	US 12,264,225 B2
	Polyester recycling process with pre-reaction purification
Gregory Breyta, San Jose, CA (US); and Rudy J. Wojtecki, San Jose, CA (US)
Assigned to Taclov, LLC, Armonk, NY (US)
Filed by TACLOV, LLC, Armonk, NY (US)
Filed on Oct. 8, 2023, as Appl. No. 18/377,813.
Application 18/377,813 is a continuation of application No. 17/540,164, filed on Dec. 1, 2021, granted, now 11,814,492.
Claims priority of provisional application 63/120,346, filed on Dec. 2, 2020.
Prior Publication US 2024/0101777 A1, Mar. 28, 2024
Int. Cl. C08J 7/02 (2006.01); C08J 11/26 (2006.01)

CPC C08J 7/02 (2013.01) [C08J 11/26 (2013.01); C08J 2367/02 (2013.01)]

18 Claims

1. A method comprising:

distilling a material comprising a polyester to remove volatile impurities from the material;

reacting the distilled material with an organocatalyst and an alcohol solvent in a chemical reactor; and

recovering reaction products from the chemical reactor upon completion of the depolymerization, wherein the reaction products comprise (i) a monomeric or oligomeric diester from the polyester, (ii) the organocatalyst for reuse, and (iii) the alcohol solvent as an unreacted by-product of the depolymerization.