WO2016132877A1 - Procédé permettant de produire une fibre acrylique - Google Patents

Procédé permettant de produire une fibre acrylique Download PDF

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Publication number
WO2016132877A1
WO2016132877A1 PCT/JP2016/052936 JP2016052936W WO2016132877A1 WO 2016132877 A1 WO2016132877 A1 WO 2016132877A1 JP 2016052936 W JP2016052936 W JP 2016052936W WO 2016132877 A1 WO2016132877 A1 WO 2016132877A1
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WO
WIPO (PCT)
Prior art keywords
mass
acrylic copolymer
acrylic
spinning
fiber
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Application number
PCT/JP2016/052936
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English (en)
Japanese (ja)
Inventor
吉村悟
穴原賢
Original Assignee
株式会社カネカ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社カネカ filed Critical 株式会社カネカ
Priority to CN201680010507.2A priority Critical patent/CN107250449B/zh
Publication of WO2016132877A1 publication Critical patent/WO2016132877A1/fr
Priority to US15/673,494 priority patent/US20170335491A1/en

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Classifications

    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/40—Modacrylic fibres, i.e. containing 35 to 85% acrylonitrile
    • 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
    • D01D5/06—Wet spinning methods
    • 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
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties

Definitions

  • the present invention relates to a method for producing an acrylic fiber by wet-spinning a spinning stock solution obtained by dissolving an acrylic copolymer obtained by copolymerizing acrylonitrile, vinyl chloride and a sulfonic acid group-containing monomer in dimethyl sulfoxide.
  • Acrylic fibers especially acrylic fibers made of an acrylic copolymer containing vinyl chloride or vinylidene chloride as one of the copolymer components, are used for artificial hair used in hair ornaments such as wigs, hairpieces, and weavings because of their soft touch. It is suitably used as a fiber.
  • acrylic fibers used as artificial hair are produced by wet spinning using a spinning stock solution obtained by dissolving an acrylic copolymer in a good solvent such as dimethyl sulfoxide.
  • Patent Document 1 describes that an acrylic fiber made of an acrylic copolymer composed of acrylonitrile, vinylidene chloride, and a sulfonic acid group-containing vinyl monomer is described by a wet spinning method using a good solvent. ing.
  • Patent Document 1 Although vinylidene chloride is used as one of the components copolymerized with acrylonitrile, there is a problem that the curl setting property by hot water is poor. Therefore, vinyl chloride is used as one of the components copolymerized with acrylonitrile in order to enhance the curl setting property by hot water.
  • the inventors of the present invention use a highly safe dimethyl sulfoxide as a good solvent and spin a solution obtained by dissolving an acrylic copolymer obtained by copolymerizing acrylonitrile, vinyl chloride, and a sulfonic acid group-containing monomer in dimethyl sulfoxide. It has been found that when an acrylic fiber is produced by wet spinning the stock solution, there is a problem that the acrylic fiber is colored yellow or brown.
  • the present invention suppresses coloring of the resulting acrylic fiber even when wet spinning a spinning stock solution in which an acrylic copolymer containing vinyl chloride as a copolymerization component is dissolved in dimethyl sulfoxide.
  • a method for producing an acrylic fiber that can be used.
  • the present invention relates to a method for producing an acrylic fiber in which a spinning stock solution obtained by dissolving an acrylic copolymer in an organic solvent is wet-spun, and the acrylic copolymer is based on the total mass of the acrylic copolymer. 20% to 85% by weight of acrylonitrile, 14.5% to 79.5% by weight of vinyl chloride, and 0.5% to 10% by weight of the sulfonic acid group-containing monomer, and the organic solvent is dimethyl sulfoxide,
  • the spinning dope includes water and a condensed phosphate, and relates to a method for producing an acrylic fiber.
  • the spinning dope preferably contains 0.05 to 5% by mass of condensed phosphate with respect to the total mass of the acrylic copolymer.
  • the condensed phosphate is preferably at least one compound selected from the group consisting of pyrophosphate, tripolyphosphate, tetrapolyphosphate, trimetaphosphate and tetrametaphosphate, and is a tripolyphosphate. It is more preferable.
  • an acrylic fiber in which coloring to a yellow or brown color is suppressed even when a spinning stock solution in which an acrylic copolymer containing vinyl chloride as a copolymerization component is dissolved in dimethyl sulfoxide is wet-spun. be able to.
  • the inventors of the present invention wet-spun a spinning stock solution in which an acrylic copolymer containing acrylonitrile, vinyl chloride and a sulfonic acid group-containing monomer is dissolved in dimethyl sulfoxide (DMSO), the acrylic fiber is yellow or yellow.
  • DMSO dimethyl sulfoxide
  • acrylonitrile, vinyl chloride, and acrylic acid copolymerized with sulfonic acid group-containing monomers are used. It has been found that the coloring of acrylic fibers to yellow and brown can be suppressed by adding condensed phosphate together with water to a spinning stock solution in which a copolymer is dissolved in dimethyl sulfoxide and performing wet spinning.
  • the acrylic copolymer contains 20 to 85% by mass of acrylonitrile, 14.5 to 79.5% by mass of vinyl chloride, and a sulfonic acid group-containing monomer with respect to the total mass of the acrylic copolymer. Contains 0.5 to 10% by mass.
  • the acrylic copolymer if the vinyl chloride content is 14.5 to 79.5% by mass, the flame retardancy is good.
  • the acrylic copolymer when the acrylonitrile content is 20 to 85% by mass, the heat resistance is improved, and the processing temperature during curl setting can be set appropriately.
  • the acrylic copolymer contains the sulfonic acid group-containing monomer in an amount of 0.5 to 10% by mass, the hydrophilicity increases and the void ratio decreases.
  • the acrylic copolymer includes 20 to 80% by mass of acrylonitrile, 19.5 to 79.5% by mass of vinyl chloride, and 0.5 to 5% by mass of a sulfonic acid group-containing monomer. More preferably, it contains 20 to 75% by mass of acrylonitrile, 24.5 to 79.5% by mass of vinyl chloride, and 0.5 to 5% by mass of a sulfonic acid group-containing monomer.
  • the sulfonic acid group-containing monomer is not particularly limited, and examples thereof include allyl sulfonic acid, methallyl sulfonic acid, styrene sulfonic acid, isoprene sulfonic acid, 2-acrylamido-2-methylpropane sulfonic acid, and sodium salts thereof.
  • Such metal salts and amine salts can be used.
  • the said sulfonic acid group containing monomer can be used individually or in combination of 2 or more types.
  • the above acrylic copolymer is dissolved in dimethyl sulfoxide.
  • Use of dimethyl sulfoxide as the organic solvent increases safety.
  • the spinning dope preferably contains 0.05 mass% or more of the condensed phosphate with respect to the total mass of the acrylic copolymer, and is 0.06 mass. % Or more, more preferably 0.07% by mass or more.
  • the upper limit of the condensed phosphate is preferably 5% by mass or less and preferably 4.5% by mass or less of the condensed phosphate with respect to the total mass of the acrylic copolymer from the viewpoint of coloring prevention and spinnability. Is more preferably 4% by mass or less, further preferably 3.5% by mass or less, further preferably 3% by mass or less, further preferably 2.5% by mass or less, and further preferably 2% by mass. %, More preferably 1.5% by mass or less, further preferably 1% by mass or less, further preferably 0.9% by mass or less, and 0.7% by mass or less. Is more preferable, and more preferably 0.5% by mass or less is included.
  • the condensed phosphate is not particularly limited as long as it is an inorganic condensed phosphate.
  • pyrophosphate, tripolyphosphate, tetrapolyphosphate, trimetaphosphate, and tetrametaphosphate can be used.
  • tripolyphosphate is preferable from the viewpoint of availability and high solubility.
  • the kind of salt is not particularly limited, and may be any salt such as sodium salt, potassium salt, and ammonium salt. From the viewpoint of excellent solubility in water, the salt is preferably a water-soluble salt such as a sodium salt or a potassium salt.
  • pyrophosphate also referred to as diphosphate
  • examples of pyrophosphate include sodium pyrophosphate and potassium pyrophosphate.
  • tripolyphosphate examples include sodium tripolyphosphate, aluminum dihydrogen phosphate, potassium tripolyphosphate, and the like.
  • tetrapolyphosphate examples include sodium tetrapolyphosphate and potassium tetrapolyphosphate.
  • the spinning dope preferably contains 8 to 16% by mass of water, and preferably 8 to 15% by mass with respect to the total mass of the acrylic copolymer. More preferably, it is contained in an amount of 8 to 14% by mass, more preferably 8 to 13% by mass, and further preferably 8 to 12.5% by mass.
  • the acrylic copolymer is 20 to 30% by mass and DMSO is 65.2 to 78.49% by mass with respect to the total mass of the spinning dope.
  • % Water 1.5 to 4.8% by mass, and condensed phosphate 0.01 to 1.5% by mass, more preferably 22 to 30% by mass of acrylic copolymer, DMSO 66 to 75.99% by mass, water 2 to 4% by mass, condensed phosphate 0.01 to 1.5% by mass, and more preferably acrylic copolymer 25 to 30% by mass, It contains 66.5 to 72.49% by weight of DMSO, 2.5 to 3.5% by weight of water, and 0.01 to 1.5% by weight of condensed phosphate.
  • the above spinning dope may contain other additives for improving the fiber characteristics, if necessary, as long as the effects of the present invention are not impaired.
  • the additives include gloss modifiers such as esters and ethers of cellulose derivatives such as titanium dioxide, silicon dioxide, and cellulose acetate, colorants such as organic pigments, inorganic pigments, and dyes, and improved light resistance and heat resistance. And stabilizers for the above.
  • the spinning dope is not particularly limited, but can be prepared by mixing an acrylic copolymer, DMSO, water, and condensed phosphate.
  • the spinning solution is preferably prepared by mixing an acrylic copolymer, DMSO, and an aqueous solution of condensed phosphate.
  • an aqueous solution of DMSO and condensed phosphate is added to the acrylic copolymer, and then stirred at 40 to 80 ° C. for 3 to 12 hours to prepare a spinning dope. It is preferable to stir at 50 to 75 ° C. for 4 to 10 hours, more preferably at 60 to 70 ° C. for 5 to 8 hours.
  • an acrylic copolymer containing moisture (hereinafter, also simply referred to as a water-containing acrylic copolymer) is used as the acrylic copolymer, what is the total mass of the acrylic copolymer?
  • the dry weight of the acrylic copolymer refers to the dry weight of the acrylic polymer obtained by drying the water-containing acrylic copolymer at 60 ° C. for 10 hours and measuring the mass after removing moisture.
  • DMSO DMSO containing water may be used.
  • an acrylic copolymer refers to an acrylic copolymer that does not contain moisture
  • DMSO refers to DMSO that does not contain moisture.
  • Acrylic fibers are obtained by wet-spinning the above spinning stock solution by a usual method.
  • the above spinning solution is discharged through a spinning nozzle or directly into a coagulating liquid (coagulating bath) made of an aqueous solution of DMSO to coagulate and fiberize.
  • a coagulating liquid coagulating bath
  • an aqueous solution of DMSO having a DMSO concentration of 40 to 70 mass% can be used, and the temperature can be set to 5 to 40 ° C. If the concentration of a good solvent such as DMSO in the coagulation bath is too low, coagulation is accelerated, the coagulation structure becomes rough, and voids tend to form inside the fiber.
  • the fiber (coagulated yarn) is led to an aqueous solution of DMSO of 30 ° C or higher or warm water of 30 ° C or higher, which has a DMSO concentration lower than that of the coagulated liquid, and is subjected to solvent removal, washing and stretching, and if necessary, relaxation after stretching. You may do it.
  • the draw ratio is not particularly limited, but is preferably 2 to 8 times, more preferably 2 to 7 times, and further preferably 2 to 6 times from the viewpoint of increasing the strength and productivity of the fiber. preferable.
  • hydrochloric acid can be generated by the dehydrochlorination reaction of the acrylic copolymer. Hydrogen ions) are used for equilibrium reactions with phosphate groups derived from condensed phosphates, and it is assumed that DMSO is prevented from being decomposed by hydrochloric acid, and the fibers are suppressed from being colored yellow or brown.
  • the fiber (drawn yarn) may be dried.
  • an oil agent may be attached as necessary.
  • the oil agent may be any oil agent as long as it is usually used for the purpose of preventing static electricity, preventing fiber sticking and improving the texture in the spinning process, and a known oil agent can be used.
  • the drying temperature is not particularly limited, but is, for example, 110 to 190 ° C., preferably 110 to 160 ° C.
  • the dried fiber may be further stretched if necessary, and the stretch ratio is preferably 1 to 4 times.
  • the total stretching ratio including stretching before drying is preferably 2 to 12 times.
  • the fiber obtained by further stretching after drying or drying is further subjected to a relaxation treatment of 15% or more.
  • the relaxation treatment can be performed in a dry heat or superheated steam atmosphere at a high temperature, for example, 150 to 200 ° C., preferably 150 to 190 ° C.
  • it can be carried out in a pressurized steam or heated and pressurized steam atmosphere of 0.05 to 0.4 MPa, preferably 0.1 to 0.4 MPa at 120 to 180 ° C.
  • the single fiber fineness of the acrylic fiber is preferably 30 to 100 dtex, more preferably 40 to 80 dtex, and still more preferably 45 to 70 dtex from the viewpoint of suitable use as artificial hair.
  • the single fiber fineness means an average value of fineness of any 100 single fibers.
  • the acrylic fiber may contain phosphorus derived from condensed phosphate.
  • phosphorus may be included in an amount of 5 to 250 ppm, 10 to 150 ppm, or 15 to 80 ppm based on the total mass of the acrylic fiber. Phosphorus quantification can be performed as described below.
  • Example 1 ⁇ Spinning stock solution>
  • 500 g of an acrylic copolymer composed of 45.7% by mass of acrylonitrile, 52.3% by mass of vinyl chloride, and 2.0% by mass of sodium styrenesulfonate, 1223 g of DMSO, and the concentration 62.5 g of an aqueous solution of 0.61% by mass sodium tripolyphosphate was added, respectively, and stirred at 70 ° C. for 12 hours to dissolve the acrylic copolymer to prepare a spinning dope.
  • ⁇ Spinning conditions> The obtained spinning solution was wet spun at a spinning speed of 2 m / min in a coagulation bath of a DMSO aqueous solution at 20 ° C. and 57% by mass using a spinning nozzle (pore diameter 0.3 mm, number of holes 50), and then 80 ° C.
  • the film was stretched 3 times in a stretching bath of a 50 mass% DMSO aqueous solution. Subsequently, after washing with warm water of 90 ° C., drying at 140 ° C., stretching twice, and applying a 20% relaxation treatment at 160 ° C., an acrylic fiber having a single fiber fineness of about 46 dtex is obtained. It was.
  • Example 2 The single fiber fineness was about 46 dtex in the same manner as in Example 1 except that an aqueous solution of sodium tripolyphosphate having a concentration of 1.22% by mass was used instead of the aqueous solution of sodium tripolyphosphate having a concentration of 0.61% by mass. An acrylic fiber was obtained.
  • Example 3 The single fiber fineness was about 46 dtex in the same manner as in Example 1 except that an aqueous solution of sodium tripolyphosphate having a concentration of 2.44% by mass was used instead of the aqueous solution of sodium tripolyphosphate having a concentration of 0.61% by mass. An acrylic fiber was obtained.
  • Example 4 The single fiber fineness was about 46 dtex in the same manner as in Example 1 except that an aqueous solution of sodium tripolyphosphate having a concentration of 3.66% by mass was used instead of the aqueous solution of sodium tripolyphosphate having a concentration of 0.61% by mass. An acrylic fiber was obtained.
  • Example 5 The single fiber fineness was about 46 dtex in the same manner as in Example 1 except that an aqueous solution of sodium pyrophosphate having a concentration of 1.22% by mass was used instead of the aqueous solution of sodium tripolyphosphate having a concentration of 0.61% by mass. An acrylic fiber was obtained.
  • Example 6 The single fiber fineness is about the same as in Example 1 except that an aqueous solution of sodium tetrapolyphosphate having a concentration of 1.22% by mass was used instead of the aqueous solution of sodium tripolyphosphate having a concentration of 0.61% by mass. A 46 dtex acrylic fiber was obtained.
  • Example 1 An acrylic fiber having a single fiber fineness of about 46 dtex was obtained in the same manner as in Example 1 except that pure water was used instead of the aqueous solution of sodium tripolyphosphate having a concentration of 0.61% by mass.
  • the hues of the acrylic fibers of Examples 1 to 6 and Comparative Examples 1 and 2 were measured by the following colorimetry method, and the results are shown in Table 1 below. Further, the phosphorus content in the acrylic fibers of Examples 1 to 6 and Comparative Examples 1 and 2 was measured by the following phosphorus determination method, and the results are shown in Table 1 below. Table 1 below also shows the blending amount of condensed phosphate and the blending amount of water with respect to the total mass of the acrylic copolymer in the spinning dope.
  • CM-2600d manufactured by Konica Minolta Co., Ltd.
  • diffuse illumination 10 ° diffuse illumination 10 °
  • light receiving method D65 Color measurement was performed at arbitrary four locations under the conditions of a measurement diameter of ⁇ 8 mm and the SCE method, and an average value of these measurement values was obtained to obtain a hue.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Artificial Filaments (AREA)

Abstract

La présente invention se rapporte à un procédé permettant de produire une fibre acrylique, selon lequel une solution de matière première de filage obtenue par dissolution d'un copolymère acrylique dans un solvant organique est soumise à un filage humide. Le copolymère acrylique contient entre 20 et 85 % en masse d'acrylonitrile, entre 14,5 et 79,5 % en masse de chlorure de vinyle et entre 0,5 et 10 % en masse d'un monomère contenant un groupe acide sulfonique par rapport à la masse totale du copolymère acrylique ; le solvant organique est le diméthylsulfoxyde ; et la solution de matière première de filage contient de l'eau et un phosphate condensé.
PCT/JP2016/052936 2015-02-16 2016-02-01 Procédé permettant de produire une fibre acrylique WO2016132877A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201680010507.2A CN107250449B (zh) 2015-02-16 2016-02-01 丙烯酸系纤维的制造方法
US15/673,494 US20170335491A1 (en) 2015-02-16 2017-08-10 Method for producing acrylic fiber

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JP2015027998 2015-02-16
JP2015-027998 2015-02-16

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017164299A1 (fr) * 2016-03-25 2017-09-28 株式会社カネカ Fibre acrylique pour cheveux artificiels, son procédé de production, et article de décoration de tête la contenant
CN112251824B (zh) * 2020-09-21 2023-03-28 吉林富博纤维研究院有限公司 一种聚丙烯腈纤维的制备工艺及聚丙烯腈纤维

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CN107250449A (zh) 2017-10-13
US20170335491A1 (en) 2017-11-23
TW201638408A (zh) 2016-11-01
CN107250449B (zh) 2020-09-15

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