	US 12,065,519 B2
	Synthesis of polymer under conditions of enhanced catalyzed radical termination
Krzysztof Matyjaszewski, Pittsburgh, PA (US); Guojun Xie, Newark, DE (US); Michael R. Martinez, Millbrae, CA (US); and Thomas G. Ribelli, State College, PA (US)
Assigned to CARNEGIE MELLON UNIVERSITY, Pittsburgh, PA (US)
Appl. No. 17/059,806
Filed by CARNEGIE MELLON UNIVERSITY, Pittsburgh, PA (US)
PCT Filed Jun. 1, 2019, PCT No. PCT/US2019/035090 § 371(c)(1), (2) Date Nov. 30, 2020, PCT Pub. No. WO2019/232500, PCT Pub. Date Dec. 5, 2019.
Claims priority of provisional application 62/763,160, filed on Jun. 1, 2018.
Prior Publication US 2021/0309783 A1, Oct. 7, 2021
Int. Cl. C08F 2/46 (2006.01); C08F 2/48 (2006.01); C08F 2/50 (2006.01); C08F 293/00 (2006.01); C08G 61/04 (2006.01)

CPC C08F 2/48 (2013.01) [C08F 293/005 (2013.01); C08F 2438/01 (2013.01); C08F 2810/20 (2013.01)]

21 Claims

1. A method of carrying out an atom transfer radical polymerization wherein intermolecular crosslinking can occur, comprising: controlling an amount of crosslinking in a reaction which is homogeneous by carrying out the reaction under conditions wherein catalytic radical termination, in which a chain-end radical coordinates with an active catalyst complex L/Mt^z, is favored over radical termination, in which chain-end radicals combine, wherein Mt is a transition metal having two stable oxidation states, z and z+1 differ by 1, and L is a ligand.