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1. US20190039058 - ORGANOMETALLIC COMPLEXES OF SEQUENTIAL TETRADENTATE MONOANIONIC LIGANDS AND USES THEREOF IN RING OPENING POLYMERIZATION OF CYCLIC ESTERS

Office United States of America
Application Number 16076365
Application Date 08.02.2017
Publication Number 20190039058
Publication Date 07.02.2019
Publication Kind A1
IPC
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
31
Catalysts comprising hydrides, coordination complexes or organic compounds
16
containing coordination complexes
22
Organic complexes
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
63
Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
78
Preparation processes
82
characterised by the catalyst used
B01J 31/22
C08G 63/82
CPC
B01J 2231/54
B01J 2531/004
B01J 2531/0241
B01J 2531/22
B01J 2531/26
B01J 31/2243
Applicants Ramot at Tel-Aviv University Ltd.
Inventors Moshe KOL
Tomer ROSEN
Yanay POPOWSKI
Title
(EN) ORGANOMETALLIC COMPLEXES OF SEQUENTIAL TETRADENTATE MONOANIONIC LIGANDS AND USES THEREOF IN RING OPENING POLYMERIZATION OF CYCLIC ESTERS
Abstract
(EN)

A new family of mononuclear organometallic complexes of a divalent metal bound to sequential tetradentate monoanionic {ONNN}-type ligands, and polymerization of cyclic esters such as lactides utilizing same are provided. Novel tetradentate monoanionic {ONNN}-type ligands usable for forming these complexes are also provided.

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