JP2006138033A - Method for treating synthetic fiber and textile product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a treatment method by which finishing oils contained in synthetic fibers and textile products are enzymically hydrolyzed with a surfactant. <P>SOLUTION: The treatment method removes finishing oil contained in synthetic fibers and textile products by hot water treatment using a surfactant and an enzyme. Consequently, problems of reduction in dyeability, wiping properties, qualities of textile product, etc., by a sizing agent, a finishing oil, etc., attached as foreign matters of synthetic fibers and textile products during productions and processing processes of synthetic fibers and textile products are solved. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for treating fibers and textile products, which can reduce and clean the fibers used for knitting and weaving or the like, or pastes and oils adhered during the manufacturing and processing steps of textile products. In particular, the oil agent contained in the synthetic fiber and the fiber product is removed by a hot water treatment using a surfactant and an enzyme in combination.

  Conventionally, spinning oils and silicone oils are used for the spinning process, sizing oils and sizingless oils are used for the weaving process, knitting oils are used for the knitting process, and mineral oils and waxes are used. It is used as a process oil for textile products. For example, if these oils adhere to fibers during the dyeing process, problems such as a decrease in dyeing fastness and uneven dyeing occur. In addition, when a hard disk is polished with a polishing cloth containing an oil agent, the oil agent is eluted from the polishing cloth under the influence of a solvent or frictional heat during polishing, and the surface to be polished is recontaminated. In order to improve such problems, a processing step for cleaning and removing foreign substances such as oil is necessary.

  Conventionally, as a fiber treating agent, a nonionic surfactant such as polyoxyalkylene alkyl ether or polyoxyalkylene alkyl allyl ether is used alone, or an alkylbenzene sulfonate, aliphatic alcohol sulfate, or the like. In general, an anionic activator is used. In addition, alkaline agents such as sodium carbonate and sodium hydroxide are added to these surfactant solutions, or they are also used in combination with chelating agents such as ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, and polycarboxylates. Yes.

  In order to prevent problems such as weight loss and dyeing spots, a method of treating an oil agent or a paste adhering to a fiber with a surfactant and a terpene compound is known (for example, see Patent Document 1). The terpene compound has good oil agent removability, little toxicity, and relatively good biodegradability. Similarly, hydrolase is also less toxic, has good biodegradability, and is expected as a fiber treatment agent that does not burden the environment.

  It is known that cyclic oligomers eluted from polyethylene terephthalate can be hydrolyzed by using in combination with lipolytic enzymes such as lipase, esterase, phospholipase and / or lysophospholipase and / or biopolyester hydrolase, or surfactant. (For example, refer to Patent Document 2). However, the effect of reducing the oil agent in polymers other than polyethylene terephthalate has not been studied. Further, in the present invention, cylindrical knitting was used as the fiber product, and the hydrolysis treatment with lipase was examined, but it could not be said that there was a sufficient effect for reducing the oil agent. In order to remove the oil agent, the present invention has intensively studied a surfactant, a hydrolase and a hot water treatment, and found an effective synthetic fiber and fiber product treatment method.

Japanese Patent Laid-Open No. 6-341055 JP 2002-0665300 A

  Modified cross-section yarns, split yarns, ultrafine fibers, and the like have been developed centering on synthetic fibers, and oil agents with improved smoothness corresponding to these have been used in large quantities. Accordingly, it becomes difficult to remove a large amount of oil adhering to the fibers with conventional surfactants alone, and problems such as weight loss and dyeing spots due to residual and reattachment of the oil have come to occur. It was.

  Further, with higher definition of computer disks and the like, higher performance polishing is required. Even a small amount of dirt can lead to a decrease in the quality of hard disks and the like, and texture tapes and wiping loss with less eluent such as oil are required.

  The present invention intends to hydrolyze an oil contained in a synthetic fiber and a textile product in combination with a surfactant. More preferably, the treatment method is characterized by removing the oil agent contained in the conjugate fiber and the conjugate fiber product composed of the lipophilic polymer and the hydrophilic polymer by a hot water treatment using a surfactant and an enzyme in combination.

  By removing oils and the like contained in synthetic fibers and fiber products, it is expected to prevent dyeing unevenness and improve dyeing fastness during the dyeing process. Alternatively, it is expected not only to prevent re-contamination of the surface to be polished due to foreign matters such as oil agent eluted from the polishing cloth, but also to improve the wiping property. In addition, if the oil adsorbent made of polypropylene is washed by the treatment method of the present invention, the oil adsorption performance can be further improved.

  In the present invention, a method for treating a synthetic fiber and a textile product has been shown in which not only the lipophilic soil adhered to the lipophilic polymer but also the hydrophilic soil adhered to the hydrophilic polymer can be simultaneously washed and removed. A method for removing dirt such as an oil agent adhering to such a polymer has not been studied so far. Moreover, the example which examined the method of wash | cleaning the fine stain | pollution | contamination seen with a microfiber could not be confirmed. Furthermore, the lipophilic polymer has a lot of oil agent adhesion, and even if it is washed with a general surfactant, the problem of redeposition such as dirt and surfactant cannot be overlooked and a sufficient effect cannot be obtained. It was. Therefore, a treatment method comprising a combination of an enzyme, a surfactant, and a hot water treatment that has been effective in reducing oils has been studied for many years.

  Examples of the fiber-forming polymer that can be used in the present invention include aromatic polyesters such as polyethylene terephthalate, polybutylene terephthalate, and polyhexamethylene terephthalate, polylactic acid, polyethylene succinate, polybutylene succinate, polybutylene succinate adipate, poly Hydroxybutyrate-polyhydroxyvalylate copolymer, aliphatic polyesters such as polycaprolactone and copolymers thereof, aliphatic polyamides such as nylon 6, nylon 66, nylon 10, nylon 12, nylon 6-12, and copolymers thereof Examples thereof include polyolefins such as coalescence, polypropylene, polyethylene, polybutene, and polymethylpentene, and copolymers thereof.

  Surfactants include cationic surfactants, anionic surfactants, nonionic surfactants, amphoteric surfactants, and mixtures thereof.

  Suitable enzymes that can be incorporated into the surfactant include proteases of plant, animal, bacterial, fungal and yeast origin, amylases, lipases, and hydrolases of mixtures thereof. Preferred processing conditions are also affected by pH activity, heat stability, stability to active detergents and the like.

  If the processing agent for textiles suitable for this invention is mentioned, the power plus joy (trademark, the product made by P & G) marketed as a synthetic detergent for kitchens is preferable. These general products are cheaply manufactured and easy to handle.

  The power plus joy is composed of a surfactant mainly composed of sodium alkyl ether sulfate, alkyl amine oxide and polyoxyethylene alkyl ether, and a hydrolase.

  The condition of the hot water treatment using the power plus joy is preferably less than 100 ° C. in order to suppress the risk of bumping. In particular, in order to obtain a good cleaning effect, the range of 90 to 95 ° C. is preferable from the viewpoint of safety. The use concentration of the power plus joy can be variously selected depending on the type of fiber to be applied, but 10% or more is more preferable from the viewpoint of the cleaning effect, and is suitable for cleaning the oil agent contained in the synthetic fiber and the fiber product. . More preferably, it can be used for cleaning of a composite fiber composed of a lipophilic polymer and a hydrophilic polymer and an oil agent contained in the composite fiber product.

  The treatment method of the present invention is very effective for cleaning an oil agent or the like adhering to a cylindrical braid of a split type composite fiber composed of polypropylene having an aliphatic skeleton and nylon 6 having an amide bond. Furthermore, the cleaning effect of the treatment method of the present invention was also confirmed for cylindrical knitting of split type composite fibers using polyethylene terephthalate instead of polypropylene.

  The treatment method of the present invention had almost the same cleaning effect as carbon tetrachloride, an organic solvent excellent in removing oils and the like, so regardless of a wide variety of fibers and textiles, and the spinning oil used. A sufficient effect can be expected for reducing the amount of oil contained in fibers and fiber products.

  Examples The present invention will be described more specifically with reference to examples. However, the present invention is not limited to the following examples as long as the gist thereof is not exceeded.

  Polypropylene (PP) having an MFR value (JIS K7210: 99) of 20 and nylon 6 (6N) having a relative viscosity of 2.5 in a 1 g / 100 ml solution in concentrated sulfuric acid at 25 ° C. were individually melt-extruded. Then, a split type composite fiber (hereinafter PP / 6N-Belima X) in which a triangular cross section PP is divided into 8 around a radial cross section 6N, 110dtex / A 50 f drawn yarn was obtained. As a spinning fluid of PP / 6N-Berima X, TERON PP-267 (manufactured by Matsumoto Yushi Seiyaku Co., Ltd.) was used.

  In addition, in order to confirm the effectiveness of the treatment method of the present invention, in Example 4, polyethylene terephthalate (PET) was used instead of PP, and split composite fibers (hereinafter referred to as PET / PET) having the above cross-sectional shape were used. 6N-Berima X) was prepared and the cleaning effect of oils and the like was examined. As a spinning fluid for PET / 6N-Berima X, ESK-205 (manufactured by Takemoto Yushi Co., Ltd.) was used.

  The drawn yarn of the obtained PP / 6N-Berima X can be easily converted into ultrafine fibers made of polypropylene and nylon 6 of 0.5 dtex or less as shown in FIG. 1 by hydrothermal treatment at 60 to 100 ° C. for 20 minutes or more. Divided.

  The sample used in this example is a cylinder knitting machine CR-B type (manufactured by Koike Machinery Co., Ltd.) based on PP / 6N-Berima X drawn yarn, and used. did. Oils and the like adhering to the tube knitting were washed by hot water treatment including power plus joy.

After washing, the content of acetone-soluble eluate was calculated by a Soxhlet extraction method for the tubular braid. The method is as shown below.

  Tube knitting (Ag) and acetone (manufactured by Wako Pure Chemical Industries, Ltd.) 100 ml subjected to the treatment method of the present invention were added to a Soxhlet extractor and refluxed at 80 to 85 ° C. for 60 minutes. The obtained eluate was concentrated and then washed in the order of hexafluoroisopropanol (manufactured by Central Glass Co., Ltd.): Chloroform (manufactured by Wako Pure Chemical Industries, Ltd.) = 1: 1 and acetone in this order, transferred to an aluminum cup and evaporated to dryness. Solidified. Further, the aluminum cup was dried at 105 ° C. for 1 hour and returned to room temperature, and then the absolute dry mass (Bg) of the acetone-soluble eluate in the aluminum cup was measured.

  In addition, content (weight%) of acetone soluble eluate was determined by following formula (1). Eluent content (% by weight) = (B / A) × 100 (1)

  The acetone-soluble eluate after the content was measured was analyzed with a Fourier transform infrared spectrophotometer (FT-IR) (Nexus 670, manufactured by ThermoNicolet) to confirm the components of the oil.

  As a control example, FIG. 2 shows an absorption spectrum of an untreated PP / 6N-Berima X tube knitted by FT-IR without using the treatment method of the present invention. In FIG. 3, the FT-IR absorption spectrum of the spinning oil agent (TERON PP-267) used for PP / 6N-Berima X is shown.

  4 is an FT-IR absorption spectrum of the acetone-soluble eluate of Comparative Example 2 below, and FIG. 5 is an FT-IR absorption spectrum of the acetone-soluble eluate of Example 2 below. By comparing the absorption spectra of FIG. 4 and FIG. 5 with the acetone-soluble eluate, it has been clarified that the hot water treatment with the addition of power plus joy has a greater effect in reducing the oil agent.

[Example 1]
A hot water treatment was performed using a PP / 6N-Berima X tube braid and a power plus joy 20% aqueous solution at a bath ratio of 1:50 and 90-95 ° C. for 20 minutes. Then, after washing with water and dehydration, it was dried for 2 hours with a dryer at 70 ° C., and the content [wt%] of acetone-soluble eluate was measured by Soxhlet extraction method. The results are shown in Table 1.

[Example 2]
In the same manner as in Example 1 except that the concentration condition of the power plus joy of Example 1 was changed to 10%, the content [wt%] of the acetone-soluble eluate was determined from the PP / 6N-Berima X cylinder. Moreover, the eluate was analyzed by FT-IR and the component of the oil agent was confirmed. The results are shown in Table 1 and FIG.

[Example 3]
In the same manner as in Example 1 except that the concentration condition of the power plus joy in Example 1 was changed to 6%, the content [wt%] of the acetone-soluble eluate was determined from the PP / 6N-Berima X cylinder. The results are shown in Table 1.

[Comparative Example 1]
The untreated PP / 6N-Berima X tube knitting without using the treatment method of the present invention was determined by the Soxhlet extraction method for the content [wt%] of the acetone-soluble eluate. The results are shown in Table 1.

[Comparative Example 2]
PP / 6N-Berima X tube knitting is done at 100 ° C only with hot water treatment without using fiber treating agent.
After treatment for 10 minutes and then washing with warm water at 60 ° C. for 10 minutes, the content [wt%] of the acetone-soluble eluate was determined by the Soxhlet extraction method described above. Moreover, the eluate was analyzed by FT-IR and the component of the oil agent was confirmed. The results are shown in Table 1 and FIG.

[Comparative Example 3]
PP / 6N-Berima X tube knitting is treated with hydrothermal treatment at 90 to 95 ° C. for 20 minutes, followed by the concentration of lipolytic enzyme lipase OF ( Candida cylindracea strain, manufactured by Meito Sangyo Co., Ltd.) 0.3 × 10 ^It stirred at 35-40 degreeC for 120 minute (s) using ^-2 % aqueous solution. Then, the content [wt%] of the acetone-soluble eluate was determined by the Soxhlet extraction method. The results are shown in Table 1.

[Comparative Example 4]
PP / 6N-Berima X tube knitting is used with an aqueous solution consisting of a surfactant SSK-4 (Matsumoto Yushi Seiyaku Co., Ltd.) at a concentration of 3% and sodium hydroxide (Wako Pure Chemical Industries, Ltd.) at a concentration of 2%. The mixture was stirred at 90 to 95 ° C. for 20 minutes. Then, the content [wt%] of the acetone-soluble eluate was determined by the Soxhlet extraction method. The results are shown in Table 1.

[Comparative Example 5]
PP / 6N-Berima X tube knitting was stirred at 90 to 100 ° C. for 30 minutes using an aqueous solution of 2% concentration of surfactant score roll C-110 (manufactured by Kao Corporation). Then, the content [wt%] of the acetone-soluble eluate was determined by the Soxhlet extraction method. The results are shown in Table 1.

[Comparative Example 6]
After immersing the PP / 6N-Berima X tube braid in a carbon tetrachloride (Wako Pure Chemical Industries) solution at room temperature for 24 hours, the tube braid is dried and then subjected to the above Soxhlet extraction method. The content [wt%] of the acetone-soluble eluate was determined. The results are shown in Table 1.

[Example 4]
A pipe knitting of a split composite fiber of PET / 6N-Berima X in which polypropylene was changed to polyethylene terephthalate (PET) was prepared and evaluated. In addition, ESK-205 (made by Takemoto Yushi Co., Ltd.) was used as the spinning oil. The cylindrical knitting was stirred for 30 minutes at a bath ratio of 1:50 and 90 to 100 ° C. using an aqueous solution of 10% power plus joy and subjected to hot water treatment. Then, after washing with water and dehydration, it was dried for 2 hours with a dryer at 70 ° C., and the content [wt%] of the acetone-soluble eluate was measured by the above Soxhlet extraction method. The results are shown in Table 1.

[Comparative Example 7]
The PET / 6N-Berima X tube knitting was immersed in a carbon tetrachloride (Wako Pure Chemical Industries) solution at room temperature for 24 hours, and then the tube knitting was dried, followed by the above Soxhlet extraction method. The content [wt%] of the acetone-soluble eluate was determined. The results are shown in Table 1.

[Comparative Example 8]
The PET / 6N-Berima X cylinder was stirred at 90 to 100 ° C. for 30 minutes using an aqueous solution of 2% concentration of surfactant score roll C-110 (manufactured by Kao Corporation). Then, the content [wt%] of the acetone-soluble eluate was determined by the Soxhlet extraction method. The results are shown in Table 1.

In Figure 2, an infrared absorption spectrum measured by using a tubular knitting untreated PP / 6 N- Berima X of polypropylene and nylon 6, nylon ^{6, 1544cm -1, 1641cm -1,} around 3300 cm ^-1 A characteristic absorption peak was observed. ^{Polypropylene, 1377cm -1, 1460cm -1,} were observed characteristic absorption peak around 2839~2958cm ^-1.

In FIG. 3, the infrared absorption spectrum of the spinning oil agent (made by Matsumoto Yushi Seiyaku Co., Ltd., TERON PP-267) used for obtaining the above-mentioned drawn yarn of PP / 6N-Berima X is shown. 1114 cm ⁻¹ , 1739 cm ⁻¹ , 2857-2926 cm ⁻¹ and had characteristic peaks.

FIG. 4 is an infrared absorption spectrum of the acetone-soluble eluate (0.56 wt%) obtained in Comparative Example 2. The eluate derived from polypropylene had characteristic absorption peaks in the vicinity of 1378 cm ⁻¹ and 2856 to 2956 cm ⁻¹ . Moreover, the absorption peak of the spinning oil agent was confirmed to have characteristic absorption peaks in the vicinity of 1115 to 1150 cm ⁻¹ and 1742 cm ⁻¹ . However, the peak of the eluate derived from nylon 6 has not been detected, and it is estimated that it was almost removed only by the hot water treatment.

FIG. 5 is an infrared absorption spectrum of the acetone-soluble eluate (0.33% by weight) obtained in Example 2. When FIG. 4 and FIG. 5 were compared, the same elution product derived from polypropylene and the absorption peak of the spinning oil agent were observed. Moreover, although the absorption peak of the power plus joy added as a fiber processing agent was confirmed by 1207-1249 cm < ^-1 > etc., content of acetone soluble eluate is 0.56 [weight%] to 0.33 [weight%]. It is considered that the amount of the spinning oil adhering to a large amount during the cylinder knitting also decreased.

  By removing the oil agent contained in the synthetic fiber and the fiber product using the treatment method of the present invention, it is expected that the functional properties such as the dyeability, wiping property and surface area effect of the synthetic fiber and the fiber product are improved.

  For example, the removal of the oil agent adhering to the synthetic fiber and the fiber product is expected to prevent uneven dyeing and improve the dyeing fastness during the dyeing process. Alternatively, it is expected not only to prevent re-contamination of the cleaning surface due to foreign matters such as oil agent eluted from the polishing cloth, but also to improve the wiping property.

It is a cross-sectional photograph after splitting of a split type composite fiber made of polypropylene and nylon 6. It is an infrared absorption spectrum of a cylindrical knitting of untreated PP / 6N-Berima X. It is an infrared absorption spectrum of the spinning oil agent TERON PP267 (manufactured by Matsumoto Yushi Seiyaku Co., Ltd.) used in PP / 6N-Berima X. 3 is an infrared absorption spectrum of an acetone-soluble eluate obtained by the method described in Comparative Example 2. 2 is an infrared absorption spectrum of an acetone-soluble eluate obtained by the method described in Example 2.

Claims (3)

A method for treating a synthetic fiber and a textile product, wherein the oil agent contained in the synthetic fiber and the textile product is removed by a hot water treatment in combination with a surfactant and an enzyme. The method for treating synthetic fibers and textile products according to claim 1, comprising hydrothermal treatment using an enzyme and a surfactant contained in Power Plus Joy (registered trademark, manufactured by P & G). The method for treating synthetic fibers and textiles according to claim 1 or 2, wherein the constituents of the fibers and textiles are composed of a lipophilic polymer having an aliphatic skeleton or / and a hydrophilic polymer having an amide bond.