	US 12,173,116 B2
	Degradable polymer structures from carbon dioxide and olefin and corresponding method
James M. Eagan, Akron, OH (US); and Luis D. Garcia Espinosa, Streetsboro, OH (US)
Assigned to THE UNIVERSITY OF AKRON, Akron, OH (US)
Filed by James M. Eagan, Akron, OH (US); and Luis D. Garcia Espinosa, Streetsboro, OH (US)
Filed on Sep. 8, 2021, as Appl. No. 17/469,100.
Claims priority of provisional application 63/225,160, filed on Jul. 23, 2021.
Claims priority of provisional application 63/075,429, filed on Sep. 8, 2020.
Prior Publication US 2022/0073675 A1, Mar. 10, 2022
Int. Cl. C08G 63/08 (2006.01); C08G 63/82 (2006.01); C08G 63/87 (2006.01)

CPC C08G 63/08 (2013.01) [C08G 63/823 (2013.01); C08G 63/87 (2013.01)]

10 Claims

1. A method of producing a degradable material, the method comprising steps of

hydrogenating δ-valerolactone 2-ethylidene-6-hepten-5-olide (EVL) by introducing hydrogen to the EVL, to thereby produce modified EVL;

combining the modified EVL with a catalyst to form a reaction mixture; and

subjecting the reaction mixture to reaction conditions that will allow the modified EVL to react by ring-opening polymerization in the presence of the catalyst to thereby form a product composition including polymeric-EVL, wherein the polymeric-EVL is hydrolytically degradable, wherein the reaction conditions include a reaction temperature of from −40° C. to 70° C.