METHOD FOR PREPARING SOLVENT-RESISTANT REVERSE OSMOSIS COMPOSITE MEMBRANE

WIPO Patent Application WO/2022/032730

A1

A method for preparing a solvent-resistant reverse osmosis composite membrane. A photocatalytic modification technology is used. An inorganic photocatalytic nanomaterial is introduced into a polysulfone base membrane and a polyamide ultra-thin composite layer in a composite membrane, and free radical groups are generated by means of ultraviolet irradiation or electron beam irradiation to improve the cross-linking degree in each layer and between interface layers of the composite membrane, such that the composite membrane exhibits a better solvent resistance than a pure polyamide composite membrane, and the oxidation resistance and the high-temperature resistance are also improved.

JPH06184303	AROMATIC COPOLYAMIDE, PROCESS FOR ITS PREPARATION AND SHAPED ARTICLE MADE THEREFROM
JP2018047406	BLOCKING RATE IMPROVER OF REVERSE OSMOSIS MEMBRANE, AND BLOCKING RATE IMPROVEMENT METHOD
JPH06182166	COMPOSITE REVERSE OSMOSIS MEMBRANE AND MANUFACTURE THEREOF

WU SHAOYU (CN)
ZHANG JIANFENG (CN)
XU YUANYUAN (CN)
LIU XING (CN)

PCT/CN2020/111593

February 17, 2022

August 27, 2020

Click for automatic bibliography generation  

NANJING AQUA WORLD INST OF SEAWATER DESALINATION CO LTD (CN)
NANJING AQUACUP TECH CO LTD (CN)
NANJING SHUILIAN TIANXIA NEW MAT DEVELOPMENT CO LTD (CN)
ANHUI ACT MEMBRANE TECH CO LTD (CN)
ANHUI ACT MEMBRANE TECH CO LTD (CN)

B01D71/56; B01D67/00; B01D69/02; B01D69/12; B01D71/02; B01D71/68

CN102089068A	2011-06-08
CN1856533A	2006-11-01
CN102743984A	2012-10-24
CN102179191A	2011-09-14
CN106492637A	2017-03-15
CN110947308A	2020-04-03
CN105749762A	2016-07-13
CN107418288A	2017-12-01
JP2010201303A	2010-09-16

NANJING ZHONGLV INTELLECTUAL PROPERTY AGENCY FRIM (GENERAL PARTNERSHIP) (CN)

View/Download PDF      PDF Help

Previous Patent: MOBILE TERMINAL HAVING BUILT-IN ANAMORPHIC LENS

Next Patent: SPIRAL-WOUND MEMBRANE ELEMENT HAVING SCALE INHIBITION FUNCTION