US 11,931,695 B2
Hydrophobic membranes and membrane distillation methods
Vinay Goel, Acton, MA (US); Jad A. Jaber, Westford, MA (US); and Saksatha Ly, Lexington, MA (US)
Assigned to ENTEGRIS, INC., Billerica, MA (US)
Filed by ENTEGRIS, INC., Billerica, MA (US)
Filed on Apr. 16, 2021, as Appl. No. 17/232,416.
Claims priority of provisional application 63/010,831, filed on Apr. 16, 2020.
Prior Publication US 2021/0322925 A1, Oct. 21, 2021
Int. Cl. B01D 69/02 (2006.01); B01D 3/14 (2006.01); B01D 61/36 (2006.01); B01D 71/56 (2006.01); C02F 1/44 (2023.01); C02F 101/32 (2006.01)
CPC B01D 61/364 (2013.01) [B01D 3/145 (2013.01); B01D 61/366 (2013.01); B01D 69/02 (2013.01); B01D 71/56 (2013.01); C02F 1/447 (2013.01); B01D 2325/02 (2013.01); B01D 2325/04 (2013.01); B01D 2325/36 (2013.01); B01D 2325/38 (2013.01); C02F 2101/322 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A hydrophobic distillation membrane having a hydrophobic surface, the membrane comprising:
a base membrane comprising a base membrane surface having a surface energy of at least 47 mN/m, and
fluorinated groups added at the base membrane surface to produce the hydrophobic surface, the hydrophobic surface having a surface energy below 20 mN/m.