	US 11,890,582 B2
	Highly retentive polyamide hollow fiber membranes produced via controlled shrinkage
Maybelle Woo, Dedham, MA (US); Jeffrey E. Townley, Lowell, MA (US); and Kwok-Shun Cheng, Nashua, MA (US)
Assigned to ENTEGRIS, INC., Billerica, MA (US)
Appl. No. 16/312,653
Filed by ENTEGRIS, Inc., Billerica, MA (US)
PCT Filed Jun. 26, 2017, PCT No. PCT/US2017/039203 § 371(c)(1), (2) Date Dec. 21, 2018, PCT Pub. No. WO2018/005326, PCT Pub. Date Jan. 4, 2018.
Claims priority of provisional application 62/355,001, filed on Jun. 27, 2016.
Prior Publication US 2019/0255489 A1, Aug. 22, 2019
Int. Cl. B01D 69/08 (2006.01); B01D 69/02 (2006.01); B01D 63/02 (2006.01); B01D 61/14 (2006.01); B01D 67/00 (2006.01); B01D 71/56 (2006.01)

CPC B01D 69/08 (2013.01) [B01D 61/14 (2013.01); B01D 63/02 (2013.01); B01D 67/0016 (2013.01); B01D 69/02 (2013.01); B01D 69/081 (2013.01); B01D 69/087 (2013.01); B01D 71/56 (2013.01); B01D 2325/20 (2013.01)]

11 Claims

1. A polyamide hollow fiber membrane, having an isopropanol permeability of from about 5 L/m²h bar to about 150 L/m²h bar, a mean bubble point of from about 50 psi to about 150 psi as measured with HFE-7200, and a particle rejection percentage of about 100% for particles having a nominal diameter of from about 1 nm to about 25 nm after being wound onto and dried on a compressible frame.