US 11,904,295 B2
Thiol-functionalized hyper-crosslinked polymers with hierarchical porosities for the capture and recovery of heavy metal contaminants
Ananya M. Agrawal, Mumbai (IN); SonBinh T. Nguyen, Evanston, IL (US); and Sanjiban Chakraborty, Fremont, CA (US)
Assigned to Northwestern University, Evanston, IL (US)
Appl. No. 17/043,372
Filed by Northwestern University, Evanston, IL (US)
PCT Filed May 29, 2019, PCT No. PCT/US2019/034258
§ 371(c)(1), (2) Date Sep. 29, 2020,
PCT Pub. No. WO2019/231956, PCT Pub. Date Dec. 5, 2019.
Claims priority of provisional application 62/677,485, filed on May 29, 2018.
Prior Publication US 2021/0121851 A1, Apr. 29, 2021
Int. Cl. B01J 20/26 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); C02F 1/28 (2023.01); C08F 8/34 (2006.01); C08F 212/14 (2006.01); C02F 101/20 (2006.01); C08F 112/14 (2006.01)
CPC B01J 20/267 (2013.01) [B01J 20/28064 (2013.01); B01J 20/28083 (2013.01); B01J 20/3085 (2013.01); C02F 1/285 (2013.01); C08F 8/34 (2013.01); C08F 212/30 (2020.02); C02F 2101/20 (2013.01); C08F 112/18 (2020.02); C08F 2800/10 (2013.01); C08F 2810/20 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A crosslinked vinylbenzylchloride-divinylbenzene copolymer that is thiol-functionalized and has a mole ratio of vinylbenzylchloride monomer to divinylbenzene monomer in a range from 99:1 to 80:20, wherein the crosslinked vinylbenzylchloride-divinylbenzene copolymer comprises both mesopores and micropores and further wherein the mesopores make up at least 20% of a total pore volume of the crosslinked vinylbenzylchloride-divinylbenzene copolymer.