US 11,911,725 B2
Separation membrane
Kazuya Yoshimura, Ibaraki (JP); Daiki Iwasaki, Ibaraki (JP); Naomichi Kimura, Ibaraki (JP); and Shinya Nishiyama, Ibaraki (JP)
Assigned to NITTO DENKO CORPORATION, Ibaraki (JP)
Appl. No. 17/598,437
Filed by NITTO DENKO CORPORATION, Ibaraki (JP)
PCT Filed Mar. 12, 2020, PCT No. PCT/JP2020/010898
§ 371(c)(1), (2) Date Sep. 27, 2021,
PCT Pub. No. WO2020/195911, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 2019-058741 (JP), filed on Mar. 26, 2019.
Prior Publication US 2022/0161185 A1, May 26, 2022
Int. Cl. B01D 53/22 (2006.01); B01D 69/14 (2006.01); B01D 71/02 (2006.01); B01D 71/70 (2006.01); B01D 71/52 (2006.01); B01D 69/12 (2006.01); B82Y 30/00 (2011.01)
CPC B01D 53/228 (2013.01) [B01D 69/1218 (2022.08); B01D 69/148 (2013.01); B01D 69/14111 (2022.08); B01D 71/021 (2013.01); B01D 71/027 (2013.01); B01D 71/5211 (2022.08); B01D 71/5222 (2022.08); B01D 71/701 (2022.08); B01D 2257/504 (2013.01); B82Y 30/00 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A separation membrane comprising:
a separation functional layer;
a porous support member supporting the separation functional layer; and
an intermediate layer disposed between the separation functional layer and the porous support member, and including a matrix and nanoparticles dispersed in the matrix,
wherein
the separation functional layer includes a polyether block amide resin or an ionic liquid,
the intermediate layer has a thickness of 30 μm or less,
the matrix includes a silicone resin,
the nanoparticle has a spherical shape, and
at least one of requirements (i) and (ii) below holds:
(i) the nanoparticle has a surface modified with a modifying group including a carbon atom;
(ii) the nanoparticle includes silica.