WO2004101628A1 - 吸水性樹脂の製造方法 - Google Patents
吸水性樹脂の製造方法 Download PDFInfo
- Publication number
- WO2004101628A1 WO2004101628A1 PCT/JP2004/006667 JP2004006667W WO2004101628A1 WO 2004101628 A1 WO2004101628 A1 WO 2004101628A1 JP 2004006667 W JP2004006667 W JP 2004006667W WO 2004101628 A1 WO2004101628 A1 WO 2004101628A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- soluble
- ethylenically unsaturated
- unsaturated monomer
- soluble ethylenically
- Prior art date
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 55
- 239000011347 resin Substances 0.000 title claims abstract description 55
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000000178 monomer Substances 0.000 claims abstract description 37
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 32
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 20
- 238000010557 suspension polymerization reaction Methods 0.000 claims abstract description 16
- 239000012986 chain transfer agent Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000002250 absorbent Substances 0.000 claims description 39
- -1 sorbitan fatty acid esters Chemical class 0.000 claims description 26
- 239000007864 aqueous solution Substances 0.000 claims description 14
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 12
- 239000000194 fatty acid Substances 0.000 claims description 12
- 229930195729 fatty acid Natural products 0.000 claims description 12
- 239000000243 solution Substances 0.000 claims description 11
- 239000007870 radical polymerization initiator Substances 0.000 claims description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 8
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical class COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 7
- 238000004132 cross linking Methods 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 7
- 239000004094 surface-active agent Substances 0.000 claims description 7
- 239000004215 Carbon black (E152) Substances 0.000 claims description 5
- 239000000084 colloidal system Substances 0.000 claims description 5
- 229930195733 hydrocarbon Natural products 0.000 claims description 5
- 150000002430 hydrocarbons Chemical class 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical group [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical class CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 4
- 229930006000 Sucrose Natural products 0.000 claims description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000005720 sucrose Substances 0.000 claims description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 3
- 150000007513 acids Chemical class 0.000 claims description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 3
- QYZFTMMPKCOTAN-UHFFFAOYSA-N n-[2-(2-hydroxyethylamino)ethyl]-2-[[1-[2-(2-hydroxyethylamino)ethylamino]-2-methyl-1-oxopropan-2-yl]diazenyl]-2-methylpropanamide Chemical compound OCCNCCNC(=O)C(C)(C)N=NC(C)(C)C(=O)NCCNCCO QYZFTMMPKCOTAN-UHFFFAOYSA-N 0.000 claims description 3
- 229940088644 n,n-dimethylacrylamide Drugs 0.000 claims description 2
- YLGYACDQVQQZSW-UHFFFAOYSA-N n,n-dimethylprop-2-enamide Chemical compound CN(C)C(=O)C=C YLGYACDQVQQZSW-UHFFFAOYSA-N 0.000 claims description 2
- 150000003333 secondary alcohols Chemical class 0.000 claims description 2
- 150000003573 thiols Chemical class 0.000 claims description 2
- 229910052751 metal Chemical class 0.000 claims 2
- 239000002184 metal Chemical class 0.000 claims 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 claims 1
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical class O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 claims 1
- 229910052938 sodium sulfate Inorganic materials 0.000 claims 1
- 235000011152 sodium sulphate Nutrition 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 41
- 238000010521 absorption reaction Methods 0.000 description 17
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 12
- 239000011521 glass Substances 0.000 description 10
- 229910052783 alkali metal Inorganic materials 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000002745 absorbent Effects 0.000 description 7
- 239000002504 physiological saline solution Substances 0.000 description 7
- 229920000742 Cotton Polymers 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 description 5
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 5
- 150000001340 alkali metals Chemical class 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910001379 sodium hypophosphite Inorganic materials 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- KOUDKOMXLMXFKX-UHFFFAOYSA-N sodium oxido(oxo)phosphanium hydrate Chemical compound O.[Na+].[O-][PH+]=O KOUDKOMXLMXFKX-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 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 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- NJRXVEJTAYWCQJ-UHFFFAOYSA-N thiomalic acid Chemical compound OC(=O)CC(S)C(O)=O NJRXVEJTAYWCQJ-UHFFFAOYSA-N 0.000 description 3
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- UWFRVQVNYNPBEF-UHFFFAOYSA-N 1-(2,4-dimethylphenyl)propan-1-one Chemical compound CCC(=O)C1=CC=C(C)C=C1C UWFRVQVNYNPBEF-UHFFFAOYSA-N 0.000 description 2
- 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
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 2
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- XUJNEKJLAYXESH-REOHCLBHSA-N L-Cysteine Chemical compound SC[C@H](N)C(O)=O XUJNEKJLAYXESH-REOHCLBHSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-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
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical class C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 229920000578 graft copolymer Polymers 0.000 description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 2
- GDOPTJXRTPNYNR-UHFFFAOYSA-N methylcyclopentane Chemical compound CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- SUVIGLJNEAMWEG-UHFFFAOYSA-N propane-1-thiol Chemical compound CCCS SUVIGLJNEAMWEG-UHFFFAOYSA-N 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000002002 slurry 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
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-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
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- QJNZULMKATYHDA-RGVONZFCSA-N (2r)-2-amino-3-[[(2r)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid;hydrate;hydrochloride Chemical compound O.Cl.OC(=O)[C@@H](N)CSSC[C@H](N)C(O)=O QJNZULMKATYHDA-RGVONZFCSA-N 0.000 description 1
- IVIDDMGBRCPGLJ-UHFFFAOYSA-N 2,3-bis(oxiran-2-ylmethoxy)propan-1-ol Chemical compound C1OC1COC(CO)COCC1CO1 IVIDDMGBRCPGLJ-UHFFFAOYSA-N 0.000 description 1
- HDPLHDGYGLENEI-UHFFFAOYSA-N 2-[1-(oxiran-2-ylmethoxy)propan-2-yloxymethyl]oxirane Chemical compound C1OC1COC(C)COCC1CO1 HDPLHDGYGLENEI-UHFFFAOYSA-N 0.000 description 1
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 1
- AUZRCMMVHXRSGT-UHFFFAOYSA-N 2-methylpropane-1-sulfonic acid;prop-2-enamide Chemical compound NC(=O)C=C.CC(C)CS(O)(=O)=O AUZRCMMVHXRSGT-UHFFFAOYSA-N 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000896 Ethulose Polymers 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- 239000001859 Ethyl hydroxyethyl cellulose Substances 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- 239000004201 L-cysteine Substances 0.000 description 1
- 235000013878 L-cysteine Nutrition 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- WXAYTPABEADAAB-UHFFFAOYSA-N Oxyphencyclimine hydrochloride Chemical compound Cl.CN1CCCN=C1COC(=O)C(O)(C=1C=CC=CC=1)C1CCCCC1 WXAYTPABEADAAB-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- VLSOAXRVHARBEQ-UHFFFAOYSA-N [4-fluoro-2-(hydroxymethyl)phenyl]methanol Chemical compound OCC1=CC=C(F)C=C1CO VLSOAXRVHARBEQ-UHFFFAOYSA-N 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000005037 alkyl phenyl group Chemical group 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000010533 azeotropic distillation Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229960002433 cysteine Drugs 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- MZGNSEAPZQGJRB-UHFFFAOYSA-N dimethyldithiocarbamic acid Chemical compound CN(C)C(S)=S MZGNSEAPZQGJRB-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- GKIPXFAANLTWBM-UHFFFAOYSA-N epibromohydrin Chemical compound BrCC1CO1 GKIPXFAANLTWBM-UHFFFAOYSA-N 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- CYKDLUMZOVATFT-UHFFFAOYSA-N ethenyl acetate;prop-2-enoic acid Chemical compound OC(=O)C=C.CC(=O)OC=C CYKDLUMZOVATFT-UHFFFAOYSA-N 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 235000019326 ethyl hydroxyethyl cellulose Nutrition 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 125000005641 methacryl group Chemical group 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- GYNNXHKOJHMOHS-UHFFFAOYSA-N methyl-cycloheptane Natural products CC1CCCCCC1 GYNNXHKOJHMOHS-UHFFFAOYSA-N 0.000 description 1
- 150000004682 monohydrates Chemical class 0.000 description 1
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 1
- AUCNMQYOQYTGPE-UHFFFAOYSA-N n-(hydroxymethyl)-n-methylprop-2-enamide Chemical compound OCN(C)C(=O)C=C AUCNMQYOQYTGPE-UHFFFAOYSA-N 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- ACVYVLVWPXVTIT-UHFFFAOYSA-M phosphinate Chemical compound [O-][PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-M 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007717 redox polymerization reaction Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- ACUGTEHQOFWBES-UHFFFAOYSA-M sodium hypophosphite monohydrate Chemical compound O.[Na+].[O-]P=O ACUGTEHQOFWBES-UHFFFAOYSA-M 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/32—Polymerisation in water-in-oil emulsions
Definitions
- the present invention relates to a method for producing a water absorbent resin. More specifically, the present invention relates to a method for producing a water-absorbent resin that can be suitably used for sanitary materials such as disposable diapers and sanitary napkins.
- water-absorbent resins have been widely used in sanitary materials such as disposable diapers and sanitary napkins, and industrial materials such as waterproofing agents for cables.
- water-absorbing resin examples include a starch-acrylonitrile graft copolymer hydrolyzate, a starch-acrylic acid graft polymer neutralized product, a vinyl acetate-acrylic acid ester copolymer gemide, and a polyacrylic acid moiety. Neutralized substances and the like are known. These water-absorbing resins generally have a large amount of water retention, but have insufficient water absorption under pressure. Therefore, when these water-absorbing resins are used for absorbent articles that are subject to a load during use, such as disposable diapers for adults, whose needs have been increasing in recent years, the water absorption under pressure is poor, and High absorptivity cannot be exhibited.
- Examples of the method for producing a water-absorbent resin having excellent water retention and water absorbency under pressure include, for example, JP-A-2-255804 and JP-A-2002-284804 As disclosed in Japanese Unexamined Patent Publication, a water-soluble ethylenically unsaturated monomer is polymerized to a water-soluble ethylenically unsaturated monomer in the presence of a specific amount of a crosslinking agent and a water-soluble chain transfer agent. A method for producing a water-absorbent resin is known.
- the water-absorbent resin obtained by such a method for producing a water-absorbent resin has relatively high water retention and water absorbency under pressure, but practically requires further improvement.
- water-absorbent resin with better water absorption A law is desired. Disclosure of the invention
- the present invention has been made in view of the prior art, and has an object to provide a method for producing a water-absorbent resin which is excellent in water retention and pressurized water absorption and can be suitably used for sanitary materials and the like.
- reverse-phase suspension polymerization is performed in two or more stages.
- a method for producing a water-absorbent resin wherein in at least one of the second and subsequent stages, 0.001 to 1 mol of the water-soluble ethylenically unsaturated monomer used in the polymerization reaction at that stage.
- the present invention relates to a method for producing a water-absorbent resin, wherein a polymerization reaction is carried out by adding 2 to 0.01 mol of a water-soluble chain transfer agent.
- FIG. 1 is a schematic explanatory view of a measuring device X used for measuring the amount of water absorption under pressure.
- an aqueous solution of a water-soluble ethylenically unsaturated monomer, a surfactant and / or a polymer protective colloid, a water-soluble radical polymerization initiator, a crosslinking agent and a hydrocarbon solvent are mixed. Then, the mixture is heated under stirring, and the first-stage reverse-phase suspension polymerization reaction is performed in a water-in-oil system.
- Examples of the water-soluble ethylenically unsaturated monomer used in the present invention include (meth) acrylic acid [“(meth) acryl” means “acryl” and “methacryl”. The same shall apply hereinafter), 2- (meth) acrylamide 2-methylpropanesulfonic acid or its alkali metal salt; (meth) acrylamide, N, N-dimethylacryl Nonionic monomers such as ruamide, 2-hydroxyethyl (meth) acrylate, and N-methylol (methyl) acrylamide; getylaminoethyl (meth) acrylate, and getylaminopropyl (meth) acrylate And the like, and amino group-containing unsaturated monomers or quaternized compounds thereof. These may be used alone or in combination of two or more.
- the alkali metal in the alkali metal salt includes lithium, sodium, potassium and the like.
- water-soluble ethylenically unsaturated monomers are acrylic acid or an alkali metal salt thereof, methacrylic acid or an alkali metal salt thereof, acrylamide, methacrylic, in view of industrial availability.
- the water-soluble ethylenically unsaturated monomer can be usually used as an aqueous solution.
- concentration of the water-soluble ethylenically unsaturated monomer in the aqueous solution of the water-soluble ethylenically unsaturated monomer is preferably from 25% by weight to a saturated concentration.
- the aqueous solution of the water-soluble ethylenically unsaturated monomer may be neutralized with an alkali metal.
- the degree of neutralization with the alkali metal is determined from the viewpoint of increasing the osmotic pressure of the resulting water-absorbent resin, increasing the water absorption rate, and preventing the presence of excess alkali metal from causing a problem in safety and the like. It is preferably from 10 to 100 mol% of the acid groups of the water-soluble ethylenically unsaturated monomer before neutralization.
- the alkali metal include lithium, sodium, and potassium. Of these, sodium and potassium are preferred.
- surfactant used in the present invention examples include nonionics such as sorbitan fatty acid ester, polyglycerin fatty acid ester, sucrose fatty acid ester, sorbitol fatty acid ester, polyoxyethylene alkyl phenyl ether, and hexaglyceryl monoveloperate.
- Surfactants fatty acid salts, alkyl benzene sulfonates, alkyl methyl taurates, polyoxyethylene alkyl phenylate
- Anionic surfactants such as tersulfate and polyoxyethylene alkyl ether sulfonate are exemplified.
- sorbitan fatty acid esters, polyglycerin fatty acid esters and sucrose fatty acid esters are preferred. These surfactants may be used alone or in combination of two or more.
- polymer protective colloid used in the present invention examples include, for example, ethyl cellulose, ethyl hydroxyethyl cellulose, polyethylene oxide, maleic anhydride polyethylene, maleic anhydride polybutadiene, maleic anhydride EPDM (ethylene propylene transe). Polymer)). These polymer protective colloids may be used alone or in combination of two or more.
- the amount of the surfactant and / or the polymer protective colloid is preferably 0.1 to 5 parts by weight, preferably 0.2 to 3 parts by weight, per 100 parts by weight of the aqueous solution of the water-soluble ethylenically unsaturated monomer. Parts by weight are more preferred.
- water-soluble radical polymerization initiator examples include: persulfates such as potassium persulfate, ammonium persulfate and sodium persulfate; peroxides such as hydrogen peroxide; 2,2′-azobis (2-aminodipropane) And azo compounds such as dihydrochloride. Further, a water-soluble radical polymerization initiator and a sulfite or the like can be used in combination to be used as a redox polymerization initiator. Among these, potassium persulfate, ammonium persulfate, sodium persulfate and 2,2′-azobis (2-aminodipropane) dihydrochloride are preferred from the viewpoint of easy availability and good storage stability.
- the water-soluble radical polymerization initiators may be used alone or as a mixture of two or more.
- the amount of the water-soluble radical polymerization initiator is usually 0.00000 with respect to 1 mol of the water-soluble ethylenically unsaturated monomer from the viewpoint of shortening the polymerization reaction time and preventing rapid polymerization reaction. ⁇ 0.1 mol is preferred.
- hydrocarbon solvent examples include n-hexane, n-heptane, and rig ports.
- Aliphatic hydrocarbons such as cyclopentane, methylcyclopentane, cyclohexane, and methylcyclohexane; and aromatic hydrocarbons such as benzene, toluene, and xylene.
- aromatic hydrocarbons such as benzene, toluene, and xylene.
- n-hexane, n-heptane, and cyclohexane are preferred because they are industrially easily available, have stable quality, and are inexpensive.
- the amount of the hydrocarbon solvent is usually 50 to 60 parts by weight based on 100 parts by weight of the water-soluble ethylenically unsaturated monomer from the viewpoint of removing the heat of polymerization and easily controlling the polymerization temperature. 0 parts by weight is preferable, and 100 to 550 parts by weight is more preferable.
- crosslinking agent used in the present invention examples include di- or tri (meth) acrylic polyols such as ethylene glycol, propylene glycol, trimethylolpropane, glycerin, polyoxyethylene daricol, polyoxypropylene glycol, and polyglycerin.
- Acid esters unsaturated polyesters obtained by reacting the above-mentioned polyols with unsaturated acids such as maleic acid and fumaric acid; bisacrylamides such as N, N'-methylenebisacrylamide; Di- or tri (meth) acrylic esters obtained by reacting polyepoxide with (meth) acrylic acid; polyisocyanates such as tolylene diisocyanate and hexamethylene diisocyanate and hydroxy (meth) acrylate Di- Metha) Acrylic acid rubamyl esters; polymerized unsaturated such as arylated starch, arylated cellulose, diaryl phthalate, N, N ', N''-triallyl isocyanate, divinylbenzene, etc.
- unsaturated polyesters obtained by reacting the above-mentioned polyols with unsaturated acids such as maleic acid and fumaric acid
- bisacrylamides such as N, N'-methylenebisacrylamide
- the amount of the cross-linking agent is 1 mol of the water-soluble ethylenically unsaturated monomer so that the obtained polymer is suppressed in water solubility by moderate cross-linking, so as to show sufficient water absorption. It is preferably 0.000 to 0.001 to 0.05 mol.
- the reaction temperature of the polymerization reaction varies depending on the radical polymerization initiator used, but the polymerization proceeds rapidly and the polymerization time is shortened, thereby improving the economical efficiency and easily removing the heat of polymerization to facilitate smoothness. From the viewpoint of carrying out the reaction at a temperature of from 20 to 110 ° C, the temperature is preferably from 40 to 90 ° C. Reaction time is usually 0.1 to 4 hours
- the first-stage reverse-phase suspension polymerization is performed.
- the obtained reaction mixture is subjected to the second-stage and subsequent reversed-phase suspension polymerization.
- the reversed-phase suspension polymerization is performed in two or more stages, and the number of stages is preferably two or three from the viewpoint of increasing productivity.
- the most important feature of the present invention resides in that the reverse suspension polymerization of at least one stage after the second stage is performed by adding a water-soluble chain transfer agent.
- a water-soluble chain transfer agent for performing such reversed-phase suspension polymerization by adding a water-soluble chain transfer agent.
- a water solution of a water-soluble ethylenically unsaturated monomer is added to the reaction solution in the first stage and mixed, and the same method as in the first stage is used. , The method of performing the second-stage and subsequent reversed-phase suspension polymerization.
- the water-soluble chain transfer agent may be added in a predetermined amount to an aqueous solution of a water-soluble ethylenically unsaturated monomer to be added to the reaction solution in the second and subsequent stages, or after the completion of the first-stage polymerization reaction. After completion, it may be added to the reaction solution cooled to a temperature of 10 to 30 ° C.
- water-soluble chain transfer agent used in the present invention examples include thiols, thiolic acids, secondary alcohols, hypophosphite and the like, and these may be used alone, respectively. Two or more kinds may be used in combination.
- Specific examples of the water-soluble chain transfer agent include ethanethiol, propanethiol, dodecanethiol, thioglycolic acid, thiomalic acid, dimethyldithiocarbamic acid or a salt thereof, getyldithiocarbamic acid or a salt thereof, and L-cysteine.
- a salt thereof, 3-potassium propoxypropanethiol, isopropanol, sodium hypophosphite, etc. can be used alone or in combination of two or more.
- water-soluble chain transfer agents sodium hypophosphite, L-cysteine hydrochloride, thiomalic acid and isopropanol are preferred from the viewpoint of high effect of adding and economical.
- the amount of the water-soluble chain transfer agent is set to 1 mol of the water-soluble ethylenically unsaturated monomer used in the polymerization reaction at the stage of performing the polymerization reaction by adding the water-soluble chain transfer agent in the second and subsequent polymerization reactions. 0.001 mol to 0.01 mol, preferably 0.001 mol to 0.005 mol, more preferably 0.000 mol to 0.000 mol. One mole. When the amount of the chain transfer agent is less than 0.001 mol, the effect of adding the water-soluble chain transfer agent cannot be sufficiently obtained. It is not preferable because the water absorption decreases.
- a post-crosslinking agent containing two or more functional groups having a reactivity with a carboxyl group it is preferable to add a post-crosslinking agent containing two or more functional groups having a reactivity with a carboxyl group to the water-absorbing resin thus obtained to perform post-crosslinking.
- Any post-crosslinking agent may be used as long as it can react with a carboxyl group in the water-absorbing resin.
- the same cross-linking agent as described above can be used.
- the amount of the post-crosslinking agent varies depending on the water absorption of the water-absorbing resin before crosslinking and the type of the crosslinking agent used, but usually, the total amount of the water-soluble ethylenically unsaturated monomers used for the polymerization is 100 parts by weight.
- the amount is preferably 0.005 to 5 parts by weight, more preferably 0.01 to 1 part by weight. If the amount of the post-crosslinking agent used is less than 0.05 part by weight, the crosslinking density of the water-absorbent resin tends to be unable to be sufficiently increased, and if it exceeds 5 parts by weight, the water-absorbing ability tends to decrease. is there.
- the post-crosslinking agent may be added at any time after the polymerization reaction of the monomer is completed, and is not particularly limited. Absent.
- the mixing of the water-absorbing resin and the post-crosslinking agent is preferably performed in the presence of water.
- the amount of water when mixing the water-absorbent resin with the post-crosslinking agent varies depending on the type of water-absorbent resin, its particle size and water content, but is usually the total amount of water-soluble ethylenically unsaturated monomers used for polymerization.
- the amount is preferably from 1 to 300 parts by weight, more preferably from 5 to 100 parts by weight, based on 100 parts by weight. If the amount of water is less than 1 part by weight, the crosslinking reaction tends to be difficult to proceed, and if it exceeds 300 parts by weight, the water absorption capacity tends to decrease.
- the amount of water in the present invention means the total amount of water remaining in the reaction system and water used as needed when adding the post-crosslinking agent.
- Example 1 the present invention will be described in more detail based on examples, but the present invention is not limited to only these examples.
- Example 1
- a 100-OmL five-necked cylindrical round bottom flask equipped with a stirrer, reflux condenser, dropping funnel, thermometer and nitrogen gas inlet tube was filled with 340 g of n-heptane and sucrose having an HLB of 3.0. 0.92 g of a fatty acid ester [manufactured by Mitsubishi Chemical Corporation, trade name: S-370] was added, and the mixture was dispersed, heated and dissolved, and then cooled to 55 ° C.
- the monomer aqueous solution for the first-stage polymerization was added and dispersed in the five-necked cylindrical round bottom flask under stirring with stirring, and the system was sufficiently purged with nitrogen gas, and then heated to a bath temperature. After the polymerization reaction was carried out for 1 hour while maintaining the temperature at 70 ° C., the polymerization slurry liquid was cooled to room temperature.
- the inside of the system was sufficiently replaced with nitrogen gas, and then the temperature was raised, and the bath temperature was maintained at 70 ° C.
- the second-stage polymerization reaction was performed for 2 hours. After the completion of the polymerization, the mixture was heated in an oil bath at 120 ° C., and only 260 g of water was distilled out of the system by azeotropic distillation. At this time, the remaining amount of water in the reaction system was 52.
- Example 1 222.5 g of a water-absorbing resin was obtained in the same manner as in Example 1, except that the amount of sodium hypophosphite monohydrate was changed to 3 Omg (0.28 mmo 1). .
- Example 3
- Example 4 217.5 g of a water-absorbent resin was obtained in the same manner as in Example 1 except that the amount of sodium hypophosphite, monohydrate was changed to 12 Omg (1.13 mmo 1). .
- Example 4
- Example 5 In the same manner as in Example 1 except that 98.3 mg (0.56 mmo 1) of L-cystine hydrochloride monohydrate was used instead of sodium hypophosphite monohydrate Thus, 216.1 g of a water absorbent resin was obtained.
- Example 5 In the same manner as in Example 1 except that 98.3 mg (0.56 mmo 1) of L-cystine hydrochloride monohydrate was used instead of sodium hypophosphite monohydrate Thus, 216.1 g of a water absorbent resin was obtained.
- Example 5 Example 5
- Example 1 a water-absorbent resin was prepared in the same manner as in Example 1 except that 26.2 mg (0.17 mmo 1) of thiomalic acid was used instead of sodium hypophosphite 'monohydrate. 9 g were obtained.
- Example 6
- a water-absorbent resin was prepared in the same manner as in Example 1 except that 0.72 mg (l.98 mmo 1) of isopropanol was used instead of sodium hypophosphite. 8. 1 g was obtained. Comparative Example 1
- Example 218.9 g of a water-absorbing resin was obtained in the same manner as in Example 1 except that sodium hypophosphite monohydrate was changed to 1.5 mg (0.014 mmo 1).
- Comparative Example 2 In Example 1, except that the amount of sodium hypophosphite monohydrate was changed to 270 Omg (25.5 mmo 1), a water-absorbing resin 2 15.9 g was used in the same manner as in Example 1. Obtained.
- the water-absorbent resins obtained in the above Examples and Comparative Examples were evaluated by the following methods. The results are shown in Table 1.
- the amount of water absorbed by the water-absorbent resin under a pressure of 2.0 kPa was measured using a measuring device X shown in FIG.
- the measuring device X shown in FIG. 1 includes a balance 1, a bottle 2 placed on the balance 1, an air suction pipe 3, a conduit 4, a glass filter 5, and a glass filter 5. And a measuring unit 6.
- the balance 1 is connected to a computer 7 so that the weight change can be recorded in seconds or minutes.
- the bottle 2 holds a physiological saline solution 8 therein.
- An air suction pipe 3 is inserted into an opening of the bottle, and a conduit 4 is attached to the body. The lower end of the air suction pipe 3 is Submerged inside.
- the diameter of the glass filter 5 is 25 mm.
- a glass filter No. 1 pore diameter: 100 to 160 jam
- Bottle 2 and glass filter 5 are connected to each other by conduit 4.
- the glass filter 5 is fixed at a position slightly higher than the lower end of the air suction pipe 3.
- the measuring section 6 has a cylinder 60, a nylon mesh 61 adhered to the bottom of the cylinder 60, and a weight 62 having a diameter of 19 mm and a weight of 59.8 g. ing.
- the inner diameter of the cylinder 60 is 20 mm.
- the nylon mesh 6 1 is formed to have a mesh of 2000 (mesh size 75 rn.)
- a predetermined amount of the water-absorbent resin 9 is evenly spread on the nylon mesh 6 1.
- the weight 62 is placed on the water-absorbent resin 9 so that a load of 2,07 kPa can be applied to the water-absorbent resin 9.
- the measuring device X having such a configuration, first, a predetermined amount of physiological saline and the air suction pipe 3 are put into the bottle 2 to prepare for measurement. Next, 0.10 g of the water-absorbent resin 9 is evenly spread on the nylon mesh 61 of the cylinder 60, and the weight 62 is placed on the water-absorbent resin 9. The measuring section 6 is placed on the glass filter 5 such that the center thereof coincides with the center of the glass filter 5.
- the computer 7 connected to the electronic balance 1 is started, and the weight of the physiological saline 8 in the bottle 2 is continuously reduced from the time when water absorption is started (the physiological saline absorbed by the water absorbent resin 9). 8) is recorded on the computer 7 in minutes, preferably seconds, based on the value obtained from the balance 1.
- the water absorption of the water-absorbent resin 9 under pressure after the elapse of 60 minutes from the start of water absorption is obtained by dividing the weight Wc (g) after the elapse of 60 minutes by the weight (0.1 Og) of the water-absorbent resin 9. It is obtained by doing. table 1
- the water-absorbing resins obtained in Examples 1 to 6 all have a large amount of physiological saline water retention and a large amount of water absorption under pressure. It turns out that it is excellent in water absorption.
- the water absorbent resin obtained by the method of the present invention can be suitably used for sanitary materials such as disposable diapers and sanitary napkins.
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- Medicinal Chemistry (AREA)
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- Polymerisation Methods In General (AREA)
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US10/555,217 US20070015887A1 (en) | 2003-05-13 | 2004-05-12 | Method for producing water-absorbing resin |
BRPI0410215-0A BRPI0410215A (pt) | 2003-05-13 | 2004-05-12 | método para produção de resina absorvedora de água |
EP04732476A EP1623998A1 (en) | 2003-05-13 | 2004-05-12 | Method for producing water-absorbing resin |
JP2005506217A JPWO2004101628A1 (ja) | 2003-05-13 | 2004-05-12 | 吸水性樹脂の製造方法 |
Applications Claiming Priority (2)
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JP2003-134391 | 2003-05-13 | ||
JP2003134391 | 2003-05-13 |
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WO2004101628A1 true WO2004101628A1 (ja) | 2004-11-25 |
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ID=33447147
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PCT/JP2004/006667 WO2004101628A1 (ja) | 2003-05-13 | 2004-05-12 | 吸水性樹脂の製造方法 |
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US (1) | US20070015887A1 (ja) |
EP (1) | EP1623998A1 (ja) |
JP (1) | JPWO2004101628A1 (ja) |
CN (1) | CN100379764C (ja) |
BR (1) | BRPI0410215A (ja) |
TW (1) | TW200508254A (ja) |
WO (1) | WO2004101628A1 (ja) |
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JP2006176570A (ja) * | 2004-12-21 | 2006-07-06 | Sumitomo Seika Chem Co Ltd | 吸水性樹脂粒子の製造方法及びそれを用いた衛生材料 |
EP1714985A1 (en) * | 2003-12-25 | 2006-10-25 | Sumitomo Seika Chemicals Co., Ltd. | Method for producing water-absorbing resin |
WO2007004529A1 (ja) * | 2005-07-04 | 2007-01-11 | Sumitomo Seika Chemicals Co., Ltd. | 吸水性樹脂の製造方法 |
CN1314719C (zh) * | 2005-10-21 | 2007-05-09 | 天津大学 | 制备单分散聚丙烯酰胺微球的方法 |
WO2009025235A1 (ja) * | 2007-08-23 | 2009-02-26 | Sumitomo Seika Chemicals Co., Ltd. | 衛生材用途に適した吸水性樹脂 |
WO2012014748A1 (ja) * | 2010-07-28 | 2012-02-02 | 住友精化株式会社 | 吸水性樹脂の製造方法 |
WO2012014749A1 (ja) * | 2010-07-28 | 2012-02-02 | 住友精化株式会社 | 吸水性樹脂の製造方法 |
US8841395B2 (en) | 2010-07-28 | 2014-09-23 | Sumitomo Seika Chemicals Co., Ltd. | Method for producing a water-absorbent resin |
US8883944B2 (en) | 2010-07-28 | 2014-11-11 | Sumitomo Seika Chemicals Co., Ltd. | Method for producing a water-absorbent resin |
US9074022B2 (en) | 2006-04-27 | 2015-07-07 | Sumitomo Seika Chemicals Co., Ltd. | Process for production of water-absorbent resin |
JPWO2020184393A1 (ja) * | 2019-03-08 | 2020-09-17 | ||
JPWO2020122219A1 (ja) * | 2018-12-12 | 2021-10-21 | 住友精化株式会社 | 吸水性樹脂粒子、吸収体、吸収性物品、及び液吸引力測定方法 |
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EP2112172B2 (en) | 2007-01-24 | 2018-10-17 | Nippon Shokubai Co., Ltd. | Particulate water-absorbent polymer and process for production thereof |
EP2177566B1 (en) * | 2007-07-25 | 2017-05-03 | Sumitomo Seika Chemicals Co., Ltd. | Method for production of water-absorbable resin, and water-absorbable resin produced by the method |
SG187061A1 (en) * | 2010-08-19 | 2013-02-28 | Sumitomo Seika Chemicals | Water-absorbing resin |
TW201247249A (en) * | 2011-04-21 | 2012-12-01 | Sumitomo Seika Chemicals | Water-absorbent resin, absorbent material, and absorbent article |
TWI513713B (zh) * | 2011-04-21 | 2015-12-21 | Sumitomo Seika Chemicals | 吸水性樹脂之製造方法 |
CN104918964B (zh) * | 2014-07-11 | 2017-07-18 | 住友精化株式会社 | 吸水性树脂的制造方法 |
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JP2006176570A (ja) * | 2004-12-21 | 2006-07-06 | Sumitomo Seika Chem Co Ltd | 吸水性樹脂粒子の製造方法及びそれを用いた衛生材料 |
JP5099899B2 (ja) * | 2005-07-04 | 2012-12-19 | 住友精化株式会社 | 吸水性樹脂の製造方法 |
US8084544B2 (en) | 2005-07-04 | 2011-12-27 | Sumitomo Seika Chemicals Co., Ltd. | Process for production of water-absorbing resin |
WO2007004529A1 (ja) * | 2005-07-04 | 2007-01-11 | Sumitomo Seika Chemicals Co., Ltd. | 吸水性樹脂の製造方法 |
CN1314719C (zh) * | 2005-10-21 | 2007-05-09 | 天津大学 | 制备单分散聚丙烯酰胺微球的方法 |
US9074022B2 (en) | 2006-04-27 | 2015-07-07 | Sumitomo Seika Chemicals Co., Ltd. | Process for production of water-absorbent resin |
WO2009025235A1 (ja) * | 2007-08-23 | 2009-02-26 | Sumitomo Seika Chemicals Co., Ltd. | 衛生材用途に適した吸水性樹脂 |
JPWO2009025235A1 (ja) * | 2007-08-23 | 2010-11-25 | 住友精化株式会社 | 衛生材用途に適した吸水性樹脂 |
JP5439179B2 (ja) * | 2007-08-23 | 2014-03-12 | 住友精化株式会社 | 衛生材用途に適した吸水性樹脂 |
JPWO2012014748A1 (ja) * | 2010-07-28 | 2013-09-12 | 住友精化株式会社 | 吸水性樹脂の製造方法 |
JPWO2012014749A1 (ja) * | 2010-07-28 | 2013-09-12 | 住友精化株式会社 | 吸水性樹脂の製造方法 |
WO2012014749A1 (ja) * | 2010-07-28 | 2012-02-02 | 住友精化株式会社 | 吸水性樹脂の製造方法 |
US8841395B2 (en) | 2010-07-28 | 2014-09-23 | Sumitomo Seika Chemicals Co., Ltd. | Method for producing a water-absorbent resin |
US8859700B2 (en) | 2010-07-28 | 2014-10-14 | Sumitomo Seika Chemicals Co., Ltd. | Method for producing a water-absorbent resin |
US8883944B2 (en) | 2010-07-28 | 2014-11-11 | Sumitomo Seika Chemicals Co., Ltd. | Method for producing a water-absorbent resin |
WO2012014748A1 (ja) * | 2010-07-28 | 2012-02-02 | 住友精化株式会社 | 吸水性樹脂の製造方法 |
US9132413B2 (en) | 2010-07-28 | 2015-09-15 | Sumitomo Seika Chemicals Co., Ltd. | Method for producing a water-absorbent resin |
JPWO2020122219A1 (ja) * | 2018-12-12 | 2021-10-21 | 住友精化株式会社 | 吸水性樹脂粒子、吸収体、吸収性物品、及び液吸引力測定方法 |
JP7129490B2 (ja) | 2018-12-12 | 2022-09-01 | 住友精化株式会社 | 吸水性樹脂粒子、吸収体、吸収性物品、及び液吸引力測定方法 |
JPWO2020184393A1 (ja) * | 2019-03-08 | 2020-09-17 |
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JPWO2004101628A1 (ja) | 2006-07-13 |
BRPI0410215A (pt) | 2006-05-09 |
TW200508254A (en) | 2005-03-01 |
US20070015887A1 (en) | 2007-01-18 |
EP1623998A1 (en) | 2006-02-08 |
CN100379764C (zh) | 2008-04-09 |
CN1788022A (zh) | 2006-06-14 |
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