WO2014033816A1 - Fibre dotée d'une section transversale composite de type île et mer et procédé de production de ladite fibre - Google Patents

Fibre dotée d'une section transversale composite de type île et mer et procédé de production de ladite fibre Download PDF

Info

Publication number
WO2014033816A1
WO2014033816A1 PCT/JP2012/071604 JP2012071604W WO2014033816A1 WO 2014033816 A1 WO2014033816 A1 WO 2014033816A1 JP 2012071604 W JP2012071604 W JP 2012071604W WO 2014033816 A1 WO2014033816 A1 WO 2014033816A1
Authority
WO
WIPO (PCT)
Prior art keywords
sea
island
polyester
composite cross
fiber
Prior art date
Application number
PCT/JP2012/071604
Other languages
English (en)
Japanese (ja)
Inventor
高永　秀敏
順一 溝田
健明 河野
隆史 井田
則雄 鈴木
弘和 小松
Original Assignee
東レ株式会社
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 東レ株式会社 filed Critical 東レ株式会社
Priority to PCT/JP2012/071604 priority Critical patent/WO2014033816A1/fr
Publication of WO2014033816A1 publication Critical patent/WO2014033816A1/fr

Links

Images

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
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • 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
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent

Definitions

  • the present invention relates to a sea-island composite cross-section fiber. More specifically, the present invention relates to a sea-island composite cross-sectional fiber suitable for obtaining ultrafine polyamide fibers.
  • Polyamide fiber typified by polycaproamide and polyhexamethylene adipamide, and polyester fiber typified by polyethylene terephthalate and polybutylene terephthalate are excellent in mechanical properties and dimensional stability. Widely used in interior and industrial applications.
  • the spinneret design should be used for fibers with a single yarn diameter of micron. It can also be obtained by melt spinning with a single polymer focusing on the main point, but for ultrafine fibers, composite spinning with a readily soluble polymer to obtain a composite cross-section fiber, dissolving and removing the easily soluble polymer It is the mainstream to get.
  • Patent Documents 1 and 3 a polyester-based sea-island composite fiber using an alkali-soluble copolymer polyester
  • Patent Document 2 a sea-island composite fiber using an alkali-soluble copolymer polyester and nylon 66
  • the copolymer polyester described in Patent Documents 1 to 3 is a sea-island type composite fiber having a sea component and polyamide as an island component, it is a combination of polymers having poor compatibility, so that the composite interface easily peels off, and fluff There was a problem that the problem of sporadic was likely to occur.
  • sea-island composite fiber for obtaining ultrafine fibers having an average single fiber fineness of 0.001 dtex or more and 0.5 dtex or less
  • polyethylene terephthalate copolymerized with sodium 5-sulfoisophthalate and PET sea-island fiber (patent document) 4) is disclosed.
  • the copolymer polyester described in Patent Document 4 is used as a sea component and a sea-island type composite cross-section fiber using polyamide as an island component instead of PET is a combination of polymers having poor compatibility, the composite interface peels off. It was easy to do, and the problem that the fluff scattered was generated, and the yarn-making property was inferior. Furthermore, time reduction (cost reduction) of the dissolution and removal process is also demanded.
  • the present invention solves the conventional problems as described above, and suppresses peeling of the composite interface at the time of spinning, which has been a problem because the polyester used as a sea component has poor affinity with the polyamide of the island component. It is possible to provide a sea-island type composite cross-section fiber that can greatly improve fluff and yarn breakage, has a high alkali dissolution rate, and is industrially advantageous. It is another object of the present invention to provide an ultrafine polyamide fiber obtained by dissolving and removing the polyester contained in the sea-island composite cross-section fiber of the present invention.
  • the main repeating unit is composed of ethylene terephthalate, the isophthalic acid component containing a metal sulfonate group is 2.0 to 5.5 mol% with respect to the total acid component, and the adipic acid component with respect to the total acid component is 3.0 to
  • a sea-island type composite cross-section fiber comprising 6.0 mol% of an alkali-eluting polyester as a sea component and polyamide as an island component.
  • the main repeating unit is composed of ethylene terephthalate, 2.0 to 5.5 mol% of the isophthalic acid component containing a metal sulfonate group with respect to the total acid component, and 3.0 to of the adipic acid component with respect to the total acid component
  • a method for producing a sea-island type composite cross-section fiber comprising melt-spinning an alkali-eluting polyester containing 6.0 mol% as a sea component and polyamide as an island component.
  • (6) The method for producing a sea-island type composite cross-section fiber according to (5), wherein the polyamide has an amino terminal group amount of 5 ⁇ 10 ⁇ 5 to 5.5 ⁇ 10 ⁇ 5 mol / g.
  • the sea-island composite cross-section fiber according to any one of (1) to (4) or the sea-island composite cross-section fiber obtained by the method for producing the sea-island type composite cross-section fiber according to any one of (5) to (7) An ultrafine polyamide fiber formed by dissolving and removing the polyester by alkali treatment.
  • the polyester contained in the sea-island type composite cross-section fiber is copolymerized with an isophthalic acid component containing a metal sulfonate group, and further copolymerized with an adipic acid component, thereby releasing the composite interface during yarn production. It is possible to suppress the fluff, breakage of yarn, etc., and further, an island-in-sea type composite cross-section fiber that has a high alkali dissolution rate, shortens the dissolution treatment time, and is industrially advantageous can be obtained.
  • the sea-island composite cross-sectional fiber of the present invention is a sea-island composite cross-sectional fiber in which an alkali-eluting polyester is a sea component and polyamide is an island component.
  • the polyamide used in the present invention is a resin composed of a high molecular weight substance in which a so-called hydrocarbon group is connected to the main chain through an amide bond, and such a polyamide has excellent dyeability and mechanical properties, and is an alkali. It is preferably composed mainly of polycaproamide (nylon 6), which is suitable for composite melt spinning with easily eluting polyester.
  • polycaproamide nylon 6
  • “mainly” means that 80 mol% or more, more preferably 90 mol% or more, of all monomer units as ⁇ -caprolactam units constituting polycaproamide.
  • Examples of other components include, but are not limited to, polydodecanoamide, polyhexamethylene adipamide, polyhexamethylene azelamide, polyhexamethylene sebamide, polyhexamethylene dodecanoamide, polymetaxylylene adipa
  • Examples thereof include units such as aminocarboxylic acid, dicarboxylic acid, and diamine, which are monomers constituting imide, polyhexamethylene terephthalamide, polyhexamethylene isophthalamide and the like.
  • the degree of polymerization of polyamide depends on the requirements of sea-island composite cross-section fibers, ultra-fine polyamide fibers obtained by dissolving and removing alkali-elutable polyester contained in sea-island composite cross-section fibers, or fabrics and textile products using the same.
  • Properties, or an appropriate range for obtaining them stably may be selected as appropriate, but is preferably in the range of 2.0 to 3.6 with 98% sulfuric acid relative viscosity at 25 ° C., more preferably 2 The range is from 4 to 3.3.
  • the polyester used for the sea component of the sea-island composite cross-section fiber of the present invention is based on polyethylene terephthalate obtained after esterification or transesterification of dicarboxylic acid or its ester-forming derivative and diol or its ester-forming derivative.
  • the polyethylene terephthalate contains 2.0 to 5.5 mol% of an isophthalic acid component containing a metal sulfonate group with respect to the total acid component, and 3.0 to 6.0 mol% of an adipic acid component with respect to the total acid component. It is a leachable polyester.
  • the alkali-eluting polyester It is essential for the alkali-eluting polyester to contain 3.0 to 6.0 mol% of the adipic acid component with respect to the total acid component in order to have alkali elution and affinity with polyamide.
  • the adipic acid component is more preferably from 3.5 to 5.5 mol%, most preferably from 4.0 to 5.5 mol%, based on the total acid component.
  • 3.0 mol% the color tone and heat resistance of the resulting polyester are good, but peeling at the composite interface occurs, and the elution to alkali is also reduced. If the amount is more than 6.0 mol%, the heat resistance of the resulting polyester is inferior, so that the yarn-making property is poor.
  • adipic acid or an ester-forming derivative of adipic acid is used as the monomer constituting the adipic acid component in the alkali-eluting polyester.
  • adipic acid-forming derivative adipic acid-forming derivatives such as methyl ester, ethyl ester, isopropyl ester, and ethylene glycol ester can be used.
  • the adipic acid component is preferably adipic acid or dimethyl adipate from the viewpoint of easy procurement of raw materials.
  • the alkali-elutable polyester It is essential for the alkali-elutable polyester to contain 2.0 to 5.5 mol% of an isophthalic acid component containing a metal sulfonate group with respect to the total acid component in order to have good alkali elution.
  • the isophthalic acid component containing a metal sulfonate group is more preferably 2.0 to 4.0 mol%, most preferably 2.0 mol% to 3.0 mol%.
  • the amount is less than 2.0 mol%, the color tone and heat resistance of the resulting polyester are good, but the elution property to alkali decreases.
  • it is more than 5.5 mol% the heat resistance of the resulting polyester is inferior, so that the yarn-making property is deteriorated.
  • an isophthalic acid component containing a metal sulfonate group of an alkali-eluting polyester a known isophthalic acid component containing a metal sulfonate group can be used. Dimethyl isophthalate.
  • the alkali-eluting polyester preferably contains 3 to 10 ppm of a titanium compound soluble in polyester in terms of titanium element. More preferably, it is 4 to 8 ppm.
  • the amount is less than 3 ppm in terms of titanium element, the polymerization reaction activity is insufficient, the reaction is delayed, and the resulting polyester is colored yellowish.
  • the amount is more than 10 ppm in terms of titanium element, the polymerization reaction activity is good, but the color tone and heat resistance of the polyester obtained due to high activity deteriorate.
  • the titanium compound soluble in the alkali-eluting polyester is preferably a titanium complex.
  • the chelating agent that forms the complex include polyhydric alcohols, polycarboxylic acids, hydroxycarboxylic acids, and nitrogen-containing carboxylic acids. These are preferably used, and one or more of them are preferably used from the viewpoint of the color tone and heat resistance of the obtained polyester.
  • Polyhydric carboxylic acids include phthalates. Acid, trimellitic acid, trimesic acid, hemititic acid, pyromellitic acid and the like, hydroxycarboxylic acid includes lactic acid, malic acid, tartaric acid, citric acid, and the like, and nitrogen-containing carboxylic acid includes ethylenediaminetetraacetic acid, nitrilolic acid.
  • Tripropionic acid carboxyiminodiacetic acid, carboxymethyliminodipropionic acid, diethylenetriamino acid, triethylenetetraminohexaacetic acid, iminodiacetic acid, iminodipropionic acid, hydroxyethyliminodiacetic acid, hydroxyethyliminodipropionic acid, methoxy Chiruimino diacetate, and the like.
  • These titanium compounds may be used alone or in combination. Titanium oxide generally used in fibers and the like is not soluble in polyester and is therefore excluded from the titanium compound referred to in the present invention.
  • the alkali-eluting polyester preferably contains a phosphorus compound in an amount of 5 to 40 ppm in terms of phosphorus element. More preferably, it is 9 to 35 ppm. If the amount is less than 5 ppm in terms of phosphorus element, an adipic acid component and an acidic isophthalic component containing a metal sulfonate group are copolymerized, so that the decomposition reaction of the polyester is easily promoted, and the color tone and heat resistance of the resulting polyester deteriorate. If the amount is more than 40 ppm in terms of phosphorus element, the polymerization reaction catalyst is deactivated, the polymerization reaction activity is lowered, the polymerization reaction is delayed, and the resulting polyester is colored yellowish.
  • phosphorus compounds represented by the following general formulas (formula 1) to (formula 5) can be used.
  • the phosphonite compound represented by (Formula 1) or (Formula 2) and the phosphate compound represented by (Formula 3) are used, an adipic acid component and an isophthalic acid component containing a metal sulfonate group are copolymerized.
  • the alkali-eluting polyester is preferable in terms of further improving the color tone during melt spinning and excellent heat resistance.
  • R1 and R2 each independently represents a hydroxyl group or a hydrocarbon group having 1 to 20 carbon atoms.
  • R1 to R4 each independently represents a hydroxyl group or a hydrocarbon group having 1 to 20 carbon atoms.
  • R1 to R3 each independently represents a hydrocarbon group having 1 to 20 carbon atoms.
  • the coloring of the polyester and the deterioration of the heat resistance are caused by a side reaction of the polyester polymerization reaction as specified in the saturated polyester resin handbook (Nikkan Kogyo Shimbun, first edition, pages 178 to 198).
  • carbonyl oxygen is activated by a metal catalyst, and ⁇ hydrogen is extracted, thereby generating a vinyl end group component and an aldehyde component.
  • the polyene is formed by this vinyl end group, so that the polyester is colored yellow, and the main chain ester bond is cleaved because the aldehyde component is generated, so that the polyester has poor heat resistance.
  • the polyester skeleton has an adipic acid component or an isophthalic acid component containing a metal sulfonate group
  • coordination to carbonyl oxygen easily occurs by a metal catalyst, ⁇ -hydrogen is easily extracted, and vinyl terminal Machine components and aldehyde components are likely to be generated. Due to the formation of polyene by this vinyl end group, the polyester is colored yellowish, and since an aldehyde component is generated, the main chain ester bond is easily cleaved, so that the polyester has poor heat resistance and color tone. It becomes.
  • a titanium compound when used as a polymerization catalyst, a side reaction due to heat is strongly activated, so that a large amount of vinyl end group components and aldehyde components are generated, resulting in a yellowish colored polyester having poor heat resistance.
  • the phosphorus compound not only plays a role in regulating the activity of the polymerization catalyst by appropriately interacting with the polymerization catalyst, but also distributes the titanium compound to the carbonyl oxygen of the isophthalic acid component containing an adipic acid component or a metal sulfonate group. Make it difficult to occur.
  • the heat resistance and color tone of the polyester are greatly improved while sufficiently maintaining the polymerization activity of the titanium compound. Therefore, it is preferable.
  • R5 to R7 each independently represents a hydroxyl group or a hydrocarbon group having 1 to 10 carbon atoms.
  • Examples of the phosphorus compound represented by the above (formula 4) include tetrakis (2,4) as a compound in which a is 2, b is 0, c is 0, R5 is a tert-butyl group, and R5 is in the 2,4 position.
  • R8 to R10 each independently represents a hydroxyl group or a hydrocarbon group having 1 to 10 carbon atoms.
  • the hydrocarbon group represents an alicyclic structure, an aliphatic branched structure, an aromatic group.
  • One or more group structures, hydroxyl groups and double bonds may be included.
  • the phosphorus compound represented by the above (formula 5) is a compound in which R8 is a tert-butyl group, R9 is a tert-butyl group, and R10 is a methyl group, and tetrakis (2,4-di-t-butyl-5 -Methylphenyl) [1,1-biphenyl] -4,4′-ylbisphosphonite, and this compound is available as GSY-P101 (Osaki Kogyo Co., Ltd.).
  • the phosphorus compound represented by the above (formula 3) is trimethyl phosphate in which R1 to R3 are all methyl groups, since the color tone and heat resistance of the resulting polyester are improved.
  • This compound is available as TMP (manufactured by Daihachi Chemical Co., Ltd.).
  • the alkali-eluting polyester preferably does not substantially contain an element having a true specific gravity of 5 or more.
  • the element having a true specific gravity of 5 or more is, for example, an antimony element generally used as a polymerization catalyst, or a cobalt element or a manganese element generally used as a transesterification catalyst.
  • “Substantially free” means that the content is 10 ppm or less, preferably 5 ppm, more preferably 3 ppm or less.
  • a known additive can be contained within a range not impairing the object of the present invention.
  • DEG diethylene glycol
  • EAH tetraethylammonium hydroxide
  • LAH lithium acetate
  • IR1010 produced by Ciba Specialty Chemicals, a radical scavenger typified by pentaerythritol tetrakis [3- (3,5-di-t-butyl 4-hydroxyphenyl) propionate]
  • matte typified by titanium oxide
  • the content of EAH is preferably 125 ppm or less, more preferably 40 ppm or less in terms of nitrogen.
  • the content of LAH is preferably 15 to 70 ppm as lithium element, and more preferably 25 to 55 ppm. These by-product inhibitors of DEG can be used in combination.
  • Magnesium acetate used as a transesterification reaction catalyst is preferable because the true specific gravity of the magnesium element is 5 or less.
  • the content thereof is preferably 40 ppm to 100 ppm, more preferably 50 ppm to 90 ppm, as magnesium element.
  • the mass ratio of the alkali-elutable polyester and polyamide contained in the sea-island composite cross-section fiber of the present invention is an ultra-fine polyamide fiber obtained by dissolving and removing the alkali-elutable polyester contained in the sea-island composite cross-sectional fiber, or it May be selected as appropriate from the appropriate range in order to obtain the required properties of fabrics and textiles stably, but usually in the range of 5:95 to 40:60, preferably alkaline
  • the mass ratio of the eluting polyester and polyamide is in the range of 10:90 to 30:70.
  • the mass ratio of the polyamide exceeds 90, the polyamide which is an island component is easily fused during melt spinning, so that when the alkali-eluting polyester is dissolved and removed, an ultrafine polyamide fiber having a uniform fiber diameter is obtained. It becomes difficult.
  • the mass ratio of the polyamide is less than 70, it is not preferable from the viewpoint of safety and protection of the natural environment, and from an economic viewpoint, such as increasing the amount of solvent required for dissolving and removing the alkali-eluting polyester.
  • the ultra-fine polyamide fiber itself obtained by dissolving and removing the alkali-eluting polyester is too thin compared to the sea-island type composite cross-section fiber before dissolution and removal, the fabric density becomes too rough when used as a fabric or the like.
  • the fabric design of the textile product may become difficult, and the product variation may be reduced.
  • the sea-island type composite cross-section fiber of the present invention preferably has a unit reaction rate (A) of terephthalic acid that has undergone an ester-amide exchange reaction of 0.0005 to 0.0025% ⁇ mm.
  • ester bond part and carboxyl terminal part in polyester molecular chain and amide bond part and amino terminal part in polyamide molecular chain are by-produced by causing ester-amide exchange reaction at the composite interface at the time of melting.
  • the yarn-making property may deteriorate due to this, but by controlling the unit reaction rate (A) of the terephthalic acid that has undergone the ester-amide exchange reaction, the peeling of the composite interface is suppressed. The yarn-making property can be ensured.
  • the unit reaction rate (A) of terephthalic acid that has undergone an ester-amide exchange reaction here refers to the exchange reaction rate (T) of terephthalic acid bonded to an ester-amide bond by the islands per unit volume of sea-island composite cross-section fibers.
  • T exchange reaction rate
  • S surface area
  • it is less than 0.0005% ⁇ mm, the composite interface is easily peeled off and the fluff is likely to be scattered.
  • it exceeds 0.0025% ⁇ mm it reacts with terephthalic acid at the composite interface, and in this reaction process, a gel is likely to be formed, and the yarn-making property tends to deteriorate. More preferably, it is 0.0009 to 0.0020% ⁇ mm.
  • the signal quantitative value (A1) of terephthalic acid having an ester / amide bond, the signal quantitative value (A2) of all terephthalic acid, and the surface area (S) of the island are as described below.
  • the ester-amide exchange reaction is considered to be a reaction that occurs exclusively at the composite interface between the alkali-eluting polyester and polyamide.
  • the exchange reaction rate (T) of terephthalic acid having an ester / amide bond is the reaction rate of the entire sea-island type composite cross-section fiber.
  • the part where the reaction occurs occurs at the composite interface, and the composite interface differs in the area where the reaction can occur depending on the sea island type composite cross-section fiber design, such as single yarn fineness, composite ratio, number of islands, etc. come.
  • the value calculated by the unit reaction rate (A) is the same as the exchange reaction rate (T), but the unit reaction rate (A) becomes small when the area of the composite interface where the reaction occurs is large.
  • the unit reaction rate (A) is increased, indicating that the ester / amide reaction is proceeding. Therefore, in the present invention, the state of the ester / amide exchange reaction can be evaluated by assuming the surface area of the island per unit volume of the sea-island type composite cross-sectional fiber and dividing the exchange reaction rate (T) by the area. .
  • the amino terminal group amount of the polyamide constituting the island component of the sea-island type composite cross-section fiber of the present invention is preferably 5 ⁇ 10 ⁇ 5 to 5.5 ⁇ 10 ⁇ 5 mol / g, more preferably 5.1. ⁇ 10 ⁇ 5 to 5.3 ⁇ 10 ⁇ 5 mol / g.
  • the amino end group content of polyamide is less than 5 ⁇ 10 -5 mol / g, staining of the microfine polyamide fibers obtained by the alkaline easily leachable polyester contained in the sea-island type composite cross section fibers obtained elution removal deteriorate
  • the color developability becomes inferior, and the composite interface between the polyester and the polyamide tends to peel off, and the fluff tends to be scattered.
  • the amount of amino end groups of the polyamide component exceeds 5.5 ⁇ 10 ⁇ 5 mol / g, the occurrence of ester-amide exchange reaction between polyester and polyamide increases at the composite interface, resulting in increased yarn breakage. There is a tendency.
  • the amino terminal group amount of the polyamide can be adjusted by a known method.
  • the amount of carboxyl terminal groups of the polyester constituting the sea component of the sea-island composite cross-section fiber of the present invention is preferably 35 to 55 eq / t (eq represents an equivalent, t represents t), and more preferably 40 to 50 eq / t.
  • the amount of the carboxyl terminal group of the polyester is less than 35 eq / t, the composite interface between the polyester and the polyamide tends to be peeled off, causing a problem that the fluff is scattered.
  • the amount of the carboxyl terminal group of the polyester exceeds 55 eq / t, the occurrence of the ester-amide exchange reaction product between the polyester and the polyamide increases at the composite interface, and the yarn breakage tends to increase.
  • the adjustment of the carboxyl terminal group amount of the polyester constituting the sea component of the sea-island composite cross-section fiber of the present invention can be applied by a normal polyester carboxy terminal group amount control means, for example, by changing the final polymerization temperature. It is possible to adjust.
  • Scv is preferably in the range of 0 to 25, more preferably in the range of 0 to 20.
  • the purpose of this range is to uniformly disperse the polyamide, which is an island component, and to suppress the fusion of polyamides due to the localized bias of the polyamide, so that when the alkali-eluting polyester is dissolved and removed, the uniform fiber
  • An ultrafine polyamide fiber having a diameter can be obtained.
  • the stress is evenly distributed in the fiber cross section, it is possible to obtain, for example, a sea-island type composite cross section fiber with less variation in strength and elongation in the fiber longitudinal direction.
  • the polyamide which is an island component is locally biased, the polyamides are fused at the time of melt spinning, and when the alkali-eluting polyester is dissolved and removed, it has a uniform fiber diameter. It becomes difficult to obtain ultrafine polyamide fibers. Moreover, it becomes a fiber with many strong elongation variations in a fiber longitudinal direction.
  • the single yarn fineness of the ultrafine polyamide fiber obtained by dissolving and removing the alkali-eluting polyester of the sea-island composite cross-section fiber of the present invention is preferably in the range of 0.01 to 0.5 dtex, more preferably 0.01. It is in the range of ⁇ 0.2 dtex.
  • the single yarn fineness of the ultrafine polyamide fiber can be calculated from the total fineness of the sea-island type composite cross-sectional fiber, the number of filaments, the number of polyamide islands, and the mass ratio of the polyamide when calculated from the sea-island type composite cross-sectional fiber.
  • the ultrafine polyamide fiber yarn is taken out from the fabric, subjected to initial load, sampled, the yarn length, mass and the number of filaments are measured, and the apparent total fineness and single yarn fineness are calculated.
  • the single yarn fineness of the ultrafine polyamide fiber is less than 0.01 dtex, it tends to be inferior in the quality of fabrics and textile products, such as poor color development due to diffused reflection of light and poor dyeing fastness.
  • the single yarn fineness of the ultrafine polyamide fiber exceeds 0.5 dtex, it can be obtained by single melt spinning with a single polymer focusing on the spinneret design, so there is no merit obtained as a sea-island type composite cross-section fiber.
  • the fabric and fiber product of the present invention will be described.
  • the fabric refers to a woven fabric, a knitted fabric, or a non-woven fabric.
  • the sea-island composite cross-section fiber of the present invention can be obtained as a fabric or a fiber product as it is.
  • the sea-island composite cross-section fiber contains at least a part of the sea-island composite fiber, and is easily dissolved into alkali by the alkali. By dissolving and removing the polyester, it is possible to obtain an ultrafine polyamide fiber and a fabric excellent in soft feeling.
  • the ultrafine polyamide fiber of the present invention, a fabric having a part of the ultrafine polyamide fiber, and a fiber product can be obtained by dissolving and removing the alkali-elutable polyester of the sea-island composite cross-section fiber by alkali treatment.
  • Dissolving and removing means that 97 to 100% of the alkali-eluting polyester contained in the sea-island composite fiber is dissolved and removed by alkali treatment.
  • the alkali concentration and temperature in dissolution and removal can be arbitrarily set.
  • sodium hydroxide caustic soda
  • it is preferably treated as a 0.5 to 20% by mass aqueous solution at 60 to 120 ° C.
  • concentration of the aqueous solution exceeds 20% by mass, there is a danger in handling for production workers.
  • the amount is less than 0.5% by mass, the hydrolysis rate becomes slow, and dissolution and removal time is required.
  • the temperature of the aqueous solution exceeds 120 ° C.
  • the polyamide particularly nylon 6
  • the hydrolysis rate becomes slow, and dissolution and removal time is required.
  • Innerwear such as shorts, leg knits such as stockings and socks, sports and casual wear such as shirts and blousons, pants, coats, apparel materials such as men's and women's apparel, as well as apparel materials such as bra cups and pads, It can also be suitably used for interior applications such as curtains, carpets, mats and furniture, industrial material applications such as water-absorbing felts and polishing cloths, industrial material applications such as filters, and vehicle interior applications.
  • the production by melt spinning is the most excellent.
  • a method in which the spinning-drawing process is continuously performed direct spinning drawing method
  • a method in which the undrawn yarn is wound up and then drawn two-step method
  • the spinning speed is 3000 m / It can be produced by any method such as a method (high speed spinning method) that substantially eliminates the stretching step at a high speed such as min or more. Further, yarn processing such as false twisting and air entanglement may be performed as necessary.
  • the following is an example of production by the direct spinning drawing method.
  • melt spinning at a temperature as low as possible is preferable because the ester-amide exchange reaction at the time of melt spinning can be controlled and the spinning property is improved.
  • the temperature in the spinneret at the time of joining the polyamide and the alkali-eluting polyester tends to be good. For this reason, it is preferable that the temperature in the spinneret can be directly measured, but the measured value of the spinning temperature on the discharge surface of the spinneret is used instead.
  • melt spinning at the lowest possible temperature improves the spinnability because the ester / amide exchange reaction during melt spinning can be suppressed.
  • it is preferably within + 70 ° C., more preferably within + 60 ° C., from the melting point of the polymer having the lower melting point of polyamide or easily eluted polyester.
  • the polyamide and the alkali-eluting polyester that have flowed into the spinning pack are joined together by a known spinneret, formed into a sea-island composite cross section, and discharged from the spinneret.
  • a known spinneret formed into a sea-island composite cross section, and discharged from the spinneret.
  • sea-island composite spinneret There are various known examples of the sea-island composite spinneret, but the sea island in the spinneret is provided with a plurality of pipes that serve as island component channels and sea component channels (slits) surrounding each of these island components. Complex formation is preferable because the Scv can be easily controlled.
  • FIG. 1 is an example of a sea-island type composite spinneret that can be used in the present invention, and is a schematic view showing a cross section of a sea-island type composite spinneret used in examples described later.
  • the island component flowing in from the island component inlet hole (pipe) (5) passes through the gap (6) to slit (7) between the sea component inlet hole (4) to the first plate (1) and the second plate (2). According to the sea component which passed, it will become the form coated in a so-called junction part (8).
  • the island components coated with the sea component merge at the junction (9) of the No. 3 plate (3), are formed in a sea-island composite section, and are discharged from the discharge hole (10).
  • the sea-island type composite cross-section fiber discharged from the spinneret is cooled, solidified, applied with an oil agent, and then taken up.
  • the spinning speed is preferably in the range of 1000 to 5000 m / min, the draw ratio is appropriately set so that the elongation of the drawn yarn is in the range of 30 to 50%, and 1 goded roll is 80 to 100 ° C., 2 godded rolls are 150 to It is preferable to set a heat setting temperature in the range of 180 ° C., perform stretching and heat treatment, and wind up at a winding speed in the range of 3000 to 5000 m / min.
  • the present invention will be described in more detail with reference to examples.
  • the present invention is not limited to the following examples as long as the gist thereof is not exceeded.
  • the measuring method of the physical property of the sea-island type composite cross-section fiber and ultrafine polyamide fiber of the present invention is as follows.
  • the titanium compound insoluble in polyester was removed by performing the following pretreatment, and the fluorescent X ray analysis was conducted. That is, polyester is dissolved in orthochlorophenol (5 g of polyester with respect to 100 g of solvent), and after adding the same amount of dichloromethane as this polyester solution to adjust the viscosity of the solution, a centrifuge (rotation speed 18000 rpm, 1 hour) To settle the particles.
  • the polyester is reprecipitated by adding the same amount of acetone as the supernatant liquid, and then filtered through a 3G3 glass filter (manufactured by IWAKI). After washing with, the acetone was removed by vacuum drying at room temperature for 12 hours.
  • the polyester obtained by the above pretreatment was analyzed for titanium element.
  • the 1 H-NMR spectrum of terephthalic acid of the alkali-soluble copolymerized polyester used in the present invention usually has a main peak bonded to 12 C and a satellite peak bonded to 13 C (both sides of the main peak (around 7.89 to 8.00 ppm). In the vicinity of 8.25 to 8.34 ppm), an equivalently split peak is observed.
  • the amount of terephthalic acid bonded to the ester / amide is subtracted from the peak area value around 7.89 to 8.00 ppm from the satellite peak area value bound to 13 C observed around 8.25 to 8.34 ppm. Furthermore, since there are two protons in the ortho position of the carboxyl group of terephthalic acid having an ester-amide bond, it can be obtained by dividing by 2.
  • the signal quantitative value (A1) of terephthalic acid having an ester / amide bond was calculated as (ab) / 2.
  • the satellite peak bound to 13 C is equivalently observed as a bisecting peak. Since the natural abundance of 13C is 1.1%, the signal quantitative value (A2) of all terephthalic acid is calculated as 100b / 0.55. did. Details of 1 H-NMR measurement conditions are described below. Device: DRX-500 (manufactured by JEOL) Observation frequency: 499.8 MHz Observation nucleus: 1 H Observation width: 6 kHz Solvent: HFIP-d2 Concentration: 40mg / 1g Chemical shift criteria: 4.4 ppm residual proton in solvent Integration count: 64 Temperature: 25 ° C Repeat time: 10.0 sec Spin: no spin.
  • N Spinning property
  • the weight loss rate is 90% or more when removed in 30 minutes ⁇ : The weight loss rate is 90% or more when taken out in 60 minutes ⁇ : The weight loss rate is 90% or more when taken out in 90 minutes XX: The weight loss rate is 90% or more when taken out in 120 minutes XX: The weight loss rate is less than 90% when taken out in 120 minutes
  • Ti-lactic acid catalyst In a reaction tank purged with nitrogen, 536.4 g of lactic acid (manufactured by Wako Pure Chemical Industries, Ltd.) is added to 40 L of ethylene glycol as a reaction solvent, and heated to 80 ° C. Then, after cooling to 40 degreeC, 712g of titanium tetraisopropoxide (made by Nippon Soda Co., Ltd.) was added, and it stirred for 24 hours. Thus, a Ti-lactic acid catalyst (titanium content: 2.63 g / L) was obtained.
  • Example 1 (Polymerization method) In a transesterification reaction tank equipped with a rectifying column, 927 parts by weight of dimethyl terephthalate, 595 parts by weight of ethylene glycol, and a concentration of 5.1 mol% with respect to all acid components in the polyester from which dimethyl adipate is obtained. Preparation was made so that dimethyl 5-sodium sulfoisophthalate was obtained in an amount of 2.4 mol% based on the total acid components in the polyester.
  • Ti-lactic acid catalyst as titanium compound is 5 ppm in terms of titanium element, and tetrakis (2,4-di-t-butyl-5-methylphenyl) [1,1-biphenyl] -4,4′-diyl is used as phosphorus compound.
  • Bisphosphonite (GSY-P101 manufactured by Osaki Industrial Chemical Co., Ltd.) was added to 10 ppm in terms of phosphorus element, magnesium acetate tetrahydrate was added to 600 ppm, and then EAH20 (tetraethylammonium hydroxide 20%, water) A mixture of 67% and 13% methanol (manufactured by Sanyo Chemical Co., Ltd.) was added at 1200 ppm (29.3 ppm in terms of nitrogen). Thereafter, the temperature of the transesterification reaction tank was gradually raised, and the reaction was allowed to proceed while distilling off methanol generated during the transesterification reaction out of the reaction system to obtain a low polymer.
  • the low polymer was transferred from the transesterification reaction tank to the polymerization reaction tank.
  • an ethylene glycol slurry of titanium oxide was added so that the concentration in the polyester was 0.07 wt%.
  • the temperature in the reaction vessel was gradually raised from 240 ° C. to 280 ° C., and the pressure was reduced to 50 Pa while distilling off ethylene glycol.
  • the predetermined agitator torque power value
  • the reaction system was purged with nitrogen to return to normal pressure, the polymerization reaction was stopped, discharged in a strand form, cooled, and immediately cut to obtain polyester pellets.
  • the time from the start of decompression to the arrival of the predetermined agitator torque was approximately 2 hours and 15 minutes.
  • the obtained polyester chip had an intrinsic viscosity of 0.62, DEG 2.0% by mass, an ⁇ intrinsic viscosity 280 of 0.020, a carboxyl end group amount of 47.4 eq / t, and a melting point of 235 ° C. Properties of the obtained polyester are shown in Table 1.
  • This polyester chip was dried by a conventional method so that the moisture content was 0.01% by mass or less. Further, as polyamide, a nylon 6 chip having a sulfuric acid relative viscosity ( ⁇ r) of 2.6, an amino terminal group amount of 5.20 ⁇ 10 ⁇ 5 mol / g, and a melting point of 215 ° C. has a moisture content of 0.03% by mass or less. It dried by the conventional method.
  • the obtained polyester chips were melted at 270 ° C., nylon 6 chips at a melting temperature of 270 ° C., the polyester chips were melted at 20% by mass, and the nylon 6 chips were melted at 80% by mass in each individual pressure melter, It merged with the die and formed into a sea-island composite and was discharged from the spinneret.
  • the spinneret is a spinneret in which the pipe (5) shown in FIG. 1 has entered partway through the No. 2 plate (2). There are 37 islands per single yarn (hole) and the number of holes per spinneret. Of 20 (total number of islands is 740).
  • the spinning temperature was 270 ° C.
  • the island-bounding circle diameter ( ⁇ m) and the sea-island area ratio were evaluated using the obtained sea-island type composite cross-section fibers.
  • a sea part polyester having a circumscribed circle of 0.3 ⁇ m was present at an island area ratio of 20%.
  • Example 2 A polyester chip was obtained by polymerization in the same manner as in Example 1 except that the content of the titanium compound was 15 ppm.
  • the obtained polyester chip had an intrinsic viscosity of 0.62, DEG 2.0% by mass, an ⁇ intrinsic viscosity 280 of 0.015, a carboxyl end group amount of 40.2 eq / t, and a melting point of 235 ° C. Further, spinning was carried out in the same manner as in Example 1 to obtain a sea-island type composite cross-section fiber of 78 dtex-20 filament.
  • the spinning property was B, but the alkali elution was excellent, and the obtained sea-island type composite cross-section fiber was good with almost no fluffing.
  • Example 3 A polyester chip was obtained by polymerization in the same manner as in Example 1 except that the content of the phosphorus compound was 2 ppm.
  • the obtained polyester chip had an intrinsic viscosity of 0.62, DEG 0.2% by mass, an ⁇ intrinsic viscosity 280 of 0.030, an amount of carboxyl end groups of 41.6 eq / t, and a melting point of 235 ° C. Further, spinning was carried out in the same manner as in Example 1 to obtain a sea-island type composite cross-section fiber of 78 dtex-20 filament.
  • the spinning property was B, but the alkali elution was excellent, and the obtained sea-island type composite cross-section fiber was good with almost no fluffing.
  • Example 4 Spinning was performed in the same manner as in Example 1 except that the amino terminal group amount of nylon 6 chip was 5.0 ⁇ 10 ⁇ 5 mol / g, and a sea-island type composite cross-section fiber of 78 dtex-20 filament was obtained.
  • Example 5 Spinning was carried out in the same manner as in Example 1 except that the amino terminal group amount of the nylon 6 chip was changed to 5.4 ⁇ 10 ⁇ 5 mol / g to obtain a sea-island type composite cross-section fiber of 78 dtex-20 filament.
  • the yarn forming property was B, it was excellent in alkali elution, and the resulting sea-island type composite cross-section fiber had fluff generation of 1.9 co / 10,000 m.
  • Example 6 Polymerization and spinning were performed in the same manner as in Example 1 except that the carboxyl end group amount of the polyester chip was 35.2 eq / t, and a sea-island composite cross-section fiber of 78 dtex-20 filaments was obtained.
  • Example 7 Polymerization and spinning were performed in the same manner as in Example 1 except that the carboxyl end group amount of the polyester chip was 54.8 eq / t, and a sea-island type composite cross-section fiber of 78 dtex-20 filaments was obtained.
  • the spinning property was B, but the alkali elution was excellent, and the resulting sea-island composite cross-section fiber had fluff generation of 1.7 co / 10,000 m.
  • Example 8 Spinning was performed in the same manner as in Example 1 except that the amino terminal group amount of the nylon 6 chip was 4.5 ⁇ 10 ⁇ 5 mol / g to obtain a sea-island type composite cross-section fiber of 78 dtex-20 filament.
  • the resulting sea-island type composite cross-section fibers were excellent in yarn-making properties and alkali elution properties, and the occurrence of fluff was 2 / 10,000 m.
  • Example 9 Spinning was performed in the same manner as in Example 1 except that the amino terminal group amount of nylon 6 chip was 6.0 ⁇ 10 ⁇ 5 mol / g, and a sea-island type composite cross-section fiber of 78 dtex-20 filament was obtained.
  • the spinning property was B, but the alkali elution was excellent, and the obtained sea-island type composite cross-section fiber was good with almost no fluffing.
  • Example 10 Except that the amount of carboxyl end groups of the polyester chip was 32.8 eq / t, polymerization and spinning were carried out in the same manner as in Example 1 to obtain a 78 dtex-20 filament sea-island type composite cross-section fiber.
  • the resulting sea-island type composite cross-section fibers were excellent in yarn-making properties and alkali elution properties, and the occurrence of fluff was 2 / 10,000 m.
  • Example 11 Polymerization and spinning were conducted in the same manner as in Example 1 except that the carboxyl end group amount of the polyester chip was 68.1 eq / t, and a sea-island type composite cross-section fiber of 78 dtex-20 filaments was obtained.
  • the spinning property was C, but the alkali elution was excellent, and the obtained sea-island type composite cross-section fiber was good with almost no fluffing.
  • Example 12 Spinning was carried out in the same manner as in Example 1 except that a composite yarn was obtained in a proportion of 10% by mass of the polyester chip and 90% by mass of the nylon 6 chip to obtain a sea-island type composite cross-section fiber of 78 dtex-20 filaments.
  • Example 13 Spinning was carried out in the same manner as in Example 1 except that a composite yarn was obtained in a proportion of 30% by mass of polyester and 70% by mass of nylon 6 to obtain a sea-island type composite cross-section fiber of 78 dtex-20 filaments.
  • Example 14 Polymerization was performed in the same manner as in Example 1 except that the amino terminal group amount of the nylon 6 chip was 4.5 ⁇ 10 ⁇ 5 mol / g and the polyester terminal was polymerized so that the carboxyl terminal group amount was 32.8 eq / t. Spinning was performed to obtain a sea-island type composite cross-section fiber of 78 dtex-20 filaments.
  • the resulting sea-island type composite cross-section fibers were excellent in yarn-making properties and alkali elution properties, and the occurrence of fluff was 5 / 10,000 m.
  • Example 15 Polymerization was carried out in the same manner as in Example 1 except that the amino terminal group amount of the nylon 6 chip was 6.0 ⁇ 10 ⁇ 5 mol / g, and the polymerization was performed so that the carboxyl terminal group amount of the polyester chip was 68.1 eq / t. Spinning was performed to obtain a sea-island type composite cross-section fiber of 78 dtex-20 filaments.
  • the spinning property was D, but the alkali elution was excellent, and the obtained sea-island type composite cross-section fiber was good with almost no fluffing.
  • the yarn reaction, Scv unit reaction rate A of terephthalic acid that has undergone ester / amide exchange reaction, elongation, number of fluffs, alkali elution, and obtained sea-island type composite
  • the softness of plain woven fabric made of polyamide ultrafine fibers obtained by dissolving and removing the polyester of the cross-sectional fibers was evaluated. The results are shown in Table 4.
  • Comparative Examples 1, 3, and 5 were all excellent in yarn-making properties, but when the content of the adipic acid component was reduced, the fluff increased and the alkali elution was inferior. Further, the fabric obtained by subjecting the plain plain fabric of the sea-island composite fiber to an alkali dissolution treatment was in a state in which a little polyester remained undissolved, and was slightly inferior in softness.
  • Comparative Examples 2, 4, and 6 were all excellent in alkali elution and good with no fluffing, but were inferior in yarn production.
  • Comparative Example 7 was excellent in yarn-making property, but fuzzed frequently and inferior in alkali elution. Further, the fabric obtained by subjecting the plain plain fabric of the sea-island composite fiber to an alkali dissolution treatment was in a state where a large amount of polyester remained undissolved, and was inferior in softness.
  • the sea-island composite cross-section fiber of the present invention has significantly improved generation of fluff due to peeling of the ultrafine polyamide fiber compared to the conventional sea-island composite cross-section fiber. It can be said that the spinning operability is excellent and the solubility to the alkali is excellent, and a very remarkable effect is exhibited. Moreover, in a preferred embodiment, a sea-island type composite fiber with further improved spinning operability can be obtained, and the practicality can be further improved.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Multicomponent Fibers (AREA)

Abstract

La présente invention concerne : une fibre dotée d'une section transversale composite de type île et mer, ce qui permet d'empêcher le détachement au niveau d'une interface composite et permet également d'améliorer considérablement l'apparition de peluchage, de rupture du fil ou autres ; de plus, une fibre de polyamide ultrafine est produite par dissolution et élimination d'un polyester contenu dans la fibre dotée d'une section transversale composite de type île et mer. Une fibre dotée d'une section transversale composite de type île et mer, dans laquelle un composant de mer comprend un polyester permettant d'éluer facilement avec un constituant alcalin et un composant d'île comprend un polyamide, le polyester contenant un constituant acide isophtalique qui est un constituant doté d'une unité de répétition principale composée de téréphtalate d'éthylène et contenant un groupe sulfonate de métal, en proportion allant de 2,0 à 5,5 % en moles par rapport à la quantité totale de tous les constituants acides et un constituant acide adipique en proportion allant de 3,0 à 6,0 % en moles par rapport à la quantité totale de tous les constituants acides.
PCT/JP2012/071604 2012-08-27 2012-08-27 Fibre dotée d'une section transversale composite de type île et mer et procédé de production de ladite fibre WO2014033816A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/071604 WO2014033816A1 (fr) 2012-08-27 2012-08-27 Fibre dotée d'une section transversale composite de type île et mer et procédé de production de ladite fibre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/071604 WO2014033816A1 (fr) 2012-08-27 2012-08-27 Fibre dotée d'une section transversale composite de type île et mer et procédé de production de ladite fibre

Publications (1)

Publication Number Publication Date
WO2014033816A1 true WO2014033816A1 (fr) 2014-03-06

Family

ID=50182667

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/071604 WO2014033816A1 (fr) 2012-08-27 2012-08-27 Fibre dotée d'une section transversale composite de type île et mer et procédé de production de ladite fibre

Country Status (1)

Country Link
WO (1) WO2014033816A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012180601A (ja) * 2011-02-28 2012-09-20 Toray Ind Inc アルカリ易溶出性ポリエステルからなる海島複合断面繊維
WO2021097668A1 (fr) * 2019-11-19 2021-05-27 江苏盛恒化纤有限公司 Technologie de traitement de fil entrelacé mer-île noire

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6163768A (ja) * 1984-09-05 1986-04-01 三菱レイヨン株式会社 絹紡調の風合を有する布帛の製造方法
JPS638207B2 (fr) * 1978-11-20 1988-02-22 Toray Industries
JPH07310235A (ja) * 1994-05-17 1995-11-28 Mitsubishi Rayon Co Ltd 溶出分割型ポリエステル複合繊維
JP2008156769A (ja) * 2006-12-22 2008-07-10 Mitsubishi Rayon Co Ltd カチオン可染性複合繊維、およびそれを含む繊維製品
JP2012180601A (ja) * 2011-02-28 2012-09-20 Toray Ind Inc アルカリ易溶出性ポリエステルからなる海島複合断面繊維

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS638207B2 (fr) * 1978-11-20 1988-02-22 Toray Industries
JPS6163768A (ja) * 1984-09-05 1986-04-01 三菱レイヨン株式会社 絹紡調の風合を有する布帛の製造方法
JPH07310235A (ja) * 1994-05-17 1995-11-28 Mitsubishi Rayon Co Ltd 溶出分割型ポリエステル複合繊維
JP2008156769A (ja) * 2006-12-22 2008-07-10 Mitsubishi Rayon Co Ltd カチオン可染性複合繊維、およびそれを含む繊維製品
JP2012180601A (ja) * 2011-02-28 2012-09-20 Toray Ind Inc アルカリ易溶出性ポリエステルからなる海島複合断面繊維

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012180601A (ja) * 2011-02-28 2012-09-20 Toray Ind Inc アルカリ易溶出性ポリエステルからなる海島複合断面繊維
WO2021097668A1 (fr) * 2019-11-19 2021-05-27 江苏盛恒化纤有限公司 Technologie de traitement de fil entrelacé mer-île noire

Similar Documents

Publication Publication Date Title
JP6015447B2 (ja) 芯鞘複合繊維およびその製造方法
JP5655632B2 (ja) アルカリ易溶出性ポリエステルからなる海島複合断面繊維
EP1134307B1 (fr) Fibres creuses et procédé de fabrication de fibres creuses
WO2000078839A1 (fr) Resine d'acide polyactique, articles textiles obtenus a l'aide de cette resine, et procedes de production de ces articles textiles
US20060210797A1 (en) Modified cross-section polyester fibers
JP5813747B2 (ja) カチオン可染ポリエステル繊維及び複合繊維
JP2014043659A (ja) 海島型複合断面繊維およびその製造方法
WO2014033816A1 (fr) Fibre dotée d'une section transversale composite de type île et mer et procédé de production de ladite fibre
JP2011157646A (ja) ポリエステル極細繊維
EP1584710A1 (fr) Fibres de polyester ayant une section deformee
JP2013018802A (ja) ポリエステル樹脂組成物及び同樹脂組成物の製造方法と、同樹脂組成物からなるポリエステル繊維並びにその繊維製品
JP2014198917A (ja) サイドバイサイド型複合繊維
TW201408832A (zh) 海島型複合斷面纖維及其製造方法
JP2009074211A (ja) 海島型複合断面繊維
JP4108873B2 (ja) ポリエステル繊維
JP2017128830A (ja) 収縮割繊用芯鞘複合繊維
JP2009084748A (ja) ポリマーアロイ繊維を用いた混繊糸およびそれからなる織編物
JP2024002177A (ja) 異形断面ポリエステル繊維
JPH0881831A (ja) 吸湿性に優れた芯鞘型複合繊維
JP2023014998A (ja) 制電性および吸湿性に優れた海島型複合繊維
JP2004131860A (ja) ポリエステル複合繊維
JPS6342913A (ja) 異収縮混繊糸の製造法
JP2023127468A (ja) 改質ポリエステル組成物およびそれよりなる繊維並びに繊維構造体
JP4848950B2 (ja) ポリマーアロイ繊維
JP2008179926A (ja) セルロース脂肪酸混合エステル極細繊維前駆体およびその製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12883472

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12883472

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP