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    • 3. 发明公开
    • METHOD OF MANUFACTURING A MICROPOROUS POLYMER STRUCTURE
    • EP4397397A1
    • 2024-07-10
    • EP23150340.0
    • 2023-01-04
    • Novamem AG
    • Loepfe, MichaelKellenberger, Christoph Ruedi
    • B01D63/08B01D69/10
    • B01D69/1071B01D61/14B01D63/087B01D2313/02520130101B01D2313/0420130101
    • A method of manufacturing a microporous polymer structure (1) with at least one porous region (2) and a substantially non-porous support structure (3) configured to support said at least one porous region (2), the method comprising the steps of: i) providing a substrate (4); ii) providing a first composition (5) comprising a first polymer (5a), at least one solvent (5b) for said first polymer, and one or both of nanoparticles and microparticles (5c) dispersed within said first composition (5); iii) providing a second composition (6) comprising a second polymer (6a); iv) applying the first composition (5) to a surface (4a) of said substrate (4) to form a first coating layer (7); v) effecting a phase separation in the first coating layer (7) to obtain a phase separated coating layer (7'); vi) applying the second composition (6) to the same surface (4a) of said substrate (4) and/or onto the phase separated first coating layer (7'); vii) physically hardening or curing the second composition (6) applied in step vi) to obtain the non-porous support structure (3); viii) dissolving said nanoparticles and/or microparticles (5c) with a washing solvent to obtain the porous region (2); wherein said non-porous support structure and said porous regions are arranged on the substrate such that they form common interfaces, and wherein the phase separation in the first coating layer (7) in step v) is effected from one side of the first coating layer (7).