JP2023088238A - Fabric treatment agent, printing ink set, pre-treated fabric, printing method, and printed fabric - Google Patents

Abstract

To provide: a fabric treatment agent, a printing ink set, a pre-treated fabric, and a printing method capable of suppressing discoloration of a printed fabric; and the printed fabric suppressed in discoloration.SOLUTION: The fabric treatment agent of the present invention is used for printing by a sublimation color material, and characterized by containing a color material capturing compound having a Rf value calculated by paper chromatography under the following conditions being set to 0.7 or smaller. [Conditions of paper chromatography] Procedure 1: a 10% solution of the color material capturing compound is dipped in cellulose filter paper, and then dried to make a carrier. Procedure 2: a 0.1% tetrahydrofuran solution of C.I. Disperse Red 60 is spotted on the carrier, and then dried to make a development sample. Procedure 3: the development sample is developed for 3 minutes in acetonitrile at 25°C: Procedure 4: the Rf value is calculated by the following expression. (Expression) Rf value=development distance of C.I. Disperse Red 60/development distance of acetonitrile.SELECTED DRAWING: None

Description

TECHNICAL FIELD The present invention relates to a fabric treatment agent, a textile printing ink set, a pretreated fabric, a textile printing method, and a printed fabric.
More specifically, the present invention relates to a fabric treatment agent capable of suppressing discoloration and fading of printed fabric.

2. Description of the Related Art Conventionally, there has been known a textile printing method for dyeing a fabric using a textile printing ink containing a sublimation colorant. In such a printing method, since the sublimation colorant generally exhibits hydrophobicity, it is easily fixed to the polyester fabric, which also exhibits hydrophobicity, and printing can be performed appropriately. On the other hand, for fabrics containing fibers such as hydrophilic natural fibers and synthetic cellulose fibers, fixation of the sublimation colorant tends to be insufficient due to the difference in polarity between the sublimation colorant and the fabric.

As a technique for solving such a problem, in Patent Document 1, in sublimation transfer type textile printing, a sublimation color material is fixed by swelling a fabric with a swelling agent (polyhydric alcohol) before sublimation transfer. , a technique is disclosed in which a sublimation coloring material is enclosed and fixed inside the fabric by applying a synthetic resin liquid to the fabric after sublimation transfer.

Further, as a technique for providing a simple method that does not require a post-process, in Patent Document 2, in addition to a swelling agent (polyhydric alcohols), a water repellent agent (for example, a polyfluoroalkyl group) is added before sublimation transfer. Techniques have been disclosed for applying poly(meth)acrylates containing poly(meth)acrylates) to fabrics.

However, even when these techniques are used, there remains a problem that the printed fabric discolors and fades over time due to insufficient fixation of the sublimation colorant, especially in a high temperature environment.

JP-A-7-216763 JP 2021-42514 A

The present invention has been made in view of the above problems and circumstances, and the problem to be solved is a fabric treatment agent that can suppress discoloration and fading of a printed fabric, a textile ink set, a pretreated fabric, and a textile printing method. To provide a printed fabric in which discoloration is suppressed.

In order to solve the above problems, the present inventors investigated the causes of the above problems and found that the Rf value, which is an index of the colorant capturing power (the smaller the value, the greater the colorant capturing power) was 0.7. The inventors have found that discoloration and fading of printed fabrics can be suppressed by using the following colorant-scavenging compounds, and have completed the present invention.
That is, the above problems related to the present invention are solved by the following means.

1. A fabric treatment agent used for printing with a sublimation color material,
1. A treatment agent for fabric, comprising a colorant-scavenging compound having an Rf value of 0.7 or less as determined by a paper chromatography method under the following conditions.
[Conditions of paper chromatography method]
Procedure 1: A cellulose filter paper is impregnated with a 10% solution of the colorant-scavenging compound and then dried to prepare a carrier.
Procedure 2: After spotting a 0.1% solution of CI Disperse Red 60 in tetrahydrofuran on the carrier, it is dried to prepare a developed sample.
Procedure 3: Develop the developed sample with acetonitrile for 3 minutes at 25°C.
Procedure 4: Obtain the Rf value from the following formula.
(Formula) Rf value = Development distance of CI Disperse Red 60 / Development distance of acetonitrile

2. 2. The fabric treatment agent according to claim 1, comprising a colorant-scavenging compound having an Rf value of 0.5 or less.

3. 2. The fabric treatment agent according to claim 1, further comprising a solvent having a ratio of inorganic value to organic value (I/O value) of 1.5 or more.

4. 2. The fabric treatment agent according to claim 1, wherein the colorant-scavenging compound has an aromatic heterocycle.

5. 2. The fabric treatment agent according to claim 1, wherein the colorant-scavenging compound has three or more aromatic rings.

6. 2. The fabric treatment agent according to claim 1, wherein the colorant-scavenging compound has 5 or more aromatic rings.

7. 2. The fabric treatment agent according to claim 1, wherein the colorant-scavenging compound has a structure in which two aromatic rings are bonded to each other through a single bond.

8. A textile printing ink set comprising a textile printing ink containing a sublimation colorant and a fabric treatment agent containing a colorant-scavenging compound,
A textile printing ink set, wherein the treating agent for fabric is the treating agent for fabric according to any one of items 1 to 7.

9. A pretreated fabric containing a colorant scavenging compound,
A pretreated fabric comprising, as the colorant-scavenging compound, a colorant-scavenging compound having an Rf value of 0.7 or less as determined by a paper chromatography method under the following conditions.
[Conditions of paper chromatography method]
Procedure 1: A cellulose filter paper is impregnated with a 10% solution of the colorant-scavenging compound and then dried to prepare a carrier.
Procedure 2: After spotting a 0.1% solution of CI Disperse Red 60 in tetrahydrofuran on the carrier, it is dried to prepare a developed sample.
Procedure 3: Develop the developed sample with acetonitrile for 3 minutes at 25°C.
Procedure 4: Obtain the Rf value from the following formula.
(Formula) Rf value = Development distance of CI Disperse Red 60 / Development distance of acetonitrile

10. A textile printing method for dyeing a fabric with a sublimation colorant in the presence of a colorant-scavenging compound,
A printing method, wherein a colorant-scavenging compound having an Rf value of 0.7 or less determined by a paper chromatography method under the following conditions is used as the colorant-scavenging compound.
[Conditions of paper chromatography method]
Procedure 1: A cellulose filter paper is impregnated with a 10% solution of the colorant-scavenging compound and then dried to prepare a carrier.
Procedure 2: After spotting a 0.1% solution of CI Disperse Red 60 in tetrahydrofuran on the carrier, it is dried to prepare a developed sample.
Procedure 3: Develop the developed sample with acetonitrile for 3 minutes at 25°C.
Procedure 4: Obtain the Rf value from the following formula.
(Formula) Rf value = Development distance of CI Disperse Red 60 / Development distance of acetonitrile

11. 11. The printing method according to item 10, wherein the fabric contains natural fibers or synthetic cellulose fibers.

12. Item 10 or 11, wherein the dyeing method is a sublimation transfer method.

13. A printed fabric containing a colorant-scavenging compound and a sublimation colorant,
A printed fabric comprising, as the colorant-scavenging compound, a colorant-scavenging compound having an Rf value of 0.7 or less as determined by a paper chromatography method under the following conditions.
[Conditions of paper chromatography method]
Procedure 1: A cellulose filter paper is impregnated with a 10% solution of the colorant-scavenging compound and then dried to prepare a carrier.
Procedure 2: After spotting a 0.1% solution of CI Disperse Red 60 in tetrahydrofuran on the carrier, it is dried to prepare a developed sample.
Procedure 3: Develop the developed sample with acetonitrile for 3 minutes at 25°C.
Procedure 4: Obtain the Rf value from the following formula.
(Formula) Rf value = Development distance of CI Disperse Red 60 / Development distance of acetonitrile

According to the above means of the present invention, it is possible to provide a fabric treatment agent and the like capable of suppressing discoloration and fading of printed fabrics.

Although the expression mechanism or action mechanism of the effects of the present invention has not been clarified, it is speculated as follows.

The present inventors have found that the cause of discoloration and fading of the printed fabric over time even when a swelling agent is used as in the prior art is the bleeding of the sublimation colorant caused by insufficient fixation of the sublimation colorant to the fabric. I found it out.

The fabric treatment agent of the present invention is characterized by containing a colorant scavenging compound having an Rf value of 0.7 or less as determined by paper chromatography under the above conditions. In the paper chromatography method, C.I. Disperse Red 60 is developed using a cellulose filter paper on which a colorant-trapping compound is fixed as a carrier. In this method, the use of cellulose filter paper to which the colorant-scavenging compound has been fixed is used as a carrier, which is assumed to work between the colorant-scavenging compound and the fabric containing cellulose fibers or fibers similar to cellulose fibers. It is possible to reflect the strength of the CH-π interaction in the measured Rf value. In addition, since a sublimation colorant generally has a plurality of aromatic rings, by using C.I. Disperse Red 60 as a development target, π- The strength of π interaction can also be reflected in the Rf value, which is the measurement result. That is, the Rf value obtained by the paper chromatography method is a value representing the overall strength of the CH-π interaction and the π-π interaction. It is a value that serves as an index of force (strength for fixing the sublimation colorant to the fabric). It should be noted that the smaller the Rf value, the higher the colorant capturing power.

A colorant-scavenging compound having an Rf value of 0.7 or less is considered to have sufficient colorant-scavenging power to suppress bleeding out. It is presumed that discoloration and fading can be suppressed.

The fabric treatment agent of the present invention is a fabric treatment agent used for textile printing with a sublimation colorant, and is a colorant-capturing compound having an Rf value of 0.7 or less as determined by a paper chromatography method under the above conditions. characterized by containing
This feature is a technical feature common to or corresponding to the following embodiments.

As an embodiment of the fabric treatment agent of the present invention, it is preferable from the viewpoint of the colorant-scavenging power to contain a colorant-scavenging compound having an Rf value of 0.5 or less.

As an embodiment of the fabric treatment agent of the present invention, it is preferable to further contain a solvent having a ratio of inorganic value to organic value (I/O value) of 1.5 or more. When the I/O value is within this range, the inside of the fibers of the fabric tends to swell, and the solvent acts as a carrier for the sublimation colorant, making it easier for the sublimation colorant to enter the fibers. As a result, the sublimation colorant is more easily fixed, and the effect of suppressing discoloration and fading is enhanced.

As an embodiment of the fabric treatment agent of the present invention, the colorant-scavenging compound preferably has an aromatic heterocyclic ring from the viewpoint of colorant-scavenging power.

As an embodiment of the fabric treatment agent of the present invention, the colorant-scavenging compound preferably has three or more aromatic rings from the viewpoint of colorant-scavenging power.

As an embodiment of the fabric treatment agent of the present invention, the colorant-scavenging compound preferably has five or more aromatic rings from the viewpoint of colorant-scavenging power.

As an embodiment of the fabric treatment agent of the present invention, the colorant-scavenging compound preferably has a structure in which two aromatic rings are bonded to each other with a single bond, from the viewpoint of colorant-scavenging power. .

The textile ink set of the present invention is a textile ink set containing a textile ink containing a sublimation colorant and a fabric treatment agent containing a colorant-capturing compound, wherein the fabric treatment agent It is characterized by being the fabric treatment agent of the invention.

The pretreated fabric of the present invention is a pretreated fabric containing a colorant-scavenging compound, wherein the colorant-scavenging compound has an Rf value of 0.7 or less as determined by a paper chromatography method under the above conditions. characterized by containing a colorant scavenging compound.

The textile printing method of the present invention is a textile printing method for dyeing a fabric with a sublimation colorant in the presence of a colorant-scavenging compound, wherein the colorant-scavenging compound has an Rf value obtained by a paper chromatography method under the above conditions. It is characterized by using a colorant scavenging compound having a value of 0.7 or less.

As an embodiment of the textile printing method of the present invention, the fabric preferably contains natural fibers or synthetic cellulose fibers because the effects of the present invention can be remarkably exhibited.

As an embodiment of the textile printing method of the present invention, the dyeing method is preferably a sublimation transfer method from the viewpoint of exhibiting the effects of the present invention.

The printed fabric of the present invention is a printed fabric containing a colorant-scavenging compound and a sublimation colorant, wherein the colorant-scavenging compound has an Rf value of 0.7 or less as determined by a paper chromatography method under the above conditions. It is characterized by containing a colorant scavenging compound that becomes

DETAILED DESCRIPTION OF THE INVENTION The present invention, its constituent elements, and embodiments and modes for carrying out the present invention will be described in detail below. In the present application, "-" is used to mean that the numerical values before and after it are included as the lower limit and the upper limit.

<1 Fabric treatment agent>
The fabric treatment agent of the present invention is a fabric treatment agent used for textile printing with a sublimation colorant, and contains a colorant-trapping compound having an Rf value of 0.7 or less as determined by a paper chromatography method under the following conditions. characterized by containing

<1.1 Paper chromatography conditions>
The conditions for the paper chromatography method according to the present invention are as follows.
[Conditions of paper chromatography method]
Procedure 1: A cellulose filter paper is impregnated with a 10% solution of a colorant scavenging compound and then dried to prepare a carrier.
Procedure 2: After spotting a 0.1% solution of CI Disperse Red 60 in tetrahydrofuran on the carrier, it is dried to prepare a developed sample.
Procedure 3: Develop the developed sample with acetonitrile for 3 minutes at 25°C.
Procedure 4: Obtain the Rf value from the following formula.
(Formula) Rf value = Development distance of CI Disperse Red 60 / Development distance of acetonitrile

Details of each procedure will be described below.

(Step 1)
A 10% solution of a colorant-scavenging compound is impregnated into a 5-C cellulose filter paper specified in JIS P 3801:1995, and then dried to prepare a carrier. The solvent used for the 10% solution of the colorant-scavenging compound is not particularly limited as long as it can dissolve the colorant-scavenging compound. The shape of the cellulose filter paper is not particularly limited, and can be strip-shaped, for example. The size of the cellulose filter paper is not particularly limited, but it should be a size that allows the development in step 3 to be sufficient. The cellulose filter paper is impregnated with the solution by immersing the cellulose filter paper in the solution for 1 minute. Conditions for drying are not particularly limited as long as the carrier can be sufficiently dried in an environment of 25° C. and 50% RH to the extent that the mass of the carrier is stabilized.

(Step 2)
After spotting a 0.1% solution of CI Disperse Red 60 in tetrahydrofuran on the carrier, it is dried to prepare a developed sample. Spotting of solutions can be performed using capillaries. The amount of solution to be spotted is preferably 0.5-2 μL, more preferably 1 μL. The position of the spot is 1 cm from the bottom edge of the cellulose filter paper. Conditions for drying are not particularly limited as long as the sample can be sufficiently dried in an environment of 25° C. and 50% RH to such an extent that the mass of the developed sample is stabilized.

(Step 3)
The developed sample is developed with acetonitrile at 25° C. for 3 minutes. Specifically, the sample to be developed is placed on a developing tank containing acetonitrile so that the portion spotted in step 2 is not immersed in acetonitrile. Cover the developing tank and allow it to develop. The developing time is set to 3 minutes after the cellulose filter paper is brought into contact with acetonitrile.

(Step 4)
The Rf value is obtained from the following formula.
(Formula) Rf value = Development distance of CI Disperse Red 60 / Development distance of acetonitrile

"Development distance of C.I. Disperse Red 60" is the distance from the center of the spotted part in step 2 to the position with the darkest color in the developed spot. If it is difficult to determine the position where the color is the darkest, use the distance from the center of the spotted portion in step 2 to the center of the leading edge and the trailing edge of the spot.

The "development distance of acetonitrile" is the distance from the center of the portion spotted in step 2 to the tip of acetonitrile after development.

The Rf value may be an average value of multiple measurements in consideration of measurement accuracy.

<1.2 Colorant Scavenging Compound>
The fabric treatment agent of the present invention is characterized by containing a colorant scavenging compound having an Rf value of 0.7 or less as determined by paper chromatography under the above conditions. The Rf is preferably 0.5 or less, more preferably 0.3 or less, and even more preferably 0.2 or less from the viewpoint of colorant-trapping power.

The colorant-scavenging compound according to the present invention is preferably a compound having an aromatic ring (aromatic compound), more preferably a compound having an aromatic heterocyclic ring (aromatic heterocyclic compound).

In the present invention, the term "aromatic heterocyclic ring" refers to an aromatic ring composed of carbon and heteroatoms other than carbon, the only element constituting the aromatic ring is carbon, and the heteroatom is an aromatic ring. It does not include the case where it constitutes a substituent that substitutes for.

The heteroatom constituting the aromatic heterocycle of the aromatic heterocyclic compound is preferably an oxygen atom, a nitrogen atom, or a sulfur atom, more preferably a nitrogen atom, from the viewpoint of the ability to capture the colorant. .

Examples of the aromatic heterocyclic ring possessed by the aromatic heterocyclic compound include pyrazole ring, triazole ring, imidazole ring, triazine ring, pyridine ring, pyrazole ring, alidine ring, indole ring, quinoline ring, pyrrole ring, thiophene ring and the like. is mentioned. Among these, a pyrazole ring, a triazole ring, or an imidazole ring is preferable from the viewpoint of colorant-trapping power.

In addition, the aromatic compound used as the colorant-scavenging compound preferably has three or more aromatic rings, more preferably five or more aromatic rings. In addition, it is preferable to partially or wholly have a structure in which two aromatic rings are bonded to each other with a single bond. When the aromatic compound has these structures, the aromaticity becomes high, so the π-π interaction with the sublimation colorant becomes stronger. As a result, the colorant-capturing power is improved, and the effect of suppressing discoloration and fading can be enhanced.

The coloring material-scavenging compound according to the present invention preferably has a solubility of 10% by mass or more in the solvent contained together with the fabric treatment agent at 25° C. and 1 atm. The higher the solubility in the solvent, the more easily the colorant-capturing compound enters the fibers of the fabric in a dissolved state, so that the colorant-capturing power is improved and the effect of suppressing discoloration and fading is enhanced.

Further, the colorant-scavenging compound according to the present invention preferably has a low molecular weight in that it can capture the sublimated colorant inside the fibers of the fabric. Low molecular weight means that the molecular weight is in the range of 200-1000, for example.

1 illustrates colorant scavenging compounds according to the present invention. However, the colorant-scavenging compound according to the present invention is not limited to these.

From the viewpoint of the colorant-scavenging ability, the colorant-scavenging compound according to the present invention is contained preferably in the range of 1 to 30% by mass, more preferably in the range of 10 to 20% by mass, relative to the entire fabric treatment agent. It is more preferable that it is contained within.

<1.3 Solvent>
The fabric treatment agent of the present invention may contain a solvent. The type of solvent is not particularly limited, but the value of the ratio of the inorganic value to the organic value (I/O value) is preferably 1.5 or more, and is in the range of 1.5 to 5.0. is more preferable, and more preferably within the range of 1.5 to 2.0. When the I/O value is within this range, the inside of the fibers of the fabric tends to swell, and the solvent acts as a carrier for the sublimation colorant, making it easier for the sublimation colorant to enter the fibers. As a result, the sublimation colorant is more easily fixed, and the effect of suppressing discoloration and fading is enhanced.

The "I/O value" is the ratio of the inorganic value (I) to the organic value (O) (inorganic value/organic value), and the "IOB value" (Inorganic Organic Balance: IOB). Also called polarity, it is one of the indices indicating the magnitude of the polarity of a compound or member.

The I / O value is an organic conceptual diagram (Yoshio Koda, Sankyo Publishing (1984)); KUMAMOTO PHARMACEUTICAL BULLETIN, No. 1, 1-16 (1954); , pp. 719-725 (1957). The I/O value is a value that treats the polarity of a compound or member in an organic concept, and this method is one of the functional group contribution methods in which parameters are set for each functional group. The values of organicity and organicity are shown. The I/O value is roughly divided into organic groups representing covalent bonding and inorganic groups representing ionic bonding. are positioned one by one.

Here, the "inorganic value (I)" is a numerical representation of the influence of various substituents or bonds of an organic compound on the boiling point based on the hydroxyl group. Specifically, if the distance between the straight-chain alcohol boiling point curve and the straight-chain paraffin boiling point curve is taken around 5 carbon atoms, the distance is about 100°C, so the influence of one hydroxy group is defined as 100 numerically. Based on this numerical value, the value obtained by quantifying the influence of various substituents or various bonds on the boiling point is the inorganic value (I) of the substituent possessed by the organic compound. For example, a —COOH group has an inorganicity value (I) of 150 and a double bond has an inorganicity value (I) of 2. Therefore, the inorganic value (I) of a certain organic compound means the sum of the inorganic values (I) of various substituents or bonds possessed by the compound.

The "organicity value (O)" is determined based on the influence of the carbon atom representing the methylene group on the boiling point, with the methylene group in the molecule as a unit. That is, since the average value of the boiling point increase due to the addition of one carbon in the vicinity of 5 to 10 carbon atoms of a linear saturated hydrocarbon compound is 20 ° C., the organicity value of one carbon atom is taken as 20 based on this. Based on this, the value obtained by quantifying the influence of various substituents or bonds on the boiling point is the organic value (O). For example, the nitro group (-NO ₂ ) has an organicity value (O) of 70.

In general, the closer the I/O value is to 0, the more non-polar (hydrophobic and organic) the organic substance is. indicates that there is

Examples of solvents having an I/O value of 1.5 or more include ethylene glycol monoethylene ether (I/O value: 1.5), dimethyl sulfoxide (I/O value: 1.75), and butyric acid (I/O value: 1.75). O value: 1.875), polyethylene glycol (I/O value: 2.0), isobutyric acid (I/O value: 2.143), 2,3-butanediol (I/O value: 2.5) , trimethylolethane (I/O value: 3.0), propylene glycol (I/O value: 3.3), polypropylene glycol (I/O value: 3.3), ethylene glycol (I/O value: 5 .0) and the like. Among these, it is preferable to contain at least one of dimethyl sulfoxide, ethylene glycol, and propylene glycol in that the fibers of the fabric can be swollen and discoloration and fading can be suppressed.

Also, the boiling point of the solvent is preferably in the range of 150 to 250°C. Examples of solvents having a boiling point within the range of 150 to 250° C. include propylene glycol (boiling point 188° C.), ethylene glycol (boiling point 197° C.), dimethyl sulfoxide (boiling point 189° C.), 2,3-butanediol (boiling point 177° C. °C) and the like.

In addition to the solvents listed above, for example, 2-pyrrolidone (I/O value: 1.15) can also be used.

In the fabric treatment agent, from the viewpoint of suppressing discoloration and fading, the solvent is preferably contained in the range of 5 to 95% by mass, more preferably 50 to 80% by mass, relative to the entire fabric treatment agent. It is more preferable that it is contained within.

<1.4 Other Components>
The fabric treatment agent of the present invention may further contain components other than those described above, if necessary. Examples of other ingredients include water, surfactants, preservatives, pH adjusters, and the like.

Examples of water include ion-exchanged water, distilled water, pure water, and the like. The water content in the fabric treatment agent is preferably in the range of 0 to 95% by mass, more preferably in the range of 0 to 50% by mass.

The surfactant can be used without any particular limitation, but when the ink contains an anionic compound, the ionic surfactant is preferably of the anionic, nonionic or betaine type. Specifically, fluorine-based or silicone-based surfactants with high static surface tension lowering ability, dioctyl sulfosuccinate with high dynamic surface tension lowering ability, and anionic surfactants such as sodium dodecyl sulfate Nonionic surfactants such as surfactants, relatively low-molecular-weight polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, acetylene glycols, pluronic surfactants (Pluronic is a registered trademark), and sorbitan derivatives are preferably used. It is also preferable to use a fluorine-based or silicone-based surfactant in combination with a surfactant having a high dynamic surface tension-lowering ability.

Examples of preservatives include aromatic halogen compounds (eg, PreventolCMK), methylenedithiocyanate, halogen-containing nitrogen-sulfur compounds, 1,2-benzisothiazolin-3-ones (eg, PROXELGXL), and the like.

Examples of pH adjusters include citric acid, sodium citrate, hydrochloric acid, sodium hydroxide, and the like.

<1.5 Physical properties of fabric treatment agent>
The viscosity at 25° C. of the fabric treatment agent can be appropriately adjusted depending on the method of application to the fabric. For example, when applying the fabric treatment agent by an ink jet method, the viscosity of the fabric treatment agent is preferably in the range of 4 to 20 mPa·s. The viscosity of the fabric treatment agent can be measured at 25° C. with an E-type viscometer.

<2 Ink set for textile printing>
The textile ink set of the present invention is a textile ink set containing a textile ink containing a sublimation colorant and a fabric treatment agent containing a colorant-capturing compound, wherein the fabric treatment agent It is characterized by being the fabric treatment agent of the invention.

The fabric treatment agent contained in the textile printing ink set is as described above. The textile inks included in the textile ink set will be described below.

<3 Textile ink>
The textile ink contained in the textile ink set of the present invention contains at least a sublimation colorant. Moreover, water, an organic solvent, a dispersant, etc. may be contained in addition to the sublimation colorant.

<3.1 Sublimation color material>
In the present invention, the term "sublimation colorant" refers to a colorant that sublimates when heated.

The sublimation colorant is preferably a disperse dye that is insoluble or sparingly soluble in water. Here, insoluble or poorly soluble in water means that the solubility in water at 25° C. is 10 mg/L or less, preferably 5 mg/L or less, more preferably 1 mg/L or less.

Although the chemical structure of the sublimation colorant is not particularly limited, it preferably has a plurality of aromatic rings. By having a plurality of aromatic rings, the π-π interaction with the colorant-scavenging compound works strongly, and the sublimated colorant is more easily fixed to the fabric.

Examples of disperse dyes among sublimation colorants include the following dyes.

C. I. Disperse Yellow 3, 4, 5, 7, 9, 13, 24, 30, 33, 34, 42, 44, 49, 50, 51, 54, 56, 58, 60, 63, 64, 66, 68, 71, 74 , 76, 79, 82, 83, 85, 86, 88, 90, 91, 93, 98, 99, 100, 104, 114, 116, 118, 119, 122, 124, 126, 135, 140, 141, 149 , 160, 162, 163, 164, 165, 179, 180, 182, 183, 186, 192, 198, 199, 202, 204, 210, 211, 215, 216, 218, 224, etc.

C. I. Disperse Orange 1, 3, 5, 7, 11, 13, 17, 20, 21, 25, 29, 30, 31, 32, 33, 37, 38, 42, 43, 44, 45, 47, 48, 49, 50 , 53, 54, 55, 56, 57, 58, 59, 61, 66, 71, 73, 76, 78, 80, 89, 90, 91, 93, 96, 97, 119, 127, 130, 139, 142 etc,

C. I. Disperse Red 1, 4, 5, 7, 11, 12, 13, 15, 17, 27, 43, 44, 50, 52, 53, 54, 55, 56, 58, 59, 60, 65, 72, 73, 74 , 75, 76, 78, 81, 82, 86, 88, 90, 91, 92, 93, 96, 103, 105, 106, 107, 108, 110, 111, 113, 117, 118, 121, 122, 126 , 127, 128, 131, 132, 134, 135, 137, 143, 145, 146, 151, 152, 153, 154, 157, 159, 164, 167, 169, 177, 179, 181, 183, 184, 185 , 188, 189, 190, 191, 192, 200, 201, 202, 203, 205, 206, 207, 210, 221, 224, 225, 227, 229, 239, 240, 257, 258, 277, 278, 279 , 281, 288, 289, 298, 302, 303, 310, 311, 312, 320, 324, 328, etc.

C. I. Disperse Violet 1, 4, 8, 23, 26, 27, 28, 31, 33, 35, 36, 38, 40, 43, 46, 48, 50, 51, 52, 56, 57, 59, 61, 63, 69 , 77 etc.,

C. I. Disperse Green 9 etc.,

C. I. Disperse Brown 1, 2, 4, 9, 13, 19, etc.,

C. I. Disperse Blue 3, 7, 9, 14, 16, 19, 20, 26, 27, 35, 43, 44, 54, 55, 56, 58, 60, 62, 64, 71, 72, 73, 75, 79, 81 , 82, 83, 87, 91, 93, 94, 95, 96, 102, 106, 108, 112, 113, 115, 118, 120, 122, 125, 128, 130, 139, 141, 142, 143, 146 , 148, 149, 153, 154, 158, 165, 167, 171, 173, 174, 176, 181, 183, 185, 186, 187, 189, 197, 198, 200, 201, 205, 207, 211, 214 , 224, 225, 257, 259, 267, 268, 270, 284, 285, 287, 288, 291, 293, 295, 297, 301, 315, 330, 333, 359, 360, etc.

C. I. Disperse Black 1, 3, 10, 24, etc.;

Although the molecular weight of the sublimation colorant is not particularly limited, the molecular weight is preferably small (for example, 200 to 350) from the viewpoint of facilitating sublimation of the sublimation colorant. On the other hand, from the viewpoint of making it difficult for the sublimation colorant that has permeated the fabric to escape, the molecular weight is preferably moderately large (for example, 350 to 500).

The sublimation colorant contained in the textile printing ink may or may not be crystallized.

The average particle size of the sublimation colorant in the textile ink is not particularly limited, but may be, for example, 300 nm or less from the viewpoint of ejection stability in an inkjet method. The average particle size can be determined by a commercially available particle size measuring device using a light scattering method, an electrophoresis method, a laser Doppler method, or the like. can be done.

Although the content of the sublimation colorant in the textile ink is not particularly limited, it is preferably in the range of 2 to 10% by mass based on the total textile ink. When the content of the sublimation colorant is 2% by mass or more, it is easy to form a high-density image. Hateful. From the same point of view, the content of the sublimation colorant is more preferably in the range of 5 to 10% by mass with respect to the total textile ink.

<3.2 Water>
Examples of water that may be contained in the textile printing ink include ion-exchanged water, distilled water, pure water, and the like. The water content in the textile printing ink is preferably in the range of 40 to 98% by mass, more preferably in the range of 50 to 70% by mass.

<3.3 Organic solvent>
A water-soluble organic solvent is preferable as the organic solvent that can be contained in the textile printing ink. The total content of water and water-soluble organic solvent is preferably within the range of 90 to 98% by mass, more preferably within the range of 90 to 95% by mass, relative to the total textile ink.

Examples of water-soluble organic solvents include alcohols (e.g., methanol, ethanol, propanol, pentanol, hexanol, cyclohexanol, benzyl alcohol), polyhydric alcohols (e.g., ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol). , propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, glycerin, compounds represented by the following general formula (1)), polyhydric alcohol ethers (e.g., ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol dimethyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether), amines (e.g. ethanolamine, N-ethyldiethanolamine) , morpholine, N-ethylmorpholine, ethylenediamine, diethylenediamine, triethylenetetramine), amides (e.g. formamide, N,N-dimethylformamide, N,N-dimethylacetamide), heterocycles (e.g. 2-pyrrolidone, N-methyl-2-pyrrolidone, N-cyclohexyl-2-pyrrolidone, 2-oxazolidone, 1,3-dimethyl-2-imidazolidine), sulfoxides (eg, dimethylsulfoxide), sulfones (eg, sulfolane). be

[In the general formula (1), R ₁₁ represents an ethylene glycol group or a propylene glycol group, x, y and z are all positive integers, and x+y+z=3-30. ]

When the fabric contains hydrophilic fibers such as natural fibers or synthetic cellulose fibers, from the viewpoint of promoting the penetration of the textile printing ink into the fabric and from the viewpoint of making it difficult to impair the ejection stability in the inkjet method, It is preferable that the ink does not easily thicken due to drying. Therefore, the textile printing ink preferably contains a high-boiling solvent having a boiling point of 200° C. or higher among the water-soluble organic solvents.

Examples of high-boiling solvents having a boiling point of 200° C. or higher include polyols and polyalkylene oxides. Examples of polyols having a boiling point of 200° C. or higher include 1,3-butanediol (boiling point of 208° C.), 1,6-hexanediol (boiling point of 223° C.), dihydric alcohols such as polypropylene glycol; glycerin (boiling point of 290° C.) and trimethylolpropane (boiling point 295° C.). Examples of polyalkylene oxides having a boiling point of 200°C or higher include diethylene glycol monoethyl ether (boiling point 202°C), triethylene glycol monomethyl ether (boiling point 245°C), tetraethylene glycol monomethyl ether (boiling point 305°C), and tripropylene glycol. monoethyl ether (boiling point 256° C.); ethers of dihydric alcohols such as polypropylene glycol; and ethers of trihydric or higher alcohols such as glycerin (boiling point 290° C.) and hexanetriol.

The content of the water-soluble organic solvent is preferably in the range of 20 to 70% by mass with respect to the entire textile printing ink. When the content of the water-soluble organic solvent is 20% by mass or more relative to the entire textile ink, the dispersibility and injection properties of the sublimation colorant are likely to be improved. It is difficult to lose sex.

<3.4 Dispersant>
A dispersant that can be contained in the textile printing ink can be selected according to the type of sublimation colorant. Examples of dispersants include formalin condensate of sodium creosote oil sulfonate, formalin condensate of sodium cresol sulfonate and sodium 2-naphthol-6-sulfonate, formalin condensate of sodium cresol sulfonate, sodium phenol sulfonate. formalin condensates of sodium β-naphtholsulfonate, formalin condensates including sodium β-naphthalenesulfonate and sodium β-naphtholsulfonate, alkylene oxides including ethylene oxide and propylene oxide, fatty alcohols, fatty amines, Alkylatable compounds including fatty acids, phenols, alkylphenols and carboxylic acid amines, lignin sulfonates, sodium paraffin sulfonates, copolymers of α-olefins and maleic anhydride, and known comb block polymers. .

Examples of comb block polymers include DISPERBYK-190, DISPERBYK-194N, DISPERBYK-2010, DISPERBYK-2015, and BYK-154 from BYK-Chemie ("DISPERBYK" and "BYK" are registered trademarks of the same company). .

Although the content of the dispersant is not particularly limited, it is preferably in the range of 20 to 200 parts by mass with respect to 100 parts by mass of the sublimation colorant. When the content of the dispersant is 20 parts by mass or more, the dispersibility of the sublimation colorant is likely to be enhanced, and when the content is 200 parts by mass or less, it is easy to suppress deterioration of the injection property due to the dispersant.

<3.5 Other components>
The textile printing ink may further contain other components as necessary. Examples of other ingredients include surfactants, preservatives, pH adjusters, and the like. For these, the same surfactants, preservatives, and pH adjusters that may be contained in the fabric treatment agent can be used.

<3.6 Physical properties of ink for textile printing>
The viscosity of the textile printing ink at 25° C. is not particularly limited as long as the jetting property by the inkjet method is good, but it is preferably in the range of 3 to 20 mPa·s, and preferably in the range of 4 to 12 mPa·s. It is more preferable to be within the range. The viscosity of the ink can be measured at 25° C. with an E-type viscometer.

<3.7 Ink for Textile Printing Containing Colorant Scavenging Compound>
The colorant-scavenging compounds described above can also be included in textile inks. By using a textile printing ink containing a colorant-scavenging compound, it is possible to obtain an effect of suppressing discoloration and fading due to the colorant-scavenging compound while eliminating the need for a fabric treatment agent and pretreatment of the fabric with it.

The textile ink containing the colorant-scavenging compound does not require the fabric treatment agent and pretreatment of the fabric with it, but the fabric pretreated with the fabric treatment agent (pretreated fabric) can also be used.

<4 Printing method>
The textile printing method of the present invention is a textile printing method for dyeing a fabric with a sublimation colorant in the presence of a colorant-scavenging compound, wherein the colorant-scavenging compound has an Rf value obtained by a paper chromatography method under the above conditions. It is characterized by using a colorant scavenging compound having a value of 0.7 or less.

In the present invention, “in the presence of a colorant-scavenging compound” refers to the case of dyeing a fabric pretreated with a fabric treatment agent containing a colorant-scavenging compound (pretreated fabric), Including the case where the compound is contained in textile printing ink for dyeing. In either case, the presence of the colorant-scavenging compound facilitates the fixation of the sublimated colorant to the fabric, thereby suppressing discoloration and fading.

<4.1 Fabric>
The fibers contained in the fabric according to the present invention are not particularly limited, but include natural fibers (including natural cellulose fibers, hemp, wool, silk, etc.), synthetic cellulose fibers (regenerated cellulose fibers such as rayon, and semi-cellulose fibers such as acetate). including synthetic cellulose fibers), vinylon fibers, nylon fibers, acrylic fibers, polyurethane fibers, polyester fibers, and the like.

The fabric preferably contains natural fibers or synthetic cellulose fibers, and the content of the natural fibers or synthetic cellulose fibers is more preferably 30% by mass or more because the effects of the present invention can be remarkably exhibited. Among natural fibers, natural cellulose fibers such as cotton fibers are particularly preferred.

The fabric may be made of these fibers in any form such as woven fabric, non-woven fabric, or knitted fabric. Also, the fabric may be a blended woven fabric or a blended nonwoven fabric of two or more types of fibers.

<4.2 Pretreatment step>
When dyeing a pretreated fabric (a fabric pretreated with a fabric treatment agent), a pretreatment step is required. In the pretreatment step, the fabric treatment agent is applied to at least a part of the surface of the fabric. The fabric treatment agent may be applied to the entire surface of the fabric, or may be selectively applied only to the area to be dyed with the sublimation color material according to the image to be printed.

As a method for applying the fabric treatment agent to the fabric, a known method can be used without particular limitation. Specific examples thereof include a spray method, a mangle method (a pad method or a dipping method), a coating method, an inkjet method, and the like. For example, in the dyeing process described later, the inkjet method is preferable from the viewpoint of being able to continuously apply the textile ink containing the sublimation colorant, and from the viewpoint of applying a predetermined amount of the fabric treatment agent in a short time. , the mangle method and the coater method are preferred.

In the mangle method, the applied amount of the fabric treatment agent is adjusted by squeezing after immersing the fabric in the fabric treatment agent stored in a bath. The temperature of the fabric treatment agent is not particularly limited, but may be 15 to 30°C. The conditions in the inkjet method can be the same as those for applying the textile printing ink in the dyeing process.

The amount of the fabric treatment agent to be applied is not particularly limited, and can be adjusted according to the content of the colorant-capturing compound in the fabric treatment agent, the amount of the textile printing ink to be applied, and the like.

After applying the fabric treatment agent to the fabric, a step of removing the solvent from the coating film of the fabric treatment agent applied to the fabric, that is, a drying step, may be performed, but it is preferable that the solvent remains. The drying method is not particularly limited, and heating with hot air, a hot plate, or a heat roller is preferred. Heat drying is more preferable from the viewpoint of sufficiently removing the liquid medium in a short time. The drying temperature is preferably in the range of 100-130°C.

<4.3 Dyeing process>
As the dyeing method in the dyeing process, after the textile ink is applied to the transfer medium, the textile ink is transferred from the transfer medium to the fabric for dyeing (sublimation transfer method), and the textile ink is directly applied to the fabric. A method of applying and dyeing (direct sublimation method) can be mentioned, and the sublimation transfer method is preferable from the viewpoint of exhibiting the effect of the present invention.

When dyeing the pretreated fabric, the pretreated fabric is preferably in an undried state. Specifically, it is preferable that the fabric treatment agent remains in an amount of 20% by mass or more with respect to the fabric mass before pretreatment. As a result, the inside of the fibers of the fabric is swollen, so that the sublimation colorant is more likely to be fixed, and the effect of suppressing discoloration and fading is enhanced.

(sublimation transfer method)
In dyeing by the sublimation transfer method, first, textile printing ink is applied onto a transfer medium and then dried to form an ink layer (transfer image) corresponding to the printed image. The method of applying the textile printing ink is not particularly limited, but it is preferable to use an ink jet method because highly accurate printing is possible.

The transfer medium used for dyeing by the sublimation transfer method is one that can form an ink layer on the surface of the transfer medium and that the ink layer can be transferred to the fabric, for example, one that does not interfere with the sublimation of the sublimation colorant during transfer. , is not particularly limited. As the transfer medium, for example, paper having an ink-receiving layer formed on the surface thereof with inorganic fine particles such as silica is preferable, and examples thereof include special paper for inkjet and transfer paper.

Next, the surface of the transfer image on the transfer medium is brought into contact with the surface of the fabric (including the pretreated fabric) and heated (heat pressed). As a result, the sublimation color material in the transfer image formed on the transfer medium is sublimated and transferred to the fabric to dye the fabric.

The transfer temperature (heat press temperature) is preferably in the range of 180 to 210° C., although it depends on the sublimation temperature of the sublimation colorant. The pressing pressure is preferably in the range of 200 to 500 g/cm ² in the case of the flat type, and in the range of 2 to 6 kg/cm ² in the case of the continuous type. The press time is preferably in the range of 30 seconds to 180 seconds, depending on the transfer temperature and press pressure.

(direct sublimation method)
In dyeing by the direct sublimation method, textile printing ink is directly applied to the fabric (including pretreated fabric) according to the printed image. The method of applying the textile printing ink is not particularly limited, but it is preferable to use an ink jet method because highly accurate printing is possible. Specifically, in the inkjet method, droplets of textile printing ink are ejected from an inkjet recording head onto a fabric using an inkjet recording apparatus.

The temperature of the surface of the fabric when the textile ink droplets land is not particularly limited, but it may be heated within the range of 35 to 70° C. from the viewpoint of suppressing bleeding of the image before color development.

By heating the ink coating film after landing, the sublimation coloring material is sublimated and the fabric is dyed. The heating method may be a conventionally known method, and is appropriately selected according to the type of textile printing ink, colorant-capturing compound, and fabric. Examples include steaming with steam; baking with dry heat, thermosol; HT steamer with superheated steam; Among them, the steaming method, the baking method, and the heat press method are preferable. The heating temperature is not particularly limited, but can be, for example, 95°C or higher and lower than 220°C.

<5 Pretreated fabric>
The pretreated fabric of the present invention is a pretreated fabric containing a colorant-scavenging compound, wherein the colorant-scavenging compound has an Rf value of 0.7 or less as determined by a paper chromatography method under the above conditions. characterized by containing a colorant scavenging compound.

In the present invention, the term "pretreated fabric containing a colorant-scavenging compound" means a fabric in which the colorant-scavenging compound is physically or chemically adsorbed on fibers contained in the fabric. .

The pretreated fabric can be obtained by subjecting the fabric to the pretreatment described above.

<6 Printed fabric>
The printed fabric of the present invention is a printed fabric containing a colorant-scavenging compound and a sublimation colorant, wherein the colorant-scavenging compound has an Rf value of 0.7 or less as determined by a paper chromatography method under the above conditions. It is characterized by containing a colorant scavenging compound that becomes

In the present invention, "printed fabric containing a colorant-capturing compound and a sublimation colorant" means that the colorant-capturing compound and the sublimation colorant are physically adsorbed to the fibers contained in the fabric, or chemically adsorbed. It means a fabric such as condition.

The printed fabric can be obtained by performing the above-described printing on the fabric. Specifically, it can be obtained by dyeing a fabric with at least one of a textile printing ink containing a colorant-scavenging compound and a pretreated fabric.

EXAMPLES The present invention will be specifically described below with reference to Examples, but the present invention is not limited to these. In the following examples, unless otherwise specified, operations were performed at room temperature (25°C). Moreover, unless otherwise specified, "%" and "parts" mean "% by mass" and "parts by mass" respectively.

[Preparation of fabric treatment agent]
Colorant scavenger compounds and solvents were mixed in the combinations shown in Table I so that the content of the colorant scavenger compound was 20% by mass, and fabric treatment agents 1 to 19 were prepared.

The compounds used as the colorant scavenging compounds are compounds (1) to (13) described above.

The Rf values in Table 1 are Rf values determined by paper chromatography under the following conditions using each colorant-scavenging compound.

[Conditions of paper chromatography method]
Procedure 1: A cellulose filter paper of type 5 C specified in JIS P 3801:1995 was impregnated with a 10% solution of the colorant-trapping compound, and then dried to prepare a carrier. As the solvent for the 10% solution of the colorant scavenging compound, the same type of solvent (dimethylsulfoxide or 2-pyrrolidone) as the solvent contained in the fabric treatment agent was used. The cellulose filter paper used was cut into strips measuring 5 cm long and 3 cm wide. The cellulose filter paper was impregnated with the solution by immersing the cellulose filter paper in the solution for 1 minute. Drying after impregnation was carried out by nipping with kimtowels to remove an excess amount, followed by drying with a hot press at 180° C. for 1 minute.

Procedure 2: After spotting a 0.1% solution of C.I. Disperse Red 60 in tetrahydrofuran on the carrier, it was dried to prepare a developed sample. Solution spotting was performed using a capillary. The amount of spotted solution was 1 μL, and the diameter of the spot was about 2 mm. The position of the spot was 1 cm from the bottom edge of the cellulose filter paper. Drying after spotting was performed by sufficiently drying with warm air.

Procedure 3: The developed sample was developed with acetonitrile for 3 minutes at 25°C. Specifically, the sample to be developed was placed vertically as much as possible in a developing tank filled with acetonitrile to a height of about 5 mm so that the portion spotted in step 2 would not be immersed in acetonitrile. Then, the developing tank was covered and developed. The development time was set to 3 minutes after the cellulose filter paper was brought into contact with acetonitrile.

Procedure 4: The Rf value was obtained from the following formula.
(Formula) Rf value = Development distance of CI Disperse Red 60 / Development distance of acetonitrile

"Development distance of C.I. Disperse Red 60" is the distance from the center of the spot spotted in step 2 to the darkest position in the spot after development. When it was difficult to determine the position where the color was the darkest, the distance from the center of the portion spotted in step 2 to the center of the leading edge and the trailing edge of the spot was taken.

The "development distance of acetonitrile" was the distance from the center of the portion spotted in step 2 to the tip of the acetonitrile after development.

For each colorant-scavenging compound, the measurement was performed three times, and the average value was adopted as the Rf value.

The Rf value of the fabric treatment agent 1 is a value measured using cellulose filter paper as it is as a carrier.

[Preparation of textile printing ink]
After stirring and mixing Disperbyk-190 (manufactured by BYK Japan Co., Ltd., acid value 10 mgKOH/g) as a dispersant and ion-exchanged water until uniform, CI Disperse Red 60 is added as a sublimation colorant (disperse dye). These were premixed and dispersed until the Z-average particle size measured by the dynamic light scattering method fell within the range of 150 to 200 nm to prepare a dispersion having a sublimation colorant concentration of 20% by mass. At this time, the dispersant and the ion The amounts of exchange water and sublimation colorant were adjusted. The Z-average particle size was measured by the dynamic light scattering method using a sand grinder filled with 0.5 mm zirconia beads at a volume ratio of 50%, Zetasizer 1000, manufactured by Malvern ("Zetasizer" is a registered trademark of the company). was done using

30% by mass of the resulting dispersion, 10% by mass of glycerin as an organic solvent, 25% by mass of ethylene glycol, appropriate amounts of Proxel GXL as an antiseptic, and sodium citrate hydrate as a pH adjuster were added and dissolved in deionized water. After mixing so that the total was 100% by mass, it was filtered through a 1 μm mesh filter. Thus, textile printing ink 1 (magenta sublimation ink) containing 6% by mass of C.I. Disperse Red 60 was prepared.

Textile ink 2 (blue sublimation ink) containing 6% by mass of C.I. ) was prepared.

Disperse Red 60 was changed to C.I. Disperse Yellow 54 in the preparation of textile printing ink 1 (magenta sublimation ink), and C.I. Textile ink 3 (yellow sublimation ink) containing 3% by weight of Yellow 54 was prepared.

[Printing]
(1) Pretreatment of fabric with fabric treatment agent (preparation of pretreated fabric)
Cotton Broad 40 (100% cotton) was used as the fabric. Using an inkjet printer having an inkjet head (Konica Minolta head KM1024iMAE), each fabric treatment agent prepared above was applied to the fabric at 540 dpi main scanning×720 dpi sub-scanning. The application area was 200 mm×200 mm, and the application amount was 40 g/m ² . As a result, pretreated fabrics pretreated with each fabric treatment agent were obtained.

(2) Application of Textile Printing Ink to Transfer Paper As the transfer paper, A4 sublimation transfer paper with glue (manufactured by Systemgraphy Co., Ltd.) was used. Using an inkjet printer having an inkjet head (Konica Minolta head KM1024iMAE), the textile printing ink prepared above is applied to transfer paper at 540 dpi main scanning × 720 dpi sub-scanning, and a solid image of 200 mm × 200 mm is applied on the transfer paper. (ink layer) was formed. The ejection frequency was set to 22.4 kHz. Thereafter, the transfer paper to which the textile printing ink was applied was dried in a dryer at 70° C. for 30 seconds.

(3) Sublimation transfer of textile ink to fabric The solid image of the transfer paper to which the textile ink is applied is brought into contact with the area where the fabric treatment agent is applied on the undried pretreated fabric prepared above, Thermocompression bonding was performed at 180° C. for 3 minutes with a press pressure of 300 g/cm ² using a transfer device (heat press machine). As a result, the textile printing ink on the transfer paper was sublimated and transferred onto the pretreated fabric to obtain a printed fabric.

[Evaluation of discoloration suppression effect]
L ^*, a ^* , and b ^* in the L ^* a ^* b ^* color space of each printed fabric printed using each fabric treatment agent were measured using a spectrophotometer (Konica Minolta CM-25d, measurement light source : D65). Also, each printed fabric was left in an environment of 20° C. and 95% RH for 7 days, and then L ^* , a ^* , and b ^* were measured again. ΔL ^* , Δa ^* , and Δb ^* , which are the differences between the values before and after the standing, were determined, and the color difference ΔE ^* ab before and after the standing was determined by the following formula.
(Formula) ΔE ^* ab={(ΔL ^* ) ²⁺ (Δa ^* ) ²⁺ (Δb ^* ) ² } ^1/2

From the ΔE ^* ab, the effect of suppressing discoloration and fading was evaluated according to the following criteria. The evaluation results are shown in Table I.

A: ΔE ^* ab is less than 2 B: ΔE ^* ab is 2 or more and less than 4 C: ΔE ^* ab is 4 or more and less than 6 D: ΔE ^* ab is 6 or more and less than 8 E: ΔE ^* ab is 8 or more and less than 10 F: ΔE ^* ab is 10 or more and less than 12 G: ΔE ^* ab is 12 or more and less than 14 H: ΔE ^* ab is 14 or more

In the table, "DR60" indicates C.I. Disperse Red 60, "DB359" indicates C.I. Disperse Blue 359, and "DY54" indicates C.I. Disperse Yellow 54.

From the above results, it can be confirmed that the treatment agent for fabrics of the present invention can suppress discoloration and fading of the printed fabric compared to the treatment agents for fabrics of the comparative examples.

Claims (13)

A fabric treatment agent used for printing with a sublimation color material,
1. A treatment agent for fabric, comprising a colorant-scavenging compound having an Rf value of 0.7 or less as determined by a paper chromatography method under the following conditions.
[Conditions of paper chromatography method]
Procedure 1: A cellulose filter paper is impregnated with a 10% solution of the colorant-scavenging compound and then dried to prepare a carrier.
Procedure 2: After spotting a 0.1% solution of CI Disperse Red 60 in tetrahydrofuran on the carrier, it is dried to prepare a developed sample.
Procedure 3: Develop the developed sample with acetonitrile for 3 minutes at 25°C.
Procedure 4: Obtain the Rf value from the following formula.
(Formula) Rf value = Development distance of CI Disperse Red 60 / Development distance of acetonitrile 2. The fabric treatment agent according to claim 1, further comprising a colorant scavenging compound having an Rf value of 0.5 or less. 2. The fabric treatment agent according to claim 1, further comprising a solvent having a ratio of inorganic value to organic value (I/O value) of 1.5 or more. The fabric treatment agent according to claim 1, wherein the colorant-scavenging compound has an aromatic heterocycle. The fabric treatment agent according to claim 1, wherein the colorant-scavenging compound has three or more aromatic rings. The fabric treatment agent according to claim 1, wherein the colorant-scavenging compound has 5 or more aromatic rings. 2. The fabric treatment agent according to claim 1, wherein the colorant-scavenging compound has a structure in which two aromatic rings are bonded to each other with a single bond. A textile printing ink set comprising a textile printing ink containing a sublimation colorant and a fabric treatment agent containing a colorant-scavenging compound,
A textile printing ink set, wherein the fabric treatment agent is the fabric treatment agent according to any one of claims 1 to 7. A pretreated fabric containing a colorant scavenging compound,
A pretreated fabric comprising, as the colorant-scavenging compound, a colorant-scavenging compound having an Rf value of 0.7 or less as determined by a paper chromatography method under the following conditions.
[Conditions of paper chromatography method]
Procedure 1: A cellulose filter paper is impregnated with a 10% solution of the colorant-scavenging compound and then dried to prepare a carrier.
Procedure 2: After spotting a 0.1% solution of CI Disperse Red 60 in tetrahydrofuran on the carrier, it is dried to prepare a developed sample.
Procedure 3: Develop the developed sample with acetonitrile for 3 minutes at 25°C.
Procedure 4: Obtain the Rf value from the following formula.
(Formula) Rf value = Development distance of CI Disperse Red 60 / Development distance of acetonitrile A textile printing method for dyeing a fabric with a sublimation colorant in the presence of a colorant-scavenging compound,
A printing method, wherein a colorant-scavenging compound having an Rf value of 0.7 or less determined by a paper chromatography method under the following conditions is used as the colorant-scavenging compound.
[Conditions of paper chromatography method]
Procedure 1: A cellulose filter paper is impregnated with a 10% solution of the colorant-scavenging compound and then dried to prepare a carrier.
Procedure 2: After spotting a 0.1% solution of CI Disperse Red 60 in tetrahydrofuran on the carrier, it is dried to prepare a developed sample.
Procedure 3: Develop the developed sample with acetonitrile for 3 minutes at 25°C.
Procedure 4: Obtain the Rf value from the following formula.
(Formula) Rf value = Development distance of CI Disperse Red 60 / Development distance of acetonitrile 11. The printing method according to claim 10, wherein the fabric contains natural fibers or synthetic cellulose fibers. 12. The textile printing method according to claim 10, wherein the dyeing method is a sublimation transfer method. A printed fabric containing a colorant-scavenging compound and a sublimation colorant,
A printed fabric comprising, as the colorant-scavenging compound, a colorant-scavenging compound having an Rf value of 0.7 or less as determined by a paper chromatography method under the following conditions.
[Conditions of paper chromatography method]
Procedure 1: A cellulose filter paper is impregnated with a 10% solution of the colorant-scavenging compound and then dried to prepare a carrier.
Procedure 2: After spotting a 0.1% solution of CI Disperse Red 60 in tetrahydrofuran on the carrier, it is dried to prepare a developed sample.
Procedure 3: Develop the developed sample with acetonitrile for 3 minutes at 25°C.
Procedure 4: Obtain the Rf value from the following formula.
(Formula) Rf value = Development distance of CI Disperse Red 60 / Development distance of acetonitrile