Synthetic fiber fabric

Abstract

To provide a pigment-colored synthetic fiber fabric which is excellent in light resistance and rubbing fastness, has high color development, and has good texture.SOLUTION: A synthetic fiber fabric is composed of synthetic fibers. A polyolefin-based or polyester-based anionic polymer, a pigment containing a cationic dispersant, an anionic fixing agent composed of an aromatic sulfonic acid condensate, and a modified silicone agent selected from dimethyl-modified, epoxy-modified and carboxyl-modified nonionic or cationic silicone agents are adhered to the synthetic fibers.SELECTED DRAWING: None

Description

[Technical Field]

[0001] This invention relates to synthetic fiber fabrics. [Background technology]

[0002] In recent years, fine-denier fabrics have become increasingly popular for applications that people come into direct contact with, such as clothing, furniture, and car seats, due to their pleasant texture. While various fiber materials are used, synthetic fibers, particularly fine-denier polyester, are frequently used because they offer abrasion resistance and easy care, including the ability to be washed with water. When using fine fibers, it is necessary to absorb a larger amount of dye than with ordinary fibers to achieve high color development, but this raises concerns about reduced colorfastness. In particular, lightfastness, which is affected by dye decomposition and sublimation, tends to worsen as the fiber density decreases. Generally, in applications such as automotive seats and outdoor use, lightfastness is improved by using expensive, highly lightfast dyes, but with fine fibers, it is necessary to increase the dye concentration, which is often a cost disadvantage, and the lightfastness is often insufficient. Furthermore, in artificial leather used in car seats and the like, there are problems such as the fact that the high-molecular-weight elastic material contained in the fabric tends to reduce colorfastness, including lightfastness.

[0003] To address issues of lightfastness and other colorfastness problems, coloring techniques using pigments instead of dyes have been developed. Furthermore, coloring techniques using pigments are increasingly being considered from an environmental perspective, as they offer advantages over immersion dyeing methods using dyes in terms of water usage and wastewater, thus reducing environmental impact.

[0004] One pigment-based coloring technique is described in Patent Document 1 below, which involves mixing the pigment into the raw resin beforehand during fiber formation. However, in the case of fine fibers, unless the particle size of the pigment is sufficiently small compared to the fiber diameter, it adversely affects the spinnability and fiber properties. Therefore, the range of pigments that can be applied is limited to a very small number, such as carbon black, resulting in a limited range of color variations. Furthermore, methods such as dispersing pigments in a resin solution and fixing them to the fiber surface have been employed, but these methods have problems such as damaging the texture of the fibers due to the hardening of the resin surface, and reducing abrasion resistance due to the hardening of the surface. In addition, methods of coloring fabrics using printing or inkjet printing have also been employed, but due to the low penetration of pigments into the fabric, when abrasion occurs, uncolored areas are exposed, resulting in significant color changes.

[0005] Furthermore, Patent Document 2 below proposes a method for coloring fibers using a cationic aqueous pigment dispersion in a manner similar to dyeing. Although there is no fixation with resin and no deterioration of texture due to the kneading effect, in the case of pigments, unlike dyes, a large proportion is adsorbed on the fiber surface, which has the problem of poor friction fastness.

[0006] Furthermore, Patent Document 3 reports a sheet in which the pile portion of a sheet made of ultrafine fibers and a polymeric elastic material is colored with an exhaust-coloring type aqueous pigment, and a compound made of low molecular weight polyurethane and silicone resin is applied on top to improve lightfastness. However, because the bond between the fibers and the pigment is only ionic, the coloring power to synthetic fibers is weak, and there is significant pigment shedding due to abrasion, resulting in insufficient colorfastness.

[0007] Furthermore, Patent Document 4 reports a fabric made of synthetic fibers that is colored with a cationic black aqueous pigment, resulting in a fabric with minimal color unevenness. Patent Document 4 recommends the use of binders such as polyurethane, polyester, and polyacrylic acid esters to improve color fastness. However, the use of binders has led to problems such as hardening of the texture and poor friction fastness and abrasion resistance. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 5-331782 [Patent Document 2] Japanese Patent Publication No. 2007-16368 [Patent Document 3] Japanese Patent Publication No. 2004-315986 [Patent Document 4] Japanese Patent Publication No. 2007-239162 [Overview of the project] [Problems that the invention aims to solve]

[0009] In view of the aforementioned prior art, the problem that the present invention aims to solve is to provide a pigment-colored synthetic fiber fabric that has excellent lightfastness and abrasion fastness, high color development, and a good texture. [Means for solving the problem]

[0010] The inventors of this invention, after diligently studying and conducting numerous experiments to solve the aforementioned problems, unexpectedly discovered that a synthetic fiber fabric having the following characteristics could solve the problems, and thus completed the present invention.

[0011] [1] A synthetic fiber fabric composed of synthetic fibers, wherein the synthetic fibers include Polyolefin-based or polyester-based anionic polymers; Pigments containing cationic dispersants; An anionic fixing agent composed of an aromatic sulfonic acid condensate; and A nonionic or cationic modified silicone agent selected from any of dimethyl modification, epoxy modification, and carboxyl modification; A synthetic fiber fabric to which is attached. [2] The synthetic fiber fabric according to [1], wherein the modified silicone agent has an epoxy structure. [3] In the light resistance evaluation carried out in accordance with the e) fifth exposure method described in JIS-L-0843:2006, using a xenon arc irradiation machine, at a black panel temperature of 63 °C, and being grade 4 or higher after 100 MJ of irradiation, the synthetic fiber fabric according to [1] or [2] above. [4] In the rubbing fastness evaluation described in JIS-L-0849, having a dry rubbing fastness of grade 2.5 or higher and a wet rubbing fastness of grade 2.5 or higher, the synthetic fiber fabric according to any one of [1] to [3] above. [5] The synthetic fiber fabric according to any one of [1] to [4] above, to which a polymer elastomer is further attached to the synthetic fiber. [6] The synthetic fiber fabric according to [5] above, wherein the polymer elastomer is polyurethane. [7] An artificial leather containing the synthetic fiber fabric according to any one of [1] to [6] above.

Advantages of the Invention

[0012] The synthetic fiber fabric of the present invention is a synthetic fiber fabric colored with a pigment, which is excellent in light resistance and rubbing fastness, has high color development property, and also has good texture.

Embodiments for Carrying out the Invention

[0013] Hereinafter, embodiments of the present invention will be described in detail. One embodiment of the present invention is a synthetic fiber fabric composed of synthetic fibers, wherein on the synthetic fibers, A polyolefin-based or polyester-based anionic polymer; A pigment containing a cationic dispersant; An anionic fixing agent composed of an aromatic sulfonic acid condensate; and Nonionic or cationic modified silicone agents selected from dimethyl-modified, epoxy-modified, and carboxyl-modified silicones; It is a synthetic fiber fabric to which [something] is attached.

[0014] The synthetic fibers constituting the synthetic fiber fabric of this embodiment may be either multifilament yarns or staple fibers. There are no limitations on the composition of the synthetic fibers, and examples include polyester synthetic fibers, polyamide synthetic fibers, and polyolefin synthetic fibers. Examples of polyester synthetic fibers include polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, and atmospheric pressure dyeable polyethylene terephthalate, while examples of polyamide fibers include nylon 6 and nylon 66. There are no particular limitations on the spinning method of these synthetic multifilaments, and known methods can be used, and undrawn yarns or semi-drawn yarns (POY) may be used in some cases. Furthermore, the yarn may be raw yarn, or processed yarn that has undergone false twisting or twisting. In addition, two or more types of yarn may be air-blended or composite false-twisted, or sea-island type fibers or split fibers that have undergone desaturation treatment with alkali or solvent may be used.

[0015] The cross-sectional shape of the synthetic fiber is not particularly limited and may be round, flat, triangular, L-shaped, T-shaped, Y-shaped, W-shaped, π-shaped, cross-shaped, well-shaped, octave-shaped, octave-shaped, spectacle-shaped, spectacle-shaped with two holes and hollow, dogbone-shaped, and other polygonal shapes, multi-lobed, single-hole hollow, multiple-hole hollow, or irregular shapes, or a mixture of these. Furthermore, the synthetic fiber fabric of this embodiment may be impregnated with polyurethane as needed, or may contain fibrous polyurethane. From the viewpoint of stretchability and shape retention, when the synthetic fiber fabric of this embodiment is considered as 100% by mass, the polyurethane content is preferably 3% to 20% by mass, and more preferably 3% to 15% by mass. The single yarn fineness, total fineness, and number of single yarns of synthetic fibers are not particularly limited and vary depending on the shape and application of the fabric. For example, when used in knitted or woven fabrics, from the viewpoint of texture, the single yarn fineness is preferably 0.05 dtex or more and 5 dtex or less, and more preferably 3.5 dtex or less. The total fineness is preferably 20 dtex or more and 450 dtex or less, and more preferably 350 dtex or less. When used in artificial leather, the single yarn fineness is preferably 0.01 dtex or more and 1.1 dtex or less, and more preferably 0.7 dtex or less. In both cases, the finer the fibers, the more the desired high color development and high colorfastness effects are achieved. The form of the textile fabric is not limited to woven fabrics, knitted fabrics, or artificial leather. Furthermore, the manufacturing methods for each are not limited. The structure of woven and knitted fabrics is also not limited, and napping treatment may be applied as needed. The method for manufacturing artificial leather is not particularly limited, and may include not only those containing polyurethane, which is commonly used, but also artificial leather characterized by using a thermoplastic resin emulsion with an average particle size of 5.0 μm or less as a binder.

[0016] The synthetic fibers of this embodiment must have a pigment containing a cationic dispersant attached to them. In order to adsorb the pigment containing the cationic dispersant onto the fibers at a high concentration, it is necessary to pre-treat the fibers with an anionic polymer. As the anionic polymer used as the anionic treatment agent, polyolefin-based or polyester-based emulsion-type anionizing agents can be used. The anionization process is carried out by immersion dyeing. The temperature during the process is preferably 75°C to 85°C for 10 to 20 minutes. The solid content concentration of the anionizing agent used in the anionization process is preferably 20% to 30% by mass, and the concentration during the process is preferably 1% owf or more, more preferably 2% owf or more, relative to the fiber. There is no particular upper limit to the concentration, but considering the stability of the processing solution, economic efficiency, and the wastewater load due to the large amount of unfixed agent, it is preferable to set the upper limit of the processing concentration to around 10% owf. The amount of anionic polymer adhering to the synthetic fiber fabric is preferably 0.8% owf or more, and more preferably 2.4% owf or more and 10% owf or less. If the amount of anionic polymer adhering to the synthetic fiber fabric is less than 0.8% owf, the adhesion rate of cationic pigments will be low, resulting in poor color development or color unevenness, making it unsuitable.

[0017] Furthermore, in order to more efficiently perform anionization of the fibers, it is also possible to perform cationization prior to the anionization step. As the cationizing agent, amine-based cationizing agents, for example, cationizing agents containing a secondary primary amino group, a tertiary amino group, or a quaternary ammonium group are preferred, and as the anionizing agent, emulsion-based anionizing agents, for example, an anionizing agent that is a polyolefin emulsion or a polyester emulsion can be used. The cationization process is also carried out by immersion dyeing, preferably at a temperature of 75°C to 85°C for 15 to 25 minutes. The solid content concentration of the cationizing agent used in the cationization process is preferably 10% to 20% by mass. The treatment concentration during application may be 0.1 to 1% owf.

[0018] The pigment used for coloring the synthetic fiber fabric in this embodiment must contain a cationic dispersant, from the viewpoint of high adsorption. High adsorption of the pigment to the fibers makes it possible to achieve high color development. The cationic dispersant is preferably a tertiary amine dispersant, from the viewpoint of compatibility with pigments and the decrease in dispersibility at higher temperatures. Examples of tertiary amine dispersants for acrylamide, which is a cationic dispersant, include: (a) Polymers of alkylaminoalkyl(meth)acrylamide, such as dimethyl or diethylaminoethyl(meth)acrylamide, dimethylaminopropyl(meth)acrylamide, or diethylaminopropyl(meth)acrylamide; (b) Polymers of dialkylaminoalkyl (meth)acrylates, such as dimethyl or diethylaminoethyl (meth)acrylate, dimethylaminopropyl (meth)acrylate, or diethylaminopropyl (meth)acrylate; (c) Acrylamide-styrene copolymer; (d) Examples include urethane polymers containing tertiary amino groups.

[0019] The pigment containing the cationic dispersant can be dispersed in a liquid medium such as water. The pigment content is preferably 12% by mass or more and 30% by mass or less, and more preferably 15% by mass or more and 25% by mass or less. If the pigment content is less than 12% by mass, it is difficult to obtain the necessary coloring power, while if it exceeds 30% by mass, viscosity stability deteriorates, which is undesirable.

[0020] Furthermore, the following formula: A = (Cationic dispersant content / Pigment content) × 100 The value A shown is preferably 20% to 70%, and more preferably 30% to 50%. If it is less than 20%, the dispersion stability of the pigment deteriorates, while if it is more than 70%, although the dispersion stability is good, it contains a large amount of dispersant that does not contribute to dispersibility, which is economically disadvantageous and therefore undesirable.

[0021] The amount of pigment containing a cationic dispersant that adheres to the fabric varies depending on the desired color and density, and there are no particular limitations on the range. However, considering the need for clear color development, for example, 200 g / m² is a reasonable amount. 2 For this fabric, 0.048 g / m 2More than 13.6g / m 2 The following is preferred: 0.096 g / m 2 ~6.8g / m 2 It is preferable that it be so.

[0022] In the synthetic fiber fabric of this embodiment, an anionic fixative having a specific structure is attached to the fibers to immobilize the pigment containing the cationic dispersant and to suppress pigment shedding. This fixative must be an anionic fixative consisting of an aromatic sulfonic acid condensate.

[0023] Generally, dye fixatives used to fix dyes come in cationic and anionic types. However, applying a cationic fixative to the aforementioned pigment-colored fabric is undesirable because it may cause the pigment to detach from the fibers. This is presumably because cationic fixatives function similarly to cationic dispersants that disperse pigments.

[0024] The anionic adhesive used in the synthetic fiber fabric of this embodiment may have the structure of an aromatic sulfonic acid condensate, and its molecular weight is not particularly limited. More specifically, phenol sulfonic acid formalin condensate, thiophenol sulfonic acid formalin condensate, and bisphenol S sulfonic acid formalin condensate are preferably used.

[0025] Normally, when coloring fibers with pigments, it is common practice to fix the pigment in a film with acrylic resin or the like to prevent the pigment from falling off, but this has problems such as hardening the texture. In the synthetic fiber fabric of this embodiment, by using a pigment having a cationic dispersant and an anionic fixative capable of ionic bonding, the pigment adsorbed to the fibers by ionic bonding can be firmly bound, and hardening of the texture can also be suppressed. Furthermore, by using an anionic fixative consisting of an aromatic sulfonic acid condensate, the effect of pigment fixation is further enhanced. These are matters that have been discovered for the first time by the inventors of this application.

[0026] The effect of anionic binders, which suppress pigment shedding, in more firmly fixing the specific pigment is thought to be due to their strong ionic effect on cationic pigments. In particular, aromatic sulfonic acids are thought to promote stronger adhesion because their structure makes them more likely to adsorb and adhere to pigments. The treatment method for anionic fixatives is the same as that used for fixing dyes (pigments). It is preferable to apply the fixative by immersion dyeing after coloring with a pigment containing a cationic dispersant. The treatment is carried out at a temperature of 75-85°C for 15-25 minutes. The fixative concentration in the solution during treatment is preferably about half the pigment concentration. The final amount of fixative attached is preferably 0.04-15% owf.

[0027] In the synthetic fiber fabric of this embodiment, after coloring and fixing treatment, it is necessary to apply a nonionic or cationic modified silicone agent, selected from dimethyl-modified, epoxy-modified, and carboxyl-modified materials, as a finishing process, by a process such as DIP-NIP. Generally, pigments, which adhere more strongly to the fiber surface than dyes, tend to detach easily due to friction and abrasion. Improving the surface smoothness can suppress dye detachment.

[0028] Modified silicones commonly used in textiles include dimethyl silicone, amino-modified silicone with an amino structure, epoxy-modified silicone with an epoxy structure, and carboxyl-modified silicone with a carboxyl structure. In the synthetic fiber fabric of this embodiment, the improvement in dry and wet friction fastness is more pronounced when dimethyl-modified silicone, carboxyl-modified silicone, or epoxy-modified silicone is used. The solid content concentration of the agent is not particularly limited, but generally, concentrations of 15% to 45% by mass are commonly used. By applying dimethyl-modified silicone, carboxyl-modified silicone, or epoxy-modified silicone agent, dye loss due to reduced friction is suppressed. Generally, when the smoothness of the substrate is enhanced by applying a smoothing agent, the yarn is likely to slip out due to snagging or the like. As a result, there are concerns about a decrease in snaggability, a decrease in seam slippage resistance, and yarn popping out. In the case of artificial leather composed of a spun sheet and polyurethane, there is also a concern about the problem of frequent yarn slippage. Among the above three types of modified silicone agents, using a modified silicone having an epoxy structure in particular is suitable because it can suppress yarn slippage and yarn popping out, and also exhibit the effect of suppressing dye loss due to reduced friction.

[0029] Although the modified silicone agent varies depending on the solid content, it is preferably treated at a concentration of 7 to 60 g / L, more preferably 10 to 50 g / L. The pickup rate of the treatment liquid is appropriately 65% by mass or more and 90% by mass or less, preferably 70% by mass or more and 85% by mass or less. The adhesion amount to the fabric (cloth) varies depending on the basis weight of the fabric used. For example, in the case of a fabric with a basis weight of 200 g / m 2 basis weight, it is preferably 0.19 to 4.9 g / m 2 , more preferably 0.2 to 4.3 g / m 2 . If it is less than 0.19 g / m 2 , the smoothness is insufficient. On the other hand, if it exceeds 4.9 g / m 2 , problems may occur in seam slippage resistance after sewing the fabric due to excessive smoothness. Also, the texture becomes too sticky, which is not preferable in terms of touch. Also, the drying temperature after treatment with the modified silicone agent is preferably 110°C to 150°C. If it is less than 110°C, there is a concern that the fixing property of the agent is inferior. On the other hand, if it exceeds 150°C, it is likely to lead to texture hardening. Also, the drying time varies depending on the thickness and basis weight of the fabric, but it may be dried for 30 seconds to 90 seconds, more preferably 30 seconds to 60 seconds.

Example

[0030] The present invention will be described in detail below with reference to examples. Each evaluation value in the examples was measured by the following method. (1) Color development A benchtop spectrophotometer, Ci7800, manufactured by X-Rite, was used to measure color at three locations with a light source of D65 and a measurement area of ​​25 mmφ. For black, the L value was used as the measured color value, and for other colors, the K / S value was used, with the average value being adopted. In addition, the color variation ΔE between the three measurement locations was used as the evaluation index for color uniformity.

[0031] (2) Lightfastness In accordance with the fifth exposure method described in JIS-L-0843:2006 (e), a Suga Test Instruments xenon weather meter XL75 was used to determine the degree of discoloration when irradiated with doses of 100 MJ, 200 MJ, and 400 MJ at a black panel temperature of 63°C. The results for 100 MJ are listed in the table. Each dose was scored out of 3 points, and the lowest judgment value was used for the final determination.

[0032] (3) Friction fastness In accordance with JIS-L-0849, the dry and wet friction fastness of cotton fabric was measured using a Japan Society for the Promotion of Science (JSPS) type friction tester. The degree of contamination was graded using a grayscale for contamination. Each grade was scored out of 3 points, and the lowest grade value was used for the final determination.

[0033] (4) Snuggling properties Following the JIS-L-1058 D3 (hacksaw method) procedure, the wood was operated for 5 hours, and then graded based on JIS-certified evaluation photographs. Each grade was assigned a score of 3 points, and the lowest grade value was used for the final determination.

[0034] (5) Seam slippage The evaluation was conducted in accordance with JIS-L-1096B. Each evaluation score was set at 3 points, and the maximum value was used for the final judgment.

[0035] (6) Abrasion resistance The evaluation was conducted in accordance with JIS-L-1096 (Method E, Martindale method, pressing load 12 kPa). The number of abrasion cycles was set to 35,000, and the weight loss was calculated from the ratio of the sample weight before and after abrasion. Each participant was given a score of 3 points, and the one with the greatest weight loss was used for evaluation.

[0036] (7) Sensory evaluation of texture Ten subjects evaluated the texture from the perspectives of (i) surface smoothness and (ii) bending stiffness. (i) A smooth texture without snagging or roughness was considered good. (ii) A soft, flexible texture was considered good. The texture from the perspectives of (i) and (ii) was scored on a scale of 1 to 5. The scores were as follows: 1 is very bad, 2 is bad, 3 is not bad, 4 is good, and 5 is very good. If each person's score for (i) and (ii) was 3 points or higher, and the average of the combined scores of the 10 people for (i) and (ii) was 7 points or higher, the texture was judged to be "good". If these conditions were not met, the texture was judged to be "poor".

[0037] [Example 1] Using polyethylene terephthalate false twist yarn (150 dtex / 48 filaments), a jersey knit fabric was prepared on a 24-gauge single circular knitting machine. After scouring the fabric using a jet dyeing machine, it was treated with a polyester-based anionizing agent (CT I1201, manufactured by Sanyo Shikiso Co., Ltd.) at 80°C for 20 minutes in a bath with an additional 2% owf to perform the anionization treatment of the fabric. The anionized fabric was then treated with a jet dyeing machine, again with an additional 10% owf of a pigment containing a cationic dispersant (EMACOL CT BLACK 4939N, manufactured by Sanyo Shikiso Co., Ltd.), and the temperature was increased to 20°C, 30°C, 40°C, 50°C, 60°C, and 70°C for approximately 10 minutes each, after which it was drained and rinsed with water. Next, an anionic acid fixative (CT FX01, manufactured by Sanyo Shikiso Co., Ltd.) consisting of an aromatic sulfonic acid condensate was added at 5% owf, treated at 80°C for 20 minutes, drained, washed with water, dehydrated, and dried with a shrink surfer or similar. Then, a 30 g / L aqueous solution of a nonionic dimethyl-modified silicone agent (CT WT23, manufactured by Sanyo Shikiso Co., Ltd., 20% solids by mass) was applied by DIP-NIP, and a finishing process was performed on a pin tenter at 130°C for 45 seconds, resulting in a basis weight of 210 g / m². 2 Dimethyl silicone agent is 1.2 g / m² 2 A colored knitted fabric with the attached pigment was obtained. The surface was smooth, flexible, and had a good texture. It had an L value of 17.5, excellent color development, no color unevenness, and also exhibited excellent lightfastness, wet and dry friction fastness, as well as good snagging.

[0038] [Example 2] The colored knitted fabric of Example 2 was obtained in the same manner as in Example 1, except that the pigment containing a cationic dispersant was replaced with EMACOL CT YELLOW 4631N manufactured by Sanyo Shikiso Co., Ltd. at 0.4% owf, and the treatment concentration of the fixative was changed to 0.2% owf. The surface is smooth, flexible, and has a good texture. It exhibits excellent color development, with minimal color unevenness and excellent uniformity (ΔE=0.4), as well as excellent lightfastness, wet and dry friction fastness, and good snagging resistance.

[0039] [Example 3] Except for using a 30 g / L aqueous solution of epoxy-modified silicone agent (CT WT03, 30% solids by mass, manufactured by Sanyo Shikiso Co., Ltd.) as a smoothing agent applied after dyeing, the pigment-dyed bath fabric of Example 3 was obtained in the same manner as in Example 1. The surface is smooth, flexible, and has a good texture. It has an L value of 17.5, excellent color development with minimal color unevenness, and also exhibits superior lightfastness, wet / dry fastness, and improved snagging.

[0040] [Example 4] Except for using a 50 g / L aqueous solution of a carboxyl-modified silicone agent (CT WT13, 12% solids by mass, manufactured by Sanyo Shikiso Co., Ltd.) as a smoothing agent applied after dyeing, the pigment-dyed bath fabric of Example 3 was obtained in the same manner as in Example 1. The surface was smooth, flexible, and had a good texture. The L value was 17.6, indicating excellent color development with minimal color unevenness, and it also exhibited excellent lightfastness and wet / dry friction fastness.

[0041] [Example 5] The knitted fabric of Example 5 was obtained in the same manner as in Example 1, except that the false-twist yarn used was a false-twist yarn of 66 nylon 78 dtex 34 filament. The surface was smooth, bendable, had good texture, with an L value of 16.1, excellent color development, little color unevenness, and was excellent in light fastness, dry and wet rubbing fastness, and had good snagging resistance.

[0042] [Example 6] A colored knitted fabric of Example 6 was obtained in the same manner as in Example 5, except that the pigment containing a cationic dispersant was replaced with EMACOL CT YELLOW 4631N manufactured by Sanyo Shikiso Co., Ltd. at 0.4% owf. It had good texture and touch, excellent color development, with ΔE = 0.3 and little color unevenness, and was excellent in light fastness, dry and wet rubbing fastness, and had good snagging resistance.

[0043] [Example 7] Using a tricot knitting machine with 28 gauge and having three needles, double yarns of polyester 84 dtex / 72 filaments were used for the front needle, and yarns of polyester 84 dtex / 36 filaments were used for the middle needle and the back needle. The weave was front needle 1-0 / 3-4, middle needle 1-0 / 1-2, back needle 2-3 / 1-0, and a tricot knitted fabric was knitted at 70 courses per inch on the knitting machine. Except for using this knitted fabric, a knitted fabric of Example 7 was obtained in the same manner as in Example 1. It had good texture and touch, with an L value of 17.5, excellent color development, no color unevenness, and was excellent in light fastness, dry and wet rubbing fastness, and had good snagging resistance.

[0044] [Example 8] Using false-twisted yarns of 167 dtex / 72 filaments for warp and weft, a 3 / 1 twill fabric was woven. After scouring the fabric by a normal method, pretreatment, coloring with a pigment containing a cationic dispersant, treatment with an anionic fixing agent, and finishing treatment were carried out in the same manner as in Example 1 to obtain a twill fabric. It had good texture and touch, with an L value of 17.8, excellent color development, no color unevenness, and was excellent in light fastness, dry and wet rubbing fastness, and had good snagging resistance and good seam slippage resistance.

[0045] [Example 9] Except for using a 30 g / L aqueous solution of epoxy-modified silicone CT WT03 (manufactured by Sanyo Shikiso Co., Ltd.) as a smoothing agent during the finishing process, the pigment-coated bath fabric of Example 9 was obtained in the same manner as in Example 8. The fabric had a good texture and feel, an L value of 17.8, excellent color development with no uneven coloring, and superior lightfastness and wet / dry friction fastness. It also exhibited superior seam slippage compared to Example 8.

[0046] [Example 10] For the front yarn, we used 84dtex / 24 filament (16 divisions) polyester Sea Island Fiber yarn, and for the middle and back reeds, we used 56dtex / 2 filament polyester yarn. A tricot knit fabric was obtained using the same structure as in Example 7. The knit fabric was treated in a jet dyeing machine with 10 g / L of sodium hydroxide added and at 90°C for 30 minutes to remove easily soluble alkaline components, resulting in a tricot knit fabric with a single fiber fineness of approximately 0.2d for the front yarn. Subsequently, the front portion was napped. The napped pigment-colored tricot of Example 10 was obtained in the same manner as in Example 1, except that the above-mentioned napped tricot fabric was used as the woven fabric. Table 1 shows the performance results of the obtained brushed tricot knit fabric. It had a very good texture and feel, an L value of 20, excellent color development with no color unevenness, and excellent lightfastness.

[0047] [Example 11] Ultrafine polyethylene terephthalate fibers with a single fiber fineness of 0.17 dtex and a melting point of 255°C were produced by direct spinning and cut to a length of 5 mm to form the main short fibers. These short fibers were dispersed in water to prepare papermaking slurries for the surface and back layers. Using the obtained slurries, a total surface weight of 100 g / m² was produced. 2 Backing layer weight 50g / m 2 A three-layer laminated nonwoven sheet was manufactured by continuous papermaking, using a scrim made from 167dtex / 48f polyester fiber processed yarn twisted at 800t / m, with a warp of 53 threads / inch and weft of 62 threads / inch. A three-dimensional entangled nonwoven fabric was then obtained by jetting a high-speed water stream. Finally, it was dried in a pin tenter to obtain a fabric with a basis weight of 200g / m². 2 A sheet-like material was manufactured. The surface of this sheet material was buffed with #400 sandpaper, then impregnated with a solution of 9 wt% polyether-based aqueous polyurethane with 3 wt% sodium sulfate added, to achieve a adhesion rate of 12 wet%, and heated in a pin tenter dryer for 3 minutes, resulting in a basis weight of 200 g / m². 2 They manufactured the raw material for artificial leather. Except for using the resulting artificial leather raw material as a textile fabric, the dimethyl silicone agent is 1.3 g / m², similar to Example 1. 2 The colored artificial leather of Example 11 was obtained by attaching it. The resulting artificial leather had a good texture and feel, a high color development with an L value of 20, no uneven coloring, and excellent lightfastness and wet / dry friction fastness, as well as low weight loss during abrasion.

[0048] [Example 12] Artificial leather of Example 12 was obtained in the same manner as in Example 11, except that the pigment containing the cationic dispersant used was replaced with 0.4% owf EMACOL CT YELLOW 4631N. Similar to Example 11, it had good texture and feel, excellent color development, a ΔE of 0.6 with almost no color unevenness, excellent lightfastness and wet / dry friction fastness, and also high peel strength and low weight loss during abrasion.

[0049] [Example 13] The pigment-colored fabric of Example 13 was obtained in the same manner as in Example 11, except that the pigment containing the cationic dispersant used was EMACOL CT BLUE 4824E at 10% owf and the anionic fixing agent concentration was set to 5% owf. It has a good texture and feel, a K / S value of 23 indicates high color development with no color unevenness, and excellent lightfastness and wet / dry friction fastness, as well as low weight loss when worn.

[0050] [Example 14] Except for using a 30 g / L aqueous solution of epoxy-modified silicone agent (CT WT03, 30% solids, manufactured by Sanyo Shikiso Co., Ltd.) as a smoothing agent during the finishing process, the pigment-colored fabric of Example 14 was obtained in the same manner as in Example 11. The resulting pigment-colored fabric had a good texture and feel, a high color development with an L value of 19.8 and no color unevenness, and excellent lightfastness and wet / dry friction fastness. The weight loss during abrasion was even lower than that of Example 11.

[0051] [Example 15] Ultrafine polyethylene terephthalate fibers with a single fiber fineness of 0.17 dtex and a melting point of 255°C were produced by direct spinning and cut to a length of 5 mm to form the main staple fibers. As heat-fusible staple fibers, Casben 8000 (1.7T5-8000 type, manufactured by Unitika Ltd.), a fully meltable type heat-fusible staple fiber with a single fiber fineness of 1.7 dtex and a length of 5 mm, made from polyethylene terephthalate copolymer with a melting point of 181°C, was used. A mixture of the main short fibers and the heat-fusible short fibers in a weight ratio of 95:5 was used, and these short fibers were dispersed in water to prepare a slurry. From this slurry, a papermaking method was used to produce a material with a basis weight of 110 g / m². 2 A paper-formed sheet for the surface fiber layer was prepared. For the back fiber layer, a mixture of the main short fibers and the heat-fusible short fibers in a weight ratio of 97:3 was dispersed in water to prepare a slurry, which was then formed by papermaking to a basis weight of 60 g / m². 2 A papermaking sheet for the back fiber layer was prepared. A sheet made of polyethylene terephthalate yarn with a basis weight of 100 g / m² is placed between the sheet made of paper for the surface fiber layer and the sheet made of paper for the back fiber layer, with a density of 166 dtex / 48 f. 2 A woven scrim was inserted to create a three-layer laminate. The three-layer laminate was then subjected to a high-speed water jet using a straight-flow injection nozzle to entangle and integrate the layers, and finally dried at 100°C using an air-through type pintenter dryer to obtain a three-layer nonwoven fabric for artificial leather. The surface of the nonwoven fabric for artificial leather was napped by buffing the surface fiber layer with 400-mesh sandpaper, and then heat-treated at 200°C using a pin tenter dryer to heat-seal short fibers. Except for the textile fabric used, the colored artificial leather of Example 15 was obtained in the same manner as in Example 11. The resulting artificial leather had a good texture and feel, a high color development with an L value of 19.8 and no uneven coloring, and excellent lightfastness and wet / dry friction fastness, as well as low weight loss when worn.

[0052] [Example 16] As the sea component, polyethylene terephthalate copolymerized with 8 mol% sodium 5-sulfoisophthalate was used, and as the island component, polyethylene terephthalate was used, resulting in a composite ratio of 20% by mass for the sea component and 80% by mass for the island component. This yielded a sea-island type composite fiber with 16 islands / 1f and an average fiber diameter of 18 μm. The obtained sea-island type composite fiber was cut to a fiber length of 51 mm to form staples, which were then passed through a card and a cross wrapper to form a fiber web. A fiber sheet was obtained by needle punching. The obtained fiber sheet was immersed in 95°C hot water to shrink it, and then dried in a pin tenter dryer at 100°C for 5 minutes to obtain a basis weight of 600 g / m². 2 A single-layer fiber sheet was obtained. The obtained fiber sheets were immersed in a 10 g / L sodium hydroxide aqueous solution heated to 95°C for 25 minutes to remove the marine components from the sea-island type composite fibers. The average diameter of the individual fibers constituting the fiber sheets after desalination was 4 μm. Next, the fiber sheet was impregnated with an impregnation solution containing 9.0% by mass of polyether-based aqueous PU dispersion "AE-12" (manufactured by Nikka Chemical Co., Ltd.) (solid content concentration: 35% by mass), with an average primary particle size of 0.3 μm, and 30% by mass of anhydrous sodium sulfate as an impregnation aid (solid content by mass). Then, it was subjected to moist heat solidification at 100°C for 5 minutes, and hot air drying at 130°C to 150°C for 2 to 6 minutes using a pin tenter dryer. Subsequently, the material was immersed in hot water heated to 95°C to extract and remove the impregnated anhydrous sodium sulfate, obtaining a sheet-like material filled with water-dispersible PU resin. The ratio of water-dispersible PU resin to the total fiber mass of this sheet-like material was 30% by mass. Subsequently, the sheet material was cut in half perpendicular to its thickness using a halving machine with an endless band knife. The unhalved side was then napped using #400 emery paper, and the material was dried in a tenter dryer at 100°C for 5 minutes to obtain a single layer of artificial leather. The colored artificial leather of Example 16 was obtained in the same manner as in Example 11, except that the obtained artificial leather was used. The resulting colored artificial leather had a good texture and feel, a high color development with an L value of 20.5, no uneven coloring, and excellent lightfastness and wet / dry friction fastness, as well as minimal weight loss during wear.

[0053] [Example 17] Except for using the same fabric as in Example 16, the colored artificial leather of Example 17 was obtained in the same manner as in Example 2. The resulting colored artificial leather had a good texture and feel, high color development with a ΔE of 0.6 and minimal color unevenness, excellent lightfastness and wet / dry friction fastness, and also exhibited low weight loss during abrasion.

[0054] [Example 18] After scouring, 0.5% owf of a cationization agent (CT F1101, manufactured by Sanyo Shikiso Co., Ltd., with a solid content of 15%) was added to the bath and treated at 80°C for 20 minutes. Then, 5% owf of an anionization agent (CT I1201, manufactured by Sanyo Shikiso Co., Ltd.) was added to the bath and treated at 80°C for another 20 minutes. Except for these steps, the knitted fabric of Example 18 was obtained in the same manner as in Example 1. The knitted fabric had a good texture and feel, an L value of 17.6, excellent color development with no unevenness in color, and also exhibited excellent lightfastness, wet and dry friction fastness, as well as excellent snagging properties.

[0055] [Example 19] After scouring the fabric, the same coloring pretreatment as in Example 18 was performed, and then, as in Example 11, it was colored with a pigment containing a cationic dispersant, treated with an anionic fixative, and then finished to obtain the colored artificial leather of Example 19. The resulting artificial leather had a good texture and feel, a high color development with an L value of 19.4, no uneven coloring, excellent lightfastness and wet / dry friction fastness, and also exhibited low weight loss during abrasion.

[0056] [Example 20] Except for using the same smoothing agent as in Example 3, the process was carried out in the same manner as in Example 11 to obtain the pigment-colored fabric of Example 20. The resulting artificial leather had a good texture and feel, a high color development with an L value of 19.4 and no uneven coloring, and excellent lightfastness and wet / dry friction fastness. Furthermore, the weight loss during abrasion was even lower than that of Example 18.

[0057] [Comparative Example 1] A circular knitted fabric of Comparative Example 1 was obtained in the same manner as in Example 1, except that the anionization treatment before pigment coloring was not performed. The resulting colored knitted fabric had an L value of 22.8, indicating poor color development and significant color unevenness depending on the location in the fabric.

[0058] [Comparative Example 2] A circular knitted fabric of Comparative Example 2 was obtained in the same manner as in Example 2, except that the anionization treatment before pigment coloring was not performed. The resulting colored knitted fabric showed extremely large variations in color depending on the location within the fabric.

[0059] [Comparative Example 3] A circular knitted fabric of Comparative Example 3 was obtained in the same manner as in Example 1, except that no finishing agent was added and the fabric was DIP-NIPped with water and then heat-set. The resulting colored knitted fabric had an L value of 17.9, indicating good color development, no unevenness in color, and good lightfastness. However, it was inferior in texture and feel, and also had low abrasion fastness.

[0060] [Comparative Example 4] The artificial leather of Comparative Example 4 was obtained in the same manner as in Example 11, except that no finishing agent was added and the material was DIP-NIP-applied with water and then heat-set. The resulting colored knitted fabric had an L value of 20, indicating good color development, no unevenness in color, and good lightfastness. However, it was inferior in texture and feel, as well as in friction fastness and abrasion resistance.

[0061] [Comparative Example 5] A colored circular knit fabric of Comparative Example 5 was obtained in the same manner as in Example 1, except that the fixing agent treatment was omitted after coloring. The resulting knitted fabric had a good texture and feel, a high color development with no color unevenness (L value of 17.5), and excellent lightfastness, but its abrasion fastness was very low.

[0062] [Comparative Example 6] A colored artificial leather of Comparative Example 6 was obtained in the same manner as in Example 11, except that the anionic adhesive treatment after coloring was omitted. The resulting artificial leather had good texture and feel, a high color development with no color unevenness (L value of 19.8), and excellent lightfastness, but its abrasion fastness was extremely low.

[0063] [Comparative Example 7] The finishing process was carried out in the same manner as in Example 1, except that Nikka Silicone AMZ (manufactured by Nikka Chemical Co., Ltd.), an amino-modified silicone, was used as the smoothing agent during the finishing process, to obtain the colored circular knit fabric of Comparative Example 7. The resulting knitted fabric had good texture and feel, a high color development with no color unevenness (L value of 17.5), and excellent lightfastness, but it had low friction fastness and snagging resistance.

[0064] [Comparative Example 8] The finishing process was carried out in the same manner as in Example 11, except that Nikka Silicone AMZ (manufactured by Nikka Chemical Co., Ltd.), an amino-modified silicone, was used as the smoothing agent during the finishing process, to obtain the colored artificial leather of Comparative Example 8. The resulting artificial leather had good texture and feel, a high color development with an L value of 20 and no uneven coloring, and excellent lightfastness, but it had poor abrasion resistance and very low friction fastness.

[0065] [Comparative Example 9] A colored knitted fabric of Comparative Example 8 was obtained in the same manner as in Example 1, except that the fixing agent used for the post-coloring treatment was Fix Oil R-737 (manufactured by Meisei Chemical Industry Co., Ltd., solid content 50%) 7.8% owf, which is a cationic fixing agent. The resulting knitted fabric had good texture and feel, a high color development with no color unevenness (L value of 17.5), and excellent lightfastness, but its abrasion fastness was very low.

[0066] [Comparative Example 10] Using the fabric from Example 11, after scouring, instead of a pigment containing a cationic dispersant, a disperse dye of Sumikaron UL Blue GF(A)200 at 5% owf was used, and the fabric was dyed using the disperse dye at 130°C for 30 minutes in the usual manner. After neutralization, a reductive wash was performed at 80°C for 20 minutes in a solution to which 4 g / L each of thiourea dioxide and sodium hydroxide were added. The finishing process was carried out in the same manner as in Example 11 to obtain the colored fabric of Comparative Example 13. The comparison of the obtained results showed that the texture and feel were good, the K / S ratio was 23, indicating good color development and no unevenness in color, but the lightfastness was poor.

[0067] The performance results of the knitted fabrics or artificial leathers obtained in Examples 1-20 and Comparative Examples 1-10 are shown in Tables 1-4 below. [Table 1]

[0068] [Table 2]

[0069] [Table 3]

[0070] [Table 4] [Industrial applicability]

[0071] The textile fabric according to the present invention has high color development, excellent lightfastness, abrasion fastness, and texture due to the attachment of specific pigments, specific pigment fixatives, and specific silicone smoothing agents. When used in textiles made with ultrafine fibers, lightfastness can be obtained without using expensive, highly lightfast dyes, making it suitable for use in relatively inexpensive applications where lightfastness is required. Its specific uses are not particularly limited and it can be used in bags, shoe covers, clothing, and furniture materials used both indoors and outdoors. However, it is particularly well-suited for applications requiring high lightfastness, such as car seats and interiors for vehicles, upholstery for sofas and chairs used both indoors and outdoors, and fabrics for outdoor use such as glamping. Furthermore, the coloring technology using the pigment described in this application reduces the amount of dye used and the amount of wastewater compared to the immersion dyeing method using general disperse dyes, thus contributing to a reduction in environmental impact.

Claims

1. A synthetic fiber fabric composed of synthetic fibers, wherein the synthetic fibers include Polyolefin-based or polyester-based anionic polymers; Pigments containing cationic dispersants; Anionic adhesives consisting of aromatic sulfonic acid condensates; and Nonionic or cationic modified silicone agents selected from dimethyl-modified, epoxy-modified, and carboxyl-modified silicones; A synthetic fiber fabric in which these are attached in this order.

2. The synthetic fiber fabric according to claim 1, wherein the modified silicone agent has an epoxy structure.

3. A synthetic fiber fabric according to claim 1 or 2, wherein, in a lightfastness evaluation conducted in accordance with e) Exposure method 5 described in JIS-L-0843:2006, using a xenon arc irradiator and at a black panel temperature of 63°C, it is grade 4 or higher when irradiated with 100 MJ.

4. A synthetic fiber fabric according to any one of claims 1 to 3, wherein, in the friction fastness evaluation described in JIS-L-0849, it has a dry friction rating of 2.5 or higher and a wet friction rating of 2.5 or higher.

5. The synthetic fiber fabric according to any one of claims 1 to 4, wherein a polymeric elastic material is further attached to the synthetic fiber.

6. The synthetic fiber fabric according to claim 5, wherein the polymeric elastic material is polyurethane.

7. Artificial leather comprising a synthetic fiber fabric according to any one of claims 1 to 6.

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