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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.:

US 11896965 B1

PDFFull Text
Date of Patent:
Feb. 13, 2024

Filed:

Oct. 14, 2022

Chromium complex and catalyst therefrom

Applicant:

Dow Global Technologies Llc, Midland, MI (US);

Inventors:

Jerzy Klosin, Midland, MI (US);

Kara A. Milbrandt, Freeland, MI (US);

Scott D. Boelter, Saginaw, MI (US);

David R. Wilson, Midland, MI (US);

Mari S. Rosen, Midland, MI (US);

Dean M. Welsh, Midland, MI (US);

Peter M. Margl, Midland, MI (US);

Kyoung Moo Koh, Midland, MI (US);

David M. Pearson, Lake Jackson, TX (US);

Rafael Huacuja, Rosharon, TX (US);

Assignee:

Dow Global Technologies LLC, Midland, MI (US);

Attorney:

Brooks, Cameron & Huebsch, PLLC

Primary Examiner:

Yun Qian

Int. Cl.
CPC ...
B01J 31/24 (2006.01); B01J 31/14 (2006.01); B01J 31/18 (2006.01); C07C 2/36 (2006.01); C07F 9/6568 (2006.01); C07F 9/6584 (2006.01); C07F 11/00 (2006.01); C07F 17/02 (2006.01); C07F 9/6571 (2006.01); B01J 31/22 (2006.01);
U.S. Cl.
CPC ...
B01J 31/2433 (2013.01); B01J 31/143 (2013.01); B01J 31/188 (2013.01); B01J 31/2208 (2013.01); B01J 31/2438 (2013.01); B01J 31/2457 (2013.01); B01J 31/2476 (2013.01); B01J 31/2495 (2013.01); C07C 2/36 (2013.01); C07F 9/6568 (2013.01); C07F 9/6571 (2013.01); C07F 9/65683 (2013.01); C07F 9/65685 (2013.01); C07F 9/65842 (2013.01); C07F 9/65844 (2013.01); C07F 9/65846 (2013.01); C07F 9/65848 (2013.01); C07F 9/657154 (2013.01); C07F 11/005 (2013.01); C07F 17/02 (2013.01); B01J 2231/20 (2013.01); B01J 2531/62 (2013.01); B01J 2540/10 (2013.01); B01J 2540/22 (2013.01); B01J 2540/225 (2013.01); B01J 2540/30 (2013.01); B01J 2540/34 (2013.01); B01J 2540/444 (2013.01); C07C 2531/14 (2013.01); C07C 2531/18 (2013.01); C07C 2531/24 (2013.01);
Abstract

The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.

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