CN104069749A - Hyperbranched polymer polyamide composite reverse osmosis membrane and preparation method thereof - Google Patents
Hyperbranched polymer polyamide composite reverse osmosis membrane and preparation method thereof Download PDFInfo
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- CN104069749A CN104069749A CN201410346923.2A CN201410346923A CN104069749A CN 104069749 A CN104069749 A CN 104069749A CN 201410346923 A CN201410346923 A CN 201410346923A CN 104069749 A CN104069749 A CN 104069749A
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- solution
- mass fraction
- reverse osmosis
- osmosis membrane
- dissaving polymer
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- 239000012528 membrane Substances 0.000 title claims abstract description 76
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 62
- 229920000587 hyperbranched polymer Polymers 0.000 title claims abstract description 48
- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 239000004952 Polyamide Substances 0.000 title claims abstract description 34
- 229920002647 polyamide Polymers 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 34
- 239000000243 solution Substances 0.000 claims abstract description 128
- 229920000768 polyamine Polymers 0.000 claims abstract description 33
- -1 aromatic acyl chloride Chemical class 0.000 claims abstract description 24
- 238000012695 Interfacial polymerization Methods 0.000 claims abstract description 10
- 229920000642 polymer Polymers 0.000 claims description 49
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 47
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 44
- 125000003368 amide group Chemical group 0.000 claims description 42
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 claims description 34
- 229940018564 m-phenylenediamine Drugs 0.000 claims description 34
- 239000007864 aqueous solution Substances 0.000 claims description 31
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 25
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 22
- 235000014655 lactic acid Nutrition 0.000 claims description 22
- 239000004310 lactic acid Substances 0.000 claims description 22
- 239000004332 silver Substances 0.000 claims description 22
- 229910052709 silver Inorganic materials 0.000 claims description 22
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 16
- 239000004760 aramid Substances 0.000 claims description 13
- 229920003235 aromatic polyamide Polymers 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 9
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- 238000010612 desalination reaction Methods 0.000 claims description 9
- 239000004094 surface-active agent Substances 0.000 claims description 8
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims description 6
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 claims description 6
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 4
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 4
- 238000003618 dip coating Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims 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 claims description 3
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 claims description 3
- CDOUZKKFHVEKRI-UHFFFAOYSA-N 3-bromo-n-[(prop-2-enoylamino)methyl]propanamide Chemical compound BrCCC(=O)NCNC(=O)C=C CDOUZKKFHVEKRI-UHFFFAOYSA-N 0.000 claims description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 3
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 3
- FYXKZNLBZKRYSS-UHFFFAOYSA-N benzene-1,2-dicarbonyl chloride Chemical compound ClC(=O)C1=CC=CC=C1C(Cl)=O FYXKZNLBZKRYSS-UHFFFAOYSA-N 0.000 claims description 3
- FDQSRULYDNDXQB-UHFFFAOYSA-N benzene-1,3-dicarbonyl chloride Chemical compound ClC(=O)C1=CC=CC(C(Cl)=O)=C1 FDQSRULYDNDXQB-UHFFFAOYSA-N 0.000 claims description 3
- QVYARBLCAHCSFJ-UHFFFAOYSA-N butane-1,1-diamine Chemical compound CCCC(N)N QVYARBLCAHCSFJ-UHFFFAOYSA-N 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 235000015165 citric acid Nutrition 0.000 claims description 3
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 claims description 3
- 235000019329 dioctyl sodium sulphosuccinate Nutrition 0.000 claims description 3
- MOTZDAYCYVMXPC-UHFFFAOYSA-N dodecyl hydrogen sulfate Chemical compound CCCCCCCCCCCCOS(O)(=O)=O MOTZDAYCYVMXPC-UHFFFAOYSA-N 0.000 claims description 3
- 229940043264 dodecyl sulfate Drugs 0.000 claims description 3
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 3
- 239000011976 maleic acid Substances 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- KJOMYNHMBRNCNY-UHFFFAOYSA-N pentane-1,1-diamine Chemical compound CCCCC(N)N KJOMYNHMBRNCNY-UHFFFAOYSA-N 0.000 claims description 3
- GGHDAUPFEBTORZ-UHFFFAOYSA-N propane-1,1-diamine Chemical compound CCC(N)N GGHDAUPFEBTORZ-UHFFFAOYSA-N 0.000 claims description 3
- OABYVIYXWMZFFJ-ZUHYDKSRSA-M sodium glycocholate Chemical compound [Na+].C([C@H]1C[C@H]2O)[C@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@@H](CCC(=O)NCC([O-])=O)C)[C@@]2(C)[C@@H](O)C1 OABYVIYXWMZFFJ-ZUHYDKSRSA-M 0.000 claims description 3
- 229940079827 sodium hydrogen sulfite Drugs 0.000 claims description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 3
- RJWLLQWLBMJCFD-UHFFFAOYSA-N 4-methylpiperazin-1-amine Chemical compound CN1CCN(N)CC1 RJWLLQWLBMJCFD-UHFFFAOYSA-N 0.000 claims description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 2
- 239000004695 Polyether sulfone Substances 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 235000011187 glycerol Nutrition 0.000 claims description 2
- 238000001471 micro-filtration Methods 0.000 claims description 2
- 229920002492 poly(sulfone) Polymers 0.000 claims description 2
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 2
- 229920006393 polyether sulfone Polymers 0.000 claims description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- 230000004907 flux Effects 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 150000001412 amines Chemical class 0.000 abstract 1
- 239000011259 mixed solution Substances 0.000 abstract 1
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Chinese gallotannin Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 description 15
- 210000004379 membrane Anatomy 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 150000003839 salts Chemical class 0.000 description 8
- 238000012360 testing method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000523 sample Substances 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000004288 Sodium dehydroacetate Substances 0.000 description 1
- HGWOWDFNMKCVLG-UHFFFAOYSA-N [O--].[O--].[Ti+4].[Ti+4] Chemical compound [O--].[O--].[Ti+4].[Ti+4] HGWOWDFNMKCVLG-UHFFFAOYSA-N 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 210000002469 basement membrane Anatomy 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- GHAIYFTVRRTBNG-UHFFFAOYSA-N piperazin-1-ylmethanamine Chemical compound NCN1CCNCC1 GHAIYFTVRRTBNG-UHFFFAOYSA-N 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229940079839 sodium dehydroacetate Drugs 0.000 description 1
- 235000019259 sodium dehydroacetate Nutrition 0.000 description 1
- DSOWAKKSGYUMTF-GZOLSCHFSA-M sodium;(1e)-1-(6-methyl-2,4-dioxopyran-3-ylidene)ethanolate Chemical compound [Na+].C\C([O-])=C1/C(=O)OC(C)=CC1=O DSOWAKKSGYUMTF-GZOLSCHFSA-M 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
Abstract
Description
Classification | Flux (GFD) | Salt rejection rate (%) |
Embodiment 1 | 30.5 | 97.6 |
Embodiment 2 | 34.8 | 97.4 |
Embodiment 3 | 39.4 | 96.8 |
Embodiment 4 | 42.3 | 95.3 |
Embodiment 5 | 47.4 | 94.0 |
Embodiment 6 | 28.3 | 97.2 |
Comparative example 1 | 20.1 | 97.4 |
Embodiment 7 | 36 | 96.2 |
Embodiment 8 | 37.2 | 95.3 |
Embodiment 9 | 36.2 | 95.8 |
Comparative example 2 | 24.8 | 95.6 |
Embodiment 10 | 30.4 | 96.8 |
Embodiment 11 | 27.8 | 97.1 |
Claims (10)
Priority Applications (1)
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CN201410346923.2A CN104069749B (en) | 2014-07-21 | 2014-07-21 | A kind of dissaving polymer polyamide composite reverse osmosis membrane and preparation method thereof |
Applications Claiming Priority (1)
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CN201410346923.2A CN104069749B (en) | 2014-07-21 | 2014-07-21 | A kind of dissaving polymer polyamide composite reverse osmosis membrane and preparation method thereof |
Publications (2)
Publication Number | Publication Date |
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CN104069749A true CN104069749A (en) | 2014-10-01 |
CN104069749B CN104069749B (en) | 2016-06-22 |
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CN201410346923.2A Active CN104069749B (en) | 2014-07-21 | 2014-07-21 | A kind of dissaving polymer polyamide composite reverse osmosis membrane and preparation method thereof |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104923086A (en) * | 2015-06-09 | 2015-09-23 | 国家海洋局天津海水淡化与综合利用研究所 | Semi-aromatic polyamide compound reverse osmosis membrane and preparation method thereof |
CN106474945A (en) * | 2015-08-28 | 2017-03-08 | 中国石油化工股份有限公司 | A kind of antibacterial polyamide polymeric membrane and its preparation method and application |
CN110141982A (en) * | 2019-04-26 | 2019-08-20 | 浙江工业大学 | A kind of high throughput equipment with high desalinization mixed-matrix reverse osmosis membrane and the preparation method and application thereof |
CN110975619A (en) * | 2019-12-16 | 2020-04-10 | 恩泰环保科技(常州)有限公司 | Novel reverse osmosis membrane rinsing system and rinsing method thereof |
CN111001317A (en) * | 2019-12-05 | 2020-04-14 | 浙江工业大学 | Novel high-flux high-selectivity composite nanofiltration membrane and preparation method thereof |
CN114749038A (en) * | 2021-01-11 | 2022-07-15 | 中化(宁波)润沃膜科技有限公司 | High-flux reverse osmosis composite membrane and preparation method thereof |
WO2023092781A1 (en) * | 2021-11-25 | 2023-06-01 | 沃顿科技股份有限公司 | Preparation method for reverse osmosis membrane, and reverse osmosis membrane prepared thereby |
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JPH1066845A (en) * | 1996-08-26 | 1998-03-10 | Nitto Denko Corp | Reverse osmosis composite membrane |
KR100716210B1 (en) * | 2005-09-20 | 2007-05-10 | 웅진코웨이주식회사 | Preparation method of polyamide reverse osmosis composite membrane and polyamide reverse osmosis composite membrane prepared therefrom |
CN102580579A (en) * | 2012-03-12 | 2012-07-18 | 邓子华 | Inorganic pollution resistance antibacterial reverse osmosis membrane and preparation method thereof |
CN102698620A (en) * | 2012-06-12 | 2012-10-03 | 浙江大学 | Method for preparing reverse osmosis composite membrane by taking hyperbranched polymer as monomer |
CN103071404A (en) * | 2013-01-28 | 2013-05-01 | 中国科学院化学研究所 | Composite reverse osmosis membrane and preparation method thereof |
-
2014
- 2014-07-21 CN CN201410346923.2A patent/CN104069749B/en active Active
Patent Citations (5)
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JPH1066845A (en) * | 1996-08-26 | 1998-03-10 | Nitto Denko Corp | Reverse osmosis composite membrane |
KR100716210B1 (en) * | 2005-09-20 | 2007-05-10 | 웅진코웨이주식회사 | Preparation method of polyamide reverse osmosis composite membrane and polyamide reverse osmosis composite membrane prepared therefrom |
CN102580579A (en) * | 2012-03-12 | 2012-07-18 | 邓子华 | Inorganic pollution resistance antibacterial reverse osmosis membrane and preparation method thereof |
CN102698620A (en) * | 2012-06-12 | 2012-10-03 | 浙江大学 | Method for preparing reverse osmosis composite membrane by taking hyperbranched polymer as monomer |
CN103071404A (en) * | 2013-01-28 | 2013-05-01 | 中国科学院化学研究所 | Composite reverse osmosis membrane and preparation method thereof |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104923086A (en) * | 2015-06-09 | 2015-09-23 | 国家海洋局天津海水淡化与综合利用研究所 | Semi-aromatic polyamide compound reverse osmosis membrane and preparation method thereof |
CN106474945A (en) * | 2015-08-28 | 2017-03-08 | 中国石油化工股份有限公司 | A kind of antibacterial polyamide polymeric membrane and its preparation method and application |
CN110141982A (en) * | 2019-04-26 | 2019-08-20 | 浙江工业大学 | A kind of high throughput equipment with high desalinization mixed-matrix reverse osmosis membrane and the preparation method and application thereof |
CN110141982B (en) * | 2019-04-26 | 2021-08-24 | 浙江工业大学 | High-flux high-desalination-rate mixed matrix reverse osmosis membrane and preparation method and application thereof |
CN111001317A (en) * | 2019-12-05 | 2020-04-14 | 浙江工业大学 | Novel high-flux high-selectivity composite nanofiltration membrane and preparation method thereof |
CN111001317B (en) * | 2019-12-05 | 2022-02-11 | 浙江工业大学 | High-flux high-selectivity composite nanofiltration membrane and preparation method thereof |
CN110975619A (en) * | 2019-12-16 | 2020-04-10 | 恩泰环保科技(常州)有限公司 | Novel reverse osmosis membrane rinsing system and rinsing method thereof |
CN110975619B (en) * | 2019-12-16 | 2022-02-11 | 恩泰环保科技(常州)有限公司 | Reverse osmosis membrane rinsing system and rinsing method thereof |
CN114749038A (en) * | 2021-01-11 | 2022-07-15 | 中化(宁波)润沃膜科技有限公司 | High-flux reverse osmosis composite membrane and preparation method thereof |
WO2023092781A1 (en) * | 2021-11-25 | 2023-06-01 | 沃顿科技股份有限公司 | Preparation method for reverse osmosis membrane, and reverse osmosis membrane prepared thereby |
Also Published As
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Inventor after: Wang Wei Inventor after: Yu Wanli Inventor after: Cai Xiangyu Inventor after: Wang Shuang Inventor after: Zhang Yingying Inventor after: Wang Xiaoyan Inventor after: Wei Guoqiang Inventor before: Yu Wanli Inventor before: Cai Xiangyu Inventor before: Wang Shuang Inventor before: Zhang Yingying Inventor before: Wang Xiaoyan Inventor before: Wei Guoqiang |
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Free format text: CORRECT: INVENTOR; FROM: YU WANLI CAI XIANGYU WANG SHUANG ZHANG YINGYING WANG XIAOYAN WEI GUOQIANG TO: WANG WEI YU WANLI CAI XIANGYU WANG SHUANG ZHANG YINGYING WANG XIAOYAN WEI GUOQIANG |
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Inventor after: Cai Xiangyu Inventor after: Wang Shuang Inventor after: Wang Wei Inventor after: Zhang Yingying Inventor after: Wang Xiaoyan Inventor after: Wei Guoqiang Inventor before: Wang Wei Inventor before: Yu Wanli Inventor before: Cai Xiangyu Inventor before: Wang Shuang Inventor before: Zhang Yingying Inventor before: Wang Xiaoyan Inventor before: Wei Guoqiang |
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Denomination of invention: Hyperbranched polymer polyamide composite reverse osmosis membrane and preparation method thereof Effective date of registration: 20161206 Granted publication date: 20160622 Pledgee: Commercial Bank of China Limited by Share Ltd. Dongying Kenli branch Pledgor: SHANDONG JOZZON MEMBRANE TECHNOLOGY CO.,LTD. Registration number: 2016990001064 |
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Date of cancellation: 20171211 Granted publication date: 20160622 Pledgee: Commercial Bank of China Limited by Share Ltd. Dongying Kenli branch Pledgor: SHANDONG JOZZON MEMBRANE TECHNOLOGY CO.,LTD. Registration number: 2016990001064 |
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Denomination of invention: Hyperbranched polymer polyamide composite reverse osmosis membrane and preparation method thereof Effective date of registration: 20171211 Granted publication date: 20160622 Pledgee: Commercial Bank of China Limited by Share Ltd. Dongying Kenli branch Pledgor: SHANDONG JOZZON MEMBRANE TECHNOLOGY CO.,LTD. Registration number: 2017990001137 |
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Date of cancellation: 20230625 Granted publication date: 20160622 Pledgee: Commercial Bank of China Limited by Share Ltd. Dongying Kenli branch Pledgor: SHANDONG JOZZON MEMBRANE TECHNOLOGY CO.,LTD. Registration number: 2017990001137 |
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Effective date of registration: 20230707 Address after: 100080 room 909, No.9, North Fourth Ring Road West, Haidian District, Beijing Patentee after: BEIJING JIUZHANG ENVIRONMENTAL ENGINEERING Co.,Ltd. Address before: 257500 No. 56, Shengxing Road, Kenli Economic Development Zone, Dongying City, Shandong Province Patentee before: SHANDONG JOZZON MEMBRANE TECHNOLOGY CO.,LTD. |