US 11,807,715 B2
Ring-opening polymerizations using a flow reactor
Nathaniel H. Park, San Jose, CA (US); James L. Hedrick, Pleasanton, CA (US); Victoria A. Piunova, Los Gatos, CA (US); Dmitry Zubarev, San Jose, CA (US); Gavin O. Jones, San Jose, CA (US); Robert M. Waymouth, Palo Alto, CA (US); and Binhong Lin, Stanford, CA (US)
Assigned to International Business Machines Corporation, Armonk, NY (US); and THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIO, Stanford, CA (US)
Filed by International Business Machines Corporation, Armonk, NY (US); and The Board of Trustees of the Leland Stanford Junior University, Stanford, CA (US)
Filed on Aug. 11, 2021, as Appl. No. 17/399,533.
Application 17/399,533 is a division of application No. 16/028,989, filed on Jul. 6, 2018, granted, now 11,118,008.
Prior Publication US 2021/0371583 A1, Dec. 2, 2021
Int. Cl. C08G 63/82 (2006.01); C08G 64/02 (2006.01); C08G 79/04 (2006.01); C08G 75/26 (2006.01); C08G 67/00 (2006.01); C08G 63/685 (2006.01); C08G 64/20 (2006.01); C08G 63/78 (2006.01); C08G 64/30 (2006.01); C08G 6/00 (2006.01)
CPC C08G 63/823 (2013.01) [C08G 6/00 (2013.01); C08G 63/685 (2013.01); C08G 63/785 (2013.01); C08G 64/0208 (2013.01); C08G 64/205 (2013.01); C08G 64/30 (2013.01); C08G 75/26 (2013.01); C08G 79/04 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method, comprising:
polymerizing, via a ring-opening polymerization within a flow reactor, a cyclic monomer in the presence of an anionic organocatalyst characterized by a chemical structure:

OG Complex Work Unit Chemistry
wherein X corresponds to an anion selected from a first group consisting of an oxygen anion, a sulfur anion, and a nitrogen anion;
wherein L corresponds to an atom selected from a second group consisting of a carbon atom and a nitrogen atom;
wherein R1 corresponds to a first functional group selected from a third group consisting of a first alkyl group and a first aryl group;
wherein R2 corresponds to a second functional group selected from a fourth group consisting of a second alkyl group and a second aryl group; and
wherein R3 corresponds to a third functional group selected from a fifth group consisting of a third alkyl group and a third aryl group.