WO2022107671A1 - 海島複合ポリエステル繊維 - Google Patents
海島複合ポリエステル繊維 Download PDFInfo
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- WO2022107671A1 WO2022107671A1 PCT/JP2021/041432 JP2021041432W WO2022107671A1 WO 2022107671 A1 WO2022107671 A1 WO 2022107671A1 JP 2021041432 W JP2021041432 W JP 2021041432W WO 2022107671 A1 WO2022107671 A1 WO 2022107671A1
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- Prior art keywords
- island
- sea
- polyester fiber
- orientation parameter
- fiber
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- 239000000835 fiber Substances 0.000 title claims abstract description 128
- 239000002131 composite material Substances 0.000 title claims abstract description 94
- 229920000728 polyester Polymers 0.000 title claims abstract description 88
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 26
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 229920001515 polyalkylene glycol Polymers 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
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- 238000010828 elution Methods 0.000 description 37
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- WPSWDCBWMRJJED-UHFFFAOYSA-N 4-[2-(4-hydroxyphenyl)propan-2-yl]phenol;oxirane Chemical class C1CO1.C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 WPSWDCBWMRJJED-UHFFFAOYSA-N 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
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- 229920002215 polytrimethylene terephthalate Polymers 0.000 description 3
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
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- 235000011037 adipic acid Nutrition 0.000 description 2
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- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 2
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- 229920000647 polyepoxide Polymers 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- QFGCFKJIPBRJGM-UHFFFAOYSA-N 12-[(2-methylpropan-2-yl)oxy]-12-oxododecanoic acid Chemical compound CC(C)(C)OC(=O)CCCCCCCCCCC(O)=O QFGCFKJIPBRJGM-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
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- 206010016322 Feeling abnormal Diseases 0.000 description 1
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- 238000001237 Raman spectrum Methods 0.000 description 1
- 101100407738 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) PET10 gene Proteins 0.000 description 1
- 101100108272 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) PET9 gene Proteins 0.000 description 1
- ORLQHILJRHBSAY-UHFFFAOYSA-N [1-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1(CO)CCCCC1 ORLQHILJRHBSAY-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
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- 230000015572 biosynthetic process Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- QYQADNCHXSEGJT-UHFFFAOYSA-N cyclohexane-1,1-dicarboxylate;hydron Chemical compound OC(=O)C1(C(O)=O)CCCCC1 QYQADNCHXSEGJT-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
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- 238000010036 direct spinning Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
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- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 239000004408 titanium dioxide Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
Definitions
- the present invention relates to a multi-island sea-island composite fiber composed of a polymer having three or more components.
- Fibers using thermoplastic polymers such as polyester and polyamide have excellent mechanical properties and dimensional stability, so they are widely used not only for clothing but also for interiors, vehicle interiors, and industrial applications. Now that the applications of fibers are diversifying, the required characteristics are also diversified, and techniques for imparting emotional effects such as texture and bulkiness depending on the cross-sectional shape of the fibers have been proposed. Above all, “miniaturization of fibers” has a great effect on the characteristics of the fibers themselves and the characteristics after being made into a fabric, and is a mainstream technique from the viewpoint of controlling the cross-sectional shape of the fibers.
- the limit is that the diameter of the obtained fibers is about several ⁇ m even if the spinning conditions are highly controlled.
- the "Kaijima-type composite spinning method" for obtaining composite fibers is often used.
- this composite spinning method a plurality of island polymers composed of sparingly soluble components are arranged on a sea polymer composed of an easily soluble component in a fiber cross section, and after making a fiber or a textile product, the island polymer is removed. It generates ultrafine fibers made of partial polymer.
- This composite spinning method is widely used in the production of ultrafine fibers currently industrially produced because it can form a highly accurate yarn cross-sectional shape uniformly and uniformly in the traveling direction of the yarn.
- Fibers with extreme fineness can exhibit a soft touch and fineness that cannot be obtained with ordinary fibers, so they are widely used as suede-like fabrics and wiping cloths in clothing applications.
- a sea-island type composite fiber containing a sparingly soluble island in the sea part made of an easily soluble polymer, or a sparingly soluble ultrafine fiber is partitioned by the easily soluble polymer.
- split fiber type composite fibers see, for example, Patent Documents 1 and 2.
- the island portion is composed of two or more kinds of polymers having a shrinkage difference, and although it is an ultrafine fiber, it has excellent fiber physical characteristics, has good yarn-making property, and has a swelling feeling and flexibility when made into a cloth.
- a sea-island type multi-component composite fiber having a soft texture has been proposed (see, for example, Patent Document 3).
- the present invention solves the above-mentioned problems, and an object of the present invention is to provide ultrafine fibers having excellent high openness and bulkiness.
- the present inventors have provided a suede-like material having excellent fiber opening and bulkiness by using a sea-island composite fiber that expresses a shrinkage difference due to islands having different orientations. I found out what I could do. That is, the present invention adopts the following configuration. ⁇ 1> It has a sea island structure having two or more different island parts from the sea part, the outer diameter of the island part is 1.0 to 7.0 ⁇ m, and the maximum of the island part with respect to the orientation parameter of the minimum orientation component.
- a sea-island composite polyester fiber having an orientation parameter ratio (maximum orientation parameter / minimum orientation parameter) of 1.03 to 1.15 and an orientation parameter of the maximum orientation component of 4.0 to 8.5.
- the sea-island composite polyester fiber of the present invention is a multi-island sea-island composite fiber having two or more types of islands having different orientations.
- the sea-island composite polyester fiber of the present invention is an ultrafine fiber having excellent fiber-opening properties and bulkiness because the islands show a shrinkage difference due to the dissolution / removal treatment of the sea-based polymer. Therefore, the sea-island composite polyester fiber of the present invention makes it possible to obtain a suede-like material having excellent brushing uniformity and brushing thickness and having a good feel.
- FIG. 1 is a schematic view showing the island portion arrangement of the cross section of the composite fiber according to the embodiment of the present invention.
- the sea-island composite polyester fiber of the present invention is a sea-island type composite fiber having a sea-island structure having a sea part and an island part.
- the polymer constituting the sea-island composite polyester fiber of the present invention contains at least three components, one of which is an easily eluted polymer constituting the sea portion.
- the island is composed of at least two kinds of sparingly soluble polymers having different orientation parameters, and has a difference in yarn length after desealing (removal of the marine polymer) by alkaline treatment and dry heat treatment. As a result, the obtained fibers become ultrafine fibers having excellent openness and bulkiness.
- polyester-based polymer for the island portion constituting the sea-island composite polyester fiber of the present invention.
- polyester-based polymer examples include polyester obtained by copolymerizing an acid component and a diol component, as well as polylactic acid and the like.
- Examples of the acid component include aliphatic dicarboxylic acids such as succinic acid, glutaric acid, adipic acid, pimelli acid, suberic acid, sebacic acid and dodecanedioic acid, terephthalic acid, isophthalic acid and 2,6-naphthalenedicarboxylic acid.
- Examples include aromatic dicarboxylic acids.
- Examples of the diol component include alkylene glycols having 2 to 10 carbon atoms such as ethylene glycol, trimethylene glycol, and tetramethylene glycol.
- Polyester is particularly preferably polyethylene terephthalate, polytrimethylene terephthalate, or polybutylene terephthalate.
- polyesters may contain a copolymerization component capable of forming other ester bonds in a proportion of 20 mol% or less, more preferably 10 mol% or less, respectively, of a part of the diol component and the acid component.
- copolymerizable compounds include dicarboxylic acids such as isophthalic acid, succinic acid, cyclohexanedicarboxylic acid, adipic acid, dimaic acid, sebacic acid, and 5-sodium sulfoisophthalic acid, ethylene glycol, diethylene glycol, butanediol, and neopentyl glycol.
- diols such as cyclohexanedimethanol, polyethylene glycol and polypropylene glycol.
- the polyester polymer may contain additives such as a matting agent, a flame retardant, an antistatic agent, and a pigment.
- At least two types of polymers having different orientation parameters are used for the island portion of the sea-island composite polyester fiber of the present invention.
- the islands of high alignment (high shrinkage) and low alignment (low shrinkage) in the composite fiber are opened by the Nicolling treatment, and different shrinkage mixed yarns of microfibers are obtained. Be done.
- the orientation parameter referred to in the present invention is an index of the molecular orientation of the polymer, and the larger the value, the higher the molecular orientation.
- a homopolyester polymer is suitable.
- a copolymerized polyester such as isophthalic acid is preferable.
- the outer diameter of the island portion is 1.0 to 7.0 ⁇ m.
- the outer diameter of the island portion is 1.0 ⁇ m or more, diffused reflection on the fiber surface can be suppressed, and light dyeing when made into a fabric can be suppressed. Further, the bending rigidity is increased, and the fabric is bulky and has an excellent repulsive feeling.
- the outer diameter of the island portion is 6.1 ⁇ m or less, a delicate touch and a soft feeling can be obtained.
- the upper limit of the outer diameter of the island is preferably 6.5 ⁇ m or less, preferably 6.3 ⁇ m or less, 6.1 ⁇ m or less, 5.0 ⁇ m or less, 4.5 ⁇ m or less, and the lower limit is 1.5 ⁇ m in that order.
- the above is preferable, and 2.0 ⁇ m or more is more preferable.
- the sea-island composite polyester fiber of the present invention has 1. It is 03 to 1.15, and the orientation parameter of the maximum orientation component is 4.0 to 8.5.
- the orientation parameter indicates the orientation of the molecular chains of each island, and the difference in orientation between the islands is large and the orientation of the high shrinkage is advanced. To increase. By increasing the contraction difference between the islands, voids are developed after desealing, and it becomes possible to enhance the fibrousness and bulkiness.
- the orientation parameter ratio is more preferably 1.05 to 1.12.
- the orientation parameter of the maximum orientation component is preferably 4.0 to 8.0, more preferably 4.5 to 8.0, further preferably 5.0 to 7.5, and 6.0 to 7. .0 is particularly preferred.
- FIG. 1 shows the case of two types of islands (first island 1 and second island 2) as an example.
- the sea-island composite polyester fiber of the present invention preferably has a yarn length difference of 15 to 40% after the de-sea treatment, which is subjected to alkaline treatment and dry heat treatment under the following conditions.
- Alkaline treatment conditions Sodium hydroxide aqueous solution (concentration 1 g / L), 92 ° C, 30 minutes, no-load dry heat treatment conditions: 190 ° C, 1 minute, no-load
- the difference in yarn length of the islands after desealing treatment is 15% or more. In that case, since the single yarn is easily pulled out in the raising process of the cloth, the bristles become long, the bulkiness is improved, and the raising thickness of the cloth becomes good.
- the difference in yarn length between the islands after the desealing treatment is more preferably 20 to 35%.
- the thread length difference of the islands is as follows, where the length of the shortest island is L1 and the length of the longest island is L2 among the islands in the fiber after the alkali treatment and the dry heat treatment. Calculated in (1).
- the sea portion constituting the sea-island composite polyester fiber of the present invention contains polyester as a main component because alkali dissolution with caustic soda as a dissolving agent is widely performed industrially. More preferably, a copolymerized polyester in which isophthalic acid having a metal sulfonate group or a derivative thereof and polyalkylene glycol is used in combination is preferable, and a combination of 5-sodium sulfoisophthalic acid and polyethylene glycol is particularly preferable.
- the content of isophthalic acid having a metal sulfonate group is preferably 5.0 to 15.0 mol%.
- the content of isophthalic acid is 5.0 mol% or more, the elution of the sea portion during the desea treatment is improved, and the fusion between the single yarns due to the unelution of the sea component is suppressed. Further, when the content of isophthalic acid is 15 mol% or less, the softening of the polymer is suppressed and the process passability at the time of weaving / knitting becomes good.
- the number average molecular weight of the polyalkylene glycol is preferably 500 to 2000.
- the number average molecular weight is 500 or more, the elution of the sea portion during the desealing treatment is improved, and the fusion between the single yarns due to the unelution of the sea component is suppressed.
- the molecular motion of the sea component during melt spinning is enhanced, the orientation of the islands is easy to proceed, the orientation parameters of the islands are appropriate values, and the difference in yarn length is expressed, resulting in openness and bulkiness. It is preferable because it is excellent in.
- the number average molecular weight of the polyalkylene glycol is 2000 or less, the compatibility with the polyester is good and the silk-reeling property is excellent.
- the content of the polyalkylene glycol is preferably 5.0 to 15.0% by weight in the polyester polymer.
- the content of the polyalkylene glycol is 5.0% by weight or more, the elution of the sea portion at the time of desealing is improved, and the fusion between the single yarns due to the unelution of the sea component is suppressed.
- the molecular motion of the sea component during melt spinning is enhanced, the orientation of the islands is easy to proceed, the orientation parameters of the islands are appropriate values, and the difference in yarn length is expressed, resulting in openness and bulkiness. It is preferable because it is excellent in. Even if the content of the polyalkylene glycol is larger than 15.0% by weight, the effect of improving the elution of the sea portion reaches a plateau.
- the intrinsic viscosity of the sea part polymer (hereinafter referred to as IV) is preferably 0.50 to 0.75.
- IV the intrinsic viscosity of the sea part polymer
- the IV of the marine polymer is 0.75 or less, the concentration of stress on the marine portion during spinning is suppressed and the stress on the island portion increases, so that the orientation parameter of each island portion becomes an appropriate value. It is preferable because the yarn length difference is exhibited and the raw yarn is excellent in openness and bulkiness.
- the IV of the more preferred marine polymer is 0.55 to 0.70.
- a copolymerization component other than the above may be copolymerized at 10 mol% or less with respect to each of the marine polymer and the island polymer as long as the object of the present invention is not impaired. Further, if necessary, inorganic fine particles such as titanium dioxide may be added as a matting agent, and silica fine particles or the like may be added as a lubricant.
- the cross-sectional shape of the island portion of the sea-island composite polyester fiber of the present invention is not particularly limited, and may be, for example, a round cross section, a flat cross section, a lens type cross section, or any other known irregular cross section.
- the number of islands in the sea-island composite polyester fiber of the present invention is preferably 12 to 432 islands per single yarn.
- the number of islands per single yarn is 12 or more, the islands can be arranged in the sea without gaps, and the morphological stability of the composite fiber is improved, which is preferable. Further, by setting the number of islands to 432 islands or less per single yarn, it is possible to avoid the fusion defect of the islands.
- the sea part is dissolved and removed, the difference in contact time between the surface layer and the inner layer of the composite fiber with the dissolving agent of the island part is reduced, so that the fiber diameter variation of the fiber obtained from the island part is small and high-strength microfiber can be obtained. Is possible.
- a more preferred range for the number of islands in the composite fiber is 32 to 192 islands per single yarn.
- the weight ratio occupied by the sea portion is preferably 10 to 30%.
- the weight ratio of the sea portion in the sea-island composite polyester fiber is more preferably 15 to 25%.
- the method for producing a sea-island composite polyester fiber of the present invention is a two-step method in which the discharged polymer is once wound as an undrawn yarn and then stretched to a predetermined breaking elongation with a normal stretching machine, or once. It can be manufactured by any one-step method in which stretching is continued without winding. However, in consideration of quality stability and production stability in the fiber longitudinal direction, the direct spinning and drawing method is the most excellent.
- an existing base for composite spinning can be used, but there are roughly three types of members, a measuring plate, a distribution plate, and a discharge plate described in Japanese Patent Application Laid-Open No. 2011-174215. It is preferable to use the laminated composite base because the sea-island composite fiber can be stably obtained.
- the orientation parameter of the island part in addition to the above-mentioned selection of the sea part polymer, it can be preferably controlled by the intrinsic viscosity ratio of the island part polymer and the conditions of cooling solidification.
- the intrinsic viscosity ratio of the polyester chips in the island is preferably 1.2 to 1.6, which is the value obtained by dividing the intrinsic viscosity of the high viscosity component by the intrinsic viscosity of the low viscosity component.
- the orientation parameter ratio becomes an appropriate value due to the difference in spinning stress applied to different islands, and a difference in yarn length is exhibited to obtain a raw yarn having excellent fiber opening and bulkiness.
- the intrinsic viscosity ratio is 1.6 or less, stress concentration on the high viscosity component is suppressed during spinning, the orientation parameter becomes an appropriate value, the shrinkage of the yarn is suppressed from increasing, and the quality is good. Can be a good fabric.
- the distance from the base discharge surface to the cooling surface is set to 250 to 450 mm in order to control the cooling solidification of the discharged polymer and set the orientation parameter ratio of different islands to an appropriate value. It is preferable to do so.
- the orientation of the islands is easily affected by the difference in viscosity during melting, and when the cooling start distance is 250 mm or more, the melting time is secured and the orientation difference between different island polymers is likely to occur. Is in the appropriate range. If the cooling start distance is long, the orientation parameter ratio becomes large, but if the cooling start distance is 450 mm or less, U% indicating thread spots in the longitudinal direction is a good value.
- the orientation parameter of the island part can be set to an appropriate value.
- the difference in thread length due to the difference in heat shrinkage is developed, and the fibrousness and bulkiness are improved when the cloth is made into a cloth, and the brushing uniformity which cannot be reached by the conventional thread is achieved.
- a sea-island composite polyester fiber capable of obtaining a raised thickness can be obtained.
- the sea-island composite polyester fiber of the present invention obtained as described above is preferably used for fabrics and clothing, and the fabric form can be selected according to the purpose such as woven fabric, knitted fabric, non-woven fabric, and clothing is also included.
- the fabric form can be selected according to the purpose such as woven fabric, knitted fabric, non-woven fabric, and clothing is also included.
- ⁇ is the viscosity of the polymer solution
- ⁇ 0 is the viscosity of OCP
- t is the drop time of the solution (seconds)
- d is the density of the solution (g / cm 3 )
- t0 is the drop time of OCP (seconds).
- D0 is the density of OCP (g / cm 3 ).
- the sample for orientation measurement was subjected to resin embedding (bisphenol epoxy resin, cured for 24 hours) and then sectioned by a microtome.
- the section thickness was 2.0 ⁇ m.
- the section sample was cut at a slight inclination from the fiber axis so that the cut surface became elliptical, and the measurement was performed by selecting a place where the thickness of the elliptical minor axis became a constant thickness.
- the measurement is performed in the microscopic mode, and the spot diameter of the laser at the sample position is 1 ⁇ m.
- the orientation was measured under polarized conditions.
- the band intensity ratio was calculated from the Raman band intensities obtained in each case under the vertical condition when the polarization direction was perpendicular to the fiber axis.
- the island diameter of the circle in contact with the portion of the fiber cross section that is convex toward the outside is calculated as the island diameter.
- Thread length difference The thread length difference was calculated by the following procedures (a) to (c).
- (A) Take one filament of sea-island composite polyester fiber with a length of 15 to 20 cm, tie it at two places with an interval of about 5 cm to make a mark, and tie both ends of the filament to an appropriate metal frame with a length of about 10 cm. Fixed.
- (B) The metal frame prepared in item (a) was immersed in a solution in which the sea portion of the easily eluted component can be eluted, and the sea portion was removed.
- a sodium hydroxide aqueous solution (concentration 1 g / L) was used as the alkaline aqueous solution.
- the alkaline aqueous solution was heated to 92 ° C. and the immersion time was 30 minutes. After that, the metal frame was taken out and the filament sample was washed with raw water.
- C After heat-treating for 1 minute in a dryer at 190 ° C. and allowing to cool, filament samples were cut along two knots, and the islands were decomposed using tweezers, and each island was measured.
- the length of the longest island was L2, the length of the shortest island was L1, and the thread length difference was calculated by the following formula (1).
- the load was measured by applying a load of 0.1 g / dtex.
- Thread length difference (%) (L2-L1) / L1 ⁇ 100 ... (1)
- an easily elution marine polymer contains a component copolymerized with 5-sodium sulfoisophthalic acid in an amount of 8.0 mol% and polyethylene glycol having a number average molecular weight of 1000 in an amount of 9.0% by weight.
- Elution polyethylene terephthalate (easy elution PET1) was prepared.
- the island A polymer, the island B polymer, and the sea polymer were all melted at 265 ° C., 280 ° C., and 280 ° C. using an extruder, then weighed with a pump, and the temperature was maintained at 275 ° C. as the spinning temperature. It was made to flow into the mouthpiece as it was.
- each polymer merges inside the mouthpiece, and the island polymer (island A polymer, island B polymer) is included in the sea part polymer, and the island part A (the first island indicated by reference numeral 1) as shown in FIG. 1 is included.
- Part) and island part B (second island part indicated by reference numeral 2) formed a composite form in which they were scattered and discharged from the base.
- the yarn discharged from the mouthpiece is cooled and solidified by an air cooling device so that the cooling start distance becomes 330 mm, then an oil agent is applied, and the yarn is picked up by a roll heated to 90 ° C. at a speed of 1200 m / min, and the magnification is 3.
- the Kaijima composite polyester fiber was additionally twisted at 800 T / m in the S direction using a double twister twisting machine, and then a steam twisting set at 75 ° C. for 30 minutes was carried out and used for woven fabric warping.
- a 56dtex-24 filament polytrimethylene terephthalate (PTT) / PET bimetal yarn was used as the weft.
- weaving was performed with a raw machine density (warp: 222 threads / inch, weft: 97 threads / inch) using an air jet loom with a 5-sheet satin structure.
- the obtained woven fabric was spread and continuously refined at 98 ° C., then subjected to a liquid flow relaxing treatment at 130 ° C., and an intermediate set was carried out at 180 ° C. Then, it was immersed in an aqueous sodium hydroxide solution (1 g / L) to carry out a desealing process.
- the obtained woven fabric was brushed with a needle cloth raising machine and then finished set at 160 ° C. to obtain a suede-like woven fabric.
- Table 1 shows the evaluation results of the obtained suede-like woven fabric.
- PET3 polyethylene terephthalate
- IV 0.56
- Example 7 0.82 copolymer polyethylene terephthalate obtained by copolymerizing 7.1 mol% and 4.4 mol% of isophthalic acid and bisphenol A ethylene oxide adduct as the island A polymer for forming the island A with respect to the total acid components, respectively.
- PET4 was prepared, and a sea-island composite polyester fiber having 70 dtex and 12 filaments was obtained by the same method as in Example 1 except that the intrinsic viscosity ratio was 1.60, and a suede-like woven fabric was obtained. The evaluation results are shown in Table 1.
- Example 8 As an easily elution marine polymer, it contains a component copolymerized with 5-sodium sulfoisophthalic acid in an amount of 8.0 mol% and polyethylene glycol having a number average molecular weight of 1000 in an amount of 9.0% by weight.
- a 70 dtex, 12-filament sea-island composite polyester fiber was obtained in the same manner as in Example 1 except that elution polyethylene terephthalate (easy elution PET2) was prepared, and a suede-like woven fabric was obtained. The evaluation results are shown in Table 2.
- Example 9 As an easily elution marine polymer, it contains a component copolymerized with 5-sodium sulfoisophthalic acid in an amount of 8.0 mol% and polyethylene glycol having a number average molecular weight of 1000 in an amount of 9.0% by weight.
- a 70 dtex, 12-filament sea-island composite polyester fiber was obtained in the same manner as in Example 1 except that elution polyethylene terephthalate (easy elution PET3) was prepared, and a suede-like woven fabric was obtained. The evaluation results are shown in Table 2.
- Example 10 As an easily elution marine polymer, it contains a component copolymerized with 5-sodium sulfoisophthalic acid in an amount of 8.0 mol% and polyethylene glycol having a number average molecular weight of 500 in an amount of 9.0% by weight.
- a 70 dtex, 12-filament sea-island composite polyester fiber was obtained in the same manner as in Example 1 except that elution polyethylene terephthalate (easy elution PET4) was prepared, and a suede-like woven fabric was obtained. The evaluation results are shown in Table 2.
- Example 11 As an easily elution marine polymer, it contains a component copolymerized with 5-sodium sulfoisophthalic acid in an amount of 8.0 mol% and polyethylene glycol having a number average molecular weight of 2000 in an amount of 9.0% by weight.
- a 70 dtex, 12-filament sea-island composite polyester fiber was obtained in the same manner as in Example 1 except that elution polyethylene terephthalate (easy elution PET5) was prepared, and a suede-like woven fabric was obtained. The evaluation results are shown in Table 2.
- Example 13 As an easily elution marine polymer, it contains a component copolymerized with 5-sodium sulfoisophthalic acid in an amount of 8.0 mol% and polyethylene glycol having a number average molecular weight of 1000 in an amount of 15.0% by weight.
- a 70 dtex, 12-filament sea-island composite polyester fiber was obtained in the same manner as in Example 1 except that elution polyethylene terephthalate (easy elution PET7) was prepared, and a suede-like woven fabric was obtained. The evaluation results are shown in Table 2.
- the Kaishima composite polyester fiber of Comparative Example 1 had a small fiber outer diameter of 0.8 ⁇ m after desealing, the suede-like woven fabric was lightly dyed as a whole and was inferior in dyeability.
- the Kaijima composite polyester fiber of Comparative Example 2 had a large fiber outer diameter of 7.5 ⁇ m after desealing, so that the suede-like woven fabric had a hard texture and was inferior in soft touch.
- PET5 polyethylene terephthalate
- IV 0.60
- the sea-island composite polyester fiber of Comparative Example 3 has a low ratio (orientation parameter ratio) of the orientation parameter of the maximum orientation component to the orientation parameter of the minimum orientation component and a small difference in yarn length.
- the brushed thickness and brushed uniformity of the woven fabric were inferior.
- the Kaijima composite polyester fiber of Comparative Example 4 had a high orientation parameter and orientation parameter ratio of the maximum orientation component, and the shrinkage of the yarn was too large, so that the texture of the suede-like woven fabric became hard and the soft touch property was inferior.
- Example 5 As an easily elution marine polymer, it contains a component copolymerized with 5-sodium sulfoisophthalic acid in an amount of 8.0 mol% and polyethylene glycol having a number average molecular weight of 1000 in an amount of 9.0% by weight.
- a 70 dtex, 12-filament sea-island composite polyester fiber was obtained in the same manner as in Example 1 except that elution polyethylene terephthalate (easy elution PET8) was prepared, and a suede-like woven fabric was obtained. The evaluation results are shown in Table 3.
- the Kaijima composite polyester fiber of Comparative Example 5 had a high orientation parameter and orientation parameter ratio of the maximum orientation component, and the shrinkage of the yarn was too large, so that the texture of the suede-like woven fabric became hard and the soft touch property was inferior.
- Example 6 As an easily elution marine polymer, it contains a component copolymerized with 5-sodium sulfoisophthalic acid in an amount of 8.0 mol% and polyethylene glycol having a number average molecular weight of 1000 in an amount of 9.0% by weight.
- a 70 dtex, 12-filament sea-island composite polyester fiber was obtained in the same manner as in Example 1 except that elution polyethylene terephthalate (easy elution PET9) was prepared, and a suede-like woven fabric was obtained. The evaluation results are shown in Table 3.
- the Kaijima composite polyester fiber of Comparative Example 6 was inferior in the raised thickness and raised uniformity of the suede-like woven fabric because the orientation parameter of the maximum orientation component was low and the difference in yarn length was small.
- Example 7 As an easily elution marine polymer, it contains a component copolymerized with 5-sodium sulfoisophthalic acid in an amount of 8.0 mol% and polyethylene glycol having a number average molecular weight of 4000 in an amount of 9.0% by weight.
- a 70 dtex, 12-filament sea-island composite polyester fiber was obtained in the same manner as in Example 1 except that elution polyethylene terephthalate (easy elution PET10) was prepared, and a suede-like woven fabric was obtained. The evaluation results are shown in Table 3.
- the Kaijima composite polyester fiber of Comparative Example 7 was inferior in the raised thickness and raised uniformity of the suede-like woven fabric because the orientation parameter of the maximum orientation component was low and the difference in yarn length was small. In addition, the strength of the yarn was low, and the durability of the suede-like woven fabric was inferior.
- the Kaijima composite polyester fiber of Comparative Example 8 was inferior in the raised thickness and raised uniformity of the suede-like woven fabric because the orientation parameter of the maximum orientation component was low and the difference in yarn length was small.
- the Kaijima composite polyester fiber of Comparative Example 9 was inferior in the raised thickness and raised uniformity of the suede-like woven fabric because the orientation parameter and the orientation parameter ratio of the maximum orientation component were low and the difference in yarn length was small. In addition, the strength of the yarn was low, and the durability of the suede-like woven fabric was inferior.
- Example 10 A 70 dtex, 12-filament sea-island composite polyester fiber was obtained in the same manner as in Example 1 except that the cooling start distance of the yarn discharged from the mouthpiece was set to 200 mm, and a suede-like woven fabric was obtained. The evaluation results are shown in Table 3.
- the sea-island composite polyester fiber of Comparative Example 10 was inferior in the raised thickness and raised uniformity of the suede-like woven fabric because the orientation parameter of the maximum orientation component was low and the difference in yarn length was small.
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Abstract
Description
<1>海部と2種類以上の異なる島部を持つ海島構造を有し、前記島部の外径が1.0~7.0μmであり、前記島部の、最小配向成分の配向パラメータに対する最大配向成分の配向パラメータの比(最大配向パラメータ/最小配向パラメータ)が1.03~1.15であり、かつ前記最大配向成分の配向パラメータが4.0~8.5である海島複合ポリエステル繊維。
<2>前記海島複合ポリエステル繊維を下記条件でアルカリ処理して乾熱処理した後の、下記式(1)で表される前記島部の糸長差が15~40%である、上記<1>記載の海島複合ポリエステル繊維。
アルカリ処理条件:水酸化ナトリウム水溶液(濃度1g/L)、92℃、30分、無荷重
乾熱処理条件:190℃、1分、無荷重
糸長差(%)=(L2-L1)/L1×100 ・・・(1)
(式(1)中、L1は一番短い島部の長さ、L2は一番長い島部の長さである。)
<3>前記海部が金属スルホネート基を有するイソフタル酸またはその誘導体とポリアルキレングリコールとを共重合した共重合ポリエステルからなる、上記<1>または<2>に記載の海島複合ポリエステル繊維。
なお、本明細書において「~」で表される数値範囲は、その前後の数値を下限値及び上限値として含む意味で使用される。
本発明の海島複合ポリエステル繊維を構成するポリマーは少なくとも3成分を含み、そのうちの1成分は海部を構成する易溶出性ポリマーである。島部は配向パラメータの異なる少なくとも2種類の難溶解性ポリマーからなり、アルカリ処理と乾熱処理による脱海(海部ポリマーの除去)後、糸長差を有する。これにより、得られた繊維は開繊性と嵩高性に優れた極細繊維となる。
バンド強度比=I1615垂直/I1730垂直
配向パラメータ=-4.3143×バンド強度比+12.711(ポリエステル系ポリマーの一軸延伸フィルムの解析結果を検量データとして用い、線形相関をとった際の近似式)
また、高配向、低配向とは、2種類以上の島部のうち、他の島部と比較して相対的に高かったり低かったりすることをいう。
アルカリ処理条件:水酸化ナトリウム水溶液(濃度1g/L)、92℃、30分、無荷重
乾熱処理条件:190℃、1分、無荷重
脱海処理後の島部の糸長差が15%以上であると、布帛の起毛工程にて単糸が引き出されやすくなるため、毛足が長くなり、嵩高性が向上し、布帛の起毛厚みが良好となる。糸長差が40%以下であると、布帛全体の収縮による風合いの低下(粗剛感)が抑えられ、品位の良い布帛となる。脱海処理後の島部の糸長差は、より好ましくは20~35%である。
糸長差(%)=(L2-L1)/L1×100 ・・・(1)
本発明の海島複合ポリエステル繊維の製造方法は、吐出されたポリマーを、一旦未延伸糸として巻き取った後、通常の延伸機で所定の破断伸度となるように延伸する2工程法、または一旦巻き取ることなく引き続き延伸を行う1工程法のいずれによっても製造することができる。但し、繊維長手方向での品質安定性、生産安定性を考慮すると、直接紡糸延伸法による生産が最も優れている。
下記式(2)よりポリマーの固有粘度を算出した。
式(2)中の相対粘度ηrは、純度98%以上のO-クロロフェノール(OCP)10mL中に試料ポリマーを0.8g溶かし、25℃の温度にてオストワルド粘度計を用いて下記式(3)により求めた。
固有粘度(IV)=0.0242ηr+0.2634 ・・・(2)
ηr=η/η0=(t×d)/(t0×d0) ・・・(3)
[式(3)中、ηはポリマー溶液の粘度、η0はOCPの粘度、tは溶液の落下時間(秒)、dは溶液の密度(g/cm3)、t0はOCPの落下時間(秒)、d0はOCPの密度(g/cm3)である。]
繊維試料を、レーザーラマン分光法にて測定し、1615cm-1付近に認められるポリエチレンテレフタレート(PET)の炭素-炭素二重結合(C=C)の伸縮に由来するラマンバンドの繊維軸と直交する偏光方位での強度と、1730cm-1付近に認められるPETの炭素-酸素二重結合(C=O)の伸縮に由来するラマンバンドの繊維軸と直交する偏光方位でのバンド強度からバンド強度比を算出し、一軸延伸PETフィルムのC=C伸縮およびC=O伸縮の繊維軸と直交する偏光方位のバンド強度比の解析結果を検量データとして用い、バンド強度比を配向パラメータに換算して出力した。
バンド強度比=I1615垂直/I1730垂直
配向パラメータ=-4.3143×バンド強度比+12.711(一軸延伸PETフィルムの解析結果を検量データとして用い、線形相関をとった際の近似式)
(レーザーラマン分光法)
装置; T-64000(Joobin Yvon/(株)堀場ジョバンイボン製)
条件; 測定モード;顕微ラマン
対物レンズ; ×100
ビーム径; 1μm
光源; Ar+レーザー/514.5nm
レーザーパワー; 50mW
回折格子; Single 1800gr/mm
スリット; 100μm
検出器; CCD/Jobin Yvon 1024×256
繊維試料の横断面をエポキシ樹脂で包埋し、ダイヤモンドナイフを具備したReichert-Nissei ultracut N(ウルトラミクロトーム)で切削した。その後、切削面をキーエンス(株)製マイクロスコープVHX-2000を用いて撮影し、得られた写真から単糸を無作為に5本抽出し、単糸あたり4個(n=4)の各島について長径を測定し、合計20個(n=20)の島径の算術平均を平均島径とした。また、島が異形断面の場合には、繊維断面形状の外側に向かって凸となっている部分と接する円の直径を島径として算出した。
JIS L1013-2010-引張強さ及び伸び率に準じて繊維試料を測定し、引張強さ-伸び曲線を描いた。試験条件としては、試験機の種類は定速伸長形、つかみ間隔50cm、引張速度50cm/分にて行った。なお、切断時の引張強さが最高強さより小さい場合は、最高引張強さおよびそのときの伸びを測定した。強度は、下記式にて求めた。
伸度=切断時の伸長(%)
強度=切断時の引張強さ(cN)/繊度(dtex)
繊維試料を、温度25℃、湿度55%RHの雰囲気下で単位長さ当たりの重量を測定し、その値から10,000mに相当する重量を算出した。これを10回繰り返して測定し、その単純平均値の小数点以下を四捨五入した値を繊度とした。
下記(a)~(c)の手順にて糸長差を算出した。
(a)長さ15~20cmの海島複合ポリエステル繊維のフィラメント1本を採取し、間隔約5cmにて2箇所結んで印をつけ、フィラメントの両端を長さ10cm程度の適当な金属枠に結んで固定した。
(b)易溶出成分の海部が溶出可能である溶液に(a)項で準備した金属枠を浸漬して海部を除去した。易溶出成分が金属スルホネート基を有するイソフタル酸またはその誘導体とポリアルキレングリコールとを組み合わせた共重合ポリエステルの場合には、アルカリ水溶液として水酸化ナトリウム水溶液(濃度1g/L)を用いた。また、アルカリ水溶液は92℃まで加熱し、浸漬時間は30分とした。その後金属枠を取り出し、原水にてフィラメントサンプルを洗浄した。
(c)190℃の乾燥機にて1分熱処理し、放冷後、結び目2箇所に沿ってフィラメントサンプルをカットし、ピンセットを用いて単島を分解して、各島部を測定した。一番長い島部の長さをL2、一番短い島部の長さをL1とし、下記式(1)にて糸長差を算出した。糸の長さ測定時、荷重は0.1g/dtexの荷重をかけて測定した。
糸長差(%)=(L2-L1)/L1×100 ・・・(1)
(a)起毛厚み
起毛厚みはJIS L1096-2010、8.4厚さ(A法)に準じて、スエード調織物の任意の5ヶ所の厚さを測定し、その平均値を算出した。0.16mm以上を起毛厚み合格とした。
スエード調織物について、繊維表面をキーエンス(株)製マイクロスコープVHX-2000にて観察し、検査者(5人)が評価した起毛均一性の結果を相対評価した。その結果は、各検査者の評価点の平均値をとり小数点以下は四捨五入して、平均値が、5をS、4をA、3をB、1~2をCとした。S、Aを起毛均一性合格とした。
<評価基準>
5点:非常に優れる
4点:やや優れる
3点:普通
2点:やや劣る
1点:劣る
スエード調織物について、風合い評価の経験豊富な検査者(5人)が評価したソフトタッチ性の結果を相対評価した。その結果は、各検査者の評価点の平均値をとり小数点以下は四捨五入して、平均値が、5をS、4をA、3をB、1~2をCとした。S、Aをソフトタッチ性合格とした。
<評価基準>
5点:非常に優れる
4点:やや優れる
3点:普通
2点:やや劣る
1点:劣る
分散染料を使用して染色したスエード調織物について、検査者(5人)が評価した染色性(濃染性)の結果を相対評価した。その結果は、各検査者の評価点の平均値をとり小数点以下は四捨五入して、平均値が、5をS、4をA、3をB、1~2をCとした。S、Aを染色性合格とした。
(染色条件)
染料; DinanixNavy S-2G200% 0.3%o.w.f.
染色助剤; Tetrosin PEC 5.0%o.w.f.
SunSalt 1.0%o.w.f.
浴比; 1:100
染色; 50℃で15分処理した後、1.6℃/分の速度で昇温し、98℃で20分処理する。
<評価基準>
5点:全体的に濃く染まっており、非常に優れる
4点:やや優れる
3点:普通
2点:やや劣る
1点:全体的に淡染であり、劣る
(海島複合ポリエステル繊維の製造)
島部A形成用の島部Aポリマーとしてイソフタル酸およびビスフェノールAエチレンオキサイド付加物を全酸成分に対してそれぞれ7.1mol%、4.4mol%共重合したIV=0.67の共重合ポリエチレンテレフタレート(PET1)を、島部B形成用の島部BポリマーとしてIV=0.51のポリエチレンテレフタレート(PET2)を準備し、固有粘度比が1.31となるようにした。易溶出性の海部ポリマーとして5-ナトリウムスルホイソフタル酸を8.0mol%、数平均分子量1000のポリエチレングリコールを9.0重量%となるように共重合した成分を含むIV=0.69のアルカリ易溶出性ポリエチレンテレフタレート(易溶出PET1)を準備した。
次に海島複合ポリエステル繊維をダブルツイスター撚糸機を用いて、S方向に800T/mで追撚を施し、その後75℃×30分のスチーム撚止めセットを実施し、織物整経に用いた。緯糸には56dtex-24フィラメントのポリトリメチレンテレフタレート(PTT)/PETバイメタル糸を用いた。
これらの経糸と緯糸を用いて、5枚サテン組織でエアージェット織機を用い、生機密度(経糸:222本/inch、緯糸:97本/inch)で製織した。次に、得られた製織生地を98℃で拡布連続精錬した後、130℃で液流リラックス処理を施し、180℃で中間セットを実施した。その後、水酸化ナトリウム水溶液(1g/L)中に浸漬し、脱海加工を実施した。得られた織物を針布起毛機で起毛加工を施した後、160℃で仕上げセットを施し、スエード調の織物を得た。得られたスエード調織物について、評価した結果を表1に示す。
単糸あたりの島数が108島(島部A=54島、島部B=54島)となるように口金を変更した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表1に示す。
単糸あたりの島数が22島(島部A=11島、島部B=11島)となるように口金を変更した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表1に示す。
単糸あたりの島数が432島(島部A=216島、島部B=216島)となるように口金を変更した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表1に示す。
単糸あたりの島数が12島(島部A=6島、島部B=6島)となるように口金を変更した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表1に示す。
島部B形成用の島部BポリマーとしてIV=0.56のポリエチレンテレフタレート(PET3)を準備し、固有粘度比が1.20となるようにした以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表1に示す。
島部A形成用の島部Aポリマーとしてイソフタル酸およびビスフェノールAエチレンオキサイド付加物を全酸成分に対してそれぞれ7.1mol%、4.4mol%共重合したIV=0.82の共重合ポリエチレンテレフタレート(PET4)を準備し、固有粘度比が1.60となるようにした以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表1に示す。
易溶出性の海部ポリマーとして5-ナトリウムスルホイソフタル酸を8.0mol%、数平均分子量1000のポリエチレングリコールを9.0重量%となるように共重合した成分を含むIV=0.50のアルカリ易溶出性ポリエチレンテレフタレート(易溶出PET2)を準備した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表2に示す。
易溶出性の海部ポリマーとして5-ナトリウムスルホイソフタル酸を8.0mol%、数平均分子量1000のポリエチレングリコールを9.0重量%となるように共重合した成分を含むIV=0.75のアルカリ易溶出性ポリエチレンテレフタレート(易溶出PET3)を準備した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表2に示す。
易溶出性の海部ポリマーとして5-ナトリウムスルホイソフタル酸を8.0mol%、数平均分子量500のポリエチレングリコールを9.0重量%となるように共重合した成分を含むIV=0.69のアルカリ易溶出性ポリエチレンテレフタレート(易溶出PET4)を準備した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表2に示す。
易溶出性の海部ポリマーとして5-ナトリウムスルホイソフタル酸を8.0mol%、数平均分子量2000のポリエチレングリコールを9.0重量%となるように共重合した成分を含むIV=0.69のアルカリ易溶出性ポリエチレンテレフタレート(易溶出PET5)を準備した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表2に示す。
易溶出性の海部ポリマーとして5-ナトリウムスルホイソフタル酸を8.0mol%、数平均分子量1000のポリエチレングリコールを5.0重量%となるように共重合した成分を含むIV=0.69のアルカリ易溶出性ポリエチレンテレフタレート(易溶出PET6)を準備した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表2に示す。
易溶出性の海部ポリマーとして5-ナトリウムスルホイソフタル酸を8.0mol%、数平均分子量1000のポリエチレングリコールを15.0重量%となるように共重合した成分を含むIV=0.69のアルカリ易溶出性ポリエチレンテレフタレート(易溶出PET7)を準備した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表2に示す。
単糸あたりの島数が720島(島部A=360島、島部B=360島)となるように口金を変更した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表3に示す。
単糸あたりの島数が8島(島部A=4島、島部B=4島)となるように口金を変更した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表3に示す。
島部B形成用の島部BポリマーとしてIV=0.60のポリエチレンテレフタレート(PET5)を準備し、固有粘度比が1.12となるようにした以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表3に示す。
島部A形成用の島部Aポリマーとしてイソフタル酸およびビスフェノールAエチレンオキサイド付加物を全酸成分に対してそれぞれ7.1mol%、4.4mol%共重合したIV=0.90の共重合ポリエチレンテレフタレート(PET6)を準備し、固有粘度比が1.76となるようにした以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表3に示す。
易溶出性の海部ポリマーとして5-ナトリウムスルホイソフタル酸を8.0mol%、数平均分子量1000のポリエチレングリコールを9.0重量%となるように共重合した成分を含むIV=0.40のアルカリ易溶出性ポリエチレンテレフタレート(易溶出PET8)を準備した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表3に示す。
易溶出性の海部ポリマーとして5-ナトリウムスルホイソフタル酸を8.0mol%、数平均分子量1000のポリエチレングリコールを9.0重量%となるように共重合した成分を含むIV=0.80のアルカリ易溶出性ポリエチレンテレフタレート(易溶出PET9)を準備した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表3に示す。
易溶出性の海部ポリマーとして5-ナトリウムスルホイソフタル酸を8.0mol%、数平均分子量4000のポリエチレングリコールを9.0重量%となるように共重合した成分を含むIV=0.69のアルカリ易溶出性ポリエチレンテレフタレート(易溶出PET10)を準備した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表3に示す。
易溶出性の海部ポリマーとして5-ナトリウムスルホイソフタル酸を8.0mol%、数平均分子量1000のポリエチレングリコールを3.0重量%となるように共重合した成分を含むIV=0.69のアルカリ易溶出性ポリエチレンテレフタレート(易溶出PET11)を準備した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表3に示す。
易溶出性の海部ポリマーとして5-ナトリウムスルホイソフタル酸を5.0mol%となるように共重合した成分を含むIV=0.55のアルカリ易溶出性ポリエチレンテレフタレート(易溶出PET12)を準備した以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表3に示す。
口金から吐出された糸条の冷却開始距離を200mmとした以外は実施例1と同様の方法で、70dtex、12フィラメントの海島複合ポリエステル繊維を得、スエード調織物を得た。評価結果を表3に示す。
2:第2島部(島部B)
Claims (3)
- 海部と2種類以上の異なる島部を持つ海島構造を有し、前記島部の外径が1.0~7.0μmであり、前記島部の、最小配向成分の配向パラメータに対する最大配向成分の配向パラメータの比(最大配向パラメータ/最小配向パラメータ)が1.03~1.15であり、かつ前記最大配向成分の配向パラメータが4.0~8.5である海島複合ポリエステル繊維。
- 前記海島複合ポリエステル繊維を下記条件でアルカリ処理して乾熱処理した後の、下記式(1)で表される前記島部の糸長差が15~40%である、請求項1記載の海島複合ポリエステル繊維。
アルカリ処理条件:水酸化ナトリウム水溶液(濃度1g/L)、92℃、30分、無荷重
乾熱処理条件:190℃、1分、無荷重
糸長差(%)=(L2-L1)/L1×100 ・・・(1)
(式(1)中、L1は一番短い島部の長さ、L2は一番長い島部の長さである。) - 前記海部が金属スルホネート基を有するイソフタル酸またはその誘導体とポリアルキレングリコールとを共重合した共重合ポリエステルからなる、請求項1または2に記載の海島複合ポリエステル繊維。
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS551354A (en) * | 1978-06-21 | 1980-01-08 | Toray Ind Inc | Three component conjugate fiber |
JPS6414321A (en) * | 1987-07-01 | 1989-01-18 | Toray Industries | Polyester ternary conjugate fiber |
JPH0770827A (ja) * | 1993-06-16 | 1995-03-14 | Toray Ind Inc | ポリエステル系3成分複合繊維 |
JPH09279418A (ja) * | 1996-04-16 | 1997-10-28 | Toray Ind Inc | 3成分系複合繊維 |
JPH1088473A (ja) * | 1996-09-12 | 1998-04-07 | Toray Ind Inc | 高密度嵩高布帛の製造方法 |
JP2000328359A (ja) * | 1999-05-10 | 2000-11-28 | Toray Ind Inc | ポリエステル混繊糸の製造方法 |
JP2011157647A (ja) * | 2010-01-29 | 2011-08-18 | Teijin Fibers Ltd | ワイピングクロス |
JP2015183343A (ja) * | 2014-03-26 | 2015-10-22 | 東レ株式会社 | 海島型多成分複合繊維 |
-
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- 2021-11-10 WO PCT/JP2021/041432 patent/WO2022107671A1/ja active Application Filing
- 2021-11-10 CN CN202180077364.8A patent/CN116490649A/zh active Pending
- 2021-11-18 TW TW110142903A patent/TW202235711A/zh unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS551354A (en) * | 1978-06-21 | 1980-01-08 | Toray Ind Inc | Three component conjugate fiber |
JPS6414321A (en) * | 1987-07-01 | 1989-01-18 | Toray Industries | Polyester ternary conjugate fiber |
JPH0770827A (ja) * | 1993-06-16 | 1995-03-14 | Toray Ind Inc | ポリエステル系3成分複合繊維 |
JPH09279418A (ja) * | 1996-04-16 | 1997-10-28 | Toray Ind Inc | 3成分系複合繊維 |
JPH1088473A (ja) * | 1996-09-12 | 1998-04-07 | Toray Ind Inc | 高密度嵩高布帛の製造方法 |
JP2000328359A (ja) * | 1999-05-10 | 2000-11-28 | Toray Ind Inc | ポリエステル混繊糸の製造方法 |
JP2011157647A (ja) * | 2010-01-29 | 2011-08-18 | Teijin Fibers Ltd | ワイピングクロス |
JP2015183343A (ja) * | 2014-03-26 | 2015-10-22 | 東レ株式会社 | 海島型多成分複合繊維 |
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