resistance, and is also preferably selected from this point of view.
- cationic polymers containing such epihalohydrin structural units commercially available products can be used.
- the cationic polymer (A) preferably contains any resin selected from the group consisting of epihalohydrin-modified polyamine resins, epihalohydrin-modified polyamide resins, epihalohydrin-modified polyamidepolyamine resins, and epihalohydrin-amine copolymers.
- the above cationic polymer may be synthesized by a known synthesis method, or may be a commercially available product.
- the content of the cationic polymer is preferably 1.7 to 8.0% by mass, more preferably 2.0 to 7.0% by mass, particularly preferably 2.0% by mass, based on the total liquid weight of the pretreatment liquid. .5 to 6.0% by mass.
- it is 1.7% by mass or more, effective cohesiveness is obtained, and strike-through and whiteness tend to be improved.
- it is 8.0 mass % or less, it tends to be excellent in storage stability and reduction of traces.
- the viscosity of a 10 mass % aqueous solution of the cationic polymer at 25° C. is preferably 1.0 to 5.0 mPa ⁇ s, more preferably 1.0 to 2.5 mPa ⁇ s, still more preferably 1.0 to 2.5 mPa ⁇ s. 0 mPa ⁇ s, most preferably 1.0 to 1.5 mPa ⁇ s.
- the weight-average molecular weight of the cationic polymer is usually 300 to 40,000 in consideration of the miscibility with other components contained in the pretreatment liquid, the water resistance of the pretreated fabric, and the fastness to washing and adhesion. It is preferably 400 to 30,000, preferably 500 to 20,000, more preferably 500 to 10,000. If it is 300 or more, effective cohesion ability is obtained, and strike-through and whiteness tend to be improved. If it is 40000 or less, it can be used as an aqueous solution and tends to be excellent in storage stability. In addition, by making it 40000 or less, there is a tendency to reduce strike-through and decrease in whiteness.
- the weight average molecular weight of the cationic polymer can be measured by standard polystyrene conversion using gel permeation chromatography (GPC).
- the pretreatment liquid contains a (meth)acrylic acid-based vinyl copolymer (B).
- a pretreatment liquid containing a (meth)acrylic acid-based vinyl copolymer By applying a pretreatment liquid containing a (meth)acrylic acid-based vinyl copolymer on the fabric, the fabric surface is smoothed, thereby improving the color development during printing, and is used in combination with a cross-linking agent described later. This improves the water resistance of the printed fabric.
- the (meth)acrylic acid-based vinyl copolymer (B) may be abbreviated as "(meth)acrylic acid-based vinyl copolymer”.
- the (meth)acrylic acid-based vinyl copolymer refers to a polymer polymerized using at least two types of monomer components selected from (meth)acrylic acid or (meth)acrylic acid esters.
- alkyl (meth)acrylate (b1), carboxy group and a styrene derivative (b3) as monomer components.
- the (meth)acrylic acid-based vinyl copolymer may be a commercially available product or a synthetic product, and the synthetic product can be synthesized by a known radical polymerization method using a known monomer. .
- the weight average molecular weight (Mw) of the (meth)acrylic acid-based vinyl copolymer is preferably 1000 or more, more preferably 5000 or more, still more preferably 10000 or more, and 100000 or more. is particularly preferred.
- the molecular weight is preferably 100,000 or more from the viewpoint of fixing property after heating and color fastness.
- the (meth)acrylic acid-based vinyl copolymer may contain monomer components other than (meth)acrylic acid and (meth)acrylic acid ester, and particularly preferably contains a styrene derivative as a monomer component.
- styrene derivatives include styrene, alkyl-substituted styrenes (eg ⁇ -methylstyrene etc.), halogen-substituted styrenes (eg 2-chlorostyrene etc.) and the like.
- (meth)acrylic acid-based vinyl copolymer examples include, for example, Movinyl 6751D (glass transition point -32°C), Movinyl 6960 (glass transition point -32°C) and Movinyl 6963 manufactured by Japan Coating Resin Co., Ltd.
- the amount of the (meth)acrylic acid-based vinyl copolymer in the pretreatment liquid is preferably 0.2% by mass or more, more preferably 1% by mass or more, relative to the total liquid weight of the pretreatment liquid. , 2% by mass or more.
- the amount of the (meth)acrylic acid-based vinyl copolymer in the treatment liquid is preferably 10% by mass or less, more preferably 8% by mass or less, and 5% by mass, based on the weight solid content of the pretreatment liquid. The following is more preferable, and may be, for example, 3% by mass or less.
- the amount of the (meth)acrylic acid-based vinyl copolymer is the amount in terms of solid content (that is, the amount of the resin only), and the same applies hereinafter.
- the glass transition temperature (Tg) of the (meth)acrylic acid-based vinyl copolymer is usually 10 ° C. or less, preferably -10 ° C. It is below. Although the lower limit of Tg is not particularly limited, it is preferably -40°C or higher.
- the elastic modulus was measured in the same manner as the elongation at break measurement described above, by preparing a film with a thickness of about 60 ⁇ m from a (meth)acrylic acid-based vinyl copolymer, and performing a tensile test with a parallel portion width of 10 mm and a length of 40 mm. It is molded into a dumbbell and subjected to a tensile test in accordance with JIS K7161:1994 to determine the tensile modulus of elasticity.
- the (meth)acrylic acid-based vinyl copolymer may be a water-soluble polymer or a water-dispersible polymer (O/W emulsion).
- the D50 (average particle size) of the (meth)acrylic acid-based vinyl copolymer is usually 30 to 300 nm, preferably 80 to 300 nm. With such a D50, the dispersibility of the (meth)acrylic acid-based vinyl copolymer in the pretreatment liquid can be improved.
- (meth)acrylic represents any one of acrylic and its corresponding methacrylic
- (meth)acrylate represents any of acrylate and its corresponding methacrylate
- (meth) “Acryloyl” refers to either acryloyl or its corresponding methacryloyl.
- the pretreatment liquid contains a cross-linking agent.
- the cross-linking agent include a compound having a blocked isocyanate group, a compound having an epoxy group, a compound having an oxazoline group, a compound having a carbodiimide group, a compound having a methylol group, a compound having a cyclocarbonate group, a compound having an azilinyl group, A compound having an acetoacetyl group, a compound having a silanol group, and the like are included. These may be used individually by 1 type, and may use 2 or more types together.
- a compound having a carbodiimide group a compound having an oxazoline group, a compound having a blocked isocyanate group, and a compound containing an epoxy group are preferable from the viewpoint of improving water resistance.
- a compound having a carbodiimide group It may be a water-soluble compound or a water-dispersible compound, but from the viewpoint of storage stability, it is preferably a water-dispersible compound.
- the compound having a carbodiimide group is added to the pretreatment liquid as an aqueous solution or emulsion from the viewpoint of improving the storage stability, scratch resistance, solvent resistance, and substrate adhesion of the pretreatment liquid (pretreatment composition). It is preferably blended, and from the viewpoint of improving the storage stability of the pretreatment liquid, it is preferably blended in the pretreatment liquid as an aqueous solution.
- Examples of commercially available compounds having a carbodiimide group include Carbodilite E-02, Carbodilite E-03A, Carbodilite E-05, Carbodilite V-02, Carbodilite V-02-L2, and Carbodilite V-04 (Nisshinbo Chemical Co., Ltd.). product, trade name), and the like. Among these, Carbodilite E-02, E-05 and Carbodilite V-04 are preferable from the viewpoint of storage stability of the pretreatment liquid.
- the compound having an oxazoline group is incorporated in the pretreatment liquid (pretreatment composition) as an aqueous solution or emulsion from the viewpoint of improving the storage stability, scratch resistance, solvent resistance and adhesion of the pretreatment liquid.
- pretreatment composition pretreatment composition
- a polyoxazoline compound having two or more oxazoline groups in one molecule is preferred.
- Examples of commercially available compounds having the above oxazoline group include "EPOCROS WS series” such as “EPOCROS WS-300", “EPOCROS WS-500”, and “EPOCROS WS-700” (above, manufactured by Nippon Shokubai Co., Ltd., water-soluble type); Epocross K-2010E, Epocross K-2020E, etc., "Epochros K Series” (manufactured by Nippon Shokubai Co., Ltd., trade name, emulsion type), and the like.
- Epocross WS-300, Epocross WS-500, and Epocross WS-700 are preferred from the viewpoint of storage stability of the pretreatment liquid.
- the compound having a blocked isocyanate group is obtained by blocking the isocyanate group in the polyisocyanate compound with a blocking agent. By blocking the highly reactive isocyanate group, the isocyanate group is stabilized, improving the storage stability of the pretreatment liquid (aqueous composition) and forming a strong ink film after the cross-linking reaction. can do.
- a polyisocyanate compound is a compound having two or more isocyanate groups in one molecule. Examples of the polyisocyanate compound include aliphatic isocyanates, alicyclic isocyanates, araliphatic isocyanates, aromatic isocyanates, etc., and modifications thereof. body. Modified polyisocyanate compounds include polymers such as isocyanurate; biuret; adducts of trimethylolpropane and pentaerythritol with polyhydric alcohols.
- aliphatic isocyanate a diisocyanate having a linear or branched aliphatic hydrocarbon group between two isocyanate groups is preferred.
- the number of carbon atoms in the aliphatic hydrocarbon group is preferably 2 or more, more preferably 3 or more, and preferably 10 or less, more preferably 9 or less, still more preferably 8 or less.
- tetramethylene diisocyanate pentamethylene diisocyanate, hexamethylene diisocyanate (HDI), heptamethylene diisocyanate, octamethylene diisocyanate, decamethylene diisocyanate, dodecamethylene diisocyanate, 2,2,4- or 2,4,4-trimethyl hexamethylene diisocyanate and the like.
- Alicyclic isocyanates include hydrogenated xylylene diisocyanate (H6XDI), 1,4-cyclohexane diisocyanate, 4,4′-dicyclohexylmethane diisocyanate (H12MDI), isophorone diisocyanate (IPDI), 2,5- or 2, 6-norbornane diisocyanate and the like.
- Aroaliphatic isocyanates include m- or p-xylylene diisocyanate (XDI), tetramethylxylylene diisocyanate (TMXDI), and the like.
- Aromatic isocyanates include 1,3- or 1,4-phenylene diisocyanate, 2,4- or 2,6-tolylene diisocyanate (TDI), 4,4'- or 2,4'-diphenylmethane diisocyanate (MDI) , m- or p-isocyanatophenylsulfonyl isocyanate, 4,4′-diisocyanatobiphenyl, 4,4′-diisocyanato-3,3′-dimethylbiphenyl, 1,5-naphthylene diisocyanate, 2,6-dimethyl and benzene-1,4-diisocyanate.
- TDI 2,4- or 2,6-tolylene diisocyanate
- MDI 4,4'- or 2,4'-diphenylmethane diisocyanate
- MDI 4,4'- or 2,4'-diphenylmethane diisocyanate
- the above blocking agents include amines such as 3,5-dimethylpyrazole (DMP), 1,2,4-triazole and diisopropylamine; phenols such as phenol and cresol; oximes such as methyl ethyl ketoxime; Lactams; compounds having active hydrogen such as active methylene compounds such as diethyl malonate and ethyl acetoacetate.
- DMP 3,5-dimethylpyrazole
- DMP 3,5-dimethylpyrazole
- methylethylketoxime are preferred, and 3,5-dimethylpyrazole (DMP) is more preferred.
- the dissociation temperature of the compound having a blocked isocyanate group is preferably 120°C or higher, more preferably 125°C or higher, from the viewpoint of improving storage stability, scratch resistance, and adhesion. When the temperature is 120°C or higher, the storage stability tends to be good. From the viewpoint of suppressing damage such as deformation of the recording medium, the dissociation temperature is preferably 200° C. or lower, more preferably 180° C. or lower. In particular, when using polyester or a blend containing polyester for the fabric, it is necessary to perform the drying process after printing at a drying temperature of 130 ° C. or less in order to prevent dye migration (hereinafter simply referred to as dye transfer). , the dissociation temperature is preferably 130° C. or lower.
- Trixene blocked isocyanates Aqua BI120, Aqua BI200, Aqua BI220, Aqua BI522, 7950, 7951, 7960, 7961, 7982, 7990, 7991, 7992 (manufactured by Baxenden).
- DM-6400 Meikanate DM-3031CONC, Meikanate DM-35HC, Meikanate TP-10, Meikanate ST, Meikanate PRO, NBP-873D (manufactured by Meisei Chemical Industry Co., Ltd., trade names); Elastron BN- 69, BN-77, BN-27, BN-11 (manufactured by Daiichi Kogyo Seiyaku Co., Ltd., trade names); Takenate WB-700, WB-770, WB-920 (manufactured by Mitsui Chemicals Polyurethane Co., Ltd., trade name); Duranate MF-K60B, SBN-70D, MF-B60B, MF-B90B, 17B-60P, TPA-B80B, TPA-B80E, E402-B80B (manufactured by Asahi Kasei Corporation, trade name); Fixer N (manufactured
- the solid content ratio of the cationic polymer (A), the (meth)acrylic acid-based vinyl copolymer (B), and the cross-linking agent (C) in the pretreatment liquid for inkjet textile printing is 100% of the cationic polymer (A). 5 parts by mass or more and less than 100 parts by mass of the (meth)acrylic acid-based vinyl copolymer (B), and 2 parts by mass or more and less than 30 parts by mass of the cross-linking agent (C); 100 parts by mass of the curable polymer (A), 90 to 5 parts by mass of the (meth)acrylic acid-based vinyl copolymer (B), and 2 to 20 parts by mass of the cross-linking agent (C).
- 100 parts by mass of the cationic polymer (A), 30 to 10 parts by mass of the (meth)acrylic acid-based vinyl copolymer (B), 3 to 8 parts by mass of the cross-linking agent (C) is highly preferred.
- the cationic polymer (A) when the cationic polymer (A) is present in a large amount, it has the effect of aggregating the colorant. is large, and the effect of improving the color development on the surface of the fabric by preventing the penetration and diffusion of the ink into the fabric is also improved compared to the cationic polymer (A). ) has a high film-forming property, it is presumed that by reducing the blending ratio of (B), the effect of reducing traces on the fabric can be obtained. In addition, when the blending ratio of the cross-linking agent (C) is large, the trace residue described later increases. .
- the weight solid content in the pretreatment liquid for inkjet textile printing is 2% by mass or more and 30% by mass or less, preferably 3% by mass to 20% by mass, and 4% by mass to 15% by mass. is more preferred, and 5% by mass to 10% by mass is extremely preferred.
- the solid content by weight refers to the weight ratio of the solid content remaining on the moisture meter when 5 g of the pretreatment liquid is dried by heating at 160° C. using a commercially available heat drying moisture meter.
- the above pretreatment liquid for inkjet textile printing preferably has a dynamic surface tension value at 25°C of 40 mN/m or more and 70 mN/m or less, more preferably 45 mN/m or more and 65 mN/m or less.
- Dynamic surface tension can be measured using, for example, a bubble pressure dynamic surface tension meter.
- the pretreatment liquid contains various additives such as aqueous solvents, surface tension modifiers, viscosity modifiers, antifungal agents, preservatives, pH adjusters, chelating agents, rust inhibitors, ultraviolet absorbers, and antioxidants. Agents can be added appropriately according to the purpose of pretreatment liquid storage stability, improvement of clogging, prevention of deterioration of fabric fibers, and the like.
- the pretreatment liquid may contain an aqueous solvent as another component.
- the aqueous solvent is not particularly limited, it is preferably an aqueous solvent having a function as a penetrating agent or a moisturizing agent.
- One of the aqueous solvents may be used alone, or two or more thereof may be used in combination.
- the pretreatment liquid may contain a penetrant as the aqueous solvent.
- a penetrant By containing the penetrant, the permeability of the pretreatment liquid is improved, so that the pretreatment liquid can quickly permeate the fabric, and the effect of reducing treatment traces can be obtained.
- the penetrant include alkyl ethers of polyhydric alcohols (glycol ethers) and 1,2-alkyldiols.
- the glycol ethers include, but are not limited to, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monomethyl ether acetate, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, diethylene glycol mono-t-butyl ether, triethylene glycol monobutyl ether, 1-methyl-1-methoxybutanol, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, Propylene glycol monobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monomethyl
- 1,2-alkyldiols examples include, but are not limited to, 1,2-pentanediol and 1,2-hexanediol.
- direct diols such as 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,7-heptanediol, and 1,8-octanediol Diols of chain hydrocarbons may also be mentioned.
- the content of the penetrating agent is preferably 0.1 to 20% by mass, more preferably 0.3 to 10% by mass, and 0.5 to 5% by mass with respect to the total mass (100% by mass) of the pretreatment liquid. is more preferable.
- the content is 0.1% by mass or more, the degree of penetration of the pretreatment liquid into the fabric can be increased. Further, when the content is 20% by mass or less, excessive permeation of the pretreatment liquid component into the fabric can be prevented, and deterioration of color developability during printing can be suppressed.
- the pretreatment liquid may contain a humectant (wetting agent) as the aqueous solvent in addition to the penetrant.
- a humectant wetting agent
- any one generally used for inkjet ink can be used without particular limitation.
- a high-boiling humectant having a boiling point of preferably 180° C. or higher, more preferably 200° C. or higher is preferably used. When the boiling point is within the above range, the pretreatment liquid can be imparted with good water retentivity and wettability.
- high boiling point humectant examples include 2-pyrrolidone, N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol, penta Methylene glycol, trimethylene glycol, 2-butene-1,4-diol, 2-ethyl-1,3-hexanediol, 2-methyl-2,4-pentanediol, tripropylene glycol, polyethylene with a number average molecular weight of 2000 or less Glycol, 1,3-propylene glycol, isopropylene glycol, isobutylene glycol, glycerin, mesoerythritol, and pentaerythritol.
- the pretreatment liquid By including a humectant with a high boiling point in the pretreatment liquid, it is possible to suppress the solidification of the pretreatment components caused by the evaporation of water at the gas-liquid interface, and to obtain a pretreatment liquid that can maintain its fluidity for a long period of time. thinking.
- a spray coating device it is possible to prevent the pretreatment liquid from solidifying in the vicinity of the spray unit, thereby reducing deterioration of the working environment.
- the content of the moisturizing agent is not particularly limited, and may be determined as appropriate, preferably 1% to 20%, more preferably 1% to 10%.
- the pretreatment liquid may contain a surface tension modifier as another component.
- the type of the surface tension modifier is not particularly limited as long as it has the function of adjusting the static surface tension and dynamic surface tension of the treatment liquid.
- the surface tension modifier include acetylene glycol surfactants , and polyalkylene glycol surfactants. Containing a surface tension modifier suppresses an increase in the viscosity of the pretreatment liquid, aggregation of components at the gas-liquid interface, and the like, thereby further improving the storage stability.
- Surfactants selected from the above alkylene oxide adducts include, for example, the Surfynol series (420, 440, 465, 61, etc.) manufactured by Nissin Chemical Industry Co., Ltd., and the Olphine series (E1004, E1010, EXP-4001, etc.). ).
- the polyalkylene glycol surfactant is selected from, for example, polyoxyalkylene alkyl ethers (e.g., polyoxyethylene alkyl ethers, etc.), fatty acid ethylene oxide adducts, higher alkylamine ethylene oxide adducts, and polyoxyalkylene polyoxyalkylene glycols. are preferred. Among these, polyoxyalkylene polyoxyalkylene glycol is preferred, and polyoxyethylene polyoxypropylene glycol is more preferred.
- polyoxyalkylene alkyl ether examples include polyoxyalkylene branched decyl ether, polyoxyalkylene tridecyl ether, polyoxyethylene isodecyl ether, polyoxyalkylene lauryl ether, and the like.
- examples of commercially available products include Noigen XL-40, 50, 60, 70, 80, 100, 140, 160, Noigen TDS-30, 50, 70, 80, 90 manufactured by Daiichi Kogyo Seiyaku Co., Ltd. 100, 120 and the like.
- fatty acid ethylene oxide adducts examples include stearic acid ethylene oxide adducts and polyethylene glycol lauric acid esters.
- Examples of commercially available products thereof include Emanone 1112, 3199V, 3299V, 3299VR, 3201M-V manufactured by Kao Corporation.
- Examples of commercial products of the higher alkylamine ethylene oxide adducts include Amit 102, 105, 105A, 302 and 320 manufactured by Kao Corporation.
- Examples of commercially available polyoxyalkylene polyoxyalkylene glycols include Emulgen PP-290 (160/30 polyethylene glycol/polypropylene glycol copolymer) manufactured by Kao Corporation; Newpol manufactured by Sanyo Chemical Industries, Ltd.
- PE-61, PE-62, PE-64, PE-68, PE-71, PE-74, PE-75, PE-78, PE-108 polyoxyethylene polyoxypropylene block polymer
- Daiichi Kogyo Seiyaku Epan Co., Ltd. 410, 420, 450, 485, 680, 710, 720, 740, 750, 785, U-103, U-105, U-108 weight average molecular weight of polypropylene glycol is about 950 to 4000, poly and polyoxyethylene polyoxypropylene glycol having an oxyethylene content of about 5 to 95%).
- the content of the surface tension modifier is usually 0.05 to 5%, preferably 0.05 to 3%, more preferably 0.05 to 1%, still more preferably 0.05 to 1%, relative to the total mass of the pretreatment liquid. It is about 1 to 0.5%. By setting it as such content, the handleability and coloring property at the time of application
- the pretreatment liquid may contain a viscosity modifier as another component.
- viscosity modifiers include starches such as corn and wheat; cellulose compounds such as carboxymethylcellulose and hydroxymethylcellulose; polysaccharides such as sodium alginate, gum arabic, locust bean gum, tranto gum, guar gum, and tamarind seed; gelatin and casein. natural water-soluble polymers such as tannin and lignin; and synthetic water-soluble polymer compounds containing polyvinyl alcohol, polyethylene oxide, acrylic acid, maleic anhydride, and the like.
- the content of the viscosity modifier is usually about 20% or less with respect to the total mass of the pretreatment liquid.
- the pretreatment liquid may contain an antifungal agent as another component.
- an antifungal agent include sodium dehydroacetate, sodium benzoate, sodium pyridinethione-1-oxide, ethyl p-hydroxybenzoate, 1,2-benzisothiazolin-3-one and salts thereof. be done.
- the pretreatment liquid may contain a preservative as another component.
- the antiseptic include organic sulfur, organic nitrogen sulfur, organic halogen, haloarylsulfone, iodopropargyl, haloalkylthio, nitrile, pyridine, 8-oxyquinoline, benzo Thiazole type, isothiazoline type, dithiol type, pyridine oxide type, nitropropane type, organic tin type, phenol type, quaternary ammonium salt type, triazine type, thiazine type, anilide type, adamantane type, dithiocarbamate type, brominated indanone type , benzyl bromoacetate-based compounds, inorganic salt-based compounds, and the like.
- organic halogen compounds include sodium pentachlorophenol.
- pyridine oxide compounds include sodium 2-pyridinethiol-1-oxide.
- isothiazoline compounds include 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3- on, 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 and the like.
- antiseptics preservatives and antifungal agents
- examples of other antiseptics include anhydrous sodium acetate, sodium sorbate, sodium benzoate, trade names Proxel GXL (S) and Proxel XL-2 (S) manufactured by Lonza. be done.
- the pretreatment liquid may contain a pH adjuster as another component.
- a pH adjuster any substance can be used as long as it can control the pH of the pretreatment liquid within the range of, for example, 4 to 11 without adversely affecting the pretreatment liquid to be prepared.
- alkali metal carbonates such as lithium carbonate, sodium carbonate, sodium hydrogencarbonate and potassium carbonate
- alkali metal salts of organic acids such as sodium silicate and potassium acetate
- phosphoric acid such as disodium phosphate.
- salts and organic amino compounds such as triethanolamine and diethanolamine.
- a water-soluble polymer amino compound such as a water-soluble polyamine or polyimine may also be used as the viscosity modifier.
- the pretreatment liquid may contain a chelating agent as another component.
- a chelating agent include disodium ethylenediaminetetraacetate, sodium nitrilotriacetate, sodium hydroxyethylethylenediaminetriacetate, sodium diethylenetriaminepentaacetate, and sodium uracil diacetate.
- the pretreatment liquid may contain a rust inhibitor as another component.
- a rust inhibitor as another component.
- Specific examples of the antirust agent include acid sulfite, sodium thiosulfate, ammonium thioglycolate, diisopropylammonium nitrite, pentaerythritol tetranitrate, and dicyclohexylammonium nitrite.
- the pretreatment liquid may contain an ultraviolet absorber (in particular, a water-soluble ultraviolet absorber) as another component.
- an ultraviolet absorber in particular, a water-soluble ultraviolet absorber
- water-soluble ultraviolet absorbers include sulfonated benzophenone-based compounds, benzotriazole-based compounds, salicylic acid-based compounds, cinnamic acid-based compounds, and triazine-based compounds.
- the pretreatment liquid may contain an antioxidant as another component.
- an antioxidant for example, various organic and metal complex antioxidants (also referred to as "anti-fading agent") can be used. Specific examples of the above organic antioxidants include hydroquinones, alkoxyphenols, dialkoxyphenols, phenols, anilines, amines, indanes, chromans, alkoxyanilines, and heterocycles. be done.
- One of the above-described components and the like can be used alone. Moreover, two or more types can also be used together. In addition, with respect to all of the above items, a combination of preferable items is more preferable, and a combination of more preferable items is even more preferable. The same applies to the combination of preferable items and more preferable items.
- the pretreatment liquid can be prepared, for example, as follows. Water, a cationic polymer, an acrylic acid-based vinyl copolymer, a cross-linking agent, and, if necessary, a method of further adding a preparation agent such as those listed above, stirring and mixing, and optionally filtering. be done.
- a preparation agent such as those listed above
- stirring and mixing stirring and mixing
- optionally filtering be done.
- the method for preparing the pretreatment liquid of the present invention is not limited to the above.
- the inkjet textile printing ink contains a pigment and water.
- the water may be the same as that described in the section of the pretreatment liquid for ink jet textile printing.
- ink for inkjet textile printing may be abbreviated as ink composition or ink.
- the above pigment is not particularly limited, and known pigments can be used. As pigments, inorganic pigments, organic pigments, extender pigments and the like are known.
- Examples of the above inorganic pigments include carbon black, metal oxides, hydroxides, sulfides, ferrocyanides, and metal chlorides.
- carbon black is preferable as the black pigment.
- types of carbon black for example, thermal black and acetylene black obtained by pyrolysis; oil furnace black, gas furnace black, lamp black, gas black, and channel black obtained by incomplete combustion; mentioned.
- acetylene black, oil furnace black, gas furnace black, lamp black, channel black and the like are preferable.
- a metal oxide as the white inorganic pigment.
- metal oxides include zinc oxide, titanium oxide, and zirconia oxide, with titanium oxide being preferred.
- Types of titanium oxide include rutile type and anatase type.
- the above titanium oxide may be used as a powder as it is, or may be used after being surface-treated with silicon dioxide, aluminum oxide, zirconia oxide, zinc oxide, or an organic material having a hydroxyl group. Among these, surface-treated titanium oxide is preferred.
- titanium oxide examples include DUAWHITETCR-52, TITONER-32, TITONER-7E, TITONER-21, TITONER-62N, TITONER-42 (manufactured by Sakai Chemical Industry Co., Ltd.); TIPAQUECR-50, TIPAQUECR- 50-2, TIPAQUECR-58, TIPAQUECR-60, TIPAQUECR-80, TIPAQUECR-90 (manufactured by Ishihara Sangyo Co., Ltd.); TITANIX JA-600A, TITANIX JR-605 (manufactured by Tayca Corporation); ST-455 , ST-455 WB, ST-457 SA, ST-457 EC (manufactured by Titan Kogyo Co., Ltd.);
- 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. pigments.
- organic pigments include C.I. I.
- extender pigments examples include silica, calcium carbonate, talc, clay, barium sulfate, and white carbon. Although these extender pigments may be used alone, they are usually used in combination with inorganic or organic pigments.
- a single pigment is usually used as the above pigment.
- two or more types of pigments may be used in combination as necessary. Examples of combined use include organic pigments and extender pigments; organic pigments and inorganic pigments; and the like.
- extender pigments may also be used in combination to improve fluidity.
- two or more pigments selected from inorganic pigments and organic pigments can be used in combination to adjust the hue of the dyed article.
- the hue adjustment referred to here is performed for the purpose of obtaining a dyed product with a shading; widening the color gamut of dyeing; and the like.
- several kinds of organic pigments can be used together to adjust the desired hue.
- resin emulsions include styrene-butadiene resins, acrylic resins, epoxy resins, urethane resins, polyether resins, polyamide resins, unsaturated polyester resins, phenol resins, silicone resins, fluorine resins, polyvinyl resins (polyvinyl chloride, polyvinyl vinyl acetate, polyvinyl alcohol, etc.), alkyd resin, polyester resin, amino resin (melanin resin, urea resin, urea resin, melanin formaldehyde resin, etc.).
- the resin emulsion may contain two or more resins. Moreover, two or more kinds of resins may form a core/shell structure.
- Styrene-butadiene resin emulsions are often sold in the form of latex (emulsion) and can be easily purchased.
- Specific examples include Nipol LX415M, Nipol LX432M, Nipol LX433C, Nipol LX421, Nipol 2507H, Nipol LX303A (manufactured by Zeon Corporation), grades 0695, 0696, 0561, 0589, 0602, 2108, 0533, 0545, 0548, 0568, 0569, 0573, 0597C, 0850Z latex (manufactured by JSR Corporation), etc., and most of them are liquids obtained by emulsifying resins with a solid content of 30 to 60%.
- any of the latexes described above can be used, but among them, it is preferable to use a carboxy-modified styrene-butadiene resin.
- resins include Nipol LX415M, Nipol LX432M, Nipol LX433C, Nipol LX421, 0695, 0696, 0533, 0545, 0548, 0568, 0569, 0573, 0597C, 0850Z, 0695, 0533, 0568, 0597C and 0850Z are preferred, and JSR0568 (manufactured by JSR Corporation) is more preferred.
- a single styrene-butadiene resin may be used, or two or three types may be used in combination.
- the content of the styrene-butadiene resin emulsion is preferably 1 to 30% of the ink composition.
- Urethane resin emulsions are commercially available, and most of them are emulsions with a solid concentration of 30 to 60% by mass.
- Examples of commercially available urethane resin emulsions include Permalin UA-150, 200, 310, 368, 3945, Ukote UX-320 (manufactured by Sanyo Kasei Co., Ltd.); Hydran WLS-201, 202, 210, 213, 221.
- polycarbonate-based urethane resins examples include Permaline UA-310, 3945; Ukote UX-320; and the like.
- polyether-based urethane resins examples include Permalin UA-150 and 200; Ukote UX-340; and the like.
- the acidic group may be alkali chlorided.
- a urethane resin having an acidic group is added to water and stirred to prepare an aqueous solution, and an alkaline compound is added thereto to adjust the pH to 6.0 to 12.0, whereby the acidic group is alkali chlorided. can do.
- alkaline compounds include hydroxides of alkali metals such as lithium hydroxide, sodium hydroxide and potassium hydroxide; water of alkaline earth metals such as beryllium hydroxide, magnesium hydroxide, calcium hydroxide and strontium hydroxide. oxide; and the like. Alkaline compounds may be used alone or in combination of two or more.
- surfactants contained in the ink composition include known surfactants such as anionic, cationic, nonionic, amphoteric, silicone, and fluorine surfactants.
- anionic surfactants include alkyl sulfonates, alkyl carboxylates, ⁇ -olefin sulfonates, polyoxyethylene alkyl ether acetates, N-acyl amino acids and their salts, N-acyl methyl taurate salts, and alkyl sulfates.
- Cationic surfactants include 2-vinylpyridine derivatives, poly-4-vinylpyridine derivatives and the like.
- Nonionic surfactants include ether-based surfactants such as polyoxyethylene nonylphenyl ether, polyoxyethylene octylphenyl ether, polyoxyethylene dodecylphenyl ether, polyoxyethylene oleyl ether, polyoxyethylene lauryl ether, and polyoxyethylene alkyl ether; Esters such as polyoxyethylene oleate, polyoxyethylene distearate, sorbitan laurate, sorbitan monostearate, sorbitan monooleate, sorbitan sesquioleate, polyoxyethylene monooleate, polyoxyethylene stearate; 2,4,7,9-tetramethyl-5-decyne-4,7-diol, 3,6-dimethyl-4-octyne-3,6-diol, 3,5-dimethyl-1-hexyn-3-ol Acetylene glycol (alcohol) system such as Nissin Kagaku Co., Ltd., trade name Surfyn
- Amphoteric surfactants include lauryldimethylaminoacetic acid betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine, polyoctylpolyaminoethylglycine, imidazoline derivatives, and the like. is mentioned.
- silicone-based surfactants include polyether-modified siloxane and polyether-modified polydimethylsiloxane.
- fluorine-based surfactants include perfluoroalkylsulfonic acid compounds, perfluoroalkylcarboxylic acid compounds, perfluoroalkylphosphoric acid ester compounds, perfluoroalkylethylene oxide adducts, and perfluoroalkyl ether groups having side chains.
- polyoxyalkylene ether polymer compounds having Specific examples of commercially available products include Zonyl TBS, FSP, FSA, FSN-100, FSN, FSO-100, FSO, FS-300, Capstone FS-30, FS-31 (manufactured by DuPont); PF-151N. , PF-154N (manufactured by Omnova), and the like.
- inkjet textile printing refers to recording (printing) ink on (the surface of) fabric, which is a type of recording medium, using an inkjet method, and is a type of inkjet recording.
- a “recorded matter” refers to a recording medium on which ink is recorded to form an image.
- the term "printed material” is included in the above-mentioned recorded matter, and refers to an image formed by recording ink on (the surface of) a cloth, which is a type of recording medium.
- the above “fabric” refers to clothing materials in general that are composed of fibers, and may be woven or knitted, and the method of manufacturing the fabric is not particularly limited. Also, the fabric may be dyed in advance with a coloring matter such as a dye or a pigment. Also, the type of fibers constituting the fabric is not particularly limited. Examples thereof include fibers selected from the group consisting of natural fibers such as silk, cotton and wool, synthetic fibers such as nylon and polyester, cellulose fibers such as rayon and cupra, or blended fibers thereof. is mentioned. Among these, cotton, blended fibers containing cotton, polyester, and blended fibers containing polyester are preferable, and in the case of pre-dyed fabrics, cotton is particularly preferable from the viewpoint of preventing dye transfer.
- the present invention also includes an ink set for inkjet textile printing, which contains the pretreatment liquid for inkjet textile printing and an ink for inkjet textile printing containing a pigment and water.
- the pretreatment liquid may be used singly or in combination of two or more.
- one type of ink for inkjet textile printing containing the above pigment and water may be used alone, or two or more types may be used in combination.
- the above-mentioned pretreatment liquid of the present invention provides an ink set for inkjet textile printing which is excellent in the stability of the pretreatment liquid, the water resistance and the texture of the printed fabric, and the texture of the printed fabric, and which is excellent in the color development of the printed fabric. can be done. In addition, it is possible to produce a printed fabric in which traces of treatment caused by the pretreatment liquid are less likely to remain on the fabric.
- the above-mentioned “few traces of treatment” means the property that the color difference between the non-pretreated part and the pretreated part in the pretreated fabric is small.
- water resistance refers to a property in which damage to the printed fabric, such as peeling of the coating film, is reduced when a washing fastness test is performed on the printed fabric.
- color-developing property refers to the property that the ink printed on the fabric has a high color-developing efficiency and the ink sufficiently develops color.
- “Storage stability” means that the ink has low viscosity and excellent storage stability. The storage stability refers to a property in which liquid properties such as viscosity are unlikely to change before and after storage when the ink is stored at 60° C. for 2 days.
- the inkjet textile printing method includes forming an image on a fabric by inkjet textile printing using the ink set for inkjet textile printing of the above embodiment. More specifically, the above inkjet textile printing method includes a pretreatment step of applying the pretreatment liquid for inkjet textile printing of the above embodiment to a fabric, and applying the ink composition for inkjet textile printing of the above embodiment after the pretreatment step. and an image forming step of forming an image by adhering to a fabric. Further, the image forming step includes, for example, an attaching step of attaching the ink composition to the fabric and a heating step of heating the fabric to which the ink composition is attached.
- the ink composition is used by loading it into an inkjet textile printing apparatus.
- the inkjet textile printing apparatus is not particularly limited, but an example thereof includes a drop-on-demand type inkjet textile printing apparatus.
- This drop-on-demand type inkjet printing apparatus uses an apparatus that employs an inkjet printing method using a piezoelectric element provided in the head, and thermal energy from a heater of a heating resistor element provided in the head.
- There are devices that employ an inkjet textile printing method and any inkjet textile printing method may be employed.
- the fabric is pretreated with the pretreatment liquid before the ink composition is applied to the fabric to form an image.
- a pretreatment step is performed.
- the pretreatment step is to apply the pretreatment liquid of the above embodiment to the fabric, and after the pretreatment liquid is applied, the fabric may be dried, or the pretreatment liquid may be applied onto the fabric without drying. to form a wet precoat layer.
- the method used in the pretreatment step is not particularly limited, but includes, for example, a means of immersing the fabric in the pretreatment liquid and a means of applying or spraying the pretreatment liquid on the fabric.
- the heat treatment is preferably carried out at 110 to 200°C, more preferably 120 to 180°C, for 2 minutes or less.
- the heating temperature is 110° C. or higher, the fixability of the pretreatment liquid is improved. Further, when the heating temperature is 200° C. or less, it is possible to effectively prevent deterioration of the fabric and deterioration of the pretreatment liquid such as the polymer.
- the amount of the pretreatment liquid for inkjet textile printing per unit area applied to the fabric is 0.035 g. /cm 2 and less than 0.070 g/cm 2 , more preferably 0.039 to 0.063 g/cm 2 .
- the application amount of the pretreatment liquid exceeds 0.035 g/cm 2
- polyester fibers cloth fabrics used for sportswear, etc.
- thin fibers coarsely knitted fibers, etc.
- an image with high color development can be obtained.
- the applied amount of the pretreatment liquid is less than 0.070 g/cm 2 , it tends to be possible to suppress the remaining of traces of the application of the pretreatment liquid.
- a pressurizing step of applying pressure to the area where the wet pre-coat layer is formed it is preferable to have a pressurizing step of applying pressure to the area where the wet pre-coat layer is formed.
- the method used in the above-described pressurization step of applying pressure is not particularly limited, but examples include a method using a commercially available roller or spatula, a method using a flat plate press, a roller press, and the like.
- the ink composition is ejected and adhered to the pretreated fabric to form (record) an image.
- the ejection conditions may be appropriately determined depending on the physical properties of the ink composition to be ejected.
- the fabric to which the ink composition has adhered is heat-treated.
- the heat treatment can further improve the abrasion resistance of the printed fabric.
- Examples of the heat treatment that can be included in the image forming step include, but are not limited to, a hot air drying method, a heat press method, a normal pressure steam method, a high pressure steam method, and a thermofix method.
- the heat source for heating is not limited to the following, for example, an infrared ray (lamp) can be used.
- the temperature during drying is preferably 130°C or less, more preferably 120 to 130°C, from the viewpoint of preventing dye migration when dark-colored polyester fibers including black or blended fibers containing polyester fibers are used.
- the drying temperature is within the above range, it tends to be possible to suppress a decrease in whiteness due to migration of the dye, and to improve abrasion resistance and adhesion.
- the temperature is preferably 150°C or higher, more preferably 150 to 190°C, and particularly preferably 150 to 180°C.
- the drying temperature is within the above range, the abrasion resistance and adhesion tend to be improved. Further, by setting the temperature to 190° C. or less, it is possible to prevent thermal deterioration of the components contained in the fiber and the pretreatment composition.
- the printed material may be washed with water and dried.
- a soaping treatment that is, a treatment for washing off unfixed pigments with a hot soap solution or the like may be performed.
- the ink ejection reliability is excellent, the pretreatment liquid hardly remains on the fabric, and the ink fixability (adhesion) is good, so that the printed fabric has excellent abrasion resistance.
- Cationic polymer Cationic polymer (a): "DK-6804" manufactured by Seiko PMC (epichlorohydrin-modified polyamine resin, weight average molecular weight: 677, resin content (solid content): 55% by mass)
- (Meth)acrylic acid-based vinyl copolymer (Meth)acrylic acid-based vinyl copolymer (a): “Movinyl 6963” manufactured by Japan Coating Resin Co., Ltd. (anionic styrene/acrylic resin emulsion, solid content: 45% by mass) (Meth)acrylic acid-based vinyl copolymer (b): “Movinyl 6960” manufactured by Japan Coating Resin Co., Ltd. (anionic styrene/acrylic resin emulsion, solid content: 45% by mass) (Meth)acrylic acid-based vinyl copolymer (c): "Movinyl 6751D” manufactured by Japan Coating Resin Co., Ltd.
- Cross-linking agent (a): "Epocross WS-700” manufactured by Nippon Shokubai Co., Ltd. (oxazoline group-containing polymer, solid content 25%)
- Example 1 182 parts by mass of cationic polymer (a) (100 parts by mass as solid content), 66.7 parts by mass (meth)acrylic acid-based vinyl copolymer (a) (30 parts by mass as solid content), and crosslinking agent (a) After mixing 16 parts by mass (4 parts by mass as solid content), water was added so that the solid content by weight was 7 mass %, and mixed uniformly to obtain pretreatment liquid (1) for inkjet textile printing.
- Example 2 Example 1 except that the amount of the (meth)acrylic acid-based vinyl copolymer (a) used in Example 1 was changed from 66.7 parts by mass to 11.1 parts by mass (5 parts by mass as solid content). In the same manner as above, a pretreatment liquid (2) for inkjet textile printing was obtained.
- Example 3 Example 1 except that the amount of the (meth)acrylic acid-based vinyl copolymer (a) used in Example 1 was changed from 66.7 parts by mass to 33.4 parts by mass (15 parts by mass as solid content). In the same manner as above, a pretreatment liquid (3) for inkjet textile printing was obtained.
- Example 4 Same as Example 1 except that the amount of the (meth)acrylic acid-based vinyl copolymer (a) used in Example 1 was changed from 66.7 parts by mass to 133 parts by mass (60 parts by mass as solid content). Then, a pretreatment liquid (4) for inkjet textile printing was obtained.
- Example 5 Same as Example 1 except that the amount of the (meth)acrylic acid-based vinyl copolymer (a) used in Example 1 was changed from 66.7 parts by mass to 200 parts by mass (90 parts by mass as solid content). Then, a pretreatment liquid (5) for inkjet textile printing was obtained.
- Example 6 In the same manner as in Example 1, except that the cationic polymer (a) used in Example 1 was changed to 182 parts by mass of the cationic polymer (b) (100 parts by mass as solid content), a pretreatment liquid for inkjet textile printing ( 6) was obtained.
- Example 7 Except for changing the (meth)acrylic acid-based vinyl copolymer (a) used in Example 1 to 66.7 parts by mass (30 parts by mass as solid content) of (meth)acrylic acid-based vinyl copolymer (b) was carried out in the same manner as in Example 1 to obtain a pretreatment liquid (7) for inkjet textile printing.
- Example 8 Except for changing the (meth)acrylic acid-based vinyl copolymer (a) used in Example 1 to 60.0 parts by mass (30 parts by mass as solid content) of (meth)acrylic acid-based vinyl copolymer (c) was carried out in the same manner as in Example 1 to obtain a pretreatment liquid (8) for inkjet textile printing.
- Example 9 Except that the (meth)acrylic acid-based vinyl copolymer (a) used in Example 1 was changed to (meth)acrylic acid-based vinyl copolymer (d) of 66.7 parts by mass (30 parts by mass as solid content). was carried out in the same manner as in Example 1 to obtain a pretreatment liquid (9) for inkjet textile printing.
- Example 10 Except that the (meth)acrylic acid-based vinyl copolymer (a) used in Example 1 was changed to (meth)acrylic acid-based vinyl copolymer (e) of 66.7 parts by mass (30 parts by mass as solid content). was carried out in the same manner as in Example 1 to obtain a pretreatment liquid (10) for inkjet textile printing.
- Example 11 Inkjet textile printing pretreatment liquid (11 ).
- Example 12 Inkjet textile printing pretreatment liquid (12 ).
- Example 13 In the same manner as in Example 1, except that the amount of the cross-linking agent (a) used in Example 1 was changed from 16 parts by mass (4 parts by mass as solid content) to 8 parts by mass (2 parts by mass as solid content). , to obtain a pretreatment liquid (13) for inkjet textile printing.
- Example 14 In the same manner as in Example 1, except that the amount of the cross-linking agent (a) used in Example 1 was changed from 16 parts by mass (4 parts by mass as solid content) to 28 parts by mass (7 parts by mass as solid content). , to obtain a pretreatment liquid (14) for inkjet textile printing.
- Example 15 In the same manner as in Example 1, except that the amount of the cross-linking agent (a) used in Example 1 was changed from 16 parts by mass (4 parts by mass as solid content) to 40 parts by mass (10 parts by mass as solid content). , to obtain a pretreatment liquid (15) for inkjet textile printing.
- Example 16 In the same manner as in Example 1, except that the amount of the cross-linking agent (a) used in Example 1 was changed from 16 parts by mass (4 parts by mass as solid content) to 80 parts by mass (20 parts by mass as solid content). , to obtain a pretreatment liquid (16) for inkjet textile printing.
- Example 17 A pretreatment liquid (17) for inkjet textile printing was obtained in the same manner as in Example 1, except that the amount of water added was adjusted to change the weight solid content from 7% by mass to 2% by mass.
- Example 18 A pretreatment liquid (18) for inkjet textile printing was obtained in the same manner as in Example 1, except that the amount of water added was adjusted to change the weight solid content from 7% by mass to 4% by mass.
- Example 19 A pretreatment liquid (19) for inkjet textile printing was obtained in the same manner as in Example 1, except that the amount of water added was adjusted to change the weight solid content from 7% by mass to 10% by mass.
- Example 20 A pretreatment liquid for inkjet textile printing (20) was obtained in the same manner as in Example 1, except that the amount of water added was adjusted to change the weight solid content from 7% by mass to 20% by mass.
- Example 21 A pretreatment liquid for inkjet textile printing (21) was obtained in the same manner as in Example 1, except that the amount of water added was adjusted to change the weight solid content from 7% by mass to 30% by mass.
- Example 22 A pretreatment liquid for inkjet printing (22) was obtained in the same manner as in Example 1, except that 10 parts by mass of 1,2-hexanediol was added as an aqueous solvent.
- the dynamic surface tension was 55 mN/m.
- the dynamic surface tension was measured at 10 Hz using a commercially available bubble pressure type dynamic surface tension meter "SITA Science line T-60".
- Example 23 A pretreatment liquid for inkjet printing (23) was obtained in the same manner as in Example 1, except that 50 parts by mass of 1,2-hexanediol was added as an aqueous solvent.
- the dynamic surface tension was 40 mN/m.
- the conditions for measuring the dynamic surface tension were the same as in Example 22.
- Example 1 A pretreatment liquid for inkjet textile printing (24) was obtained in the same manner as in Example 1, except that the (meth)acrylic acid-based vinyl copolymer (a) used in Example 1 was not added.
- Example 2 Same as Example 1 except that the amount of the (meth)acrylic acid-based vinyl copolymer (a) used in Example 1 was changed from 66.7 parts by mass to 335 parts by mass (150 parts by mass as solid content). to obtain a pretreatment liquid (25) for inkjet textile printing.
- Example 3 Same as Example 1 except that the amount of the (meth)acrylic acid-based vinyl copolymer (a) used in Example 1 was changed from 66.7 parts by mass to 446 parts by mass (200 parts by mass as solid content). Then, a pretreatment liquid (26) for inkjet textile printing was obtained.
- Example 4 Same as Example 1 except that the amount of the (meth)acrylic acid-based vinyl copolymer (a) used in Example 1 was changed from 66.7 parts by mass to 669 parts by mass (300 parts by mass as solid content). Then, a pretreatment liquid (27) for inkjet textile printing was obtained.
- Example 5 A pretreatment liquid for inkjet textile printing (28) was obtained in the same manner as in Example 1, except that the cross-linking agent (a) used in Example 1 was not added.
- Example 6 In the same manner as in Example 1, except that the amount of the cross-linking agent (a) used in Example 1 was changed from 16 parts by mass (4 parts by mass as solid content) to 4 parts by mass (1 part by mass as solid content). , to obtain a pretreatment liquid (29) for inkjet textile printing.
- Example 7 In the same manner as in Example 1, except that the amount of the cross-linking agent (a) used in Example 1 was changed from 16 parts by mass (4 parts by mass as solid content) to 100 parts by mass (30 parts by mass as solid content). , to obtain a pretreatment liquid (30) for inkjet textile printing.
- Example 8 A pretreatment liquid for inkjet textile printing (31) was obtained in the same manner as in Example 1, except that the amount of water added was adjusted to change the weight solid content from 7% by mass to 40% by mass.
- FUJI SP SAMPLE 138 solid content 50%, manufactured by Fuji Pigment Co., Ltd.
- Hydran WLS-201 manufactured by DIC Corporation
- PROXEL GXL manufactured by Lonza Co., Ltd.
- Olfine EXP-4001 manufactured by Nissin Chemical Industry Co., Ltd. was used as a surfactant.
- Table 1 The numerical values in Table 1 below represent "parts", and "TEA" represents triethanolamine.
- the inkjet textile printing ink (ink 1) prepared as described above was filled in an industrial inkjet evaluation device (extended coating device EV2500: manufactured by Ricoh Co., Ltd.). After that, the inkjet textile printing ink (ink 1) was applied to the pretreated fabric ( It was deposited over a portion of the surface area from 1 mf) to (31 mf) to form a white solid pattern image. Subsequently, using a desktop automatic flat press (manufactured by Asahi Textile Machinery Co., Ltd.: AF-65TEN), heat drying was performed at 175° C. for 60 seconds to obtain white printed fabrics (1nf) to (31nf). Note that the pretreatment process and the recording process were performed at room temperature of 25°C.
- the pretreatment liquids of Examples show at least the same or better results than the pretreatment liquids of Comparative Examples in terms of water resistance, and also exhibit high color developability and trace-removal resistance. I found out. In addition, all of the color developability, trace residue, storage stability, and water resistance were evaluated as B or higher. Therefore, it can be seen that the pretreatment liquids of the examples are highly practical pretreatment liquids having color developability, trace-residue prevention properties, storage stability, and water resistance.
- the pretreatment liquid for inkjet textile printing of the present invention exhibits good color developability in the inkjet textile printing process, while hardly leaving traces on the fabric when the treatment liquid is applied, and has excellent storage stability of the treatment liquid. Due to its excellent washing fastness, it is extremely useful as a pretreatment liquid for textile printing.
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Abstract
Description
インクジェット捺染に用いる着色剤として、水溶性の染料が挙げられる。そのような染料は、色相が鮮明で、再現できる色域も広い。その反面、水溶性の染料は耐光性が低く、繊維に染料を付着させた後の定着、及び水洗等の工程、さらには水洗等により生じる染料廃液の処理等が煩雑という欠点を有する。このため、水溶性の染料の代わりに、水不溶性の着色剤の使用が注目されている。水不溶性の着色剤を用いるインクジェット捺染では、布帛上での「にじみ」が問題とされている。「にじみ」によって着色剤が本来の着色域に留まらず布帛中で拡散することにより、印刷画像が不鮮明化するとともに、発色性の低下が引き起こされるため、「にじみ」を抑え発色性を向上させる前処理剤が求められている。
1)
水と、カチオン性ポリマー(A)を100質量部、(メタ)アクリル酸系ビニル共重合ポリマー(B)を5質量部以上かつ100質量部未満、及び架橋剤(C)を2質量部以上かつ30質量部未満、の各固形分割合で含有し、かつ、液中の重量固形分が2質量%以上かつ30質量%以下である、インクジェット捺染用前処理液。
2)
上記架橋剤(C)が、ブロック型イソシアネート基を有する化合物、オキサゾリン基を有する化合物、カルボジイミド基を有する化合物からなる群から選択されるいずれか化合物を含む、1)に記載のインクジェット捺染用前処理液。
3)
上記カチオン性ポリマー(A)が、エピハロヒドリン構造単位を含む化合物である、1)又は2)に記載のインクジェット捺染用前処理液。
4)
上記カチオン性ポリマー(A)が、エピハロヒドリン変性ポリアミン樹脂、エピハロヒドリン変性ポリアミド樹脂、エピハロヒドリン変性ポリアミドポリアミン樹脂、エピハロヒドリン-アミン共重合体からなる群から選択されるいずれか樹脂を含む、1)~3)のいずれか一項に記載のインクジェット捺染用前処理液。
5)
上記(メタ)アクリル酸系ビニル共重合ポリマー(B)が、(メタ)アクリル酸アルキル(b1)、カルボキシ基を有するモノマー(b2)及びスチレン誘導体(b3)をモノマー成分とした共重合ポリマーを含む、1)~4)のいずれか一項に記載のインクジェット捺染用前処理液。
6)
25℃での動的表面張力値が40mN/m以上70mN/m以下である、1)~5)のいずれか一項に記載のインクジェット捺染用前処理液。
7)
1)~6)のいずれか一項に記載のインクジェット捺染用前処理液を布帛に塗布後、顔料及び水を含むインクジェット捺染用インクを、インクジェットヘッドより吐出して、布帛に画像を記録する捺染方法。
8)
1)~6)のいずれか一項に記載のインクジェット捺染用前処理液を布帛に塗布し、湿潤したプレコート層を形成する前処理工程と、該前処理工程後に上記布帛を乾燥することなく、上記湿潤したプレコート層の一部又は全部の領域に、顔料及び水を含むインクジェット捺染用インクを、インクジェットヘッドより吐出して、布帛に画像を記録する工程と、を有し、上記布帛におけるインクジェット捺染用前処理液の単位面積当たりの塗布量が0.035g/cm2を超え、かつ、0.070g/cm2未満である捺染方法。
9)
上記布帛が、ポリエステル、又は、ポリエステルを含む混紡である、7)又は8)に記載の捺染方法。
10)
上記顔料及び水を含むインクジェット捺染用インクを、インクジェットヘッドより吐出して、布帛に画像を記録する工程後、画像を形成した布帛を130℃以下で乾燥する工程を含む、9)に記載の捺染方法。
11)
上記布帛が、綿、又は綿を含む混紡である、7)又は8)に記載の捺染方法。
12)
上記前処理工程後、上記湿潤したプレコート層を形成した領域に圧力を加える加圧工程を有する、8)~11)のいずれか一項に記載の捺染方法。
13)
1)~6)のいずれか一項に記載のインクジェット捺染用前処理液と、顔料及び水を含むインクジェット捺染用インクと、を含む、インクジェット捺染用インクセット。
上記のインクジェット捺染用前処理液(以下、「前処理液」と略記する場合がある。)は、少なくとも水と、カチオン性ポリマーと、(メタ)アクリル酸系ビニル共重合ポリマーと、架橋剤と、を含有する。
上記前処理液は水を含有する。水としては、特に制限されることなく、イオン交換水、限外濾過水、逆浸透水、蒸留水等の純水、又は超純水を用いることができる。水の含有量は、特に制限されることなく必要に応じて適宜決定すればよいが、前処理液の重量固形分を好適な範囲に調整するため、前処理液の総質量(100質量%)に対して70~80質量%含まれていることが好ましい。
上記前処理液は、カチオン性ポリマー(A)を含む。該カチオン性ポリマー(A)を含むことにより、後述するインクジェット捺染用インク中の樹脂で被覆された着色剤の凝集性が向上する。本明細書中、カチオン性ポリマー(A)を「カチオン性ポリマー」と略記する場合がある。
上記カチオン性ポリマーの重量平均分子量は、ゲル浸透クロマトグラフィー(GPC)法を用いて、標準ポリスチレン換算によって測定することが可能である。
上記前処理液は、(メタ)アクリル酸系ビニル共重合ポリマー(B)を含有する。(メタ)アクリル酸系ビニル共重合ポリマーを含む前処理液を布帛上に塗布することにより、布帛表面を平滑化させることで印捺時の発色性が向上するとともに、後述する架橋剤と併用することで印捺布帛の耐水性を向上させる。本明細書中、(メタ)アクリル酸系ビニル共重合ポリマー(B)を「(メタ)アクリル酸系ビニル共重合ポリマー」と略記する場合がある。
また、上記(メタ)アクリル酸系ビニル共重合ポリマーは、(メタ)アクリル酸および(メタ)アクリル酸エステル以外のモノマー成分を含んでいてもよく、特にスチレン誘導体をモノマー成分として含むことが好ましい。スチレン誘導体の例としては、スチレン、アルキル置換スチレン(例え、α-メチルスチレン等)、ハロゲン置換スチレン(例えば2-クロロスチレン等)等が挙げられる。
なお、(メタ)アクリル酸系ビニル共重合ポリマーの量は、固形分換算の量(即ち樹脂のみの量)であり、以下も同様である。
さらに、布帛に捺染した後の着色画像の耐擦性を良好にする目的としては、D50の下限値を100nm程度にするのが好ましい。
上記前処理液は、架橋剤を含有する。架橋剤としては、ブロック型イソシアネート基を有する化合物、エポキシ基を有する化合物、オキサゾリン基を有する化合物、カルボジイミド基を有する化合物、メチロール基を有する化合物、シクロカーボネート基を有する化合物、アジリニル基を有する化合物、アセトアセチル基を有する化合物、シラノール基を有する化合物などが挙げられる。これらは、1種単独で使用してもよいし、2種以上を併用してもよい。これらの中でも、カルボジイミド基を有する化合物、オキサゾリン基を有する化合物、ブロック型イソシアネート基を有する化合物、エポキシ基を含有する化合物が、耐水性向上の点から好ましく、ブロック型イソシアネート基を有する化合物、オキサゾリン基を有する化合物、カルボジイミド基を有する化合物からなる群から選択されるいずれか化合物を含むことがさらに好ましい。また、水溶性化合物であっても、水分散性化合物であってもよいが、保存安定性の観点から水分散性化合物であることが好ましい。
なお、上記前処理液中のカチオン性ポリマー(A)と(メタ)アクリル酸系ビニル共重合ポリマー(B)の割合において、カチオン性ポリマー(A)が多く存在する場合は着色剤を凝集させる作用が大きく、布帛中へのインクの浸透・拡散を防ぐことで布帛表面での発色性を向上させる効果が、また、カチオン性ポリマー(A)に比べ(メタ)アクリル酸系ビニル共重合ポリマー(B)の造膜性が高いことから、(B)の配合割合を少なくすることで、布帛での跡残り低減効果が、それぞれ得られるものと推測する。また、架橋剤(C)の配合割合が大きい場合は、後述する跡残りが増大することから、上記割合で用いることで上述の耐水性と跡残り低減効果の両方の効果が発揮されると考える。
上記前処理液は、水性溶媒、表面張力調整剤、粘度調整剤、防黴剤、防腐剤、pH調整剤、キレート化剤、防錆剤、紫外線吸収剤、酸化防止剤などの、種々の添加剤を、前処理液の保存安定性、目詰まり改善、布帛繊維の劣化を防止するため等の目的に応じ、適宜添加することができる。
上記前処理液は、その他の成分として水性溶媒を含み得る。水性溶媒としては特に限定されないが、浸透剤、あるいは保湿剤としての機能を有する水性溶媒であることが好ましい。水性溶媒は1種を単独で用いてもよく、2種以上を組み合わせて用いてもよい。
上記前処理液は、上記水性溶媒として浸透剤を含んでもよい。浸透剤を含むことにより、前処理液の浸透性が向上することにより、前処理液が布帛に素早く浸透し、処理跡の低減効果を得ることができる。
上記前処理液は、上記水性溶媒として上記浸透剤以外として保湿剤(湿潤剤)を含んでもよい。該保湿剤としては、一般にインクジェットインクに用いられるものであれば特に制限されることなく使用可能である。好ましくは180℃以上、より好ましくは200℃以上の沸点を有する高沸点の保湿剤を用いるとよい。沸点が上記範囲内である場合、前処理液に良好な保水性及び湿潤性を付与することができる。
上記前処理液は、その他の成分として表面張力調整剤を含み得る。処理液の静的表面張力、動的表面張力を調節する機能を有するものであれば該表面張力調整剤の種類は特に限定されないが、該表面張力調整剤としては、例えば、アセチレングリコール界面活性剤、及びポリアルキレングリコール界面活性剤から選択される界面活性剤であることが好ましい。表面張力調整剤を含有することにより、前処理液の粘度の増加、気液界面における成分の凝集等が抑制され、保存安定性がさらに良好となる。
その市販品の例としては、例えば、第一工業製薬株式会社製のノイゲン XL-40、50、60、70、80、100、140、160、ノイゲン TDS-30、50、70、80、90、100、120等が挙げられる。
上記脂肪酸エチレンオキシド付加物としては、ステアリン酸エチレンオキシド付加物、ポリエチレングリコールラウリン酸エステル等が挙げられる。その市販品の例としては、例えば、花王株式会社製のエマノーン 1112、3199V、3299V、3299VR、3201M-V等が挙げられる。
上記高級アルキルアミンエチレンオキシド付加物の市販品の例としては、例えば、花王株式会社製のアミート 102、105、105A、302、320等が挙げられる。
上記ポリオキシアルキレンポリオキシアルキレングリコールの市販品の例としては、例えば、花王株式会社製のエマルゲン PP-290(ポリエチレングリコール/ポリプロピレングリコールが160/30のコポリマー);三洋化成工業株式会社製のニューポールPE-61、PE-62、PE-64、PE-68、PE-71、PE-74、PE-75、PE-78、PE-108(ポリオキシエチレンポリオキシプロピレン ブロックポリマー);第一工業製薬株式会社製のエパン 410、420、450、485、680、710、720、740、750、785、U-103、U-105、U-108(ポリプロピレングリコールの重量平均分子量が約950~4000、ポリオキシエチレンの含有量が5~95%程度のポリオキシエチレンポリオキシプロピレングリコール)等が挙げられる。
上記前処理液は、その他の成分として粘度調整剤を含み得る。該粘度調整剤としては、例えば、トウモロコシ及び小麦などのデンプン;カルボキシメチルセルロース及びヒドロキシメチルセルロース等のセルロース化合物;アルギン酸ナトリウム、アラビヤゴム、ローカストビーンガム、トラントガム、グアーガム、及びタマリンド種子等の多糖類、ゼラチン及びカゼイン等のタンパク質;タンニン及びリグニン等の天然水溶性高分子;及びポリビニルアルコール、ポリエチレンオキサイド、アクリル酸、及び無水マレイン酸等を含有する、合成の水溶性高分子化合物等が挙げられる。粘度調整剤の含有量は、前処理液の総質量に対して、通常20%以下程度である。
上記前処理液は、その他の成分として防黴剤を含み得る。該防黴剤の具体例としては、デヒドロ酢酸ナトリウム、安息香酸ナトリウム、ナトリウムピリジンチオン-1-オキシド、p-ヒドロキシ安息香酸エチルエステル、1,2-ベンズイソチアゾリン-3-オン及びその塩等が挙げられる。
上記前処理液は、その他の成分として防腐剤を含み得る。該防腐剤の例としては、例えば、有機硫黄系、有機窒素硫黄系、有機ハロゲン系、ハロアリールスルホン系、ヨードプロパギル系、ハロアルキルチオ系、ニトリル系、ピリジン系、8-オキシキノリン系、ベンゾチアゾール系、イソチアゾリン系、ジチオール系、ピリジンオキシド系、ニトロプロパン系、有機スズ系、フェノール系、第4アンモニウム塩系、トリアジン系、チアジン系、アニリド系、アダマンタン系、ジチオカーバメイト系、ブロム化インダノン系、ベンジルブロムアセテート系、無機塩系等の化合物が挙げられる。有機ハロゲン系化合物の具体例としては、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の具体例としては、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の具体例としては、例えば、1,2-ベンズイソチアゾリン-3-オン、2-n-オクチル-4-イソチアゾリン-3-オン、5-クロロ-2-メチル-4-イソチアゾリン-3-オン、5-クロロ-2-メチル-4-イソチアゾリン-3-オンマグネシウムクロライド、5-クロロ-2-メチル-4-イソチアゾリン-3-オンカルシウムクロライド、2-メチル-4-イソチアゾリン-3-オンカルシウムクロライド等が挙げられる。その他の防腐剤(防腐防黴剤)の具体例としては、無水酢酸ナトリウム、ソルビン酸ナトリウム、安息香酸ナトリウム、Lonza社製、商品名プロクセルGXL(S)やプロクセルXL-2(S)等が挙げられる。
上記前処理液は、その他の成分としてpH調整剤を含み得る。該pH調整剤としては、調製される前処理液に悪影響を及ぼさずに、前処理液のpHを例えば4~11の範囲に制御できるものであれば任意の物質を使用することができる。具体例としては、例えば、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等や、トリエタノールアミン、ジエタノールアミン等の有機アミノ化合物が挙げられる。上記粘度調整剤を兼ねて水溶性ポリアミン、ポリイミン等の水溶性高分子アミノ化合物を用いてもよい。
上記前処理液は、その他の成分としてキレート化剤を含み得る。該キレート化剤の具体例としては、例えば、エチレンジアミン四酢酸二ナトリウム、ニトリロ三酢酸ナトリウム、ヒドロキシエチルエチレンジアミン三酢酸ナトリウム、ジエチレントリアミン五酢酸ナトリウム、ウラシル二酢酸ナトリウム等が挙げられる。
上記前処理液は、その他の成分として防錆剤を含み得る。該防錆剤の具体例としては、例えば、酸性亜硫酸塩、チオ硫酸ナトリウム、チオグリコール酸アンモニウム、ジイソプロピルアンモニウムナイトライト、四硝酸ペンタエリスリトール、ジシクロヘキシルアンモニウムナイトライト等が挙げられる。
上記前処理液は、その他の成分として紫外線吸収剤(特には、水溶性紫外線吸収剤)を含み得る。該水溶性紫外線吸収剤の具体例としては、例えば、スルホ化したベンゾフェノン系化合物、ベンゾトリアゾール系化合物、サリチル酸系化合物、桂皮酸系化合物、又はトリアジン系化合物が挙げられる。
上記前処理液は、その他の成分として酸化防止剤を含み得る。該酸化防止剤としては、例えば、各種の有機系及び金属錯体系の酸化防止剤(「褪色防止剤」とも呼ぶ。)を使用することができる。上記有機系の酸化防止剤の具体例としては、ハイドロキノン類、アルコキシフェノール類、ジアルコキシフェノール類、フェノール類、アニリン類、アミン類、インダン類、クロマン類、アルコキシアニリン類、複素環類等が挙げられる。
また、上記した全ての事項について、好ましいもの同士の組み合わせはより好ましく、より好ましいもの同士の組み合わせはさらに好ましい。好ましいものとより好ましいもの等との組み合わせについても同様である。
上記前処理液は、例えば、次のようにして調製することができる。水、カチオン性ポリマー、アクリル酸系ビニル共重合ポリマー、架橋剤、及び、必要に応じて上記で挙げたような調製剤をさらに加え、撹拌・混合した後、必要に応じて濾過する方法が挙げられる。ただし本発明の前処理液の調製方法は上記に限定されるものではない。
上記インクジェット捺染用インクは、顔料及び水を含む。水は、上記インクジェット捺染用前処理液の項で述べたものと同じで良い。本明細書中、インクジェット捺染用インクをインク組成物あるいはインクと略記する場合がある。
上記の顔料としては、特に限定されるものではなく、公知の顔料が使用できる。顔料としては、無機顔料、有機顔料、体質顔料等が知られている。
カーボンブラックの具体例としては、例えば、Raven 760 ULTRA、Raven 780 ULTRA、Raven 790 ULTRA、Raven 1060 ULTRA、Raven 1080 ULTRA、Raven 1170、Raven 1190 ULTRA II、Raven 1200、Raven 1250、Raven 1255、Raven 1500、Raven 2000、Raven 2500 ULTRA、Raven 3500、Raven 5000 ULTRA II、Raven 5250、Raven 5750、Raven 7000(以上、コロンビア・カーボン社製);Monarch 700、Monarch 800、Monarch 880、Monarch 900、Monarch 1000、Monarch 1100、Monarch 1300、Monarch 1400、Regal 1330R、Regal 1400 R、Regal 1660 R、Mogul L(以上、キャボット社製);Color Black FW1、Color Black FW2、Color Black FW2 V、Color Black FW 200、Color Black S 150、Color Black S 160、Color Black S 170、Printex 35、Printex U、Printex V、Printex 140 U、Printex 140 V、Special Black 4、Special Black 4A、Special Black 5、Special Black 6(以上、デグサ社製);MA 7、MA 8、MA 100、MA 600、MCF-88、No.25、No.33、No.40、No.47、No.52、No.900、No.2300(以上、三菱化学社製);等が挙げられる。
上記インクジェット捺染用インクは、その保存安定性及びヘッドからの吐出信頼性を良好に維持するため、目詰まり改善のため、又はインクの劣化を防止する目的等のため、上記顔料及び水以外に、その他成分として、例えば、樹脂エマルション、水性溶媒、界面活性剤、粘度調整剤、防黴剤、防腐剤、pH調整剤、キレート化剤、防錆剤、紫外線吸収剤、酸化防止剤などの、種々の添加剤をさらに添加することもできる。樹脂エマルション、界面活性剤以外の各添加剤の詳細はインクジェット捺染用前処理液において説明した事項と同様であるため、ここでの説明を省略する。
樹脂エマルションとしては、例えば、スチレン-ブタジエン樹脂、アクリル樹脂、エポキシ樹脂、ウレタン樹脂、ポリエーテル樹脂、ポリアミド樹脂、不飽和ポリエステル樹脂、フェノール樹脂、シリコーン樹脂、フッ素樹脂、ポリビニル樹脂(ポリ塩化ビニル、ポリ酢酸ビニル、ポリビニルアルコール等)、アルキド樹脂、ポリエステル樹脂、アミノ樹脂(メラニン樹脂、ユリア樹脂、尿素樹脂、メラニンホルムアルデヒド樹脂等)等から形成されたエマルションを挙げることができる。樹脂エマルションは、2種類以上の樹脂を含んでいてもよい。また、2種類以上の樹脂がコア/シェル構造を形成していてもよい。樹脂エマルションは、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。樹脂エマルションの中でも、インク性能の観点から、スチレン-ブタジエン樹脂エマルション、ウレタン樹脂エマルションが好ましい。
上記インク組成物が含む界面活性剤としては、アニオン系、カチオン系、ノニオン系、両性、シリコーン系、フッ素系等の公知の界面活性剤が挙げられる。アニオン界面活性剤としては、アルキルスルホン酸塩、アルキルカルボン酸塩、α-オレフィンスルホン酸塩、ポリオキシエチレンアルキルエーテル酢酸塩、N-アシルアミノ酸及びその塩、N-アシルメチルタウリン塩、アルキル硫酸塩ポリオキシアルキルエーテル硫酸塩、アルキル硫酸塩ポリオキシエチレンアルキルエーテル燐酸塩、ロジン酸石鹸、ヒマシ油硫酸エステル塩、ラウリルアルコール硫酸エステル塩、アルキルフェノール型燐酸エステル、アルキル型燐酸エステル、アルキルアリールスルホン酸塩、ジエチルスルホ琥珀酸塩、ジエチルヘキルシルスルホ琥珀酸塩、ジオクチルスルホ琥珀酸塩等が挙げられる。その市販品の具体例としては、例えば、いずれも第一工業製薬社製のハイテノールLA-10、LA-12、LA-16、ネオハイテノールECL-30S、ECL-45などが挙げられる。カチオン界面活性剤としては、2-ビニルピリジン誘導体、ポリ4-ビニルピリジン誘導体等が挙げられる。ノニオン界面活性剤としては、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;日信化学社製、商品名サーフィノール104、105、82、465、オルフィンSTG等;ポリグリコールエーテル系(例えばSIGMA-ALDRICH社製のTergitol 15-S-7等);等が挙げられる。両性界面活性剤としては、ラウリルジメチルアミノ酢酸ベタイン、2-アルキル-N-カルボキシメチル-N-ヒドロキシエチルイミダゾリニウムベタイン、ヤシ油脂肪酸アミドプロピルジメチルアミノ酢酸ベタイン、ポリオクチルポリアミノエチルグリシン、イミダゾリン誘導体等が挙げられる。シリコーン系界面活性剤としては、例えば、ポリエーテル変性シロキサン、ポリエーテル変性ポリジメチルシロキサン等が挙げられる。市販品の具体例としては、例えば、いずれもビックケミー社製の、BYK-347(ポリエーテル変性シロキサン);BYK-345、BYK-348(ポリエーテル変性ポリジメチルシロキサン)等が挙げられる。フッ素系界面活性剤としては、例えば、パーフルオロアルキルスルホン酸化合物、パーフルオロアルキルカルボン酸系化合物、パーフルオロアルキルリン酸エステル化合物、パーフルオロアルキルエチレンオキサイド付加物、及びパーフルオロアルキルエーテル基を側鎖に有するポリオキシアルキレンエーテルポリマー化合物等が挙げられる。市販品の具体例としては、例えば、Zonyl TBS、FSP、FSA、FSN-100、FSN、FSO-100、FSO、FS-300、Capstone FS-30、FS-31(DuPont社製);PF-151N、PF-154N(オムノバ社製)等が挙げられる。
上記インクジェット捺染用前処理液と、顔料及び水を含むインクジェット捺染用インクと、を含む、インクジェット捺染用インクセットも本願発明に含まれる。
上記前処理液を用いたインクジェット捺染方法も本願発明に含まれる。当該インクジェット捺染方法は、上記実施形態のインクジェット捺染用インクセットを用いたインクジェット捺染により、布帛に画像を形成することを含むものである。より具体的には、上記のインクジェット捺染方法は、上記実施形態のインクジェット捺染用前処理液を布帛に付与する前処理工程と、上記実施形態におけるインクジェット捺染用インク組成物を当該前処理工程後の布帛に付着させて画像を形成する画像形成工程と、を含むことが好ましい。また、当該画像形成工程は、例えば、インク組成物を布帛に付着させる付着工程と、当該インク組成物が付着した布帛を加熱する加熱工程と、を含むものである。
布帛(の表面)でインクが滲むのを防止するため、上述のインク組成物を布帛に付着させて画像を形成する前に、上記前処理液を用いて布帛を前処理しておくこと、即ち前処理工程が行われる。当該前処理工程は、上記実施形態の前処理液を布帛に付与するというものであり、前処理液を付着させた後、布帛を乾燥させてもよく、乾燥させずに布帛上に前処理液で湿潤したプレコート層を形成してもよい。
前処理液の塗布量が0.035g/cm2を超えることにより、ポリエステル繊維(スポーツウェア等に使用されるメッシュ生地)や生地の薄い繊維、編み目の粗い繊維等を用いる場合に、インクジェット方式で吐出したインク液滴が、繊維の捺染を行っていない反対側の面に浸透しやすい(貫通しやすい)布帛に対して、インクの裏抜けを抑制することができ、発色性の高い画像が得られる傾向にある。また、前処理液の塗布量が0.070g/cm2未満であることにより、前処理液を付与した処理跡が残るのを抑制できる傾向にある。
上記画像形成工程に含みうる上記付着工程では、まず、上記前処理がなされた布帛に向けて、上記インク組成物を吐出し付着させて、画像を形成(記録)する。
なお、吐出条件は、吐出されるインク組成物の物性によって適宜決定すればよい。
下記の実施例及び比較例において使用した前処理液の主な材料は、以下の通りである。
カチオン性ポリマー(a):星光PMC社製「DK-6804」(エピクロロヒドリン変性ポリアミン樹脂、重量平均分子量:677、樹脂分(固形分):55質量%)
カチオン性ポリマー(b):星光PMC社製「DK-6810」(エピクロロヒドリン変性ポリアミン樹脂、重量平均分子量:616、樹脂分(固形分):55質量%)
(メタ)アクリル酸系ビニル共重合ポリマー(a):ジャパンコーティングレジン社製「モビニール6963」(アニオン性スチレン/アクリル系樹脂エマルジョン、固形分45質量%)
(メタ)アクリル酸系ビニル共重合ポリマー(b):ジャパンコーティングレジン社製「モビニール6960」(アニオン性スチレン/アクリル系樹脂エマルジョン、固形分45質量%)
(メタ)アクリル酸系ビニル共重合ポリマー(c):ジャパンコーティングレジン社製「モビニール6751D」(アニオン性アクリル系樹脂エマルジョン、固形分45質量%)
(メタ)アクリル酸系ビニル共重合ポリマー(d):ジャパンコーティングレジン社製「モビニール6901」(カチオン性スチレン/アクリル系樹脂エマルジョン、固形分45質量%)
(メタ)アクリル酸系ビニル共重合ポリマー(e):ジャパンコーティングレジン社製「モビニール6951」(カチオン性アクリル系樹脂エマルジョン、固形分45質量%)
架橋剤(a):日本触媒社製「エポクロスWS-700」(オキサゾリン基含有ポリマー、固形分25%)
架橋剤(b):日清紡ケミカル社製「カルボジライトE-02」(カルボジイミド基含有ポリマー、固形分40%)
架橋剤(c):明成化学工業社製「メイカネートNBP-211」(ブロック型イソシアネート基含有ポリマー、固形分40%)
酢酸(500mM)とNa2NO3(200mM)の水溶液を展開溶媒としたゲル浸透クロマトグラフィー法〔東ソー株式会社製GPC装置(HLC-8320GPC EcoSEC)、東ソー株式会社製カラム(TSKgel Super AW4000、TSKgel Super AW3000×2本を連結)、流速:0.6mL/min〕により、標準物質としてポリスチレンを用いて測定した。
カチオン性ポリマー(a)182質量部(固形分として100質量部)、(メタ)アクリル酸系ビニル共重合ポリマー(a)66.7質量部(固形分として30質量部)及び架橋剤(a)16質量部(固形分として4質量部)を混合した後、重量固形分が7質量%となるように水を加えて均一に混合して、インクジェット捺染用前処理液(1)を得た。
実施例1で用いた(メタ)アクリル酸系ビニル共重合ポリマー(a)の配合量を66.7質量部から11.1質量部(固形分として5質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(2)を得た。
実施例1で用いた(メタ)アクリル酸系ビニル共重合ポリマー(a)の配合量を66.7質量部から33.4質量部(固形分として15質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(3)を得た。
実施例1で用いた(メタ)アクリル酸系ビニル共重合ポリマー(a)の配合量を66.7質量部から133質量部(固形分として60質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(4)を得た。
実施例1で用いた(メタ)アクリル酸系ビニル共重合ポリマー(a)の配合量を66.7質量部から200質量部(固形分として90質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(5)を得た。
実施例1で用いたカチオン性ポリマー(a)をカチオン性ポリマー(b)182質量部(固形分として100質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(6)を得た。
実施例1で用いた(メタ)アクリル酸系ビニル共重合ポリマー(a)を(メタ)アクリル酸系ビニル共重合ポリマー(b)66.7質量部(固形分として30質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(7)を得た。
実施例1で用いた(メタ)アクリル酸系ビニル共重合ポリマー(a)を(メタ)アクリル酸系ビニル共重合ポリマー(c)60.0質量部(固形分として30質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(8)を得た。
実施例1で用いた(メタ)アクリル酸系ビニル共重合ポリマー(a)を(メタ)アクリル酸系ビニル共重合ポリマー(d)66.7質量部(固形分として30質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(9)を得た。
実施例1で用いた(メタ)アクリル酸系ビニル共重合ポリマー(a)を(メタ)アクリル酸系ビニル共重合ポリマー(e)66.7質量部(固形分として30質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(10)を得た。
実施例1で用いた架橋剤(a)を、架橋剤(b)10質量部(固形分で4質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(11)を得た。
実施例1で用いた架橋剤(a)を、架橋剤(c)10質量部(固形分で4質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(12)を得た。
実施例1で用いた架橋剤(a)の配合量を16質量部(固形分として4質量部)から8質量部(固形分として2質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(13)を得た。
実施例1で用いた架橋剤(a)の配合量を16質量部(固形分として4質量部)から28質量部(固形分として7質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(14)を得た。
実施例1で用いた架橋剤(a)の配合量を16質量部(固形分として4質量部)から40質量部(固形分として10質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(15)を得た。
実施例1で用いた架橋剤(a)の配合量を16質量部(固形分として4質量部)から80質量部(固形分として20質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(16)を得た。
実施例1の加水量を調節して重量固形分を7質量%から2質量%に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(17)を得た。
実施例1の加水量を調節して重量固形分を7質量%から4質量%に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(18)を得た。
実施例1の加水量を調節して重量固形分を7質量%から10質量%に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(19)を得た。
実施例1の加水量を調節して重量固形分を7質量%から20質量%に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(20)を得た。
実施例1の加水量を調節して重量固形分を7質量%から30質量%に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(21)を得た。
実施例1に水性溶媒として、1,2-ヘキサンジオールを10質量部添加した以外は実施例1と同様にして、インクジェット捺染用前処理液(22)を得た。動的表面張力は55mN/mであった。動的表面張力の測定は、市販のバブルプレッシャー式動的表面張力計「SITA Science line T-60」を用いて10Hzにおける動的表面張力を測定した。
実施例1に水性溶媒として、1,2-ヘキサンジオールを50質量部添加した以外は実施例1と同様にして、インクジェット捺染用前処理液(23)を得た。動的表面張力は40mN/mであった。動的表面張力の測定条件は実施例22と同様とした。
実施例1で用いた(メタ)アクリル酸系ビニル共重合ポリマー(a)を添加しないこと以外は実施例1と同様にして、インクジェット捺染用前処理液(24)を得た。
実施例1で用いた(メタ)アクリル酸系ビニル共重合ポリマー(a)の配合量を66.7質量部から335質量部(固形分として150質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(25)を得た。
実施例1で用いた(メタ)アクリル酸系ビニル共重合ポリマー(a)の配合量を66.7質量部から446質量部(固形分として200質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(26)を得た。
実施例1で用いた(メタ)アクリル酸系ビニル共重合ポリマー(a)の配合量を66.7質量部から669質量部(固形分として300質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(27)を得た。
実施例1で用いた架橋剤(a)を添加しない以外は実施例1と同様にして、インクジェット捺染用前処理液(28)を得た。
実施例1で用いた架橋剤(a)の配合量を16質量部(固形分として4質量部)から4質量部(固形分として1質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(29)を得た。
実施例1で用いた架橋剤(a)の配合量を16質量部(固形分として4質量部)から100質量部(固形分として30質量部)に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(30)を得た。
実施例1の加水量を調節して重量固形分を7質量%から40質量%に変更した以外は実施例1と同様にして、インクジェット捺染用前処理液(31)を得た。
下記表1に記載の成分を室温にて1時間撹拌して混合した後、混合物を、孔径5μmのミックスセルロースエステルのフィルター(アドバンテック東洋株式会社製メンブレンフィルター)でろ過した後、真空ポンプを用いて脱気処理することにより、試験用のインク1を得た。また、顔料分散液としてFUJI SP SAMPLE 138(固形分50%、冨士色素株式会社製)、ウレタン樹脂としてハイドランWLS-201(DIC株式会社製)、防腐剤はPROXEL GXL(S)(Lonza株式会社製)、界面活性剤はオルフィンEXP-4001(日信化学工業株式会社製)を使用した。下記表1中の数値は「部」を表し、「TEA」はトリエタノールアミンを表す。
[前処理工程]
上記で得たインクジェット捺染用前処理液(1)~(31)を、それぞれ0.02g/cm2の付着量となるように、綿布帛(Tシャツ、黒色の00085-CVT ヘビーウェイトTシャツ(PrintStar製))に対し、市販の霧吹き(高橋化成株式会社製:PET150B Mミスト)を用いてA4サイズに塗布した。続いて卓上自動平プレス機(アサヒ繊維機械株式会社製:AF-65TEN)を用いて175℃で60秒の加熱乾燥を行い、前処理布帛(1mf)~(31mf)を得た。その後下記記録工程を行った。
上記のようにして調製したインクジェット捺染用インク(インク1)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)に充填した。その後、インク液滴重量29pl/dot、ヘッド温度は25℃、解像度600×1200dpi、6回重ね印刷の条件で、インクジェット捺染用インク(インク1)を、前記のようにして得た前処理布帛(1mf)~(31mf)の表面領域の一部に対し付着させて、白色のベタパターン画像を形成した。続いて卓上自動平プレス機(アサヒ繊維機械株式会社製:AF-65TEN)を用いて175℃で60秒の加熱乾燥を行い、白色の捺染布帛(1nf)~(31nf)を得た。なお、前処理工程及び記録工程は室温25℃で行った。
上記で得られた白色の捺染布帛を、L*値を測色することにより発色性を評価した。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。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3回測色を行い、その平均値を測定結果として下記評価基準により評価した。評価結果を表2~4に示す。L*値は大きい程、高い白色度を示すため好ましい。
(評価基準)
A:L*=92以上
B:L*=90以上92未満
C:L*=90未満
上記で得られた捺染布帛の耐水性を、洗濯堅牢性試験により判定した。洗濯堅牢性試験は、「米国繊維化学技術染色技術協会規格(AATCC)61 2A」に準じて、3回繰り返し行い、下記評価基準により評価した。評価結果を表2~4に示す。
(評価基準)
A:3回繰り返し試験後も脱落無し。
B:3回繰り返し試験後において、僅かに被膜の部分的な脱落が見られる。
C:3回繰り返し試験後において、被膜の脱落があり、下地が目視で視認できる。
インクジェット捺染用前処理液(1)~(31)を用いて前記前処理工程と同様にして前処理布帛を作製した。前処理液付着部(インクは付着していない)と前処理液非付着部(前処理液、インクいずれも付着していない)とを目視で比較し、前処理液付着部における前処理痕跡(白色の跡残り)を確認した。評価結果を表2~4に示す。
(評価基準)
A:白色の跡残り無し。
B:若干白色の跡残りがある。
C:白色の跡残りがかなりある。
上記で得た前処理液(1)~(31)を、市販の8mlガラス製サンプル瓶(日電理科硝子製)に2ml封入し、60℃の条件で1週間保存し、保存後の外観の変化を下記の基準で評価した。評価結果を表2~4に示す。表2~4中、前処理液No.1~31はそれぞれ上記で得た前処理液(1)~(31)を表す。
(評価基準)
A:保存前後で、外観上変化が見られない。
B:保存後、僅かに凝集物が見られるが前処理液の流動性に変化がない。
C:保存後、凝集が著しく、前処理液の流動性が無くなっている。
Claims (13)
- 水と、カチオン性ポリマー(A)を100質量部、(メタ)アクリル酸系ビニル共重合ポリマー(B)を5質量部以上かつ100質量部未満、及び架橋剤(C)を2質量部以上かつ30質量部未満、の各固形分割合で含有し、かつ、液中の重量固形分が2質量%以上かつ30質量%以下である、インクジェット捺染用前処理液。
- 上記架橋剤(C)が、ブロック型イソシアネート基を有する化合物、オキサゾリン基を有する化合物、カルボジイミド基を有する化合物からなる群から選択されるいずれか化合物を含む、請求項1に記載のインクジェット捺染用前処理液。
- 上記カチオン性ポリマー(A)が、エピハロヒドリン構造単位を含む化合物である、請求項1又は2に記載のインクジェット捺染用前処理液。
- 上記カチオン性ポリマー(A)が、エピハロヒドリン変性ポリアミン樹脂、エピハロヒドリン変性ポリアミド樹脂、エピハロヒドリン変性ポリアミドポリアミン樹脂、エピハロヒドリン-アミン共重合体からなる群から選択されるいずれか樹脂を含む、請求項1~3のいずれか一項に記載のインクジェット捺染用前処理液。
- 上記(メタ)アクリル酸系ビニル共重合ポリマー(B)が、(メタ)アクリル酸アルキル(b1)、カルボキシ基を有するモノマー(b2)及びスチレン誘導体(b3)をモノマー成分とした共重合ポリマーを含む、請求項1~4のいずれか一項に記載のインクジェット捺染用前処理液。
- 25℃での動的表面張力値が40mN/m以上70mN/m以下である、請求項1~5のいずれか一項に記載のインクジェット捺染用前処理液。
- 請求項1~6のいずれか一項に記載のインクジェット捺染用前処理液を布帛に塗布後、顔料及び水を含むインクジェット捺染用インクを、インクジェットヘッドより吐出して、布帛に画像を記録する捺染方法。
- 請求項1~6のいずれか一項に記載のインクジェット捺染用前処理液を布帛に塗布し、湿潤したプレコート層を形成する前処理工程と、該前処理工程後に上記布帛を乾燥することなく、上記湿潤したプレコート層の一部又は全部の領域に、顔料及び水を含むインクジェット捺染用インクを、インクジェットヘッドより吐出して、布帛に画像を記録する工程と、を有し、上記布帛におけるインクジェット捺染用前処理液の単位面積当たりの塗布量が0.035g/cm2を超え、かつ、0.070g/cm2未満である捺染方法。
- 上記布帛が、ポリエステル、又は、ポリエステルを含む混紡である、請求項7又は8に記載の捺染方法。
- 上記顔料及び水を含むインクジェット捺染用インクを、インクジェットヘッドより吐出して、布帛に画像を記録する工程後、画像を形成した布帛を130℃以下で乾燥する工程を含む、請求項9に記載の捺染方法。
- 上記布帛が、綿、又は綿を含む混紡である、請求項7又は8に記載の捺染方法。
- 上記前処理工程後、上記湿潤したプレコート層を形成した領域に圧力を加える加圧工程を有する、請求項8~11のいずれか一項に記載の捺染方法。
- 請求項1~6のいずれか一項に記載のインクジェット捺染用前処理液と、顔料及び水を含むインクジェット捺染用インクと、を含む、インクジェット捺染用インクセット。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22763445.8A EP4303006A4 (en) | 2021-03-04 | 2022-03-04 | PRETREATMENT FLUID FOR INKJET PRINTING, INK SET AND PRINTING PROCESS |
| CN202280017472.0A CN116940643A (zh) | 2021-03-04 | 2022-03-04 | 喷墨印染用预处理液、墨液组件以及印染方法 |
| US18/548,570 US20240150605A1 (en) | 2021-03-04 | 2022-03-04 | Pretreatment liquid for inkjet textile printing, ink set, and textile printing method |
| JP2023503985A JPWO2022186395A1 (ja) | 2021-03-04 | 2022-03-04 |
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| JP2021033998 | 2021-03-04 |
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| US (1) | US20240150605A1 (ja) |
| EP (1) | EP4303006A4 (ja) |
| JP (1) | JPWO2022186395A1 (ja) |
| CN (1) | CN116940643A (ja) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023114574A1 (en) * | 2021-12-14 | 2023-06-22 | Dupont Electronics, Inc. | Inkjet ink and primer fluid set |
| WO2024200070A1 (en) * | 2023-03-24 | 2024-10-03 | Agfa Nv | Aqueous ink set for inkjet recording |
| EP4495320A1 (en) * | 2023-07-19 | 2025-01-22 | Konica Minolta, Inc. | Ink set and inkjet recording method |
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| WO2008018406A1 (fr) * | 2006-08-11 | 2008-02-14 | Dic Corporation | Agent destiné à conférer une réceptivité à l'encre de jet d'encre à un tissu et tissu traité par cet agent |
| JP2019131919A (ja) * | 2018-01-31 | 2019-08-08 | セイコーエプソン株式会社 | インクジェット顔料捺染用処理液組成物、インクジェット顔料捺染用処理液組成物セット及びインクジェット顔料捺染方法 |
| US20190257030A1 (en) * | 2018-02-20 | 2019-08-22 | Eastern Tech Llc | Pretreatment for application onto finished cotton fabric |
| JP2019157071A (ja) * | 2018-03-16 | 2019-09-19 | セイコーエプソン株式会社 | インクジェット捺染用クリアインク組成物、インクジェット捺染用インクセット及びインクジェット捺染方法 |
| JP2021154701A (ja) * | 2020-03-30 | 2021-10-07 | セイコーエプソン株式会社 | 処理液組成物、記録方法、組成物セット及び布帛 |
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| CN110248816B (zh) * | 2017-02-01 | 2021-06-15 | 东洋油墨Sc控股株式会社 | 预处理液和包含所述预处理液的油墨套装 |
| JP7052208B2 (ja) * | 2017-03-28 | 2022-04-12 | セイコーエプソン株式会社 | 前処理液、インクセット及び記録方法 |
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- 2022-03-04 EP EP22763445.8A patent/EP4303006A4/en not_active Withdrawn
- 2022-03-04 JP JP2023503985A patent/JPWO2022186395A1/ja active Pending
- 2022-03-04 WO PCT/JP2022/009566 patent/WO2022186395A1/ja not_active Ceased
- 2022-03-04 US US18/548,570 patent/US20240150605A1/en active Pending
- 2022-03-04 CN CN202280017472.0A patent/CN116940643A/zh active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008018406A1 (fr) * | 2006-08-11 | 2008-02-14 | Dic Corporation | Agent destiné à conférer une réceptivité à l'encre de jet d'encre à un tissu et tissu traité par cet agent |
| JP2019131919A (ja) * | 2018-01-31 | 2019-08-08 | セイコーエプソン株式会社 | インクジェット顔料捺染用処理液組成物、インクジェット顔料捺染用処理液組成物セット及びインクジェット顔料捺染方法 |
| US20190257030A1 (en) * | 2018-02-20 | 2019-08-22 | Eastern Tech Llc | Pretreatment for application onto finished cotton fabric |
| JP2019157071A (ja) * | 2018-03-16 | 2019-09-19 | セイコーエプソン株式会社 | インクジェット捺染用クリアインク組成物、インクジェット捺染用インクセット及びインクジェット捺染方法 |
| JP2021154701A (ja) * | 2020-03-30 | 2021-10-07 | セイコーエプソン株式会社 | 処理液組成物、記録方法、組成物セット及び布帛 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023114574A1 (en) * | 2021-12-14 | 2023-06-22 | Dupont Electronics, Inc. | Inkjet ink and primer fluid set |
| WO2024200070A1 (en) * | 2023-03-24 | 2024-10-03 | Agfa Nv | Aqueous ink set for inkjet recording |
| EP4495320A1 (en) * | 2023-07-19 | 2025-01-22 | Konica Minolta, Inc. | Ink set and inkjet recording method |
Also Published As
| Publication number | Publication date |
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| CN116940643A (zh) | 2023-10-24 |
| US20240150605A1 (en) | 2024-05-09 |
| EP4303006A1 (en) | 2024-01-10 |
| JPWO2022186395A1 (ja) | 2022-09-09 |
| EP4303006A4 (en) | 2025-06-11 |
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