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:
Sep. 14, 2021
Filed:
Jun. 20, 2018
Applicant:
Instituto Superior Técnico, Lisbon, PT;
Inventors:
Patrícia Da Silva Lopes, Almada, PT;
Cláudia Alexandra Carica Figueira, Almada, PT;
Pedro Manuel Machado Teixeira Gomes, Lisbon, PT;
Assignee:
INSTITUTO SUPERIOR TÉCNICO, Lisbon, PT;
Primary Examiner:
Int. Cl.
CPC ...
C07F 15/04 (2006.01); C08F 4/70 (2006.01); C08F 110/02 (2006.01); C08G 83/00 (2006.01);
U.S. Cl.
CPC ...
C07F 15/04 (2013.01); C08F 110/02 (2013.01); C08G 83/005 (2013.01); C08F 4/70 (2013.01); C08F 4/7039 (2013.01); C08F 4/7067 (2013.01); C08F 4/7068 (2013.01);
Abstract
The present invention relates to the preparation of novel nickel complexes containing iminopyrrolyl-type ligands, having the general molecular structure (I), and to their use as active catalysts in the polymerisation reaction of ethylene to hyperbranched polyethylene. The structure of the ligand precursor is such that it allows the occurrence of a cyclometallation reaction by the activation of a C—H bond, in the coordination reaction to the metal centre, generating a C,N,N'-tridentate complex.