Title:
METHOD FOR PREPARING NANOFILTRATION MEMBRANE AND NANOFILTRATION MEMBRANE PREPARED THEREFROM
Document Type and Number:
WIPO Patent Application WO/2021/128886
Kind Code:
A1
Abstract:
A method for preparing a nanofiltration membrane and a nanofiltration membrane prepared therefrom. The method for preparing the nanofiltration membrane comprises the following steps: dissolving a polymer in a solvent to prepare a polymer solution, and solidifying the polymer solution on a support material to form a base membrane; immersing the base membrane in an aqueous solution comprising any one or more of dendritic polyamidoamine PAMAM, an aliphatic nitrogen-containing heterocyclic compound or aromatic amine compound-terminated poly(alkylene glycol); then immersing the base membrane in an organic phase solution comprising an acid chloride compound; and post-processing and drying to obtain the nanofiltration membrane.
Inventors:
LIU SHIZHONG (CN)
LIANG SONGMIAO (CN)
XU GUOYANG (CN)
SONG PENG (CN)
JIN YAN (CN)
WU ZONGCE (CN)
LIANG SONGMIAO (CN)
XU GUOYANG (CN)
SONG PENG (CN)
JIN YAN (CN)
WU ZONGCE (CN)
Application Number:
PCT/CN2020/110219
Publication Date:
July 01, 2021
Filing Date:
August 20, 2020
Export Citation:
Assignee:
VONTRON MEMBRANE TECH CO LTD (CN)
International Classes:
B01D67/00; B01D61/02; B01D69/02; C02F1/44; C02F101/30
Foreign References:
| CN108355497A | 2018-08-03 | |||
| CN109621733A | 2019-04-16 |
Other References:
GOL RAVINDRA M., ANUPAM BERA, SEMIRE BANJO, BISHWAJIT GANGULY, SURESH K. JEWRAJKA: "Effect of amine spacer of PEG on the properties, performance and antifouling behavior of poly(piperazineamide) thin film composite nanofiltration membranes prepared by in situ PEGylation approach", JOURNAL OF MEMBRANE SCIENCE, vol. 472, 27 August 2014 (2014-08-27), pages 154 - 166, XP055823686, DOI: 10.1016/j.memsci.2014.08.015
GOL RAVINDRA M., SURESH K. JEWRAJKA: "Facile in situ PEGylation of polyamide thin film composite membranes for improving fouling resistance", JOURNAL OF MEMBRANE SCIENCE, ELSEVIER BV, NL, vol. 455, 3 January 2014 (2014-01-03), NL, pages 271 - 282, XP055823691, ISSN: 0376-7388, DOI: 10.1016/j.memsci.2013.12.058
GOL RAVINDRA M., SURESH K. JEWRAJKA: "Facile in situ PEGylation of polyamide thin film composite membranes for improving fouling resistance", JOURNAL OF MEMBRANE SCIENCE, ELSEVIER BV, NL, vol. 455, 3 January 2014 (2014-01-03), NL, pages 271 - 282, XP055823691, ISSN: 0376-7388, DOI: 10.1016/j.memsci.2013.12.058
Attorney, Agent or Firm:
LINDA LIU & PARTNERS (CN)
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