Title:
VIRUS-REMOVING COMPOSITE MEMBRANE AND PREPARATION PROCESS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/087772
Kind Code:
A1
Abstract:
A virus-removing composite membrane and a preparation process therefor. The virus-removing composite membrane comprises a main body. The main body comprises a porous substrate layer comprising a liquid inlet surface and a separation layer comprising a liquid outlet surface. The porous substrate layer is a microporous membrane layer formed by a first polymer. The separation layer is formed by a second polymer. The first polymer and the second polymer are different polymer materials. In an area on the side of the porous substrate layer close to the separation layer, the second polymer permeates from the surface of the porous substrate layer into a pore structure of the porous substrate layer to form a binding area, and pores formed by the second polymer in the binding area are communicated with pores of the separation layer. The virus-removing composite membrane not only has better interception efficiency for parvoviruses, but also has good flow-through properties and mechanical strength and a relatively high protein yield, and is especially suitable for being applied to virus removal in biological products and the field of medicines.
Inventors:
JIA JIANDONG (CN)
LU HONGXING (CN)
LU HONGXING (CN)
Application Number:
PCT/CN2023/110371
Publication Date:
May 02, 2024
Filing Date:
July 31, 2023
Export Citation:
Assignee:
HANGZHOU COBETTER FILTRATION EQUIPMENT CO LTD (CN)
International Classes:
B01D71/10; B01D67/00; B01D69/02; B01D69/12; B01D71/56
Attorney, Agent or Firm:
HANGZHOU CHUANGZHIZHUOYING INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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