US 12,252,614 B2
Synthetic membrane composition comprising a polyurethane and a polyoxazoline
Jennifer Al-Rashid, Exton, PA (US); Jacob Riffey, Exton, PA (US); Chad Sugiyama, Exton, PA (US); and John Zupancich, Exton, PA (US)
Assigned to DSM IP ASSETS B.V., Heerlen (NL)
Filed by DSM IP Assets B.V., Heerlen (NL)
Filed on Mar. 29, 2023, as Appl. No. 18/127,892.
Application 18/127,892 is a continuation of application No. 16/642,053, granted, now 11,643,551, previously published as PCT/US2018/048315, filed on Aug. 28, 2018.
Claims priority of provisional application 62/550,937, filed on Aug. 28, 2017.
Claims priority of provisional application 62/550,929, filed on Aug. 28, 2017.
Claims priority of provisional application 62/550,922, filed on Aug. 28, 2017.
Claims priority of application No. 17191475 (EP), filed on Sep. 15, 2017; application No. 17191476 (EP), filed on Sep. 15, 2017; and application No. 17191477 (EP), filed on Sep. 15, 2017.
Prior Publication US 2024/0026152 A1, Jan. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C08L 75/08 (2006.01); A61B 5/145 (2006.01); A61B 5/1473 (2006.01); B01D 67/00 (2006.01); B01D 69/02 (2006.01); B01D 71/54 (2006.01); B01D 71/58 (2006.01); C08G 18/24 (2006.01); C08G 18/28 (2006.01); C08G 18/48 (2006.01); C08G 18/66 (2006.01); C08G 18/73 (2006.01); C08G 18/75 (2006.01); C08J 5/18 (2006.01); C12Q 1/00 (2006.01)
CPC C08L 75/08 (2013.01) [A61B 5/14532 (2013.01); A61B 5/14735 (2013.01); B01D 67/0011 (2013.01); B01D 67/0095 (2013.01); B01D 69/02 (2013.01); B01D 71/54 (2013.01); B01D 71/58 (2013.01); C08G 18/244 (2013.01); C08G 18/2825 (2013.01); C08G 18/283 (2013.01); C08G 18/4808 (2013.01); C08G 18/4833 (2013.01); C08G 18/4854 (2013.01); C08G 18/6674 (2013.01); C08G 18/73 (2013.01); C08G 18/755 (2013.01); C08G 18/758 (2013.01); C08J 5/18 (2013.01); C12Q 1/00 (2013.01); A61B 5/14546 (2013.01); B01D 2323/12 (2013.01); B01D 2325/34 (2013.01); B01D 2325/36 (2013.01); C08J 2375/08 (2013.01); C08J 2475/04 (2013.01); C08L 2203/16 (2013.01); C08L 2205/025 (2013.01)] 20 Claims
 
1. A composition for forming a membrane comprising from 80 to 99.5 wt %, based on the total weight of the composition, of a solvent and from 0.5 to 20 wt %, based on the total weight of the composition, of a polymer mixture, the polymer mixture comprising from 60 to 99.5 wt %, based on the total weight of the polymer mixture, of a polyurethane and from 0.5 to 40 wt %, based on the total weight of the polymer mixture, of a free hydrophilic polymer comprising a polyoxazoline,
wherein the polyurethane comprises a backbone comprising the reaction product of a diisocyanate, a polymeric aliphatic diol, and optionally a chain extender, and
wherein the free hydrophilic polymer is a hydrophilic polymer that is not bound to the polyurethane by covalent bonds.