US 12,215,199 B2
Polypropylene backbone, and nanoporous polypropylene membrane
Artur Rozanski, Geleen (NL); Lidia Jasinska-Walc, Geleen (NL); Miloud Bouyahyi, Geleen (NL); Lanti Yang, Geleen (NL); Robbert Duchateau, Geleen (NL); Thomas Defize, Geleen (NL); and Katrien Veerle Bernaerts, Geleen (NL)
Assigned to SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
Appl. No. 17/440,475
Filed by SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
PCT Filed Mar. 12, 2020, PCT No. PCT/EP2020/056660
§ 371(c)(1), (2) Date Sep. 17, 2021,
PCT Pub. No. WO2020/200688, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 19166064 (EP), filed on Mar. 29, 2019.
Prior Publication US 2022/0169802 A1, Jun. 2, 2022
Int. Cl. C08G 81/02 (2006.01); B01D 67/00 (2006.01); B01D 71/26 (2006.01); B01D 71/48 (2006.01); B01D 71/78 (2006.01); C02F 1/44 (2023.01); H01M 50/414 (2021.01); H01M 50/417 (2021.01); H01M 50/449 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); H01M 50/406 (2021.01)
CPC C08G 81/027 (2013.01) [B01D 67/0031 (2022.08); B01D 71/261 (2022.08); B01D 71/262 (2022.08); B01D 71/48 (2013.01); B01D 71/78 (2013.01); C02F 1/442 (2013.01); H01M 50/414 (2021.01); H01M 50/417 (2021.01); H01M 50/449 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); B01D 2325/02833 (2022.08); B01D 2325/04 (2013.01); C08G 2340/00 (2013.01); H01M 50/406 (2021.01)] 16 Claims
OG exemplary drawing
 
1. A film comprising a random graft copolymer having a polypropylene (PP) backbone and from 3 to 8 polyester segments covalently bonded to said PP backbone,
wherein the number average molecular weight, Mn, of the PP backbone ranges between 10 and 100 kDa,
wherein the Mn of each polyester segment ranges between 5 and 25 kDa,
wherein the amount of PP ranges between 45 and 80 mol %,
wherein the amount of polyester segments ranges between 55 and 20 mol %,
wherein the film has a thickness in the range of 0.01-10 mm,
wherein the PP and polyester domains form gyroid bicontinuous morphology,
wherein the mol % is calculated relative to the total moles of monomer units present in the copolymer
wherein the polyester segments are self-arranged in domains suitable to form porous channel through the film after a segment sacrifice process.