Title:
METHOD FOR PREPARING POROUS POLYMER SEMI-PERMEABLE MEMBRANE, AND PRODUCT THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/073407
Kind Code:
A1
Abstract:
Provided by the present invention is a method for preparing a porous polymer semi-permeable membrane: in a solvent which can dissolve both, dissolving and mixing a hydrophobic polynorbornene polymer with a hydrophilic small molecule crosslinker containing a thiol functional group to obtain a coating solution; coating the surface of a biosensor electrode, and drying and separating hydrophobic and hydrophilic components from each other, then forming a film and crosslinking and then removing the unreacted hydrophilic small molecule crosslinker and re-drying to obtain a porous polymer semi-permeable membrane; also disclosed is a product. In the product obtained by the preparation method of the present invention, the hydrophobic nature of the polymer enables good adhesion of the porous polymer semi-permeable membrane to the surface of the biosensor, and the porous structure ensures the diffusion of biological material to the surface of the biosensor and regulates the diffusion rate of the biological substance in semi-permeable membrane without needing to change the thickness of the polymer membrane significantly.
Inventors:
ZOU PENG (CN)
Application Number:
PCT/CN2021/117123
Publication Date:
April 14, 2022
Filing Date:
September 08, 2021
Export Citation:
Assignee:
DREISAM BEIJING MEDICAL TECH CO LTD (CN)
International Classes:
B01D71/76; B01D67/00; G01N27/327
Domestic Patent References:
| WO2019145481A1 | 2019-08-01 |
Foreign References:
| CN112426896A | 2021-03-02 | |||
| CN106823856A | 2017-06-13 | |||
| CN106397805A | 2017-02-15 | |||
| JP2000107578A | 2000-04-18 |
Other References:
NDAYA DENNIS, BOSIRE REUBEN, MAHAJAN LALIT, HUH SCARLET, KASI RAJESWARI: "Synthesis of ordered, functional, robust nanoporous membranes from liquid crystalline brush-like triblock copolymers", POLYMER CHEMISTRY, vol. 9, no. 12, 1 January 2018 (2018-01-01), pages 1404 - 1411, XP055921624, ISSN: 1759-9954, DOI: 10.1039/C7PY02127E
See also references of EP 4108320A4
See also references of EP 4108320A4
Attorney, Agent or Firm:
BEIJING IPLING INTELLECTUAL PROPERTY LAW FIRM (CN)
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