JP2020534416A - 高吸水性樹脂シートの製造方法 - Google Patents
高吸水性樹脂シートの製造方法 Download PDFInfo
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- JP2020534416A JP2020534416A JP2020516650A JP2020516650A JP2020534416A JP 2020534416 A JP2020534416 A JP 2020534416A JP 2020516650 A JP2020516650 A JP 2020516650A JP 2020516650 A JP2020516650 A JP 2020516650A JP 2020534416 A JP2020534416 A JP 2020534416A
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- JP
- Japan
- Prior art keywords
- foaming agent
- superabsorbent polymer
- producing
- weight
- polymer sheet
- 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.)
- Granted
Links
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
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- 239000000178 monomer Substances 0.000 claims description 58
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 30
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 29
- 229920000642 polymer Polymers 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 26
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 24
- 238000001035 drying Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000002202 Polyethylene glycol Substances 0.000 claims description 20
- 229920001223 polyethylene glycol Polymers 0.000 claims description 20
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 18
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- 239000003505 polymerization initiator Substances 0.000 claims description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 14
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 12
- 230000002378 acidificating effect Effects 0.000 claims description 10
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 claims description 10
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 claims description 10
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 claims description 9
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 9
- 239000002250 absorbent Substances 0.000 claims description 9
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims description 8
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 229930195733 hydrocarbon Natural products 0.000 claims description 8
- 150000002430 hydrocarbons Chemical class 0.000 claims description 8
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 claims description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 7
- GXDHCNNESPLIKD-UHFFFAOYSA-N 2-methylhexane Natural products CCCCC(C)C GXDHCNNESPLIKD-UHFFFAOYSA-N 0.000 claims description 6
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000001099 ammonium carbonate Substances 0.000 claims description 6
- 239000003431 cross linking reagent Substances 0.000 claims description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 6
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims description 6
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 6
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 6
- 229920005992 thermoplastic resin Polymers 0.000 claims description 6
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- 235000013847 iso-butane Nutrition 0.000 claims description 5
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 5
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 4
- PMPVIKIVABFJJI-UHFFFAOYSA-N Cyclobutane Chemical compound C1CCC1 PMPVIKIVABFJJI-UHFFFAOYSA-N 0.000 claims description 4
- 230000000379 polymerizing effect Effects 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 3
- NHTMVDHEPJAVLT-UHFFFAOYSA-N Isooctane Chemical compound CC(C)CC(C)(C)C NHTMVDHEPJAVLT-UHFFFAOYSA-N 0.000 claims description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 3
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims description 3
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 3
- CAMXVZOXBADHNJ-UHFFFAOYSA-N ammonium nitrite Chemical compound [NH4+].[O-]N=O CAMXVZOXBADHNJ-UHFFFAOYSA-N 0.000 claims description 3
- WJTCGQSWYFHTAC-UHFFFAOYSA-N cyclooctane Chemical compound C1CCCCCCC1 WJTCGQSWYFHTAC-UHFFFAOYSA-N 0.000 claims description 3
- 239000004914 cyclooctane Substances 0.000 claims description 3
- JVSWJIKNEAIKJW-UHFFFAOYSA-N dimethyl-hexane Natural products CCCCCC(C)C JVSWJIKNEAIKJW-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 25
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- 238000006116 polymerization reaction Methods 0.000 description 18
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- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- 238000005187 foaming Methods 0.000 description 6
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- 238000006243 chemical reaction Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000000499 gel Substances 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 238000006386 neutralization reaction Methods 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 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 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 3
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- 238000005259 measurement Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 3
- 230000003472 neutralizing effect Effects 0.000 description 3
- 230000006911 nucleation Effects 0.000 description 3
- 238000010899 nucleation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 3
- 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
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 2
- 125000004386 diacrylate group Chemical group 0.000 description 2
- 239000002612 dispersion medium Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000007561 laser diffraction method Methods 0.000 description 2
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 2
- 229920000193 polymethacrylate Polymers 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004583 superabsorbent polymers (SAPs) Substances 0.000 description 2
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 2
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 1
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 1
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- LCZVSXRMYJUNFX-UHFFFAOYSA-N 2-[2-(2-hydroxypropoxy)propoxy]propan-1-ol Chemical compound CC(O)COC(C)COC(C)CO LCZVSXRMYJUNFX-UHFFFAOYSA-N 0.000 description 1
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-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
- NDAJNMAAXXIADY-UHFFFAOYSA-N 2-methylpropanimidamide Chemical compound CC(C)C(N)=N NDAJNMAAXXIADY-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Natural products OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- 206010021639 Incontinence Diseases 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 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
- 230000009471 action Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium group Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
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- 235000010323 ascorbic acid Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 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
- 230000000903 blocking effect Effects 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- RXKUYBRRTKRGME-UHFFFAOYSA-N butanimidamide Chemical compound CCCC(N)=N RXKUYBRRTKRGME-UHFFFAOYSA-N 0.000 description 1
- 229930188620 butyrolactone Natural products 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 230000006866 deterioration Effects 0.000 description 1
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- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 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
- 239000012153 distilled water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000001704 evaporation Methods 0.000 description 1
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- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920005570 flexible polymer Polymers 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
- CATSNJVOTSVZJV-UHFFFAOYSA-N heptan-2-one Chemical compound CCCCCC(C)=O CATSNJVOTSVZJV-UHFFFAOYSA-N 0.000 description 1
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- TYQCGQRIZGCHNB-JLAZNSOCSA-N l-ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(O)=C(O)C1=O TYQCGQRIZGCHNB-JLAZNSOCSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000004745 nonwoven fabric Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
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- 229920001451 polypropylene glycol Polymers 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/127—Mixtures of organic and inorganic blowing agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/261—Synthetic macromolecular compounds obtained by reactions only involving carbon to carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract
Description
本出願は、2018年5月11日付韓国特許出願第10−2018−0054365号および2019年4月29日付韓国特許出願第10−2019−0049878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を本明細書の一部として含む。
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、ポリエチレングリコール(メチルエーテル)(メタ)アクリレート(Polyethylene glycol (methyl ether) (meth)acrylate)を含む共単量体、内部架橋剤、カプセル化した発泡剤、平均粒径1〜100nmの無機発泡剤、および重合開始剤を混合してモノマー組成物を製造する段階;
前記モノマー組成物を熱重合または光重合して含水ゲル重合体を形成する段階;および
前記含水ゲル重合体を乾燥して高吸水性樹脂シートを形成する段階;
を含む高吸水性樹脂シートの製造方法であって、
前記カプセル化した発泡剤と無機発泡剤は、3:1〜1:1の重量比で含まれる高吸水性樹脂シートの製造方法を提供する。
[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27.5g、苛性ソーダ(NaOH、30重量%溶液)35.7gおよび水5.7gを混合して前記アクリル酸の約70モル%が中和した中和液(固形分含有量:50重量%)を準備した。
前記実施例1で、アクリル酸100重量%に対して無機発泡剤を0.5%使用したことを除いては、実施例1と同様の方法で高吸水性樹脂シートを製造した。
前記実施例1で、炭酸カルシウム発泡剤を使用しなかったことを除いては実施例1と同様の方法で高吸水性樹脂シートを製造した。
前記実施例1で、カプセル化した発泡剤を使用しなかったことを除いては実施例1と同様の方法で高吸水性樹脂シートを製造した。
前記実施例1で、カプセル化した発泡剤および炭酸カルシウム発泡剤を使用しなかったことを除いては実施例1と同様の方法で高吸水性樹脂シートを製造した。
前記実施例1で、アクリル酸100重量%に対してカプセル化した発泡剤を4.5重量%、無機発泡剤を1.5重量%使用したことを除いては、実施例1と同様の方法で高吸水性樹脂シートを製造した。
前記実施例1で、アクリル酸100重量%に対してカプセル化した発泡剤を0.5重量%、無機発泡剤を1.0重量%使用したことを除いては、実施例1と同様の方法で高吸水性樹脂シートを製造した。
(高吸水性樹脂シートの特性評価)
(1)高吸水性樹脂シートの断面
本発明の実施例1による高吸水性樹脂シート単面の走査電子顕微鏡(SEM)写真を図1に示した。図1を参照すると、本発明の実施例1による高吸水性樹脂シートの表面には開気孔チャネル構造が形成されていることを確認することができる。
各実施例および比較例の高吸水性樹脂シートに対し、EDANA法WSP 241.2の方法により遠心分離保持能(CRC)を測定した。
各実施例および比較例の高吸水性樹脂シートを12cm*12cmの大きさに裁断した後にNaCl(0.9%)溶液27mlを吸収するのにかかる時間を測定した。
Claims (13)
- 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、ポリエチレングリコール(メチルエーテル)(メタ)アクリレート(Polyethylene glycol (methyl ether) (meth)acrylate)を含む共単量体、内部架橋剤、カプセル化した発泡剤、平均粒径1〜100nmの無機発泡剤、および重合開始剤を混合してモノマー組成物を製造する段階;
前記モノマー組成物を熱重合または光重合して含水ゲル重合体を形成する段階;および
前記含水ゲル重合体を乾燥して高吸水性樹脂シートを形成する段階;
を含む高吸水性樹脂シートの製造方法であって、
前記カプセル化した発泡剤と無機発泡剤は、3:1〜1:1の重量比で含まれる、高吸水性樹脂シートの製造方法。 - 前記ポリエチレングリコール(メチルエーテル)(メタ)アクリレート(Polyethylene glycol (methyl ether) (meth)acrylate)は、前記アクリル酸系単量体100重量部に対して5〜40重量部で含まれる、請求項1に記載の高吸水性樹脂シートの製造方法。
- 前記カプセル化した発泡剤は、平均粒径が2〜50μmである、請求項1に記載の高吸水性樹脂シートの製造方法。
- 前記カプセル化した発泡剤は、空気中の膨張比率が3〜15倍である、請求項1に記載の高吸水性樹脂シートの製造方法。
- 前記カプセル化した発泡剤は、炭化水素を含むコアと前記コアを囲み、熱可塑性樹脂で形成されるシェルを含む構造を有する、請求項1に記載の高吸水性樹脂シートの製造方法。
- 前記炭化水素は、n−プロパン、n−ブタン、iso−ブタン、シクロブタン、n−ペンタン、iso−ペンタン、シクロペンタン、n−ヘキサン、iso−ヘキサン、シクロヘキサン、n−ヘプタン、iso−ヘプタン、シクロヘプタン、n−オクタン、iso−オクタンおよびシクロオクタンからなる群より選ばれた1種以上である、請求項5に記載の高吸水性樹脂シートの製造方法。
- 前記熱可塑性樹脂は、(メタ)アクリレート、(メタ)アクリロニトリル、芳香族ビニル、酢酸ビニル、ハロゲン化ビニルおよびハロゲン化ビニリデンからなる群より選ばれた1種以上のモノマーから形成されるポリマーである、請求項5に記載の高吸水性樹脂シートの製造方法。
- 前記無機発泡剤は、炭酸カルシウム(CaCO3)、重炭酸ナトリウム(NaHCO3)、重炭酸アンモニウム(NH4HCO3)、炭酸アンモニウム((NH4)2CO3)、亜硝酸アンモニウム(NH4NO2)、ホウ素化水素ナトリウム(NaBH4)および炭酸ナトリウム(Na2CO3)の中から選ばれる1種以上である、請求項1に記載の高吸水性樹脂シートの製造方法。
- 前記無機発泡剤の粒径は、2〜90nmである、請求項1に記載の高吸水性樹脂シートの製造方法。
- 前記カプセル化した発泡剤と無機発泡剤は、2:1〜1:1の重量比で含まれる、請求項1に記載の高吸水性樹脂シートの製造方法。
- 前記カプセル化した発泡剤は、前記アクリル酸系単量体100重量部に対して0.1〜20重量部で含まれる、請求項1に記載の高吸水性樹脂シートの製造方法。
- 前記無機発泡剤は、前記アクリル酸系単量体100重量部に対して0.1重量部以上含まれる、請求項1に記載の高吸水性樹脂シートの製造方法。
- 前記カプセル化した発泡剤および無機発泡剤は、前記アクリル酸系単量体100重量部に対して0.4〜20重量部で含まれる、請求項1に記載の高吸水性樹脂シートの製造方法。
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US11278867B2 (en) | 2022-03-22 |
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