HIGH-FLUX CELLULOSE VIRUS REMOVING FILTER MEMBRANE, AND PREPARATION METHOD THEREFOR

WIPO Patent Application WO/2024/051397

A1

A high-flux cellulose virus removing filter membrane comprises a porous main body. The two sides of the filter membrane are respectively a first outer surface and a second outer surface. The porous main body comprises a pre-filter layer and a separation layer with the average pore size being smaller than that of the pre-filter layer. The first outer surface comprises multiple first fibers. Adjacent first fibers form first pores. The average pore size of the first pores is 300 to 4500 nm. The average diameter of the first fibers is 60 to 600 nm, The porosity of the filter membrane is 15% to 50%. The average PMI pore size of the filter membrane is 15 to 25 nm. The flux of the filter membrane is not less than 35L·h -1·m -2@30psi. The surface morphology of the first outer surface of the filter membrane is adjusted to ensure that the cellulose filter membrane is only slightly deformed under a use pressure of 30 psi. The filter membrane has high flux and loading capacity, as well as good hydrophilicity which enables the filter membrane to have a high protein yield.

JIA JIANDONG (CN)

PCT/CN2023/110362

March 14, 2024

July 31, 2023

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HANGZHOU COBETTER FILTRATION EQUIPMENT CO LTD (CN)

B01D71/10; B01D61/00

CN116099385A	2023-05-12
CN115554862A	2023-01-03
CN114887500A	2022-08-12
CN113842792A	2021-12-28
CN106621866A	2017-05-10
JP2008178814A	2008-08-07
US20030038081A1	2003-02-27

HANGZHOU CHUANGZHIZHUOYING INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) et al. (CN)

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