Inkjet treatment fluid and inkjet textile printing device

Abstract

Inkjet treatment fluid, containing: emulsified particles containing a silicone oil; and an aqueous medium, where the mean particle size of the emulsified particles is 100 nm or more and 250 nm or less.

Description

Technical field

[0001] The present disclosure relates to an inkjet treatment fluid and an inkjet textile printing device. Background of the technology

[0002] Inkjet textile printing processes, for example, use ink containing pigments. To improve the colorfastness against rubbing of textile printing targets (hereafter sometimes referred to as textile printing articles) on which images are produced, ink containing pigments is sometimes used together with post-treatment fluids.

[0003] Transport rollers for inkjet recording devices are now known in the conventional manner (see, for example, patent literature 1). In the transport roller described in patent literature 1, a treatment fluid containing a fullerene and / or a fullerene derivative is applied to the surface of the transport roller. List of patent literature

[0004] Patent Literature 1: JP 2013-75524 A Brief explanation of the invention

[0005] The present invention provides an inkjet treatment fluid according to claim 1 and an inkjet textile printing device according to claim 13. Preferred embodiments are described in the dependent claims. Brief description of the drawings Fig. Figure 1 is a side view illustrating an example of an inkjet textile printing device according to a second embodiment of the present disclosure. Description of the embodiments

[0006] In recent years, further improvements in the colorfastness to rubbing of printed textiles have been required in inkjet textile printing technology. It is assumed that the colorfastness to rubbing of printed textiles varies depending on the concentration and type of silicone oil contained in the treatment fluid, the amount of treatment fluid dispensed, and similar factors (the treatment fluid can be referred to as the processing solution). For example, in a case where the amount of treatment fluid dispensed is small, it is assumed that the colorfastness to rubbing of printed textiles may be impaired if the silicone oil concentration is too low. Therefore, it is suitable (e.g.,(advantageous), in addition to adjusting the concentration and selecting the type of silicone oil, to know the conditions for the properties of an inkjet treatment fluid under which a textile printed article with excellent color fastness against rubbing can be produced.

[0007] It is assumed here that the colorfastness to rubbing of textile prints also varies depending on the mean particle size of emulsified particles containing silicone oil in the treatment fluid. For example, it is assumed that in a case where the mean particle size of the emulsified particles is small, the colorfastness to rubbing of textile prints may be impaired. Therefore, from the perspective of the mean particle size of the emulsified particles in the treatment fluid, it is suitable (e.g., advantageous) to know the conditions for the properties of an inkjet treatment fluid under which a textile print with excellent colorfastness to rubbing can be produced.

[0008] In cases where the mean particle size of the emulsified particles in the treatment fluid is large, the meniscus may become unstable when the treatment fluid is ejected from the application head of an inkjet textile printing device, and the ejection capability may deteriorate. Therefore, it is also necessary for the inkjet treatment fluid to exhibit excellent ejection capability from the application head. Furthermore, it is preferable that the inkjet treatment fluid also suppresses deterioration of the texture of the printed textile article.

[0009] The inkjet treatment fluid of the present disclosure can suppress deterioration of the texture of the textile printed article, can produce a textile printed article which has excellent color fastness against rubbing and has excellent ejectability from the application head of an inkjet textile printing device.

[0010] The following describes embodiments of the present disclosure. In this description, the measured value of the volume median diameter (D) is 50 ) the median diameter, measured using a laser diffraction / scattering particle size distribution analyzer (“LA-950”, manufactured by HORIBA, Ltd.), unless otherwise specified. Hereinafter, the volume median diameter is sometimes referred to as “D”. 50The term “main component” refers to the component that constitutes the largest mass fraction of the material, unless otherwise specified. “Specific density” refers to the specific density at 25 °C, unless otherwise specified. Acrylic and methacrylic are sometimes referred to collectively as “(meth)acrylic”. Each component described in this description may be used individually or as a combination of two or more of these. [First embodiment: inkjet treatment fluid]

[0011] The following describes an inkjet treatment fluid (hereinafter also referred to as the treatment fluid) according to the first embodiment of the present disclosure. The treatment fluid according to the first embodiment contains emulsified particles and an aqueous medium. The emulsified particles are dispersed in the aqueous medium of the treatment fluid. In other words, the treatment fluid according to the first embodiment is an emulsion, more precisely an oil-in-water (O / W) emulsion.

[0012] The treatment fluid according to the first embodiment is used, for example, in an inkjet textile printing device and an inkjet textile printing process, which will be described later. The treatment fluid according to the first embodiment is, for example, a post-treatment fluid. In detail, after an image has been generated with ink in the image-generating area of ​​a textile printing target, the image-generating area is post-treated with the treatment fluid according to the first embodiment. <Emulgierte Partikel>

[0013] The emulsified particles contained in the treatment fluid contain a silicone oil. This silicone oil preferably contains at least one silicone oil having an ionic functional group (the ionic functional group can be referred to as an ionic group). By including a silicone oil with an ionic functional group, a textile print can be produced that is particularly superior in colorfastness to wet rubbing. The silicone oil can be a different silicone oil than the one with an ionic functional group (hereinafter sometimes referred to as another silicone oil). Alternatively, the silicone oil can contain both a silicone oil with an ionic functional group and another silicone oil. In this case, both the silicone oil with an ionic functional group and another silicone oil can be contained within a single emulsified particle.Alternatively, the emulsified particles contained in the treatment fluid can be of two or more types. For example, a silicone oil containing an ionic functional group can be contained in the first emulsified particles, and another silicone oil can be contained in the second emulsified particles. Since the emulsified particles contain at least one silicone oil, in particular a silicone oil containing an ionic functional group, the following advantages (first to fourth advantages) are obtained.

[0014] The first advantage is described below. Silicone oil has a friction-reducing effect. Since the textile printing target is post-treated with the treatment fluid, the image created on the textile printing target is coated with silicone oil, and the coefficient of friction of the textile printing target's surface is reduced. As a result, even if the image created on the textile printing target is rubbed, the color will not easily fade, and a textile printing item can be produced that is excellent in terms of colorfastness against both dry and wet rubbing. Because the textile printing target is coated with a silicone oil, which has a friction-reducing effect, the friction between the threads of the textile printing target is reduced.As a result, stiffening of the textile printing target caused by image generation is reduced, and deterioration of the texture of the textile printed article is suppressed.

[0015] The second advantage is described below. Silicone oil has water-repellent properties. Since the textile printing target is post-treated with the treatment fluid, it is coated with a water-repellent silicone oil, thus giving its surface water repellency. As a result, even if the image printed on the textile target is rubbed while wet, the color will not easily fade, and the textile print will be produced with excellent colorfastness against wet rubbing.

[0016] The third advantage is described below. Specifically, in cases where at least one silicone oil containing an ionic functional group is present, an ionic bond is assumed to form between the ionic functional group and the textile printing target, and between the ionic functional group and the ink ejected onto the textile printing target. This is because the silicone oil contains an ionic functional group. Since an ionic bond is formed, the silicone oil containing the ionic functional group is less likely to be washed off the textile printing target and the ink by water. As a result, a textile print can be produced that exhibits superior colorfastness to wet rubbing.

[0017] The fourth advantage is described below. Specifically, in cases where at least one silicone oil containing an ionic functional group is present, the emulsified particles containing this silicone oil can be suitably dispersed in the aqueous medium of the treatment fluid. Such a treatment fluid can then be ejected more efficiently from the application head of an inkjet textile printing device. When the treatment fluid is ejected from the application head, the amount of treatment fluid used is reduced compared to when the textile item is immersed in the treatment fluid.Therefore, stiffening of the textile printing target is less likely, and deterioration of the textile print's texture is further suppressed. Furthermore, in a case where the treatment fluid is ejected from the application head, a silicone oil with high viscosity can be used, compared to a case where ink is ejected from the recording head, which contains a silicone oil as its base oil. Consequently, a textile print can be produced with superior colorfastness against rubbing. The first four advantages were described above.

[0018] The percentage of silicone oil in the treatment fluid is preferably 5% by weight or more and 15% by weight or less. If the percentage of silicone oil is 5% by weight or more, deterioration of the texture of the printed textile article can be further suppressed, and a printed textile article with superior colorfastness to rubbing can be produced. If the percentage of silicone oil is 15% by weight or less, the ejection capability of the treatment fluid from the application head of an inkjet textile printing device can be further improved. In a case where at least one silicone oil having an ionic functional group is included as the silicone oil, since the percentage of silicone oil is 15% by weight...A silicone oil concentration of -% or less prevents an excessive increase in the number of ionic functional groups in the silicone oil. As a result, difficulties in imparting suitable water repellency to the surface of the textile print target are avoided, and a reduction in colorfastness to rubbing of the printed textile item is suppressed. Although it also depends on the type of silicone oil, a textile print item with excellent colorfastness to rubbing can be produced, especially if the percentage of silicone oil is within such a concentration range.

[0019] The percentage of silicone oil in the treatment fluid is preferably 7% by weight or more, more preferably 9% by weight or more, and even more preferably 10% by weight or more. The percentage of silicone oil in the treatment fluid is preferably 14% by weight or less, and more preferably 13% by weight or less. In particular, by adjusting the percentage of silicone oil in the treatment fluid to within the range of 10% by weight or more and 13% by weight or less, a textile print can be produced which is superior in both colorfastness to dry rubbing and colorfastness to wet rubbing.

[0020] The percentage of silicone oil in the treatment fluid represents the percentage of silicone oil by mass relative to the mass of the treatment fluid. In cases where the emulsified particles contain two or more types of silicone oils (for example, a silicone oil with an ionic functional group and another silicone oil), the percentage of silicone oil represents the percentage of the total mass of the two or more types of silicone oils relative to the mass of the treatment fluid.

[0021] The viscosity of the silicone oil is preferably 500 mmol / L. 2 / s (ie mm 2 / second) or more. If the viscosity of the silicone oil is 500 mmol / L 2If the viscosity is / s or higher, it is less likely that the silicone oil will be detached from the printed textile article by rubbing, and a printed textile article can be produced that is superior in colorfastness to both dry rubbing and wet rubbing. As already described, the treatment fluid according to the first embodiment exhibits excellent ejectability from the application head of an inkjet textile printing device. In a case where the treatment fluid is ejected from the application head, the amount of treatment fluid used is reduced compared to a case where the printed textile article is immersed in the treatment fluid. Therefore, even in a case where a silicone oil with a high viscosity of 500 mmol / L is used, the amount of treatment fluid used is reduced. 2When / s or more is used in the treatment fluid, stiffening of the textile printing target is less likely to occur, and deterioration of the texture of the textile printing item is further suppressed.

[0022] The upper limit of the silicone oil's viscosity is not particularly restricted. For example, the viscosity of the silicone oil is preferably 100,000 mmol / L. 2 / s or less, preferably 6000 mm 2 / s or less. The viscosity of the silicone oil can, for example, lie within the range of two values ​​selected from the group consisting of 500 mm. 2 / s, 700 mm 2 / s, 900 mm 2 / s, 1000 mm 2 / s, 1100 mm 2 / s, 1200 mm 2 / s, 1500 mm 2 / s, 1700 mm 2 / s, 1800 mm 2 / s, 2000 mm 2 / s, 3000 mm 2 / s, 5700 mm 2 / s and 6000 mm 2 / s.

[0023] The viscosity of the silicone oil refers to its kinematic viscosity at 25°C. In a case where the emulsified particles contain two or more types of silicone oils (for example, a silicone oil with an ionic functional group and another silicone oil), the viscosity of the silicone oil refers to the viscosity of a mixture of the two or more types of silicone oils.

[0024] The viscosity of the silicone oil is measured according to the procedure described in JIS (Japanese Industrial Standards) Z8803:2011 (Method for measuring the viscosity of a liquid). For example, the silicone oil can be extracted from the treatment fluid with toluene, washed, and dried to separate the silicone oil from the treatment fluid, and the viscosity of the silicone oil can then be measured.

[0025] The mean particle size of the emulsified particles (dispersed particle size in an aqueous medium) is 100 nm or more and 250 nm or less. If the mean particle size of the emulsified particles is 100 nm or more and 250 nm or less, the inkjet treatment fluid according to the first embodiment suppresses deterioration of the texture of the printed textile article, can produce a printed textile article that exhibits excellent colorfastness to rubbing and excellent ejectability from the application head of an inkjet textile printing device.

[0026] If the mean particle size of the emulsified particles is less than 100 nm, the colorfastness to rubbing, especially the colorfastness to wet rubbing of the printed textile article, decreases noticeably. This is assumed to be because, when the particle size of the emulsified particles is too small, the specific surface area of ​​the treatment fluid increases, thus increasing its hydrophilicity and decreasing its water resistance. Conversely, if the mean particle size of the emulsified particles exceeds 250 nm, the ejection capacity of the treatment fluid from the application head deteriorates noticeably.

[0027] The mean particle size of the emulsified particles is preferably 100 nm or more and 160 nm or less. Alternatively, the mean particle size of the emulsified particles may, for example, lie within the range of two values ​​selected from the group consisting of 100 nm, 105 nm, 110 nm, 115 nm, 120 nm, 125 nm, 130 nm, 135 nm, 140 nm, 145 nm, 150 nm, 155 nm, 160 nm, 170 nm, 180 nm, 190 nm, 200 nm, 210 nm, 220 nm and 250 nm.

[0028] In this description, in a case where two or more types of emulsified particles with different mean particle sizes are contained in the treatment fluid, the phrase "mean particle size of the emulsified particles lies within a specific range" generally means that the "mean particle size of two or more types of emulsified particles (combined mean particle size of two or more types of emulsified particles) lies within a specific range." However, in a case where two or more types of emulsified particles with different mean particle sizes are contained in the treatment fluid in this way, it is preferred that the mean particle size of each type of emulsified particle be 100 nm or more and 250 nm or less. It is more preferred if the difference in mean particle size between the two or more types of emulsified particles is smaller.In a case where, for example, two types of emulsified particles with different mean particle sizes are present in the treatment fluid, it is preferred if the mean particle sizes of the two types of emulsified particles are closer together. For example, it is preferred that the mean particle sizes of two different types of emulsified particles are both in the range of 100 nm or more and 160 nm or less.

[0029] More precisely, in a case where the first emulsified particles and the second emulsified particles, with a mean particle size differing from that of the first emulsified particles, are contained in the treatment fluid, it is preferred that the mean particle size of the first emulsified particles be 100 nm or more and 250 nm or less, and that the mean particle size of the second emulsified particles be 100 nm or more and 250 nm or less. It is more preferred that the mean particle size of the first emulsified particles be 100 nm or more and 160 nm or less, and that the mean particle size of the second emulsified particles be 100 nm or more and 160 nm or less. It is still more preferred that the difference between the mean particle size of the first emulsified particles and the mean particle size of the second emulsified particles be 0 nm or more and 30 nm or less.

[0030] The mean particle size of the emulsified particles represents a harmonic mean particle size (also known as cumulative mean particle size) based on the scattered light intensity calculated using the cumulative method. The mean particle size of the emulsified particles is measured according to the method described in ISO 13321:1996 (Particle size analysis - Photon correlation spectroscopy).

[0031] The emulsified particles may also contain components other than silicone oil. However, if the emulsified particles contain only silicone oil, a textile print with excellent colorfastness against rubbing can be produced more reliably, and deterioration of the texture of the textile print can be more reliably suppressed.

[0032] As previously described, the silicone oil contained in the emulsified particles can be a silicone oil with an ionic functional group or another silicone oil. Alternatively, the silicone oil can contain both a silicone oil with an ionic functional group and another silicone oil. In this case, both the silicone oil with an ionic functional group and another silicone oil can be present in a single emulsified particle. Alternatively, a silicone oil with an ionic functional group can be present in the first emulsified particles, and another silicone oil can be present in the second emulsified particles. The silicone oil with an ionic functional group and the other silicone oil are described below. (Silicone oil, which has an ionic functional group)

[0033] Silicone oil containing an ionic functional group is a modified silicone oil, specifically a silicone oil modified with an ionic functional group. Examples of silicone oils modified with an ionic functional group include modified silicone oils in which ionic functional groups are introduced into side chains and modified silicone oils in which ionic functional groups are introduced into end groups.

[0034] Modified silicone oils in which ionic functional groups are introduced into side chains have: a first end group represented by the following formula (1a), a repeating unit represented by the following formula (1b), a repeating unit represented by the following formula (1c), and a second end group represented by the following formula (1d).

[0035] * in formula (1a) denotes a free valence bonded to a silicon atom in the repeating unit represented by formula (1b) or (1c). * in formula (1d) denotes a free valence bonded to an oxygen atom in the repeating unit represented by formula (1b) or (1c). R 1 In formula (1c), a group comprising an ionic functional group is represented. The ionic functional group in the group comprising an ionic functional group is preferably an amino group, a carboxyl group, a phenolic hydroxyl group, or a silanol group.

[0036] Modified silicone oils in which ionic functional groups are introduced in end groups have: a first end group represented by the following formula (2a), a repeating unit represented by the following formula (2b), and a second end group represented by the following formula (2c).

[0037] * in formula (2a) denotes a free valence bonding to a silicon atom in the repeating unit represented by formula (2b). * in formula (2c) denotes a free valence bonding to an oxygen atom in the repeating unit represented by formula (2b). R 2 in formula (2a) and R 3 In formula (2c), each independently represents a group comprising an ionic functional group. The ionic functional group within the group comprising an ionic functional group is preferably an amino group, a carboxyl group, a phenolic hydroxyl group, or a silanol group.

[0038] The silicone oil, which has an ionic functional group, preferably contains at least one selected from the group consisting of an amino-modified silicone oil, a carboxy-modified silicone oil, a phenol-modified silicone oil, and a silanol-modified silicone oil. Furthermore, the silicone oil having an ionic functional group is even more preferably at least one selected from the group consisting of these. The silicone oil having an ionic functional group is even more preferably one of these. An amino-modified silicone oil, a carboxy-modified silicone oil, a phenol-modified silicone oil, and a silanol-modified silicone oil each have an amino group, a carboxyl group, a phenolic hydroxyl group, and a silanol group, respectively, as their ionic functional groups.Among these, the silicone oil which has an ionic functional group is even more preferred as a carboxy-modified silicone oil.

[0039] In a case where at least one silicone oil containing an ionic functional group is included, it is preferred that the functional group equivalent of the silicone oil containing the ionic functional group be 1000 g / mol or more and 5500 g / mol or less in order to adequately disperse the emulsified particles in an aqueous medium. The functional group equivalent is the molecular weight per 1 mol of the functional group (ionic functional group). The functional group equivalent of the silicone oil, which has an ionic functional group, lies, for example, within the range of two values ​​which are selected from the group consisting of 1000 g / mol, 1200 g / mol, 1474 g / mol, 1490 g / mol, 1500 g / mol, 2000 g / mol, 3800 g / mol, 3900 g / mol, 4000 g / mol, 5000 g / mol, 5200 g / mol and 5500 g / mol.

[0040] In a case in which at least one silicone oil having an ionic functional group is included, the percentage content of the silicone oil having an ionic functional group, in relation to the total mass of the silicone oils contained in the emulsified particles, is preferably 30 wt.% or more and 100 wt.% or less, more preferably 40 wt.% or more and 100 wt.% or less, and particularly preferably 100 wt.%. (Other silicone oil)

[0041] The silicone oil contained in the treatment fluid can only be another silicone oil. Alternatively, since another silicone oil is included in addition to a silicone oil containing an ionic functional group, the viscosity of the silicone oil can be adjusted. Examples of another silicone oil include unmodified silicone oil. More specific examples include dimethylpolysiloxane.

[0042] In a case where another silicone oil is included, the percentage content of another silicone oil in relation to the total mass of the silicone oils contained in the emulsified particles is preferably 50 wt.% or more and 100 wt.% or less, more preferably 50 wt.% or more and 70 wt.% or less, and even more preferably 50 wt.% or more and 60 wt.% or less.

[0043] In a case where the silicone oil contained in the treatment fluid includes both a silicone oil with an ionic functional group and another silicone oil, the silicone oil is preferably a combination of a carboxy-modified silicone oil and dimethyl polysiloxane. In this case, both the carboxy-modified silicone oil and the dimethyl polysiloxane can be contained in one type of emulsified particles. Alternatively, the carboxy-modified silicone oil can be contained in the first emulsified particles, and the dimethyl polysiloxane can be contained in the second emulsified particles, which are another type of emulsified particles.

[0044] In a case where the silicone oil contained in the treatment fluid includes both a silicone oil having an ionic functional group and another silicone oil, the ratio of the mass of the silicone oil having an ionic functional group to the mass of the other silicone oil is preferably 0.5 or more and less than 1.0, more preferably 0.6 or more and 0.7 or less. <Wässriges Medium>

[0045] The aqueous medium contained in the treatment fluid is a medium that includes water as a major component. The aqueous medium can function as a solvent or as a dispersion medium. Specific examples of the aqueous medium include water or a mixture of water and a polar solvent. Examples of the polar solvent contained in the aqueous medium include methanol, ethanol, isopropyl alcohol, butanol, and methyl ethyl ketone. The percentage of water in the aqueous medium is preferably 90% by weight or more, and more preferably 100% by weight. The percentage of the aqueous medium is preferably 50% by weight or more and 90% by weight or less, and more preferably 55% by weight or more and 70% by weight or less, with respect to the mass of the treatment fluid. <Andere Komponenten>

[0046] The treatment fluid may contain components other than the emulsified particles and the aqueous medium (hereinafter sometimes referred to as "other components"). Examples of other components include acids, bases, polyols, and dispersants. (Acid)

[0047] In a case where at least one silicone oil, which has an ionic functional group, is included as the silicone oil, and the silicone oil, which has an ionic functional group, also has an anionic functional group, it is preferred that the treatment fluid contains an acid. The ionization of the anionic functional groups is promoted by the acid, and the emulsified particles containing the silicone oil, which has an ionic functional group, are suitably dispersed in the aqueous medium. Examples of acids include strong and weak acids. Examples of strong acids include hydrochloric acid, p-toluenesulfonic acid, and sulfuric acid. Examples of weak acids include benzoic acid and acetic acid. A strong acid is preferred to promote the ionization of the anionic functional groups of the silicone oil.Hydrochloric acid, p-toluenesulfonic acid, or sulfuric acid are particularly preferred. In cases where the treatment liquid contains an acid, the percentage of the acid, relative to the amount of acid, is preferably 1 wt% or more at a concentration of 1 mol / L and 5 wt% or less relative to the mass of the treatment liquid. (Base)

[0048] In a case where at least one silicone oil having an ionic functional group is included, and the silicone oil having an ionic functional group also has a cationic functional group, it is preferred that the treatment fluid contains a base. The ionization of the cationic functional groups is promoted by the base, and the emulsified particles containing the silicone oil having an ionic functional group are suitably dispersed in the aqueous medium. Examples of the base include sodium hydroxide. In a case where the treatment fluid contains a base, the percentage of the base, based on the amount of base at a concentration of 1 mol / L, is preferably 1 wt% or more and 5 wt% or less based on the mass of the treatment fluid. (Polyol)

[0049] If the treatment fluid contains a polyol, its viscosity is adjusted accordingly. Diols or triols are preferred as polyols. Examples of diols include glycol compounds. More specific examples include ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol, and tetraethylene glycol. Examples of triols include glycerol. In cases where the treatment fluid contains a polyol, the percentage of polyol is preferably 10% by weight or more and 40% by weight or less, more preferably 15% by weight or more and 35% by weight or less, based on the mass of the treatment fluid. (dispersant)

[0050] Examples of dispersants include surfactants, resin dispersants, and polysaccharides. However, it is preferred that the emulsified particles be dispersed in the treatment fluid without any dispersant. As previously described, emulsified particles containing a silicone oil, particularly one with an ionic functional group, are suitably dispersed in an aqueous medium. Therefore, the dispersed state of the emulsified particles can be appropriately maintained even without a dispersant. Dispersants often have hydrophilic groups. If the treatment fluid does not contain a dispersant with a hydrophilic group, the colorfastness to wet rubbing of the textile article treated with the fluid is further improved. <Verfahren zur Herstellung einer Behandlungsflüssigkeit>

[0051] An example of a process for producing a treatment fluid is described. Using a homogenizer, a silicone oil, an aqueous medium, and components (for example, acid or base and polyol) that are added as needed are mixed and emulsified. Thus, emulsified particles containing a silicone oil are dispersed in the aqueous medium to obtain a treatment fluid.

[0052] To facilitate emulsification, a raw material emulsion containing emulsified particles can be prepared in advance. This raw material emulsion, an aqueous medium, and a polyol can then be mixed together as needed to obtain a treatment fluid. The raw material emulsion might contain, for example, a silicone oil, a portion of the aqueous medium, and an acid or base, if required. The emulsification time for preparing the raw material emulsion might be, for example, 5 minutes or more and 1 hour or less. The emulsification temperature might be, for example, 5°C or more and 40°C or less. The percentage of the raw material emulsion might be, for example, 15% by weight or more and 50% by weight or less, relative to the mass of the treatment fluid.

[0053] In a case where two or more types of silicone oils are used as raw materials, for example, both a silicone oil with an ionic functional group and an unmodified silicone oil, the two silicone oils can be mixed and emulsified to produce emulsified particles containing both the silicone oil with an ionic functional group and the unmodified silicone oil, resulting in a treatment fluid. Alternatively, by mixing a raw material emulsion of a silicone oil with an ionic functional group and a raw material emulsion of an unmodified silicone oil, a treatment fluid can be obtained in which the first emulsified particles containing the silicone oil with an ionic functional group and the second emulsified particles containing the unmodified silicone oil are present together.

[0054] The method for adjusting the mean particle size of emulsified particles contained in the treatment fluid so that it lies within the range of 100 nm or more and 250 nm or less is not particularly restricted. For example, an appropriately adjusted amount of surfactant can be added and mixed in when the treatment fluid or the raw material emulsion is prepared. In particular, the mean particle size of emulsified particles can be decreased by increasing the amount of surfactant added. Examples of surfactants include polyoxyethylene alkyl ethers. [Second embodiment: inkjet textile printing device]

[0055] Next, an inkjet textile printing device 10 according to a second embodiment of the present disclosure is described with reference to Fig. 1. Described. Illustrated for easier understanding. Fig.1. The diagram mainly shows the individual components schematically. The size, number, and other details of each illustrated component can be changed as needed. Fig. Figure 1 is a side view illustrating the main part of the inkjet textile printing device 10, which is an example of the inkjet textile printing device according to the second embodiment. The in Fig. 1 Illustrated inkjet textile printing device 10 is a flatbed inkjet textile printing device.

[0056] The inkjet textile printing device 10 according to the second embodiment processes a textile printing target P using the treatment fluid according to the first embodiment. Since the treatment fluid according to the first embodiment is used, a textile printed article can be produced according to the inkjet textile printing device 10 that exhibits excellent colorfastness to rubbing, and deterioration of the textile printed article's texture can be suppressed, for the same reason as described in the first embodiment. Furthermore, since the treatment fluid according to the first embodiment has excellent ejectability from the application head, these effects can be reliably achieved according to the inkjet textile printing device according to the second embodiment.

[0057] The in Fig.1. The illustrated inkjet textile printing device 10 comprises a recording head 1, an application head 2, and an assembly table 3. The recording head 1 comprises a first recording head 1a, a second recording head 1b, a third recording head 1c, and a fourth recording head 1d.

[0058] The printhead 1 ejects ink onto the image-generating area of ​​the textile printing target P. The first printhead 1a, the second printhead 1b, the third printhead 1c, and the fourth printhead 1d of printhead 1 eject inks of different colors (for example, yellow ink, magenta ink, cyan ink, and black ink). The printhead 1 is not particularly restricted, but examples include a piezoelectric printhead and a thermal inkjet printhead.

[0059] The application head 2 ejects a treatment fluid onto at least the image-generating area of ​​the textile printing target P. The treatment fluid is the treatment fluid according to the first embodiment. The application head 2 is not particularly restricted, but examples include a piezoelectric printhead and a thermal inkjet printhead.

[0060] The textile printing target P is placed on the assembly table 3. The recording head 1 and the application head 2 are positioned above the assembly table 3, allowing the ink and treatment fluid to be ejected onto the textile printing target P. Driven by a motor (not illustrated), the assembly table 3 moves horizontally in one direction (for example, inwards). Fig. 1 to the left) from the recording head 1 to the application head 2. The textile printing target P on the assembly table 3 is transported while the assembly table 3 moves horizontally.

[0061] The textile printing target P can be a woven or knitted fabric. Examples of textile printing target P include cotton fabrics, silk fabrics, linen fabrics, acetate fabrics, viscose fabrics, nylon fabrics, polyurethane fabrics, and polyester fabrics.

[0062] In the production of a textile print article, the assembly table 3, on which the textile print target P is placed, first moves horizontally, and the textile print target P is moved to a position facing the recording head 1. Ink is ejected from the recording head 1 onto the image generation area of ​​the textile print target P. In this way, an image is created in the image generation area of ​​the textile print target P using ink. After the ink has been ejected, the assembly table 3, on which the textile print target P is placed, continues to move horizontally, and the textile print target P is moved to a position facing the application head 2. The treatment fluid is ejected from the application head 2 onto at least the image generation area of ​​the textile print target P.In this way, an application film with the treatment fluid is created on the image that was generated in the image generation area of ​​the textile printing target P.

[0063] The application head 2 can eject the treatment fluid only onto the image-generating area of ​​the textile printing target P. Alternatively, the application head 2 can eject the treatment fluid onto an area wider than the image-generating area of ​​the textile printing target P, or it can eject the treatment fluid onto the entire surface of the textile printing target P. To reduce the amount of treatment fluid used and to prevent deterioration of the texture of the textile printed article, it is preferred that the application head 2 eject the treatment fluid only onto the image-generating area of ​​the textile printing target P. For the same reason, it is more preferred that the application head 2 ejects the treatment fluid below the image-generating areas only onto the area where ink has been ejected by the recording head 1.Since the application head 2 can precisely control the position at which the treatment fluid is ejected, it is possible to eject the treatment fluid only onto the area where ink was ejected. To precisely control the position at which the treatment fluid is ejected, it is preferred that the distance between the application head 2 and the textile printing target P be 1 mm or more and 5 mm or less. To efficiently proceed with the post-treatment using the treatment fluid, it is preferred that only the treatment fluid is ejected from the application head 2.

[0064] After the treatment fluid is ejected from the application head 2 onto the textile printing target P, the assembly table 3, on which the textile printing target P is placed, continues to move horizontally, and the textile printing target P is moved to a position facing the heating unit (not illustrated). The heating unit heats the textile printing target P to dry the ink and treatment fluid. The heating temperature is, for example, 120 °C or more and 180 °C or less. The heating time is, for example, 1 minute or more and 10 minutes or less. Heating causes the volatile components contained in the ink and treatment fluid to evaporate, thus promoting the fixation of the ink and treatment fluid to the textile printing target P.As a result, a textile print article is produced, which is a textile print target P that is subjected to image generation with ink and processing with a treatment fluid.

[0065] The inkjet textile printing device 10 according to the second embodiment has been described above. However, the inkjet textile printing device of the present disclosure is not limited to the inkjet textile printing device 10 and can, for example, be modified as shown in the following modified examples.

[0066] Regarding the first modified example, the inkjet textile printing device 10 can include a spray mist for spraying the treatment fluid instead of the application head 2 for ejecting the treatment fluid.

[0067] Regarding the second modified example, the treatment with the treatment fluid can be carried out by immersing the textile printing target P in a tank in which the treatment fluid is stored. In the case of immersion, the quantity of treatment fluid ejected, as described later in the third embodiment, corresponds to the quantity of treatment fluid applied.

[0068] Regarding the third modified example, the recording head 1 and the application head 2 can move horizontally in a state in which the assembly table 3 is fixed, although the assembly table 3 moves horizontally in the embodiment described above.

[0069] Regarding the fourth modified example, the recording head 1 and the application head 2 can move horizontally in a direction perpendicular to the direction in which the textile printing target P is conveyed while the assembly table 3 moves horizontally, or the recording head 1 and the application head 2 can move horizontally in the direction in which the textile printing target P is conveyed.

[0070] Regarding the fifth modified example, the number of recording heads 1 can be from 1 to 3 or 5 or more.

[0071] Regarding the sixth modified example, the inkjet textile printing device cannot be a flatbed inkjet textile printing device. The effects achieved by using the treatment fluid according to the first embodiment can be obtained regardless of the type of inkjet textile printing device, as long as the inkjet textile printing device has the recording head 1 and the application head 2. [Third embodiment: inkjet textile printing process]

[0072] Next, an inkjet textile printing method according to a third embodiment of the present disclosure is described with further reference to Fig.1 described. In the inkjet textile printing process according to the third embodiment, an image is generated in the image-generating area of ​​the textile printing target P using the treatment fluid according to the first embodiment. In the inkjet textile printing process according to the third embodiment, an image is generated in the image-generating area of ​​the textile printing target P using the inkjet textile printing device 10 according to the second embodiment. In the inkjet textile printing process according to the third embodiment, since the treatment fluid according to the first embodiment is used, a textile printed article can be produced which has excellent colorfastness to rubbing, and deterioration of the texture of the textile printed article can be suppressed for the same reason as described in the first embodiment.Furthermore, since the treatment fluid according to the first embodiment has excellent ejection capability from the application head, these effects can be reliably achieved according to the inkjet textile printing method according to the third embodiment.

[0073] An inkjet textile printing method according to the third embodiment comprises ink ejection and treatment fluid ejection. During ink ejection, ink is ejected from the recording head 1 onto the image-generating area of ​​the textile printing target P. During treatment fluid ejection, the treatment fluid is ejected from the application head 2 onto at least the image-generating area of ​​the textile printing target P. The treatment fluid is the treatment fluid according to the first embodiment. The treatment fluid ejection is performed, for example, after the ink ejection. The inkjet textile printing method may optionally further include a heating step.

[0074] When ejecting ink, the amount of ink ejected onto the textile printing target P is, for example, 5 g / m². 2 or more and 40 g / m² 2 or less.

[0075] When treatment fluid is ejected, the amount of treatment fluid ejected onto the textile printing target P is, for example, 10 g / m². 2 or more and 120 g / m² 2 or less (including the application case). To improve colorfastness, particularly against dry rubbing, it is preferred that the amount of treatment fluid ejected be 15 g / m². 2 or more and 30 g / m² 2 or less. To improve colorfastness, particularly against wet rubbing, in addition to colorfastness against dry rubbing, it is preferred that the amount of treatment fluid ejected be 17 g / m². 2 or more and 25 g / m² 2 or less. The inkjet textile printing method according to the third embodiment was described above with reference to Fig. 1 described. [Ink used in the second embodiment and the third embodiment]

[0076] Next, the ink used in the second and third embodiments is described. The ink contains, for example, a pigment and an aqueous medium. The ink may further optionally contain at least one selected from the group consisting of surfactants, polyols, and binder resin particles. (Pigment)

[0077] The pigment exists, for example, in a state where it is dispersed in an aqueous medium. From the perspective of achieving an ink with excellent image density, hue, and color stability, the D 50 -Value of the pigment preferably 30 nm or more and 250 nm or less, particularly preferably 70 nm or more and 160 nm or less.

[0078] Examples of the pigment include yellow pigments, orange pigments, red pigments, blue pigments, violet pigments, and black pigments. Examples of yellow pigments include CI Pigment Yellow (74, 93, 95, 109, 110, 120, 128, 138, 139, 151, 154, 155, 173, 180, 185, and 193). Examples of orange pigments include CI Pigment Orange (34, 36, 43, 61, 63, and 71). Examples of red pigments include CI Pigment Red (122 and 202). Examples of blue pigments include CI Pigment Blue (15, especially 15:3). Examples of violet pigments include CI Pigment Violet (19, 23, and 33). Examples of black pigments include CI Pigment Black (7).

[0079] The percentage of pigment is preferably 1% by weight or more and 12% by weight or less, more preferably 1% by weight or more and 7% by weight or less, based on the mass of the ink. If the percentage of pigment is 1% by weight or more, the image density of the textile printed article can be improved. If the percentage of pigment is 12% by weight or less, an ink with high fluidity can be obtained. (Aqueous medium)

[0080] The aqueous medium contained in the ink is equivalent to the aqueous medium contained in the treatment fluid described in the first embodiment. The percentage content of the aqueous medium is preferably 5% by weight or more and 70% by weight or less, more preferably 40% by weight or more and 60% by weight or less, with respect to the mass of the ink. (surfactant)

[0081] If the ink contains a surfactant, its wettability with respect to the textile printing target is improved. Examples of surfactants include anionic, cationic, non-ionic, and amphoteric surfactants. The surfactant contained in the ink is preferably a non-ionic surfactant. The non-ionic surfactant is preferably a surfactant with an acetylene glycol structure, more preferably an acetylenediol-ethylene oxide adduct. The HLB value of the surfactant is preferably 3 or more and 20 or less, more preferably 6 or more and 16 or less, and even more preferably 7 or more and 10 or less. The HLB value of a surfactant is calculated, for example, using the Griffin method from the formula "HLB value = 20 × (sum of the formula weights of the hydrophilic units) / molecular weight". To improve image density while suppressing image shift, the percentage of surfactant is preferably 0.1 wt.% or more and 5.0 wt.-% or less, more preferably 0.5 wt.% or more and 2.0 wt.% or less with respect to the mass of the ink. (Polyol)

[0082] If the ink contains a polyol, its viscosity is adjusted appropriately. The polyol contained in the ink is equivalent to the polyol contained in the treatment fluid described in the first embodiment. In a case where the ink contains a polyol to adjust its viscosity appropriately, the percentage of polyol is preferably 5% by weight or more and 60% by weight or less, more preferably 20% by weight or more and 50% by weight or less, based on the mass of the ink. (Binder resin particles)

[0083] The binder resin particles are dispersed in an aqueous medium. These particles act as a binder, holding the textile printing target and the pigment together. Therefore, if the ink contains binder resin particles, a textile print with excellent pigment fixation can be obtained.

[0084] Examples of resins contained in the binder resin particles include urethane resins, (meth)acrylic resins, styrene-(meth)acrylic resins, styrene-maleic acid copolymers, vinylnaphthalene-(meth)acrylic acid copolymers, and vinylnaphthalene-maleic acid copolymers. A urethane resin is preferably the resin contained in the binder resin particles. The percentage of urethane resin in the binder resin particles is preferably 80% by weight or more, more preferably 100% by weight.

[0085] The percentage of binder resin is preferably 1 wt.% or more and 20 wt.% or less, more preferably 2 wt.% or more and 10 wt.% or less, based on the mass of the ink. If the percentage of binder resin particles is 1 wt.% or more, a textile printing target with excellent pigment fixability can be obtained. Conversely, if the percentage of binder resin particles is 20 wt.% or less, the ink can be ejected stably onto the textile printing target. (Additive)

[0086] The ink may also contain known additives (in particular solution stabilizers, drying inhibitors, antioxidants, viscosity modifiers, pH modifiers, antifungals and the like), if required. (Process for the production of ink)

[0087] The ink is produced by mixing, for example, a pigment, an aqueous medium, and components (such as surfactant, polyol, and binder resin particles) that are added as needed using a stirrer. The mixing time is, for example, 1 minute or more and 30 minutes or less. [Summary of the present revelation]

[0088] An inkjet treatment fluid according to a first aspect of the present disclosure comprises emulsified particles containing a silicone oil and an aqueous medium, where the mean particle size of the emulsified particles is 100 nm or more and 250 nm or less.

[0089] This inkjet treatment fluid can suppress deterioration of the texture of the textile printed article, can produce a textile printed article that has excellent color fastness against rubbing and that has excellent ejection capability from the application head of an inkjet textile printing device.

[0090] In the inkjet treatment fluid described above, the mean particle size of the emulsified particles can be 100 nm or more and 160 nm or less.

[0091] By exhibiting such a configuration, the inkjet treatment fluid has a superior ejection capability from the application head.

[0092] In the inkjet treatment fluid described above, the emulsified particles can include first emulsified particles and second emulsified particles with a mean particle size that differs from the mean particle size of the first emulsified particles. The mean particle size of the first emulsified particles can be 100 nm or more and 250 nm or less, and The mean particle size of the second emulsified particles can be 100 nm or more and 250 nm or less.

[0093] By having such a configuration, it is possible, in a case where two or more types of emulsified particles with different average particle sizes are also present, to reliably exert the above-described effect of suppressing deterioration of the texture of the textile printed article, an effect of excellent color fastness against rubbing, and an effect of ejectability.

[0094] In the inkjet treatment fluid, the mean particle size of the first emulsified particles can be 100 nm or more and 160 nm or less, and The mean particle size of the second emulsified particles can be 100 nm or more and 160 nm or less.

[0095] By having such a configuration, it is possible, in a case where two or more types of emulsified particles with different average particle sizes are also present, to more reliably exert the above-described effect of suppressing deterioration of the texture of the textile printed article, of excellent color fastness against rubbing and of ejectability.

[0096] In the inkjet treatment fluid, the difference between the mean particle size of the first emulsified particles and the mean particle size of the second emulsified particles can be 0 nm or more and 30 nm or less.

[0097] By having such a configuration, it is possible, in a case where two or more types of emulsified particles with different average particle sizes are also present, to exert the above-described effect of suppressing deterioration of the texture of the printed textile article, of excellent color fastness against rubbing and of ejectability even more reliably.

[0098] The inkjet treatment fluid described above may contain at least one silicone oil that has an ionic functional group.

[0099] By containing at least one silicone oil that has an ionic functional group, a textile printing article can be produced which is superior in colorfastness against wet rubbing.

[0100] The inkjet treatment fluid described above can be used for textile printing.

[0101] By using the inkjet treatment fluid described above for textile printing, the effect of suppressing deterioration of the texture of the textile printed item and the effect of excellent color fastness against rubbing can be exerted more effectively.

[0102] An inkjet textile printing device according to a second aspect of the present disclosure comprises a recording head configured to eject ink onto an image-generating area of ​​a textile printing target, and an application head configured to eject a treatment fluid onto at least the image-generating area of ​​the textile printing target. wherein the treatment fluid is the inkjet treatment fluid according to the first aspect of the present disclosure.

[0103] In this inkjet textile printing apparatus, since the inkjet treatment fluid according to the first aspect of the present disclosure is used, a textile printed article can be produced in which deterioration of the texture is suppressed, and a textile printed article can be produced which exhibits excellent colorfastness to rubbing. Furthermore, since the inkjet treatment fluid has excellent ejection capability from the application head, the effect of the inkjet treatment fluid according to the first aspect of the present disclosure can be reliably exerted on a textile printed article.

[0104] An inkjet textile printing method according to a third aspect of the present disclosure comprises ejecting ink from a recording head onto an image-generating area of ​​a textile printing target and ejecting a treatment fluid from an application head onto at least the image-generating area of ​​the textile printing target. wherein the treatment fluid is the inkjet treatment fluid according to the first aspect of the present disclosure.

[0105] In the inkjet textile printing process, since the inkjet treatment fluid according to the first aspect of the present disclosure is used, a textile printed article can be produced in which deterioration of the texture is suppressed, and a textile printed article can be produced which exhibits excellent colorfastness to rubbing. Furthermore, since the inkjet treatment fluid has excellent ejection capability from the application head, the effect of the inkjet treatment fluid according to the first aspect of the present disclosure can be reliably exerted on a textile printed article. Examples

[0106] The present revelation will be described in more detail below with reference to examples, but the present revelation is in no way limited by examples.

[0107] In the present examples, various textile print articles were produced while varying the type and percentage of silicone oil in the inkjet treatment fluid, the mean particle size of the emulsified particles, and the amount of treatment fluid ejected. The colorfastness to rubbing and the suppression of texture deterioration of the textile print articles were evaluated. Furthermore, the ejection capability of the treatment fluid from the nozzle according to the mean particle size of the emulsified silicone oil particles in the inkjet treatment fluid was also evaluated in these examples.

[0108] 1. Evaluation test of colorfastness against rubbing and suppression of deterioration of the texture of a textile print article when the type of treatment fluid (type and percentage content of silicone oil in the treatment fluid and mean particle size of the emulsified particles) is changed.

[0109] In this test, the amount of treatment fluid emitted during the production of textile printing articles was set to 20 g / m². 2 The parameters were adjusted, and various textile prints were produced while varying the type and percentage of silicone oil in the treatment fluid and the mean particle size of the emulsified particles. Subsequently, the colorfastness to rubbing and the suppression of texture deterioration of the various produced textile prints were evaluated. [Method for producing a treatment fluid]

[0110] Treatment fluids (A-1) to (A-7) and treatment fluid (B-1) used in this evaluation test were prepared by the procedure described below. The percentage of silicone oil was calculated by rounding to one decimal place. <Herstellung einer Behandlungsflüssigkeit (A-1)>

[0111] First, a raw material emulsion A was prepared, which is to be contained in a treatment fluid (A-1). Specifically, 300 g of amino-modified silicone oil (“KF-864”, manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 1,700 mm) was used. 2 / s, specific gravity: 0.98, functional group equivalent: 3,800 g / mol), 600 g of ion-exchanged water, and 100 g of hydrochloric acid (concentration: 1 mol / L) were placed in a beaker. Using a homogenizer (“Ultra Turrax T25”, manufactured by IKA), the contents of the beaker were stirred at a rotational speed of 10,000 rpm for 15 minutes and allowed to stand for 30 minutes. Next, the contents of the beaker were filtered through a 120-mesh stainless steel filter to obtain raw material emulsion A. Emulsified particles containing an amino-modified silicone oil were dispersed in raw material emulsion A. The mean particle size of the emulsified particles in raw material emulsion A was 150 nm.

[0112] Next, a treatment fluid (A-1) was prepared using raw material emulsion A, as described above. Specifically, 33.30 g of raw material emulsion A (30 wt% amino-modified silicone oil content and 9.99 g amino-modified silicone oil content), 33.35 g ion-exchanged water, and 33.35 g propylene glycol were mixed together to obtain a treatment fluid (A-1). The percentage of amino-modified silicone oil in the treatment fluid (A-1) was 10 wt%. <Herstellung einer Behandlungsflüssigkeit (A-2)>

[0113] In the preparation of a treatment fluid (A-2), raw material emulsion A, prepared as described above, was used. Specifically, 15.00 g of raw material emulsion A (30 wt% amino-modified silicone oil content and 4.50 g amino-modified silicone oil content), 50.00 g ion-exchanged water, and 35.00 g propylene glycol were mixed together to obtain a treatment fluid (A-2). The percentage of amino-modified silicone oil in the treatment fluid (A-2) was 5 wt%. <Herstellung einer Behandlungsflüssigkeit (A-3)>

[0114] In the preparation of a treatment fluid (A-3), raw material emulsion A, prepared as described above, was used. Specifically, 50.00 g of raw material emulsion A (30 wt% amino-modified silicone oil content and 15.00 g amino-modified silicone oil content), 35.00 g ion-exchanged water, and 15.00 g propylene glycol were mixed together to obtain a treatment fluid (A-3). The percentage of amino-modified silicone oil in the treatment fluid (A-3) was 15 wt%. <Herstellung einer Behandlungsflüssigkeit (A-4)>

[0115] First, a raw material emulsion B was prepared, which is to be contained in a treatment fluid (A-4). Specifically, 300 g of carboxy-modified silicone oil (“X-22-3701E”, manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 2,000 mmol / L) was used. 2 / s, specific gravity: 0.98, functional group equivalent: 4,000 g / mol), 600 g of ion-exchanged water, and 100 g of aqueous sodium hydroxide solution (concentration: 1 mol / L) were placed in a beaker. Using a homogenizer (“Ultra Turrax T25”, manufactured by IKA), the contents of the beaker were stirred at a rotation speed of 10,000 rpm for 15 minutes and allowed to stand for 30 minutes. Next, the contents of the beaker were filtered through a 120-mesh stainless steel filter to obtain raw material emulsion B. Emulsified particles containing a carboxy-modified silicone oil were dispersed in raw material emulsion B. The mean particle size of the emulsified particles in raw material emulsion B was 120 nm.

[0116] Next, a treatment fluid (A-4) was prepared using raw material emulsion B, which was manufactured as described above. Specifically, treatment fluid (A-4) was obtained in the same manner as treatment fluid (A-1), except that raw material emulsion A (30 wt.% amino-modified silicone oil) was changed to raw material emulsion B (30 wt.% carboxy-modified silicone oil). In treatment fluid (A-4), the percentage of carboxy-modified silicone oil was 10 wt.%. <Herstellung einer Behandlungsflüssigkeit (A-5)>

[0117] First, a raw material emulsion C was prepared, which is to be contained in a treatment fluid (A-5). In particular, 300 g of amino-modified silicone oil (“KF-877”, manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 5,700 mm) was used. 2 / s, specific gravity: 0.98, functional group equivalent: 5,200 g / mol), 600 g of ion-exchanged water, and 100 g of hydrochloric acid (concentration: 1 mol / L) were placed in a beaker. Using a homogenizer (“Ultra Turrax T25”, manufactured by IKA), the contents of the beaker were stirred at a rotational speed of 10,000 rpm for 15 minutes and allowed to stand for 30 minutes. Next, the contents of the beaker were filtered through a 120-mesh stainless steel filter to obtain raw material emulsion C. Emulsified particles containing an amino-modified silicone oil were dispersed in raw material emulsion C. The mean particle size of the emulsified particles in raw material emulsion C was 200 nm.

[0118] Next, a treatment fluid (A-5) was prepared using raw material emulsion C, which was manufactured as described above. Specifically, treatment fluid (A-5) was obtained in the same manner as treatment fluid (A-1), except that raw material emulsion A (30 wt.% amino-modified silicone oil) was changed to raw material emulsion C (30 wt.% amino-modified silicone oil). In treatment fluid (A-5), the percentage of amino-modified silicone oil was 10 wt.%. <Herstellung einer Behandlungsflüssigkeit (A-6)>

[0119] First, a raw material emulsion D was prepared, which is to be contained in a treatment fluid (A-6). In particular, 180 g of unmodified silicone oil (especially dimethyl polysiloxane) (“KF96-3000cs”, manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 3,000 mmol / L) were used. 2 / s, specific density: 0.97) and 120 g of phenol-modified silicone oil (“KF2201”, manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 97 m) 2 / s, specific density: 0.99, functional group equivalent: 1.474 g / mol) mixed together to form a mixture MD with a viscosity of 1.000 mm 2 / s. 300 g of mixture MD, 600 g of ion-exchanged water, and 100 g of aqueous sodium hydroxide solution (concentration: 1 mol / L) were placed in a beaker. Using a homogenizer (“Ultra Turrax T25”, manufactured by IKA), the contents of the beaker were stirred at a rotation speed of 10,000 rpm for 15 minutes and allowed to stand for 30 minutes. Next, the contents of the beaker were filtered through a 120-mesh stainless steel filter to obtain raw material emulsion D. Emulsified particles containing an unmodified silicone oil and a phenol-modified silicone oil were dispersed in raw material emulsion D. The mean particle size of the emulsified particles contained in raw material emulsion D was 160 nm.

[0120] Next, a treatment fluid (A-6) was prepared using raw material emulsion D, which was prepared as described above. Specifically, treatment fluid (A-6) was obtained in the same manner as treatment fluid (A-1), except that raw material emulsion A (30 wt.% amino-modified silicone oil) was changed to raw material emulsion D (30 wt.% mixture of phenol-modified and unmodified silicone oils). The percentage of the phenol-modified and unmodified silicone oil mixture in treatment fluid (A-6) was 10 wt.%. <Herstellung einer Behandlungsflüssigkeit (A-7)>

[0121] First, a raw material emulsion E was prepared, which is to be contained in a treatment fluid (A-7). Specifically, 180 g of unmodified silicone oil (“KF96-3000cs”, manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 3,000 mmol / L) was used. 2 / s, specific density: 0.97) and 120 g of silanol-modified silicone oil (“KF9701”, manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 60 mm) 2 / s, specific density: 0.977, functional group equivalent: 1,500 g / mol) mixed together to form a mixture ME with a viscosity of 1,200 mm 2To obtain a raw material emulsion E, 300 g of mixture ME, 600 g of ion-exchanged water, and 100 g of aqueous sodium hydroxide solution (concentration: 1 mol / L) were placed in a beaker. Using a homogenizer (“Ultra Turrax T25”, manufactured by IKA), the contents of the beaker were stirred at a rotation speed of 10,000 rpm for 15 minutes and allowed to stand for 30 minutes. Next, the contents of the beaker were filtered through a 120-mesh stainless steel filter to obtain a raw material emulsion E. Emulsified particles containing an unmodified silicone oil and a silanol-modified silicone oil were dispersed in the raw material emulsion E. The mean particle size of the emulsified particles contained in the raw material emulsion E was 220 nm. <Herstellung einer Behandlungsflüssigkeit (B-1)>

[0122] First, a raw material emulsion F was prepared, which is to be contained in a treatment fluid (B-1). In particular, 300 g of unmodified silicone oil (“KF96-3000cs”, manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 3,000 mmol / L) was used. 2(Specific density: 0.97 g / s), 600 g of ion-exchanged water, and 100 g of hydrochloric acid (concentration: 1 mol / L) were placed in a beaker. Using a homogenizer (“Ultra Turrax T25”, manufactured by IKA), the contents of the beaker were stirred at a rotational speed of 10,000 rpm for 15 minutes, and only emulsified particles with a mean particle size of 1 µm or more could be produced. After stirring, the contents of the beaker were allowed to stand for 30 minutes, but the aqueous and oil phases remained separated, and the raw material emulsion F could not be produced. Thus, the raw material emulsion F could not be produced, and the preparation of the treatment liquid (B-1) was not carried out. Furthermore, since the preparation of the treatment liquid (B-1) was not carried out, the evaluation of the treatment liquid (B-1) was also not performed.

[0123] The types of raw material emulsions, the mean particle sizes of emulsified particles, the types and percentage contents of silicone oils and the viscosities of silicone oils in the treatment fluids (A-1) to (A-7) and the treatment fluid (B-1) are summarized in the following Table 1. [Table 1] Type of treatment fluid Type of raw material emulsion Average particle size of the emulsified particles (nm) silicone oil Quantity [wt.%] Art Viscosity [mm 2 / s] A-1 A 150 10 amino-modified silicone oil 1.700 A-2 A 150 5 amino-modified silicone oil 1.700 A-3 A 150 15 amino-modified silicone oil 1.700 A-4 B 120 10 carboxy-modified silicone oil 2.000 A-5 C 200 10 amino-modified silicone oil 5.700 A-6 D 160 10 (Total) unmodified silicone oil 1.000 phenol-modified silicone oil A-7 E 220 10 (Total) unmodified silicone oil 1.200 silanol-modified silicone oil B-1 F - - unmodified silicone oil 3.000

[0124] The meaning of each term in Table 1 above and Table 4 shown later is as follows. “Quantity” indicates the percentage of silicone oil in the treatment fluid. “wt%” indicates mass percent. “Viscosity” indicates the viscosity of the silicone oil. In a case where the emulsified particles contain two or more types of silicone oils, “Viscosity” indicates the viscosity of a mixture of the two or more types of silicone oils. “-” indicates that the raw material emulsion F could not be produced and the production of the treatment fluid (B-1) could not be carried out.

[0125] As shown in Table 1 above, treatment fluids (A-1) to (A-7) all contain emulsified particles in a silicone oil and an aqueous medium. Furthermore, the mean particle size of the emulsified particles in all treatment fluids (A-1) to (A-7) is between 100 nm or more and 250 nm or less. However, the raw material emulsion F for treatment fluid (B-1) could not be produced. [Method for measuring any physical property]

[0126] The mean particle size of emulsified particles in raw material emulsions and the viscosity of silicone oil were measured using the methods described below. <Messung der mittleren Partikelgröße von emulgierten Partikeln>

[0127] The mean particle size of the emulsified particles was measured according to the method described in ISO 13321:1996 (Particle size analysis - photon correlation spectroscopy) using a laser diffraction particle size distribution analyzer (“Zetasizer Nano ZS”, manufactured by Malvern Panalytical Ltd.). A sample obtained by diluting the treatment fluid or the raw material emulsion (in the case of mixing two different raw material emulsions) 1000-fold with water was used for the measurement of the mean particle size of the emulsified particles. The mean particle size of emulsified particles contained in the raw material emulsion and the mean particle size of emulsified particles contained in the treatment fluid are approximately the same. <Messung der Viskosität von Silikonöl>

[0128] The viscosity of the silicone oil was measured according to the procedure described in JIS Z8803:2011 (Method for measuring the viscosity of a liquid) in an environment at a temperature of 25 °C. The Ubbelohde viscometer, as described in section 6.2.3 Ubbelohde viscometer of JIS Z8803:2011, was used to measure the viscosity of the silicone oil. [Evaluation method]

[0129] Using each of the prepared treatment fluids, the colorfastness to rubbing and the suppression of texture deterioration of various textile prints were evaluated. Specifically, an ink for evaluation, textile prints using the ink to be evaluated and the respective treatment fluids were prepared, and their colorfastness to rubbing and the suppression of texture deterioration were assessed. The following sections describe in detail the process for preparing the ink to be evaluated, the process for preparing the textile prints to be evaluated, and various evaluation procedures. <Verfahren zur Herstellung einer zu bewertenden Tinte>

[0130] Inks a and b, which are to be used in the evaluation of a treatment fluid, were produced by the procedure shown below. (Method for the production of ink a)

[0131] Into a 1 L three-necked flask equipped with a stirring blade, 125 g of ion-exchanged water and 2 g of non-ionic surfactant (SURFYNOL (registered trademark) 440, manufactured by Nissin Chemical Industry Co., Ltd., content: acetylene glycol-ethylene oxide adduct) were added. While the contents of the flask were stirred, 165 g of propylene glycol, 100 g of black pigment dispersion (AE2078F, manufactured by SANYO COLOR WORKS, LTD., content: CI Pigment Black 7, solids concentration: 20 wt%), and 108 g of binder resin particle dispersion (SUPERFLEX 470, DKS Co., Ltd., content: polyurethane dispersion, solids concentration: 38 wt%) were successively added to the flask. The contents of the flask were stirred for 10 minutes to obtain ink a. (Method for the production of ink b)

[0132] Into a 1 L three-necked flask equipped with a stirring blade, 140 g of ion-exchanged water and 2 g of non-ionic surfactant (SURFYNOL (registered trademark) 440, manufactured by Nissin Chemical Industry Co., Ltd., composition: acetylene glycol-ethylene oxide adduct) were added. While the contents of the flask were being stirred, 225 g of propylene glycol, 83 g of black pigment dispersion (ACAK1, manufactured by Dainichiseika Color & Chemicals Mfg. Co., Ltd., composition: CI Pigment Black 7, solids concentration: 15 wt%), and 50 g of binder resin particle dispersion (Eternacoll (registered trademark) UW-1527F, manufactured by UBE Corporation, composition: polyurethane dispersion, solids concentration: 40 wt%) were successively added to the flask. The contents of the flask were stirred for 10 minutes to obtain ink b. <Verfahren zur Herstellung eines zu bewertenden Textildruck-Artikels>

[0133] The textile print articles to be evaluated were produced using the inks and treatment fluids shown in Table 2 below. For example, treatment fluid (A-1) and ink a were used for the evaluation of Example 1-1 in Table 2.

[0134] The textile printing target was a cotton poplin fabric (manufactured by SHIKISENSHA CO., LTD., size: A4, warp and weft cotton yarn count: 40 / 1, warp density: 130 threads / inch, weft density: 75 threads / inch, basis weight: 122 g / m²). 2An inkjet printer (“Colorio (registered trademark) PX-045A”, manufactured by Seiko Epson Corporation) was used to produce the textile print articles to be evaluated. The ink was filled into the first ink chamber of the first cartridge. The treatment fluid was filled into the second ink chamber of the second cartridge. The first and second cartridges were loaded into the inkjet printer. The ink filled into the first ink chamber was ejected by the inkjet printer's recording head. The treatment fluid filled into the second ink chamber was ejected by the inkjet printer's application head.

[0135] Using an inkjet printer, the ink was ejected from the recording head onto the textile printing target at an ink output of 20 g / m². 2The treatment fluid was ejected to create a solid ink image. Next, using the inkjet printer, the treatment fluid was ejected from the application head onto the textile printing target, resulting in a treatment fluid quantity of 20 g / m². 2 as described above. In this way, an application film of the same size as the solid image was created on the solid ink image using the treatment fluid. Next, the textile print target was heated at 160°C for 3 minutes to dry the ink and treatment fluid, resulting in a textile print item for evaluation. <Bewertung der Farbechtheit gegen Reiben>

[0136] In accordance with the dry and wet tests performed using the Type II (Gakushin) rub test method described in JIS L-0849:2013 (Test procedure for color fastness to rub), the solid image produced on the textile print article under evaluation was rubbed with a white cotton rubbing cloth. The degree of discoloration and fading of the white cotton rubbing cloth was assessed according to the "criteria for discoloration and fading" described in Section 10 (Determination of color fastness to rub) of JIS L-0801:2011 (General rules for the test procedure for color fastness to rub). The degree of discoloration of the white cotton rubbing cloth was determined on a scale of nine grades (Grade 1, Grades 1 to 2, Grade 2, Grades 2 to 3, Grade 3, Grades 3 to 4, Grade 4, Grades 4 to 5, and Grade 5 in descending order of the degree of soiling).Colorfastness to rubbing is better when the degree of discoloration of the white cotton fabric for rubbing is lower (closer to grade 5). Based on the degree of discoloration of the white cotton fabric for rubbing after the rub test, the colorfastness to dry rubbing and the colorfastness to wet rubbing were assessed according to the following criteria. The result of the dry test was taken as the colorfastness to dry rubbing, and the result of the wet test was taken as the colorfastness to wet rubbing. A rating of A or B was considered "pass," and a rating of C was considered "fail." The determined colorfastness to rubbing and the assessment results are summarized in Table 2 below. (Assessment criteria for colorfastness against dry rubbing) Rating A: Colorfastness to dry rubbing is grade 4 or higher. Rating B: Colorfastness against dry rubbing is grade 3 to 4. Rating C: Colorfastness to dry rubbing is grade 3 or less. (Assessment criteria for colorfastness against wet rubbing) Rating A: Colorfastness to wet rubbing is grade 3 or higher. Rating B: Colorfastness against wet rubbing is grade 2 to 3. Rating C: Colorfastness to wet rubbing is grade 2 or less. <Bewertung der Unterdrückung einer Verschlechterung der Textur>

[0137] The unused textile printing target was folded twice along the warp (lengthwise), and the distance (loop height) between the lower and upper fabric layers at the fold was measured. The measured loop height of the unused textile printing target was taken as the loop height before textile printing. Next, the area on which the solid image of the textile printing item to be evaluated was created was folded twice along the warp (lengthwise), and the loop height was measured. The measured loop height of the textile printing item to be evaluated was taken as the loop height after textile printing. The rate of change of the loop height (unit: %) after textile printing was calculated according to the formula "Rate of change of loop height = 100 × Loop height after textile printing / Loop height before textile printing".This indicates that the deterioration of the texture of the printed textile is further suppressed because the rate of change in loop height is lower, as the textile print target does not stiffen or swell after printing. The suppression of the texture deterioration of the printed textile by the rate of change in loop height was assessed according to the following criteria. A rating of A or B was considered a "pass," and a rating of C was considered a "fail." The measured rate of change in loop height and the assessment results regarding the suppression of texture deterioration are summarized in Table 2 below. (Evaluation criteria for suppressing texture deterioration) Rating A: The rate of change in loop height is 125% or less. Rating B: The rate of change of loop height is more than 125% and 130% or less. Rating C: The rate of change in loop height is more than 130%. [Table 2] Type of treatment fluid ink Colorfastness against rubbing texture Dry Wet degree Evaluation degree Evaluation Height [%] Evaluation Example 1-1 A-1 a 4 A 3 A 110 A Example 1-2 A-2 a 4 A 3 A 125 A Examples 1-3 A-3 a 4-5 A 2-3 B 105 A Examples 1-4 A-4 a 4 A 3-4 A 115 A Examples 1-5 A-5 a 4-5 A 3 A 120 A Examples 1-6 A-6 a 4 A 2-3 B 115 A Examples 1-7 A-7 a 4 A 2-3 B 110 A Examples 1-8 A-1 b 4 A 3 A 110 A Comparison example 1-1 B-1 a - - - - - -

[0138] The meaning of each term in Table 2 above and Table 3 below is as follows. “Texture” indicates the rating regarding the suppression of deterioration in the texture of a textile print article. “Height” indicates the rate of change in loop height after textile printing. “1 to 2”, “2 to 3”, “3 to 4”, and “4 to 5” in the colorfastness to rubbing column indicate grades 1 to 2, 2 to 3, 3 to 4, and 4 to 5, respectively, of the degree of colorfastness of the white cotton fabric to rubbing. “-” indicates that the raw material emulsion F could not be produced, the preparation of the treatment fluid (B-1) was not carried out, and the evaluation of the treatment fluid (B-1) could not be carried out as described above. [Discussion]

[0139] As shown in Table 2 above, the colorfastness to dry rubbing, the colorfastness to wet rubbing, and the suppression of texture deterioration of textile prints produced using treatment fluids (A-1) to (A-7) were all rated as A or B, regardless of the type of ink. Therefore, it is found that, according to the inkjet treatment fluid of the present embodiment, including treatment fluids (A-1) to (A-7), a textile print can be produced which exhibits excellent colorfastness to rubbing, and texture deterioration of the textile print can be suppressed.

[0140] 2. Evaluation test of colorfastness against rubbing and suppression of deterioration of the texture of a textile printed article when the amount of treatment fluid ejected is varied.

[0141] In this test, the treatment fluid (A-1) described above was used as the inkjet treatment fluid, various textile printed articles were produced for evaluation while varying the amount of treatment fluid ejected, and the color fastness to rubbing and the suppression of deterioration of the texture of the textile printed articles were evaluated. <Verfahren zur Herstellung von zu bewertenden Textildruck-Artikeln der Beispiele 1-1, 1-9 bis 1-11 und 1-8>

[0142] Regarding the production of the textile printing articles to be assessed in Examples 1-1, 1-9 to 1-11, and 1-8, the textile printing articles to be assessed were produced by the same process as the process for producing a textile printing article to be assessed described in 1 above, with the exception that the following points were modified. In particular, the ink shown later in Table 3 was filled into the first ink chamber of the first cartridge, and the treatment fluid (A-1) was filled into the second ink chamber of the second cartridge. In each example, the amount of treatment fluid ejected was adjusted to the amount shown later in Table 3. The amount of ink ejected was 20 g / m². 2 not changed. <Verfahren zur Herstellung eines zu bewertenden Textildruck-Artikels des Beispiels 1-12>

[0143] Regarding the manufacture of a textile print article of Example 1-12, a textile print target on which a solid ink image was produced was manufactured by the same process as the process for manufacturing a textile print article to be evaluated, as described in 1 above, with the difference that the following points were changed. In particular, the ink shown later in Table 3 was filled into the first ink chamber of the first cartridge, and the treatment fluid was not filled into the second ink chamber of the second cartridge. In other words, the amount of treatment fluid ejected was reduced to 0 g / m². 2 The setting was adjusted, and the treatment fluid was not ejected from the application head. The amount of ink ejected was set to 20 g / m². 2 not changed.

[0144] Next, the textile printing target, on which a permanent ink image had been created, was impregnated with the treatment fluid (A-1), then removed from the treatment fluid (A-1) and lightly squeezed. Specifically, the textile printing target was squeezed to achieve a 100% absorption rate and an applied amount of treatment fluid (A-1) of 120 g / m². 2 The crushed textile print target was heated at 160°C for 3 minutes to dry the ink and treatment fluid, resulting in a textile print item to be evaluated. <Bewertung der Farbechtheit gegen Reiben und Unterdrückung einer Verschlechterung der Textur>

[0145] The textile print articles to be evaluated, produced using the treatment fluid (A-1) of Examples 1-1, 1-9 to 1-12, and 1-8, were evaluated in the same manner as the evaluation of colorfastness to rubbing described in 1 above, and in the same manner as the evaluation of the suppression of texture deterioration described in 1 above. The evaluation results are shown in Table 3 below. The evaluation results for the textile print articles to be evaluated, produced using the treatment fluid (A-1) used in Examples 1-1 and 1-8, were already shown in Table 2 above, but are shown again in Table 3 below for clarity. [Table 3] Treatment fluid ink Colorfastness against rubbing texture Type of treatment fluid Emitted amount (total amount) [g / m 2 ] Dry Wet Height[%] Evaluation degree Evaluation degree Evaluation Example 1-1 A-1 20 a 4 A 3 A 110 A Examples 1-9 A-1 15 a 4 A 2-3 B 115 A Example 1-10 A-1 30 a 4-5 A 2-3 B 105 A Examples 1-11 A-1 10 a 3-4 B 2-3 B 120 A Examples 1-12 A-1 120 (amount applied) a 3-4 B 2-3 B 130 B Examples 1-8 A-1 20 b 4 A 3 A 110 A [Discussion]

[0146] As shown in Table 3 above, the color fastness to dry rubbing, the color fastness to wet rubbing and the suppression of texture deterioration of textile printed articles printed at a discharged quantity (including the applied quantity) of 10 g / m² were determined. 2 or more and 120 g / m² 2 or less were all rated as A or B. Therefore, it is found that a textile print article can be produced which exhibits excellent colorfastness to rubbing, and deterioration of the texture of a textile print article can be suppressed by applying the inkjet treatment fluid of the present embodiment in a wide range of ejected quantity (including applied quantity) of 10 g / m². 2 or more and 120 g / m² 2 or less is emitted or applied.

[0147] As shown in Table 3 above, the colour fastness to dry rubbing of a textile print article was determined using the treatment fluid (A-1) at an ejected quantity of 15 g / m². 2 or more and 30 g / m² 2 or less formed than rated A. Therefore, it is determined that a textile print article can be produced which exhibits particularly excellent colorfastness against dry rubbing by using the inkjet treatment fluid of the present embodiment in an ejected quantity of 15 g / m². 2 or more and 30 g / m² 2 or less is emitted.

[0148] 3. Evaluation test of color fastness against rubbing and ejectability when the mean particle size of the emulsified particles is varied.

[0149] In this test, various textile print articles were produced while the average particle size of the emulsified particles was varied. The colorfastness to rubbing of the various produced textile print articles was then evaluated. Simultaneously, the ejection rate of the treatment fluid from the nozzle was also assessed according to the average particle size of the emulsified particles in each treatment fluid. [Method for producing a treatment fluid]

[0150] In this test, treatment fluids were used in which the mean particle size of the emulsified particles containing a carboxy-modified silicone oil, or the mean particle size of both the emulsified particles containing a carboxy-modified silicone oil and the emulsified particles containing an unmodified silicone oil, was varied to different values. The procedures for preparing treatment fluids (C-1) to (C-6) and treatment fluids (D-1) to (D-4) used in this test are described in detail below. <Herstellung einer Behandlungsflüssigkeit (C-1)>

[0151] A treatment fluid (C-1) was obtained by the same procedure as the procedure for preparing the treatment fluid (A-4) described in section 1 above, except that 50 g of an aqueous sodium hydroxide solution, 570 g of ion-exchanged water, and 80 g of a surfactant (polyoxyethylene alkyl ether) were added, and stirring and mixing were carried out during the preparation of the raw material emulsion B. The mean particle size of the emulsified particles containing a carboxy-modified silicone oil in the treatment fluid (C-1) was 102 nm. <Herstellung einer Behandlungsflüssigkeit (C-2)>

[0152] A treatment fluid (C-2) was obtained by the same procedure as the procedure for preparing the treatment fluid (A-4) described in section 1 above, except that 50 g of an aqueous sodium hydroxide solution, 590 g of ion-exchanged water, and 60 g of a surfactant (polyoxyethylene alkyl ether) were added, and stirring and mixing were carried out during the preparation of the raw material emulsion B. The mean particle size of the emulsified particles containing a carboxy-modified silicone oil in the treatment fluid (C-2) was 137 nm. <Herstellung einer Behandlungsflüssigkeit (C-3)>

[0153] A treatment fluid (C-3) was obtained by the same procedure as the procedure for preparing the treatment fluid (A-4) described in 1. above, except that 50 g of an aqueous

[0154] Sodium hydroxide solution, 610 g of ion-exchanged water, and 40 g of a surfactant (polyoxyethylene alkyl ether) were added, and stirring and mixing were carried out during the preparation of raw material emulsion B. The mean particle size of the emulsified particles containing a carboxy-modified silicone oil in the treatment fluid (C-3) was 189 nm. <Herstellung einer Behandlungsflüssigkeit (C-4)>

[0155] A treatment fluid (C-4) was obtained by the same procedure as the procedure for preparing treatment fluid (A-4) described in section 1 above, except that 50 g of an aqueous sodium hydroxide solution, 630 g of ion-exchanged water, and 20 g of a surfactant (polyoxyethylene alkyl ether) were added, and stirring and mixing were carried out during the preparation of the raw material emulsion B. The mean particle size of the emulsified particles of the carboxy-modified silicone oil in the treatment fluid (C-4) was 247 nm. <Herstellung einer Behandlungsflüssigkeit (C-5)>

[0156] The raw material emulsion used in the preparation of the treatment fluid (C-1) was used as the first raw material emulsion. The mean particle size of the emulsified particles of the carboxy-modified silicone oil contained in this first raw material emulsion was 102 nm.

[0157] Then a second raw material emulsion was prepared, containing an unmodified silicone oil. Specifically, 300 g of unmodified silicone oil (particularly dimethylpolysiloxane) (“KF96-3000cs”, manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 3,000 mmol / L) was used. 2 / s, specific gravity: 0.97), 610 g of ion-exchanged water and 90 g of surfactant (polyoxyethylene alkyl ether) were placed in a beaker. Using a homogenizer (“Ultra Turrax T25”, manufactured by IKA), the contents of the beaker were stirred at a rotational speed of 10,000 rpm for 15 minutes and allowed to stand for 30 minutes. Next, the contents of the beaker were filtered through a 120-mesh stainless steel filter to obtain a second raw material emulsion containing an unmodified silicone oil. The mean particle size of the emulsified particles of the unmodified silicone oil contained in this second raw material emulsion was 115 nm.

[0158] To 16.67 g of the first raw material emulsion and 16.67 g of the second raw material emulsion, 33.31 g of ion-exchanged water and 33.35 g of propylene glycol were added and mixed to obtain a treatment fluid (C-5). The mean particle size of the emulsified particles in the treatment fluid (C-5) (mean particle size of the emulsified particles during mixing) was 106 nm. <Herstellung einer Behandlungsflüssigkeit (C-6)>

[0159] The raw material emulsion used in the preparation of the treatment fluid (C-4) was used as the first raw material emulsion. The mean particle size of the emulsified particles of the carboxy-modified silicone oil contained in this first raw material emulsion was 247 nm.

[0160] Then a second raw material emulsion was prepared, containing an unmodified silicone oil. Specifically, 300 g of unmodified silicone oil (particularly dimethylpolysiloxane) (“KF96-3000cs”, manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 3,000 mmol / L) was used. 2 / s, specific gravity: 0.97), 655 g of ion-exchanged water and 45 g of surfactant (polyoxyethylene alkyl ether) were placed in a beaker. Using a homogenizer (“Ultra Turrax T25”, manufactured by IKA), the contents of the beaker were stirred at a rotational speed of 10,000 rpm for 15 minutes and allowed to stand for 30 minutes. Next, the contents of the beaker were filtered through a 120-mesh stainless steel filter to obtain a second raw material emulsion containing an unmodified silicone oil. The mean particle size of the emulsified particles of the unmodified silicone oil contained in this second raw material emulsion was 240 nm.

[0161] To 16.67 g of the first raw material emulsion and 16.67 g of the second raw material emulsion, 33.31 g of ion-exchanged water and 33.35 g of propylene glycol were added and mixed to obtain a treatment liquid (C-6). The mean particle size of the emulsified particles in the treatment liquid (C-6) (mean particle size of the emulsified particles during mixing) was 245 nm. <Herstellung einer Behandlungsflüssigkeit (D-1)>

[0162] A treatment fluid (D-1) was obtained by the same procedure as the procedure for preparing treatment fluid (A-4) described in section 1 above, except that 50 g of an aqueous sodium hydroxide solution, 560 g of ion-exchanged water, and 90 g of a surfactant (polyoxyethylene alkyl ether) were added, and stirring and mixing were carried out during the preparation of the raw material emulsion B. The mean particle size of the emulsified particles of the carboxy-modified silicone oil in the treatment fluid (D-1) was 75 nm. <Herstellung einer Behandlungsflüssigkeit (D-2)>

[0163] A treatment fluid (D-2) was obtained by the same procedure as the procedure for preparing the treatment fluid (A-4) described in section 1 above, except that 50 g of an aqueous sodium hydroxide solution and 650 g of ion-exchanged water were added, but no surfactant was added, and stirring and mixing were carried out during the preparation of the raw material emulsion B. The mean particle size of the emulsified particles of the carboxy-modified silicone oil in the treatment fluid (D-2) was 323 nm. <Herstellung einer Behandlungsflüssigkeit (D-3)>

[0164] The raw material emulsion used in the preparation of the treatment fluid (D-1) was used as the first raw material emulsion. The mean particle size of the emulsified particles of the carboxy-modified silicone oil contained in this first raw material emulsion was 75 nm.

[0165] Then a second raw material emulsion was prepared, containing an unmodified silicone oil. Specifically, 300 g of unmodified silicone oil (particularly dimethylpolysiloxane) (“KF96-3000cs”, manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 3,000 mmol / L) was used. 2 / s, specific gravity: 0.97), 580 g of ion-exchanged water and 120 g of surfactant (polyoxyethylene alkyl ether) were placed in a beaker. Using a homogenizer (“Ultra Turrax T25”, manufactured by IKA), the contents of the beaker were stirred at a rotational speed of 10,000 rpm for 15 minutes and allowed to stand for 30 minutes. Next, the contents of the beaker were filtered through a 120-mesh stainless steel filter to obtain a second raw material emulsion containing an unmodified silicone oil. The mean particle size of the emulsified particles of the unmodified silicone oil contained in this second raw material emulsion was 86 nm.

[0166] To 16.67 g of the first raw material emulsion and 16.67 g of the second raw material emulsion, 33.31 g of ion-exchanged water and 33.35 g of propylene glycol were added and mixed to obtain a treatment liquid (D-3). The mean particle size of the emulsified particles in the treatment liquid (D-3) (mean particle size of the emulsified particles during mixing) was 80 nm. <Herstellung einer Behandlungsflüssigkeit (D-4)>

[0167] The raw material emulsion used in the preparation of the treatment fluid (D-2) was used as the first raw material emulsion. The mean particle size of the emulsified particles of the carboxy-modified silicone oil contained in this first raw material emulsion was 323 nm.

[0168] Then a second raw material emulsion was prepared, containing an unmodified silicone oil. Specifically, 300 g of unmodified silicone oil (particularly dimethylpolysiloxane) (“KF96-3000cs”, manufactured by Shin-Etsu Chemical Co., Ltd., viscosity: 3,000 mmol / L) was used. 2 / s, specific gravity: 0.97), 680 g of ion-exchanged water and 20 g of surfactant (polyoxyethylene alkyl ether) were placed in a beaker. Using a homogenizer (“Ultra Turrax T25”, manufactured by IKA), the contents of the beaker were stirred at a rotational speed of 10,000 rpm for 15 minutes and allowed to stand for 30 minutes. Next, the contents of the beaker were filtered through a 120-mesh stainless steel filter to obtain a second raw material emulsion containing an unmodified silicone oil. The mean particle size of the emulsified particles of the unmodified silicone oil contained in this second raw material emulsion was 350 nm.

[0169] To 16.67 g of the first raw material emulsion and 16.67 g of the second raw material emulsion, 33.31 g of ion-exchanged water and 33.35 g of propylene glycol were added and mixed to obtain a treatment fluid (D-4). The mean particle size of the emulsified particles in the treatment fluid (D-4) (mean particle size of the emulsified particles during mixing) was 340 nm.

[0170] Next, textile printing articles to be evaluated were produced using the manufactured treatment fluids (C-1) to (C-6) and the treatment fluids (D-1) to (D-4) and their colorfastness to rubbing was evaluated. <Verfahren zur Herstellung von zu bewertenden Textildruck-Artikeln der Beispiele 2-1 bis 2-6 und der Vergleichsbeispiele 2-1 bis 2-4>

[0171] Regarding the production of textile-printed articles of Examples 2-1 to 2-6 and Comparative Examples 2-1 to 2-4, the textile-printed articles to be assessed were produced by the same process as the process for producing a textile-printed article to be assessed described in 1 above, with the following modifications. In particular, the ink a was filled into the first ink chamber of the first cartridge, and any of the treatment fluids (C-1) to (C-6) and treatment fluids (D-1) to (D-4) shown in Table 4 below were filled into the second ink chamber of the second cartridge. The process for producing the ink used is the same as the process described in 1 above. In Examples and Comparative Examples, the quantity of treatment fluid dispensed was set to 10 g / m². 2 The amount of ink ejected was adjusted to 20 g / m².2 set. <Bewertung der Farbechtheit gegen Reiben>

[0172] The textile print articles in examples 2-1 to 2-6 and comparison examples 2-1 to 2-4 were evaluated in the same manner as the evaluation of colorfastness to rubbing described in section 1 above. The evaluation results for the textile print articles in examples and comparison examples are summarized in Table 4 below.

[0173] In this test, the ejection capability of the treatment fluids (C-1) to (C-6) and treatment fluids (D-1) to (D-4) used in the examples and comparison examples was also evaluated from the application head. The procedure for evaluating ejection capability is described in detail below. <Bewertung der Ausstoßfähigkeit>

[0174] The ejection capability of the treatment fluid was evaluated using an ejection evaluation machine (“KJ4B”, manufactured by KYOCERA Corporation), which is capable of examining the ejection of a droplet of the treatment fluid from the nozzle via a camera image. The conditions in the ejection evaluation machine were set as follows. (Conditions of the emission assessment machine)

[0175] Head temperature: 32 °C Amount of treatment fluid expelled from the head: 10 g / m² 2 Drive frequency: 30 kHz A specific procedure for assessing ejection capability is as follows.

[0176] First, using the ejection evaluation machine, the camera position was adjusted so that three nozzles were visible in the field of view. Next, the ejection of the treatment fluid was started, and the camera image was visually inspected to determine whether the treatment fluid was ejected normally for one minute. After one minute, the number of nozzles ejecting the treatment fluid normally was counted. Here, nozzles ejecting the treatment fluid normally are distinguished from nozzles ejecting it incorrectly (nozzles ejecting the treatment fluid in an uneven manner, nozzles not ejecting the treatment fluid at all, nozzles from which the treatment fluid overflows, and the like).The camera position was moved, and the examination of the treatment fluid ejection capability was repeated for one minute using the camera image, focusing on different nozzles. A total of 36 nozzles were examined at 12 different locations. Finally, the nozzles that ejected the treatment fluid normally were summed, and the treatment fluid ejection capability was evaluated according to the following criteria. (criteria)

[0177] A: 36 B: 34 to 35 C: 33 or less

[0178] The types of treatment fluids (mean particle sizes of emulsified particles, types of silicone oils, and the like) used in examples and comparative examples, and the evaluation results of color fastness to rubbing and ejectability are summarized in the following Table 4. [Table 4] Treatment fluid Evaluation result Type of treatment fluid Type of silicone oil in treatment fluid Amount of silicone oil in treatment fluid [wt%] Emulsified particles in treatment fluid Ejectability Colorfastness against rubbing Quantity [wt.%] Total amount [wt.%] Mean particle size of the emulsified particles containing carboxy-modified silicone oil [nm] Mean particle size of the emulsified particles containing unmodified silicone oil [nm] Average particle size when two emulsified particles are mixed [nm] Dry Wet degree Evaluation degree Evaluation Example 2-1 C-1 Carboxy-modified silicone oil 10 10 102 - - A 4 A 3 A Example 2-2 C-2 Carboxy-modified silicone oil 10 10 137 - - A 4 A 3 A Example 2-3 C-3 Carboxy-modified silicone oil 10 10 189 - - B 4 A 3 A Example 2-4 C-4 Carboxy-modified silicone oil 10 10 247 - - B 4 A 3 A Comparative example 2-1 D-1 Carboxy-modified silicone oil 10 10 75 - - A 3-4 B 2 C Comparative example 2-2 D-2 Carboxy-modified silicone oil 10 10 323 - - C 4 A 3 A Example 2-5 C-5 Carboxy-modified silicone oil 5 10 102 115 106 A 4-5 A 3-4 A Unmodified silicone oil 5 Example 2-6 C-6 Carboxy-modified silicone oil 5 10 247 240 245 B 4-5 A 3 A Unmodified silicone oil 5 Comparative example 2-3 D-3 Carboxy-modified silicone oil 5 10 75 86 80 A 3-4 B 2 C Unmodified silicone oil 5 Comparison example 2-4 D-4 Carboxy-modified silicone oil 5 10 323 350 340 C 4 A 3 A Unmodified silicone oil 5 [Discussion]

[0179] As shown in Table 4 above, the color fastness to dry rubbing and the color fastness to wet rubbing in all examples 2-1 to 2-6, in which the treatment fluids (C-1) to (C-6) were used with a mean particle size of the emulsified particles of silicone oil (mean particle size when the two types of emulsified particles are mixed, in one case where two types of emulsified particles are included) in the range of 100 nm or more and 250 nm or less, were rated as A or B.On the other hand, with regard to the textile print article of Comparative Example 2-1, in which the treatment fluid (D-1) with a mean particle size of the emulsified particles of 75 nm was used, and the textile print article of Comparative Example 2-3, in which the treatment fluid (D-4) with mean particle sizes of the emulsified particles of 75 nm and 86 nm was used, the colorfastness to dry rubbing and the colorfastness to wet rubbing, in particular the colorfastness to wet rubbing, were rated as poor. This is assumed to be due to the high hydrophilicity of the treatment fluid and thus the poor water resistance of the textile print article.With regard to the textile printing article of comparison example 2-2, in which the treatment fluid (D-2) with a mean particle size of 323 nm of the emulsified particles was used, and the textile printing article of comparison example 2-4, in which the treatment fluid (D-4) with mean particle sizes of 323 nm and 350 nm of the emulsified particles was used, the ejection capability was rated as surprisingly poor. This is assumed to be due to the meniscus becoming unstable in a case where the particle size is large.

[0180] In other words, if the mean particle size of the emulsified silicone oil particles (mean particle sizes of the two types of emulsified particles in a case containing two types of emulsified particles) in the treatment fluid was 100 nm or more and 250 nm or less, it was possible to produce a textile printing article which exhibits excellent treatment fluid ejection capability and excellent color fastness to dry rubbing and color fastness to wet rubbing.

[0181] It is understood that the embodiments and examples disclosed here are in all respects illustrative and not limiting. The scope of this disclosure is determined by the claims and not by the above description and is intended to encompass meanings corresponding to the claims and all modifications within the scope of protection. Commercial applicability

[0182] The treatment fluid, the inkjet textile printing device and the inkjet textile printing method according to the present disclosure can be used to manufacture textile printed articles. Reference sign 1 Recording head 1a first recording head 1b second recording head 1c third recording head 1d fourth recording head 2 Application head 3 assembly table 10 inkjet textile printing device P Textile printing target QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP 2013-75524 A

[0004]

Claims

Inkjet treatment fluid comprising: emulsified particles containing a silicone oil; and an aqueous medium, wherein the mean particle size of the emulsified particles is 100 nm or more and 250 nm or less. Inkjet treatment fluid according to claim 1, wherein the mean particle size of the emulsified particles is 100 nm or more and 160 nm or less. Inkjet treatment fluid according to claim 1, wherein the emulsified particles comprise first emulsified particles and second emulsified particles with a mean particle size that differs from a mean particle size of the first emulsified particles, the mean particle size of the first emulsified particles being 100 nm or more and 250 nm or less, and the mean particle size of the second emulsified particles being 100 nm or more and 250 nm or less. Inkjet treatment fluid according to claim 3, wherein the mean particle size of the first emulsified particles is 100 nm or more and 160 nm or less, and the mean particle size of the second emulsified particles is 100 nm or more and 160 nm or less. Inkjet treatment fluid according to claim 3 or 4, wherein the difference between the mean particle size of the first emulsified particles and the mean particle size of the second emulsified particles is 0 nm or more and 30 nm or less. Inkjet treatment fluid according to any one of claims 1 to 5, wherein the silicone oil contains at least one silicone oil having an ionic functional group. Inkjet treatment fluid according to claim 6, wherein the silicone oil having an ionic functional group is a carboxy-modified silicone oil. Inkjet treatment fluid according to any one of claims 1 to 7, wherein the silicone oil comprises at least one unmodified silicone oil. Inkjet treatment fluid according to claim 8, wherein the unmodified silicone oil is dimethylpolysiloxane. Inkjet treatment fluid according to claim 3, wherein the silicone oil comprises a silicone oil having an ionic functional group and an unmodified silicone oil, and the first emulsified particles contain the silicone oil having an ionic functional group and the second emulsified particles contain the unmodified silicone oil. Inkjet treatment fluid according to any one of claims 1 to 10, wherein the silicone oil comprises a silicone oil having an ionic functional group and an unmodified silicone oil, and the ratio of the mass of the silicone oil having an ionic functional group to the mass of the unmodified silicone oil is 0.5 or more and less than 1.

0. Inkjet treatment fluid according to any of claims 1 to 11, which is intended for textile printing. Inkjet textile printing device comprising: a recording head configured to eject ink onto an image-generating area of ​​a textile printing target; an application head configured to eject a treatment fluid onto at least the image-generating area of ​​the textile printing target; and a cartridge filled with the treatment fluid, wherein the treatment fluid is the inkjet treatment fluid according to any one of claims 1 to 12. Inkjet textile printing device according to claim 13, further comprising a heating unit configured to heat the textile printing target onto which the ink and treatment fluid are ejected. Inkjet textile printing device according to claim 13 or 14, which is configured to post-treat the image generation area with the treatment fluid after an image has been generated with ink in the image generation area of ​​the textile printing target.

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