The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 2023
Filed:
Jun. 01, 2022
Applicant:
Technische Universität München, Munich, DE;
Inventors:
Friederike Adams, Munich, DE;
Bernhard Rieger, Oberelchingen, DE;
Assignee:
Technische Universität München, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 63/84 (2006.01); C07F 5/00 (2006.01); C08G 63/08 (2006.01);
U.S. Cl.
CPC ...
C08G 63/84 (2013.01); C07F 5/003 (2013.01); C08G 63/08 (2013.01);
Abstract
A catalyst/initiator system that can be used for polymerizing β-butyrolactone is described. The catalyst/initiator system includes a rare earth metal, a chiral ligand, at least one nucleophilic ligand, optionally at least one solvent ligand, and optionally an alkali based co-catalyst. The chiral ligand can have the structure of Formula A, as shown below: wherein Y represents rare earth metal Yttrium, Ph represents Phenyl radical and thf represents tetrahydrofuran solvent ligand.