EP3656897B1 - Verdünnte lösung eines kunstfaserbehandlungsmittels und verfahren zur herstellung von kunstfasern - Google Patents

Verdünnte lösung eines kunstfaserbehandlungsmittels und verfahren zur herstellung von kunstfasern Download PDF

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Publication number
EP3656897B1
EP3656897B1 EP19767184.5A EP19767184A EP3656897B1 EP 3656897 B1 EP3656897 B1 EP 3656897B1 EP 19767184 A EP19767184 A EP 19767184A EP 3656897 B1 EP3656897 B1 EP 3656897B1
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EP
European Patent Office
Prior art keywords
synthetic fiber
treatment agent
fiber treatment
diluted solution
mass
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EP19767184.5A
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English (en)
French (fr)
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EP3656897A4 (de
EP3656897A1 (de
Inventor
Yuichiro Murakami
Takayuki Sato
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Takemoto Oil and Fat Co Ltd
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Takemoto Oil and Fat Co Ltd
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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
    • D02G1/026—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting in the presence of a crimp finish
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
    • D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
    • D01F11/08—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/096—Humidity control, or oiling, of filaments, threads or the like, leaving the spinnerettes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D11/00—Other features of manufacture
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/12—Stretch-spinning methods
    • D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/224—Selection or control of the temperature during stretching
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/005—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one rotating roll
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/01—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with hydrogen, water or heavy water; with hydrides of metals or complexes thereof; with boranes, diboranes, silanes, disilanes, phosphines, diphosphines, stibines, distibines, arsines, or diarsines or complexes thereof
    • D06M11/05—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with hydrogen, water or heavy water; with hydrides of metals or complexes thereof; with boranes, diboranes, silanes, disilanes, phosphines, diphosphines, stibines, distibines, arsines, or diarsines or complexes thereof with water, e.g. steam; with heavy water
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/165—Ethers
    • D06M13/17—Polyoxyalkyleneglycol ethers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
    • D06M13/248—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing sulfur
    • D06M13/256—Sulfonated compounds esters thereof, e.g. sultones
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
    • D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
    • D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/46—Compounds containing quaternary nitrogen atoms

Definitions

  • the present invention relates to a diluted solution of a synthetic fiber treatment agent that can sufficiently prevent oil drop in a spinning and stretching method in which the number of winding turns of a yarn on a heating roller is small, ensures good spinnability, and can improve the yarn quality and dyeability of the obtained yarn, and also relates to a method for manufacturing a synthetic fiber.
  • synthetic fibers such as polyester fibers are generally produced by a direct spinning and stretching method in which a melt-spun filament is immediately stretched and then wound.
  • the direct spinning and stretching method is performed using a spinning and stretching machine in which an aqueous oil agent (diluted solution of a synthetic fiber treatment agent) for imparting functions such as smoothness is adhered to the surface of a melt-spun yarn and stretching is carried out with a plurality of rollers such as heating rollers.
  • a spun yarn is stretched by two heating rollers.
  • Each heating roller is provided with a separation roller, and the yarn is wound around the heating roller and the separation roller a plurality of times.
  • the yarn is heated by the upstream heating roller to a temperature equal to or higher than the glass transition temperature and then stretched between the two heating rollers.
  • Patent Document 2 a yarn is wound and stretched in a partial-winding state in which the winding angles around a plurality of heating rollers are each less than 360 degrees. At this time, a diluted solution of a synthetic fiber treatment agent which has a treatment agent concentration in the diluted solution of 40% to 60% by mass and a kinematic viscosity at 30°C of 100 to 200 mm 2 /s is applied to the yarn to be stretched.
  • Patent Document 1 uses a diluted solution of a synthetic fiber treatment agent having a high water content, that is, a diluted solution of a synthetic fiber treatment agent having a low concentration of the synthetic fiber treatment agent, in a synthetic fiber spinning step. For this reason, when the yarn is heated to a predetermined temperature by the heating roller, a large amount of heat is consumed to evaporate the moisture in the diluted solution, and thus the thermal efficiency is poor. As a result, unevenness of thermal history during yarn stretching are likely to be induced, and there is a problem in dyeability of the yarn. When the contact length of the yarn with the heating roller is increased, the heat is sufficiently transferred to the yarn, and the problem of dyeability caused by unevenness of thermal history is resolved. However, the resulting problem is that the yarn has to be wound many times around a single heating roller, and thus the heating roller has to be increased in length in the axial direction, so that the workability of yarn winding becomes worse.
  • the problem to be solved by the present invention is to provide a diluted solution of a synthetic fiber treatment agent that can sufficiently prevent oil drop, ensures good spinnability, and can improve the yarn quality and dyeability of the obtained yarn in a spinning and stretching method in which the number of winding turns of the yarn on a heating roller is small, and also to provide a method for manufacturing a synthetic fiber that uses the diluted solution.
  • a diluted solution including a synthetic fiber treatment agent in a specific proportion range and having a viscosity within a specific range is surely suitable as a diluted solution of a synthetic fiber treatment agent used in a spinning and stretching step using a spinning and stretching machine equipped with a plurality of heating rollers, this step being a spinning and stretching method in which the yarn is wound around each heating roller more than 0 times and 3 or fewer times.
  • one aspect of the present invention is a diluted solution of a synthetic fiber treatment agent that contains a synthetic fiber treatment agent including a smoothing agent, a nonionic surfactant, and an antistatic agent, and a volatile diluent.
  • a synthetic fiber treatment agent including a smoothing agent, a nonionic surfactant, and an antistatic agent
  • a volatile diluent a volatile diluent.
  • the diluted solution has a kinematic viscosity at 30°C of greater than 0 mm 2 /s and less than 80 mm 2 /s.
  • the diluted solution is used in a spinning and stretching step using a spinning and stretching machine equipped with a plurality of heating rollers for stretching a spun yarn, this step being a spinning and stretching method in which the yarn is wound around each heating roller more than 0 times and 3 or fewer times.
  • the kinematic viscosity at 30°C of a non-volatile fraction in the diluted solution is preferably 10 to 70 mm 2 /s.
  • the kinematic viscosity at 30°C of the diluted solution is preferably 10 to 70 mm 2 /s.
  • the kinematic viscosity at 30°C of the diluted solution is preferably 20 to 65 mm 2 /s.
  • the proportion of the synthetic fiber treatment agent is preferably 65% to 98% by mass, and the proportion of the volatile diluent is preferably 2% to 35% by mass.
  • the proportion of the synthetic fiber treatment agent is preferably 70% to 95% by mass, and the proportion of the volatile diluent is preferably 5% to 30% by mass.
  • the proportion of the synthetic fiber treatment agent is preferably 75% to 92% by mass, and the proportion of the volatile diluent is preferably 8% to 25% by mass.
  • the volatile diluent preferably contains water.
  • the smoothing agent preferably contains a fatty acid ester having a total of 24 to 32 carbon atoms in a molecule.
  • the antistatic agent preferably contains at least one compound selected from a fatty acid salt, an organic phosphate, an organic sulfonate, an amphoteric compound, and a quaternary ammonium salt.
  • the proportion of the smoothing agent is 30% to 80% by mass
  • the proportion of the nonionic surfactant is 5% to 70% by mass
  • the proportion of the antistatic agent is 1% to 20% by mass.
  • a method for manufacturing a synthetic fiber according to another aspect of the present invention comprises a step of adhering the diluted solution of a synthetic fiber treatment agent to a synthetic fiber yarn so that the proportion of the synthetic fiber treatment agent to the yarn is 0.1% to 20% by mass, and a spinning and stretching step using a spinning and stretching machine equipped with a plurality of heating rollers for stretching a spun yarn, wherein the yarn is wound around each heating roller more than 0 times and 3 or fewer times.
  • the present invention succeeds in sufficiently preventing oil drop, ensuring good spinnability, and improving the yarn quality and dyeability of the obtained yarn.
  • the diluted solution of the present embodiment contains a synthetic fiber treatment agent including a smoothing agent, a nonionic surfactant, and an antistatic agent, and a volatile diluent.
  • a synthetic fiber treatment agent including a smoothing agent, a nonionic surfactant, and an antistatic agent, and a volatile diluent.
  • the diluted solution of the present embodiment has a kinematic viscosity at 30°C of greater than 0 mm 2 /s and less than 80 mm 2 /s and is used in a spinning and stretching step using a spinning and stretching machine equipped with a plurality of heating rollers for stretching a spun yarn, this step being a spinning and stretching method in which the yarn is wound around each heating roller more than 0 times and 3 or fewer times.
  • the synthetic fiber treatment agent to be used for the diluted solution of the present embodiment contains, as described above, a smoothing agent, a nonionic surfactant, and an antistatic agent.
  • the smoothing agent to be used for the synthetic fiber treatment agent for the diluted solution of the present embodiment is not particularly limited and examples thereof include: (1) ester compounds of aliphatic monohydric alcohols and aliphatic monocarboxylic acids, such as butyl stearate, octyl stearate, oleyl laurate, oleyl oleate, isopentacosanyl isostearate, octyl palmitate, octyl laurate, isotridecyl stearate, lauryl laurate, lauryl oleate, and lauryl stearate; (2) ester compounds of aliphatic polyhydric alcohols and aliphatic monocarboxylic acids, such as 1,6-hexanediol didecanate, glycerol trioleate, trimethylolpropane trioleate, and trimethylolpropane trilaurate; (3) ester compounds of aliphatic monohydric alcohols
  • the smoothing agent preferably contains a fatty acid ester having a total of 24 to 32 carbon atoms in the molecule, such as octyl stearate, oleyl laurate, octyl palmitate, isotridecyl stearate, lauryl laurate, lauryl oleate, lauryl stearate, 1,6-hexanediol didecanate, dilauryl adipate, or benzyl oleate.
  • a fatty acid ester having a total of 24 to 32 carbon atoms in the molecule, such as octyl stearate, oleyl laurate, octyl palmitate, isotridecyl stearate, lauryl laurate, lauryl oleate, lauryl stearate, 1,6-hexanediol didecanate, dilauryl adipate, or benzyl
  • the nonionic surfactant to be used for the synthetic fiber treatment agent for the diluted solution of the present embodiment is not particularly limited and examples thereof include: (1) compounds obtained by adding an alkylene oxide having 2 to 4 carbon atoms, such as ethylene oxide, propylene oxide, 1,2-butylene oxide, and 1,4-butylene oxide, to at least one kind of molecule selected from organic acids, organic alcohols, organic amines, and organic amides, such as polyoxyethylene laurate, polyoxyethylene oleate, polyoxyethylene methyl ether laurate, polyoxyethylene octyl ether laurate, bis polyoxyethylene lauryl ether adipate, polyoxyethylene dilaurate, polyoxyethylene dioleate, polyoxyethylene octyl ether, polyoxyethylene lauryl ether, polyoxyethylene isotridecyl ether, polyoxyethylene oleyl ether, polyoxypropylene lauryl ether, polyoxybutylene oleyl ether, polyoxyethylene polyoxy
  • the antistatic agent to be used for the synthetic fiber treatment agent for the diluted solution of the present embodiment is not particularly limited and examples thereof include: (1) fatty acid salts, such as potassium acetate, potassium octylate, and potassium oleate; (2) organic sulfonic acid salts, such as decane sulfonate potassium salt, alkyl (carbon number 12 to 15) sulfonate sodium salts, and tetradecane sulfonate sodium salt; (3) organic sulfuric acid salts, such as sodium dodecyl sulfate; (4) organic phosphoric acid salts, such as lauryl phosphoric acid ester potassium salt, oleyl phosphoric acid ester potassium salt, a salt of polyoxyethylene oleyl phosphoric acid ester and polyoxyethylene lauryl amino ether, and polyoxyethylene polyoxypropylene lauryl phosphoric acid ester potassium salt; (5) amphoteric compounds, such as octyldimethylammonia acetate
  • the antistatic agent preferably contains at least one compound selected from a fatty acid salt, an organic phosphoric acid salt, an organic sulfonic acid salt, an amphoteric compound, and a quaternary ammonium salt.
  • the proportion of the smoothing agent is 30% to 80% by mass
  • the proportion of the nonionic surfactant is 5% to 70% by mass
  • the proportion of the antistatic agent is 1% to 20% by mass.
  • the volatile diluent to be used in the diluted solution of the present embodiment is not particularly limited and examples thereof include water, organic solvents, and low viscosity mineral oils.
  • the organic solvents include hexane, ethanol, isopropanol, ethylene glycol, propylene glycol, diethyl ether, toluene, xylene, dimethylformamide, methyl ethyl ketone, and chloroform.
  • Specific examples of the low-viscosity mineral oils include mineral oils having a kinematic viscosity at 30°C of 5 mm 2 /s or less, and more specifically, paraffin having 11 to 13 carbon atoms (for example, trade name: N-Paraffin No.
  • the volatile diluent can be used singly or in a mixture of two or more within a compatibility range.
  • the volatile diluent preferably contains water.
  • the proportion of the synthetic fiber treatment agent is 60% by mass or more and less than 100% by mass, and the proportion of the volatile diluent is greater than 0% by mass and equal to or less than 40% by mass.
  • the proportion is preferably 65% to 98% by mass for the synthetic fiber treatment agent and 2% to 35% by mass for the volatile diluent, more preferably 70% to 95% by mass for the synthetic fiber treatment agent and 5% to 30% by mass for the volatile diluent, and even more preferably 75% to 92% by mass for the synthetic fiber treatment agent and 8% to 25% by mass for the volatile diluent.
  • the kinematic viscosity at 30°C of the diluted solution of the present embodiment is greater than 0 mm 2 /s and less than 80 mm 2 /s, preferably 10 to 70 mm 2 /s, and more preferably 20 to 65 mm 2 /s.
  • the kinematic viscosity was measured using a Cannon-Fenske viscometer (hereinafter the same).
  • the kinematic viscosity at 30°C of a non-volatile fraction in the diluted solution of the present embodiment is not particularly limited, but is preferably 10 to 70 mm 2 /s.
  • the non-volatile fraction means an absolutely dried product obtained by sufficiently removing the volatile diluent by heat-treating the diluted solution of the present embodiment at 105°C for 2 hours.
  • the diluted solution of the present embodiment may purposively contain other components, for example, an antifoaming agent (such as silicone compound and mineral oil), an antioxidant, a preservative, and a rust inhibitor.
  • an antifoaming agent such as silicone compound and mineral oil
  • an antioxidant such as silicone compound and mineral oil
  • a preservative such as a preservative
  • a rust inhibitor such as a rust inhibitor.
  • the amount of other components used can be specified within a range in which the effects of the present invention are not impaired, but is preferably as small as possible.
  • the diluted solution of the present embodiment is used in a spinning and stretching step using a spinning and stretching machine equipped with a plurality of heating rollers for stretching a spun yarn, this step being a spinning and stretching method in which the yarn is wound around each heating roller more than 0 times and 3 or fewer times.
  • the yarn supplied to the spinning and stretching machine is stretched by a plurality of rollers including two or more heating rollers. At this time, the yarn to be stretched is wound around each roller more than 0 times and 3 or fewer times.
  • winding more than 0 times and 3 or fewer times is inclusive of a state where the yarn is wound once, twice, or three times between the heating roller and the separation roller. Further, winding more than 0 times and less than 1 time is inclusive of a state of partial winding on the heating roller. In such a configuration, the workability of winding increases, but the heating length at the time of stretching becomes shorter than when winding more than 3 times.
  • the diluted solution of the synthetic fiber treatment agent is supplied in a high-concentration state to the yarn that has been wound around the heating roller more than 0 times and 3 or fewer times. Therefore, the amount of heat consumed for the evaporation of the volatile diluent is small, the yarn can be sufficiently heated even with a short heating length, and the yarn of excellent quality can be obtained. Moreover, because an appropriately low viscosity of the diluted solution of this embodiment can be maintained, oil drop during oiling can be prevented.
  • a second embodiment embodying a method for manufacturing a synthetic fiber according to the present invention (hereinafter referred to as manufacturing method) will be described hereinbelow.
  • the manufacturing method of the present embodiment includes a step of adhering the diluted solution of the synthetic fiber treatment agent of the first embodiment to a synthetic fiber yarn so that the proportion of the synthetic fiber treatment agent to the yarn is 0.1% to 20% by mass. Also included is a spinning and stretching step using a spinning and stretching machine equipped with a plurality of heating rollers for stretching a spun yarn, wherein the yarn is wound around each heating roller more than 0 times and 3 or fewer times.
  • a synthetic fiber to be adhered with the diluted solution of the present embodiment is not particularly limited and examples thereof include (1) polyester fibers, such as polyethylene terephthalate, polypropylene terephthalate, and polylactic acid esters, (2) polyamide fibers, such as Nylon 6 and Nylon 66, (3) polyacryl fibers, such as polyacryl and modacryl, (4) polyolefin fibers, such as polyethylene and polypropylene, and polyurethane fibers.
  • polyester fibers such as polyethylene terephthalate, polypropylene terephthalate, and polylactic acid esters
  • polyamide fibers such as Nylon 6 and Nylon 66
  • polyacryl fibers such as polyacryl and modacryl
  • polyolefin fibers such as polyethylene and polypropylene
  • polyurethane fibers it is preferable to use polyester fibers or polyamide fibers. In such a case, the effect of the present invention can be further enhanced.
  • a known method can be used for adhering the treatment agent of the present embodiment, and examples thereof include a roller oiling method, a guide oiling method using a metering pump, an immersion oiling method, and a spray oiling method. Among these, it is preferable to use the guide oiling method. When such an oiling method is used, the effect of the present invention can be further enhanced.
  • % means % by mass.
  • Test Category 1 Preparation of diluted solution of synthetic fiber treatment agent
  • a diluted solution of a synthetic fiber treatment agent of Example 1 was prepared by mixing a synthetic fiber treatment agent (P-1) at a proportion of 90% and water (D-1) as a volatile diluent at a proportion of 10%.
  • the synthetic fiber treatment agent included a smoothing agent (40% of lauryl oleate (L-1), 12% of octyl palmitate (L-2), and 15% of mineral oil (L-4) with a kinematic viscosity at 30°C of 47 mm 2 /s), a nonionic surfactant (4% of polyoxyethylene (added mole number of ethylene oxide (hereinafter the same) is 4 mol) oleyl ether (N-4), 3% of polyoxyethylene (4 mol) isotridecyl ether (N-5), 3% of polyoxyethylene (5 mol) lauryl ether (N-6), 6% of polyoxyethylene (3 mol) monooleate (N-7), 5% of polyoxyethylene (25 mol) hydrogenated castor oil
  • a diluted solution of a synthetic fiber treatment agent of each of Examples 2 to 8 and Comparative Examples 1 to 6 was prepared in the same manner as the diluted solution of a synthetic fiber treatment agent of Example 1.
  • the kinds of the smoothing agent, nonionic surfactant, and antistatic agent in each synthetic fiber treatment agent and the proportion of each component in the case where the total content of the components is taken as 100% are shown in Table 1 for the diluted solution of a synthetic fiber treatment agent of each examples and comparative examples prepared above.
  • Test Category 2 Measurement of kinematic viscosity of diluted solution of synthetic fiber treatment agent and non-volatile fraction thereof
  • the kinematic viscosity at 30°C of the diluted solution of the synthetic fiber treatment agent (P-1) prepared in Test Category 1 was 62 mm 2 /s as measured by the Cannon-Fenske method.
  • the kinematic viscosity at 30°C of the non-volatile fraction obtained by heat-treating the diluted solution of the synthetic fiber treatment agent (P-1) at 105°C for 2 hours and removing the volatile diluent was 48 mm 2 /s as measured by the Cannon-Fenske method.
  • Test Category 3 Manufacture and evaluation of synthetic fibers oiled with diluted solution of synthetic fiber treatment agent
  • Polyethylene terephthalate chips having an intrinsic viscosity of 0.64 and a titanium oxide content of 0.2% were dried by a conventional method, then spun at 295°C using an extruder, and discharged from a die and solidified by cooling. Thereafter, the diluted solution of a synthetic fiber treatment agent (P-1) prepared in Test Category 1 was adhered to the running yarn by the guide oiling method using a metering pump so that the proportion of the synthetic fiber treatment agent to the running yarn is 1.0%.
  • the fibers were collected by the guide, wound three times around the first roller heated to 90°C, and taken up at a rate of 1,400 m/min.
  • an 83.3 dtex (75 denier) 36-filament polyester fiber was manufactured by winding three times on a second roller heated to 130°C and rotating at a speed of 4,800 m/min, and stretching by a factor of 3.4 between the first roller and the second roller.
  • the amount of the synthetic fiber treatment agent adhered when the polyester fiber was manufactured, the oil drop at the oiling guide, the spinnability, the yarn quality, and the dyeability were measured and evaluated by the following methods. The results are shown in Table 2.
  • the dropping phenomenon of the diluted solution of a synthetic fiber treatment agent from the oiling guide was visually observed, the number of times the diluted solution was dropped per minute was measured 5 times, and the average value was evaluated according to the following criteria. The average value was rounded off to the nearest whole number.
  • the number of yarn breaks per ton of yarn when the polyester fiber was manufactured was measured 10 times, and the average value was evaluated according to the following criteria.
  • the Uster unevenness U% of the manufactured polyester fibers was evaluated at a yarn speed of 200 m/min using an Uster Tester UT-5 manufactured by Uster Technologies AG. The same evaluation was performed 5 times, and the evaluation was performed according to the following criteria from the results of each time.
  • a knitted fabric having a diameter of 70 mm and a length of 1.2 m was prepared from the manufactured polyester fiber with a cylindrical knitting machine.
  • the produced knitted fabric was dyed by a high-pressure dyeing method using a disperse dye (trade name Kayalon Polyester Blue EBL-E, manufactured by Nippon Kayaku Co., Ltd.).
  • the dyed knitted fabric was washed with water, reduction-washed, and dried in accordance with a conventional method (for example, Japanese Laid-Open Patent Publication No. 2015-124443 ), and then attached to an iron cylinder having a diameter of 70 mm and a length of 1 m.
  • the number of deeply dyed portions on the knitted fabric surface was counted with the naked eye and evaluated. The same evaluation was performed 5 times, and the average value of the number of the deeply dyed portion counted each time was evaluated according to the following criteria. The average value was rounded off to the nearest whole number.
  • Example 2 For Examples 2 to 8 and Comparative Examples 1 to 6, the polyester fibers were manufactured, and the adhered amount of the synthetic fiber treatment agent, oil drop, spinnability, yarn quality, and dyeability were evaluated in the same manner as in Example 1. The results are summarized in Table 2.

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Claims (14)

  1. Verdünnte Lösung eines Kunstfaserbehandlungsmittels, umfassend:
    ein Kunstfaserbehandlungsmittel, das ein Glättungsmittel, ein nichtionisches Tensid und ein Antistatikmittel einschließt; und
    ein flüchtiges Verdünnungsmittel, wobei wenn der Gesamtgehalt des Kunstfaserbehandlungsmittels und des flüchtigen Verdünnungsmittels in der verdünnten Lösung als 100 Massen% genommen wird, der Anteil des Kunstfaserbehandlungsmittels 60 Massen% oder mehr und weniger als 100 Massen% beträgt, und der Anteil des flüchtigen Verdünnungsmittels größer als 0 Massen% und gleich oder kleiner als 40 Massen% ist,
    die verdünnte Lösung eine kinematische Viskosität bei 30 °C im Bereich von mehr als 0 mm2/s bis 70 mm2/s hat, wie durch Messung an einem Cannon-Fenske-Viskometer bestimmt wird,
    wobei das Glättungsmittel ausgewählt ist aus mindestens einem oder mehreren der Gruppe bestehend aus Esterverbindungen von aliphatischen einwertigen Alkoholen und aliphatischen Monocarbonsäuren; Esterverbindungen von aliphatischen mehrwertigen Alkoholen und aliphatischen Monocarbonsäuren; Esterverbindungen von aliphatischen einwertigen Alkoholen und aliphatischen Polycarbonsäuren; Esterverbindungen von aromatischen einwertigen Alkoholen und aliphatischen Monocarbonsäuren; Esterverbindungen von aromatischen mehrwertigen Alkoholen und aliphatischen Monocarbonsäuren; Esterverbindungen von aliphatischen einwertigen Alkoholen und aromatischen Polycarbonsäuren; natürlichen Fetten und Ölen; und Mineralölen,
    wobei das nichtionische Tensid ausgewählt ist aus mindestens einem oder mehreren der Gruppe bestehend aus Verbindungen, die durch Addition eines Alkylenoxids mit 2 bis 4 Kohlenstoffatomen erhalten wurden; nichtionischen Tensiden vom Typ Partialester von mehrwertigem Alkohol; nichtionischen Tensiden vom Typ Fettsäureester von Polyoxyalkylen-mehrwertigem Alkohol; nichtionischen Tensiden vom Typ Fettsäureamid; nichtionischen Tensiden vom Typ Polyoxyalkylen-Fettsäureamid; höheren Fettsäuren; und höheren Alkoholen,
    wobei das Antistatikmittel ausgewählt ist aus mindestens einer oder mehreren der Gruppe bestehend aus Fettsäuresalzen; organischen Sulfonsäuresalzen; organischen Schwefelsäuresalzen; organischen Phosphorsäuresalzen; amphoteren Verbindungen; und quaternären Ammoniumsalzen,
    wobei das flüchtige Verdünnungsmittel ausgewählt ist aus mindestens einem oder mehreren der Gruppe bestehend aus Wasser; organischen Lösungsmitteln; und Mineralölen mit niedriger Viskosität.
  2. Verdünnte Lösung eines Kunstfaserbehandlungsmittels nach Anspruch 1, wobei die kinematische Viskosität einer nicht-flüchtigen Fraktion in der verdünnten Lösung bei 30 °C 10 bis 70 mm2/s beträgt.
  3. Verdünnte Lösung eines Kunstfaserbehandlungsmittels nach Anspruch 1 oder 2, wobei die kinematische Viskosität der verdünnten Lösung bei 30 °C im Bereich von 10 bis 70 mm2/s liegt.
  4. Verdünnte Lösung eines Kunstfaserbehandlungsmittels nach Anspruch 1 oder 2, wobei die kinematische Viskosität der verdünnten Lösung bei 30 °C größer als 0 mm2/s bis 65 mm2/s ist.
  5. Verdünnte Lösung eines Kunstfaserbehandlungsmittels nach einem der Ansprüche 1 bis 4, wobei die kinematische Viskosität der verdünnten Lösung bei 30 °C im Bereich von 20 bis 65 mm2/s liegt.
  6. Verdünnte Lösung eines Kunstfaserbehandlungsmittels nach einem der Ansprüche 1 bis 5, wobei, wenn der Gesamtgehalt des Kunstfaserbehandlungsmittels und des flüchtigen Verdünnungsmittels in der verdünnten Lösung als 100 Massen% genommen wird, der Anteil des Kunstfaserbehandlungsmittels 65 Massen% bis 98 Massen% beträgt und der Anteil des flüchtigen Verdünnungsmittels 2 Massen% bis 35 Massen% beträgt.
  7. Verdünnte Lösung eines Kunstfaserbehandlungsmittels nach Anspruch 6, wobei der Anteil des Kunstfaserbehandlungsmittels 70 Massen% bis 95 Massen% beträgt, und der Anteil des flüchtigen Verdünnungsmittels 5 Massen% bis 30 Massen% beträgt.
  8. Verdünnte Lösung eines Kunstfaserbehandlungsmittels nach Anspruch 6, wobei der Anteil des Kunstfaserbehandlungsmittels 75 Massen% bis 92 Massen% beträgt, und der Anteil des flüchtigen Verdünnungsmittels 8 Massen% bis 25 Massen% beträgt.
  9. Verdünnte Lösung eines Kunstfaserbehandlungsmittels nach einem der Ansprüche 1 bis 8, wobei das flüchtige Verdünnungsmittel Wasser enthält.
  10. Verdünnte Lösung eines Kunstfaserbehandlungsmittels nach einem der Ansprüche 1 bis 9, wobei das Glättungsmittel einen Fettsäureester mit insgesamt 24 bis 32 Kohlenstoffatomen in einem Molekül enthält.
  11. Verdünnte Lösung eines Kunstfaserbehandlungsmittels nach einem der Ansprüche 1 bis 10, wobei das Antistatikmittel mindestens eine Verbindung ausgewählt aus einem Fettsäuresalz, einem organischen Phosphat, einem organischen Sulfonat, einer amphoteren Verbindung und einem quaternären Ammoniumsalz enthält, wobei die amphotere Verbindung ausgewählt ist aus mindestens einem oder mehreren der Gruppe bestehend aus Octyldimethylammoniumacetat; N,N-Bis(2-carboxyethyl)-octylamin-Natrium und N-Oleyl-N'-carboxylethyl-N'-hydroxyethyl-ethylendiamin-Natrium.
  12. Verdünnte Lösung eines Kunstfaserbehandlungsmittels nach einem der Ansprüche 1 bis 11, wobei, wenn der Gesamtgehalt des Glättungsmittels, des nichtionischen Tensids und des Antistatikmittels in dem Kunstfaserbehandlungsmittel als 100 Massen% genommen wird, der Anteil des Glättungsmittels 30 Massen% bis 80 Massen% beträgt, der Anteil des nichtionischen Tensids 5 Massen% bis 70 Massen% beträgt, und der Anteil des Antistatikmittels 1 Massen% bis 20 Massen% beträgt.
  13. Verfahren zum Fertigen einer Kunstfaser, umfassend:
    einen Schritt des Anhaftens der verdünnten Lösung eines Kunstfaserbehandlungsmittels nach einem der Ansprüche 1 bis 12 an ein Kunstfasergarn, so dass der Anteil des Kunstfaserbehandlungsmittels zu dem Garn 0,1 Massen% bis 20 Massen% beträgt, und
    einen Spinn- und Streckschritt unter Verwendung einer Spinn- und Streckmaschine, die mit einer Vielzahl von Heizwalzen zum Strecken eines gesponnenen Garns ausgestattet ist, wobei das Garn mehr als 0 Mal und 3 oder weniger Male um jede Heizwalze gewickelt wird.
  14. Verwendung einer verdünnten Lösung eines Kunstfaserbehandlungsmittels nach einem der Ansprüche 1 bis 12 in einem Spinn- und Streckschritt unter Verwendung einer Spinn- und Streckmaschine, die mit einer Vielzahl von Heizwalzen zum Strecken eines gesponnenen Garns ausgestattet ist, wobei dieser Schritt ein Spinn- und Streckverfahren ist, bei dem das Garn mehr als 0 Mal und 3 oder weniger Male um jede Heizwalze gewickelt wird.
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