KR102772653B1 - 유기 용매의 정제 방법 - Google Patents
유기 용매의 정제 방법 Download PDFInfo
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- KR102772653B1 KR102772653B1 KR1020227003208A KR20227003208A KR102772653B1 KR 102772653 B1 KR102772653 B1 KR 102772653B1 KR 1020227003208 A KR1020227003208 A KR 1020227003208A KR 20227003208 A KR20227003208 A KR 20227003208A KR 102772653 B1 KR102772653 B1 KR 102772653B1
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- Prior art keywords
- ion exchange
- exchange resin
- organic solvent
- resin
- solvent
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- 239000003960 organic solvent Substances 0.000 title claims abstract description 114
- 238000000034 method Methods 0.000 title claims abstract description 55
- 239000003456 ion exchange resin Substances 0.000 claims abstract description 131
- 229920003303 ion-exchange polymer Polymers 0.000 claims abstract description 131
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 239000000203 mixture Substances 0.000 claims abstract description 57
- 239000003729 cation exchange resin Substances 0.000 claims abstract description 48
- 125000000129 anionic group Chemical group 0.000 claims abstract description 43
- 230000002378 acidificating effect Effects 0.000 claims abstract description 42
- 239000012535 impurity Substances 0.000 claims abstract description 28
- 239000000356 contaminant Substances 0.000 claims abstract description 27
- 239000002904 solvent Substances 0.000 claims description 110
- 239000011347 resin Substances 0.000 claims description 77
- 229920005989 resin Polymers 0.000 claims description 77
- 229910052751 metal Inorganic materials 0.000 claims description 58
- 239000002184 metal Substances 0.000 claims description 56
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 32
- 238000011282 treatment Methods 0.000 claims description 14
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000006227 byproduct Substances 0.000 abstract description 3
- 239000005022 packaging material Substances 0.000 description 31
- 238000005342 ion exchange Methods 0.000 description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 30
- 230000000052 comparative effect Effects 0.000 description 26
- 150000001768 cations Chemical class 0.000 description 19
- 239000010410 layer Substances 0.000 description 16
- 239000002253 acid Substances 0.000 description 15
- 241001550224 Apha Species 0.000 description 12
- 239000003957 anion exchange resin Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000006460 hydrolysis reaction Methods 0.000 description 10
- 239000011324 bead Substances 0.000 description 9
- 239000012508 resin bead Substances 0.000 description 9
- 239000004809 Teflon Substances 0.000 description 8
- 229920006362 Teflon® Polymers 0.000 description 8
- 230000008859 change Effects 0.000 description 8
- 230000007062 hydrolysis Effects 0.000 description 8
- 150000002739 metals Chemical class 0.000 description 8
- 229910021642 ultra pure water Inorganic materials 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 125000002091 cationic group Chemical group 0.000 description 7
- 230000004807 localization Effects 0.000 description 7
- 229910021645 metal ion Inorganic materials 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 6
- 230000003301 hydrolyzing effect Effects 0.000 description 6
- 239000012046 mixed solvent Substances 0.000 description 6
- 238000000746 purification Methods 0.000 description 6
- 239000012498 ultrapure water Substances 0.000 description 6
- 229940023913 cation exchange resins Drugs 0.000 description 5
- 150000002148 esters Chemical class 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 239000011877 solvent mixture Substances 0.000 description 5
- 150000001408 amides Chemical class 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- MYRTYDVEIRVNKP-UHFFFAOYSA-N divinylbenzene Substances C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 230000008961 swelling Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 3
- 238000005341 cation exchange Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000012776 electronic material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007086 side reaction Methods 0.000 description 3
- 238000007614 solvation Methods 0.000 description 3
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- LZCLXQDLBQLTDK-UHFFFAOYSA-N ethyl 2-hydroxypropanoate Chemical compound CCOC(=O)C(C)O LZCLXQDLBQLTDK-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- JOLQKTGDSGKSKJ-UHFFFAOYSA-N 1-ethoxypropan-2-ol Chemical compound CCOCC(C)O JOLQKTGDSGKSKJ-UHFFFAOYSA-N 0.000 description 1
- FENFUOGYJVOCRY-UHFFFAOYSA-N 1-propoxypropan-2-ol Chemical compound CCCOCC(C)O FENFUOGYJVOCRY-UHFFFAOYSA-N 0.000 description 1
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 1
- VXQBJTKSVGFQOL-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethyl acetate Chemical compound CCCCOCCOCCOC(C)=O VXQBJTKSVGFQOL-UHFFFAOYSA-N 0.000 description 1
- FPZWZCWUIYYYBU-UHFFFAOYSA-N 2-(2-ethoxyethoxy)ethyl acetate Chemical compound CCOCCOCCOC(C)=O FPZWZCWUIYYYBU-UHFFFAOYSA-N 0.000 description 1
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 1
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 description 1
- DJCYDDALXPHSHR-UHFFFAOYSA-N 2-(2-propoxyethoxy)ethanol Chemical compound CCCOCCOCCO DJCYDDALXPHSHR-UHFFFAOYSA-N 0.000 description 1
- WAEVWDZKMBQDEJ-UHFFFAOYSA-N 2-[2-(2-methoxypropoxy)propoxy]propan-1-ol Chemical compound COC(C)COC(C)COC(C)CO WAEVWDZKMBQDEJ-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- YTTFFPATQICAQN-UHFFFAOYSA-N 2-methoxypropan-1-ol Chemical compound COC(C)CO YTTFFPATQICAQN-UHFFFAOYSA-N 0.000 description 1
- BTZVKSVLFLRBRE-UHFFFAOYSA-N 2-methoxypropyl acetate Chemical compound COC(C)COC(C)=O BTZVKSVLFLRBRE-UHFFFAOYSA-N 0.000 description 1
- YEYKMVJDLWJFOA-UHFFFAOYSA-N 2-propoxyethanol Chemical compound CCCOCCO YEYKMVJDLWJFOA-UHFFFAOYSA-N 0.000 description 1
- LBVMWHCOFMFPEG-UHFFFAOYSA-N 3-methoxy-n,n-dimethylpropanamide Chemical compound COCCC(=O)N(C)C LBVMWHCOFMFPEG-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- MRABAEUHTLLEML-UHFFFAOYSA-N Butyl lactate Chemical compound CCCCOC(=O)C(C)O MRABAEUHTLLEML-UHFFFAOYSA-N 0.000 description 1
- 206010012241 Delusion of grandeur Diseases 0.000 description 1
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-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
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005349 anion exchange Methods 0.000 description 1
- 239000001191 butyl (2R)-2-hydroxypropanoate Substances 0.000 description 1
- 125000002843 carboxylic acid group Chemical group 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 1
- UYAAVKFHBMJOJZ-UHFFFAOYSA-N diimidazo[1,3-b:1',3'-e]pyrazine-5,10-dione Chemical compound O=C1C2=CN=CN2C(=O)C2=CN=CN12 UYAAVKFHBMJOJZ-UHFFFAOYSA-N 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 229940113088 dimethylacetamide Drugs 0.000 description 1
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- BHXIWUJLHYHGSJ-UHFFFAOYSA-N ethyl 3-ethoxypropanoate Chemical compound CCOCCC(=O)OCC BHXIWUJLHYHGSJ-UHFFFAOYSA-N 0.000 description 1
- 229940116333 ethyl lactate Drugs 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-M hexanoate Chemical compound CCCCCC([O-])=O FUZZWVXGSFPDMH-UHFFFAOYSA-M 0.000 description 1
- -1 i.e. Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000001455 metallic ions Chemical class 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- GQKLTNAIFDFUDN-UHFFFAOYSA-N n-(2-hydroxyethyl)propanamide Chemical compound CCC(=O)NCCO GQKLTNAIFDFUDN-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 125000002081 peroxide group Chemical group 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- PHEDXBVPIONUQT-RGYGYFBISA-N phorbol 13-acetate 12-myristate Chemical compound C([C@]1(O)C(=O)C(C)=C[C@H]1[C@@]1(O)[C@H](C)[C@H]2OC(=O)CCCCCCCCCCCCC)C(CO)=C[C@H]1[C@H]1[C@]2(OC(C)=O)C1(C)C PHEDXBVPIONUQT-RGYGYFBISA-N 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 229940116423 propylene glycol diacetate Drugs 0.000 description 1
- 238000013094 purity test Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 125000000467 secondary amino group Chemical class [H]N([*:1])[*:2] 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000012607 strong cation exchange resin Substances 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000012608 weak cation exchange resin Substances 0.000 description 1
Classifications
-
- 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
- B01J47/00—Ion-exchange processes in general; Apparatus therefor
- B01J47/02—Column or bed processes
- B01J47/04—Mixed-bed processes
-
- 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
- B01J39/00—Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
- B01J39/04—Processes using organic exchangers
- B01J39/07—Processes using organic exchangers in the weakly acidic form
-
- 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
- B01J41/00—Anion exchange; Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
- B01J41/04—Processes using organic exchangers
- B01J41/07—Processes using organic exchangers in the weakly basic form
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/34—Separation; Purification; Stabilisation; Use of additives
- C07C41/36—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C43/00—Ethers; Compounds having groups, groups or groups
- C07C43/02—Ethers
- C07C43/03—Ethers having all ether-oxygen atoms bound to acyclic carbon atoms
- C07C43/04—Saturated ethers
- C07C43/13—Saturated ethers containing hydroxy or O-metal groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/56—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/02—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen
- C07C69/12—Acetic acid esters
- C07C69/14—Acetic acid esters of monohydroxylic compounds
Abstract
Description
Claims (10)
- 친수성 및 가수분해성 유기 용매의 혼합물로부터, 유기 불순물의 증가 없이, 이온성 오염물을 제거함으로써, 친수성 유기 용매 및 가수분해성 유기 용매의 혼합물을 정제하는 방법으로서, 상기 방법은 친수성 및 가수분해성 유기 용매의 혼합물을, 이온 교환 수지의 혼합 층(bed)과 접촉시키는 단계를 포함하고; 여기서 이온 교환 수지의 혼합 층이 (a) 약산성 양이온성 이온 교환 수지 및 (b) 약염기 음이온성 이온 교환 수지의 혼합물을 포함하는, 방법.
- ◈청구항 2은(는) 설정등록료 납부시 포기되었습니다.◈제1항에 있어서, 이온성 오염물은 금속성 및 비금속성 이온성 오염물을 포함하는, 방법.
- 제1항에 있어서, 약산성 양이온성 이온 교환 수지는 거대망상(macroreticular) 유형 수지이고, 약염기 음이온성 이온 교환 수지는 거대망상 유형 수지인, 방법.
- 제1항에 있어서, 친수성 유기 용매 및 가수분해성 유기 용매의 혼합물은 프로필렌 글리콜 모노 메틸 에테르 및 프로필렌 글리콜 모노 메틸 에테르 아세테이트의 혼합물이고, 프로필렌 글리콜 모노 메틸 에테르 및 프로필렌 글리콜 모노 메틸 에테르 아세테이트의 비는 1/99 내지 99/1일 수 있는, 방법.
- 제1항에 있어서, 거대망상 유형 약산성 양이온성 이온 교환 수지 및 거대망상 유형 약염기 음이온성 이온 교환 수지의 조합은 화학적 당량으로 1:9 내지 9:1의 블렌드 비율인, 방법.
- ◈청구항 6은(는) 설정등록료 납부시 포기되었습니다.◈제1항에 있어서, 용매가 이온 교환 수지 처리에 적용된 후 용매의 금속 오염물 수준은 50 ppt 미만인, 방법.
- ◈청구항 7은(는) 설정등록료 납부시 포기되었습니다.◈제1항에 있어서, 가수분해성 유기 용매는 에스테르 결합을 가진 화합물인, 방법.
- 유기 용매로부터 이온성 오염물을 제거하는 방법으로서,
(a) 양이온성 이온 교환 수지 및 음이온성 이온 교환 수지를 포함하는 이온 교환 수지의 혼합 층을 제조하는 단계로서, 여기서 양이온성 이온 교환 수지는 약산성 양이온성 이온 교환 수지이고; 음이온성 이온 교환 수지는 약염기 음이온성 이온 교환 수지인 단계; 및
(b) 친수성 유기 용매 및 가수분해성 유기 용매의 혼합물을, 단계 (a)의 이온 교환 수지의 혼합 층과 접촉시키는 단계를 포함하는, 방법. - ◈청구항 9은(는) 설정등록료 납부시 포기되었습니다.◈제8항에 있어서, 단계 (b)는 유기 용매를, 이온 교환 수지의 혼합 층으로 채워진 컬럼에서 유동시킴으로써 행해지는, 방법.
- ◈청구항 10은(는) 설정등록료 납부시 포기되었습니다.◈제9항에 있어서, 유기 용매의 유속은 1 층 부피/시간 내지 100 층 부피/시간인, 방법.
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