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:
Apr. 06, 2021
Filed:
Sep. 13, 2017
Dow Global Technologies Llc, Midland, MI (US);
Arkady L. Krasovskiy, Lake Jackson, TX (US);
Endre Szuromi, Richmond, TX (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
Catalyst compositions and polymerization systems include at least one thiourea complex according to Formula (I): MQX(I) in which M is Ti, Zr, or Hf; a is 1 or 2; each group Q of the thiourea complex is a bidentate thiourea ligand bound to the metal center and having Formula (Ia), Formula (Ib), or Formula (Ic): (Formulas should be inserted here). In Formulas (Ia), (Ib), and (Ic), each group R, R, and Ris independently chosen from alkyl groups or aryl groups; each group Zor Zis independently chosen from alkylene groups. If a=2, groups Rof the two groups Q are optionally linked, or groups Rof the two groups Q are optionally linked. Each X is covalently bonded or coordinated to the metal center and is independently chosen from alkyl groups or halides. The polymerization systems may be configured to copolymerize ethylene and α-olefins.