JPH08170280A - Method for dyeing textile product comprising polyester fiber and regenerated cellulose fiber - Google Patents

Abstract

PURPOSE: To provide the subject method intended to be excellent in the solid dyeability for regenerated cellulose fibers and polyester fibers and give the subject dyed textile product having washing fastness at a level equal to that of a dyed product of polyester fibers alone. CONSTITUTION: In dyeing with a disperse dye a textile product comprising polyester fibers and viscose rayon containing 10-40wt.% of polymer fine particles dyeable with the disperse dye, the textile product is heat-treated with saturated steam at 100-140 deg.C in such a state that the moisture content of the product comes to <=100wt.% of the whole fiber weight.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for dyeing a fiber product containing a regenerated cellulose fiber which can be dyed with a polyester fiber and a disperse dye, and in particular, has an excellent dyeing fastness and is excellent in the same color of both fibers. The present invention relates to a method for dyeing a textile product.

[0002]

Regenerated cellulose fibers are well known in viscose rayon and cupra, and these fibers have excellent hygroscopicity and unique texture. However, it is difficult to use it alone for outer garments because of its low morphological stability and strength, and it is usually used in common with synthetic fibers, especially polyester fibers.

Conventionally, regenerated cellulose fibers are dyed with direct or reactive dyes, while polyester fibers are dyed with disperse dyes. Therefore, in order to dye a woven or knitted material composed of regenerated cellulose fibers and polyester fibers, polyester fibers are dyed with a disperse dye, and regenerated cellulose fibers are dyed with a reactive dye or a direct dye, and these dyeing methods are a two-bath two-stage method. In addition, the one-bath two-stage method and the like are adopted, and it takes a long time to dye and the dyeing cost is high.
Moreover, it is often difficult to match the color of the polyester fiber and the regenerated cellulose fiber because the dyes belong to different groups.

[0004]

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a dyeing method capable of significantly reducing the dyeing cost of a textile product such as a woven or knitted fabric composed of regenerated cellulose fiber and polyester fiber, as compared with a conventional complicated dyeing method. Is to provide
Further, a method for dyeing a fiber product composed of regenerated cellulose fiber and polyester fiber, which has excellent color matching between regenerated cellulose fiber and polyester fiber and has the same level of washing fastness as a dyed product obtained by dyeing polyester fiber alone. Is to provide. Further, the object of the present invention is to provide a printing method suitable for such a textile product.

[0005]

Means for Solving the Problems That is, the present invention relates to dyeing a fiber product containing regenerated cellulose fibers and polyester fibers containing 10 to 40% by weight of polymer fine particles which can be dyed with a disperse dye, with a disperse dye. A method for dyeing a textile product, which comprises heat-treating with saturated steam of 100 ° C. to 140 ° C. in a state that the water content of the textile product is 100% or less with respect to the weight of the fiber, Specifically, when dyeing such a textile product with a disperse dye, the dyeing liquid is applied to the textile product such that the water content of the dyeing liquid containing the disperse dye is 30 to 100% of the fiber weight. A method for dyeing a textile product, which comprises heat-treating with saturated steam at 100 ° C. to 140 ° C. Further, after printing a colored paste containing a disperse dye on the textile product, 1
A method for dyeing a textile product, which comprises heat-treating with saturated steam at 00 ° C to 140 ° C.

The regenerated cellulose fiber in the present invention means viscose rayon and cupra. And the fiber product, spun yarn, filament yarn, long and short composite yarn, which is composed of the regenerated cellulose fiber and polyester fiber,
The control includes woven fabrics, knitted fabrics, non-woven fabrics, and clothing, living materials, industrial materials, and miscellaneous goods / daily necessities that use at least a part thereof. Further, the method of combining the regenerated cellulose fiber and the polyester fiber in the fiber product may be, for example, a twisted yarn, an air entanglement by interlacing, a pretwisted false twist, a spun twisted yarn, a mixed yarn, or the like. It is also possible to use a combination of methods such as interlaced knitting or interweaving in which each thread is used properly. Further, the ratio of the polyester fiber and the regenerated cellulose fiber in the textile product can be variously changed according to the composite form of the both and the application. For example, it is preferable to use regenerated cellulose fibers as a main component because the unique texture and functionality (moisture absorption, antistatic property, etc.) of the fibers can be fully utilized. On the other hand, polyester fibers play an important role in obtaining strength reinforcement and morphological stability, which are defects of regenerated cellulose fibers, when they are combined with regenerated cellulose fibers to form yarns. When designing, the mixing ratio of the polyester fibers is preferably 30% by weight to 50% by weight. If it is less than 30% by weight, the strength may be too low for an outer garment, or the shrinkage due to washing may be high and the shape stability may not be obtained. On the other hand, if it exceeds 50% by weight, the difference in the feel from the woven or knitted product of polyester fibers alone may not be clear.

It is important that the regenerated cellulose fibers constituting the article to be dyed of the present invention contain 10 to 40% by weight of polymer fine particles which can be dyed with a disperse dye.
If it is less than 10% by weight, the relationship A / B value between the dyeing amount A in the regenerated cellulose fiber and the dyeing amount B in the polyester fiber in the dyeing method of the present invention becomes smaller than 0.70. It is not preferable because it is difficult to obtain the same color between fibers. On the other hand, if it exceeds 40% by weight, fluff is liable to occur during the yarn making, and the physical properties of the fiber are significantly deteriorated. The lower limit of the content is preferably 15% by weight and the upper limit is 30% by weight in view of the balance between the physical properties of the regenerated cellulose fiber and the dyeing ratio between the polyester fiber and the regenerated cellulose fiber.

If the content is within the above range, not only one kind of polymer but also two or more kinds of different polymer fine particles may be mixed. It does not matter even if the different distributions are used together.

It is essential that the regenerated cellulose fiber used in the present invention can be dyed with a disperse dye, and when dyed under the following dyeing conditions (hereinafter sometimes simply referred to as reference dyeing conditions). The disperse dye dyeing ratio is preferably 60% or more, and particularly preferably 70% or more. When it is less than 70%, when the above-mentioned fiber product is dyed in one bath, a large amount of disperse dye is taken up on the polyester fiber side, which may cause a problem in terms of color uniformity. <Dyeing conditions>Dye; Sumikaron Brill Red SE-2BF (Sumitomo Chemical Co., Ltd.) 3% owf Auxiliary agent: Disper TL 1 g / l Ultra MT level 1 g / l Bath ratio; 1:50 Dyeing temperature / time; 120 ° C x 40 minutes (Raise temperature from 40 ° C. to 120 ° C. in 30 minutes and keep at 120 ° C. for 40 minutes) Reduction cleaning: NaOH 1 g / l, Na ₂ S ₂ O ₄ 1 g / l, amylazine (Daiichi Kogyo Seiyaku Co., Ltd.) 1 g / l, 80 ° C. × 20 minutes Washing with water; 30 minutes Drying; 60 ° C. × 10 minutes The dyeing rate of the disperse dye in the present invention is a value determined by the method shown below: Dyeing rate (%) = [( S ₀ −S ₁ ) / S ₀ ] × 100 S ₀ : The dye solution before dyeing is diluted with an aqueous acetone solution (acetone / water = 1/1 volume ratio) to a predetermined dilution degree, and the dye solution is spectrophotometer [ Hitachi 307 color analyzer (Hitachi Ltd.) Tokoro Ltd.)] Maximum absorption wavelength absorbance at S ₁ measured by: the dye residual solution after dyeing, optionally diluted adjusted at a predetermined dilution by aqueous acetone (acetone / water = 1/1 by volume) Absorbance at the maximum absorption wavelength of the dye solution measured by a spectrophotometer When dilution is performed, it is desirable to dilute so that the maximum absorbance is about 0.6. In addition, the dye solution before dyeing may be diluted, and the dye residual solution may not need to be diluted because the dye concentration is low.In this case, the dilution ratio of the solution before dyeing should be the absorbance of the residual solution. It is necessary to calculate the dyeing rate by multiplying by.

Examples of the polymer (hereinafter, also simply referred to as a raw material) constituting the dispersible dyeable fine particles contained in the regenerated cellulose fiber include nylon 6 and nylon 6
Polyamides such as 6 and the like, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polymethylmethacrylate, methylmethacrylate / methacrylic acid copolymers, methylmethacrylate / methacrylic acid / styrene copolymers, acrylic acid / styrene polymers,
Acrylonitrile / styrene-based polymers, polymethylsilsesquioxane, silicone-based polymers such as methyl silicone rubber, urethane polymers, etc. may be mentioned. From the viewpoint of dyeability and dye fastness to the original disperse dye, polyester-based Thermoplastic polymers such as coalesced and acrylic polymers are preferably used. In particular, when importance is attached to the same color as the polyester fiber, it is preferable to use a polyester polymer as the polymer forming the fine particles.

The average particle size of the polymer fine particles is 0.05.
It is preferably ˜5 μm. When it is less than 0.05 μm, the yarn-forming property and the fiber physical properties are not significantly deteriorated, but the dyeing property and fastness by the dye are decreased, and depending on the kind of the polymer constituting the fine particles, an organic solvent for dry cleaning or the like is used. The treatment may cause a problem of easy elution. Therefore, the preferable lower limit value is 0.1 μm, particularly 0.2 μm. On the other hand, when it exceeds 5 μm, stable spinning cannot be performed due to clogging of the spinning nozzle and remarkable generation of fluff, and the strength and elongation of the obtained fiber are low and the toughness is significantly reduced. When the physical properties of the fiber are particularly emphasized, the upper limit of the average particle size of the fine particles is 2.5 μm, especially 1.5 μm.
Is preferred.

Such polymer fine particles can be obtained, for example, by a method of physically finely pulverizing a polymer chip or powder into a fine powder by using a publicly known pulverizer, or by a process of polymerizing a polymerizable monomer. Fine particles can be produced by a polymerization technique such as a method of forming particles and a method of forming particles from a polymer solution in the form of microdroplets. Depending on the average particle size order of the particles used, it is only necessary to select a means for making the particles finer, but in fact, depending on the type of polymer, it may be extremely difficult to grind from the micron to sub-micron order, or even with the polymerization method. Some cannot be manufactured. As an example of the case of using a polymerization method, in order to obtain fine particles having a particle size of about 0.05 to 1 μm, an emulsion polymerization method, a soap-free emulsion polymerization method, or a seed emulsion polymerization method is preferably adopted.
When the particle size is 1 to 5 μm, a seed emulsion polymerization method, a two-step swelling method, a dispersion polymerization method and the like are suitable. Further, these polymers may be solid fine particles or hollow fine particles, and when hollow fine particles are used, high hiding property and weight saving of fibers can be realized at the same time.

The fine polymer particles may be added to the regenerated cellulose fiber in any step until the spinning dope is spun from the nozzle, and the fine polymer particles may be directly added to the spinning dope. According to such a method, since the fine particles are likely to aggregate, an aqueous dispersion of the fine particles is prepared in advance, and this is added to a spinning stock solution so as to have a predetermined concentration and mixed, or such an aqueous dispersion is separately prepared. Instead, it is preferable to prepare the spinning dope containing the fine particles so that the concentration becomes a predetermined concentration from the beginning. When manufacturing various brands with different fine particle concentrations, it is more rational to prepare the aqueous dispersion separately and add / mix it to the spinning stock solution line according to the brand. It is necessary to carefully adjust the aqueous dispersion of the fine particles so that the fine particles do not aggregate in the dispersion. For that purpose, it is necessary to adjust the concentration of the fine particles to 10 to 50% by weight, particularly 15 to 30% by weight. It is preferred to prepare the dispersion. Further, in order to stably disperse the fine particles in the dispersion liquid or the spinning dope, it is preferable to use a dispersion aid, and particularly when the spinning of viscose rayon as the regenerated cellulose fiber is targeted, for example, polyoxyethylene. 15 to 30% by weight of nonionic dispersion aid such as alkylamino ether based on the fine particles.
It is preferable to add to some extent. The fine particles are added to the spinning dope by thoroughly dispersing and mixing the fine particles by a dispersing means such as a stirring blade, defoaming and degassing, and then spun from the spinning nozzle into the regeneration bath, drawn, and taken at a predetermined speed. The regenerated cellulose fiber of the present invention can be manufactured.

In particular, it is important to thoroughly stir and mix the fine particles in order to uniformly disperse the fine particles in the stock solution for spinning. However, spinning using a stock solution which has been agitated undesirably reduces the spinnability. Further, in spinning, defoaming of the stock solution is very important, and if defoaming is not sufficiently performed, stable spinning cannot be performed. Therefore, about 6 to 30 hours,
It is preferable to use a spinning stock solution that has been statically degassed or vacuum degassed for 1 to 24 hours.

A method for producing viscose rayon as an example of regenerated cellulose fiber will be explained. Viscose rayon produced by a usual method has a low strength of 1 g / d when wet, but In the case where the third component is added to viscose and spinning is performed, further reduction in strength is usually caused, so that practical fibers have not been obtained in many cases. Therefore, in the present invention, the alkali concentration of viscose is 6.5 to 8% by weight, and particularly preferably 7 to 7.5% by weight in order to suppress the strength reduction of the regenerated cellulose fiber.
And the draw ratio is about 15 to 25% so that the wet strength of the fiber is 0.4 g / d or more, preferably 0.45.
It is better to control to g / d or higher.

When the alkali concentration exceeds 8%, problems such as a decrease in spinning speed and insufficient scouring property are likely to occur due to delay in coagulation / regeneration. On the other hand, if it is less than 6.5%, it is difficult to keep the wet strength within the range of the present invention. In addition, known conditions can be adopted for the aging degree and viscosity of viscose, for example, the aging degree of 8 to 15 cc and viscosity of 20 to 60 poise can be adopted. Further, the bath composition of the coagulation / regeneration bath is, for example, 8 to 12% of sulfuric acid and 1 of sodium sulfate.
3 to 30%, zinc sulfate 0 to 2%, the bath temperature is 45
~ 65 ° C is common.

As the spinning apparatus itself, a conventionally known viscose rayon producing apparatus can be used. Specifically, a centrifugal spinning machine, a bobbin spinning machine, a Nelson continuous spinning machine,
A drum type continuous spinning machine, a Crujan type continuous spinning machine, an industrial type continuous spinning machine, an Oscar Cohon type continuous spinning machine, a net process type continuous spinning machine, etc. can be used, and the spinning speed is 50 to 400 m / min. Is common,
As the scouring, washing with water and drying conditions, conventionally known conditions can be adopted as they are. In particular, in the field of clothing, it is preferable to manufacture with a continuous spinning machine because there are few characteristic unevenness in the yarn length direction. Further, in the case of supporting high speed spinning of 200 m / min or more, it is preferable to use a flow tube type spinning device.

The strength of the fiber when wet depends on the purpose of use of the fiber, but when rayon is used alone, it is 0.
It is preferably 5 g / d or more. However, when it is mixed with a synthetic fiber having good strength such as polyester fiber, 0.4 g / d as described above is sufficient for practical use.

In the above description, the example in which the alkali concentration of viscose and the draw ratio are changed from the usual conditions has been described. However, the regenerated cellulose fiber of the present invention is not limited to the fiber obtained by such a method, and the viscose is not limited. In the production of regenerated cellulose fibers other than coarse rayon, the purpose can be achieved by changing the spinning speed and the draw ratio. In addition, the technique of the present invention can be applied to cellulose fibers obtained by a solvent spinning method in which cellulose is dissolved in an organic solvent and spun by selecting polymer fine particles that are insoluble in the organic solvent.

Next, as the polyester fiber constituting the textile product which is the article to be dyed of the present invention, for example, a fiber made of polyalkylene terephthalate such as polyethylene terephthalate or polybutylene terephthalate can be mentioned. In addition to these, dicarboxylic acid components such as isophthalic acid, 5-metal sulfoisophthalic acid, naphthalene dicarboxylic acid, adipic acid, sebacic acid, etc. and carbon numbers 2 to 9 such as ethylene glycol, propylene glycol, butylene glycol, hexamethylene glycol and nonanediol. A polyoxyalkylene glycol such as alkylene glycol, diethylene glycol, polyethylene glycol, polypropylene glycol, polybutylene glycol, etc., and at least one polyhydric alcohol component such as pentaerythritol. Min As may be one that is copolymerized 20 mol% or less. Further, these polyesters may be used as a composition, and inorganic fine particles such as titanium oxide, silica, alumina and barium sulfate, and additives having various functionalities may be added depending on the purpose.

The cross section of the polyester fiber is not limited to a round cross section, but a triangular cross section, a flat cross section, a cross cross section, a Y-shaped cross section, and a T cross section.
It can be freely selected depending on the purpose, such as a V-shaped cross section or a C-shaped cross section. Further, unless the effects of the present invention are impaired,
It may be a side-by-side type or a core-sheath type composite fiber, or a thick and thin fiber having a thickness unevenness in the length direction of the fiber. Further, the fiber fineness is not particularly limited because it can be appropriately set according to the purpose of use, but for example, fibers having a single fiber fineness of 0.5 to 6 dr can be used so that the yarn fineness becomes 20 to 150 dr. preferable.

In the present invention, if the fiber product containing the regenerated cellulose fiber and the polyester fiber is composed of the polyester fiber and the regenerated cellulose fiber dyeable with the disperse dye, the method for producing the fiber product itself is Known techniques can be adopted. For example, polyester multifilament is used as a high shrinkage component and interlaced fiber is mixed with regenerated cellulose fiber to make a different shrinkage mixed yarn, or both fibers are made into a spun yarn by a mixed spinning technique depending on the intended fabrication. It can be made into various product forms.

In the present invention, regarding the fiber product containing the above-mentioned regenerated cellulose fiber and polyester fiber, the amount of water contained in the fiber product is 100% with respect to the fiber weight.
It is important to heat-treat with saturated steam at 100 ° C. to 140 ° C. in the following condition. If the water content exceeds 100% with respect to the weight of the fiber product, excessive swelling of the regenerated cellulose fiber occurs due to the presence of excessive water when heated by saturated steam, and the polymer fine particles in the regenerated cellulose fiber once become swelled. The adsorbed disperse dye separates from the fine particles, moves to the polyester fiber side, and is dyed,
It becomes difficult to obtain the same color property between the regenerated cellulose fiber and the polyester fiber, which is the object of the present invention.

The control of the water content of the textile product varies depending on the dyeing method, but it is roughly classified into the case of dyeing and the case of printing.
First, the case of dipping will be described. For example, after introducing a textile product to be dyed into a dyeing bath, excess dyeing liquid (water) is squeezed out with a squeezing roller such as a mangle.
It can be adjusted to 0% or less. However, when reducing the water content, there is a limit to the equipment such as a squeezing roller, and uneven squeezing may occur when squeezing excess dyeing liquid (water) from the textile product. Therefore, it is necessary to substantially set the water content to 30% or more.

On the other hand, in the case of printing (printing), a color paste composition containing a disperse dye is prepared, a textile product is printed with the composition, and a drying treatment is carried out at a temperature of 100 ° C. or higher. The water content in the paste composition is 100% or less with respect to the fiber product, and there is little problem of the mixing of dyes between the two fibers due to the excessive water as described above.

In the present invention, it is important to heat-treat the fiber product adjusted to have such a predetermined amount of water and having the disperse dye attached to the fiber surface, in the atmosphere of saturated steam at 100 to 140 ° C. In this heat treatment, the presence of high temperature saturated steam causes the regenerated cellulose fibers to swell moderately, and the disperse dye molecules permeate and diffuse into the fibers in the loose state of the molecular arrangement, and are dyed to the polymer fine particles. . For this heat treatment with saturated steam, for example, a conventionally known method of high pressure steaming (HP) can be adopted, and a batch type or continuous type device can be used as the steamer. Specifically, for example, a cottage type steamer used for printing, a deco type steamer,
A beam type steamer or the like can be used, and a CUT-AJ type manufactured by Hisaka Seisakusho can be used as an airflow dyeing finisher. In particular, when it is desired to soften the texture of a textile product or to make a peach-skin-like fibril, or further to set the above A / B value to 0.90 or more, a heating method in saturated water vapor is used. It is more effective when done with a dyeing finishing machine.

In the present invention, the heat treatment is 100 ° C. to 1
It is important to work with saturated steam at 40 ° C. 100
It is difficult to achieve the object of the present invention by atmospheric pressure steaming of less than ° C, high temperature steaming using superheated steam of less than 100% saturation, and thermosol dyeing. When the saturated steam temperature is lower than 100 ° C., the dyeing property to the disperse dye is lowered together with the regenerated cellulose fiber and the polyester fiber, and it is difficult to obtain a deep color, which is not preferable. On the other hand, when the saturated steam temperature exceeds 140 ° C., the regenerated cellulose fiber is deteriorated and the fiber strength is lowered, which is not preferable. The lower limit of saturated water vapor is 1 in order to impart good light fastness to dyed regenerated cellulose fibers.
20 ° C., and the upper limit is preferably 135 ° C. The heat treatment time with saturated steam is preferably 10 to 50 minutes, particularly preferably 20 to 40 minutes.

In the above means, the dyeing liquor containing the disperse dye is applied to the textile product in advance, and the textile product is heated with saturated steam. In the present invention, 100 is added to the weight of the textile product to be dyed. A method of preliminarily adjusting a dyeing liquid having a water content of not more than 10% and directly adding the dyeing liquid and the untreated dyeing material to the above airflow dyeing finishing machine at the same time without including it in the dyeing material It also includes.

In the fiber product dyed by the dyeing method of the present invention, the dyeing amount A of the disperse dye in the regenerated cellulose fiber is A.
A and the amount B of disperse dye in polyester fiber
The characteristic is that / B is 0.70 or more, and excellent same color can be achieved. The dyed amount of each is to take out the regenerated cellulose fiber and the polyester fiber from the fiber product, perform Soxhlet extraction with a 57% pyridine aqueous solution for each fiber of a certain weight, and use the extract with the same dilution degree for both fibers if necessary. With 57% pyridine aqueous solution, and the absorbance is measured at the maximum absorption wavelength with a spectrophotometer [Hitachi 307 color analyzer (manufactured by Hitachi, Ltd.)] which is the following measuring device. The dyeing amount is obtained from another calibration curve, and the dyeing amount ratio A / B of the regenerated cellulose fiber and the polyester fiber is obtained. When diluting, the maximum absorbance is 0.6
It is preferable to dilute the solution to a certain degree. If the A / B value, which is the dyeing ratio between the two fibers, is smaller than 0.7, a remarkable difference in shade occurs. Therefore, the ratio is preferably 0.75 or more. Further, even if the ratio becomes too large, the same color property cannot be achieved, so that the ratio is preferably 1.3 or less.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited thereto.
In the present invention, the average particle size, the wet strength and the content of fine particles were determined by the following methods. (1) Average particle size: 5,000 to 20,000 with an electron microscope
For fine particles observed in a fiber cross section magnified 0 times, the diameter is measured if the shape of the particle is a perfect circle or a substantially circle, and the major axis is measured if the shape is non-circular, and the average value of the diameter of the particles present in one cross section is taken. Then, this is done in five or more cross sections and the average value is taken. In the case of a fine particle dispersion, the particle size distribution is measured using, for example, a Microtrac particle size distribution measuring device, and the highest peak point particle size (MV
The value) is the average particle size. (2) Fine particle content (= cellulose addition rate); a pre-weighed regenerated cellulose fiber sample is dissolved in an alkaline aqueous solution or a copper ammonium solution, and the solution is filtered through a Teflon membrane filter or ultrafiltration membrane,
The polymer fine particles are separated and dried to obtain the weight, and the content rate per fiber weight is obtained. (3) Wet strength: The fiber sample is dipped in water at room temperature for 2 minutes, measured in a wet state with a serimeter at a pulling speed of 20 cm / 24 seconds, and the final strength value is divided by the weight fineness.

The various dyeing fastnesses are obtained by the following methods. I. Fastness to washing; JIS L0844-1986 (A-2 method) (The attached white cloth uses cotton and nylon) b. Fastness to dry cleaning; JIS L0860-1974 (The attached white cloth uses cotton and nylon) c. Sublimation fastness; JIS L0850-1975 (method B-2) (however, hot pressing temperature is 160 ° C. and time is 6
0 seconds and the attached white cloth uses polyester) d. Light fastness to carbon arc lamps; JIS L0842-1988 (exposure method adopts third exposure method)

Examples 1 to 5 and Comparative Examples 1 to 3 Viscose (cellulose concentration 8.
After adding and mixing a concentrated alkaline solution of 350 g / l to 0% and an alkali concentration of 6%, styrene / acrylic polymer fine particles (HP91 manufactured by Rohm and Haas: average particle size 1
μm) 27.5% aqueous dispersion is added slowly, 1 min / min.
The mixture was stirred and mixed using a high-speed stirrer at 000 rpm, and the fine particles were adjusted to have a ratio of addition of cellulose to 20% and an alkali concentration of 7.0%. Then, this stock solution was coagulated and regenerated from a spinneret of 0.07 mm × 40 holes (H ₂ SO ₄ 155 g / l,
ZnSO ₄ 22 g / l, Na ₂ SO ₄ 250 g / l,
It was spun at a discharge rate of 6.8 cc / min to a bath temperature of 60 ° C., drawn at a draw ratio of 20% by a conventionally known continuous spinning device at a spinning speed of 90 m / min, then scoured, dried and wound. The obtained yarn has a fineness of 75 denier and a dry strength of 1.
It was 60 g / d and the wet strength was 0.67 g / d. When the tubular knitted fabric of the obtained filament was dyed under standard dyeing conditions, the disperse dye dyeing ratio was 85.1%.

Then, using a polymer of polyethylene terephthalate, it was spun and stretched by a conventional method at 75 dr / 24.
f polyester filament (hereinafter abbreviated as PES) of f and the regenerated cellulose filament 75dr / 40f
And were interlaced (yarn speed 300 m / min, air pressure 2 kg / cm ² ) to obtain a composite mixed yarn. This composite mixed yarn was S twisted and the yarn twisted at 300 times / m was used as a warp and a weft to be woven in a flat design. After scouring, desizing, and presetting this greige machine, the PES / regenerated cellulose mixed fabric is dipped in the above dyeing solution, and then squeezed to a predetermined dyeing solution content (%) shown in Table 1, High-pressure steaming or normal-pressure steaming was performed for 20 minutes in saturated steam at the temperature shown in. The polyester dye used here had a disperse dye dyeing ratio of 82.1% under the standard dyeing conditions.

After releasing the yarn from the woven fabric of the dyed products and further untwisting, the polyester filaments and the regenerated cellulose fibers were separated, and each dyed product having a constant weight was subjected to Soxhlet extraction using a 57% pyridine aqueous solution. It was The extract was diluted to a predetermined concentration with a 57% aqueous pyridine solution, the absorbance at the maximum absorption wavelength of the diluted solution was measured with a spectrophotometer, and the dyeing amount was obtained from another calibration curve to obtain regenerated cellulose. The dyeing ratio A / B between the fiber and the polyester fiber was calculated, and the difference in shade in the dyed product was evaluated by visual evaluation for the same color property between the fibers constituting the woven fabric. And about tear strength of dyed fabric J
The vertical direction was measured by the pendulum method according to IS-L-1096 to evaluate the tear strength during dyeing.

[0035]

[Table 1]

When the dyeing liquor content, the saturated vapor temperature and the A / B value of the dyeing ratio defined in the present invention are applied within the ranges, a dyed product excellent in homogeneity and tear strength can be obtained. I understand. The various dyeing fastnesses of the woven fabrics of the present invention were as follows. Washing fastness (discoloration) Grade 5 Dry cleaning fastness (discoloration) Grade 5 Sublimation fastness (discoloration) Grade 5 Lightfastness (discoloration) Grade 4

Examples 6 to 7 and Comparative Examples 4 to 5 Viscose (cellulose concentration 8
%, An alkali concentration of 6%) and a predetermined amount of 350 g / l of a concentrated alkali solution are added and mixed, and then an aqueous dispersion of styrene / acrylic polymer particles (OP62 manufactured by Rohm and Haas: average particle size 0.45 μm) is added. Add gradually, 1 per minute
Stirring and mixing using a high-speed stirrer of 000 rpm, and the addition ratio of fine particles to cellulose is 5%, 15%, 30%, 50%
And alkali concentration was adjusted to 7.0%, and degassing was allowed to stand for one day and night to obtain a spinning dope.

Then, these stock solutions were added to 0.07 mm × 4.
Coagulation regeneration bath (H ₂ SO ₄ 15
5 g / l, ZnSO ₄ 22 g / l, Na ₂ SO ₄ 2
50 g / l, bath temperature 60 ° C.) with a discharge rate of 6.9 cc / min, spun at a spinning speed of 90 m / min with a conventionally known continuous spinning device at a draw ratio of about 20%, and then scouring and drying. I wound up. 4 types of yarn obtained (75d / 40
The dry strength of f) is 1.55 g in order from the low addition rate.
/ D, 1.50 g / d, 1.41 g / d, 1.25 g /
d, wet strength 0.71 g / d, 0.63 g / d,
It was 0.51 g / d and 0.45 g / d. Further, the disperse dye dyeing ratio of these yarns under the standard dyeing conditions is 46.9%, 85.2%, 89.
It was 7% and 97.8%.

Then, the same polyester filaments (75d / 24f) used in Example 1 and the above regenerated cellulose filaments (75d / 40f) were interlaced and mixed (yarn speed 300 m / min, air pressure 2 kg / cm
² ) A composite mixed yarn was obtained. These composite mixed yarns are S twisted, 3
Each of the yarns twisted at 00 times / m was used as a warp and a weft and woven in a flat design. After scouring, desizing, and presetting these greige, each of these PES / regenerated cellulose mixed fabrics was dipped in the above dyeing liquor, and the dyeing liquor content was reduced to 90% for batch up. Immediately thereafter, the mixture was put into an airflow dyeing finishing machine and dyeing was carried out for 20 minutes in a circulating airflow of saturated steam at 130 ° C. The dyeing ratio A / B between the regenerated cellulose fiber and the polyester fiber was evaluated for these dyed products by the same method as in Example 1.

[0040]

[Table 2]

It can be seen that a dyed product excellent in the same color property and tear strength can be obtained by carrying out within the range of the content of the polymer fine particles specified in the present invention.

The various dyeing fastnesses of the woven fabrics of the present invention were as follows. Washing fastness (discoloration) Grade 5 Dry cleaning fastness (discoloration) Grade 5 Sublimation fastness (discoloration) Grade 5 Lightfastness (discoloration) Grade 4

Example 8, Comparative Examples 6 to 8 Viscose prepared by a conventional method (cellulose concentration: 8.
3% of polyester fine powder having an average particle size of 4 μm, which is made of polyethylene terephthalate copolymerized with 10 mol% of isophthalic acid after adding and mixing 260 g / l of an alkali solution of sodium hydroxide to 0% and an alkali concentration of 6%).
0% aqueous dispersion was gradually added, and the mixture was stirred and mixed using a high-speed stirrer at 980 rpm, so that the addition ratio of fine powder to cellulose was 20% and 5%, and the alkali concentration was 7.0%. Each was adjusted and vacuum defoamed for 2 hours to obtain a spinning dope.

Then, this stock solution was added to 0.07 mm × 40.
From the spinneret of the hole to the coagulation regeneration bath (H ₂ SO ₄ ; 155
g / l, ZnSO ₄ ; 22 g / l, Na ₂ SO ₄ ; 25
0 g / l, bath temperature 60 ° C.) with a discharge rate of 9.35 cc / min, spun at a spinning speed of 100 m / min with a conventionally known continuous spinning device at a draw ratio of 18%, then scouring, drying and winding. I took it. Two types of yarn obtained (103d / 4
The dry strength of 0f) is 1.38 g / when the addition rate is 20%.
d, the addition rate of 5% is 1.48 g / d, the wet strength is 20%, the addition rate is 0.56 g / d, the addition rate is 5%.
Was 0.67 g / d. The dyeing rate of disperse dyes of these yarns under the standard dyeing condition is 20%
The content was 78%, and the content of 5% was 46%.

Then, the same polyester filaments (75d / 24f) used in Example 1 and the above regenerated cellulose filaments (103d / 40f) were interlaced and mixed (yarn speed 300 m / min, air pressure 2 kg / c
m ² ) Two types of composite mixed yarn were obtained. These composite mixed yarns were S twisted, and yarns twisted at 300 times / m were woven in a flat design as warp yarns and weft yarns. These fabrics were scoured, desizing, preset, printed with the color paste shown below, dried at 110 ° C for 3 minutes, and then subjected to high-pressure steaming for 40 minutes in saturated steam at the temperature shown in Table 3. And atmospheric pressure steaming, high temperature steaming using superheated steam for 7 minutes, and the like. By the drying treatment, the water in the color paste was almost removed.

[Color paste composition] Original paste: Sunprint AFP (manufactured by Sansho Co., Ltd.) 20% 550 parts (100% owp) Dye: Sumikaron Brill Red SE-2BF 50 parts (5% owf) Tartaric acid (50% ) 5 parts Sodium chlorate 3 parts Water 392 parts

Next, washing with water and reduction washing (NaOH 1 g /
1, Na ₂ S ₂ O ₄ 1 g / l, amylazine (Daiichi Kogyo Seiyaku Co., Ltd.) 1 g / l, 70 ° C. × 20 minutes) and dried, and then the yarn is released from the printed portion of these woven fabrics. After untwisting, after separating the polyester filament and the regenerated cellulose, the dyeing amount of each is measured by the same method as in Example 1, and the dyeing ratio A / B of each regenerated cellulose fiber and the polyester fiber is measured. The density difference in the dyed product was evaluated by visual evaluation for the homogeneity between the fibers constituting the woven fabric. The various dyeing fastnesses of the woven fabrics of the present invention and comparative examples were as follows. Example Comparative Example Comparative Example Comparative Example 8 6 7 8 Washing fastness (discoloration) 5th grade 5th grade 4th grade 5th grade Dry cleaning fastness (discoloration) 5th grade 5th grade 4th grade 5 Sublimation fastness (discoloration) ) 5th grade 5th grade 5th grade 5th grade Lightfastness (discoloration) 5th grade 3rd grade 2nd grade 3rd grade

[0048]

[Table 3]

Claims (3)

[Claims] 1. When dyeing a fiber product containing regenerated cellulose fibers and polyester fibers containing 10 to 40% by weight of polymer fine particles that can be dyed with a disperse dye with a disperse dye, the amount of water contained in the fiber product. Is 100% to 1% with respect to the fiber weight
A method for dyeing a textile product, which comprises heat-treating with saturated steam at 40 ° C. 2. When dyeing a fiber product containing regenerated cellulose fibers and polyester fibers containing 10 to 40% by weight of polymer fine particles which can be dyed with a disperse dye with the disperse dye, the water content of the dyeing solution containing the disperse dye. A method for dyeing a textile product, which comprises heating the textile product with saturated steam at 100 ° C. to 140 ° C. in a state where the dyeing solution is applied to the textile product in an amount of 30 to 100% based on the weight of the fiber. 3. When dyeing a fiber product containing regenerated cellulose fibers and polyester fibers containing 10 to 40% by weight of polymer fine particles which can be dyed with a disperse dye with a disperse dye, a color paste containing a disperse dye is used. A method for dyeing a textile product, which comprises heating the product with saturated steam at 100 ° C to 140 ° C after printing the product.