JP2022538459A - Bicomponent thermoplastic polyurethane fibers and fabrics made therefrom - Google Patents
Bicomponent thermoplastic polyurethane fibers and fabrics made therefrom Download PDFInfo
- Publication number
- JP2022538459A JP2022538459A JP2021578016A JP2021578016A JP2022538459A JP 2022538459 A JP2022538459 A JP 2022538459A JP 2021578016 A JP2021578016 A JP 2021578016A JP 2021578016 A JP2021578016 A JP 2021578016A JP 2022538459 A JP2022538459 A JP 2022538459A
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- JP
- Japan
- Prior art keywords
- thermoplastic polyurethane
- fabric
- core
- astm
- sheath
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
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- 239000004433 Thermoplastic polyurethane Substances 0.000 title claims abstract description 89
- 229920002803 thermoplastic polyurethane Polymers 0.000 title claims abstract description 89
- 239000000835 fiber Substances 0.000 title claims abstract description 73
- 239000004744 fabric Substances 0.000 title claims description 34
- 229920000728 polyester Polymers 0.000 claims abstract description 35
- 230000004927 fusion Effects 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 22
- 239000004970 Chain extender Substances 0.000 claims description 14
- 239000007795 chemical reaction product Substances 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- PTIXVVCRANICNC-UHFFFAOYSA-N butane-1,1-diol;hexanedioic acid Chemical compound CCCC(O)O.OC(=O)CCCCC(O)=O PTIXVVCRANICNC-UHFFFAOYSA-N 0.000 claims description 7
- OPZZWWFHZYZBRU-UHFFFAOYSA-N butanedioic acid;butane-1,1-diol Chemical compound CCCC(O)O.OC(=O)CCC(O)=O OPZZWWFHZYZBRU-UHFFFAOYSA-N 0.000 claims description 7
- 239000000155 melt Substances 0.000 claims description 6
- 239000002759 woven fabric Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 2
- 239000005056 polyisocyanate Substances 0.000 description 14
- 229920001228 polyisocyanate Polymers 0.000 description 14
- 239000000543 intermediate Substances 0.000 description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- 125000005442 diisocyanate group Chemical group 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 4
- 239000004971 Cross linker Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 125000001931 aliphatic group Chemical group 0.000 description 4
- 150000001991 dicarboxylic acids Chemical class 0.000 description 4
- 150000002009 diols Chemical class 0.000 description 4
- 150000002334 glycols Chemical class 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 3
- 238000002074 melt spinning Methods 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- HJIAMFHSAAEUKR-UHFFFAOYSA-N (2-hydroxyphenyl)-phenylmethanone Chemical compound OC1=CC=CC=C1C(=O)C1=CC=CC=C1 HJIAMFHSAAEUKR-UHFFFAOYSA-N 0.000 description 2
- RTTZISZSHSCFRH-UHFFFAOYSA-N 1,3-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC(CN=C=O)=C1 RTTZISZSHSCFRH-UHFFFAOYSA-N 0.000 description 2
- 239000005059 1,4-Cyclohexyldiisocyanate Substances 0.000 description 2
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 description 2
- 229940043375 1,5-pentanediol Drugs 0.000 description 2
- ICLCCFKUSALICQ-UHFFFAOYSA-N 1-isocyanato-4-(4-isocyanato-3-methylphenyl)-2-methylbenzene Chemical compound C1=C(N=C=O)C(C)=CC(C=2C=C(C)C(N=C=O)=CC=2)=C1 ICLCCFKUSALICQ-UHFFFAOYSA-N 0.000 description 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-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
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- -1 cycloaliphatic Chemical group 0.000 description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- AYLRODJJLADBOB-QMMMGPOBSA-N methyl (2s)-2,6-diisocyanatohexanoate Chemical compound COC(=O)[C@@H](N=C=O)CCCCN=C=O AYLRODJJLADBOB-QMMMGPOBSA-N 0.000 description 2
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 description 2
- 229920001610 polycaprolactone Polymers 0.000 description 2
- 229920005906 polyester polyol Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 2
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 description 1
- KMOUUZVZFBCRAM-OLQVQODUSA-N (3as,7ar)-3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione Chemical compound C1C=CC[C@@H]2C(=O)OC(=O)[C@@H]21 KMOUUZVZFBCRAM-OLQVQODUSA-N 0.000 description 1
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 1
- ALQLPWJFHRMHIU-UHFFFAOYSA-N 1,4-diisocyanatobenzene Chemical compound O=C=NC1=CC=C(N=C=O)C=C1 ALQLPWJFHRMHIU-UHFFFAOYSA-N 0.000 description 1
- OVBFMUAFNIIQAL-UHFFFAOYSA-N 1,4-diisocyanatobutane Chemical compound O=C=NCCCCN=C=O OVBFMUAFNIIQAL-UHFFFAOYSA-N 0.000 description 1
- 229940008841 1,6-hexamethylene diisocyanate Drugs 0.000 description 1
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- YZGMIRBFYCQNRH-UHFFFAOYSA-N 2-(2-hydroxyethyl)benzene-1,3-diol Chemical compound OCCC1=C(O)C=CC=C1O YZGMIRBFYCQNRH-UHFFFAOYSA-N 0.000 description 1
- WMRCTEPOPAZMMN-UHFFFAOYSA-N 2-undecylpropanedioic acid Chemical compound CCCCCCCCCCCC(C(O)=O)C(O)=O WMRCTEPOPAZMMN-UHFFFAOYSA-N 0.000 description 1
- SXFJDZNJHVPHPH-UHFFFAOYSA-N 3-methylpentane-1,5-diol Chemical compound OCCC(C)CCO SXFJDZNJHVPHPH-UHFFFAOYSA-N 0.000 description 1
- JRQLZCFSWYQHPI-UHFFFAOYSA-N 4,5-dichloro-2-cyclohexyl-1,2-thiazol-3-one Chemical compound O=C1C(Cl)=C(Cl)SN1C1CCCCC1 JRQLZCFSWYQHPI-UHFFFAOYSA-N 0.000 description 1
- UUAGPGQUHZVJBQ-UHFFFAOYSA-N Bisphenol A bis(2-hydroxyethyl)ether Chemical compound C=1C=C(OCCO)C=CC=1C(C)(C)C1=CC=C(OCCO)C=C1 UUAGPGQUHZVJBQ-UHFFFAOYSA-N 0.000 description 1
- 102100024482 Cell division cycle-associated protein 4 Human genes 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- 101100383112 Homo sapiens CDCA4 gene Proteins 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000005662 Paraffin oil Substances 0.000 description 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- NBJODVYWAQLZOC-UHFFFAOYSA-L [dibutyl(octanoyloxy)stannyl] octanoate Chemical compound CCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCC NBJODVYWAQLZOC-UHFFFAOYSA-L 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- BJFLSHMHTPAZHO-UHFFFAOYSA-N benzotriazole Chemical compound [CH]1C=CC=C2N=NN=C21 BJFLSHMHTPAZHO-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910000416 bismuth oxide Inorganic materials 0.000 description 1
- QVYARBLCAHCSFJ-UHFFFAOYSA-N butane-1,1-diamine Chemical compound CCCC(N)N QVYARBLCAHCSFJ-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 239000001030 cadmium pigment Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical class [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000001031 chromium pigment Substances 0.000 description 1
- UOUJSJZBMCDAEU-UHFFFAOYSA-N chromium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Cr+3].[Cr+3] UOUJSJZBMCDAEU-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
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- 239000003086 colorant Substances 0.000 description 1
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- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 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
- FOTKYAAJKYLFFN-UHFFFAOYSA-N decane-1,10-diol Chemical compound OCCCCCCCCCCO FOTKYAAJKYLFFN-UHFFFAOYSA-N 0.000 description 1
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- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- KORSJDCBLAPZEQ-UHFFFAOYSA-N dicyclohexylmethane-4,4'-diisocyanate Chemical compound C1CC(N=C=O)CCC1CC1CCC(N=C=O)CC1 KORSJDCBLAPZEQ-UHFFFAOYSA-N 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
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- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
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- 239000004615 ingredient Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
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- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
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Images
Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/70—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyurethanes
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- 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
- D01F8/16—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/292—Conjugate, i.e. bi- or multicomponent, fibres or filaments
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/56—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads elastic
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/18—Other fabrics or articles characterised primarily by the use of particular thread materials elastic threads
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/4358—Polyurethanes
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43825—Composite fibres
- D04H1/43828—Composite fibres sheath-core
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/009—Condensation or reaction polymers
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/10—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyurethanes
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Abstract
本発明は、二成分繊維に関し、繊維はコアおよびシース構造を有する。二成分繊維は、２つの異なるポリエステル熱可塑性ポリウレタンから作製され、透明度が向上し、収縮が少ない繊維を提供する。本発明は、コアおよびシース構造を有する二成分繊維に関し、二成分繊維は、（ａ）ＡＳＴＭ Ｄ３４１８に従って測定された少なくとも５０Ｊ／ｇの溶融エンタルピーを有する第１のポリエステル熱可塑性ポリウレタンを含むコアと、（ｂ）ＡＳＴＭ Ｄ３４１８に従って測定された５Ｊ／ｇ以下の溶融エンタルピーを有する第２のポリエステル熱可塑性ポリウレタンを含むシースとを備える。The present invention relates to bicomponent fibers, the fibers having a core and sheath structure. Bicomponent fibers are made from two different polyester thermoplastic polyurethanes to provide fibers with improved clarity and less shrinkage. The present invention relates to a bicomponent fiber having a core and sheath construction, the bicomponent fiber comprising (a) a core comprising a first polyester thermoplastic polyurethane having an enthalpy of fusion of at least 50 J/g measured according to ASTM D3418; (b) a sheath comprising a second polyester thermoplastic polyurethane having an enthalpy of fusion of 5 J/g or less measured according to ASTM D3418;
Description
本技術は、二成分繊維およびそれから作製された布地、特に、独特の特性を有する繊維を提供するために２つの異なる熱可塑性ポリウレタンから作製されたコアシース繊維に関する。 The present technology relates to bicomponent fibers and fabrics made therefrom, particularly core-sheath fibers made from two different thermoplastic polyurethanes to provide fibers with unique properties.
本発明は、コアおよびシース構造を有する二成分繊維に関し、二成分繊維は、（ａ）ＡＳＴＭ Ｄ３４１８に従って測定された少なくとも５０Ｊ／ｇの溶融エンタルピーを有する第１のポリエステル熱可塑性ポリウレタンを含むコアと、（ｂ）ＡＳＴＭ Ｄ３４１８に従って測定された５Ｊ／ｇ以下の溶融エンタルピーを有する第２のポリエステル熱可塑性ポリウレタンを含むシースとを備える。
本発明はまた、本発明の二成分繊維から作製された布地に関する。
The present invention relates to a bicomponent fiber having a core and sheath construction, the bicomponent fiber comprising (a) a core comprising a first polyester thermoplastic polyurethane having an enthalpy of fusion of at least 50 J/g measured according to ASTM D3418; (b) a sheath comprising a second polyester thermoplastic polyurethane having an enthalpy of fusion of 5 J/g or less measured according to ASTM D3418;
The invention also relates to fabrics made from the bicomponent fibers of the invention.
本明細書で使用される「二成分繊維」という用語は、少なくとも２つの溶融紡糸可能な成分の共役生成物を指し、共役生成物は、少なくとも２つの異なる縦方向に同一の広がりを有するポリマーセグメントを有する。一実施形態では、本発明の二成分繊維は、繊維の長さに沿って互いに密接に接着された２つの異なるポリマー材料を含み、その結果、繊維断面は、例えばコア－シース配置である。 As used herein, the term "bicomponent fiber" refers to a conjugated product of at least two melt-spinnable components, wherein the conjugated product comprises at least two different longitudinally coextensive polymer segments have In one embodiment, the bicomponent fibers of the present invention comprise two different polymeric materials intimately adhered to each other along the length of the fiber so that the fiber cross-section is, for example, a core-sheath arrangement.
本発明の二成分繊維は、２つの異なるポリエステル熱可塑性ポリウレタンから作製される。熱可塑性ポリウレタンは、一般に、ポリイソシアネートをポリオール中間体、および任意選択で鎖延長剤と反応させることによって調製され、これらはすべて当業者に周知である。 The bicomponent fibers of this invention are made from two different polyester thermoplastic polyurethanes. Thermoplastic polyurethanes are generally prepared by reacting a polyisocyanate with a polyol intermediate and, optionally, a chain extender, all of which are well known to those skilled in the art.
本発明の二成分繊維は、それぞれが異なるポリエステルポリオール中間体に基づく２つの異なる熱可塑性ポリウレタン材料を使用する。ヒドロキシル末端ポリエステル中間体は、一般に、約５００～約１０，０００、好ましくは約７００～約５，０００、好ましくは約７００～約４，０００の数平均分子量（Ｍｎ）、一般に１．３未満、好ましくは０．８未満の酸価を有する線状ポリエステルである。分子量は、末端官能基のアッセイによって決定され、数平均分子量に関連している。これらのポリエステルポリオールは、（１）１つ以上のグリコールと１つ以上のジカルボン酸もしくは無水物とのエステル化反応、または（２）エステル交換反応、すなわち１つ以上のグリコールとジカルボン酸のエステルとの反応によって生成される。末端ヒドロキシル基が優勢な線状鎖を得るためには、一般に、グリコールの酸に対するモル比が１モルを超えることが好ましい。また、好適なポリエステル中間体としては、ε－カプロラクトンおよび二官能性開始剤、例えばジエチレングリコールから典型的には作製されるポリカプロラクトン等の様々なラクトンが挙げられる。所望のポリエステルのジカルボン酸は、脂肪族、脂環式、芳香族、またはそれらの組み合わせであり得る。単独または混合物で使用され得る好適なジカルボン酸は、一般に、合計４～１５個の炭素原子を有し、コハク酸、グルタル酸、アジピン酸、ピメリン酸、スベリン酸、アゼライン酸、セバシン酸、ドデカン二酸、イソフタル酸、テレフタル酸、シクロヘキサンジカルボン酸などが含まれる。無水フタル酸、無水テトラヒドロフタル酸などの上記のジカルボン酸の無水物も使用することができる。反応して望ましいポリエステル中間体を形成するグリコールは、脂肪族、芳香族、またはそれらの組み合わせであってもよく、合計で２～１２個の炭素原子を有し、エチレングリコール、１，２－プロパンジオール、１，３－プロパンジオール、１，３－ブタンジオール、１，４－ブタンジオール、１，５－ペンタンジオール、１，６－ヘキサンジオール、２，２－ジメチル－１，３－プロパンジオール、１，４－シクロヘキサンジメタノール、デカメチレングリコール、ドデカメチレングリコール等が含まれる。 The bicomponent fibers of the present invention employ two different thermoplastic polyurethane materials, each based on a different polyester polyol intermediate. The hydroxyl-terminated polyester intermediate generally has a number average molecular weight (Mn) of from about 500 to about 10,000, preferably from about 700 to about 5,000, preferably from about 700 to about 4,000, generally less than 1.3, Linear polyesters having an acid number of less than 0.8 are preferred. Molecular weights are determined by terminal functional group assays and are related to number average molecular weights. These polyester polyols are prepared by (1) an esterification reaction of one or more glycols with one or more dicarboxylic acids or anhydrides, or (2) a transesterification reaction, i.e., an ester of one or more glycols with a dicarboxylic acid. generated by the reaction of To obtain linear chains with a predominance of terminal hydroxyl groups, it is generally preferred that the molar ratio of glycol to acid is greater than 1 mol. Suitable polyester intermediates also include various lactones such as ε-caprolactone and difunctional initiators such as polycaprolactone, which is typically made from diethylene glycol. The desired polyester dicarboxylic acids can be aliphatic, cycloaliphatic, aromatic, or combinations thereof. Suitable dicarboxylic acids, which may be used alone or in mixtures, generally have a total of 4 to 15 carbon atoms and include succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, dodecane dicarboxylic acid. Acids, isophthalic acid, terephthalic acid, cyclohexanedicarboxylic acid, and the like. Anhydrides of the above dicarboxylic acids such as phthalic anhydride and tetrahydrophthalic anhydride can also be used. The glycols that react to form the desired polyester intermediates can be aliphatic, aromatic, or combinations thereof, have a total of 2 to 12 carbon atoms, ethylene glycol, 1,2-propane, Diol, 1,3-propanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 2,2-dimethyl-1,3-propanediol, 1,4-cyclohexanedimethanol, decamethylene glycol, dodecamethylene glycol and the like are included.
一実施形態では、本発明の繊維は、コハク酸ブタンジオールをベースとした第１の熱可塑性ポリウレタンと、アジピン酸ブタンジオールをベースとした第２の熱可塑性ポリウレタンとを含む。 In one embodiment, the fibers of the present invention comprise a first thermoplastic polyurethane based on butanediol succinate and a second thermoplastic polyurethane based on butanediol adipate.
本発明で使用される熱可塑性ポリウレタンは、ポリイソシアネート成分を使用して作製される。いくつかの実施形態では、ポリイソシアネート成分は１つ以上のジイソシアネートを含む。有用なポリイソシアネートは、芳香族ポリイソシアネートまたは脂肪族ポリイソシアネートまたはそれらの組み合わせから選択され得る。有用なポリイソシアネートの例には、芳香族ジイソシアネート、例えば４，４’－メチレンビス（フェニルイソシアネート）（ＭＤＩ）、ｍ－キシレンジイソシアネート（ＸＤＩ）、フェニレン－１，４－ジイソシアネート、３，３’－ジメチル－４，４’－ビフェニレンジイソシアネート（ＴＯＤＩ）、１，５－ナフタレンジイソシアネート（ＮＤＩ）、およびトルエンジイソシアネート（ＴＤＩ）、ならびに脂肪族ジイソシアネート、例えばイソホロンジイソシアネート（ＩＰＤＩ）、１，６－ヘキサメチレンジイソシアネート（ＨＤＩ）、１，４－シクロヘキシルジイソシアネート（ＣＨＤＩ）、デカン－１，１０－ジイソシアネート、リジンジイソシアネート（ＬＤＩ）、１，４－ブタンジイソシアネート（ＢＤＩ）、およびジシクロヘキシルメタン－４，４’－ジイソシアネート（Ｈ１２ＭＤＩ）が含まれるが、これらに限定されない。いくつかの実施形態では、２つ以上のポリイソシアネートの混合物が使用され得る。 The thermoplastic polyurethanes used in this invention are made using a polyisocyanate component. In some embodiments, the polyisocyanate component includes one or more diisocyanates. Useful polyisocyanates may be selected from aromatic polyisocyanates or aliphatic polyisocyanates or combinations thereof. Examples of useful polyisocyanates include aromatic diisocyanates such as 4,4'-methylenebis(phenylisocyanate) (MDI), m-xylene diisocyanate (XDI), phenylene-1,4-diisocyanate, 3,3'-dimethyl -4,4′-biphenylene diisocyanate (TODI), 1,5-naphthalene diisocyanate (NDI) and toluene diisocyanate (TDI), and aliphatic diisocyanates such as isophorone diisocyanate (IPDI), 1,6-hexamethylene diisocyanate (HDI) ), 1,4-cyclohexyl diisocyanate (CHDI), decane-1,10-diisocyanate, lysine diisocyanate (LDI), 1,4-butane diisocyanate (BDI), and dicyclohexylmethane-4,4′-diisocyanate (H12MDI). including but not limited to: In some embodiments, mixtures of two or more polyisocyanates may be used.
いくつかの実施形態では、ポリイソシアネート成分は、１つ以上の芳香族ジイソシアネートを含むか、またはそれからなる。いくつかの実施形態では、ポリイソシアネート成分は、脂肪族ジイソシアネートを本質的に含まないか、またはさらに完全に含まない。 In some embodiments, the polyisocyanate component comprises or consists of one or more aromatic diisocyanates. In some embodiments, the polyisocyanate component is essentially free or even completely free of aliphatic diisocyanates.
本明細書に記載の熱可塑性ポリウレタン組成物は、任意選択で、鎖延長剤成分を使用して作製される。連鎖延長剤としては、ジオール、ジアミン、およびそれらの組み合わせを挙げることができる。 The thermoplastic polyurethane compositions described herein are optionally made using a chain extender component. Chain extenders can include diols, diamines, and combinations thereof.
好適な連鎖延長剤は、比較的小さなポリヒドロキシ化合物、例えば、２～２０個、または２～１２個、または２～１０個の炭素原子を有する低級脂肪族または短鎖グリコールを含む。好適な例としては、エチレングリコール、ジエチレングリコール、プロピレングリコール、ジプロピレングリコール、１，４－ブタンジオール（ＢＤＯ）、１，６－ヘキサンジオール（ＨＤＯ）、１，３－ブタンジオール、１，５－ペンタンジオール、ネオペンチルグリコール、１，４－シクロヘキサンジメタノール（ＣＨＤＭ）、２，２－ビス［４－（２－ヒドロキシエトキシ）フェニル］プロパン（ＨＥＰＰ）、ヘキサメチレンジオール、ヘプタンジオール、ノナンジオール、ドデカンジオール、３－メチル－１，５－ペンタンジオール、エチレンジアミン、ブタンジアミン、ヘキサメチレンジアミン、およびヒドロキシエチルレゾルシノール（ＨＥＲ）等、ならびにそれらの混合物が挙げられる。 Suitable chain extenders include relatively small polyhydroxy compounds such as lower aliphatic or short chain glycols having 2 to 20, or 2 to 12, or 2 to 10 carbon atoms. Suitable examples include ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,4-butanediol (BDO), 1,6-hexanediol (HDO), 1,3-butanediol, 1,5-pentane Diol, neopentyl glycol, 1,4-cyclohexanedimethanol (CHDM), 2,2-bis[4-(2-hydroxyethoxy)phenyl]propane (HEPP), hexamethylenediol, heptanediol, nonanediol, dodecanediol , 3-methyl-1,5-pentanediol, ethylenediamine, butanediamine, hexamethylenediamine, and hydroxyethylresorcinol (HER), and the like, and mixtures thereof.
上記の３つの必要な成分（ヒドロキシル末端中間体、ポリイソシアネート、および鎖延長剤）は、好ましくは、触媒の存在下で反応させる。 The above three necessary components (hydroxyl-terminated intermediate, polyisocyanate, and chain extender) are preferably reacted in the presence of a catalyst.
一般に、任意の従来の触媒を利用して、ジイソシアネートをヒドロキシル末端中間体または鎖延長剤と反応させることができ、これは当技術分野および文献において周知である。好適な触媒の例としては、ビスマスまたはスズの様々なアルキルエーテルまたはアルキルチオールエーテルが挙げられ、アルキル部分は１～約２０個の炭素原子を有し、特定の例としては、オクタン酸ビスマス、ラウリン酸ビスマス等が挙げられる。好ましい触媒には、オクタン酸第一スズ、ジオクタン酸ジブチルスズ、ジラウリン酸ジブチルスズ等の様々なスズ触媒が含まれる。そのような触媒の量は、一般に、ポリウレタン形成モノマーの総重量に基づいて、約２０～約２００パーツパーミリオンのように少量である。 Generally, any conventional catalyst can be utilized to react the diisocyanate with the hydroxyl-terminated intermediate or chain extender and is well known in the art and literature. Examples of suitable catalysts include various alkyl or alkyl thiol ethers of bismuth or tin, the alkyl portion having from 1 to about 20 carbon atoms, specific examples being bismuth octoate, laurin Bismuth oxide and the like can be mentioned. Preferred catalysts include various tin catalysts such as stannous octoate, dibutyltin dioctoate, dibutyltin dilaurate, and the like. The amount of such catalyst is generally small, such as from about 20 to about 200 parts per million, based on the total weight of polyurethane-forming monomers.
本発明の熱可塑性ポリウレタンは、当技術分野および文献において周知の従来の重合方法のいずれかによって作製され得る。 The thermoplastic polyurethanes of the present invention can be made by any of the conventional polymerization methods well known in the art and literature.
本発明の熱可塑性ポリウレタンは、好ましくは、すべての成分が同時にまたは実質的に同時に加熱された押出機に加えられ、反応してポリウレタンを形成する「ワンショット」プロセスを介して作製される。ヒドロキシル末端中間体およびジオール鎖延長剤の総当量に対するジイソシアネートの当量比は、一般に、約０．９５～約１．１０、望ましくは約０．９７～約１．０３、好ましくは約０．９７～約１．００である。本発明において有用な熱可塑性ポリウレタンの分子量（Ｍｗ）は、ポリスチレン標準と比較して、ＧＰＣによって測定された約５０，０００ダルトン～約３００，０００ダルトン、例えば５０，０００ダルトン～約１００，０００ダルトンであってもよい。一実施形態では、本発明の二成分繊維のシースに使用される熱可塑性ポリウレタンは、約５０，０００ダルトン～７５，０００ダルトンの分子量を有する。一実施形態では、本発明の二成分繊維のコアに使用される熱可塑性ポリウレタンは、約８０，０００ダルトン～約１００，０００ダルトンの分子量を有する。 The thermoplastic polyurethanes of the present invention are preferably made via a "one-shot" process in which all ingredients are added simultaneously or substantially simultaneously to a heated extruder and react to form the polyurethane. The equivalent ratio of diisocyanate to total equivalents of hydroxyl-terminated intermediate and diol chain extender is generally from about 0.95 to about 1.10, desirably from about 0.97 to about 1.03, preferably from about 0.97 to about 1.00. The molecular weight (Mw) of thermoplastic polyurethanes useful in the present invention is from about 50,000 Daltons to about 300,000 Daltons, such as from 50,000 Daltons to about 100,000 Daltons, as measured by GPC, compared to polystyrene standards. may be In one embodiment, the thermoplastic polyurethane used in the sheath of the bicomponent fibers of the present invention has a molecular weight of about 50,000 Daltons to 75,000 Daltons. In one embodiment, the thermoplastic polyurethane used in the core of the bicomponent fibers of the present invention has a molecular weight of from about 80,000 Daltons to about 100,000 Daltons.
熱可塑性ポリウレタンはまた、プレポリマープロセスを利用して調製され得る。プレポリマー経路において、ヒドロキシル末端中間体は、一般に、１つ以上のポリイソシアネートの当量過剰と反応して、その中に遊離または未反応のポリイソシアネートを有するプレポリマー溶液を形成する。続いて、上記のように、一般にイソシアネート末端基および任意の遊離または未反応のジイソシアネート化合物と等しい当量で、選択的な種類の鎖延長剤が添加される。したがって、ヒドロキシル末端中間体および鎖延長剤の総当量に対する全ジイソシアネートの全当量比は、約０．９５～約１．１０、望ましくは約０．９８～約１．０５、好ましくは約０．９９～約１．０３である。典型的には、プレポリマー経路は、任意の従来のデバイスで行うことができ、押出機が好ましい。したがって、ヒドロキシル末端中間体は、押出機の最初の部分で当量過剰のジイソシアネートと反応してプレポリマー溶液を形成し、続いて鎖延長剤が下流部分で添加され、プレポリマー溶液と反応する。任意の従来の押出機を利用することができ、押出機は、少なくとも２０、好ましくは少なくとも２５の長さに対する直径の比を有するバリアスクリューを備える。 Thermoplastic polyurethanes can also be prepared using prepolymer processes. In the prepolymer route, the hydroxyl-terminated intermediate is generally reacted with an equivalent excess of one or more polyisocyanates to form a prepolymer solution with free or unreacted polyisocyanate therein. Subsequently, the optional type of chain extender is added, generally in equivalent amounts equal to the isocyanate end groups and any free or unreacted diisocyanate compounds, as described above. Thus, the ratio of total equivalents of all diisocyanates to total equivalents of hydroxyl-terminated intermediates and chain extenders is from about 0.95 to about 1.10, desirably from about 0.98 to about 1.05, preferably about 0.99. ~ about 1.03. Typically, the prepolymer route can be carried out in any conventional device, with extruders being preferred. Thus, a hydroxyl-terminated intermediate is reacted with an equivalent excess of diisocyanate in the first section of the extruder to form a prepolymer solution, followed by addition of chain extender in a downstream section to react with the prepolymer solution. Any conventional extruder can be utilized, the extruder being equipped with a barrier screw having a diameter to length ratio of at least 20, preferably at least 25.
有用な添加剤は、好適な量で利用することができ、不透明化顔料、着色剤、鉱物充填剤、安定剤、潤滑剤、ＵＶ吸収剤、加工助剤、および所望により他の添加剤を含む。有用な不透明化顔料は、二酸化チタン、酸化亜鉛、およびチタネートイエローを含み、一方有用な着色顔料は、カーボンブラック、黄色酸化物、褐色酸化物、生および燃焼シエナまたはアンバー、酸化クロムグリーン、カドミウム顔料、クロム顔料、および他の混合金属酸化物ならびに有機顔料を含む。有用な充填剤は、珪藻土（スーパーフロス）粘土、シリカ、タルク、マイカ、珪灰石、硫酸バリウム、および炭酸カルシウムを含む。所望により、酸化防止剤等の有用な安定剤を使用することができ、これはフェノール系酸化防止剤を含み、一方有用な光安定剤は、有機リン酸塩および有機スズチオレート（メルカプチド）を含む。有用な潤滑剤は、ステアリン酸金属、パラフィン油、アミドワックス等を含む。有用なＵＶ吸収剤は、２－（２’－ヒドロキシフェノール）ベンゾトリアゾールおよび２－ヒドロキシベンゾフェノンを含む。 Useful additives are available in suitable amounts and include opacifying pigments, colorants, mineral fillers, stabilizers, lubricants, UV absorbers, processing aids, and other additives as desired. . Useful opacifying pigments include titanium dioxide, zinc oxide, and titanate yellow, while useful coloring pigments include carbon black, yellow oxides, brown oxides, raw and burnt sienna or amber, chromium oxide greens, cadmium pigments. , chromium pigments, and other mixed metal oxides and organic pigments. Useful fillers include diatomaceous earth (superfloss) clay, silica, talc, mica, wollastonite, barium sulfate, and calcium carbonate. If desired, useful stabilizers such as antioxidants can be used, which include phenolic antioxidants, while useful light stabilizers include organophosphates and organotin thiolates (mercaptides). Useful lubricants include metal stearates, paraffin oil, amide waxes, and the like. Useful UV absorbers include 2-(2'-hydroxyphenol)benzotriazole and 2-hydroxybenzophenone.
可塑剤添加剤はまた、特性に影響を与えることなく硬度を低下させるために有利に利用することができる。 Plasticizer additives can also be used advantageously to reduce hardness without affecting properties.
本発明の二成分連続フィラメントは、溶融紡糸プロセスを使用して作製することができる。図１は、一対の押出機を使用した典型的な二成分溶融紡糸技術を示す。二成分繊維を作製するためのステップは、８０℃で１２時間の真空バッチ乾燥、ホッパーから押出機への乾燥熱可塑性ポリウレタンポリマーの供給、１．２４インチの単軸および２４のＬ／Ｄを有するそれぞれの押出機での第１および第２の熱可塑性ポリウレタン組成物の溶融、ならびにメルトポンプによる２つの供給システム／導管を使用した押し出し、次いで紡糸口金またはダイへの押し出しを含む。押出機出口の背圧は、ループ制御で一定に維持された。押出機は、１８０℃～２２０℃の間に維持された４つの加熱ゾーンを有していた。基本システムは、２つの供給システム、スピンパックへの２つのポリマー、およびダイに両方のポリマーを量り取るための分配システムで構成される。二成分または多成分フィラメントを製造するための紡糸口金は業界において知られていることは、当業者によって理解されるべきである。そのようなプロセスは、参照により本明細書に組み込まれる米国特許第５，１６２，０７４号に記載されている。典型的には、紡糸口金は、ポリマーが流れるためのパターンを形成するためのスピンパック、複数のプレートを含むケーシングを含む。二成分連続フィラメント紡糸口金はまた、対称（同心）コア／シース、非対称コア／シース、並列、三日月形等の所望の断面を有するように押出物用に構成され得る。さらに、複数の押出機を追加して、コンポーネントの数を増やすことができる。 The bicomponent continuous filaments of the present invention can be made using a melt spinning process. FIG. 1 shows a typical bicomponent melt spinning technique using a pair of extruders. The steps to make the bicomponent fibers have vacuum batch drying at 80° C. for 12 hours, feed dry thermoplastic polyurethane polymer from hopper to extruder, 1.24 inch single shaft and 24 L/D. It involves melting the first and second thermoplastic polyurethane compositions in respective extruders and extruding using two feed systems/conduits by melt pumps and then extrusion into a spinneret or die. Back pressure at the extruder exit was kept constant by loop control. The extruder had four heating zones maintained between 180°C and 220°C. The basic system consists of two feed systems, two polymers to the spin packs, and a dispensing system to meter both polymers to the die. It should be understood by those skilled in the art that spinnerets for producing bicomponent or multicomponent filaments are known in the art. Such a process is described in US Pat. No. 5,162,074, incorporated herein by reference. Typically, a spinneret includes a casing containing a plurality of plates, a spin pack for forming a pattern for polymer flow. Bicomponent continuous filament spinnerets can also be configured for extrudates to have desired cross-sections such as symmetrical (concentric) core/sheath, asymmetrical core/sheath, parallel, crescent, and the like. Additionally, multiple extruders can be added to increase the number of components.
繊維が紡糸口金を出ると、ボビンに巻く前に冷却される。繊維はゴデットのセットを通過し、仕上げオイルが塗布され、繊維は別のゴデットのセットに進む。 As the fibers exit the spinneret, they are cooled before being wound onto bobbins. The fiber passes through a set of godets, a finishing oil is applied, and the fiber proceeds to another set of godets.
いくつかの実施形態では、溶融紡糸プロセス中に、上記の熱可塑性ポリウレタンを架橋剤で架橋することができる。架橋剤は、一般に、ポリイソシアネートと反応したポリエーテル、ポリエステル、ポリカーボネート、ポリカプロラクトン、またはそれらの混合物であるヒドロキシル末端中間体のプレポリマーである。架橋剤（場合によってはプレポリマーとも呼ばれる）は、しばしば、約１．０を超える、好ましくは約１．０～約３．０、より好ましくは約１．８～約２．２のイソシアネート官能価を有するであろう。 In some embodiments, the thermoplastic polyurethanes described above can be crosslinked with a crosslinker during the melt spinning process. Crosslinkers are generally prepolymers of hydroxyl-terminated intermediates that are polyethers, polyesters, polycarbonates, polycaprolactones, or mixtures thereof reacted with polyisocyanates. Crosslinkers (sometimes referred to as prepolymers) often have an isocyanate functionality greater than about 1.0, preferably from about 1.0 to about 3.0, more preferably from about 1.8 to about 2.2. would have
本発明の一実施形態では、二成分繊維は、架橋剤を使用せずに形成される。この実施形態では、コア熱可塑性ポリウレタンおよびシース熱可塑性ポリウレタンの両方が架橋していない。 In one embodiment of the invention, bicomponent fibers are formed without the use of crosslinkers. In this embodiment, both the core thermoplastic polyurethane and the sheath thermoplastic polyurethane are uncrosslinked.
本発明の二成分繊維は、様々なデニールで作製され得る。デニールは、繊維サイズを示す当技術分野の用語である。デニールは、繊維長９０００メートルのグラム単位の重量です。本発明の二成分繊維は、典型的には、２０～２５００デニール、例えば２０～６００デニール、さらに例えば、４０～４００デニールの範囲のサイズで作製される。 The bicomponent fibers of the present invention can be made in various denier. Denier is a term of the art that indicates fiber size. Denier is the weight in grams of a fiber length of 9000 meters. The bicomponent fibers of the invention are typically made in sizes ranging from 20 to 2500 denier, such as 20 to 600 denier, more such as 40 to 400 denier.
二成分繊維が本発明の方法によって作製される場合、仕上げ油（例えばシリコーン油）等の耐粘着性添加剤は、通常、冷却後または冷却中、およびボビンに巻かれる直前に繊維の表面に添加される。 When bicomponent fibers are made by the method of the present invention, anti-stick additives such as finishing oils (e.g. silicone oils) are typically added to the surface of the fibers after or during cooling and just prior to being wound onto bobbins. be done.
本発明による二成分繊維は、コアおよびシース構造を有し、二成分繊維は、第１のポリエステル熱可塑性ポリウレタンを含むコアであって、第１のポリエステル熱可塑性ポリウレタンは、ＡＳＴＭ Ｄ３４１８（ＤＳＣ、第２の熱サイクル）に従って測定された少なくとも約５０Ｊ／ｇ、例えば約６０Ｊ／ｇの溶融エンタルピーを有する、コアと、第２のポリエステル熱可塑性ポリウレタンを含むシースであって、第２のポリエステル熱可塑性ポリウレタンは、ＡＳＴＭ Ｄ３４１８（ＤＳＣ、第２の熱サイクル）に従って測定される約５Ｊ／ｇ以下の溶融エンタルピーを有する、シースとを有する。この二成分繊維の一実施形態では、第１のポリエステル熱可塑性ポリウレタンは、ＡＳＴＭ Ｄ１００３に従って測定される４％以下の接触透明度を有する。この二成分繊維の別の実施形態では、第２のポリエステル熱可塑性ポリウレタンは、ＡＳＴＭ Ｄ１００３に従って測定された少なくとも１２％の接触透明度を有する。 A bicomponent fiber according to the present invention has a core and sheath structure, the bicomponent fiber being a core comprising a first polyester thermoplastic polyurethane, the first polyester thermoplastic polyurethane being ASTM D3418 (DSC, No. a sheath comprising a core and a second polyester thermoplastic polyurethane, wherein the second polyester thermoplastic polyurethane has a melting enthalpy of about 5 J/g or less measured according to ASTM D3418 (DSC, second thermal cycle); and a sheath. In one embodiment of this bicomponent fiber, the first polyester thermoplastic polyurethane has a contact clarity of 4% or less measured according to ASTM D1003. In another embodiment of this bicomponent fiber, the second polyester thermoplastic polyurethane has a contact clarity of at least 12% measured according to ASTM D1003.
本発明の二成分繊維は、コア熱可塑性ポリウレタンおよびシース熱可塑性ポリウレタンを含み、コアおよびシース熱可塑性ポリウレタン材料は互いに異なる。一実施形態では、コア熱可塑性ポリウレタンは、コハク酸ブタンジオールおよび芳香族ジイソシアネートの反応生成物を含み、一方シース熱可塑性ポリウレタンは、アジピン酸ブタンジオール、芳香族ジイソシアネート、および少なくとも１つの鎖延長グリコールの反応生成物を含む。 The bicomponent fibers of the present invention comprise a core thermoplastic polyurethane and a sheath thermoplastic polyurethane, the core and sheath thermoplastic polyurethane materials being different from each other. In one embodiment, the core thermoplastic polyurethane comprises the reaction product of butanediol succinate and an aromatic diisocyanate, while the sheath thermoplastic polyurethane comprises butanediol adipate, an aromatic diisocyanate, and at least one chain-extending glycol. Contains reaction products.
本発明において、二成分繊維は、約１０重量％～約３５重量％のコア熱可塑性ポリウレタン組成物、および約６５重量％～約９０重量％の第２の熱可塑性ポリウレタンを含む。 In the present invention, bicomponent fibers comprise from about 10% to about 35% by weight of a core thermoplastic polyurethane composition and from about 65% to about 90% by weight of a second thermoplastic polyurethane.
本発明の一実施形態では、最終的な二成分繊維は、収縮が低く、透明度が良好である。いくつかの用途では、７０℃で９０秒の暴露後に約２０％未満の収縮を有し、ＡＳＴＭ Ｄ１００３に従って測定された約１３％を超える接触透明度を有する二成分繊維を有することが望ましい。本発明は、驚くべきことに、異なる収縮および透明度特性を有する２つの異なる熱可塑性ポリウレタン材料を組み合わせることによって、これらの特性を提供する。一実施形態では、コアは、ＡＳＴＭ Ｄ３４１８に従って測定された少なくとも５０Ｊ／ｇの溶融エンタルピー、およびＡＳＴＭ Ｄ１００３に従って測定される約４％以下の接触透明度を有する熱可塑性ポリウレタン組成物を含み、シースは、ＡＳＴＭ Ｄ３４１８（ＤＳＣ、第２の熱サイクル）に従って測定された約５Ｊ／ｇ以下の溶融エンタルピー、およびＡＳＴＭ Ｄ１００３に従って測定された少なくとも１２％の接触透明度を有する熱可塑性ポリウレタン組成物を含む。別の実施形態では、コア熱可塑性ポリウレタンは、７０℃で９０秒の曝露後に約１０％未満の収縮を有し、一方シース熱可塑性ポリウレタンは、７０℃で９０秒の曝露後に約４０％～約６０％の収縮を有する。収縮は、１メートルの長さの繊維を使用し、高温への曝露の前後で測定することによって測定される。２つの測定値の違いが収縮である。 In one embodiment of the invention, the final bicomponent fiber has low shrinkage and good clarity. In some applications, it is desirable to have bicomponent fibers that have shrinkage of less than about 20% after exposure at 70°C for 90 seconds and contact clarity of greater than about 13% measured according to ASTM D1003. The present invention surprisingly provides these properties by combining two different thermoplastic polyurethane materials with different shrinkage and clarity properties. In one embodiment, the core comprises a thermoplastic polyurethane composition having a melt enthalpy of at least 50 J/g measured according to ASTM D3418 and a contact clarity of about 4% or less measured according to ASTM D1003, and the sheath comprises ASTM A thermoplastic polyurethane composition having a melt enthalpy of about 5 J/g or less measured according to D3418 (DSC, second thermal cycle) and a contact clarity of at least 12% measured according to ASTM D1003. In another embodiment, the core thermoplastic polyurethane has a shrinkage of less than about 10% after exposure at 70°C for 90 seconds, while the sheath thermoplastic polyurethane has a shrinkage of from about 40% to about 10% after exposure at 70°C for 90 seconds. It has a shrinkage of 60%. Shrinkage is measured by using a one meter length of fiber and measuring before and after exposure to elevated temperature. The difference between the two measurements is the shrinkage.
本発明はまた、本発明の二成分繊維を含む布地を含む。一実施形態では、布地は二成分繊維を含み、二成分繊維はコアおよびシース構造を有し、コアは、ＡＳＴＭ Ｄ３４１８（ＤＳＣ、第２の熱サイクル）に従って測定された少なくとも約５０Ｊ／ｇ、例えば約６０Ｊ／ｇの溶融エンタルピー、およびＡＳＴＭ Ｄ１００３に従って測定された４％以下の接触透明度を有する熱可塑性ポリウレタン組成物を含み、シースは、ＡＳＴＭ Ｄ３４１８（ＤＳＣ、第２の熱サイクル）に従って測定された少なくとも約５Ｊ／ｇ以下の溶融エンタルピー、およびＡＳＴＭ Ｄ１００３に従って測定された少なくとも約１２％の接触透明度を有する熱可塑性ポリウレタン組成物を含む。一実施形態では、コア熱可塑性ポリウレタン組成物は、７０℃で９０秒の曝露後に約１０％未満の収縮を有し、シース熱可塑性ポリウレタン組成物は、７０℃で９０秒の曝露後に約４０％～約６０％の収縮を有する。本発明による布地では、二成分繊維は、１０：９０～３５：６５．５のコア対シース比を含む。 The invention also includes fabrics comprising the bicomponent fibers of the invention. In one embodiment, the fabric comprises bicomponent fibers, the bicomponent fibers having a core and sheath structure, the core having at least about 50 J/g, measured according to ASTM D3418 (DSC, Second Thermal Cycle), e.g. A thermoplastic polyurethane composition having a melt enthalpy of about 60 J/g and a contact clarity of 4% or less measured according to ASTM D1003, wherein the sheath comprises at least A thermoplastic polyurethane composition having a melt enthalpy of about 5 J/g or less and a contact clarity of at least about 12% measured according to ASTM D1003. In one embodiment, the core thermoplastic polyurethane composition has a shrinkage of less than about 10% after exposure at 70°C for 90 seconds and the sheath thermoplastic polyurethane composition has a shrinkage of about 40% after exposure at 70°C for 90 seconds. It has a shrinkage of ~60%. In fabrics according to the invention, the bicomponent fibers comprise a core to sheath ratio of 10:90 to 35:65.5.
別の実施形態では、本発明の布地は、７０℃で９０秒の曝露後に約２０％未満の収縮を有し、ＡＳＴＭ Ｄ１００３に従って測定された約１３％を超える接触透明度を有する二成分繊維を含む。布地に使用される二成分繊維はまた、ＤＳＣによって測定された１００℃～１２０℃の溶融範囲を有し得る。 In another embodiment, the fabrics of the present invention comprise bicomponent fibers that have a shrinkage of less than about 20% after exposure for 90 seconds at 70°C and a contact clarity of greater than about 13% measured according to ASTM D1003. . Bicomponent fibers used in fabrics may also have a melting range of 100°C to 120°C as measured by DSC.
本発明の繊維を使用して作製された布地は、編みまたは織りによって作製することができる。いくつかの実施形態において、布地は、本発明の二成分繊維を、ナイロンおよび／またはポリエステル等の他の繊維と共に使用することによって作製することができる。本発明の布地は、スポーツアパレル用途などの衣服を作製するために使用することができる。本発明の繊維の強化された透明度はまた、グラフィックが布地に適用される用途に利益を提供する。 Fabrics made using the fibers of the present invention can be made by knitting or weaving. In some embodiments, fabrics can be made by using the bicomponent fibers of the present invention with other fibers such as nylon and/or polyester. The fabrics of the present invention can be used to make garments such as sports apparel applications. The enhanced clarity of the fibers of the present invention also provides benefits for applications where graphics are applied to fabrics.
本発明は、以下の実施例を参照することによってよりよく理解されるであろう。 The invention will be better understood by reference to the following examples.
表１に記載されている熱可塑性ポリウレタンに基づいてフィラメントを調製した。ＴＰＵ １は、コハク酸ブタンジオールおよび芳香族ジイソシアネートの反応生成物を含むポリエステル熱可塑性ポリウレタンであり、ＤＳＣ、第２の熱サイクルにより測定された６０Ｊ／ｇの溶融エンタルピーを有する。ＴＰＵ ２は、アジピン酸ブタンジオール、芳香族ジイソシアネート、および鎖延長ジオールの反応生成物を含むポリエステル熱可塑性ポリウレタンであり、ＤＳＣ、第２の熱サイクルにより測定された５Ｊ／ｇの溶融エンタルピーを有する。比較例Ｃ１～Ｃ９は、一方のＴＰＵ材料１００％、またはＴＰＵ１およびＴＰＵ２のペレットのブレンドのいずれかから作製して単一成分フィラメントを形成した。本発明の実施例１～４は、コア－シース断面を有する二成分繊維である。繊維を成功裏に作製できたら、１メートルの長さの繊維を使用して、７０℃の温度への９０秒間の曝露前後に測定し、これらの収縮を試験した。
上記のデータが示すように、２つの非適合性の熱可塑性ポリウレタンのブレンドは、許容され得る収縮および透明度の両方を備えた連続フィラメントを形成できなかった。しかしながら、同じ２つの熱可塑性ポリウレタン組成物の二成分繊維は、予想外にも高い透明度および低い収縮の両方を提供した。 As the above data show, blends of two incompatible thermoplastic polyurethanes failed to form continuous filaments with both acceptable shrinkage and clarity. However, bicomponent fibers of the same two thermoplastic polyurethane compositions unexpectedly provided both high clarity and low shrinkage.
実施例を除き、または特に明示的に示されている場合を除き、物質の量、反応条件、分子量、炭素原子の数等を指定する本明細書における全ての数量は、「約」という単語によって修飾されるものとして理解されたい。本明細書に記載の量、範囲、および比率の上限および下限は、独立して組み合わせてもよいことを理解されたい。同様に、本発明の各要素の範囲及び量は、任意の他の要素の範囲又は量とともに使用することができる。 Except in the examples or where otherwise explicitly indicated, all quantities herein designating amounts of materials, reaction conditions, molecular weights, number of carbon atoms, etc. are defined by the word "about" It should be understood as modified. It is to be understood that the upper and lower limits of amounts, ranges, and ratios set forth herein may be independently combined. Similarly, the ranges and amounts for each element of the invention can be used together with ranges or amounts for any of the other elements.
本明細書で使用される場合、「含む（ｉｎｃｌｕｄｉｎｇ）」、「含有する（ｃｏｎｔａｉｎｉｎｇ）」、または「を特徴とする（ｃｈａｒａｃｔｅｒｉｚｅｄ ｂｙ）」と同義である「含む（ｃｏｍｐｒｉｓｉｎｇ）」という移行句は、包括的またはオープンエンドであり、追加の、列挙されていない要素または方法ステップを除外しない。しかしながら、本明細書の「含む（ｃｏｍｐｒｉｓｉｎｇ）」の各列挙において、この用語は、代替実施形態として、「から本質的になる（ｃｏｎｓｉｓｔｉｎｇ ｅｓｓｅｎｔｉａｌｌｙ ｏｆ）」および「からなる（ｃｏｎｓｉｓｔｉｎｇ ｏｆ）」という語句も包含することを意図しており、ここで、「からなる」は、指定されていない任意の要素またはステップを除外し、「から本質的になる」は、考慮されている組成物または方法の本質的または基本的および新規の特徴に実質的に影響を与えない追加の列挙されていない要素またはステップを含むことを許容する。 As used herein, the transitional phrase "comprising" synonymous with "including," "containing," or "characterized by" It is inclusive or open-ended and does not exclude additional, non-listed elements or method steps. However, in each recitation of "comprising" herein, the term also includes, as an alternative embodiment, the phrases "consisting essentially of" and "consisting of". is intended to encompass, where "consisting of" excludes any unspecified element or step, and "consisting essentially of" the essence of the composition or method under consideration. allow inclusion of additional, unlisted elements or steps that do not materially affect the general or underlying and novel features.
主題の発明を説明する目的で、特定の代表的な実施形態及び詳細を示してきたが、主題の発明の範囲から逸脱することなく様々な変更及び修正を行うことができることは当業者には明らかであろう。これに関して、本発明の範囲は、以下の特許請求の範囲によりのみ制限されるものとする。 Although specific representative embodiments and details have been presented for the purpose of describing the subject invention, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the scope of the subject invention. Will. In this regard, the scope of the invention shall be limited only by the following claims.
Claims (31)
（ａ）第１のポリエステル熱可塑性ポリウレタンを含むコアであって、前記第１のポリエステル熱可塑性ポリウレタンはＡＳＴＭ Ｄ３４１８に従って測定された少なくとも５０Ｊ／ｇの溶融エンタルピーを有する、コアと、
（ｂ）第２のポリエステル熱可塑性ポリウレタンを含むシースであって、前記第２のポリエステル熱可塑性ポリウレタンは、ＡＳＴＭ Ｄ３４１８に従って測定された５Ｊ／ｇ以下の溶融エンタルピーを有する、シースとを備える二成分繊維。 A bicomponent fiber having a core and sheath structure,
(a) a core comprising a first polyester thermoplastic polyurethane, said first polyester thermoplastic polyurethane having a melting enthalpy of at least 50 J/g measured according to ASTM D3418;
(b) a sheath comprising a second polyester thermoplastic polyurethane, said second polyester thermoplastic polyurethane having a melting enthalpy of 5 J/g or less measured according to ASTM D3418. .
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| US5162074A (en) | 1987-10-02 | 1992-11-10 | Basf Corporation | Method of making plural component fibers |
| JPH055217A (en) * | 1991-06-24 | 1993-01-14 | Kuraray Co Ltd | Polyurethane conjugate elastic fiber |
| KR0163798B1 (en) * | 1991-07-03 | 1999-01-15 | 나가따 마사오 | Thermoplastic polyarethane elastomer, method and device for manufacture thereof, and elastic fiber made therefrom |
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