JP2001207386A - Method of production for pigment-colored yarn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of production for a pigment-colored yarn exhibiting vivid color tone, and at the same time little in color unevenness and rich in flexibility. SOLUTION: This method of production for a pigment-colored yarn comprises attaching the following coloring solution on a yarn. The coloring solution is prepared by dispersing a microcapsulated pigment enclosing a pigment or a reversible thermal discoloration composition in a binder-containing vehicle, subsequently removing the excess coloring solution from the yarn which the coloring solution has been attached on, and heating and drying in a swinging or rotary type heating dryer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a method for producing a pigmented yarn. More specifically, the present invention relates to a method for producing a yarn colored with a pigment having a clear color tone, less coloring unevenness, and excellent flexibility and light resistance.

[0002]

2. Description of the Related Art Conventionally, as a method of dyeing yarn,
A method of dyeing with a dye may be mentioned, and a yarn reversibly discolored by a change in temperature and a production method thereof are disclosed in Japanese Utility Model Laid-Open No. 59-83985. When the yarn is dyed with the dyeing solution containing the dye, a clear color tone is hardly obtained, and particularly, the fluorescent color lacks sharpness. Further, since the dye has poor light fastness, it has a drawback that the color of the yarn fades with time. or,
As a production method of coloring the yarn with a coloring liquid containing a pigment, a method of immersing the yarn in the coloring liquid and then taking out and drying, or a method of spraying the coloring liquid onto the yarn can be considered. In the case of a method of taking out and drying after immersion, usually, a plurality of yarns are immersed and then taken out and dried, so that a supersaturated colored liquid remains between the yarns to cause binding of the yarns, There are disadvantages in that the amount of the binder adhered is too large and the flexibility is impaired, and the pigment adhering to the yarn is unevenly distributed to cause uneven coloring. In the method using a method in which the coloring liquid is sprayed onto the yarn, it is difficult to uniformly apply the coloring liquid to the yarn, and the pigment tends to be unevenly distributed to cause uneven coloring.
Furthermore, when coloring a spun yarn, particularly a wool yarn,
Coloring in the state of the fiber before spinning, coloring after spinning, or in the case of synthetic fiber, spinning after kneading the colorant pigment in the elementary fiber can be considered. When coloring is performed in this state, it is necessary to dry the coloring liquid while loosening the fibers, and the workability is poor, and the pigment on the yarn surface may be peeled off in the subsequent spinning process.
In addition, when coloring is performed after spinning, even when a coloring liquid using a normal dye is used, it is good, but a coloring liquid in which a general pigment or a reversible thermochromic microcapsule pigment used in the present invention is dispersed. When applied to, uneven coloring and the degree of hardening of the yarn are large, which impairs the merchantability. In addition, when spinning a synthetic fiber in which the pigment is kneaded in a raw fiber during spinning, a filament in which the pigment is kneaded is produced and spun, but a complicated manufacturing process and a manufacturing time are required, and
The material of the yarn is limited.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned disadvantages of the conventional dyed yarn, that is, the production of a pigment-colored yarn having less coloring unevenness and excellent flexibility and light resistance. It seeks to provide a way.

[0004]

The present invention relates to (a) an electron-donating color-forming organic compound, (b) an electron-accepting compound,
(C) In a microcapsule pigment containing a reversible thermochromic composition comprising a compound which is a reaction medium for reversibly causing the electron transfer reaction according to the above (a) and (b) and / or a vehicle containing the pigment as a binder. Adhering the colored liquid dispersed in the yarn, removing the supersaturated colored liquid from the yarn to which the colored liquid is adhered, heating in a rocking or rotary heating dryer,
A requirement is a method for producing a pigment-colored yarn obtained by drying. Furthermore, removing the supersaturated coloring liquid from the yarn to which the coloring liquid has been attached by a centrifuge, fixing the yarn to which the coloring liquid has been attached to the central portion of the centrifuge, and allowing the thread to adhere to the inner wall of the centrifuge. Centrifuging in a non-contact state to remove the supersaturated coloring liquid, performing squeezing by a pressure roll, and removing the supersaturated coloring liquid from the yarn to which the coloring liquid is attached by a centrifugal machine; Is a silicone resin emulsion, and the silicone resin emulsion is an emulsion represented by the general formula (1).

[0005] The method for producing the pigment-colored yarn of the present invention will be described in detail. Pigments dispersed in the coloring liquid include general colored pigments, fluorescent pigments, luminous pigments, metallic luster pigments, white pigments such as titanium oxide, and the like, and reversible thermochromic microcapsule pigments that reversibly change color with temperature. Is mentioned.
The reversible thermochromic microcapsule pigment contains a reversible thermochromic composition, and the reversible thermochromic composition comprises (a) an electron-donating color-forming organic compound, and (b) an electron-accepting compound. (C) A composition containing three components of a reaction medium for determining the temperature at which the color reaction of both occurs is suitably used. For example, JP-B-51-44706 and JP-B-51-44 proposed by the present applicant. 44707, Japanese Patent Publication No. 1-293
No. 98 can be used. The composition discolors before and after a predetermined temperature (discoloration point) as a boundary, exhibits a decolored state in a temperature range higher than the color change point, and a color developed state in a temperature range lower than the color change point. Only one particular state can exist in a region. That is, the other state is
The heat discoloration behavior is maintained while the heat or cold required to develop the state is applied, but returns to the state exhibited in the normal temperature range when the application of the heat or cold is stopped, and the hysteresis width is relatively small. It is a heat-decolorable reversible thermochromic composition shown. In addition, Japanese Patent Publication No. 4-17 proposed by the present applicant.
154, JP-A-7-179777, JP-A-7-33997, JP-A-8-39936, etc. exhibit large hysteresis characteristics, that is, plotted the change in coloring density due to temperature change. The shape of the curve changes color following a significantly different path when the temperature rises from a lower temperature side than the discoloration temperature range, and conversely, when the temperature lowers from a higher temperature side than the discoloration temperature, the color changes below the low-temperature side discoloration point. Heat decoloring that can be stored alternately even if the color development state in the temperature range or the decoloration state in the temperature range higher than the high-temperature side discoloration point is removed after the application of the cold or heat required for the color change Thermochromic color memory compositions of the type can also be utilized.

Further, Japanese Patent Application Laid-Open No. 11-1 proposed by the present applicant is disclosed.
No. 29623, JP-A-11-5973, etc., specific alkoxyphenol compounds having a straight-chain or side-chain alkyl group having 3 to 18 carbon atoms as the (b) electron-accepting compound contained in the composition A heat-colorable reversible thermochromic composition to which is applied is also applicable. Further, as the electron accepting compound contained in the heat coloring type reversible thermochromic composition, 3-hydroxybenzoic acid tridecyl ester, 3-hydroxybenzoic acid tetradecyl ester, 3-hydroxybenzoic acid pentadecyl ester, 3 -Hexadecyl hydroxybenzoate, 3
-Heptadecyl hydroxybenzoate, octadecyl 3-hydroxybenzoate, nonadecyl 3-hydroxybenzoate, eicosyl 3-hydroxybenzoate, henicosyl 3-hydroxybenzoate, doco 3-hydroxybenzoate Sil ester, 4-hydroxybenzoic acid tridecyl ester, 4
-Tetradecyl hydroxybenzoate, pentadecyl 4-hydroxybenzoate, hexadecyl 4-hydroxybenzoate, heptadecyl 4-hydroxybenzoate, octadecyl 4-hydroxybenzoate, nonadecyl 4-hydroxybenzoate Esters, eicosyl 4-hydroxybenzoate, heneicosyl 4-hydroxybenzoate,
Docosyl 4-hydroxybenzoate, tridecyl 3,4-dihydroxybenzoate, tetradecyl 3,4-dihydroxybenzoate, pentadecyl 3,4-dihydroxybenzoate, hexa-3,4-dihydroxybenzoate Decyl ester, heptadecyl 3,4-dihydroxybenzoate, octadecyl 3,4-dihydroxybenzoate, nonadecyl 3,4-dihydroxybenzoate, eicosyl 3,4-dihydroxybenzoate, 3,4- Heneicosyl dihydroxybenzoate, docosyl 3,4-dihydroxybenzoate, tridecyl 3,5-dihydroxybenzoate, tetradecyl 3,5-dihydroxybenzoate, pentade 3,5-dihydroxybenzoate Ester, 3,5-dihydroxybenzoic acid hexadecyl ester, 3,5-dihydroxybenzoic acid heptadecyl ester, 3,5-dihydroxybenzoic acid octadecyl ester, 3,5-dihydroxybenzoic acid nonadecyl ester, 3,5-dihydroxy Hydroxybenzoic acid esters such as eicosyl benzoate, heneicosyl 3,5-dihydroxybenzoate and docosyl 3,5-dihydroxybenzoate can also be used.

The above-described reversible thermochromic composition is used by being encapsulated in microcapsules. This is because the reversible thermochromic compositions can be maintained under the same composition under the various use conditions and can exert the same effect. By being encapsulated in the microcapsules, chemically and physically stable microcapsule pigments can be formed, and the particle diameter is in the range of 0.1 to 100 μm, preferably 1 to 50 μm, more preferably 2 to 30 μm. Fulfill. The microencapsulation is performed by a conventionally known interfacial polymerization method, in
There are Situ polymerization method, in-liquid curing coating method, phase separation method from aqueous solution, phase separation method from organic solvent, melting dispersion cooling method, air suspension coating method, spray drying method, etc., which are appropriately selected according to the application. Is done. Further, a secondary resin film may be further provided on the surface of the microcapsule according to the purpose to impart durability, or the surface characteristics may be modified for practical use.

[0008] Examples of the binder contained in the vehicle include conventionally known wax, low melting point thermoplastic resin, rubber, natural resin and synthetic resin. Particularly preferably used are synthetic resin emulsions, for example, acrylates, methacrylates, acryl-styrene copolymer resins, styrene resins, vinyl acetate resins, polyethylene resins, ethylene-vinyl acetate copolymer resins, chlorides. Emulsions of vinyl-vinyl acetate copolymer resin, butadiene-nitrile copolymer resin, alkyd resin, urethane resin, silicone resin and the like can be mentioned.

Any of the above-mentioned emulsions may be used. In particular, a silicone resin emulsion may be used even if the pigment adhering to the yarn surface and / or the pigment penetrating into the interior is fixed.
It has excellent yarn flexibility and durability such as abrasion resistance. Preferably as the silicone resin emulsion,
It is a compound represented by the general formula (1). Here, A and B in the formula can be exemplified by polyethylene glycol, polypropylene glycol, polytetramethylene glycol, or a copolymer thereof. R ₁ , R ₂ ,
R ₃ and R ₄ can be exemplified by hydrogen, methyl group, methoxy group and phenoxy group, and R ₅ , R ₆ and R ₇ can be exemplified by ethylene group and trimethylene group. X can be a 3,4-epoxycyclohexyl group or a glycidyl group. A diluting solvent is appropriately added to the coloring liquid as needed. In addition, the above-mentioned coloring liquid requires the same prompt dyeing agent, slow dyeing agent, leveling agent, pH adjusting agent, wetting agent, dye dissolving auxiliary agent and the like as the coloring liquid used for ordinary coloring, in addition to the pigment and the binder. Can be added according to

[0010] As the yarn colored by the coloring liquid,
Various materials and forms are effective, for example, wool,
Natural fibers such as cashmere, mohair, alpaca, cotton, hemp, silk, etc., regenerated cellulose, cellulose acetate, nylon, acrylic, polyester, nylon, vinyl chloride-vinyl acetate copolymer resin, vinyl chloride-acryl copolymer resin, polyethylene, polyvinyl Synthetic fibers or semi-synthetic fibers composed of alcohol, vinyl chloride, vinylidene chloride, polychloral, polyurethane, and the like, and spun yarns, filament yarns, woven yarns, ply yarns, twisted yarns, handicraft yarns formed alone or by blending. Examples of the form include a flat yarn.

Further, the yarn is made of known dyes, ultraviolet light emitting dyes, fluorescent whitening agents, pigments, fluorescent pigments, luminous pigments, luminous pigments, metallic luster pigments, extender pigments, thermochromic coloring agents, photochromic coloring agents, and the like. A composite color effect can also be imparted using a pre-colored one.

The method of adhering the coloring liquid to the yarn includes a method of penetrating and adhering the coloring liquid to the yarn by padding means, and a method of dipping the yarn in the coloring liquid. Immersion is preferably used. As a method of removing the supersaturated coloring liquid from the yarn to which the coloring liquid is attached, a method of performing centrifugal processing with a centrifuge and removing unnecessary coloring liquid from the yarn is preferable. This is because the supersaturated coloring liquid between the yarns can be quickly and uniformly removed, and the amount of the coloring liquid attached can be easily adjusted by adjusting the number of rotations and the rotation time of centrifugation. In addition, when the drawing process is performed by the pressure roll before the centrifugal processing, the time required for the centrifugal processing can be shortened because the trouble of removing the excess coloring liquid can be omitted. When performing the centrifugal processing, the yarn to which the coloring liquid is adhered may be fixed to a central portion of the centrifuge, and the supersaturated coloring liquid may be removed by centrifugation in a state where the yarn does not contact the inner wall of the centrifuge. preferable. This is to prevent the adhering liquid, which has been removed at one end, from adhering to the yarn again due to the yarn coming into contact with the inner wall of the centrifuge, and the yarn is arranged in an annular shape along the column disposed at the center of the centrifuge. Method. The supersaturated colored liquid when using wool or the like refers to a colored liquid in a supersaturated state exceeding the permissible amount of impregnation of the wool.

The yarn from which the supersaturated colored liquid has been removed as described above is heated and dried in a rocking or rotary heating dryer. In the oscillating or rotary heating dryer, the solvent attached to the yarn is removed by heating, and the pigment is uniformly attached in a short time to prevent coloring unevenness. Binding is prevented, and a pigment-colored yarn having high flexibility is obtained. The oscillating heating dryer may be a dryer that reciprocates in a horizontal direction or a vertical direction.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, after preparing a coloring liquid containing a pigment and a binder, the coloring liquid is adhered to the yarn by means of immersion or the like, and excess yarn is removed from the yarn using a centrifuge or a pressure roll. After removing the coloring liquid, it is a method of drying while heating in a rocking or rotary heating dryer to obtain a pigment-colored yarn. The pigment-colored yarn obtained as described above is used for toys such as artificial hair for dolls including animal-shaped toys, hair for dolls and the like, artificial hair and handicraft yarns. Further, a knitted fabric, a woven fabric, a fabric such as a braid can be formed from the yarn, and gloves, hats, socks,
Mufflers, scarves, sports or leisure clothing, clothes, kimonos, coats, sweaters, shirts, sleepwear, underwear, aprons, ties, and other toys, plush toys, artificial flowers, ribbons, handkerchiefs, towels, curtains, shoes Can also be used.

[0015]

EXAMPLES In the following examples, parts are by weight. Example 1 Preparation of a reversible thermochromic composition and a reversible thermochromic microcapsule pigment encapsulating the composition, 2 parts of 1,2-benz-6-diethylaminofluoran,
A reversible thermochromic composition obtained by heating and dissolving 6 parts of 1,1-bis (4-hydroxyphenyl) -n-octane and 50 parts of stearyl caprate at 120 ° C. to form a homogeneous compatible solution,
It was encapsulated in microcapsules by an epoxy resin / amine interfacial polymerization method to obtain a reversible thermochromic microcapsule pigment having an average particle size of 10 to 20 µm. The microcapsule pigment becomes pink at 28 ° C or less and colorless at 34 ° C or more.

The reversible thermochromic microcapsule pigment 2
To 00 parts, 200 parts of an aqueous acrylic ester-based emulsion resin, 560 parts of water, 10 parts of a silicone antifoaming agent, and 30 parts of propylene glycol were added and uniformly dispersed to obtain a colored liquid.

Acrylic / yarn = 60 /
After immersing 100 g of a 40 / meter-count 4/20 wool yarn and attaching a coloring liquid to the wool yarn, taking it out, performing drawing with a pressure roll to remove a supersaturated coloring liquid,
It was set in a centrifuge and subjected to centrifugal processing to completely remove the supersaturated colored liquid. When setting the yarn in the centrifuge, a column is provided in the center of the centrifuge, and the skein of the wool is wound around the same diameter as the column. The thread was prevented from contacting the inner wall.

The yarn from which the supersaturated colored liquid has been removed is put in a rotary heating dryer (rotary clothing dryer) and heated at 110 ° C.
The mixture was heated and rotated for 30 minutes to obtain a pigment-colored yarn. The pigmented yarn obtained as described above is white at 34 ° C. or higher,
It exhibited a pink color at 28 ° C. or lower, the color tone of the pink color was clear and uniform, there was no uneven coloring, and the yarn was rich in flexibility.

Example 2 Preparation of a reversible thermochromic composition and a reversible thermochromic microcapsule pigment containing the composition, 2 parts of 1,2-benz-6-diethylaminofluoran,
2,2-bis (4-hydroxyphenyl) propane 6
Part, a reversible thermochromic composition obtained by heating and dissolving 50 parts of n-nonyl palmitate at 120 ° C. to form a homogenous solution is encapsulated in microcapsules by an interfacial polymerization method of an epoxy resin / amine to obtain an average particle. A reversible thermochromic microcapsule pigment having a diameter of 10 to 20 μm was obtained. The microcapsule pigment becomes pink at 18 ° C. or less and colorless at 30 ° C. or more.

The reversible thermochromic microcapsule pigment 2
To 00 parts, 200 parts of an aqueous acrylic ester-based emulsion resin, 560 parts of water, 10 parts of a silicone antifoaming agent, and 30 parts of propylene glycol were added and uniformly dispersed to obtain a colored liquid.

100 g of 100% acrylic wool of 4/10 metric count is immersed in the above-mentioned coloring liquid to make the coloring liquid adhere to the wool, taken out, set in a centrifugal machine and subjected to centrifugal processing to complete the processing. The supersaturated colored liquid was removed. When setting the yarn in the centrifuge, a column is provided in the center of the centrifuge, and the skein of the wool is wound around the same diameter as the column. The thread was prevented from contacting the inner wall.

The yarn from which the supersaturated colored liquid has been removed is put into a rotary heating dryer (rotary clothing dryer) and heated at 110 ° C.
The mixture was heated and rotated for 30 minutes to obtain a pigment-colored yarn. The pigmented yarn obtained as described above exhibits a pink color at a temperature of 18 ° C. or less, and maintains its color tone at a temperature range of about 28 ° C. or less,
It exhibits white color at 30 ° C. or more and can maintain its color tone at a temperature range of about 20 ° C. or more. The pink color tone is clear, uniform, and has no color unevenness, and the yarn is rich in flexibility. there were.

Example 3 A pigment-colored yarn was obtained in the same manner as in Example 1, except that a lace yarn made of 100% cotton was used instead of the wool used in Example 1. The yarn exhibited the same color change as in Example 1, had no coloring unevenness, and was rich in yarn flexibility.

Example 4 To 50 parts of a fluorescent yellow pigment, 200 parts of an aqueous acrylate emulsion resin, 560 parts of water, 10 parts of a silicone defoamer, and 30 parts of propylene glycol were added, and the mixture was uniformly dispersed to form a colored liquid. Obtained.

Acrylic / yarn = 60 /
After immersing 100 g of a 40 / meter-count 4/20 wool yarn and attaching a coloring liquid to the wool yarn, taking it out, performing drawing with a pressure roll to remove a supersaturated coloring liquid,
It was set in a centrifuge and subjected to centrifugal processing to completely remove the supersaturated colored liquid. When setting the yarn in the centrifuge, a column is provided in the center of the centrifuge, and the 'kkusuri' of the wool is wound around the same diameter as the column. The thread did not come into contact with the inner wall of the.

The yarn from which the supersaturated colored liquid has been removed is put into a rotary warming dryer (rotary clothes dryer) at 110 ° C.
The mixture was heated and rotated for 30 minutes to obtain a pigment-colored yarn. The pigment-colored yarn obtained as described above exhibits a bright fluorescent yellow, and the color tone of the fluorescent yellow is clear, uniform, and has no color unevenness, and the yarn has excellent flexibility and light resistance. there were.

Example 5 100 parts of the microcapsule pigment prepared in Example 1, 150 parts of an aqueous silicone resin emulsion (trade name: KT-7014, manufactured by Takamatsu Yushi Co., Ltd.), silicone antifoam 1
0 parts and 30 parts of propylene glycol were mixed and dispersed to obtain a colored liquid.

100 g of 100% acryl, 4/10 meter yarn is immersed in the coloring liquid to attach the coloring liquid, and then taken out and squeezed with a pressure roll to remove the supersaturated coloring liquid. The mixture was set in a centrifuge and subjected to centrifugal processing to completely remove the supersaturated colored liquid. When setting the yarn in the centrifuge, a column is provided in the center of the centrifuge, and the skein of the wool is wound around the same diameter as the column. The thread was prevented from contacting the inner wall.

The yarn from which the supersaturated colored liquid has been removed is put into a rotary warming dryer (rotary clothes dryer) at 110 ° C.
The mixture was heated and rotated for 30 minutes to obtain a pigment-colored yarn. The pigment-colored yarn obtained as described above exhibits a vivid color change similar to that of Example 1, the color tone is clear and uniform, there is no uneven coloring, and the color change function is not impaired by repeated practical use. A very flexible yarn could be obtained.

Comparative Example 1 100 parts of the microcapsule pigment prepared in Example 1, 600 parts of an aqueous urethane resin emulsion, 270 parts of water, and 30 parts of a curing agent were mixed and dispersed to obtain a colored liquid for spraying.

Acrylic / yarn = 60/40, metric count 4/20 yarn 10
0 g was spray-coated, heated at 110 ° C. for 30 minutes with a blower-type constant temperature and constant temperature oven, and dried to obtain a pigment-colored yarn. The pigment-colored yarn obtained as described above had uneven coloring and poor flexibility, which impaired commercial value.

Comparative Example 2 Reversible thermochromic microcapsules 20 prepared in Example 2
0 parts, aqueous acrylate emulsion resin 20
0 parts, 560 parts of water, 10 parts of a silicone-based antifoaming agent, and 30 parts of propylene glycol were added and uniformly dispersed to obtain a colored liquid.

100 g of 100% acrylic, 4/10 metric wool yarn was immersed in the coloring solution to make the coloring solution adhere to the yarn, and then the supersaturated coloring solution was removed by hand. The yarn from which the supersaturated colored liquid has been removed is treated at 110 ° C. for 30 minutes.
The mixture was heated and dried with a blower-type constant-temperature thermostat for minutes to obtain a pigment-colored yarn. The pigment-colored yarn obtained as described above had uneven coloring and poor flexibility, which impaired commercial value.

[0034]

According to the method for producing a pigment-colored yarn of the present invention, the yarn to which a coloring liquid containing a pigment is adhered is heated and dried by using a rotary heating dryer, so that the coloring unevenness of the yarn is reduced. It is possible to provide a method for producing a pigment-colored yarn, which is small and has excellent yarn flexibility. In particular, in the system using a general pigment as a pigment, it is possible to provide a pigmented yarn excellent in light resistance,
Further, in the system using the reversible thermochromic microcapsule pigment, in addition to the above-described effects, it is possible to provide a highly decorative pigment-colored yarn that reversibly changes color due to a temperature change. Also, in the process before heating and drying using a oscillating or rotary heating dryer, centrifugal processing is performed by a centrifugal machine to remove unnecessary coloring liquid from the yarn. A method for producing a pigment-colored yarn excellent in production efficiency can be provided because it can be removed quickly and evenly, and furthermore, if drawing by a pressure roll is performed before centrifugal processing, the trouble of removing excess adhered liquid can be omitted. can do. Furthermore, by using a silicone resin emulsion as a binder contained in the coloring liquid, a very flexible yarn can be obtained, and a pigment-colored yarn suitable for producing various fiber processed products can be provided.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C08K 5/00 C08K 5/00 4J038 C08L 83/12 C08L 83/12 4L031 101/00 101/00 4L033 C09D 7 / 12 C09D 7/12 Z 4L036 183/12 183/12 201/00 201/00 D02G 3/00 D02G 3/00 D06B 15/10 D06B 15/10 D06M 13/228 D06M 13/228 15/643 15/643 23/12 23/12 D06P 1/52 D06P 1/52 F term (reference) 3B154 AA03 AA09 AB15 BA07 BA19 BA39 BB02 BB03 BB08 BB12 BB32 BB70 BD01 BD17 BD18 BF27 BF30 DA13 DA30 4F070 AA13 AA18 AA31 AC AE04 CA01 CB12 4H057 AA02 BA13 BA14 BA15 BA22 BA41 CA19 CB08 CB27 CC02 DA01 DA33 FA15 FA18 GA07 GA24 GA25 HA01 HA09 JA10 JA90 JB03 4J002 BB031 BB061 BC001 BF021 BG001 C K001 CP031 DE136 EH127 FD096 FD207 4J035 BA02 CA111 GA08 GB05 LA03 LB02 4J038 BA211 CA071 CB021 CB051 CC021 CD021 CF021 CG031 CG141 CG161 DB291 DD231 DADG DL151 GA02 GA07 GA15 HA156 JA10 MA03 NA01 MA01 MA03 MA01 MA03 MA01 AB03 AC15 BA22 BA99 CA59 CA70 4L036 PA26 UA12 UA16

Claims (6)

[Claims] (1) an electron-donating color-forming organic compound,
(B) an electron-accepting compound, (c) a microcapsule pigment containing a reversible thermochromic composition comprising a compound which is a reaction medium for reversibly causing the electron transfer reaction according to (a) and (b) above, and / or Alternatively, a coloring liquid in which a pigment is dispersed in a vehicle containing a binder is attached to the yarn, a supersaturated coloring liquid is removed from the yarn to which the coloring liquid is attached, and the yarn is heated in a rocking or rotary heating dryer. And a method for producing a pigment-colored yarn obtained by drying. 2. The method for producing a pigment-colored yarn according to claim 1, wherein a supersaturated colorant is removed from the yarn to which the colorant has been adhered by a centrifuge. 3. The method according to claim 2, wherein the yarn to which the coloring liquid is adhered is fixed to a central portion of a centrifuge, and centrifuged in a state where the yarn does not contact the inner wall of the centrifuge to remove the supersaturated coloring liquid.
A method for producing the pigment-colored yarn according to the above. 4. The method for producing a pigment-colored yarn according to claim 2, wherein a drawing process is performed by a pressure roll, and a supersaturated colorant is removed from the yarn to which the colorant has been adhered by a centrifuge. 5. The method according to claim 1, wherein the binder is a silicone resin emulsion. 6. The reversible thermochromic coloring liquid for fibers according to claim 5, wherein the binder is a silicone resin emulsion represented by the following general formula (1). Embedded image [Wherein Q ₁ , Q ₂ and Q ₃ are hydrogen or a group represented by the general formula (2); A and B are the same or different polyalkylene glycols having a number average molecular weight of 300 to 4000, and R ₁ , R ₂ , R
₃ and R ₄ are hydrogen or a monovalent hydrocarbon group having 1 to 6 carbon atoms, R ₅ , R ₆ and R ₇ are an alkylene group having 1 to 5 carbon atoms, X is an epoxy group, , N is 0 or an integer of 1 or more, and 20 ≧ m + n ≧ 1;
And p is 0 or 1, and a + b + c = 5
1000, and the bonding order of the repeating units of the general formulas (1) and (2) is arbitrary.]