WO2022114610A1 - 고흡수성 수지 및 이의 제조 방법 - Google Patents
고흡수성 수지 및 이의 제조 방법 Download PDFInfo
- Publication number
- WO2022114610A1 WO2022114610A1 PCT/KR2021/016321 KR2021016321W WO2022114610A1 WO 2022114610 A1 WO2022114610 A1 WO 2022114610A1 KR 2021016321 W KR2021016321 W KR 2021016321W WO 2022114610 A1 WO2022114610 A1 WO 2022114610A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polymer
- super absorbent
- carboxylic acid
- superabsorbent polymer
- water
- Prior art date
Links
- 229920000247 superabsorbent polymer Polymers 0.000 title claims abstract description 188
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 239000000654 additive Substances 0.000 claims abstract description 89
- 230000000996 additive effect Effects 0.000 claims abstract description 82
- 239000004088 foaming agent Substances 0.000 claims abstract description 78
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims abstract description 73
- 229920000642 polymer Polymers 0.000 claims description 114
- 239000000017 hydrogel Substances 0.000 claims description 79
- 239000002245 particle Substances 0.000 claims description 74
- 239000000178 monomer Substances 0.000 claims description 70
- 239000003431 cross linking reagent Substances 0.000 claims description 65
- 238000000034 method Methods 0.000 claims description 59
- -1 alkali metal salt Chemical class 0.000 claims description 50
- 150000001875 compounds Chemical class 0.000 claims description 50
- 238000004132 cross linking Methods 0.000 claims description 34
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 29
- 238000001035 drying Methods 0.000 claims description 29
- 230000002378 acidificating effect Effects 0.000 claims description 25
- 229920006037 cross link polymer Polymers 0.000 claims description 22
- 238000004519 manufacturing process Methods 0.000 claims description 21
- 238000010298 pulverizing process Methods 0.000 claims description 21
- 239000003505 polymerization initiator Substances 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 18
- 239000011347 resin Substances 0.000 claims description 18
- 125000000217 alkyl group Chemical group 0.000 claims description 15
- 125000004432 carbon atom Chemical group C* 0.000 claims description 15
- 150000003839 salts Chemical class 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 10
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 claims description 10
- 239000002250 absorbent Substances 0.000 claims description 9
- 229910052783 alkali metal Inorganic materials 0.000 claims description 9
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 9
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 9
- 229930195733 hydrocarbon Natural products 0.000 claims description 9
- 150000002430 hydrocarbons Chemical class 0.000 claims description 9
- 239000004215 Carbon black (E152) Substances 0.000 claims description 8
- 230000002745 absorbent Effects 0.000 claims description 8
- 229920005601 base polymer Polymers 0.000 claims description 7
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 claims description 7
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 claims description 7
- 230000000379 polymerizing effect Effects 0.000 claims description 7
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims description 6
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 claims description 6
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 6
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 6
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 claims description 6
- 239000001282 iso-butane Substances 0.000 claims description 5
- 235000013847 iso-butane Nutrition 0.000 claims description 5
- 230000008961 swelling Effects 0.000 claims description 5
- 229920005992 thermoplastic resin Polymers 0.000 claims description 5
- GXDHCNNESPLIKD-UHFFFAOYSA-N 2-methylhexane Natural products CCCCC(C)C GXDHCNNESPLIKD-UHFFFAOYSA-N 0.000 claims description 4
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 4
- 125000004429 atom Chemical group 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 4
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims description 4
- IQVNEKKDSLOHHK-FNCQTZNRSA-N (E,E)-hydramethylnon Chemical compound N1CC(C)(C)CNC1=NN=C(/C=C/C=1C=CC(=CC=1)C(F)(F)F)\C=C\C1=CC=C(C(F)(F)F)C=C1 IQVNEKKDSLOHHK-FNCQTZNRSA-N 0.000 claims description 3
- PMPVIKIVABFJJI-UHFFFAOYSA-N Cyclobutane Chemical compound C1CCC1 PMPVIKIVABFJJI-UHFFFAOYSA-N 0.000 claims description 3
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 3
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 2
- NHTMVDHEPJAVLT-UHFFFAOYSA-N Isooctane Chemical compound CC(C)CC(C)(C)C NHTMVDHEPJAVLT-UHFFFAOYSA-N 0.000 claims description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 2
- WJTCGQSWYFHTAC-UHFFFAOYSA-N cyclooctane Chemical compound C1CCCCCCC1 WJTCGQSWYFHTAC-UHFFFAOYSA-N 0.000 claims description 2
- 239000004914 cyclooctane Substances 0.000 claims description 2
- JVSWJIKNEAIKJW-UHFFFAOYSA-N dimethyl-hexane Natural products CCCCCC(C)C JVSWJIKNEAIKJW-UHFFFAOYSA-N 0.000 claims description 2
- 229920002554 vinyl polymer Polymers 0.000 claims description 2
- 150000001735 carboxylic acids Chemical class 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 27
- 238000010521 absorption reaction Methods 0.000 abstract description 18
- 230000006866 deterioration Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 32
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 21
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 14
- 238000012719 thermal polymerization Methods 0.000 description 13
- 230000000704 physical effect Effects 0.000 description 12
- 239000011148 porous material Substances 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 11
- 239000000843 powder Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 229920001223 polyethylene glycol Polymers 0.000 description 10
- 239000004583 superabsorbent polymers (SAPs) Substances 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 239000002202 Polyethylene glycol Substances 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 230000002776 aggregation Effects 0.000 description 9
- 238000005187 foaming Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 9
- 239000003999 initiator Substances 0.000 description 9
- 238000002156 mixing Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- ODFAPIRLUPAQCQ-UHFFFAOYSA-M sodium stearoyl lactylate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC(=O)OC(C)C(=O)OC(C)C([O-])=O ODFAPIRLUPAQCQ-UHFFFAOYSA-M 0.000 description 9
- 239000003724 sodium stearoyl-2-lactylate Substances 0.000 description 9
- 235000010956 sodium stearoyl-2-lactylate Nutrition 0.000 description 9
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 8
- 125000000524 functional group Chemical group 0.000 description 8
- 239000004593 Epoxy Substances 0.000 description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000004220 aggregation Methods 0.000 description 6
- 239000002585 base Substances 0.000 description 6
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- 230000002209 hydrophobic effect Effects 0.000 description 6
- 229910010272 inorganic material Inorganic materials 0.000 description 6
- 239000011147 inorganic material Substances 0.000 description 6
- 230000003472 neutralizing effect Effects 0.000 description 6
- 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 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 5
- 235000013372 meat Nutrition 0.000 description 5
- 238000006386 neutralization reaction Methods 0.000 description 5
- 239000003381 stabilizer Substances 0.000 description 5
- TXHFHCPKVSDSIL-UHFFFAOYSA-N 1,3-dioxolan-2-one;4-methyl-1,3-dioxolan-2-one Chemical compound O=C1OCCO1.CC1COC(=O)O1 TXHFHCPKVSDSIL-UHFFFAOYSA-N 0.000 description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 4
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 description 4
- 125000003504 2-oxazolinyl group Chemical class O1C(=NCC1)* 0.000 description 4
- JFMGYULNQJPJCY-UHFFFAOYSA-N 4-(hydroxymethyl)-1,3-dioxolan-2-one Chemical compound OCC1COC(=O)O1 JFMGYULNQJPJCY-UHFFFAOYSA-N 0.000 description 4
- 239000004604 Blowing Agent Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 238000005054 agglomeration Methods 0.000 description 4
- 150000001340 alkali metals Chemical class 0.000 description 4
- 150000001342 alkaline earth metals Chemical class 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 4
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 229920001451 polypropylene glycol Polymers 0.000 description 4
- 239000011342 resin composition Substances 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 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 3
- AOBIOSPNXBMOAT-UHFFFAOYSA-N 2-[2-(oxiran-2-ylmethoxy)ethoxymethyl]oxirane Chemical compound C1OC1COCCOCC1CO1 AOBIOSPNXBMOAT-UHFFFAOYSA-N 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-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
- 229920003171 Poly (ethylene oxide) Polymers 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
- 229910052799 carbon Inorganic materials 0.000 description 3
- 150000007942 carboxylates Chemical group 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000499 gel Substances 0.000 description 3
- 235000011187 glycerol Nutrition 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 239000002952 polymeric resin Substances 0.000 description 3
- 229920000259 polyoxyethylene lauryl ether Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000004445 quantitative analysis Methods 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 3
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 description 2
- IIPCXIGUIPAGQB-OUKQBFOZSA-N (e)-4-dodecoxy-4-oxobut-2-enoic acid Chemical compound CCCCCCCCCCCCOC(=O)\C=C\C(O)=O IIPCXIGUIPAGQB-OUKQBFOZSA-N 0.000 description 2
- 229940015975 1,2-hexanediol Drugs 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-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
- IZXIZTKNFFYFOF-UHFFFAOYSA-N 2-Oxazolidone Chemical compound O=C1NCCO1 IZXIZTKNFFYFOF-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
- XLLIQLLCWZCATF-UHFFFAOYSA-N 2-methoxyethyl acetate Chemical compound COCCOC(C)=O XLLIQLLCWZCATF-UHFFFAOYSA-N 0.000 description 2
- SPXWGAHNKXLXAP-UHFFFAOYSA-N 2-methylpentane-1,3-diol Chemical compound CCC(O)C(C)CO SPXWGAHNKXLXAP-UHFFFAOYSA-N 0.000 description 2
- NDAJNMAAXXIADY-UHFFFAOYSA-N 2-methylpropanimidamide Chemical compound CC(C)C(N)=N NDAJNMAAXXIADY-UHFFFAOYSA-N 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- LWYAUHJRUCQFCX-UHFFFAOYSA-N 4-dodecoxy-4-oxobutanoic acid Chemical compound CCCCCCCCCCCCOC(=O)CCC(O)=O LWYAUHJRUCQFCX-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
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-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
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- 229920000168 Microcrystalline cellulose Polymers 0.000 description 2
- MHQJUHSHQGQVTM-HNENSFHCSA-N Octadecyl fumarate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)\C=C/C(O)=O MHQJUHSHQGQVTM-HNENSFHCSA-N 0.000 description 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Natural products P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 239000002253 acid Substances 0.000 description 2
- 150000005215 alkyl ethers Chemical class 0.000 description 2
- 150000008051 alkyl sulfates Chemical class 0.000 description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 235000006708 antioxidants Nutrition 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 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 2
- 239000002775 capsule Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000011258 core-shell material Substances 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
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- VFHVQBAGLAREND-UHFFFAOYSA-N diphenylphosphoryl-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C1=CC=CC=C1 VFHVQBAGLAREND-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- HNRMPXKDFBEGFZ-UHFFFAOYSA-N ethyl trimethyl methane Natural products CCC(C)(C)C HNRMPXKDFBEGFZ-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- FHKSXSQHXQEMOK-UHFFFAOYSA-N hexane-1,2-diol Chemical compound CCCCC(O)CO FHKSXSQHXQEMOK-UHFFFAOYSA-N 0.000 description 2
- AVIYEYCFMVPYST-UHFFFAOYSA-N hexane-1,3-diol Chemical compound CCCC(O)CCO AVIYEYCFMVPYST-UHFFFAOYSA-N 0.000 description 2
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 2
- OHMBHFSEKCCCBW-UHFFFAOYSA-N hexane-2,5-diol Chemical compound CC(O)CCC(C)O OHMBHFSEKCCCBW-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 235000019813 microcrystalline cellulose Nutrition 0.000 description 2
- 239000008108 microcrystalline cellulose Substances 0.000 description 2
- 229940016286 microcrystalline cellulose Drugs 0.000 description 2
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 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
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 2
- 239000002504 physiological saline solution Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 229920000166 polytrimethylene carbonate Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 2
- 239000011802 pulverized particle Substances 0.000 description 2
- 238000004451 qualitative analysis Methods 0.000 description 2
- 239000000377 silicon dioxide 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
- 238000003860 storage Methods 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 2
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-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
- PUGOMSLRUSTQGV-UHFFFAOYSA-N 2,3-di(prop-2-enoyloxy)propyl prop-2-enoate Chemical compound C=CC(=O)OCC(OC(=O)C=C)COC(=O)C=C PUGOMSLRUSTQGV-UHFFFAOYSA-N 0.000 description 1
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 1
- KHICUSAUSRBPJT-UHFFFAOYSA-N 2-(2-octadecanoyloxypropanoyloxy)propanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC(C)C(=O)OC(C)C(O)=O KHICUSAUSRBPJT-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- SYEWHONLFGZGLK-UHFFFAOYSA-N 2-[1,3-bis(oxiran-2-ylmethoxy)propan-2-yloxymethyl]oxirane Chemical compound C1OC1COCC(OCC1OC1)COCC1CO1 SYEWHONLFGZGLK-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
- FVCHRIQAIOHAIC-UHFFFAOYSA-N 2-[1-[1-[1-(oxiran-2-ylmethoxy)propan-2-yloxy]propan-2-yloxy]propan-2-yloxymethyl]oxirane Chemical compound C1OC1COC(C)COC(C)COC(C)COCC1CO1 FVCHRIQAIOHAIC-UHFFFAOYSA-N 0.000 description 1
- SEFYJVFBMNOLBK-UHFFFAOYSA-N 2-[2-[2-(oxiran-2-ylmethoxy)ethoxy]ethoxymethyl]oxirane Chemical compound C1OC1COCCOCCOCC1CO1 SEFYJVFBMNOLBK-UHFFFAOYSA-N 0.000 description 1
- WTYYGFLRBWMFRY-UHFFFAOYSA-N 2-[6-(oxiran-2-ylmethoxy)hexoxymethyl]oxirane Chemical compound C1OC1COCCCCCCOCC1CO1 WTYYGFLRBWMFRY-UHFFFAOYSA-N 0.000 description 1
- KUAUJXBLDYVELT-UHFFFAOYSA-N 2-[[2,2-dimethyl-3-(oxiran-2-ylmethoxy)propoxy]methyl]oxirane Chemical compound C1OC1COCC(C)(C)COCC1CO1 KUAUJXBLDYVELT-UHFFFAOYSA-N 0.000 description 1
- FDSUVTROAWLVJA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.OCC(CO)(CO)COCC(CO)(CO)CO FDSUVTROAWLVJA-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-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
- 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
- MJIFFWRTVONWNO-UHFFFAOYSA-N 3-oxopent-4-ene-1-sulfonic acid Chemical compound OS(=O)(=O)CCC(=O)C=C MJIFFWRTVONWNO-UHFFFAOYSA-N 0.000 description 1
- SVYPQURSUBDSIQ-UHFFFAOYSA-N 4-methyl-3-oxopent-4-ene-1-sulfonic acid Chemical compound CC(=C)C(=O)CCS(O)(=O)=O SVYPQURSUBDSIQ-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZMDDERVSCYEKPQ-UHFFFAOYSA-N Ethyl (mesitylcarbonyl)phenylphosphinate Chemical compound C=1C=CC=CC=1P(=O)(OCC)C(=O)C1=C(C)C=C(C)C=C1C ZMDDERVSCYEKPQ-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-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
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- GUCYFKSBFREPBC-UHFFFAOYSA-N [phenyl-(2,4,6-trimethylbenzoyl)phosphoryl]-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C(=O)C1=C(C)C=C(C)C=C1C GUCYFKSBFREPBC-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 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
- BTBJBAZGXNKLQC-UHFFFAOYSA-N ammonium lauryl sulfate Chemical compound [NH4+].CCCCCCCCCCCCOS([O-])(=O)=O BTBJBAZGXNKLQC-UHFFFAOYSA-N 0.000 description 1
- 229940063953 ammonium lauryl sulfate Drugs 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- 235000010323 ascorbic acid Nutrition 0.000 description 1
- 229960005070 ascorbic acid Drugs 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229930188620 butyrolactone Natural products 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 1
- 125000004386 diacrylate group Chemical group 0.000 description 1
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 1
- GPLRAVKSCUXZTP-UHFFFAOYSA-N diglycerol Chemical compound OCC(O)COCC(O)CO GPLRAVKSCUXZTP-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- SMVRDGHCVNAOIN-UHFFFAOYSA-L disodium;1-dodecoxydodecane;sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O.CCCCCCCCCCCCOCCCCCCCCCCCC SMVRDGHCVNAOIN-UHFFFAOYSA-L 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- MOTZDAYCYVMXPC-UHFFFAOYSA-N dodecyl hydrogen sulfate Chemical compound CCCCCCCCCCCCOS(O)(=O)=O MOTZDAYCYVMXPC-UHFFFAOYSA-N 0.000 description 1
- 229940043264 dodecyl sulfate Drugs 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 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
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 238000003898 horticulture Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910001867 inorganic solvent Inorganic materials 0.000 description 1
- 239000003049 inorganic solvent Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 1
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- FAQJJMHZNSSFSM-UHFFFAOYSA-N phenylglyoxylic acid Chemical compound OC(=O)C(=O)C1=CC=CC=C1 FAQJJMHZNSSFSM-UHFFFAOYSA-N 0.000 description 1
- 229920000223 polyglycerol Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 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
- 238000001556 precipitation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- MDSQKJDNWUMBQQ-UHFFFAOYSA-M sodium myreth sulfate Chemical compound [Na+].CCCCCCCCCCCCCCOCCOCCOCCOS([O-])(=O)=O MDSQKJDNWUMBQQ-UHFFFAOYSA-M 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- RINCXYDBBGOEEQ-UHFFFAOYSA-N succinic anhydride Chemical compound O=C1CCC(=O)O1 RINCXYDBBGOEEQ-UHFFFAOYSA-N 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- UWHCKJMYHZGTIT-UHFFFAOYSA-N tetraethylene glycol Chemical compound OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- 125000005259 triarylamine group Chemical group 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
-
- 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
- C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
- C08F20/04—Acids, Metal salts or ammonium salts thereof
- C08F20/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- 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
- B01J20/265—Synthetic macromolecular compounds modified or post-treated polymers
- B01J20/267—Cross-linked polymers
-
- 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/305—Addition of material, later completely removed, e.g. as result of heat treatment, leaching or washing, e.g. for forming pores
- B01J20/3064—Addition of pore forming agents, e.g. pore inducing or porogenic 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3268—Macromolecular compounds
- B01J20/328—Polymers on the carrier being further modified
- B01J20/3282—Crosslinked polymers
-
- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- 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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
-
- 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
- C08J9/32—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof from compositions containing microballoons, e.g. syntactic foams
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
-
- 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
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/50—Aspects relating to the use of sorbent or filter aid materials
- B01J2220/68—Superabsorbents
-
- 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
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/02—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
- C08J2201/026—Crosslinking before of after foaming
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/22—Expandable microspheres, e.g. Expancel®
-
- 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
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
Definitions
- the present invention relates to a super absorbent polymer and a method for preparing the same. More specifically, the present invention relates to a superabsorbent polymer having a reduced content of water-soluble components without deterioration in absorption performance, and to a method of manufacturing the superabsorbent polymer capable of producing the superabsorbent polymer.
- Super Absorbent Polymer is a synthetic polymer material that can absorb water 500 to 1,000 times its own weight. Material), etc., are named differently.
- the superabsorbent polymer as described above started to be put to practical use as a sanitary tool, and is now widely used as a soil repair agent for horticulture, water-retaining material for civil engineering and construction, a sheet for seedlings, a freshness maintenance agent in the food distribution field, and a material for poultice. .
- Such superabsorbent polymers are mainly used in the field of sanitary materials such as diapers and sanitary napkins.
- the superabsorbent polymer is generally included in a state spread in the pulp.
- efforts have been made to provide sanitary materials such as diapers having a thinner thickness, and as a part of that, the content of pulp is reduced or, further, so-called pulpless diapers such as diapers in which no pulp is used are used. Development is actively underway.
- the superabsorbent polymer is included in a relatively high ratio, so that the superabsorbent polymer particles are inevitably included in multiple layers in the sanitary material.
- the entire superabsorbent polymer particles included in this multi-layered structure it is necessary not only to exhibit a high absorption capacity for liquid and a fast absorption rate, but also to ensure that the absorbed liquid is absorbed even under external pressure. It should not come out, and in addition, permeability is required to absorb liquid and maintain its original shape well even in a swollen state.
- this superabsorbent polymer contains a number of hydrophilic parts on its surface to exhibit high absorption properties for liquids, specifically water, when exposed to air, it absorbs moisture contained in the air, thereby absorbing the superabsorbent polymer particles. Aggregation and caking between them have occurred.
- the absorption rate is reduced while preventing caking between the superabsorbent polymer particles of the superabsorbent polymer.
- CRC water holding capacity
- AUP absorbency under pressure
- the present invention is to prepare a superabsorbent polymer with improved liquid permeability and caking prevention efficiency while having a fast absorption rate by polymerizing a monomer in the presence of an encapsulated foaming agent, adding an additive of a specific structure to the hydrogel polymer, and coarsely pulverizing it. It relates to a method for producing a super absorbent polymer that can be
- superabsorbent polymer particles comprising a water-soluble ethylenically unsaturated monomer having at least a partially neutralized acidic group and a crosslinked polymer of an internal crosslinking agent;
- a superabsorbent polymer containing a carboxylic acid-based additive A superabsorbent polymer containing a carboxylic acid-based additive
- the carboxylic acid-based additive is at least one selected from the group consisting of a carboxylic acid represented by the following formula (1) and a salt thereof,
- the superabsorbent polymer is a mixture of the superabsorbent polymer.
- the water-soluble component measured after swelling the superabsorbent polymer for 1 hour according to the EDANA method WSP 270.2 method is 4 wt% or less based on the total weight of the superabsorbent polymer
- a superabsorbent polymer is provided:
- A is alkyl having 5 to 21 carbon atoms
- B 1 is -OCO-, -COO-, or -COOCH(R 1 )COO-,
- R 1 and R 2 are each independently an alkyl having 1 to 4 carbon atoms
- n is an integer from 1 to 3
- C is a carboxyl group
- CRC means the centrifugal retention capacity measured according to the method of EDANA method WSP 241.3
- content of the water-soluble component means the natural logarithm of the content of the water-soluble component.
- step 1 forming a hydrogel polymer by crosslinking and polymerizing a water-soluble ethylenically unsaturated monomer having an acidic group at least partially neutralized in the presence of an internal crosslinking agent, an encapsulated foaming agent, a carboxylic acid-based additive and a polymerization initiator (step 1); and
- the carboxylic acid-based additive is at least one selected from the group consisting of a carboxylic acid represented by Formula 1 and a salt thereof,
- a method for preparing a super absorbent polymer is provided.
- the content of the water-soluble component can be reduced without deteriorating the absorption performance of the superabsorbent polymer by including the carboxylic acid-based additive having a specific structure.
- these carboxylic acid-based additives can be added together with a foaming agent in the polymerization step to significantly reduce the surface tackiness of the hydrogel polymer, thereby preventing tearing of the polymer in the mincing step of the hydrogel polymer, thereby preventing the final prepared high Not only the water-soluble component of the water-absorbent resin is reduced, but the absorption performance may not be deteriorated.
- polymer refers to a polymerized state of a water-soluble ethylenically unsaturated monomer, and may cover all water content ranges or particle diameter ranges.
- a polymer having a moisture content (moisture content) of about 30% by weight or more in a state before drying after polymerization may be referred to as a hydrogel polymer, and particles obtained by pulverizing and drying the hydrogel polymer may be referred to as a crosslinked polymer. have.
- super absorbent polymer particle refers to a particulate material comprising an acidic group and a crosslinked polymer in which a water-soluble ethylenically unsaturated monomer in which at least a portion of the acidic group is neutralized is polymerized and crosslinked by an internal crosslinking agent.
- the term “super absorbent polymer” refers to a cross-linked polymer obtained by polymerizing a water-soluble ethylenically unsaturated monomer containing an acidic group and neutralizing at least a portion of the acidic group, or powder composed of particles of a superabsorbent polymer obtained by pulverizing the cross-linked polymer, depending on the context. It refers to a base resin in the form of (powder), or to the crosslinked polymer or the base resin through additional processes, such as drying, pulverization, classification, surface crosslinking, etc. used Accordingly, the term “super absorbent polymer” may be interpreted as including a composition including the super absorbent polymer, that is, a plurality of super absorbent polymer particles.
- normal particles of superabsorbent polymer refers to particles having a particle diameter of 150 ⁇ m to 850 ⁇ m among superabsorbent polymer particles.
- fine powder refers to particles having a particle diameter of less than 150 ⁇ m among the superabsorbent polymer particles.
- chopping refers to shredding the hydrogel polymer into small pieces to increase drying efficiency, and is used separately from pulverizing to a normal particle level.
- Conventional superabsorbent polymers are prepared by drying the hydrogel polymer prepared by polymerizing monomers and then pulverizing the hydrogel polymer to a desired particle size. A process of chopping or mincing the gel polymer proceeds.
- the surface of the generally prepared hydrogel polymer is sticky, it is difficult to chop it to a uniform size, so that the efficiency of chopping is reduced, and there has been a problem that the tearing of the polymer occurs in the chopping step.
- a foaming agent is used together during polymerization to increase the specific surface area of the superabsorbent polymer to improve the absorption rate. As a result, the stickiness of the hydrogel polymer increased, which was a further problem.
- the polymer is deposited on a part of the polymerizer belt, and accordingly, polymerization occurs unevenly due to the residue remaining on a part of the polymerizer belt, and the maintenance period for the polymerizer is shortened. There was also the problem of increasing.
- the present inventors have completed the present invention by confirming that, when a carboxylic acid-based additive having a specific structure is included, the content of the water-soluble component can be reduced without deteriorating the absorption performance of the superabsorbent polymer.
- the carboxylic acid-based additive when the carboxylic acid-based additive is added together with a foaming agent in the polymerization step, the carboxylic acid-based additive is adsorbed to the inside and/or surface of the polymerized hydrogel polymer without participating in the polymerization reaction, and among these, the surface The carboxylic acid-based additive adsorbed to the hydrogel may impart hydrophobicity to the surface of the hydrogel polymer.
- the surface tackiness of the hydrogel polymer can be significantly reduced, and tearing of the polymer is prevented during the chopping step, so that the water-soluble component of the final prepared superabsorbent polymer is reduced, but the absorption performance is not reduced.
- the carboxylic acid-based additive added to the hydrogel polymer is at least one compound selected from the group consisting of the carboxylic acid represented by Formula 1 and salts thereof, and a hydrophobic functional group and It has a hydrophilic functional group at the same time.
- the water-soluble ethylenically unsaturated monomer contains an acidic group (-COOH) and/or a neutralized acidic group (-COO- )
- an acidic group remaining without participating in polymerization A large amount of hydrophilic moieties due to (-COOH) and/or neutralized acidic groups (-COO- ) are present.
- the hydrophilic functional group of the additive is adsorbed to at least a portion of the hydrophilic portion present on the surface of the hydrogel polymer, and the surface of the polymer to which the additive is adsorbed is hydrophobic by the hydrophobic functional group located at the other end of the additive.
- the surface of the hydrogel polymer may exhibit hydrophobicity, thereby reducing the stickiness of the surface.
- the hydrophobic functional group is an alkyl group having 5 to 21 carbon atoms (part A), the hydrophilic functional group is a C part, a carboxyl group (COOH), and in the case of a salt, a carboxylate group (COO - ),
- the hydrophobic functional group and the hydrophilic functional group are located at both ends of the additive, respectively.
- the carboxylic acid-based additive further includes a (B 1 -B 2 ) portion in addition to the A and C portions of both ends, and the (B 1 -B 2 ) portion is for the polymer surface, which may be insufficient only with the C portion. It plays a role in improving the adsorption performance. Accordingly, the additive having the structure of Formula 1, (B 1 -B 2 ) has superior adsorption performance to the surface of the polymer exhibiting hydrophilicity, compared to the compound having an AC structure without a moiety.
- superabsorbent polymer particles comprising a water-soluble ethylenically unsaturated monomer having at least a partially neutralized acidic group and a crosslinked polymer of an internal crosslinking agent;
- a superabsorbent polymer containing a carboxylic acid-based additive A superabsorbent polymer containing a carboxylic acid-based additive
- the carboxylic acid-based additive is at least one selected from the group consisting of a carboxylic acid represented by Formula 1 and a salt thereof,
- the superabsorbent polymer is a mixture of the superabsorbent polymer.
- the water-soluble component measured after swelling the superabsorbent polymer for 1 hour according to the EDANA method WSP 270.2 method is 4 wt% or less based on the total weight of the superabsorbent polymer
- a superabsorbent polymer is provided.
- the superabsorbent polymer includes a plurality of superabsorbent polymer particles comprising a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups and a crosslinked polymer of an internal crosslinking agent.
- the cross-linked polymer is of a form in which a water-soluble ethylenically unsaturated monomer having an acidic group at least partially neutralized is cross-linked in the presence of an internal cross-linking agent, and main chains formed by polymerization of the monomers are cross-linked by the internal cross-linking agent. It has a dimensional network structure.
- the superabsorbent polymer includes a plurality of superabsorbent polymer particles including a crosslinked polymer between a plurality of water-soluble ethylenically unsaturated monomers having at least partially neutralized acidic groups and an internal crosslinking agent.
- the cross-linked polymer has a three-dimensional network structure in which main chains formed by polymerization of the monomers are cross-linked by the internal cross-linking agent, compared to the case of having a two-dimensional linear structure that is not further cross-linked by the internal cross-linking agent
- the water holding capacity and absorbency under pressure which are general physical properties of the superabsorbent polymer, can be significantly improved.
- the super absorbent polymer satisfies the following physical properties 1) and 2):
- the water-soluble component measured after swelling the superabsorbent polymer for 1 hour according to the EDANA method WSP 270.2 method is 4 wt% or less based on the total weight of the superabsorbent polymer
- BPI Base Polymer Index
- the “extractable content” of the superabsorbent polymer refers to a polymer compound that is not crosslinked during the manufacturing process of the superabsorbent polymer, and is not crosslinked due to incomplete crosslinking during polymerization or chopped
- the crosslinking agent may be decomposed during the drying process or the main molecular chain may be broken.
- the water-soluble component of the superabsorbent polymer exceeds 4% by weight based on the total weight of the superabsorbent polymer, the superabsorbent polymer is eluted, causing a problem in that the surface of the hygiene product to be applied becomes sticky or damages the skin.
- the water-soluble component of the superabsorbent polymer may be 4 wt% or less, 3.8 wt% or less, 3.6 wt% or less, 3.5 wt% or less, or 3.4 wt% or less based on the total weight of the superabsorbent polymer.
- the lower the value of the water-soluble component is excellent the lower limit is 0% by weight in theory, but may be, for example, 1% by weight or more, 2% by weight or more, or 3% by weight or more.
- the superabsorbent polymer has a water holding capacity (CRC) of 30 g/g or more, 32 g/g or more, 33 g/g or more, or 34 g/g or more, measured according to the EDANA method WSP 241.3, and 40 g /g or less, or 38 g/g or less, or 36 g/g or less.
- CRC water holding capacity
- the superabsorbent polymer has a BPI (Base Polymer Index) of 31 or more calculated according to Equation 1, and in this case, when the BPI value is less than 31, the content of water-soluble components is It is high, so there may be a problem that strength is lowered due to a weak network of crosslinked polymers in the superabsorbent polymer, and as the rewet phenomenon increases, it is not suitable for hygiene and safety.
- the BPI of the super absorbent polymer may be 32 or more, 33 or more, 34 or more, 35 or more, or 36 or more.
- the BPI value is excellent as the value increases, and there is no upper limit, but may have a value of 45 or less, 43 or less, 40 or less, or 38 or less, for example.
- the water-soluble ethylenically unsaturated monomer may be any monomer commonly used in the preparation of super absorbent polymers.
- the water-soluble ethylenically unsaturated monomer may be a compound represented by the following Chemical Formula 2:
- R is an alkyl group having 2 to 5 carbon atoms including an unsaturated bond
- M' is a hydrogen atom, a monovalent or divalent metal, an ammonium group, or an organic amine salt.
- the monomer may be at least one selected from the group consisting of (meth)acrylic acid and monovalent (alkali) metal salts, divalent metal salts, ammonium salts and organic amine salts of these acids.
- the monomer includes maleic anhydride, fumaric acid, crotonic acid, itaconic acid, 2-acryloylethane sulfonic acid, 2-methacryloylethanesulfonic acid, 2-(meth)acryloylpropanesulfonic acid or 2-(meth) ) acrylamide-2-methyl propane sulfonic acid, (meth) acrylamide, N-substituted (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, methoxypolyethylene Glycol (meth)acrylate, polyethylene glycol (meth)acrylate, (N,N)-dimethylaminoethyl (meth)acrylate, (N,N
- the water-soluble ethylenically unsaturated monomer may have an acidic group, and at least a portion of the acidic group may be neutralized by a neutralizing agent.
- a neutralizing agent a basic material such as sodium hydroxide, potassium hydroxide, ammonium hydroxide, etc. capable of neutralizing an acidic group may be used.
- the degree of neutralization of the water-soluble ethylenically unsaturated monomer which refers to the degree of neutralization by the neutralizing agent among the acidic groups included in the water-soluble ethylenically unsaturated monomer, is 50 to 90 mol%, or, 60 to 85 mol%, or 65 to 85 mole %, or 65 to 75 mole %.
- the range of the degree of neutralization may vary depending on the final physical properties, but if the degree of neutralization is too high, it may be difficult for the polymerization to proceed smoothly due to precipitation of neutralized monomers. It can exhibit properties like elastic rubber, which is difficult to handle.
- the term 'internal crosslinking agent' used in this specification is a term used to distinguish it from a surface crosslinking agent for crosslinking the surface of the superabsorbent polymer particles to be described later. serves to make The crosslinking in the above step proceeds without a surface or internal division, but when the surface crosslinking process of the superabsorbent polymer particles to be described later proceeds, the surface of the particles of the superabsorbent polymer finally produced has a structure crosslinked by a surface crosslinking agent, The interior has a structure crosslinked by the internal crosslinking agent.
- the internal crosslinking agent any compound may be used as long as it enables the introduction of a crosslinking bond during polymerization of the water-soluble ethylenically unsaturated monomer.
- the internal crosslinking agent is N, ,N'-methylenebisacrylamide, trimethylpropane tri (meth) acrylate, ethylene glycol di (meth) acrylate, polyethylene glycol (meth) acrylate, polyethylene glycol di ( Meth) acrylate, propylene glycol di (meth) acrylate, polypropylene glycol (meth) acrylate, butanediol di (meth) acrylate, butylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylic Rate, hexanediol di (meth) acrylate, triethylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate,
- the epoxy-based compound may be used as the internal crosslinking agent.
- ethylene glycol diglycidyl ether may be used as the internal crosslinking agent.
- an acrylate-based compound such as polyethylene glycol di(meth)acrylate
- polymerization is performed in situ. is not formed, and the reaction proceeds slowly, resulting in a low degree of crosslinking. Therefore, the hydrogel polymer prepared using an epoxy-based compound as an internal crosslinking agent has severe surface stickiness compared to a hydrogel polymer prepared using an acrylate-based compound such as polyethylene glycol di(meth)acrylate as an internal crosslinking agent.
- the content of water-soluble components in the superabsorbent polymer finally produced by such a polymer may be high.
- the superabsorbent polymer including the above-described carboxylic acid-based additive even if an epoxy-based compound is used as an internal crosslinking agent, the surface stickiness of the polymer may be reduced.
- an acrylate-based compound such as polyethylene glycol di(meth)acrylate may be used together with the epoxy-based compound.
- crosslinking polymerization of the water-soluble ethylenically unsaturated monomer in the presence of such an internal crosslinking agent may be carried out by thermal polymerization, photopolymerization or hybrid polymerization in the presence of a polymerization initiator, optionally a thickener, plasticizer, storage stabilizer, antioxidant, etc. There, the specific details will be described later.
- the superabsorbent polymer particles may have a particle diameter of about 150 to about 850 ⁇ m, and this particle diameter may be measured according to the European Disposables and Nonwovens Association (EDANA) standard EDANA WSP 220.3 method.
- EDANA European Disposables and Nonwovens Association
- the superabsorbent polymer includes the carboxylic acid-based additive.
- the additive is mixed with the hydrogel polymer and added so that pulverization of the hydrogel polymer can be easily accomplished without agglomeration.
- the carboxylic acid-based additive is at least one selected from the group consisting of the carboxylic acid represented by Formula 1 and a metal salt thereof.
- the carboxylic acid-based additive is a carboxylic acid represented by Formula 1, an alkali metal salt of the carboxylic acid represented by Formula 1, and an alkaline earth metal salt of a carboxylic acid represented by Formula 1 at least one selected from More specifically, the carboxylic acid-based additive is one of the carboxylic acid represented by the formula (1), an alkali metal salt of the carboxylic acid represented by the formula (1), and an alkaline earth metal salt of the carboxylic acid represented by the formula (1).
- A is a hydrophobic portion and may be a linear or branched alkyl group having 5 to 21 carbon atoms, but when A is an alkyl group having a linear structure, in terms of inhibiting aggregation of pulverized particles and improving dispersibility more advantageous
- A is an alkyl group having less than 5 carbon atoms, there is a problem that the aggregation control of the pulverized particles cannot be effectively achieved due to the short chain length, and when A is an alkyl group having more than 21 carbon atoms, the mobility of the additive is reduced and the hydrogel It may not be effectively mixed with the polymer, and there may be a problem in that the cost of the composition increases due to an increase in the cost of the additive.
- A is a linear alkyl having 5 to 21 carbon atoms, that is, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl, n-decanyl, n-undecanyl , n-dodecanyl, n-tridecanyl, n-tetradecanyl, n-pentadecanyl, n-hexadecanyl, n-heptadecanyl, n-octadecanyl, n-nonadecanyl, n- icosanil, or n-heneicosanyl.
- A may be a linear alkyl having 6 to 18 carbon atoms.
- A may be -C 6 H 13 , -C 11 H 23 , -C 12 H 25 , -C 17 H 35 , or -C 18 H 37 .
- the (B 1 -B 2 ) moiety serves to improve the adsorption performance to the polymer surface, which may be insufficient only with the C moiety, and when the carbon number of B 2 is 3 or more, the B 1 moiety As the distance between the portion C and C increases, the adsorption performance for the hydrogel polymer may be deteriorated.
- R 1 and R 2 are each independently, linear or branched alkyl having 1 to 4 carbon atoms, more specifically, R 1 and R 2 are each independently, methyl, ethyl, propyl, isopropyl , butyl, isobutyl, sec-butyl, or tert-butyl, but in terms of adsorption of the additive to the superabsorbent polymer particles, it is advantageous that the molecular structure of the additive is not bulky, so R 1 and R 2 may be all methyl.
- n may be 1, 2, or 3. More specifically, n, meaning the number of (B 1 -B 2 ), is that the (B 1 -B 2 ) part is for reinforcing the adsorption performance for the C part, and the carboxylic acid-based additive is a hydrogel Considering the molecular length for effectively adsorbing to the polymer, n is preferably 1.
- B 1 is , , or may be, where * is a binding site with a neighboring atom.
- B 1 is , or can be
- B 2 is , , ,
- B 2 is , or It is preferable to be
- part C is a hydrophilic moiety and is a carboxyl group (COOH), however, when the carboxylic acid-based additive is a salt, a hydrophilic moiety is a carboxylate group (COO - ).
- the carboxylic acid-based additive may be a compound represented by the following Chemical Formula 1a:
- M is H + , a monovalent cation of an alkali metal, or a divalent cation of an alkaline earth metal,
- k 1 if M is H + or a monovalent cation of an alkali metal, and 2 if M is a divalent cation of an alkaline earth metal,
- the carboxylic acid-based additive is an alkali metal salt of a carboxylic acid represented by Formula 1
- the additive may be represented by Formula 1':
- M 1 is an alkali metal, for example sodium or potassium,
- the carboxylic acid-based additive is an alkaline earth metal salt of a carboxylic acid represented by Formula 1, the additive may be represented by Formula 1”:
- M 2 is an alkaline earth metal, for example, calcium,
- the carboxylic acid-based additive may be any one carboxylic acid selected from the group consisting of:
- the carboxylic acid-based additive may be any one alkali metal salt selected from the group consisting of:
- M 1 is each independently an alkali metal.
- the carboxylic acid-based additive may be any one alkaline earth metal salt selected from the group consisting of:
- M 2 is each independently an alkaline earth metal.
- the carboxylic acid-based additive may be any one of compounds represented by the following Chemical Formulas 1-1 to 1-7, but is not limited thereto:
- the superabsorbent polymer may further include, in addition to the carboxylic acid-based additive, a compound formed by decomposing the ester bond of B 1 while the additive is pulverized together with the hydrogel polymer and then dried.
- the superabsorbent polymer may further include an alcohol having an A-OH structure and a compound having a HOOC-B 2 -C structure.
- the superabsorbent polymer may further include a carboxylic acid having an A-COOH structure and a compound having a HO-B 2 -C structure.
- the superabsorbent polymer when the additive is a compound in which n is 1 and B 1 is -COOCH(R 1 )COO-, the superabsorbent polymer includes a carboxylic acid having an A-COOH structure and HOCH(R 1 )COO-B 2 -C It may further include a compound of the structure.
- the superabsorbent polymer further includes a compound formed by decomposition of an ester bond in an additive molecule, mobility of the additives is increased, and re-agglomeration after pulverization can be further prevented.
- the carboxylic acid-based additive may be included in an amount of 0.01 to 10% by weight based on the total weight of the superabsorbent polymer.
- the super absorbent polymer having the water-soluble component and BPI properties as described above can be implemented when 0.01 to 10 parts by weight of the carboxylic acid-based additive is added based on 100 parts by weight of the water-soluble ethylenically unsaturated monomer when preparing the cross-linked polymer. do.
- the agglomeration control effect of the additive is small and the superabsorbent polymer particles that have not been pulverized to a desired particle size may be included, and the content of the additive is too high.
- the water holding capacity and absorbency under pressure which are general physical properties of the superabsorbent polymer, may be reduced.
- the content of the additive in the superabsorbent polymer is determined by first adding 1 g of the superabsorbent polymer to 1 ml of distilled water, then sufficiently mixing for 1 hour until swelling, then filtering to extract only the solution portion, and then performing HPLC analysis. , it can be measured by analyzing the additive content dissolved in the solution part.
- the carboxylic acid-based additive is 0.01 wt% or more, 0.02 wt% or more, 0.05 wt% or more, 0.1 wt% or more, or 0.5 wt% or more, based on the total weight of the superabsorbent polymer, 10 wt% or less, 8 Weight % or less, 5 wt% or less, 3 wt% or less, 2 wt% or less, or 1 wt% or less may be included.
- the superabsorbent polymer does not further include a surface crosslinking layer, which will be described later, a plurality of superabsorbent polymer particles, the carboxylic acid-based additive, and the additive are hydrolyzed during the manufacturing process of the superabsorbent polymer. Additives other than the hydrolyzate may not be included.
- the superabsorbent polymer of one embodiment may not include a compound having a plurality of hydroxyl groups-containing glucose units in a molecule, such as microcrystalline cellulose.
- a compound having a plurality of hydroxyl groups-containing glucose units in a molecule such as microcrystalline cellulose.
- the superabsorbent polymer contains microcrystalline cellulose having an average particle diameter of 1 to 10 ⁇ m, such as AVICEL ® PH-101 represented by the following formula 3 available from FMC, a plurality of hydroxyl groups Due to this, aggregation between the superabsorbent polymer particles cannot be suppressed, and the effect of the above-described additives may not be effectively expressed.
- the superabsorbent polymer of one embodiment includes polyethylene glycol, polypropylene glycol, poly(ethylene glycol)-poly(propylene glycol) copolymer, polyoxyethylene lauryl ether carboxylic acid, sodium polyoxyethylene lauryl ether carboxylate , may not contain hydrophilic additives such as lauryl sulfate, sodium lauryl sulfate, and the like. Since such additives do not have the (B 1 -B 2 ) moiety of Formula 1 in the molecule, they cannot be sufficiently adsorbed to the surface of the cross-linked polymer, so that aggregation between the super absorbent polymer particles is not effectively suppressed.
- the superabsorbent polymer contains the hydrophilic additive as described above instead of the carboxylic acid-based additive, aggregation between particles is not suppressed after pulverization of the crosslinked polymer, so that the superabsorbent polymer contains a large amount of fine powder and has a low beam It will show the SAT and low apparent density.
- the superabsorbent polymer may further include a surface crosslinking layer formed by further crosslinking the crosslinked polymer through a surface crosslinking agent on at least a portion of the surface of the superabsorbent polymer particles. This is to increase the surface crosslinking density of the superabsorbent polymer particles.
- the superabsorbent polymer particles when the superabsorbent polymer particles further include a surface crosslinking layer, the superabsorbent polymer particles have a structure having a higher crosslinking density on the outside than on the inside.
- the surface crosslinking agent any surface crosslinking agent that has been conventionally used in the manufacture of super absorbent polymers may be used without any particular limitation.
- the surface crosslinking agent is ethylene glycol, propylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, 1,2-hexanediol, 1,3-hexanediol, 2- One selected from the group consisting of methyl-1,3-propanediol, 2,5-hexanediol, 2-methyl-1,3-pentanediol, 2-methyl-2,4-pentanediol, tripropylene glycol and glycerol more than one polyol; at least one carbonate-based compound selected from the group consisting of ethylene carbonate, propylene carbonate, and glycerol carbonate; Epoxy compounds, such as ethylene glycol diglycidyl ether; ox
- one or more, or two or more, or three or more of the above-mentioned surface crosslinking agents may be used as the surface crosslinking agent, for example, ethylene carbonate-propylene carbonate (ECPC), propylene glycol and/or glycerol carbonate can be used.
- ECPC ethylene carbonate-propylene carbonate
- propylene glycol and/or glycerol carbonate can be used.
- step 1 forming a hydrogel polymer by crosslinking and polymerizing a water-soluble ethylenically unsaturated monomer having an acidic group at least partially neutralized in the presence of an internal crosslinking agent, a foaming agent, a carboxylic acid-based additive and a polymerization initiator (step 1); and
- the carboxylic acid-based additive is at least one selected from the group consisting of a carboxylic acid represented by Formula 1 and a salt thereof,
- a method for preparing a super absorbent polymer is provided.
- the step is a step of crosslinking and polymerizing a water-soluble ethylenically unsaturated monomer having an acidic group at least partially neutralized in the presence of an internal crosslinking agent, a foaming agent, a carboxylic acid-based additive and a polymerization initiator to form a hydrogel polymer, wherein the water-soluble ethylenically unsaturated monomer is formed.
- It may consist of preparing a monomer composition by mixing a monomer, a foaming agent, a carboxylic acid-based additive, an internal crosslinking agent, and a polymerization initiator, and thermally or photopolymerizing the monomer composition to form a hydrogel polymer.
- the description of each component refers to the above bar.
- the internal crosslinking agent may be used in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the water-soluble ethylenically unsaturated monomer.
- the internal crosslinking agent is 0.01 parts by weight or more, 0.05 parts by weight or more, or 0.1 parts by weight or more, and 5 parts by weight or less, 3 parts by weight or less, or 2.5 parts by weight or less based on 100 parts by weight of the water-soluble ethylenically unsaturated monomer.
- the content of the upper internal crosslinking agent is too low, crosslinking does not occur sufficiently, and it may be difficult to implement strength above an appropriate level.
- the polymerization initiator may be appropriately selected depending on the polymerization method.
- a thermal polymerization initiator is used, and when using the photopolymerization method, a photopolymerization initiator is used, and a hybrid polymerization method (thermal and light). both of the thermal polymerization initiator and the photopolymerization initiator can be used.
- a certain amount of heat is generated by light irradiation such as ultraviolet irradiation, and a certain amount of heat is generated according to the progress of the polymerization reaction, which is an exothermic reaction, so a thermal polymerization initiator may be additionally used.
- the photopolymerization initiator may be used without limitation in its composition as long as it is a compound capable of forming radicals by light such as ultraviolet rays.
- benzoin ether dialkyl acetophenone, hydroxyl alkylketone, phenyl glyoxylate, benzyl dimethyl ketal Ketal
- acyl phosphine acyl phosphine
- alpha-aminoketone alpha-aminoketone
- acylphosphine examples include diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide, phenylbis (2,4,6-trimethylbenzoyl) phosphine oxide, ethyl (2,4,6- trimethylbenzoyl)phenylphosphinate etc. are mentioned.
- a more diverse photoinitiator is well described in Reinhold Schwalm's book “UV Coatings: Basics, Recent Developments and New Application (Elsevier 2007)" p115, but is not limited to the above-described examples.
- thermal polymerization initiator one or more selected from the group consisting of a persulfate-based initiator, an azo-based initiator, hydrogen peroxide, and ascorbic acid may be used.
- a persulfate-based initiator include sodium persulfate (Na 2 S 2 O 8 ), potassium persulfate (K 2 S 2 O 8 ), ammonium persulfate (Ammonium persulfate; (NH 4 ) 2 S 2 O 8 ) and the like
- examples of the azo-based initiator include 2,2-azobis-(2-amidinopropane) dihydrochloride (2,2-azobis(2-amidinopropane) dihydrochloride), 2 ,2-Azobis-(N,N-dimethylene)isobutyramidine dihydrochloride (2,2-azobis-(N,N-dimethylene)isobutyramidine dihydrochloride), 2-(carbamoylazo)iso
- the polymerization initiator may be used in an amount of 2 parts by weight or less based on 100 parts by weight of the water-soluble ethylenically unsaturated monomer. That is, when the concentration of the polymerization initiator is too low, the polymerization rate may be slowed and the residual monomer may be extracted in a large amount in the final product, which is not preferable. Conversely, when the concentration of the polymerization initiator is higher than the above range, the polymer chain constituting the network is shortened, so that the content of the water-soluble component is increased and the physical properties of the resin may be lowered, such as lowered absorbency under pressure, which is not preferable.
- the monomer composition may further include additives such as a thickener, a plasticizer, a preservation stabilizer, and an antioxidant, if necessary.
- additives such as a thickener, a plasticizer, a preservation stabilizer, and an antioxidant, if necessary.
- the monomer composition including the monomer may be in a solution state dissolved in a solvent such as water, and the solid content in the monomer composition in the solution state, that is, the concentration of the monomer, the internal crosslinking agent, and the polymerization initiator It may be appropriately adjusted in consideration of time and reaction conditions.
- the solids content in the monomer composition may be 10 to 80% by weight, or 15 to 60% by weight, or 30 to 50% by weight.
- the monomer composition has a solid content in the above range, it is not necessary to remove unreacted monomers after polymerization by using the gel effect phenomenon that occurs in the polymerization reaction of a high concentration aqueous solution, and the pulverization efficiency when pulverizing the polymer to be described later is improved. It can be advantageous to control.
- the solvent that can be used at this time can be used without limitation in its composition as long as it can dissolve the above-mentioned components, for example, water, ethanol, ethylene glycol, diethylene glycol, triethylene glycol, 1,4-butanediol, propylene glycol , Ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, methyl ethyl ketone, acetone, methyl amyl ketone, cyclohexanone, cyclopentanone, diethylene glycol monomethyl ether, diethylene glycol ethyl ether , toluene, xylene, butyrolactone, carbitol, methyl cellosolve acetate and N,N-dimethylacetamide may be used in combination.
- the encapsulated foaming agent refers to a thermally expandable microcapsule foaming agent having a core-shell structure, and has a core-shell structure including a core including hydrocarbon and a shell made of a thermoplastic resin formed on the core.
- the hydrocarbon constituting the core is a liquid hydrocarbon having a low boiling point and is easily vaporized by heat. Therefore, when heat is applied to the encapsulated foaming agent, the thermoplastic resin constituting the shell is softened and the liquid hydrocarbon of the core is vaporized at the same time, and expands as the pressure inside the capsule increases, and thus the size increased from the existing size of bubbles are formed.
- the encapsulated foaming agent generates hydrocarbon gas, and an organic foaming agent that generates nitrogen gas through exothermic decomposition reaction between monomers participating in the production of a polymer, and an inorganic foaming agent that absorbs heat generated during polymer production and foams carbon dioxide gas It is distinct from foaming agents.
- the encapsulated foaming agent may have different expansion characteristics depending on the weight and diameter of the components constituting the core and the shell and the weight and diameter of each component. have.
- the encapsulated foaming agent has an average diameter (D 0 ) before expansion in the form of particles of 5 to 30 ⁇ m. It is difficult in manufacturing to make the encapsulated foaming agent have an average diameter of less than 5 ⁇ m, and when the average diameter of the encapsulated foaming agent exceeds 30 ⁇ m, it may be difficult to efficiently increase the surface area because the size of the pores is too large. have. Therefore, when the encapsulated foaming agent exhibits the average diameter as described above, it can be determined that it is suitable for achieving an appropriate degree of pore structure in the resin.
- the average diameter before expansion of the encapsulated foaming agent is 5 ⁇ m or more, 6 ⁇ m or more, 7 ⁇ m or more, 8 ⁇ m or more, or 10 ⁇ m or more, and also 30 ⁇ m or less, 25 ⁇ m or less, 20 ⁇ m or less, 17 It may be less than or equal to 16 ⁇ m, or less than or equal to 15 ⁇ m.
- the average diameter (D 0 ) of the encapsulated foaming agent before expansion can be measured by measuring the diameter of each of the encapsulated foaming agent particles as an average Feret diameter through an optical microscope, and then obtaining their average value.
- the capsule thickness of the encapsulated foaming agent may be 2 to 15 ⁇ m.
- the encapsulated foaming agent has a maximum expansion size in air of 20 to 190 ⁇ m.
- the "maximum expansion size of the encapsulated foaming agent” means the diameter range of the particles of the top 10% by weight of the highly expanded particles after heat is applied to the encapsulated foaming agent. Making the expansion size smaller than 20 ⁇ m is difficult in manufacturing, and when the maximum expansion size in air exceeds 190 ⁇ m, it may be difficult to efficiently increase the surface area because the size of the pores is too large.
- the encapsulated blowing agent may have a maximum expansion size in air of 50 to 190 ⁇ m, or 70 to 190 ⁇ m, 75 to 190 ⁇ m, or 80 to 150 ⁇ m.
- the maximum expansion size of this encapsulated foaming agent in air is, after 0.2 g of the encapsulated foaming agent is applied on a glass Petri dish, and left on a hot plate preheated to 150° C. for 10 minutes, and then the expanded encapsulated foaming agent is observed under an optical microscope.
- the diameter of the top 10% by weight of the highly expanded particles can be obtained by measuring the average Feret diameter through an optical microscope.
- the encapsulated foaming agent has a maximum expansion ratio in air of 5 to 15 times.
- the "maximum expansion ratio of the encapsulated foaming agent” means the average diameter of the top 10% by weight of the highly expanded particles after applying heat to the average diameter (D 0 ) measured before applying heat of the encapsulated foaming agent ( D M ) means the ratio (D M /D 0 ) If the maximum expansion ratio in air of the encapsulated foaming agent is less than 5 times, an appropriate pore structure cannot be formed in the superabsorbent polymer, so even if it is used, the There is a problem in that it is impossible to prepare a superabsorbent polymer with improved absorption capacity and absorption rate at the same time, and so that the maximum expansion ratio of the encapsulated foaming agent in air exceeds 15 times the average diameter of the encapsulated foaming agent before expansion. Therefore, it can be determined that the encapsulated foaming agent having the maximum expansion ratio in the above-described range is suitable for forming
- the maximum expansion ratio in air of the encapsulated blowing agent may be 5 times or more, 7 times or more, or 8 times or more, and may also be 15 times or less, 13 times or less, 11 times or less, or 10 times or less.
- the average diameter (D 0 ) measured before applying heat to the encapsulated foaming agent may be measured as described above.
- the average diameter (D M ) of the top 10% by weight of the highly expanded particles after heat of the encapsulated foaming agent is applied is 10 on a hot plate preheated to 150° C. after applying 0.2 g of the encapsulated foaming agent on a glass Petri dish. After standing for a minute, the expanded encapsulated foaming agent was observed with an optical microscope, and the diameter of each of the particles of the top 10% by weight of the highly expanded particles was measured as an average Feret diameter through an optical microscope, and then the average value of these was measured can be obtained and measured.
- the expansion characteristics of the encapsulated foaming agent may be further specified in Examples to be described later.
- the reason for measuring the maximum expansion size and the maximum expansion ratio of the encapsulated foaming agent in air is to determine whether pores of a desired size are formed in the superabsorbent polymer produced using the encapsulated foaming agent.
- the form in which the foaming agent is foamed may vary depending on the manufacturing conditions of the superabsorbent polymer, so it is difficult to define one form. Therefore, by first foaming the encapsulated foaming agent in the air to check the expansion size and expansion ratio, it can be confirmed whether the encapsulated foaming agent is suitable for forming the desired pores.
- the hydrocarbon constituting the core of the encapsulated foaming agent is n-propane, n-butane, iso-butane, cyclobutane, n-pentane, iso-pentane, cyclopentane, n-hexane, iso-hexane, cyclohexane, It may be at least one selected from the group consisting of n-heptane, iso-heptane, cycloheptane, n-octane, iso-octane and cyclooctane.
- hydrocarbons having 3 to 5 carbon atoms are suitable for forming pores having the above-mentioned size, and iso- Butane may be most suitable.
- thermoplastic resin constituting the shell of the encapsulated foaming agent is selected from the group consisting of (meth)acrylate-based compounds, (meth)acrylonitrile-based compounds, aromatic vinyl-based compounds, vinyl acetate-based compounds, and halogenated vinyl-based compounds. It may be a polymer formed from one or more monomers. Among them, a copolymer of (meth)acrylate and (meth)acrylonitrile may be most suitable for forming pores having the above-mentioned size.
- the foaming start temperature (T start ) of the encapsulated foaming agent may be 60 °C to 120 °C, or 65 °C to 120 °C, or 70 °C to 80 °C, and the maximum foaming temperature (T max ) is 100 °C to 160 °C °C, or 105 °C to 155 °C, or 110 °C to 120 °C.
- T start the foaming start temperature
- T max the maximum foaming temperature
- T max is 100 °C to 160 °C °C, or 105 °C to 155 °C, or 110 °C to 120 °C.
- foaming may occur easily in a subsequent thermal polymerization process or drying process to introduce a pore structure in the polymer.
- the foaming start temperature and the foaming maximum temperature can be measured using a thermomechanical analyzer.
- the encapsulated foaming agent may be used in an amount of 0.05 to 1 part by weight based on 100 parts by weight of the water-soluble ethylenically unsaturated monomer.
- the content of the foaming agent is less than 0.05 parts by weight, the role as a foaming agent may be insignificant, and when the content of the foaming agent exceeds 1 part by weight, there are too many pores in the crosslinked polymer, so the stickiness of the hydrogel polymer increases, so that the water-soluble component and BPI Not only the value may be reduced, but the gel strength of the superabsorbent polymer to be manufactured may decrease and the density may decrease, which may cause problems in distribution and storage.
- the encapsulated foaming agent is 0.05 parts by weight or more, 0.07 parts by weight or more, 0.09 parts by weight or more, or 0.1 parts by weight or more, and 0.8 parts by weight or less, 0.5 parts by weight or less relative to 100 parts by weight of the water-soluble ethylenically unsaturated monomer , 0.3 parts by weight or less, or 0.2 parts by weight or less.
- the foam stabilizer may include at least one compound selected from the group consisting of an alkyl sulfate compound and a polyoxyethylene alkyl ether compound.
- the alkyl sulfate-based compound include sodium dodecyl sulfate, ammonium lauryl sulfate, sodium lauryl ether sulfate, or sodium myreth sulfate. and the like, and examples of the polyoxyethylene alkyl ether-based compound include polyoxyethylene lauryl ether.
- the alkyl sulfate-based compound is an anionic surfactant
- the polyoxyethylene alkyl ether-based compound is a nonionic surfactant.
- the encapsulated foaming agent and the foam stabilizer may be used in a weight ratio of 1:0.01 to 1:0.5.
- the carboxylic acid-based additive may be mixed in a dry manner, dissolved in a solvent and then mixed in a solution state, or the additive may be melted and then mixed.
- the additive may be mixed in a solution state dissolved in a solvent.
- any kind of solvent may be used without limitation to an inorganic solvent or an organic solvent, but water is most suitable in consideration of the ease of the drying process and the cost of the solvent recovery system.
- the carboxylic acid-based additive may be used in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the water-soluble ethylenically unsaturated monomer. At this time, when the carboxylic acid-based additive is used in less than 0.01 parts by weight, it is not sufficient to serve to reduce the surface stickiness of the hydrogel polymer, and when the carboxylic acid-based additive is used in excess of 10 parts by weight, foaming occurs Unreacted products may be generated.
- the carboxylic acid-based additive is 0.05 parts by weight or more, 0.1 parts by weight or more, and 2 parts by weight or less, 1 part by weight or less, 0.5 parts by weight or less, or 0.4 parts by weight or less based on 100 parts by weight of the water-soluble ethylenically unsaturated monomer. This is suitable for minimizing the surface stickiness of the hydrogel polymer and not reducing the absorption performance of the superabsorbent polymer.
- cross-linking polymerization of a water-soluble ethylenically unsaturated monomer having at least a partially neutralized acidic group may proceed without limitation in structure, as long as the hydrogel polymer can be formed by thermal polymerization, photopolymerization, or hybrid polymerization.
- the polymerization method is largely divided into thermal polymerization and photopolymerization according to the polymerization energy source.
- thermal polymerization when thermal polymerization is carried out, it may be carried out in a reactor having a stirring shaft such as a kneader.
- the process may be carried out in a reactor equipped with a conveyor belt or in a flat-bottomed container, the polymerization method described above is an example, and the present invention is not limited to the polymerization method described above.
- the hydrogel polymer obtained by thermal polymerization by supplying hot air or heating the reactor to a reactor such as a kneader having a stirring shaft is fed to the reactor outlet according to the shape of the stirring shaft provided in the reactor.
- the discharged hydrogel polymer may be in the form of several centimeters to several millimeters.
- the size of the obtained hydrogel polymer may vary depending on the concentration and injection rate of the injected monomer composition, and a hydrogel polymer having a weight average particle diameter of 2 to 50 mm can be obtained.
- the form of the hydrogel polymer obtained may be a hydrogel polymer on a sheet having the width of the belt.
- the thickness of the polymer sheet varies depending on the concentration of the injected monomer composition and the injection rate or injection amount, but it is preferable to supply the monomer composition so that a polymer sheet having a thickness of usually about 0.5 to about 5 cm can be obtained. do.
- the monomer composition is supplied so that the thickness of the polymer on the sheet is too thin, the production efficiency is low, which is not preferable.
- the thickness of the polymer on the sheet exceeds 5 cm, the polymerization reaction occurs evenly over the entire thickness due to the excessive thickness it may not be
- the hydrogel polymer obtained by this method may have a moisture content of 30 to 70 wt%.
- the water content of the hydrogel polymer may be 35% by weight or more, 40% by weight or more, 45% by weight or more, or 50% by weight or more, and 70% by weight or less, 65% by weight or less, or 60% by weight or less. . If the water content of the hydrogel polymer is too low, it may not be effectively pulverized because it is difficult to secure an appropriate surface area in the subsequent pulverization step. it can be difficult to do
- moisture content refers to a value obtained by subtracting the weight of the polymer in a dry state from the weight of the hydrogel polymer as the amount of moisture occupied with respect to the total weight of the hydrogel polymer. Specifically, it is defined as a value calculated by measuring the weight loss due to evaporation of moisture in the polymer during drying by raising the temperature of the polymer in the crumb state through infrared heating. At this time, the drying condition is set to 40 minutes including 5 minutes of the temperature rise step in such a way that the temperature is raised from room temperature to about 180°C and then maintained at 180°C, and the moisture content is measured.
- the surface stickiness index (at 25°C temperature condition) measured according to the methods of 1) to 4) below with respect to the hydrogel polymer may be 200 g or less:
- the "bottom surface" of the hydrogel polymer means a surface that does not directly receive a light source for polymerization in contact with the reaction vessel during polymerization, and since this floor surface usually has stickiness, the stickiness index as described above can be used to measure
- the surface stickiness index of the hydrogel polymer may be 200 g or less, 180 g or less, 150 g or less, or 50 g or less.
- the lower the surface stickiness index of the hydrogel polymer the more advantageous the lower limit thereof is 0 g, but may be, for example, 5 g or more, 10 g or more, or 20 g or more.
- the above step is a step of preparing the final super absorbent polymer by drying the prepared hydrogel polymer and then pulverizing it to a normal particle level.
- the pulverizer used is not limited in configuration, but a vertical pulverizer, a turbo cutter, a turbo grinder, a rotary cutter mill, a cutting pulverizer ( Cutter mill), a disc mill, a shred crusher, a crusher, a chopper, and a disc cutter may include any one selected from the group consisting of a grinding device. , but not limited to the above example.
- the chopping may be performed by a chopper, more specifically, a meat chopper.
- the meat chopper may include a minced module including one or more perforated plates, and each of the perforated plates may be provided with a plurality of minced pores having a predetermined size through which the hydrogel polymer can pass.
- the hole size of the small hole of the perforated plate may be 3 mm to 16 mm.
- an extruder may be used to extrude the hydrogel polymer, for example, a single or multiple screw type extruder may be used.
- the chopped hydrogel polymer is dried to remove moisture.
- the moisture content of each of the plurality of superabsorbent polymer particles included in the prepared superabsorbent polymer is about 10% by weight or less, specifically, about 0.01 to about 10% by weight. It can be carried out as much as possible.
- the drying temperature of the drying step may be about 150 to about 250 °C.
- the drying temperature is less than 150°C, the drying time is excessively long and there is a risk that the physical properties of the superabsorbent polymer to be finally formed may decrease. fine powder may occur, and there is a risk that the physical properties of the superabsorbent polymer finally formed may be deteriorated. Therefore, preferably, the drying may be carried out at a temperature of about 150 to about 200 °C, more preferably at a temperature of about 160 to about 180 °C.
- the drying time may be performed for about 20 minutes to about 90 minutes, but is not limited thereto.
- the drying method of the drying step may be selected and used without limitation in its composition, as long as it is commonly used in the drying process of the hydrogel polymer. Specifically, the drying step may be performed by a method such as hot air supply, infrared irradiation, microwave irradiation, or ultraviolet irradiation. After the drying step, the moisture content of the polymer may be about 5 to about 10% by weight.
- the base resin which is a polymer powder obtained after the pulverization step, may have a particle diameter of about 150 to about 850 ⁇ m.
- the grinder used for grinding to such a particle size is specifically, a pin mill, a hammer mill, a screw mill, a roll mill, a disc mill, or a jog. A mill (jog mill) or the like may be used, but the present invention is not limited to the above-described examples.
- the base resin obtained after pulverization is classified according to particle size.
- the polymer having a particle diameter of about 150 to about 850 ⁇ m is classified, and only the base resin having such a particle diameter may be subjected to a surface crosslinking reaction step.
- the particle size may be measured according to the European Disposables and Nonwovens Association (EDANA) standard EDANA WSP 220.3 method.
- the method may further include forming a surface crosslinking layer on at least a portion of the surface of the superabsorbent polymer particles in the presence of a surface crosslinking agent.
- the crosslinked polymer included in the superabsorbent polymer particles may be further crosslinked through the surface crosslinking agent, thereby forming a surface crosslinking layer on at least a portion of the surfaces of the superabsorbent polymer particles.
- the surface crosslinking agent any surface crosslinking agent that has been conventionally used in the manufacture of super absorbent polymers may be used without any particular limitation.
- the surface crosslinking agent is ethylene glycol, propylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, 1,2-hexanediol, 1,3-hexanediol, 2- One selected from the group consisting of methyl-1,3-propanediol, 2,5-hexanediol, 2-methyl-1,3-pentanediol, 2-methyl-2,4-pentanediol, tripropylene glycol and glycerol more than one polyol; at least one carbonate-based compound selected from the group consisting of ethylene carbonate, propylene carbonate, and glycerol carbonate; Epoxy compounds, such as ethylene glycol diglycidyl ether; ox
- one or more, or two or more, or three or more of the above-mentioned surface crosslinking agents may be used as the surface crosslinking agent, for example, ethylene carbonate-propylene carbonate (ECPC), propylene glycol and/or glycerol carbonate can be used.
- ECPC ethylene carbonate-propylene carbonate
- propylene glycol and/or glycerol carbonate can be used.
- the surface crosslinking agent may be used in an amount of about 0.001 to about 5 parts by weight based on 100 parts by weight of the superabsorbent polymer particles.
- the surface crosslinking agent is 0.005 parts by weight or more, 0.01 parts by weight or more, or 0.05 parts by weight or more, and 5 parts by weight or less, 4 parts by weight or less, or 3 parts by weight or less based on 100 parts by weight of the superabsorbent polymer particles.
- content can be used. By adjusting the content range of the surface crosslinking agent to the above-mentioned range, a superabsorbent polymer having excellent absorbent properties can be prepared.
- the step of forming the surface crosslinking layer may be performed by adding an inorganic material to the surface crosslinking agent. That is, in the presence of the surface crosslinking agent and the inorganic material, the step of further crosslinking the surface of the superabsorbent polymer particles to form a surface crosslinking layer may be performed.
- the inorganic material at least one inorganic material selected from the group consisting of silica, clay, alumina, silica-alumina composite, titania, zinc oxide, and aluminum sulfate may be used.
- the inorganic material may be used in powder form or liquid form, and in particular, may be used as alumina powder, silica-alumina powder, titania powder, or nano silica solution.
- the inorganic material may be used in an amount of about 0.001 to about 1 part by weight based on 100 parts by weight of the superabsorbent polymer particles.
- composition of the method of mixing the surface crosslinking agent with the superabsorbent polymer composition there is no limitation on the composition of the method of mixing the surface crosslinking agent with the superabsorbent polymer composition.
- a method of mixing the surface crosslinking agent and the superabsorbent polymer composition in a reaction tank, spraying the surface crosslinking agent to the superabsorbent polymer composition, or continuously supplying and mixing the superabsorbent polymer composition and the surface crosslinking agent to a continuously operated mixer method and the like can be used.
- the surface crosslinking agent and the superabsorbent polymer composition are mixed, water and methanol may be mixed and added.
- water and methanol are added, there is an advantage that the surface crosslinking agent can be uniformly dispersed in the superabsorbent polymer composition.
- the content of the added water and methanol may be appropriately adjusted to induce even dispersion of the surface crosslinking agent, prevent agglomeration of the superabsorbent polymer composition, and at the same time optimize the surface penetration depth of the crosslinking agent.
- the surface crosslinking process may be performed at a temperature of about 80 °C to about 250 °C. More specifically, the surface crosslinking process may be performed at a temperature of about 100° C. to about 220° C., or about 120° C. to about 200° C., for about 20 minutes to about 2 hours, or about 40 minutes to about 80 minutes. . When the above-mentioned surface crosslinking process conditions are satisfied, the surface of the superabsorbent polymer particles may be sufficiently crosslinked to increase absorbency under pressure.
- a means for increasing the temperature for the surface crosslinking reaction is not particularly limited. It can be heated by supplying a heating medium or by directly supplying a heat source.
- a heating medium such as steam, hot air, or hot oil may be used, but it is not limited thereto, and the temperature of the supplied heating medium depends on the means of the heating medium, the temperature increase rate and the temperature increase target temperature. Considering it, it can be appropriately selected.
- the directly supplied heat source may be a heating method through electricity or a heating method through a gas, but is not limited to the above-described example.
- F-36D As an encapsulated foaming agent used in Examples, F-36D manufactured by Matsumoto, which has a core of iso-butane and a shell of a copolymer of acrylate and acrylonitrile, was prepared. At this time, the foaming start temperature (Tstart) of the F-36D is 70 °C to 80 °C, and the maximum foaming temperature (Tmax) is 110 °C to 120 °C.
- each encapsulated blowing agent was measured as an average Feret diameter through an optical microscope. Then, the average value of the diameters of the encapsulated foaming agents was obtained and defined as the average diameter of the encapsulated foaming agents.
- 0.2 g of the prepared encapsulated foaming agent was applied on a glass Petri dish, and then left on a hot plate preheated to 150° C. for 10 minutes.
- the encapsulated foaming agent expands slowly by heat, which was observed under an optical microscope to measure the maximum expansion ratio and maximum expansion size of the encapsulated foaming agent in air.
- the diameter of the top 10% by weight was measured in the order of the most expanded particles and defined as the maximum expanded size, and the average diameter (D0) measured before heating the encapsulated foaming agent was applied After that, the ratio (DM/D0) of the average diameter (DM) of the top 10 wt% of the expanded particles was determined and defined as the maximum expansion ratio.
- the average diameter of the prepared encapsulated foaming agent before expansion was 13 ⁇ m, the maximum expansion ratio in air was about 9 times, and the maximum expansion size was about 80 to 150 ⁇ m.
- the monomer composition was supplied at a rate of 500 to 2000 mL/min on a conveyor belt in which a belt having a width of 10 cm and a length of 2 m was rotated at a speed of 50 cm/min. And, at the same time as the supply of the monomer composition, the polymerization reaction was carried out for 60 seconds by irradiating ultraviolet rays having an intensity of 10 mW/cm 2 , to obtain a sheet-type hydrogel polymer having a moisture content of 50 wt%.
- the hydrogel polymer obtained through the polymerization reaction was coarsely pulverized using a meat chopper so that the hydrogel polymer had a particle diameter of 300 ⁇ m to 5000 ⁇ m.
- a meat chopper including a perforated plate having a number of small cut holes having a hole size of 3 mm was used as the meat chopper.
- the pulverized material was dried in hot air at 180° C. for 43 minutes using a convection oven capable of transferring air volume up and down to obtain a dry powdery base resin.
- a superabsorbent polymer having a particle size of 150 to 850 ⁇ m was prepared by classifying the obtained product through a standard mesh sieve of ASTM standard.
- a super absorbent polymer was prepared in the same manner as in Example 1, except that 0.15 g of the encapsulated foaming agent (F-36D) was used in Example 1.
- a super absorbent polymer was prepared in the same manner as in Example 1, except that 0.2 g of the encapsulated foaming agent (F-36D) was used in Example 1.
- a superabsorbent polymer was prepared in the same manner as in Example 1, except that 0.1 g of sodium stearoyl-2-lactylate represented by Formula 1-6 was used in Example 1.
- the superabsorbent polymer resin was used in the same manner as in Example 1, except that monolauryl maleate represented by the following formula 1-1 was used instead of sodium stearoyl-2-lactylate in Example 1 was prepared.
- monolauryl maleate represented by the following Chemical Formula 1-1 was prepared by mixing maleic acid anhydride and 1-dodecanol in a molar ratio of 1:1 and reacting at 60° C. for 3 hours.
- the superabsorbent polymer resin was used in the same manner as in Example 1, except that monostearyl maleate represented by the following Chemical Formula 1-4 was used instead of sodium stearoyl-2-lactylate in Example 1 was prepared.
- monostearyl maleate represented by the following Chemical Formula 1-4 was prepared by mixing maleic acid anhydride and stearyl alcohol in a molar ratio of 1:1 and reacting at 80° C. for 3 hours. .
- the superabsorbent polymer resin was used in the same manner as in Example 1, except that monolauryl succinate represented by the following formula 1-5 was used instead of sodium stearoyl-2-lactylate in Example 1 was prepared.
- the monolauryl succinate represented by the following Chemical Formula 1-5 was prepared by mixing succinic acid anhydride and 1-dodecanol in a molar ratio of 1:1 and reacting at 110° C. for 3 hours. .
- a super absorbent polymer was prepared in the same manner as in Example 1, except that sodium stearoyl-2-lactylate was not used in Example 1.
- a super absorbent polymer was prepared in the same manner as in Example 1, except that sodium stearoyl-2-lactylate was not used in Example 1, and 0.15 g of an encapsulated foaming agent (F-36D) was used. .
- a super absorbent polymer was prepared in the same manner as in Example 1, except that in Example 1, 0.2 g of an encapsulated foaming agent (F-36D) was used without sodium stearoyl-2-lactylate. .
- Example 1 a super absorbent polymer was prepared using sodium stearate instead of sodium stearoyl-2-lactylate, but it was insoluble in water and did not mix with the monomer composition. A water absorbent resin could not be prepared.
- centrifugation retention capacity CRC
- absorbency under pressure AUP
- absorption rate liquid permeability
- caking prevention efficiency were respectively measured in the following manner. is shown in Table 1 below. Unless otherwise indicated, all of the following physical property evaluation was performed in a constant temperature and humidity room (23 ⁇ 2° C., relative humidity 45 ⁇ 10%), and the average value of three measurements was taken as measurement data to prevent measurement errors.
- physiological saline or saline means 0.9 wt% sodium chloride (NaCl) aqueous solution.
- a resin composition classified through a sieve of #30-50 was obtained.
- This resin composition W 0 (g) (about 0.2 g) was uniformly put in a non-woven bag and sealed, and then immersed in physiological saline (0.9 wt %) at room temperature. After 30 minutes, the bag was drained of water for 3 minutes under the conditions of 250G using a centrifuge, and the mass W 2 (g) of the bag was measured. Moreover, after performing the same operation without using resin, the mass W1 (g) at that time was measured.
- CRC (g/g) ⁇ [W 2 (g) - W 1 (g)]/W 0 (g) ⁇ - 1
- the sample was swelled for 1 hour according to the EDANA method WSP 270.2 method, and then water-soluble components were measured.
- BPI values were obtained according to Equation 1 below using the CRC and water-soluble components obtained above. In this case, the calculated value was rounded off to two decimal places.
- the surface stickiness index (25°C temperature condition) measured according to the methods 1) to 4) below was measured, but one superabsorbent After measuring the resin three times with a separate specimen, the average value was obtained.
- the superabsorbent polymer of Examples including the carboxylic acid represented by Formula 1 or a salt thereof showed significantly higher stickiness of the hydrogel polymer during the manufacturing process compared to the superabsorbent polymer of Comparative Example. It can be seen that, based on the total weight of the superabsorbent polymer, a water-soluble component of 4 wt% or less and a Base Polymer Index (BPI) value of 31 or more are exhibited.
- BPI Base Polymer Index
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
첨가제 함량1) |
캡슐화된 발포제 함량2) |
함수겔 중합체의 표면 끈적임 여부 |
고흡수성 수지 물성 | ||||
정성 분석 |
정량분석 (force, g) |
CRC (g/g) |
E/C (중량%) |
BPI | |||
실시예 1 |
0.4 | 0.1 | X | 28 | 35.0 | 3.3 | 36.7 |
실시예2 | 0.4 | 0.15 | X | 30 | 34.7 | 3.3 | 36.4 |
실시예3 | 0.4 | 0.2 | △ | 35 | 34.8 | 3.4 | 35.6 |
실시예4 | 0.1 | 0.1 | △ | 154 | 35.1 | 3.7 | 33.5 |
실시예5 | 0.4 | 0.1 | X | 30 | 34.9 | 3.3 | 36.6 |
실시예6 | 0.4 | 0.1 | X | 29 | 35.0 | 3.3 | 36.7 |
실시예7 | 0.4 | 0.1 | X | 31 | 34.8 | 3.3 | 36.5 |
비교예 1 |
- | 0.1 | △ | 219 | 34.3 | 4.2 | 30.0 |
비교예 2 |
- | 0.15 | O | 366 | 34.7 | 4.3 | 29.8 |
비교예3 | - | 0.2 | O | 401 | 34.4 | 4.6 | 28.3 |
Claims (15)
- 적어도 일부가 중화된 산성기를 갖는 수용성 에틸렌계 불포화 단량체 및 내부 가교제의 가교 중합체를 포함하는 고흡수성 수지 입자; 및카르복실산계 첨가제를 포함하는 고흡수성 수지로,상기 카르복실산계 첨가제는 하기 화학식 1로 표시되는 카르복실산 및 이의 염으로 구성되는 군으로부터 선택되는 1종 이상이고,상기 고흡수성 수지는,1) EDANA 법 WSP 270.2 방법에 따라 상기 고흡수성 수지를 1 시간 동안 팽윤시킨 후 측정된 수가용 성분이 고흡수성 수지 총중량 기준 4 중량% 이하이고,2) 하기 수학식 1에 따라 계산되는 BPI(Base Polymer Index)가 31 이상인,고흡수성 수지:[화학식 1]상기 화학식 1에서,A는 탄소수 5 내지 21의 알킬이고,B1은 -OCO-, -COO-, 또는 -COOCH(R1)COO-이고,B2는 -CH2-, -CH2CH2-, -CH(R2)-, -CH=CH-, 또는 -C≡C-이고,여기서, R1 및 R2는 각각 독립적으로, 탄소수 1 내지 4의 알킬이고,n은 1 내지 3의 정수이고,C는 카르복실기이고,[수학식 1]상기 수학식 1에서,CRC는 EDANA 법 WSP 241.3의 방법에 따라 측정한 원심분리 보수능을 의미하고,In (수가용 성분의 함량)은 상기 수가용 성분의 함량의 자연 로그값을 의미한다.
- 제1항에 있어서,상기 화학식 1에서,A는 -C6H13, -C11H23, -C12H25, -C17H35, 또는 -C18H37인,고흡수성 수지.
- 제1항에 있어서,상기 카르복실산계 첨가제는 상기 화학식 1로 표시되는 카르복실산, 이의 알칼리금속염 및 이의 알칼리토금속염으로 구성되는 군으로부터 선택되는 1종 이상인,고흡수성 수지.
- 상기 고흡수성 수지 입자의 표면 중 적어도 일부에, 표면 가교제를 매개로 상기 가교 중합체가 추가 가교되어 형성된 표면 가교층을 더 포함하는,고흡수성 수지.
- 내부 가교제, 캡슐화된 발포제, 카르복실산계 첨가제 및 중합 개시제의 존재 하에, 적어도 일부가 중화된 산성기를 갖는 수용성 에틸렌계 불포화 단량체를 가교 중합하여 함수겔 중합체를 형성하는 단계(단계 1); 및상기 함수겔 중합체를 건조 및 분쇄하는 단계 (단계 2)를 포함하고,상기 카르복실산계 첨가제는 하기 화학식 1로 표시되는 카르복실산 및 이의 염으로 구성되는 군으로부터 선택되는 1종 이상인,고흡수성 수지의 제조 방법:[화학식 1]상기 화학식 1에서,A는 탄소수 5 내지 21의 알킬이고,B1은 -OCO-, -COO-, 또는 -COOCH(R1)COO-이고,B2는 -CH2-, -CH2CH2-, -CH(R2)-, -CH=CH-, 또는 -C≡C-이고,여기서, R1 및 R2는 각각 독립적으로, 탄소수 1 내지 4의 알킬이고,n은 1 내지 3의 정수이고,C는 카르복실기이다.
- 제8항에 있어서,상기 캡슐화된 발포제는 탄화수소를 포함하는 코어와 상기 코어를 둘러싸며 열가소성 수지로 형성되는 쉘을 포함하는 구조를 갖는,고흡수성 수지의 제조 방법.
- 제9항에 있어서,상기 탄화수소는 n-프로판, n-부탄, iso-부탄, 사이클로부탄, n-펜탄, iso-펜탄, 사이클로펜탄, n-헥산, iso-헥산, 사이클로헥산, n-헵탄, iso-헵탄, 사이클로헵탄, n-옥탄, iso-옥탄 및 사이클로옥탄으로 구성된 군에서 선택된 1 종 이상이고,상기 열가소성 수지는 (메트)아크릴레이트계 화합물, (메트)아크릴로니트릴계 화합물, 방향족 비닐계 화합물, 초산 비닐계 화합물 및 할로겐화 비닐계 화합물로 구성된 군에서 선택된 1 종 이상의 모노머로부터 형성되는 폴리머인고흡수성 수지의 제조 방법.
- 제8항에 있어서,상기 캡슐화된 발포제는 팽창 전의 평균 직경이 5 내지 30 ㎛이며, 공기 중에서의 최대 팽창 비율이 5 내지 15 배인,고흡수성 수지의 제조 방법.
- 제8항에 있어서,상기 캡슐화된 발포제는 상기 수용성 에틸렌계 불포화 단량체 100 중량부 대비 0.05 내지 1 중량부로 사용되는,고흡수성 수지의 제조 방법.
- 제8항에 있어서,상기 카르복실산계 첨가제는 수용성 에틸렌계 불포화 단량체 100 중량부 대비 0.01 내지 10 중량부로 사용되는,고흡수성 수지의 제조 방법.
- 제8항에 있어서,상기 함수겔 중합체에 대하여 하기 1) 내지 4)의 방법에 따라 측정한 표면끈적임 지수(25℃ 온도 조건)가 200 g 이하인,고흡수성 수지의 제조 방법:1) 바닥면(함수겔 중합체 제조 시 반응 용기와 닿는 면)을 구비한 함수겔 중합체를 가로 2.5 cm * 세로 2.5 cm * 두께 2 cm 로 컷팅한 2개의 시편을 제조하는 단계;2) 제조된 2개의 시편 각각을 Texture Analyzer 기기의 위/아래 홀더에 각각 넣어 고정하되, 이때 상기 2개의 시편은 시편의 바닥면이 각 홀더 바깥으로 1 mm 나오도록 고정되는 단계;3) 상기 2개의 시편이 고정된 위/아래 홀더를 홀더 간의 거리가 1 mm가 되도록 접근시켜 상기 2개의 시편의 바닥면을 부착시킨 후, 이를 5 초간 유지하는 단계; 및4) 상기 위 홀더를 잡아당겨 상기 2개의 시편이 부착된 부분이 떨어질 때의 최대 힘(max force, g)을 측정하여, 이를 표면끈적임 지수로 하는 단계.
- 제8항에 있어서,표면 가교제의 존재 하에, 제조된 고흡수성 수지의 입자의 표면 중 적어도 일부에 표면 가교층을 형성하는 단계를 더 포함하는,고흡수성 수지의 제조 방법.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202180015090.XA CN115135699A (zh) | 2020-11-27 | 2021-11-10 | 超吸收性聚合物及其制备方法 |
US17/910,766 US20230111749A1 (en) | 2020-11-27 | 2021-11-10 | Super absorbent polymer and preparation method thereof |
JP2022550004A JP7471723B2 (ja) | 2020-11-27 | 2021-11-10 | 高吸水性樹脂およびその製造方法 |
EP21898436.7A EP4089139A4 (en) | 2020-11-27 | 2021-11-10 | SUPERABSORBENT POLYMER AND METHOD OF PRODUCTION THEREOF |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20200162890 | 2020-11-27 | ||
KR10-2020-0162890 | 2020-11-27 | ||
KR10-2021-0152460 | 2021-11-08 | ||
KR1020210152460A KR20220074735A (ko) | 2020-11-27 | 2021-11-08 | 고흡수성 수지 및 이의 제조 방법 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022114610A1 true WO2022114610A1 (ko) | 2022-06-02 |
Family
ID=81756082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2021/016321 WO2022114610A1 (ko) | 2020-11-27 | 2021-11-10 | 고흡수성 수지 및 이의 제조 방법 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20230111749A1 (ko) |
EP (1) | EP4089139A4 (ko) |
JP (1) | JP7471723B2 (ko) |
CN (1) | CN115135699A (ko) |
WO (1) | WO2022114610A1 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102578742B1 (ko) * | 2019-09-18 | 2023-09-14 | 주식회사 엘지화학 | 고흡수성 수지의 제조 방법 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997038740A1 (en) * | 1996-04-18 | 1997-10-23 | Minnesota Mining And Manufacturing Company | Compressed absorbent aggregate |
KR20120043165A (ko) * | 2009-04-07 | 2012-05-03 | 에보닉 스톡하우젠 게엠베하 | 수분 흡수성 폴리머 구조 제조용 할로우체의 사용 |
KR20200087616A (ko) * | 2019-01-11 | 2020-07-21 | 주식회사 엘지화학 | 고흡수성 수지의 제조 방법 |
WO2021125559A1 (ko) * | 2019-12-20 | 2021-06-24 | 주식회사 엘지화학 | 고흡수성 수지 조성물 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102639229A (zh) * | 2009-09-28 | 2012-08-15 | 熊海山 | 吸附合成物及其方法 |
KR102417078B1 (ko) * | 2017-09-05 | 2022-07-04 | 주식회사 엘지화학 | 고흡수성 수지 |
KR102422636B1 (ko) * | 2018-12-10 | 2022-07-19 | 주식회사 엘지화학 | 고흡수성 수지의 제조 방법 |
-
2021
- 2021-11-10 US US17/910,766 patent/US20230111749A1/en active Pending
- 2021-11-10 CN CN202180015090.XA patent/CN115135699A/zh active Pending
- 2021-11-10 WO PCT/KR2021/016321 patent/WO2022114610A1/ko active Application Filing
- 2021-11-10 JP JP2022550004A patent/JP7471723B2/ja active Active
- 2021-11-10 EP EP21898436.7A patent/EP4089139A4/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997038740A1 (en) * | 1996-04-18 | 1997-10-23 | Minnesota Mining And Manufacturing Company | Compressed absorbent aggregate |
KR20120043165A (ko) * | 2009-04-07 | 2012-05-03 | 에보닉 스톡하우젠 게엠베하 | 수분 흡수성 폴리머 구조 제조용 할로우체의 사용 |
KR20200087616A (ko) * | 2019-01-11 | 2020-07-21 | 주식회사 엘지화학 | 고흡수성 수지의 제조 방법 |
WO2021125559A1 (ko) * | 2019-12-20 | 2021-06-24 | 주식회사 엘지화학 | 고흡수성 수지 조성물 |
Non-Patent Citations (4)
Title |
---|
ODIAN: "Principle of Polymerization", 1981, WILEY, pages: 203 |
REINHOLD SCHWALM: "UV Coatings: Basics, Recent Developments and New Application", 2007, ELSEVIER, pages: 115 |
See also references of EP4089139A4 |
WU JIHUAI, LIN JIANMING, LI GUOQING, WEI CONGRONG: "Influence of the COOH and COONa groups and crosslink density of poly(acrylic acid)/montmorillonite superabsorbent composite on water absorbency", POLYMER INTERNATIONAL, BARKING, GB, vol. 50, no. 9, 1 September 2001 (2001-09-01), GB , pages 1050 - 1053, XP055933540, ISSN: 0959-8103, DOI: 10.1002/pi.728 * |
Also Published As
Publication number | Publication date |
---|---|
JP2023514628A (ja) | 2023-04-06 |
CN115135699A (zh) | 2022-09-30 |
EP4089139A1 (en) | 2022-11-16 |
US20230111749A1 (en) | 2023-04-13 |
JP7471723B2 (ja) | 2024-04-22 |
EP4089139A4 (en) | 2023-07-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2022065843A1 (ko) | 생분해성 고흡수성 수지 및 이의 제조 방법 | |
WO2021194203A1 (ko) | 고흡수성 수지 필름의 제조 방법 | |
WO2021125871A1 (ko) | 고흡수성 수지 조성물의 제조 방법 | |
WO2021125872A1 (ko) | 고흡수성 수지 조성물의 제조 방법 | |
WO2022055290A1 (ko) | 고흡수성 수지 및 이의 제조 방법 | |
WO2021125559A1 (ko) | 고흡수성 수지 조성물 | |
WO2022114610A1 (ko) | 고흡수성 수지 및 이의 제조 방법 | |
WO2022114609A1 (ko) | 고흡수성 수지의 제조 방법 | |
WO2023287262A1 (ko) | 고흡수성 수지의 제조 방법 | |
WO2021071246A1 (ko) | 고흡수성 수지의 제조 방법 | |
WO2022265466A1 (ko) | 고흡수성 수지의 제조 방법 | |
WO2021150095A1 (ko) | 고흡수성 수지의 제조 방법 | |
WO2022124767A1 (ko) | 고흡수성 수지의 제조 방법 | |
WO2021125560A1 (ko) | 고흡수성 수지 조성물 | |
WO2022265459A1 (ko) | 고흡수성 수지의 제조 방법 및 고흡수성 수지 | |
WO2022265471A1 (ko) | 고흡수성 수지의 제조 방법 및 고흡수성 수지 | |
WO2023075482A1 (ko) | 고흡수성 수지 조성물 및 이의 제조 방법 | |
WO2022265475A1 (ko) | 고흡수성 수지의 제조 방법 및 고흡수성 수지 | |
WO2024128449A1 (ko) | 고흡수성 수지의 제조방법 | |
WO2022265468A1 (ko) | 고흡수성 수지의 제조 방법 | |
WO2024005426A1 (ko) | 생분해성 고흡수성 수지 및 이의 제조 방법 | |
WO2024135976A1 (ko) | 고흡수성 수지의 제조 방법 | |
WO2024128871A1 (ko) | 고흡수성 수지의 제조 방법 | |
WO2022131838A1 (ko) | 고흡수성 수지 및 이의 제조 방법 | |
WO2024136394A1 (ko) | 고흡수성 수지의 제조 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21898436 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2022550004 Country of ref document: JP Kind code of ref document: A Ref document number: 2021898436 Country of ref document: EP Effective date: 20220812 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202217050865 Country of ref document: IN |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112022017976 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 112022017976 Country of ref document: BR Kind code of ref document: A2 Effective date: 20220908 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |