US 12,128,363 B2
Ultra-violet treatment of membranes and resulting membrane
Lucas D. McIntosh, Minneapolis, MN (US); Aniruddha A. Upadhye, St. Paul, MN (US); and Joel A. Getschel, Osceola, WI (US)
Assigned to Solventum Intellectual Properties Company, Maplewood, MN (US)
Appl. No. 17/294,601
Filed by Solventum Intellectual Properties Company, Maplewood, MN (US)
PCT Filed Nov. 21, 2019, PCT No. PCT/IB2019/060045
§ 371(c)(1), (2) Date May 17, 2021,
PCT Pub. No. WO2020/109943, PCT Pub. Date Jun. 4, 2020.
Claims priority of provisional application 62/772,710, filed on Nov. 29, 2018.
Claims priority of provisional application 62/772,329, filed on Nov. 28, 2018.
Prior Publication US 2021/0402354 A1, Dec. 30, 2021
Int. Cl. B01D 67/00 (2006.01); B01D 69/02 (2006.01); B01D 69/06 (2006.01); B01D 71/52 (2006.01); B01D 71/68 (2006.01)
CPC B01D 67/009 (2013.01) [B01D 67/0079 (2013.01); B01D 69/02 (2013.01); B01D 69/06 (2013.01); B01D 71/522 (2022.08); B01D 71/68 (2013.01); B01D 2311/2619 (2013.01); B01D 2323/345 (2013.01); B01D 2325/0232 (2022.08); B01D 2325/026 (2013.01); B01D 2325/44 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A membrane comprising:
a first outer surface having a plurality of pores in a skin layer;
the plurality of pores having a closed perimeter in the skin layer;
a second outer surface;
a porous supporting layer connecting the first outer surface to the second outer surface; and
wherein the first outer surface comprises a melt-fused skin layer from exposure to ultra-violet light;
wherein the melt-fused skin layer has a depth and the depth extends for 500 nanometers or less; and
wherein the membrane has a throughput capacity expressed as a mass of filtrate weighed after 10 minutes of filtration, and wherein the throughput capacity is between about 100 to 1000 grams.