WO2006038503A1 - 複合逆浸透膜の製造方法 - Google Patents
複合逆浸透膜の製造方法 Download PDFInfo
- Publication number
- WO2006038503A1 WO2006038503A1 PCT/JP2005/017829 JP2005017829W WO2006038503A1 WO 2006038503 A1 WO2006038503 A1 WO 2006038503A1 JP 2005017829 W JP2005017829 W JP 2005017829W WO 2006038503 A1 WO2006038503 A1 WO 2006038503A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- aqueous solution
- porous support
- reverse osmosis
- osmosis membrane
- composite reverse
- Prior art date
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 88
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 80
- 239000002131 composite material Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title abstract description 33
- 230000008569 process Effects 0.000 title abstract description 11
- 239000007864 aqueous solution Substances 0.000 claims abstract description 130
- 239000000243 solution Substances 0.000 claims abstract description 100
- 238000000576 coating method Methods 0.000 claims abstract description 89
- 239000011248 coating agent Substances 0.000 claims abstract description 79
- 238000004519 manufacturing process Methods 0.000 claims abstract description 54
- 229920002647 polyamide Polymers 0.000 claims abstract description 36
- 239000004952 Polyamide Substances 0.000 claims abstract description 25
- 239000002253 acid Substances 0.000 claims abstract description 22
- 150000004820 halides Chemical class 0.000 claims abstract description 22
- 238000012695 Interfacial polymerization Methods 0.000 claims abstract description 15
- 150000001875 compounds Chemical class 0.000 claims abstract description 5
- 125000003277 amino group Chemical group 0.000 claims abstract description 4
- 239000011247 coating layer Substances 0.000 claims description 51
- 239000010410 layer Substances 0.000 claims description 40
- 229920001971 elastomer Polymers 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 8
- 239000011148 porous material Substances 0.000 abstract description 3
- 238000009937 brining Methods 0.000 abstract 1
- 150000001412 amines Chemical class 0.000 description 42
- 238000003618 dip coating Methods 0.000 description 21
- 239000010408 film Substances 0.000 description 18
- 239000007788 liquid Substances 0.000 description 18
- 239000003570 air Substances 0.000 description 14
- 239000010409 thin film Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 12
- 238000001035 drying Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 150000003839 salts Chemical class 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 7
- 230000004907 flux Effects 0.000 description 7
- 239000003960 organic solvent Substances 0.000 description 7
- 238000011056 performance test Methods 0.000 description 7
- 239000012466 permeate Substances 0.000 description 7
- 229920002492 poly(sulfone) Polymers 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 description 6
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- -1 aromatic acid halide Chemical class 0.000 description 6
- 229940018564 m-phenylenediamine Drugs 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 125000003118 aryl group Chemical group 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000004745 nonwoven fabric Substances 0.000 description 5
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 4
- 125000002723 alicyclic group Chemical group 0.000 description 4
- 125000001931 aliphatic group Chemical group 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- MIOPJNTWMNEORI-GMSGAONNSA-N (S)-camphorsulfonic acid Chemical compound C1C[C@@]2(CS(O)(=O)=O)C(=O)C[C@@H]1C2(C)C MIOPJNTWMNEORI-GMSGAONNSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 239000002152 aqueous-organic solution Substances 0.000 description 3
- UWCPYKQBIPYOLX-UHFFFAOYSA-N benzene-1,3,5-tricarbonyl chloride Chemical compound ClC(=O)C1=CC(C(Cl)=O)=CC(C(Cl)=O)=C1 UWCPYKQBIPYOLX-UHFFFAOYSA-N 0.000 description 3
- 229920002301 cellulose acetate Polymers 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 2
- 239000004695 Polyether sulfone Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229920006311 Urethane elastomer Polymers 0.000 description 2
- 150000004982 aromatic amines Chemical class 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- JSYBAZQQYCNZJE-UHFFFAOYSA-N benzene-1,2,4-triamine Chemical compound NC1=CC=C(N)C(N)=C1 JSYBAZQQYCNZJE-UHFFFAOYSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 239000012433 hydrogen halide Substances 0.000 description 2
- 229910000039 hydrogen halide Inorganic materials 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000006068 polycondensation reaction Methods 0.000 description 2
- 229920006393 polyether sulfone Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000001488 sodium phosphate Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 2
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 2
- 235000019801 trisodium phosphate Nutrition 0.000 description 2
- 229910021642 ultra pure water Inorganic materials 0.000 description 2
- 239000012498 ultrapure water Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 1
- VPMMJSPGZSFEAH-UHFFFAOYSA-N 2,4-diaminophenol;hydrochloride Chemical compound [Cl-].NC1=CC=C(O)C([NH3+])=C1 VPMMJSPGZSFEAH-UHFFFAOYSA-N 0.000 description 1
- VOZKAJLKRJDJLL-UHFFFAOYSA-N 2,4-diaminotoluene Chemical compound CC1=CC=C(N)C=C1N VOZKAJLKRJDJLL-UHFFFAOYSA-N 0.000 description 1
- RLYCRLGLCUXUPO-UHFFFAOYSA-N 2,6-diaminotoluene Chemical compound CC1=C(N)C=CC=C1N RLYCRLGLCUXUPO-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- GNIZQCLFRCBEGE-UHFFFAOYSA-N 3-phenylbenzene-1,2-dicarbonyl chloride Chemical compound ClC(=O)C1=CC=CC(C=2C=CC=CC=2)=C1C(Cl)=O GNIZQCLFRCBEGE-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- GKXVJHDEWHKBFH-UHFFFAOYSA-N [2-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC=C1CN GKXVJHDEWHKBFH-UHFFFAOYSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- YARQLHBOIGUVQM-UHFFFAOYSA-N benzene-1,2,3-trisulfonyl chloride Chemical compound ClS(=O)(=O)C1=CC=CC(S(Cl)(=O)=O)=C1S(Cl)(=O)=O YARQLHBOIGUVQM-UHFFFAOYSA-N 0.000 description 1
- YBGQXNZTVFEKEN-UHFFFAOYSA-N benzene-1,2-disulfonyl chloride Chemical compound ClS(=O)(=O)C1=CC=CC=C1S(Cl)(=O)=O YBGQXNZTVFEKEN-UHFFFAOYSA-N 0.000 description 1
- RPHKINMPYFJSCF-UHFFFAOYSA-N benzene-1,3,5-triamine Chemical compound NC1=CC(N)=CC(N)=C1 RPHKINMPYFJSCF-UHFFFAOYSA-N 0.000 description 1
- FDQSRULYDNDXQB-UHFFFAOYSA-N benzene-1,3-dicarbonyl chloride Chemical compound ClC(=O)C1=CC=CC(C(Cl)=O)=C1 FDQSRULYDNDXQB-UHFFFAOYSA-N 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- BZFATHSFIGBGOT-UHFFFAOYSA-N butane-1,1,1-tricarbonyl chloride Chemical compound CCCC(C(Cl)=O)(C(Cl)=O)C(Cl)=O BZFATHSFIGBGOT-UHFFFAOYSA-N 0.000 description 1
- LRHPLDYGYMQRHN-UHFFFAOYSA-N butyl alcohol Substances CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- XWALRFDLDRDCJG-UHFFFAOYSA-N cyclobutane-1,1,2,2-tetracarbonyl chloride Chemical compound ClC(=O)C1(C(Cl)=O)CCC1(C(Cl)=O)C(Cl)=O XWALRFDLDRDCJG-UHFFFAOYSA-N 0.000 description 1
- LXLCHRQXLFIZNP-UHFFFAOYSA-N cyclobutane-1,1-dicarbonyl chloride Chemical compound ClC(=O)C1(C(Cl)=O)CCC1 LXLCHRQXLFIZNP-UHFFFAOYSA-N 0.000 description 1
- PBWUKDMYLKXAIP-UHFFFAOYSA-N cyclohexane-1,1,2-tricarbonyl chloride Chemical compound ClC(=O)C1CCCCC1(C(Cl)=O)C(Cl)=O PBWUKDMYLKXAIP-UHFFFAOYSA-N 0.000 description 1
- MLCGVCXKDYTMRG-UHFFFAOYSA-N cyclohexane-1,1-dicarbonyl chloride Chemical compound ClC(=O)C1(C(Cl)=O)CCCCC1 MLCGVCXKDYTMRG-UHFFFAOYSA-N 0.000 description 1
- SSJXIUAHEKJCMH-UHFFFAOYSA-N cyclohexane-1,2-diamine Chemical compound NC1CCCCC1N SSJXIUAHEKJCMH-UHFFFAOYSA-N 0.000 description 1
- GEQHKFFSPGPGLN-UHFFFAOYSA-N cyclohexane-1,3-diamine Chemical compound NC1CCCC(N)C1 GEQHKFFSPGPGLN-UHFFFAOYSA-N 0.000 description 1
- VKIRRGRTJUUZHS-UHFFFAOYSA-N cyclohexane-1,4-diamine Chemical compound NC1CCC(N)CC1 VKIRRGRTJUUZHS-UHFFFAOYSA-N 0.000 description 1
- DCXMNNZFVFSGJX-UHFFFAOYSA-N cyclopentane-1,1,2,2-tetracarbonyl chloride Chemical compound ClC(=O)C1(C(Cl)=O)CCCC1(C(Cl)=O)C(Cl)=O DCXMNNZFVFSGJX-UHFFFAOYSA-N 0.000 description 1
- JREFGECMMPJUHM-UHFFFAOYSA-N cyclopentane-1,1,2-tricarbonyl chloride Chemical compound ClC(=O)C1CCCC1(C(Cl)=O)C(Cl)=O JREFGECMMPJUHM-UHFFFAOYSA-N 0.000 description 1
- YYLFLXVROAGUFH-UHFFFAOYSA-N cyclopentane-1,1-dicarbonyl chloride Chemical compound ClC(=O)C1(C(Cl)=O)CCCC1 YYLFLXVROAGUFH-UHFFFAOYSA-N 0.000 description 1
- CRMQURWQJQPUMY-UHFFFAOYSA-N cyclopropane-1,1,2-tricarbonyl chloride Chemical compound ClC(=O)C1CC1(C(Cl)=O)C(Cl)=O CRMQURWQJQPUMY-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 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
- 238000004070 electrodeposition Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- KYTZHLUVELPASH-UHFFFAOYSA-N naphthalene-1,2-dicarboxylic acid Chemical compound C1=CC=CC2=C(C(O)=O)C(C(=O)O)=CC=C21 KYTZHLUVELPASH-UHFFFAOYSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- MEQCXWDKLOGGRO-UHFFFAOYSA-N oxolane-2,3,4,5-tetracarbonyl chloride Chemical compound ClC(=O)C1OC(C(Cl)=O)C(C(Cl)=O)C1C(Cl)=O MEQCXWDKLOGGRO-UHFFFAOYSA-N 0.000 description 1
- MTAAPVANJNSBGV-UHFFFAOYSA-N pentane-1,1,1-tricarbonyl chloride Chemical compound CCCCC(C(Cl)=O)(C(Cl)=O)C(Cl)=O MTAAPVANJNSBGV-UHFFFAOYSA-N 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- VLRIRAGKJXODNO-UHFFFAOYSA-N propane-1,1,1-tricarbonyl chloride Chemical compound CCC(C(Cl)=O)(C(Cl)=O)C(Cl)=O VLRIRAGKJXODNO-UHFFFAOYSA-N 0.000 description 1
- AOHJOMMDDJHIJH-UHFFFAOYSA-N propylenediamine Chemical compound CC(N)CN AOHJOMMDDJHIJH-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- JWHOQZUREKYPBY-UHFFFAOYSA-N rubonic acid Natural products CC1(C)CCC2(CCC3(C)C(=CCC4C5(C)CCC(=O)C(C)(C)C5CC(=O)C34C)C2C1)C(=O)O JWHOQZUREKYPBY-UHFFFAOYSA-N 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- XZPVPNZTYPUODG-UHFFFAOYSA-M sodium;chloride;dihydrate Chemical compound O.O.[Na+].[Cl-] XZPVPNZTYPUODG-UHFFFAOYSA-M 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- LXEJRKJRKIFVNY-UHFFFAOYSA-N terephthaloyl chloride Chemical compound ClC(=O)C1=CC=C(C(Cl)=O)C=C1 LXEJRKJRKIFVNY-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- MBYLVOKEDDQJDY-UHFFFAOYSA-N tris(2-aminoethyl)amine Chemical compound NCCN(CCN)CCN MBYLVOKEDDQJDY-UHFFFAOYSA-N 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000010887 waste solvent Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
- B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
- B01D69/1251—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction by interfacial polymerisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
- B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/12—Controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0006—Organic membrane manufacture by chemical reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
- B01D69/1214—Chemically bonded layers, e.g. cross-linking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/56—Polyamides, e.g. polyester-amides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/30—Cross-linking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/42—Details of membrane preparation apparatus
Definitions
- the present invention relates to a method for producing composite reverse osmosis in which a polyamide skin layer is formed on the surface of a porous support. Specifically, water permeation and salt blocking performance used for desalination of seawater and brine water, production of ultrapure water, concentration of valuables in the pharmaceutical and food industries, treatment of industrial wastewater such as dyed wastewater and thundercoat paint wastewater, etc.
- the present invention relates to a method for efficiently and continuously producing a composite reverse osmosis membrane having excellent performance.
- Composite reverse osmosis membranes are widely used for the production of ultrapure water, brine, or desalination of seawater. It also contributes to the close-up of drainage by removing and collecting pollution sources or active substances contained in it from stains that cause pollution such as dyed wastewater and electrodeposition paint wastewater. Furthermore, it is also used for the concentration of active ingredients in food applications.
- reverse osmosis membranes used industrially include asymmetric cellulose acetate membranes (Patent Documents 1 and 2) and asymmetric polyamide membranes (Patent Document 3). Although these membranes had excellent performance at that time, they did not have sufficient performance to obtain high water permeability and high blocking performance at lower pressures. In addition, the cellulose acetate membrane has a drawback that it tends to cause membrane degradation due to microorganisms and hydrolysis. As a reverse osmosis membrane having a different structure from that of the asymmetric membrane that eliminates these drawbacks, a composite reverse osmosis membrane has been developed in which a thin film having a substantially selective separation function is formed on a porous support.
- Patent Document 4 a dip coating method that is, first, a porous support reinforced with a nonwoven fabric or a woven fabric is continuously run, transported and immersed in an aqueous solution tank containing a polyfunctional aromatic amine, and the aqueous solution is coated on both surfaces of the porous support. . Next, the excess aqueous solution is removed with a rubber roller or the like.
- a polyamide thin film is formed by transporting and immersing in an organic solution bath immiscible with the aqueous solution and interfacially superimposing on the surface of the porous support. Then, the formed laminate is dried, and further, unreacted amine oxalic acid is washed and removed and dried again to produce a composite reverse osmosis membrane. According to the dip coating method, a high performance composite reverse osmosis membrane can be produced with relatively simple equipment and operation. On the other hand, it has the following drawbacks.
- the coating thickness of the aqueous solution coating layer that is, the coating thickness of the aqueous solution.
- the coating thickness depends on the coating speed and the physical properties such as the viscosity, density and surface tension of the aqueous solution. Therefore, it is necessary to prevent overcoating in the dip coating method, and a composite reverse osmosis membrane can usually be produced only at a relatively low speed of about 3 to 6 mZ.
- a method of removing an excess solution with a rubber roller after coating for example, a method of removing an excess solution with a rubber roller after coating (Patent Document 7), A method of removing with a roller (Patent Document 8), a method of wiping off the excess aqueous solution on the back surface, and then drying the surface of the support with two air knives (Patent Document 9) are disclosed. Since it is essentially a dip coating method, the aqueous amine solution penetrates the entire support, and the drawbacks of the dip coating method have not been solved. In addition, a coating method called a film flow method has been proposed as a coating means to replace the dip coating method.
- the excess aqueous solution is removed by natural flow with the support vertical (Patent Document 10). 11).
- the aqueous amine solution can be uniformly applied without depending on the running speed of the support.
- the time until the acid chloride solution tank is immersed in the solution is about 2 minutes.
- an effective coating means that can be changed to the dip coating method has not been found.
- Patent Document 12 a method for producing a composite reverse osmosis membrane that can solve the problem of the dip coating method.
- the production method is called a tandem coating method.
- wet “on” wet coating So-called wet “on” wet coating.
- the thickness accuracy of the porous support as a base material is also required.
- a porous support on a base fabric such as nonwoven fabric or woven fabric A polysulfone porous membrane having a width of about lm formed by a wet film formation method is preferably used.
- the thickness accuracy in the width direction is a force that depends on the thickness accuracy of the base fabric and the polysulfone layer. 5 m. Therefore, even if the accuracy of the device is sufficient, it is extremely difficult to uniformly apply a thin layer of several ⁇ to 10 / ⁇ m, resulting in coating unevenness and application interruption that have a fatal effect on reverse osmosis membrane performance. There is a fear. Therefore, it is practically difficult to apply the tandem coating method to the production of composite reverse osmosis membranes on an industrial scale.
- Patent Document 1 US Pat. No. 3,133,132 Specification
- Patent Document 2 U.S. Pat.No. 3,133,137
- Patent Document 3 US Patent No. 3567632
- Patent Document 4 U.S. Pat.No. 4,277,344
- Patent Document 5 US Pat. No. 5,254,261 specification
- Patent Document 6 US Patent No. 3023300
- Patent Document 7 Patent 2727087 Specification
- Patent Document 8 JP-T 8-509162
- Patent Document 9 Patent No. 2947291 Specification
- Patent Document 10 Patent No. 2510530
- Patent Document 11 Japanese Unexamined Patent Application Publication No. 2002-136849
- Patent Document 12 U.S. Pat.No. 6,132,804
- An object of the present invention is to provide a method for producing a composite reverse osmosis membrane industrially stably and continuously. Details are as follows.
- the present invention provides a method for producing a composite reverse osmosis membrane of stable quality in which a thin film is not formed on the back surface of a porous support.
- the present invention relates to a method for producing a composite reverse osmosis membrane comprising a polyamide-based skin layer and a porous support for supporting the same, and
- Step B for holding for 2 to 15 seconds on the porous support and allowing the aqueous solution a to penetrate into the micropores of the porous support.
- step C an organic solution b containing a polyfunctional acid halide is applied to the surface of the porous support, and the organic solution b and the aqueous solution a are brought into contact with each other for interfacial polymerization to form a polyamide skin layer.
- step D an organic solution b containing a polyfunctional acid halide is applied to the surface of the porous support, and the organic solution b and the aqueous solution a are brought into contact with each other for interfacial polymerization to form a polyamide skin layer.
- the present invention relates to a method for producing a composite reverse osmosis membrane characterized by continuously producing a composite reverse osmosis membrane.
- the aqueous solution coating layer is substantially completely formed before the organic solution b is applied.
- wet 'on' wet coating is the first to coat the entire substrate (support). It is described as a coating method in which another liquid film layer is applied on the coating liquid film layer without breaking the layer. Specifically, as shown in FIG. 1, the aqueous solution coating layer 2 is formed on the porous support 1, and the organic solution coating layer 3 is formed on the aqueous solution coating layer 2 while leaving the aqueous solution coating layer 2 on the surface. In a way is there.
- the production method of the present invention is substantially complete by wiping an aqueous solution coating layer 2 formed by coating an aqueous solution a on a porous support 1 with a removing device 4.
- the aqueous solution a is impregnated in the micropores on the surface of the porous support 1, and there is almost no aqueous solution coating layer 2 that covers the entire surface of the porous support 1! 'It is not an on-wet coating, but is essentially only one layer of the organic solution coating layer 3.
- the coating thickness of the aqueous solution a and the organic solution b can be made uniform in consideration of the thickness accuracy and surface roughness of the porous support. Unlike the disclosed thin layer formation of several m to 10 m, it is possible to stably produce a high-performance composite reverse osmosis membrane with a general mechanical precision device.
- the coating film surface temperature of the organic solution b immediately after coating is 1
- the aqueous solution a is preferably applied using a micro gravure coater or a slot die coater.
- the slot die coater is preferably provided with a temperature control mechanism.
- step C it is preferable to wipe the aqueous solution covering layer using a rubber blade wiper or an air knife.
- step D it is preferable to apply the organic solution b using a slot die coater.
- the slot die coater preferably has a temperature control mechanism.
- the thickness of the aqueous solution coating layer is preferably 10 to 50 m. Further, it is preferable that the coating thickness (coating film thickness) of the organic solution b is 10 to 70 m.
- the present invention also relates to a composite reverse osmosis membrane obtained by the production method.
- the amount of the amine solution and the polyfunctional acid chloride organic solution used can be greatly reduced as compared with the conventional dip coating method. Also composite Since unreacted substances in the reverse osmosis membrane can be reduced, the subsequent washing operation can be simplified. Also, unlike the dip coating method, there is no time-dependent change in the polyfunctional acid chloride concentration in the organic solution and the speed dependence of the coating thickness, so a high-performance composite reverse osmosis membrane must be produced stably and at high speed. Is possible. Furthermore, if the composite reverse osmosis membrane obtained by the production method of the present invention is incorporated into a spiral element, the reliability of the bonded portion is high, so that an extremely high performance spiral element can be produced.
- FIG. 1 is a schematic process diagram showing an example of a wet “on” wet coating method.
- FIG. 2 is a schematic process diagram showing an example of the production method of the present invention.
- FIG. 3 is a schematic process diagram showing another example of the production method of the present invention.
- FIG. 4 is a schematic process diagram showing another example of the production method of the present invention.
- FIG. 5 is a schematic process diagram showing another example of the production method of the present invention.
- FIG. 6 is a schematic view of a slot die coater with a temperature control mechanism.
- FIG. 3 shows the present invention. It is a schematic process drawing which shows the specific example of the manufacturing method of this composite reverse osmosis membrane.
- the aqueous solution a is applied to the entire surface of the porous support by the coating device 5 (such as a slot die coater) to form an aqueous solution coating layer. Is done.
- the aqueous solution coating layer travels on the backing roll 8 together with the porous support, the aqueous solution a is permeated into the micropores of the porous support.
- the aqueous solution coating layer is substantially completely removed (wiping removed) by the removal device 4 (air knife, blade wiper, etc.), and immediately thereafter, the organic solution b is removed by the coating device 6 (slot die coater, etc.).
- An organic solution coating layer (coating film) is formed by coating on the entire surface of the porous support. The interface between the polyfunctional acid halide in the organic solution coating layer, the polyfunctional amine present in an impregnated state in the micropores of the porous support, and the polyfunctional amine adsorbed on the surface of the porous support.
- a polyamide skin layer is formed on the porous support by polymerization or the like.
- a high performance composite reverse osmosis membrane can be produced industrially stably and continuously.
- a composite reverse osmosis membrane may be produced by transporting a laminate comprising a porous support and a polyamide skin layer to a drying furnace and drying the laminate. By heating and drying, a denser skin layer is formed. As a result, the salt blocking property of the composite reverse osmosis membrane is improved and the performance during storage is stabilized.
- FIG. 4 shows a case where the backing rolls 8 are individually installed in the coating apparatuses 5 and 6 to maintain a constant time from application of the aqueous solution a to removal of the aqueous solution coating layer and application of the organic solution b.
- FIG. 5 shows an example in which a micro gravure coater is used as the coating device 5.
- the porous support used in the present invention is not particularly limited as long as it can support the polyamide-based skin layer, but has an asymmetric structure or a uniform structure reinforced by a nonwoven fabric or a woven fabric and has a molecular weight cut-off.
- An ultrafiltration membrane of 20,000 to 100,000 dalton is preferably used.
- the material for forming the porous support include polysulfone, polyethersulfone, polysulfone, polyacrylonitrile, ethylene butyl alcohol copolymer, cellulose acetate, and the like, but mechanical strength and chemical resistance. Polysulfone or polyethersulfone having excellent heat resistance is preferably used.
- the porous support is produced by a non-solvent phase separation method usually referred to as wet film formation. In many cases, for example, it can be industrially produced by a method as disclosed in JP-A-2000-4238.
- the compound having two or more reactive amino groups contained in the aqueous solution a used in the present invention is not particularly limited as long as it is a polyfunctional amine, and is aromatic, aliphatic, or alicyclic Noh-am.
- the polyfunctional amine may be used alone or as a mixture.
- aromatic polyfunctional amines include m-phenylenediamine, p-phenylenediamine, 1, 3, 5 triaminobenzene, 1, 2, 4 triaminobenzene, and 3,5 diamino shoulder. , Perfume acid, 2,4 diaminotoluene, 2,6 diaminotoluene, 2,4 diaminoanol, amidol, and xylylenediamine.
- Examples of the aliphatic polyfunctional amine include ethylenediamine, propylenediamine, and tris (2-aminoethyl) amine.
- Examples of alicyclic polyfunctional amines include 1,3 diaminocyclohexane, 1,2 diaminocyclohexane, 1,4-diaminocyclohexane, piperazine, 2,5 dimethylbiperazine, and 4-amino. And methyl biperazine.
- m-phenylenediamine which is an aromatic polyfunctional amine is particularly preferably used.
- the concentration of the polyfunctional amine in the aqueous solution a is usually about 0.1 to 10% by weight, preferably
- the aqueous solution a containing the polyfunctional amine is, for example, polyvinyl alcohol, in order to facilitate the application to the porous support or to improve the performance of the obtained composite reverse osmosis membrane. It may contain a small amount of a polymer such as polybulurpyrrolidone or polyacrylic acid, or a polyhydric alcohol such as sorbitol or glycerin.
- tetraalkyl ammonium halides and salts of trialkyl ammonium halides and organic acids described in JP-A-2-187135 can be formed into a porous support of an aqueous solution a in order to facilitate film formation. It is preferably used from the viewpoints of improving the absorption of water and promoting the condensation reaction.
- a surfactant such as sodium can also be contained in the aqueous solution a. These surfactants are effective in improving the wettability of the aqueous solution a to the porous support.
- the appropriate concentration is usually about 0.1 to 0.3% by weight, preferably 0.1 to 0.2% by weight, as long as it is not less than the critical micelle concentration.
- sodium hydroxide or trisodium phosphate capable of removing hydrogen halide generated by the interface reaction or as a catalyst is used. It is also beneficial to include a catalyst or the like in the aqueous solution a.
- a compound having a solubility parameter force of 3 ⁇ 4 to 14 (calZcm 3 ) 1/2 described in JP-A-8-224452 can be added to the aqueous solution a.
- ethanol, propanol, isopropyl alcohol and the like are preferably used.
- the viscosity of the aqueous solution a is a force that can be adjusted so that it can be easily applied as described above, and is preferably 1 to 20 mPa's, more preferably 1 to 5 mPa's.
- the application means of the aqueous solution a is not particularly limited as long as it can be applied only on the surface side of the porous support.
- a reverse roll coater, reverse offset gravure coater, micro gravure coater, kiss coater, rod Coating methods such as coater, curtain spray coater, fountain die coater, slot die coater, flexible liquid absorbent sheet disclosed in Japanese Patent Publication No. 61-48995 and Japanese Patent Publication No. 61-48996 Forces to be cited
- a slot die coater or a micro-dala via coater is preferably used because of its quantitativeness and operability. Moreover, it is preferable that these are provided with the temperature control mechanism.
- the die coater has a high quantitative coating property, and it is needless to say that the adjustment of the coating thickness is easy.
- the slot die coater is a pre-weighing type die coater. Even when the clearance between the support surface and the die lip, which is called “a”, is set widely, it has a feature that coating unevenness and liquid breakage are unlikely to occur.
- the gap nobit can be expanded to 3 to 5 times the coating thickness.
- a post-weighing die coater such as the Fountain die coater needs to set the gap noise in the range of 1 to 2 times the coating thickness for uniform coating. Therefore, the slot die coater is particularly preferably used because it has less troubles such as foreign objects and stagnation of the support.
- a micro gravure coater is a kind of reverse kiss coater that incorporates a gravure roll with a diameter of 20 to 50 mm.
- the roll diameter is smaller than that of a conventional gravure roll, so the solution composition changes due to evaporation of the coating liquid. It is preferably used because of its small size and easy roll replacement.
- the coating thickness of the aqueous solution a is not particularly limited because it substantially completely removes the aqueous solution coating layer formed by holding for a predetermined time after coating, but it is uniformly stable on the porous support surface without coating unevenness. In this case, it is preferably 10 to 50 / ⁇ ⁇ , more preferably 20 to 40 / ⁇ ⁇ . When the coating thickness is less than 10 m, it is not preferable because uneven coating or liquid breakage may occur due to the thickness accuracy of the porous support or surface irregularities as described above.
- an aqueous solution coating layer of less than 10 m is not preferable because a “repelling phenomenon” may occur in a short time after coating due to uneven penetration of the liquid film or irregularities on the surface of the porous support.
- the coating thickness exceeds 50 / zm, depending on the concentration of the polyfunctional amine, it becomes a large excess with respect to the amount of amine required for the formation of the polyamide skin layer, and a large amount of waste liquid is used in the subsequent removal process Is not desirable because
- the aqueous solution coating layer is held for a predetermined time and the aqueous solution a is permeated into the porous support surface. Diffuse and adsorb. Thereafter, the excess aqueous coating layer is removed, but the retention time of the aqueous coating layer, that is, the time from application of aqueous solution a to removal of the aqueous coating layer is 0.2 to 15 seconds. There is an extremely short time.
- Composition, viscosity, and porosity of the aqueous solution a Force depending on the pore size of the surface layer of the support is preferably 0.2 to 5 seconds, more preferably 0.2 to 3 seconds.
- the holding time is less than 0.2 seconds, the aqueous solution a is not preferable because it may not uniformly penetrate and diffuse into the micropores on the surface of the porous support.
- the holding time exceeds 15 seconds, the aqueous solution a may penetrate and diffuse into the porous support, and a large amount of unreacted amine may remain.
- the contact time between the support and the aqueous amine solution usually requires 10 seconds to several minutes, and in order to form a polyamide thin film by an interfacial polymerization reaction, the support is porous.
- the aqueous solution coating layer was substantially completely contacted in a very short time. Even if it is removed, a high performance composite reverse osmosis membrane can be obtained.
- the aqueous solution a instantaneously penetrates into the micropores existing on the surface of the porous support by capillary action, and at the same time the polyfunctional amine is adsorbed on the surface of the porous support.
- the polyamide-based skin layer is formed even when the aqueous support coating layer is not substantially present on the surface of the porous support because the polyfunctional amine in the aqueous solution a existing in the impregnated state on the porous support surface is formed. It is thought that it reacts with the polyfunctional acid halide in the organic solution b through the micropores.
- Japanese Patent No. 2727087, JP-A-7-313852 it is considered that the polyfunctional amine adsorbed on the surface of the porous support also reacts.
- the porous support and the aqueous solution coating layer are brought into contact for 0.2 to 15 seconds, and then the aqueous solution coating layer is removed. It is preferably performed immediately before the application.
- the means for removing the aqueous solution coating layer is not particularly limited as long as it can remove the aqueous solution coating layer from the porous support substantially completely.
- rubber blade wipers, air knives, adsorption sponge rolls examples include plastic plate wipers made of polyethylene or polyester, vacuum liquid absorbing rolls, and squeegees made of urethane rubber.
- plastic plate wipers made of polyethylene or polyester, vacuum liquid absorbing rolls, and squeegees made of urethane rubber.
- the material of the rubber blade wiper includes, for example, nitrile rubber, butyl rubber, fluorine rubber, silicone rubber, and urethane rubber. From the viewpoint of wear resistance and chemical resistance, -tolyl rubber or fluorine rubber is preferable. Used for.
- the air knife When an air knife is used, in order to remove the aqueous solution coating layer substantially completely from the surface force of the porous support, the air knife is brought close to a portion where the porous support is supported by a roll. It is necessary to blow air at a speed of 30-150mZ seconds.
- the distance between the air knife and the porous support surface is preferably 1 to 5 mm, more preferably 1 to 2 mm. Inert gas such as nitrogen gas can be blown instead of air.
- substantially completely removing the aqueous solution coating layer means that the surface of the porous support from which the aqueous solution coating layer has been removed is touched with a finger and feels moist, like tissue paper. This means that even when the surface of the porous support is lightly wiped with a new absorbent paper, the aqueous coating layer is removed until the absorbent paper is wet. [0054] Immediately after the removing step C, an organic solution b containing a polyfunctional acid halide is applied to the surface of the porous support.
- the organic solution b is brought into contact with the aqueous solution a present in an impregnated state in the micropores on the surface of the porous support and the aqueous solution a adsorbed on the surface of the porous support, and subjected to interfacial polymerization to form a polyamide.
- a system skin layer is formed.
- the polyfunctional acid halide contained in the organic solution b used in the present invention is not particularly limited, and examples thereof include aromatic, aliphatic, or alicyclic polyfunctional acid halides.
- the polyfunctional acid halides may be used alone or as a mixture.
- aromatic polyfunctional acid halide examples include trimesic acid chloride, terephthalic acid chloride, isophthalic acid chloride, biphenyl dicarboxylic acid chloride, naphthalene dicarboxylic acid rubonic acid dichloride, benzene trisulfonic acid chloride, and benzene disulfonic acid chloride. And chlorosulfobenzenebenzene dicarboxylic acid chloride.
- Examples of the aliphatic polyfunctional acid halide include propanetricarboxylic acid chloride, butanetricarboxylic acid chloride, pentanetricarboxylic acid chloride, glutaryl halide, and adiboyl halide.
- Examples of the alicyclic polyfunctional acid halogenated product include cyclopropane tricarboxylic acid chloride, cyclobutane tetracarboxylic acid chloride, cyclopentane tricarboxylic acid chloride, cyclopentane tetracarboxylic acid chloride, cyclohexane tricarboxylic acid chloride, Examples include tetrahydrofuran tetracarboxylic acid chloride, cyclopentane dicarboxylic acid chloride, cyclobutane dicarboxylic acid chloride, cyclohexane dicarboxylic acid chloride, and tetrahydric oral furanic carboxylic acid chloride.
- trimesic acid chloride is particularly preferably used.
- the content of the polyfunctional acid halide in the organic solution b is not particularly limited.
- It is preferably 5% by weight, more preferably 0.05 to 0.5% by weight.
- sodium hydroxide or trisodium phosphate capable of removing hydrogen halide generated by the interface reaction, or as a catalyst is used. It is also beneficial to include a catalyst or the like in the organic solution b.
- the organic solvent of the organic solution b is preferably a hydrocarbon solvent such as hexane or heptane that is immiscible with water. However, it does not necessarily have to be a single component. Examples of the medium include isoparaffin-based IP solvent (manufactured by Idemitsu Petroleum Co., Ltd.), which is preferable because it can be obtained at a low cost.
- the application means of the organic solution b is not particularly limited, but a slot die coater is the most preferable application means. This is because the interfacial polymerization reaction starts from the moment the organic solution b is applied, so that a slight disturbance of the liquid film also leads to defects in the polyamide-based skin layer, so that a shearing force is not applied to the liquid film as much as possible. Is a necessary force.
- a post-metering type die coater such as a Fountain die coater is not suitable because the gap height must be close to the coating thickness as described above.
- coating means that are difficult to apply shearing force include slide coaters and curtain coaters, but the viscosity of the organic solution b is usually about 0.7 to 2 mPa's, which causes the coating to run out. Not applicable.
- curtain spray coater as another application method. It is difficult to apply to organic solvents due to safety problems.
- the coating thickness (film thickness) of the organic solution b depends on the concentration of the polyfunctional acid halide, the physical properties such as the viscosity and surface tension of the organic solution, and the traveling speed of the porous support. It is preferable that it is -70 m, and more preferably 30-50 ⁇ m. When the coating thickness is less than 10 ⁇ m, there is a risk of uneven coating and film breakage due to the surface roughness and thickness accuracy of the porous support as described above. On the other hand, if the coating thickness exceeds 70 m, dripping may occur.
- the temperature of the aqueous solution a and the organic solution b affects the reaction rate of the interfacial polymerization, the shape of the polyamide-based skin layer and the crosslink density. It is an important control factor in producing a composite reverse osmosis membrane with stable performance.
- the production method of the present invention is more susceptible to the effects of the temperature of the aqueous solution a and the organic solution b than the conventional dip coating method, because the amount is applied in a quantitative amount necessary for the formation of the skin layer and subjected to interfacial polymerization.
- the liquid temperature of the aqueous solution a and the organic solution b at the time of application is a force 10 to 50 ° C. which is necessary to be appropriately adjusted depending on the temperature of the porous support and the room temperature. ⁇ 50 ° C.
- the surface temperature of the coating film immediately after coating the organic solution b on the porous support is a force that varies depending on the type and composition of the raw materials used for the aqueous solution a and the organic solution b.
- the temperature is preferably 50 ° C, more preferably 20 to 45 ° C, and particularly preferably 20 to 40 ° C.
- the temperature is adjusted in advance in a supply tank with a jacket and supplied to the coating apparatus, and heat exchange is performed in the middle of the supply pipe.
- the placement method can be mentioned, but it is particularly preferable to use a slot die coater equipped with a temperature control mechanism.
- the material of the die is usually a metal such as stainless steel, and since heat conduction and heat capacity are large, heat exchange can be performed in a relatively short time, and the temperature can be adjusted with high accuracy. Furthermore, when heating, since heating is performed immediately before coating, the deactivation of the polyfunctional acid halide can be suppressed to a minimum.
- a slot die coater with a temperature control mechanism for example, a slot die coater provided with a flow path for flowing a heat exchange solvent such as water above and below the die as shown in FIG. 6 is preferably used.
- the traveling speed of the porous support cannot be strictly limited because it depends on the coating method, coating conditions, and physical properties of the solution, but it is preferably 10 to 50 mZ, and more preferably 10 to 30 mZ. Minutes. If it is less than 10mZ, liquid dripping may occur when applying the organic solution b with a slot die coater. On the other hand, if it exceeds 50mZ, coating defects may occur due to entrainment of bubbles.
- the application of the organic solution b using a slot die coater can be performed by using a commercially available fluid analysis software (for example, FLOW-3D, manufactured by Flow Science, USA) to simulate a meniscus shape at the tip of the die, or a specialized book on coating technology.
- FLOW-3D Fluid Analysis software
- the stable coating speed can be predicted relatively easily from the analytical formula.
- the organic solution b is applied onto the porous support by a slot die coater, and the organic solution b, the aqueous solution a existing in the micropores on the surface of the porous support, and the porous
- the polyamide-based skin layer is formed by interfacial polymerization by bringing the aqueous solution a adsorbed on the surface of the conductive support into contact.
- the porous support having a polyamide skin layer is conveyed to a drying furnace and dried to obtain a composite reverse osmosis membrane having a more delicate polyamide skin layer.
- the drying temperature is usually 20 to 150 ° C. It is preferably 70 to 130 ° C.
- the drying time is usually 20 seconds to 120 seconds, preferably 30 seconds to 60 seconds. If necessary, the unreacted polyfunctional amine oxalic acid may be washed and re-dried.
- the thickness of the formed polyamide-based skin layer is usually about 0.05 to 2 ⁇ m, and the durability, high, water permeability, and excellent salt blocking properties are also 0.1 to: L preferred to be m.
- the pure water permeation flow rate of this porous support was measured under the pressure of 2 kgfZcm 2 and found to be 15 mVm 2 -day.
- the molecular weight cut-off based on polyethylene glycol of this porous support was 50,000 daltons.
- This porous support was used as the porous support in Examples and Comparative Examples.
- the aqueous solution a-1 was applied immediately, and 2.7 seconds later, the aqueous solution coating layer was substantially completely removed by a rubber blade wiper.
- the organic solution b-1 was applied at a thickness of 50 ⁇ m, and the room temperature atmosphere was allowed to undergo the interfacial polymerization reaction. It was transported approximately 2m under ambient air.
- the composite reverse osmosis membrane was prepared by forming a polyamide-based skin layer on the porous support by transporting it to a drying furnace at 120 ° C. and drying for about 30 seconds.
- the porous support was immersed in an aqueous solution a-1 tank for 2 minutes, the aqueous solution a-1 adhered to the surface of the porous support was removed with a rubber blade wiper. Next, it was immersed in the organic solution b-1 tank for 20 seconds. After that, it was taken out at room temperature and allowed to stand for 1 minute to cause an interfacial polymerization reaction to form a polyamide skin layer, and further dried in a 120 ° C dryer for 3 minutes to produce a composite reverse osmosis membrane did.
- the nonwoven fabric surfaces of the composite reverse osmosis membranes of Example 1 and Comparative Example 1 were bonded to each other with an adhesive used in the manufacturing process of the spiral element, and a sample having a bonded portion of 10 mm width X length 20 mm was obtained.
- the peel adhesive strength was measured with a tensile tester.
- both the coating thickness of the amine solution and the organic solution can be greatly reduced and obtained as compared with the conventional dip coating method.
- the amount of unreacted m-phenylenediamine (MPD) remaining in the composite reverse osmosis membrane was also significantly reduced.
- the composite reverse osmosis membrane obtained by the production method of the present invention showed sufficient adhesive strength.
- the adhesive strength of the composite reverse osmosis membrane of the dip coating method (Comparative Example 1) was extremely low due to amine contamination on the back side of the membrane and adverse effects during formation of the polyamide skin layer.
- a composite reverse osmosis membrane was produced in the same manner as in Example 1 except that the apparatus shown in FIG. 5 was used and the coating means for the aqueous solution a-1 was a microgravure coater.
- the aqueous solution a-2 was immediately applied, and after 0.6 seconds, the aqueous solution coating layer was substantially completely removed by an air knife (speed: lOOmZ minutes).
- the weight per unit area was 153.9 gZm 2 and 154.8 gZm 2 . It was confirmed that the aqueous solution coating layer was substantially completely removed.
- the organic solution b-1 was applied at a thickness of 50 ⁇ m to the slot die coater and transported for about 2 m in a room temperature atmosphere while causing an interfacial polymerization reaction. Thereafter, the composite reverse osmosis membrane was produced by transporting it to a drying furnace at 120 ° C. and drying it for about 30 seconds to form a polyamide-based skin layer on the porous support.
- Example 1 the coating thickness of aqueous solution a-1 was set to 40 m, and the holding time of the aqueous solution coating layer was variously changed by changing the running speed of the support or the coating force of aqueous solution a-1 and the distance to wiping.
- a composite reverse osmosis membrane was prepared in the same manner as in Example 1 except for the above. However, in Comparative Example 2, the aqueous solution coating layer was removed using an air knife instead of the rubber blade wiper.
- Reference Example 1 A composite reverse osmosis membrane was prepared in the same manner as in Example 1 except that the coating thickness of the aqueous solution a-1 was changed to 5 ⁇ m in Example 1. However, when the aqueous solution a-1 was applied and the vehicle traveled about 0.4 m, a repellency phenomenon that was thought to be due to uneven penetration or wetting of the coating film occurred.
- Example 1 Te you, in Example 1, the organic solution b containing trimesic acid chloride 1 wt 0/0 - 2 (organic solvent: IP Solvent)! Except coated with a coating thickness 5 mu m in the same manner as in Example 1 A composite reverse osmosis membrane was prepared. However, the organic solution b-2 was cut off due to uneven thickness of the support and unevenness of the support surface, and the organic solution b-2 could not be applied uniformly.
- organic solvent IP Solvent
- a composite reverse osmosis membrane was prepared in the same manner as in Example 1 except that the aqueous solution a-1 and the organic solution b-1 were applied with temperature control using a slot die coater with a temperature control mechanism shown in FIG.
- the coating thickness of the aqueous solution a-1 was 40 m
- the coating thickness of the organic solution b-1 was 50 / zm.
- the liquid temperature of each solution at the time of application was measured with a non-contact IR surface thermometer as the liquid temperature at the tip of the slot when discharged from each slot die coater.
- the coating film surface temperature immediately after application of organic solution b-1 was measured with a non-contact IR surface thermometer.
- both the aqueous solution and organic solution slot die coaters were passed through heat exchange water at the same temperature.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Manufacturing & Machinery (AREA)
- Nanotechnology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05787916A EP1808220A4 (en) | 2004-10-04 | 2005-09-28 | METHOD FOR PRODUCING A REVERSE OSOMOSIS COMPOUND MEMBRANE |
US11/576,598 US20090050558A1 (en) | 2004-10-04 | 2005-09-28 | Process for producing composite reverse osmosis membrane |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004291130 | 2004-10-04 | ||
JP2004-291130 | 2004-10-04 | ||
JP2005-231065 | 2005-08-09 | ||
JP2005231065A JP4656511B2 (ja) | 2004-10-04 | 2005-08-09 | 複合逆浸透膜の製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006038503A1 true WO2006038503A1 (ja) | 2006-04-13 |
Family
ID=36142581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/017829 WO2006038503A1 (ja) | 2004-10-04 | 2005-09-28 | 複合逆浸透膜の製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090050558A1 (ja) |
EP (1) | EP1808220A4 (ja) |
JP (1) | JP4656511B2 (ja) |
KR (1) | KR100885591B1 (ja) |
WO (1) | WO2006038503A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103648622A (zh) * | 2012-05-24 | 2014-03-19 | Lg化学株式会社 | 制备反渗透膜的方法以及由该方法制备的反渗透膜 |
CN111974223A (zh) * | 2019-05-24 | 2020-11-24 | 山东振富医疗器械有限公司 | 基于聚醚砜微滤膜生产线的可调节式刮刀固定架 |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE527166C2 (sv) * | 2003-08-21 | 2006-01-10 | Kerttu Eriksson | Förfarande och anordning för avfuktning |
JP2006102594A (ja) * | 2004-10-01 | 2006-04-20 | Nitto Denko Corp | 複合半透膜の製造方法 |
JP4656502B2 (ja) * | 2004-10-01 | 2011-03-23 | 日東電工株式会社 | 複合半透膜及びその製造方法 |
JP4656503B2 (ja) * | 2004-10-01 | 2011-03-23 | 日東電工株式会社 | 複合半透膜及びその製造方法 |
JP4936438B2 (ja) * | 2006-10-10 | 2012-05-23 | 日東電工株式会社 | 乾燥複合半透膜の製造方法 |
JP2008093544A (ja) * | 2006-10-10 | 2008-04-24 | Nitto Denko Corp | 複合半透膜及びその製造方法 |
JP2008246419A (ja) * | 2007-03-30 | 2008-10-16 | Nitto Denko Corp | 複合半透膜の製造方法 |
US20140183127A1 (en) * | 2011-04-01 | 2014-07-03 | Toray Industries, Inc. | Composite semipermeable membrane, composite semipermeable membrane element, and method for manufacturing composite semipermeable membrane |
EP2711071A4 (en) * | 2011-05-20 | 2014-11-26 | Lg Chemical Ltd | METHOD FOR PRODUCING A REVERSED OSMOSEMBRANE AND REVERSED OSMOSEMBRANE PRODUCED IN THIS PROCESS |
WO2013014420A1 (en) * | 2011-07-25 | 2013-01-31 | Fujifilm Manufacturing Europe Bv | Composite membranes |
RU2498845C1 (ru) * | 2012-03-12 | 2013-11-20 | Закрытое акционерное общество "РМ Нанотех" | Способ получения композитной полимерной мембраны для обратного осмоса |
RU2492916C1 (ru) * | 2012-03-12 | 2013-09-20 | Закрытое акционерное общество "РМ Нанотех" | Композитная полимерная мембрана для нанофильтрации и способ ее получения |
KR101885255B1 (ko) * | 2012-03-30 | 2018-08-03 | 코오롱인더스트리 주식회사 | 다공성 막 및 그 제조방법 |
WO2013154755A1 (en) | 2012-04-09 | 2013-10-17 | 3M Innovative Properties Company | Thin film composite membrane structures |
EP2902095B1 (en) * | 2012-09-26 | 2020-02-26 | Toray Industries, Inc. | Composite semipermeable membrane |
WO2014081232A1 (ko) | 2012-11-21 | 2014-05-30 | 주식회사 엘지화학 | 내염소성이 우수한 고유량 수처리 분리막 |
US9211507B2 (en) * | 2012-11-21 | 2015-12-15 | Lg Chem, Ltd. | Water-treatment separating membrane of high flux having good chlorine resistance and method of manufacturing the same |
ES2856328T3 (es) | 2012-11-23 | 2021-09-27 | Council Scient Ind Res | Una membrana de ósmosis inversa de compuesto de película delgada modificada y usos de la misma |
JP6305729B2 (ja) | 2013-11-05 | 2018-04-04 | 日東電工株式会社 | 複合半透膜 |
KR101779889B1 (ko) | 2015-04-15 | 2017-09-20 | 한국화학연구원 | 폴리아미드 코팅층을 포함하는 복합 멤브레인 및 이의 제조방법 |
US9731985B2 (en) | 2015-06-03 | 2017-08-15 | Lg Nanoh2O, Inc. | Chemical additives for enhancement of water flux of a membrane |
US9695065B2 (en) | 2015-06-03 | 2017-07-04 | Lg Nanoh2O, Inc. | Combination of chemical additives for enhancement of water flux of a membrane |
US9724651B2 (en) | 2015-07-14 | 2017-08-08 | Lg Nanoh2O, Inc. | Chemical additives for water flux enhancement |
EP3329986A4 (en) * | 2015-07-31 | 2019-04-03 | Toray Industries, Inc. | Separating membrane, separating membrane element, water purifier and method for producing the separation membrane |
US9861940B2 (en) | 2015-08-31 | 2018-01-09 | Lg Baboh2O, Inc. | Additives for salt rejection enhancement of a membrane |
US10155203B2 (en) | 2016-03-03 | 2018-12-18 | Lg Nanoh2O, Inc. | Methods of enhancing water flux of a TFC membrane using oxidizing and reducing agents |
KR102079845B1 (ko) * | 2016-09-30 | 2020-02-20 | 주식회사 엘지화학 | 수처리 분리막의 제조방법, 이를 이용하여 제조된 수처리 분리막, 및 수처리 분리막 제조용 조성물 |
CN106964265B (zh) * | 2017-05-12 | 2023-01-24 | 赵宸 | 聚四氟乙烯过滤膜的加工方法及专用切削成膜系统 |
KR102155930B1 (ko) * | 2017-05-18 | 2020-09-14 | 주식회사 엘지화학 | 수처리 분리막 및 이의 제조방법 |
WO2019168138A1 (ja) | 2018-02-28 | 2019-09-06 | 東レ株式会社 | 複合半透膜および複合半透膜エレメント |
JP7103711B2 (ja) * | 2018-07-27 | 2022-07-20 | エルジー・ケム・リミテッド | 分離膜リーフ、これを含む渦巻型モジュールおよび装置 |
CN109364764A (zh) * | 2018-12-19 | 2019-02-22 | 苏州瑞欧纳米设备开发有限公司 | 反渗透膜或纳滤膜制备工艺中的清洗方法及系统 |
SG11202106064RA (en) * | 2019-01-08 | 2021-07-29 | Univ Nanyang Tech | Fabrication of aquaporin-based biomimetic membrane |
KR102660173B1 (ko) * | 2019-04-30 | 2024-04-23 | 주식회사 엘지화학 | 분리막의 제조방법, 분리막 및 수처리 모듈 |
CN113293542B (zh) * | 2021-04-10 | 2023-05-09 | 重庆海通环保科技有限公司 | 一种用于制作反渗透膜的喷涂装置 |
CN113828174A (zh) * | 2021-10-09 | 2021-12-24 | 苏州苏瑞膜纳米科技有限公司 | 一种双层复合结构反渗透膜及其制备方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0278428A (ja) * | 1988-06-07 | 1990-03-19 | Toray Ind Inc | 複合半透膜およびその製造方法 |
JP2000300974A (ja) * | 1999-04-21 | 2000-10-31 | Petroleum Energy Center | 半透膜とその製造方法およびヘリウム分離用半透膜 |
JP2001038175A (ja) * | 1999-05-27 | 2001-02-13 | Toyobo Co Ltd | 複合半透膜 |
JP2001179061A (ja) * | 1999-12-22 | 2001-07-03 | Toray Ind Inc | 複合半透膜およびその製造方法 |
JP2002355938A (ja) * | 2001-05-30 | 2002-12-10 | Tonen Chem Corp | 複合膜、その製造方法及びそれを用いた電池用セパレータ又はフィルター |
JP2003275652A (ja) * | 2002-03-22 | 2003-09-30 | Fuji Photo Film Co Ltd | 塗布方法及び装置 |
Family Cites Families (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2727087A (en) * | 1952-04-18 | 1955-12-13 | Gen Electric | Armored oil well cable |
US3023300A (en) * | 1959-08-10 | 1962-02-27 | Hackethal Draht & Kabelwerk Ag | Method and apparatus for forming cable sheath |
US3133137A (en) * | 1960-11-29 | 1964-05-12 | Univ California | High flow porous membranes for separating water from saline solutions |
NL271831A (ja) * | 1960-11-29 | |||
US3567632A (en) * | 1968-09-04 | 1971-03-02 | Du Pont | Permselective,aromatic,nitrogen-containing polymeric membranes |
US3744642A (en) * | 1970-12-30 | 1973-07-10 | Westinghouse Electric Corp | Interface condensation desalination membranes |
US4005012A (en) * | 1975-09-22 | 1977-01-25 | The United States Of America As Represented By The Secretary Of The Interior | Semipermeable membranes and the method for the preparation thereof |
US4277344A (en) * | 1979-02-22 | 1981-07-07 | Filmtec Corporation | Interfacially synthesized reverse osmosis membrane |
US4520044A (en) * | 1984-07-30 | 1985-05-28 | E. I. Du Pont De Nemours And Company | Production of composite membranes |
US4529646A (en) * | 1984-07-30 | 1985-07-16 | E. I. Du Pont De Nemours And Company | Production of composite membranes |
US4761234A (en) * | 1985-08-05 | 1988-08-02 | Toray Industries, Inc. | Interfacially synthesized reverse osmosis membrane |
US4830885A (en) * | 1987-06-08 | 1989-05-16 | Allied-Signal Inc. | Chlorine-resistant semipermeable membranes |
US4769148A (en) * | 1987-11-18 | 1988-09-06 | The Dow Chemical Company | Novel polyamide reverse osmosis membranes |
US5178335A (en) * | 1988-04-27 | 1993-01-12 | Theo Mertens | Mill |
US4872984A (en) * | 1988-09-28 | 1989-10-10 | Hydranautics Corporation | Interfacially synthesized reverse osmosis membrane containing an amine salt and processes for preparing the same |
US4948507A (en) * | 1988-09-28 | 1990-08-14 | Hydranautics Corporation | Interfacially synthesized reverse osmosis membrane containing an amine salt and processes for preparing the same |
US4938872A (en) * | 1989-06-07 | 1990-07-03 | E. I. Du Pont De Nemours And Company | Treatment for reverse osmosis membranes |
US4950404A (en) * | 1989-08-30 | 1990-08-21 | Allied-Signal Inc. | High flux semipermeable membranes |
US4964998A (en) * | 1989-12-13 | 1990-10-23 | Filmtec Corporation | Use of treated composite polyamide membranes to separate concentrated solute |
US4983291A (en) * | 1989-12-14 | 1991-01-08 | Allied-Signal Inc. | Dry high flux semipermeable membranes |
NL9001274A (nl) * | 1990-06-06 | 1992-01-02 | X Flow Bv | Semi-permeabel composietmembraan, alsmede werkwijze voor het vervaardigen ervan. |
US5152901A (en) * | 1990-09-14 | 1992-10-06 | Ionics, Incorporated | Polyamine-polyamide composite nanofiltration membrane for water softening |
US5254261A (en) * | 1991-08-12 | 1993-10-19 | Hydranautics | Interfacially synthesized reverse osmosis membranes and processes for preparing the same |
US5234598A (en) * | 1992-05-13 | 1993-08-10 | Allied-Signal Inc. | Thin-film composite membrane |
TW336899B (en) * | 1994-01-26 | 1998-07-21 | Mitsubishi Rayon Co | Microporous membrane made of non-crystalline polymers and method of producing the same |
US5783079A (en) * | 1994-08-29 | 1998-07-21 | Toyo Boseki Kabushiki Kaisha | Composite hollow fiber membrane and process for its production |
US5693227A (en) * | 1994-11-17 | 1997-12-02 | Ionics, Incorporated | Catalyst mediated method of interfacial polymerization on a microporous support, and polymers, fibers, films and membranes made by such method |
US5582725A (en) * | 1995-05-19 | 1996-12-10 | Bend Research, Inc. | Chlorine-resistant composite membranes with high organic rejection |
US5547701A (en) * | 1995-06-07 | 1996-08-20 | Kimberly-Clark Corporation | Method of forming a paper applicator containing a water insoluble coating |
US6177011B1 (en) * | 1996-03-18 | 2001-01-23 | Nitto Denko Corporation | Composite reverse osmosis membrane having a separation layer with polyvinyl alcohol coating and method of reverse osmotic treatment of water using the same |
JP3681214B2 (ja) * | 1996-03-21 | 2005-08-10 | 日東電工株式会社 | 高透過性複合逆浸透膜 |
US6413425B1 (en) * | 1997-04-10 | 2002-07-02 | Nitto Denko Corporation | Reverse osmosis composite membrane and reverse osmosis treatment method for water using the same |
US6536605B2 (en) * | 1997-06-06 | 2003-03-25 | Koch Membrane Systems, Inc. | High performance composite membrane |
US6132804A (en) * | 1997-06-06 | 2000-10-17 | Koch Membrane Systems, Inc. | High performance composite membrane |
JP3577917B2 (ja) * | 1997-10-31 | 2004-10-20 | 株式会社日立製作所 | 自動分析装置 |
US6015495A (en) * | 1998-02-18 | 2000-01-18 | Saehan Industries Incorporation | Composite polyamide reverse osmosis membrane and method of producing the same |
US6162358A (en) * | 1998-06-05 | 2000-12-19 | Nl Chemicals Technologies, Inc. | High flux reverse osmosis membrane |
US6337018B1 (en) * | 2000-04-17 | 2002-01-08 | The Dow Chemical Company | Composite membrane and method for making the same |
EP1283068A1 (en) * | 2001-07-30 | 2003-02-12 | Saehan Industries, Inc. | Reverse osmosis membrane having excellent anti-fouling property and method for manufacturing the same |
JP4500002B2 (ja) * | 2003-05-06 | 2010-07-14 | 日東電工株式会社 | 複合半透膜及びその製造方法 |
JP4656503B2 (ja) * | 2004-10-01 | 2011-03-23 | 日東電工株式会社 | 複合半透膜及びその製造方法 |
JP4656502B2 (ja) * | 2004-10-01 | 2011-03-23 | 日東電工株式会社 | 複合半透膜及びその製造方法 |
JP2006102594A (ja) * | 2004-10-01 | 2006-04-20 | Nitto Denko Corp | 複合半透膜の製造方法 |
EP1848473B1 (en) * | 2005-02-07 | 2013-05-22 | Hanuman LLC | Plasma concentrator device |
US7727434B2 (en) * | 2005-08-16 | 2010-06-01 | General Electric Company | Membranes and methods of treating membranes |
JP2008093544A (ja) * | 2006-10-10 | 2008-04-24 | Nitto Denko Corp | 複合半透膜及びその製造方法 |
JP4936438B2 (ja) * | 2006-10-10 | 2012-05-23 | 日東電工株式会社 | 乾燥複合半透膜の製造方法 |
JP2008246419A (ja) * | 2007-03-30 | 2008-10-16 | Nitto Denko Corp | 複合半透膜の製造方法 |
-
2005
- 2005-08-09 JP JP2005231065A patent/JP4656511B2/ja active Active
- 2005-09-28 WO PCT/JP2005/017829 patent/WO2006038503A1/ja active Application Filing
- 2005-09-28 EP EP05787916A patent/EP1808220A4/en not_active Withdrawn
- 2005-09-28 KR KR1020077010144A patent/KR100885591B1/ko active IP Right Grant
- 2005-09-28 US US11/576,598 patent/US20090050558A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0278428A (ja) * | 1988-06-07 | 1990-03-19 | Toray Ind Inc | 複合半透膜およびその製造方法 |
JP2000300974A (ja) * | 1999-04-21 | 2000-10-31 | Petroleum Energy Center | 半透膜とその製造方法およびヘリウム分離用半透膜 |
JP2001038175A (ja) * | 1999-05-27 | 2001-02-13 | Toyobo Co Ltd | 複合半透膜 |
JP2001179061A (ja) * | 1999-12-22 | 2001-07-03 | Toray Ind Inc | 複合半透膜およびその製造方法 |
JP2002355938A (ja) * | 2001-05-30 | 2002-12-10 | Tonen Chem Corp | 複合膜、その製造方法及びそれを用いた電池用セパレータ又はフィルター |
JP2003275652A (ja) * | 2002-03-22 | 2003-09-30 | Fuji Photo Film Co Ltd | 塗布方法及び装置 |
Non-Patent Citations (2)
Title |
---|
COATING, 2002, pages 405 |
See also references of EP1808220A4 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103648622A (zh) * | 2012-05-24 | 2014-03-19 | Lg化学株式会社 | 制备反渗透膜的方法以及由该方法制备的反渗透膜 |
CN103648622B (zh) * | 2012-05-24 | 2016-05-11 | Lg化学株式会社 | 制备反渗透膜的方法以及由该方法制备的反渗透膜 |
CN111974223A (zh) * | 2019-05-24 | 2020-11-24 | 山东振富医疗器械有限公司 | 基于聚醚砜微滤膜生产线的可调节式刮刀固定架 |
Also Published As
Publication number | Publication date |
---|---|
US20090050558A1 (en) | 2009-02-26 |
EP1808220A4 (en) | 2008-05-21 |
KR20070060149A (ko) | 2007-06-12 |
EP1808220A1 (en) | 2007-07-18 |
KR100885591B1 (ko) | 2009-02-24 |
JP4656511B2 (ja) | 2011-03-23 |
JP2006130497A (ja) | 2006-05-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4656511B2 (ja) | 複合逆浸透膜の製造方法 | |
JP6573249B2 (ja) | Tfcメンブレンを介した水フラックスを改善させるための方法 | |
JP4656502B2 (ja) | 複合半透膜及びその製造方法 | |
EP2842621B1 (en) | Method for preparing polyamide-based reverse osmosis membrane | |
CN100588451C (zh) | 复合反渗透膜的制造方法 | |
JP4656503B2 (ja) | 複合半透膜及びその製造方法 | |
EP1806174B1 (en) | Process for producing semipermeable composite membrane | |
JP2008093544A (ja) | 複合半透膜及びその製造方法 | |
Badalov et al. | Ink-jet printing assisted fabrication of thin film composite membranes | |
JP2016518982A (ja) | 塩除去率及び透過流量特性に優れたポリアミド系水処理分離膜及びその製造方法 | |
KR101114668B1 (ko) | 폴리아마이드 역삼투 분리막의 제조방법 및 그에 의해 제조된 폴리아마이드 역삼투 분리막 | |
US20130292325A1 (en) | Method for preparing reverse osmosis membrane, and reverse osmosis membrane prepared thereby | |
CN113457459B (zh) | 一种聚酰胺功能复合膜的连续制备方法及装置 | |
JP6419828B2 (ja) | 高性能ポリアミド系乾式水処理分離膜及びその製造方法 | |
JP2008246419A (ja) | 複合半透膜の製造方法 | |
KR20130076498A (ko) | 초친수층을 포함하는 역삼투막 및 그 제조방법 | |
KR20110072156A (ko) | 폴리아마이드 역삼투 분리막의 제조방법 | |
JP2000042385A (ja) | シート状分離膜の製造法 | |
JP6400885B2 (ja) | 複合半透膜の製造方法 | |
KR101653414B1 (ko) | 내오염성이 우수한 폴리아마이드계 역삼투 분리막의 제조 방법 | |
KR102280869B1 (ko) | 수처리 분리막의 제조 방법 및 이에 의하여 제조된 수처리 분리막 | |
KR20030022915A (ko) | 폴리아마이드 복합소재 역삼투 분리막 제조방법 | |
KR20190071188A (ko) | 수처리 분리막의 제조 방법 및 이에 의하여 제조된 수처리 분리막 | |
KR20160055341A (ko) | 역삼투막의 제조방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KM KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 200580033707.1 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005787916 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020077010144 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 2005787916 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11576598 Country of ref document: US |