WO2002020895A1

WO2002020895A1 - Method for boiling-off of blended fabric from polyamide fiber and polyurethane fiber, method for producing dyed blended fabric and dyed blended fabric

Info

Publication number: WO2002020895A1
Application number: PCT/JP2001/007602
Authority: WO
Inventors: Yousuke Tanabe; Yoshinori Hosoda; Shinichi Ohiwa; Takasaburou Isshiki
Original assignee: Toray Industries, Inc.; Du Pont-Toray Company, Ltd.
Priority date: 2000-09-04
Filing date: 2001-09-03
Publication date: 2002-03-14
Also published as: CN1394248A; AU2001282608A1; US20030024053A1; KR20020059671A

Abstract

A method for boiling-off of a blended fabric from polyamide fibers and polyurethane fibers, characterized in that soft water is used as the water for treatment and said water for treatment contains a sequestering agent. The method allows the production of a blended fabric from polyamide fibers and polyurethane fibers which has no dyeing specks and is excellent in the uniformity of dyeing.

Description

TECHNICAL FIELD The present invention relates to a method for refining a mixed fabric of polyamide fiber and polyurethane fiber, a method for producing a mixed dyed fabric, a method for producing a fabric, and a mixed dyed fabric.

The present invention relates to a method for refining a mixed fabric of a polyamide fiber and a polyurethane fiber, a method for producing a mixed dyed fabric, and a mixed dyed fabric.

More specifically, a method of scouring a mixed fabric of polyamide fiber and polyurethane fiber, which is capable of effectively removing oil and removing stains due to oil stains and the like, and a method of manufacturing a mixed dyed fabric and mixing the same. It relates to a dyed fabric. Background art

Polyurethane fiber has many excellent properties such as comfortable stretch function, shape retention, fit, moldability, unique texture, and anti-sealing properties, so it can be used for innerwear, pantyhose, swimwear, and leotard. It is used in many fields, such as outerwear and outerwear.

For applications that directly touch the skin, such as innerwear, pantyhose, swimwear, and leotard, a soft and soft touch is required. Therefore, the fabric is mainly used in the form of a knitted fabric. Polyamide fibers such as nylon fibers are often used as the mixed material here.

In outerwear applications, polyurethane fibers are often used as knitted fabrics, in addition to polyamide fibers, mixed with polyester fibers and natural fibers such as wool and cotton. .

Polyurethane fibers are also used as non-woven fabrics with elasticity mixed with non-woven fabrics. In particular, in applications such as innerwear, pantyhose, swimwear, and leotards, stretchability and fit are required, and the mix ratio of polyurethane fiber is increasing. A problem with materials containing polyurethane fibers is that they tend to deposit oil. Diversification of mixed materials, increase in knitting structure, and knitting As the speed increases, the stain on the knitted fabric by the oil used in the knitting machine tends to increase. Furthermore, the incorporation of metal components such as iron and copper into the oil used in knitting needles of knitting machines and pipes of lubricating oil of knitting machines makes oil removal in the scouring process more difficult.

Also, in the dyeing process of a mixed fabric of polyamide fiber and polyurethane fiber, acid dyes generally used for dyeing polyamide fibers are more dye-transferable than disperse dyes generally used for polyester fibers and the like. If the ω foreign matter such as oil stains is not sufficiently removed in the scouring process before dyeing, it may cause defective products such as spots and stains.

Conventionally, non-ionic surfactants, anionic surfactants, amphoteric surfactants, and the like have been generally used for scouring mixed fabrics of polyamide fibers and polyurethane fibers. In addition, a method of adding an alkali such as soda ash and caseid to a liquid containing a surfactant to enhance the scouring effect is generally performed. However, with these methods, oil stains could not be sufficiently removed in the scouring process, and troubles such as spots of stain and oil bleeding occurred.

Therefore, as a method for refining a mixed fabric of polyurethane fibers having a large amount of adhered oil, Japanese Patent Application Laid-Open No. H08-82562 discloses a high concentration of a nonionic surfactant to which ethylene oxide is added. A method is disclosed in which a pretreatment is performed at a low bath ratio using a processing solution, and then scouring is performed at a high bath ratio using the same processing solution having a low concentration. However, although this method is excellent for removing oil, it has little effect on removing dirt including metals and the like, and has little effect on preventing dye spots.

It is also known to add a scouring agent to the dyeing liquor by taking measures to correct problems such as spots and oily spots in the dyeing process, and to use acid dyes with excellent levelness. The effect was small, and sometimes the dyeing fastness was reduced. DISCLOSURE OF THE INVENTION ''

An object of the present invention is to provide a method for refining a mixed fabric of a polyamide fiber and a polyurethane fiber, a method for producing a mixed dyed fabric, and a mixed dyed fabric which can prevent the occurrence of spots of stain, oil bleeding, etc. due to oil stains and the like. It is in.

As a result of intensive studies, the present inventors have solved the above-mentioned problems. That is, the present invention provides a polyamide fiber and a polyurethane, which are characterized in that when scouring a mixed fabric of a polyamide fiber and a polyurethane fiber, soft water is used as a treatment water and a sequestering agent is contained in the treatment water. This is a scouring method for fabrics mixed with fibers.

Further, in performing continuous scouring of a mixed fabric of a polyamide fiber and a polyurethane fiber, an unreacted sequestering agent is left in the treatment water after the scouring treatment, and the polyamide fiber is characterized in that: This is a method for refining a mixed fabric with polyurethane fibers.

After scouring the mixed fabric of polyamide fiber and polyurethane fiber, the temperature was reduced.

This is a method for producing a mixed dyed fabric of a polyamide fiber and a polyurethane fiber, which is preset at a temperature of 190 ° C. or less and a time of 60 seconds or less, followed by dyeing and finishing.

Furthermore, when dyeing a mixed fabric of polyamide fiber and polyurethane fiber with an acid dye, soft water is used as water for the dyeing solution, and a metal ion blocking agent is contained in the dyeing solution. This is a method for producing a mixed dyed fabric of a polyamide fiber and a polyurethane fiber. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described in detail.

The polyamide fiber used in the present invention can be used without limitation as long as it is a fiber composed of a polyamide component. Preferably, the fiber is made of polyamide 6 (nylon 6) or polyamide 66 (nylon 66). In addition, a fiber comprising a polyamide obtained by copolymerizing a polyamide 6 component and a polyamide 66 component and a polyamide obtained by copolymerizing other polyamide components can also be used.

On the other hand, as the polyurethane fibers used in the present invention, polyurethane fibers obtained by threading a polyurethane polymer obtained by reacting three components of a polymer diol, an isocyanate mainly composed of an organic diisocyanate, and a polyfunctional active hydrogen compound are preferably used. .

Here, examples of the polymer diol include polytetramethylene glycol and polyester. In addition to polyether daricols such as ethylene and propylene ether glycol, at least one of daricols such as ethylene glycol, 1,6-hexanediol, 1,4-butanediol, neopentyldaricol and adipic acid, Polyester glycols obtained by reacting at least one of dicarboxylic acids such as suberic acid, azelaic acid, sebacic acid, J3-methyladipic acid, and isophthalic acid; polyprolactone glycol; and polyhexamethylene dicarbonate. These polymer diols can be used alone or as a mixture or copolymer of two or more thereof.

Further, the organic diisocyanate constituting the polyurethane fiber used in the present invention includes 4,4′-diphenylmethane isocyanate, 1,5-naphthalenediocyanate, 1,4-phenylenediocyanate, One or more organic diisocyanates such as 4-tolylene diisocyanate, hexamethylene diisocyanate, 1,4-cyclohexanediisocyanate, 4,4'-dicyclohexylmethane diisocyanate, isophorone diisocyanate A mixture can be exemplified. Further, a small amount of triisocyanate may be used in combination.

The polyfunctional active hydrogen compounds include ethylenediamine, 1,2-propylenediamine, hexamethylenediamine, xylylenediamine, 4,4'-diphenylmethanediamine, hydrazine, 1,4-diaminobiperazine. Examples thereof include, but are not limited to, one kind of ethylene glycol, 1,4-butanediol, 1,6-hexanediol, and water, or a mixture of two or more kinds thereof. A small amount of a reaction terminator such as monoamine or monoalcohol may be used in combination with these compounds.

The polyurethane fiber used in the present invention may further contain an antioxidant such as 2,6-ditetrabutylparacresol and phosphite, a light or ultraviolet absorber such as hydroxybenzophenone or hydroxybenzothiazole, Yellow deterioration inhibitors such as 1,1-dialkyl-substituted semicarbazides and dithiol-rubbamates, and white pigments such as titanium oxide and zinc oxide may be appropriately added.

In the present invention, the above-mentioned polyurethane is a polyurethane solution. As the solvent for dissolving the polyurethane, any solvent may be used as long as it is inert to the polyurethane. However, it is preferable to use a solvent having high solubility of the polyurethane, for example, N, N-dimethylacetamide, dimethylformamide, dimethylsulfoxide, vinylpyrrolidone and the like are preferably used. The concentration of the polyurethane is not particularly limited, but is usually preferably from 25% by weight to 80% by weight. More preferably, the content is 35% by weight or more and 55% by weight or less. If the amount is less than 25% by weight, the amount of heat required for evaporating the solvent increases, and spinning tends to be difficult. On the other hand, if it exceeds 80% by weight, the stability of the solution tends to decrease, and the spinnability tends to deteriorate. If the degree of polymerization of the polyurethane is reduced to improve the stability of the solution, the yarn quality of the polyurethane fiber tends to decrease.

In the present invention, polyurethane fibers can be obtained by dry, wet, or melt spinning a solution containing polyurethane.

The fineness of the polyurethane fiber used in the present invention can be appropriately selected depending on the application, but is usually preferably in the range of 5 to 100 dtex, and more preferably in the range of 10 to 80 dtex.

Further, it is preferable that the polyurethane fiber is knitted by using a bare fiber and knitting with a polyamide fiber. In a preferred embodiment, the polyurethane fiber is knitted and woven as a processed yarn entangled with polyamide fiber or a processed yarn force-barred with polyamide fiber. Examples of such processed yarns include an air entangled yarn (ACY) in which polyamide fibers and polyurethane fibers are simultaneously interlaced using an air processing machine, and a single yarn in which a polyamide fiber is force-barred to a polyurethane fiber using a covering machine. Covered yarn (SCY) and double covered yarn (DCY) are preferably used.

The mixed fabric of polyamide fiber and polyurethane fiber in the present invention may be a knitted fabric such as a warp knit such as tricot or Russell, a circular knit or a weft knit, or a woven or nonwoven fabric. It is preferably a knitted fabric, and more preferably a warp knit. In particular, since the tricot has many take-up rolls, the opportunity to stain the knitted fabric with oil used in the knitting machine increases, and thus the application of the present invention is more preferable.

In the present invention, the mixing ratio of the polyamide fiber and the polyurethane fiber is not particularly limited, but the ratio of the polyurethane fiber in the mixed fabric is preferably 1 to 50% by weight. The effect of the present invention is applied to a mixed fabric of polyamide fiber and polyurethane fiber. Other synthetic fibers, natural fibers and the like may be mixed as long as they are not impaired.

The scouring of the mixed fabric in the present invention is preferably a continuous system in which the fabric is continuously fed into the treatment water, rather than a batch system in which the treatment water is used up once, from the viewpoint of efficiency.

The scouring device used is preferably a continuous scouring device such as an open soaper or a continuous relaxer. In the present invention, the scouring treatment is preferably performed in a plurality of continuous steps from the viewpoint of preventing scouring unevenness. That is, it is preferable that the continuous scouring apparatus includes a plurality of processing tanks. The number of processing tanks is preferably 2 or more and 5 or less from the viewpoint of efficient capital investment and processing efficiency.

In the present invention, the scouring conditions are not particularly limited, but it is preferable that the relaxation treatment is also performed, and the treatment temperature at the end of the scouring treatment is higher than the treatment temperature at the start of the scouring treatment in consideration of the relaxation treatment. It is preferably scoured.

For example, in the continuous scouring apparatus, when the mixed fabric is sent to the first tank, the second tank, and the third tank in order to be scoured, the temperature in the first tank is 50, and the temperature in the second tank is It is a preferable embodiment that the processing temperature is set to 60 ° C. and the temperature in the third tank is set to 7 Ot in order.

The scouring treatment temperature is preferably 40 ° C. or more and 98 or less, and more preferably 60 ° C. or more from the viewpoint of improving the scouring effect.

In the scouring treatment of the present invention, it is preferable to use soft water as the treatment water. For example, if hard water containing metal ions such as calcium and magnesium is used, the scouring effect is reduced, or the metal ion is acidified in the dyeing process. A complex may be formed with the dye, resulting in reduced dyeing properties and uneven dyeing. The total hardness indicating the concentration of metal ions in water is preferably 40 ppm or less, more preferably 30 ppm or less. In the scouring treatment in the present invention, it is necessary that the treatment water contains a sequestering agent.

In the continuous scouring treatment, it is necessary that unreacted metal ion sequestering agents remain in the treatment water after the scouring treatment. The residual unreacted sequestering agent is preferably at least 1 Ppm in the water for treatment, more preferably at least 30 ppm. The amount of sequestering agent to be added is usually an amount that sequesters metal ions such as calcium and magnesium in the water for treatment and leaves unreacted sequestering agent at 1 ppm or more. Therefore, the amount of sequestering agent added to the water for scouring treatment is usually 0.1 lg ZL or more. Furthermore, during the scouring of the mixed fabric of polyamide fiber and polyurethane fiber, the metal ion sequestering agent may be consumed due to oily dirt or the like containing metal adhering to the mixed fabric. It is preferred to add a sequestering agent of To add the sequestering agent without excess or deficiency, the amount of the sequestering agent in the water for treatment is measured continuously or intermittently so that the unreacted sequestering agent always contains 1 Ppm or more. A method of adjusting the amount of the sequestering agent to be added is also preferably used.

In the present invention, the sequestering agent is preferably added at least in the first step of the scouring treatment, from the viewpoint of increasing the contact time between the mixed fabric and the treatment water and increasing the scouring effect. Specifically, for example, when using a continuous scouring device comprising a plurality of tanks as described above, it is preferable to add a metal ion sealing agent to at least the first tank in which the mixed fabric is first scoured.

The type of sequestering agent used in the present invention is not particularly limited, but as the inorganic sequestering agent, pyrophosphoric acid, tripolyphosphoric acid, trimetaphosphoric acid, tetrametaphosphoric acid and the like are preferably used. In addition, ethylenediaminetetraacetic acid, hydroxyethylethylenediaminetriacetic acid, dihydroxysethylethylenediaminediacetic acid, 1.3 propanediaminetetraacetic acid, dimethylenetriaminepentaacetic acid, and triethylenetetramine with high sequestering ability Organic sequestering agents having nitrogen such as hexaacetic acid, two-triacetate triacetic acid, and hydroxyshityliminoniacetic acid are more preferably used, and particularly, ethylenediaminetetraacetic acid and Z or diethylenetriaminepentaacetic acid are preferably used. Can be

The addition of polyphosphoric acid as a dispersant in addition to the sequestering agent in the water for treatment improves the dispersibility of the resulting metal chelate and prevents the metal chelate from re-adhering to the mixed fabric. It is preferable from the viewpoint of preventing precipitation of metal chelates.

In addition, in addition to the sequestering agent and the dispersing agent, the treatment water used in the present invention usually includes It may contain a nonionic surfactant, an anionic surfactant, or an amphoteric surfactant used in the refining, and may contain an alkaline agent such as caustic soda and soda ash. It is preferable from the viewpoint of improving the scouring efficiency that the treatment water is adjusted to an appropriate pH depending on the kind of the sequestering agent to be used, the kind of the stain component adhering to the mixed fabric, and the like.

Next, a method for producing the mixed dyed fabric of the polyamide fiber and the polyurethane fiber of the present invention will be described.

In the method for producing the mixed dyed fabric of the present invention, after the scouring treatment of the mixed fabric of the polyamide fiber and the polyurethane fiber, the temperature is set to 190 ° C or less, and the time is preset to 60 seconds or less. Thereafter, dyeing and finishing are preferable. Preferably, such a preset is dry heat. The preset is 1 87. C or less, and more preferably within 45 seconds. When the preset temperature exceeds 190 ° C or the preset time exceeds 60 seconds, the thermal oxidation of the polyamide fiber progresses, and the amino terminal groups, which are the dyeing seats of the acid dye, decrease, and the dye is leveled. May deteriorate.

The tentering rate of the preset is preferably 40% or less, more preferably 30% or less, with respect to the width of the cloth after scouring.

The elongation of the preset is preferably 5% or less, more preferably 0% or less, with respect to the length of the cloth after scouring. Here, the elongation rate of the preset refers to the elongation rate in the fabric length direction at the time of presetting, and the term "within 5% of the length of the cloth after scouring" means that the elongation rate is within 5%. Means

According to the method of the present invention, it is possible to prevent the occurrence of spots or oil spots due to oil stains containing metal.

Furthermore, as a result of intensive studies, the present inventors have found that dyeing conditions as well as scouring and presetting conditions affect the quality of the fabric.

That is, in the method for producing a mixed dyeing fabric of the present invention, when dyeing a mixed fabric of polyamide fiber and polyurethane fiber with an acid dye, soft water is used as water for the dyeing solution; It is preferable that a sequestering agent be contained in the mixture.

In the present invention, the soft water refers to water having a total hardness indicating a metal ion concentration in the water of 50 ppm or less, and preferably 40 ppm or less. Also contained in the staining solution The sequestering agent to be used is preferably the same as that used in the scouring treatment, but may be different.

The amount of the sequestering agent to be added to the staining solution can be appropriately selected depending on the level of oil and stain remaining after scouring or presetting, but it is usually preferable to add 0.1 gZL or more.

Here, the dyeing solution may contain a leveling agent, a pH adjuster, and the like used in ordinary dyeing, in addition to the sequestering agent.

The dyeing temperature is not particularly limited, but is usually preferably in the range of 70 ° C to 120 ° C, and more preferably 8 Ot or more from the viewpoint of dyeing properties.

The scouring and the presetting conditions to which the sequestering agent of the present invention is added, and the dyeing to which the sequestering agent is added may be applied alone or in combination. It can also be applied in combination with the prior art. A method of appropriately selecting the combination depending on the degree of contamination of the mixed fabric is preferably used. Example

Hereinafter, the present invention will be described in detail with reference to examples. The levelness was determined by the following method.

A. Leveling

Nylon 6 (44 decitex 34 filament, type 2694: Nylon 6 manufactured by Toray Industries, Inc.) on the front and polyether polyurethane fiber (44 decitex, T-152B: manufactured by Toray DuPont, registered trademark) Using "LYCRA"), a 2-way tricot was knitted with a Myya tricot knitting machine (type HKS 2, 180 "x 32G), which is used in knitting machines as a typical example of oil stains. After collecting the pattern wheel oil, partially adhering it to the two-way tricot with a cotton swab, performing scouring and presetting including the method of the present invention, and using kayano 1 milling terquoiseblue 3G (manufactured by Honhon Kayaku Co., Ltd.) (Acid dye) 0.5% ow f at 98 ° C for 30 minutes, and the degree of dyeing spot of the dyed product was visually judged. And Example 1

Soft water with a total hardness of 10 ppm was used as water for the scouring treatment. Sunmol BL 650 (a nonionic surfactant manufactured by Nikka Chemical Co., Ltd.) S gZL, soda ash 0. S gZL achromer DH 700 (Teikoku Chemical An ethylenediaminetetraacetic acid-based metal ion sequestering agent manufactured by Sangyo Co., Ltd.) A scouring solution to which 3 g ZL was added was prepared, and treated at 0.90 for 10 minutes. Subsequently, the cells were pre-set at 190 for 45 seconds and then stained.

The resulting dyed product was completely fc-free of oil stains, had no spots, and had excellent levelness. Example 2

Soft water with a total hardness of 10 ppm was used as water for the scouring treatment. Sunmole BL 650 (a nonionic surfactant manufactured by Nikka Chemical Co., Ltd.) 2 gZL, soda ash 0.5 g / L, Crewat DP 80 ( Diethylenetriaminepentaacetic acid sequestering agent manufactured by Teikoku Chemical Industry Co., Ltd.) A scouring solution containing 3 g ZL was prepared and treated at 90 ° C for 10 minutes. C Then, after presetting at 190 at 45 seconds, staining was performed. did.

The dyed product obtained was completely free of oil stains, had no spots, and had excellent levelness. C Comparative Example 1

Hard water with a total hardness of 100 ppm was used as water for the scouring treatment, and Sunmol BL650 (a nonionic surfactant manufactured by Nikka Chemical Co., Ltd.) 2 g / L, soda ash 0.5 g / L, Crewat DP 80 (diethylene triamine pentaacetic acid sequestering agent manufactured by Teikoku Chemical Industry Co., Ltd.) A scouring solution containing 3 g ZL was prepared, treated with 9 Ot for 10 minutes. After presetting for 2 seconds, staining was performed.

Since the preset time was long without using soft water, the obtained dyed product had oil stains remaining, the oil stains were not dyed, and spots were marked and lacked level dyeing.

Comparative Example 2

A scouring liquid containing soft water with a total hardness of 10 ppm as water for scouring treatment and adding 2 g / L of Sunmol BL 650 (Non-ionic surfactant manufactured by Nikka Chemical Co., Ltd.) and 0.5 g ZL of soda ash Was treated at 90 ° C. for 10 minutes. Subsequently, the cells were preset at 193 for 45 seconds and then stained.

Since no sequestering agent was used and the preset temperature was high, the dyeing obtained was The product had oil stains remaining, the oil stains were not dyed, and spots were conspicuous and lacked levelness.

Example 3

As processing water used for scouring, Sunmol BL650 (Nionic surfactant, nonionic surfactant) 2 g / L, Achromar DH700 (Ethylenediaminetetraacetic acid, Teikoku Chemical Industry Co., Ltd.) (A sequestering agent) was added at 2000 ppm. The scouring was performed using an open soaper type continuous scouring device consisting of two treatment tanks, setting the first tank at 60 ° C and the second tank at 90 ° C, and scouring for 30 seconds. After scouring treatment, they were pre-set at 190 ^ for 30 seconds using a dry heat setting machine of Pinten Yuichi type, and then stained. The concentration of the unreacted sequestering agent in the second tank after the scouring treatment was 250 ppm. .

The resulting dyed product was completely free of oil stains, had no spots, and had excellent levelness. Example 4

As processing water used for scouring, Sunmole BL650 (Nionic surfactant, non-ionic surfactant) 2 g / L, Crewat DP 80 (Detylenetriaminepentaacetic acid, Teikoku Chemical Sangyo Co., Ltd.) Water used was added to the solution (sequestering agent) at 1000 ppm. The scouring was performed using an open soaper type continuous scouring device consisting of 2 'treatment tanks, setting the first tank at 60 and the second tank at 90 ° C, and scouring for 30 seconds. After the scouring treatment, it was pre-set at 190 ° C for 30 seconds using a Pinten Yuichi dry heat setting machine and then stained. The unreacted sequestering agent concentration in the second tank after the scouring treatment was 132 ppm.

The resulting dyed product was completely free of oil stains, had no spots, and had excellent levelness. Example 5

As processing water used for scouring, Sunmol BL650 (Nionic surfactant, non-ionic surfactant) 2 gZL, Crewat DP 80 (Teijen Triamine pentaacetic acid metal ion, Teikoku Chemical Industry Co., Ltd.) (A blocking agent) was used at 300 ppm. The scouring was performed using an open soaper type continuous scouring device consisting of two treatment tanks, setting the first tank at 60 ° C and the second tank at 90 ° C, and scouring for 30 seconds. After scouring treatment, pre-set at 190 ° C for 30 seconds using a pin tenter type dry heat setting machine. Stained. The concentration of unreacted sequestering agent in the second tank after the scouring treatment was 3 ppm.

The resulting dyed product was completely free of oil stains, had no spots, and had excellent levelness. Comparative Example 3

As the processing water used for scouring, Sunmole BL650 (Nionic surfactant manufactured by Nika Chemicals Co., Ltd.) 2 gZL, Crewat DP 80 (Detylenetriaminepentaacetic acid sequestered by Teikoku Chemical Industry Co., Ltd.) Water) to which 30 ppm was added. The scouring was performed using an open-sawper-type continuous scouring device consisting of two treatment tanks, setting the first tank at 60 and the second tank at 90 ° C, and scouring for 30 seconds. After the scouring treatment, a dry heat setting machine of a pin tenter type was used, and pre-set at 19. for 90 seconds, and then dyed. The unreacted sequestering agent concentration in the first and second tanks after the scouring treatment was 0 ppm.

In this comparative example having a long preset time with no sequestering agent remaining, the obtained dyed product had oil stains remaining, the oil stains were not dyed, and spots were conspicuous and poor in levelness.

Comparative Example 4

As treatment water used for scouring, water added with 2 gZL of Sunmol BL650 (Non-ionic surfactant, manufactured by Nika Chemical Co., Ltd.) was used. The scouring was performed using an open soaper type continuous scouring device consisting of two treatment tanks, setting the first tank at 60 ° C and the second tank at 90 ° C, and scouring for 30 seconds. After scouring, it was pre-set at 192 ° C for 30 seconds using a pin tenter type dry heat setting machine, and then stained. The unreacted sequestering agent concentration in the first tank and the second tank after the scouring treatment was 0 ppm.

In this comparative example having a high preset temperature without adding a sequestering agent, the obtained dyed product had oil stains remaining, the oil stain portions were not dyed, and spots were conspicuous and poor in levelness.

Example 6

As treatment water used for scouring, water added with 2'gZL of Sunmol BL650 (Non-ionic surfactant manufactured by Nika Chemical Co., Ltd.) was used. For refining, use an open soaper type continuous refining device consisting of two processing tanks, with the first tank at 60 and the second tank at 90 ° C. And scoured for 30 seconds. After the scouring treatment, it was pre-set at 190 ° C for 30 seconds using a pin tenter type dry heat setting machine.

Soft water with a total hardness of 10 ppm was used as the dyeing water, and 'kayano 1 milling turquoiselue 3G (acid dye manufactured by Nippon Kayaku Co., Ltd.) 0.5% owf, Newbon SD-2 (Nichika Chemical ( 4% ow f, NC Acid W (pH adjuster, manufactured by Nikka Chemical Co., Ltd.) 0.3 gZL, and Achromar DH700 (Ethylene diamine tetravinegar, manufactured by Teikoku Chemical Industry Co., Ltd.) An acid-based sequestering agent) A staining solution to which 0.3 g ZL was added was prepared, and stained with 9 for 30 minutes.

The resulting dyed product was completely free of oil stains, had no spots, and had excellent levelness. , Example 7

As processing water used for scouring, water added with 2 g / L of Sunmol BL650 (Nion Chemical Co., Ltd. non-ionic surfactant) was used. The scouring was performed using an open soaper type continuous scouring device consisting of two treatment tanks, setting the first tank at 60 ° C and the second tank at 90 ° C, and scouring for 30 seconds. After the scouring treatment, it was pre-set at 190 ° C for 30 seconds using a pin tenter type dry heat setting machine.

Soft water with a total hardness of 10 ppm was used as the dyeing water, and kay a'no 1 milling turquoiselue 3 G (acid dye manufactured by Nippon Kayaku Co., Ltd.) 0.5% owf, Newbon SD-2 (day) 4% ow f, NC Acid W (pH adjuster, manufactured by Nikka Chemical Co., Ltd.) 0.3 g / L, and Crewath DP 80 (Teikoku Chemical Industry Co., Ltd.) A staining solution to which 0.3 g / L was added was prepared and stained with 98 for 30 minutes.

The resulting dyed product was completely free of oil stains, had no spots, and had excellent levelness. As the processing water used in Comparative Example 5 ^s scouring, Saint Maur BL 6 5 0 (Nicca Chemical Co., Ltd. Non-I on surfactant) was used 2 GZL have been added. For the scouring, an open soaper type continuous scouring device consisting of two treatment tanks was used. The first tank was set at 60 ° C and the second tank was set at 90 = C, and scouring was performed for 30 seconds. After scouring, dry heat setting machine of pin tenter type And preset at 190 ° C for 90 seconds.

Hard water having a total hardness of 100 ppm was used as the dyeing water, and kayano 1 milling turquoiseblue 3G (acid dye manufactured by Nippon Kayaku Co., Ltd.) 0.5% owf, Newbon SD-2 (Nichika Chemical Co., Ltd.) ) Anion leveling agent) 4% owf, NC Acid W (Nika Chemical Co., Ltd. pH adjuster) 0.3 g "L" was added to the staining solution, and the mixture was dyed at 98T for 30 minutes.

In this comparative example having a long preset time without adding a sequestering agent, the obtained dyed product had oil stains remaining, the oil stains were not dyed, and spots were conspicuous and lacked level dyeing properties.

Example 8

A scouring liquid to which 2 g ZL of Sunmol BL650 (Nika Chemical Co., Ltd. nonionic surfactant) was added was used and scouring treatment was performed at 90 ° C for 1 minute. Then, using a pin tenter type dry heat setting machine, it was preset at 187 ° C for 45 seconds at a tentating rate of 30% and an over-feed rate of 0%.

Next, kayanolmillingturquoiseblue 3G (acid dye manufactured by Nippon Kayaku Co., Ltd.) 0.5% ow f, New Bonn SD-2 (Nika Chemicals anion leveling agent manufactured by Nichika Chemical Co., Ltd.) 4% ow f , NC Acid W (pH adjuster, manufactured by Nikka Chemical Co., Ltd.), 0.3 gZL was added thereto, and the mixture was stained at 98 ° C. for 30 minutes.

The resulting dyed product was completely free of oil stains, had no spots, and had excellent levelness. Comparative Example 6

As a scouring solution, a solution to which 2 gZL of Sunmol BL650 (Nika Chemical Co., Ltd. nonionic surfactant) was added was used and scouring treatment was performed at 90 ° C. for 1 minute. After that, using a pin tenter type dry heat setting machine, it was preset at 195 ° C for 90 seconds at a tentating rate of 45% and an over-feed rate of 10%.

Next, kayanolmillingturquoiseble 3G (acid dye manufactured by Nippon Kayaku Co., Ltd.) 0.5% ow: f, New Bonn SD-2 (Anika leveling agent manufactured by Nikka Chemical Co., Ltd.) 4% owf NC Acid W (Nika Chemicals Co., Ltd. pH adjuster) 0.3 g / L was added to the staining solution, and the mixture was prepared at 98 ° C. Stained for 30 minutes.

No sequestering agent added, high preset temperature, long preset time In this comparative example, the obtained dyed product has oil stains remaining, oil stains are not stained, and spots are noticeable and leveling is uniform. I was missing.

Example 9

Soft water with a total hardness of 10 ppm was used as scouring water. Sunmol BL650 (Non-ionic chemical surfactant, nonionic surfactant) 2 gZL, soda ash 0.5 g / L, achroma DH7 00 (Ethylenediaminetetraacetic acid-based sequestering agent manufactured by Teikoku Chemical Industry Co., Ltd.) A scouring solution to which 3 g / L was added was prepared and treated with 9 Ot for 10 minutes. Then, using a dry heat setting machine of the Pinten Yuichi type, it was preset at 187 ^ for 45 seconds at a tentering rate of 30% and an overfeed rate of 0%.

Next, kayanolmillingturquoiseblue 3G (acid dye manufactured by Nippon Kayaku Co., Ltd.) 0.5% owf, New Bonn SD-2 (Nikka Chemical Co., Ltd. anion leveling agent) 4% owf, NC A staining solution containing 0.3 g / L of Acid W (a pH adjuster manufactured by Nikka Chemical Co., Ltd.) was prepared and stained at 98 ° C. for 30 minutes.

The resulting dyed product was completely free of oil stains, had no spots, and had excellent levelness. Example 10

As the treatment water used for the scouring, water added with 2 gZL of Sunmole BL650 (Nion Chemical Co., Ltd. non-ionic surfactant) was used. For the scouring, an open soaper type continuous scouring device consisting of two treatment tanks was used, and scouring was performed for 30 seconds with the second tank set at 60 ° C and the second tank set at 90 ° C. After the scouring treatment, it was preset for 45 seconds at 187 ° C using a pin tenter type dry heat setting machine at a tentering rate of 30% and an over-feed rate of 0%.

Subsequently, soft water having a total hardness of 10 ppm was used as the dyeing water, and kayanolmilling turquoise blue 3G (an acid dye manufactured by Kyohonka Co., Ltd.) 0.5% owf, Newbon SD-2 (Nichika Chemical ( 4% owf, NC Acid W (pH adjuster manufactured by Nichika Chemical Co., Ltd.) 0.3 g / L, and Achroma DH700 (manufactured by Teikoku Chemical Industry Co., Ltd.) Ethylene diamine A staining solution to which 0.3 g ZL was added was prepared and stained at 98 ° C. for 30 minutes.

The resulting dyed product was completely free of oil stains, had no spots, and had excellent levelness. Industrial applicability

ADVANTAGE OF THE INVENTION According to this invention, the mixed fabric of the polyamide fiber and the polyurethane fiber which is excellent in the leveling property without dyeing | staining is obtained. INDUSTRIAL APPLICABILITY The mixed fabric of the present invention is suitable for innerwear, panty-stocking, swimwear, leotard, outerwear, and the like, and has extremely high practicality.

Claims

Scope of Claim 1. When scouring a mixed fabric of polyamide fiber and polyurethane fiber, soft water is used as treatment water, and a sequestering agent is contained in the treatment water. A scouring method for a mixed fabric of a polyamide fiber and a polyurethane fiber.

2. Polyamide fiber and polyurethane, characterized in that unreacted sequestering agent 'is left in the treatment water after the scouring treatment during continuous scouring treatment of the mixed fabric of polyamide fiber and polyurethane fiber. Method for scouring fabric mixed with fiber

3. The mixed fabric of polyamide fiber and polyurethane fiber according to claim 2, wherein the scouring treatment is performed in a plurality of steps, and the sequestering agent is added in at least the first step. Scouring method.

4. The mixed fabric of a polyamide fiber and a polyurethane fiber according to claim 1 or 2, wherein the sequestering agent is ethylenediaminetetraacetic acid and / or diethylenetriaminepentaacetic acid. Scouring method.

5. The method for scouring a mixed fabric of a polyamide fiber and a polyurethane fiber according to claim 1 or 2, further comprising a dispersant in the water for treatment.

6. A polyamide characterized by being subjected to scouring treatment of a mixed fabric of polyamide fiber and polyurethane fiber, preset at a temperature of 190 ^ or less and a time of 60 seconds or less, and then dyed and finished. A method for producing a mixed dyed fabric of fibers and urethane fibers.

7. The dyed cloth mixed with polyamide fiber and polyurethane fiber according to claim 6, wherein the tentering rate of the preset is 40% or less with respect to the cloth width after refining. Production method.

8. The production of a dyed fabric mixed with a polyamide fiber and a polyurethane fiber according to claim 6, wherein the elongation of the preset is set to 5% or less with respect to the length of the cloth after scouring. Method.

9. When dyeing a mixed fabric of polyamide fiber and polyurethane fiber with an acid dye, use soft water as the water for the dyeing solution and seal the metal ion in the dyeing solution. What is claimed is: 1. A method for producing a dyed fabric mixed with a polyamide fiber and a polyurethane fiber, which comprises a chain agent.

10. A mixed dyed fabric of a polyamide fiber and a polyurethane fiber produced by the method according to claim 6 or 9. '

11. The mixed dyed fabric of a polyamide fiber and a polyurethane fiber according to claim 10, wherein the mixed dyed fabric is a knitted fabric.

12. The mixed dyed fabric of polyamide fiber and polyurethane fiber according to claim 10, wherein the mixed dyed fabric is warp knitted.