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:
Oct. 20, 2020
Filed:
Jul. 15, 2016
Public Joint Stock Company “sibur Holding”, Tobolsk, RU;
Vladislav Alexandrovich Kardash, Tomskaya obl., RU;
Denis Alekseevich Lenev, Moskovskaya obl., RU;
Maxim Vladimirovich Lipskikh, Tomsk, RU;
Rafael Acevedo Forero, Tomsk, RU;
PUBLIC JOINT STOCK COMPANY “SIBUR HOLDING”, Region Tobolsk, RU;
Abstract
The present invention relates to a method of preparing α-olefins by oligomerization of C-Colefins. The method is carried out by oligomerization of C-Colefins in the presence of a catalyst system comprising a transition metal source, an activator, which is an alkylaluminoxane, and a compound of formula (I), ArArP—N(R)—PArAr[formula I], wherein Arare the same or different and are selected from substituted or unsubstituted C-Caryl, R is selected from linear or branched C-Calkyl, substituted or unsubstituted C-Caryl, and substituted or unsubstituted C-Ccycloalkyl, wherein the oligomerization is carried out in a solvent, which is a bicyclic compound or a mixture of bicyclic compounds, preferably decalin. The claimed method provides a significant increase in the activity of the catalyst during the oligomerization process and, as a consequence, a reduction in the catalyst unit consumption, as well a reduction in the formation of polymer by-product.