JP2020528111A - 高吸水性樹脂不織布およびその製造方法 - Google Patents
高吸水性樹脂不織布およびその製造方法 Download PDFInfo
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- JP2020528111A JP2020528111A JP2020502348A JP2020502348A JP2020528111A JP 2020528111 A JP2020528111 A JP 2020528111A JP 2020502348 A JP2020502348 A JP 2020502348A JP 2020502348 A JP2020502348 A JP 2020502348A JP 2020528111 A JP2020528111 A JP 2020528111A
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- polymer
- absorbent resin
- superabsorbent polymer
- highly water
- aqueous solution
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Links
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- 229920005989 resin Polymers 0.000 title claims abstract description 96
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 239000000835 fiber Substances 0.000 claims abstract description 109
- 229920000247 superabsorbent polymer Polymers 0.000 claims abstract description 80
- 238000000034 method Methods 0.000 claims abstract description 46
- 238000010521 absorption reaction Methods 0.000 claims abstract description 32
- 229920000642 polymer Polymers 0.000 claims description 70
- 239000007864 aqueous solution Substances 0.000 claims description 47
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- 238000001035 drying Methods 0.000 claims description 24
- 239000000243 solution Substances 0.000 claims description 22
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 21
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 21
- 239000002202 Polyethylene glycol Substances 0.000 claims description 20
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- -1 2-ethylhexyl Chemical group 0.000 claims description 13
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 13
- 229940093476 ethylene glycol Drugs 0.000 claims description 13
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 12
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- 230000000379 polymerizing effect Effects 0.000 claims description 9
- 125000004432 carbon atom Chemical group C* 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 5
- NDWUBGAGUCISDV-UHFFFAOYSA-N 4-hydroxybutyl prop-2-enoate Chemical compound OCCCCOC(=O)C=C NDWUBGAGUCISDV-UHFFFAOYSA-N 0.000 claims description 4
- 125000005670 ethenylalkyl group Chemical group 0.000 claims description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
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- HFCUBKYHMMPGBY-UHFFFAOYSA-N 2-methoxyethyl prop-2-enoate Chemical compound COCCOC(=O)C=C HFCUBKYHMMPGBY-UHFFFAOYSA-N 0.000 claims description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims description 2
- 125000005250 alkyl acrylate group Chemical group 0.000 claims description 2
- 239000000539 dimer Substances 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- 125000002768 hydroxyalkyl group Chemical group 0.000 claims description 2
- 229920001451 polypropylene glycol Polymers 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
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- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 3
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- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 2
- AZCYBBHXCQYWTO-UHFFFAOYSA-N 2-[(2-chloro-6-fluorophenyl)methoxy]benzaldehyde Chemical compound FC1=CC=CC(Cl)=C1COC1=CC=CC=C1C=O AZCYBBHXCQYWTO-UHFFFAOYSA-N 0.000 description 2
- AMIJXNFLZXFHJA-UHFFFAOYSA-N 2-dimethylphosphoryl-1-(2,4,6-trimethylphenyl)ethanone Chemical compound CC1=C(C(=O)CP(C)(C)=O)C(=CC(=C1)C)C AMIJXNFLZXFHJA-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
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- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium peroxydisulfate Substances [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 description 2
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- 230000008901 benefit Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 239000005003 food packaging material Substances 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
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- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 2
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- 210000004243 sweat Anatomy 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- ZICJTCRGJXKUFL-UHFFFAOYSA-N 2-cyanopropan-2-yl 2-cyanopropan-2-yloxycarbonyloxy carbonate Chemical compound N#CC(C)(C)OC(=O)OOC(=O)OC(C)(C)C#N ZICJTCRGJXKUFL-UHFFFAOYSA-N 0.000 description 1
- CKSAKVMRQYOFBC-UHFFFAOYSA-N 2-cyanopropan-2-yliminourea Chemical compound N#CC(C)(C)N=NC(N)=O CKSAKVMRQYOFBC-UHFFFAOYSA-N 0.000 description 1
- NLGDWWCZQDIASO-UHFFFAOYSA-N 2-hydroxy-1-(7-oxabicyclo[4.1.0]hepta-1,3,5-trien-2-yl)-2-phenylethanone Chemical compound OC(C(=O)c1cccc2Oc12)c1ccccc1 NLGDWWCZQDIASO-UHFFFAOYSA-N 0.000 description 1
- XMLYCEVDHLAQEL-UHFFFAOYSA-N 2-hydroxy-2-methyl-1-phenylpropan-1-one Chemical compound CC(C)(O)C(=O)C1=CC=CC=C1 XMLYCEVDHLAQEL-UHFFFAOYSA-N 0.000 description 1
- IFXDUNDBQDXPQZ-UHFFFAOYSA-N 2-methylbutan-2-yl 2-ethylhexaneperoxoate Chemical compound CCCCC(CC)C(=O)OOC(C)(C)CC IFXDUNDBQDXPQZ-UHFFFAOYSA-N 0.000 description 1
- MNYLCGIJDZPKLE-UHFFFAOYSA-N 2-methylbutan-2-yloxy butaneperoxoate Chemical compound CCCC(=O)OOOC(C)(C)CC MNYLCGIJDZPKLE-UHFFFAOYSA-N 0.000 description 1
- NDAJNMAAXXIADY-UHFFFAOYSA-N 2-methylpropanimidamide Chemical compound CC(C)C(N)=N NDAJNMAAXXIADY-UHFFFAOYSA-N 0.000 description 1
- FRIBMENBGGCKPD-UHFFFAOYSA-N 3-(2,3-dimethoxyphenyl)prop-2-enal Chemical compound COC1=CC=CC(C=CC=O)=C1OC FRIBMENBGGCKPD-UHFFFAOYSA-N 0.000 description 1
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical compound OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 description 1
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- BMTAFVWTTFSTOG-UHFFFAOYSA-N Butylate Chemical compound CCSC(=O)N(CC(C)C)CC(C)C BMTAFVWTTFSTOG-UHFFFAOYSA-N 0.000 description 1
- CIWBSHSKHKDKBQ-DUZGATOHSA-N D-isoascorbic acid Chemical compound OC[C@@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-DUZGATOHSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
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- LXEKPEMOWBOYRF-UHFFFAOYSA-N [2-[(1-azaniumyl-1-imino-2-methylpropan-2-yl)diazenyl]-2-methylpropanimidoyl]azanium;dichloride Chemical compound Cl.Cl.NC(=N)C(C)(C)N=NC(C)(C)C(N)=N LXEKPEMOWBOYRF-UHFFFAOYSA-N 0.000 description 1
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- LBSPZZSGTIBOFG-UHFFFAOYSA-N bis[2-(4,5-dihydro-1h-imidazol-2-yl)propan-2-yl]diazene;dihydrochloride Chemical compound Cl.Cl.N=1CCNC=1C(C)(C)N=NC(C)(C)C1=NCCN1 LBSPZZSGTIBOFG-UHFFFAOYSA-N 0.000 description 1
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- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 125000004386 diacrylate group Chemical group 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- PODOEQVNFJSWIK-UHFFFAOYSA-N diphenylphosphoryl-(2,4,6-trimethoxyphenyl)methanone Chemical compound COC1=CC(OC)=CC(OC)=C1C(=O)P(=O)(C=1C=CC=CC=1)C1=CC=CC=C1 PODOEQVNFJSWIK-UHFFFAOYSA-N 0.000 description 1
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- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
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- 229940026239 isoascorbic acid Drugs 0.000 description 1
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- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- SRSFOMHQIATOFV-UHFFFAOYSA-N octanoyl octaneperoxoate Chemical compound CCCCCCCC(=O)OOC(=O)CCCCCCC SRSFOMHQIATOFV-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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- 239000002994 raw material Substances 0.000 description 1
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- 229910052708 sodium Inorganic materials 0.000 description 1
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- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
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- 239000002689 soil Substances 0.000 description 1
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- OPQYOFWUFGEMRZ-UHFFFAOYSA-N tert-butyl 2,2-dimethylpropaneperoxoate Chemical compound CC(C)(C)OOC(=O)C(C)(C)C OPQYOFWUFGEMRZ-UHFFFAOYSA-N 0.000 description 1
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 description 1
- SWAXTRYEYUTSAP-UHFFFAOYSA-N tert-butyl ethaneperoxoate Chemical compound CC(=O)OOC(C)(C)C SWAXTRYEYUTSAP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- 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
- D04H1/407—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 containing absorbing substances, e.g. activated carbon
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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
- D04H1/4282—Addition polymers
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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
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/724—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged forming webs during fibre formation, e.g. flash-spinning
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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
- D04H13/00—Other non-woven fabrics
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- 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
- D04H3/007—Addition polymers
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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
- D04H3/016—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the fineness
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- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
- D04H3/03—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2509/00—Medical; Hygiene
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Abstract
Description
本出願は、2017年10月30日付韓国特許出願第10−2017−0142612号に基づいた優先権の利益を主張し、当該韓国特許出願の文献に開示されたすべての内容は本明細書の一部として含まれている。
直径が10μm超であり、長さが0.1m以上である高吸水性樹脂繊維を含み、
限界曲率(critical curvature)が0.5mm−1以上である高吸水性樹脂不織布を提供する。
酸性基を有し、前記酸性基の少なくとも一部が中和したアクリル酸系単量体、ガラス転移温度(Tg)が常温(25℃)以下の共単量体、および重合開始剤を含む単量体水溶液を重合して含水ゲル重合体を含む第1重合体水溶液を製造する段階;
前記第1重合体水溶液にガラス転移温度(Tg)が常温(25℃)以下の架橋剤を混合して第2重合体水溶液を製造する段階;
前記第2重合体水溶液を溶液噴射(solution blown)工程によって紡糸する段階;および
前記紡糸された第2重合体水溶液を乾燥して高吸水性樹脂繊維を含む高吸水性樹脂不織布を製造する段階;
を含む高吸水性樹脂不織布の製造方法を提供する。
直径が10μm超であり、長さが0.1m以上である高吸水性樹脂繊維を含み、限界曲率(critical curvature)が0.5mm−1以上である。
酸性基を有し、前記酸性基の少なくとも一部が中和したアクリル酸系単量体、ガラス転移温度(Tg)が常温(25℃)以下の共単量体、および重合開始剤を含む単量体水溶液を重合して含水ゲル重合体を含む第1重合体水溶液を製造する段階;前記第1重合体水溶液にガラス転移温度(Tg)が常温(25℃)以下の架橋剤を混合して第2重合体水溶液を製造する段階;前記第2重合体水溶液を溶液噴射(solution blown)工程によって紡糸する段階;および前記紡糸された第2重合体水溶液を乾燥して高吸水性樹脂繊維を含む高吸水性樹脂不織布を製造する段階を含む。
[化学式1]
R1−COOM1
前記化学式1において、
R1は、不飽和結合を含む炭素数2〜5のアルキルグループであり、
M1は、水素原子、1価または2価金属、アンモニウム基または有機アミン塩である。
(実施例1)
アクリル酸(acryl acid)30重量部、ポリエチレングリコール(メチルエーテル)アクリレート(Polyethylene glycol (methyl ether)acrylate)0.9重量部、3−メルカプトプロピオン酸(3−mercaptopropionic acid)0.45重量部、水酸化ナトリウム(NaOH)10.8重量部、水57.75重量部を混合して65℃で攪拌して1時間窒素気体(N2)でパージ(purge)した後0.1重量部の過硫酸ナトリウム(SPS)を投入して10時間重合反応を行って含水ゲル状重合体が含まれた第1重合体水溶液を製造した。ここにエチレングリコール(ethylene glycol)0.5重量部を混合して第2重合体水溶液を準備した。
ポリエチレングリコール(メチルエーテル)アクリレートを0.3重量部で用い、水を58.35重量部、架橋剤としてエチレングリコールの代わりに平均分子量が200g/molであるポリエチレングリコール1.3重量部を用いたことを除いては実施例1と同様の方法により高吸水性樹脂繊維からなる不織布を製造した。
ポリエチレングリコール(メチルエーテル)アクリレートを含まず、水を58.65重量部用いたことを除いては実施例1と同様の方法により高吸水性樹脂繊維からなる不織布を製造した。
実施例1と同じ組成の第1および第2重合体水溶液を準備して遠心紡糸を用いて不織布を製造した後180℃で100分間架橋および乾燥して高吸水性樹脂繊維の集合体である不織布を収得した。
ポリエチレングリコール(メチルエーテル)アクリレートの代わりにガラス転移温度(Tg)が34℃であるビニルアセテート(vinyl acetate)を0.9重量部用いたことを除いては実施例1と同様の方法により高吸水性樹脂繊維からなる不織布を製造した。
エチレングリコール架橋剤を用いないことを除いては実施例1と同様の方法により高吸水性樹脂繊維からなる不織布を製造した。しかし、製造された不織布は架橋度が低いため水に溶けたので、遠心分離保持容量などの吸収特性を評価することができなかった。
日本登録特許第3548651号の実施例1と同様の方法により下記のように高吸水性樹脂繊維を製造した。
前記高吸水性樹脂繊維を拡大観察した結果、収得された高吸水性樹脂繊維の直径は約24〜約33μmであり、長さは約1〜約2mで測定された。また、前記高吸水性樹脂不織布の限界曲率(1/r)は、0.1mm−1であった。
(1)遠心分離保持容量(CRC,Centrifuge Retention Capacity)
実施例および比較例で製造した高吸水性樹脂繊維に対する遠心分離保持容量(CRC)は、測定サンプルとして粒子形態の高吸水性樹脂の代わりに繊維形態の高吸水性樹脂をそのまま用いたことを除いてはEDANA法WSP241.2の方法により測定した。
具体的には、高吸水性樹脂繊維W0(g、約0.2g)を不織布製の封筒に均一に入れて密封(seal)した。そして、常温で0.9重量%の生理食塩水に前記封筒を浸水させた。30分後に封筒を遠心分離機を用いて250Gで3分間脱水した後に封筒の重量W2(g)を測定した。一方、高吸水性樹脂を入れていない空の封筒を用いて同じ操作を行った後その時の重量W1(g)を測定した。
CRC(g/g)={[W2(g)−W1(g)]/W0(g)}−1
前記計算式1において、
W0(g)は、高吸水性樹脂繊維の初期重量(g)であり、
W1(g)は、高吸水性樹脂繊維を用いず、遠心分離機を用いて250Gで3分間脱水した後に測定した装置重量であり、
W2(g)は、常温で0.9重量%の生理食塩水に高吸水性樹脂繊維を30分間浸水して吸収させた後、遠心分離機を用いて250Gで3分間脱水した後に、高吸水性樹脂繊維を含んで測定した装置重量である。
実施例および比較例で製造した高吸水性樹脂繊維に対する0.9psiの加圧吸収能(AUL)は、測定サンプルとして粒子形態の高吸水性樹脂の代わりに繊維形態の高吸水性樹脂をそのまま用いたことを除いてはEDANA法WSP242.2の方法により測定された。
AUL(g/g)=[W4(g)−W3(g)]/W0(g)
前記計算式2において、
W0(g)は、高吸水性樹脂繊維の初期重量(g)であり、
W3(g)は、高吸水性樹脂繊維の重量および前記高吸水性樹脂繊維に荷重を付与できる装置重量の総和であり、
W4(g)は、荷重(0.9psi)下に1時間のあいだ前記高吸水性樹脂繊維に生理食塩水を吸収させた後に、高吸水性樹脂繊維の重量および前記高吸水性樹脂繊維に荷重を付与できる装置重量の総和である。
米国特許登録番号第5562646号のコラム54〜コラム59に開示された方法に従い測定および算出した。
実施例および比較例で製造した高吸水性樹脂繊維に対する0.3psiの加圧吸収能(AUL)は、測定サンプルとして粒子形態の高吸水性樹脂の代わりに繊維形態の高吸水性樹脂をそのまま用い、膨潤時間を1時間の代わりにそれぞれ5秒、15秒、30秒、60秒にしてEDANA法WSP242.2の方法により測定した。
AUL(g/g)=[W4(g)−W3(g)]/W0(g)
前記計算式2において、
W0(g)は、高吸水性樹脂繊維の初期重量(g)であり、
W3(g)は、高吸水性樹脂繊維の重量および前記高吸水性樹脂繊維に荷重を付与できる装置重量の総和であり、
W4(g)は、荷重(0.3psi)下に5秒間前記高吸水性樹脂繊維に生理食塩水を吸収させた後に、高吸水性樹脂繊維の重量および前記高吸水性樹脂繊維に荷重を付与できる装置重量の総和である。
実施例および比較例で製造した高吸水性樹脂不織布の柔軟性をテストする方法に対する概略的な模式図を図4に示した。
Claims (13)
- 直径が10μm超であり、長さが0.1m以上である高吸水性樹脂繊維を含み、
限界曲率(critical curvature)が0.5mm−1以上である、高吸水性樹脂不織布。 - 前記高吸水性樹脂繊維は、EDANA法WSP241.2の方法により測定した遠心分離保持容量(CRC)が5〜50g/gである、請求項1に記載の高吸水性樹脂不織布。
- 前記高吸水性樹脂繊維は、EDANA法WSP242.2の方法により測定した0.9psiの加圧吸収能(AUL)が4〜45g/gである、請求項1に記載の高吸水性樹脂不織布。
- 前記高吸水性樹脂繊維は、生理食塩水の流れ誘導性(SFC)値が5×10−7〜120×10−7cm3・sec/gである、請求項1に記載の高吸水性樹脂不織布。
- 前記高吸水性樹脂不織布100重量部に対して前記高吸水性樹脂繊維を50重量部以上含む、請求項1に記載の高吸水性樹脂不織布。
- 酸性基を有し、前記酸性基の少なくとも一部が中和したアクリル酸系単量体、ガラス転移温度(Tg)が常温(25℃)以下の共単量体、および重合開始剤を含む単量体水溶液を重合して含水ゲル重合体を含む第1重合体水溶液を製造する段階;
前記第1重合体水溶液にガラス転移温度(Tg)が常温(25℃)以下の架橋剤を混合して第2重合体水溶液を製造する段階;
前記第2重合体水溶液を溶液噴射(solution blown)工程によって紡糸する段階;および
前記紡糸された第2重合体水溶液を乾燥して高吸水性樹脂繊維を含む高吸水性樹脂不織布を製造する段階;
を含む、高吸水性樹脂不織布の製造方法。 - 前記ガラス転移温度(Tg)が常温以下の共単量体は、炭素数1〜10のビニルアルキルエーテル(vinyl alkyl ether)、炭素数1〜10のアルキルアクリレート(alkyl acrylate)、メトキシエチルアクリレート(methoxyethyl acrylate)、炭素数1〜10のヒドロキシアルキル(メタ)アクリレート(hydroxyalkyl (meth)acrylates)、エチレングリコール数1〜20のポリエチレングリコール(メチルエーテル)アクリレート(Polyethylene glycol (methyl ether)acrylate)、エチレングリコール数1〜20のポリエチレングリコール(メチルエーテル)メタクリレート(Polyethylene glycol (methyl ether)methacrylate)および2−エチルヘキシル(メタ)アクリレート(2−ethylhexyl (meth)acrylate)からなる群より選ばれる1種以上を含む、請求項6に記載の高吸水性樹脂不織布の製造方法。
- 前記ガラス転移温度(Tg)が常温以下の共単量体は、前記アクリル酸系単量体100重量部に対して0.1〜30重量部含まれる、請求項6に記載の高吸水性樹脂不織布の製造方法。
- 前記ガラス転移温度(Tg)が常温(25℃)以下の架橋剤は、エチレングリコール(ethyleneglycol)、グリセロール(glycerol)、ポリエチレングリコール(polyethyleneglycol)、ポリプロピレングリコール(polypropylene glycol)、ポリ(4−ヒドロキシブチルアクリレート)(poly(4−hydroxybutyl acrylate))、ポリ(2−ヒドロキシエチルアクリレート)(poly(2−hydroxyethyl acrylate))、およびポリ(2−ヒドロキシプロピルアクリレート)(poly(2−hydroxypropyl acrylate))からなる群より選ばれる1種以上を含む、請求項6に記載の高吸水性樹脂不織布の製造方法。
- 前記ガラス転移温度(Tg)が常温(25℃)以下の架橋剤は、前記第1重合体水溶液に含まれている含水ゲル重合体100重量部に対して0.1〜30重量部含まれる、請求項6に記載の高吸水性樹脂不織布の製造方法。
- 前記高吸水性樹脂繊維の長さは0.1m以上であり、直径は10μm超である、請求項6に記載の高吸水性樹脂不織布の製造方法。
- 前記紡糸された第2重合体水溶液を乾燥する段階において、前記含水ゲル重合体と架橋剤との架橋反応が行われる、請求項6に記載の高吸水性樹脂不織布の製造方法。
- 前記第2重合体水溶液を溶液噴射(solution blown)工程によって紡糸する段階は、前記第2重合体水溶液の周囲に気体を流しながらマイクロチャネルを介してコンベヤーベルトに連続して紡糸して行われる、請求項6に記載の高吸水性樹脂不織布の製造方法。
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- 2018-10-26 CN CN201880063066.1A patent/CN111164252B/zh active Active
- 2018-10-26 EP EP18873652.4A patent/EP3674462B1/en active Active
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EP3674462A4 (en) | 2020-08-05 |
CN111164252A (zh) | 2020-05-15 |
JP7053787B2 (ja) | 2022-04-12 |
EP3674462A1 (en) | 2020-07-01 |
CN111164252B (zh) | 2022-06-10 |
WO2019088597A1 (ko) | 2019-05-09 |
KR20190049509A (ko) | 2019-05-09 |
EP3674462B1 (en) | 2022-03-09 |
US11926939B2 (en) | 2024-03-12 |
KR102466378B1 (ko) | 2022-11-11 |
US20210079571A1 (en) | 2021-03-18 |
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