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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 10421829 B1

PDFFull Text
Date of Patent:
Sep. 24, 2019

Filed:

Feb. 26, 2018

Producing polyolefin products

Applicant:

Univation Technologies, Llc, Houston, TX (US);

Inventors:

Francis C. Rix, League City, TX (US);

Alexander D. Todd, Austin, TX (US);

C. Jeff Harlan, Houston, TX (US);

Assignee:

Univation Technologies, LLC, Houston, TX (US);

Attorney:

Brooks, Cameron & Huebsch, PLLC

Primary Examiner:

Caixia Lu

Int. Cl.
CPC ...
C08F 4/653 (2006.01); C08F 4/6592 (2006.01); C08F 210/16 (2006.01); C08F 4/659 (2006.01); C07F 17/00 (2006.01); C08F 210/02 (2006.01); C08F 4/76 (2006.01); C08F 2/00 (2006.01); C08F 2/34 (2006.01); C08J 5/18 (2006.01); C08L 23/08 (2006.01); C08F 210/14 (2006.01); C08F 210/08 (2006.01);
U.S. Cl.
CPC ...
C08F 210/16 (2013.01); C07F 17/00 (2013.01); C08F 2/00 (2013.01); C08F 2/34 (2013.01); C08F 4/65904 (2013.01); C08F 4/76 (2013.01); C08F 210/02 (2013.01); C08J 5/18 (2013.01); C08F 4/65912 (2013.01); C08F 4/65916 (2013.01); C08F 4/65925 (2013.01); C08F 4/65927 (2013.01); C08F 210/08 (2013.01); C08F 210/14 (2013.01); C08F 2410/02 (2013.01); C08F 2420/00 (2013.01); C08F 2420/01 (2013.01); C08F 2500/01 (2013.01); C08F 2500/02 (2013.01); C08F 2500/08 (2013.01); C08F 2500/09 (2013.01); C08F 2500/10 (2013.01); C08F 2500/11 (2013.01); C08F 2500/12 (2013.01); C08F 2500/13 (2013.01); C08F 2500/18 (2013.01); C08F 2800/20 (2013.01); C08J 2323/08 (2013.01); C08L 23/0815 (2013.01);
Abstract

Catalyst systems and methods for making and using the same. A method of methylating a catalyst composition while substantially normalizing the entiomeric distribution is provided. The method includes slurrying the organometallic compound in dimethoxyethane (DME), and adding a solution of RMgBr in DME, wherein R is a methyl group or a benzyl group, and wherein the RMgBr is greater than about 2.3 equivalents relative to the organometallic compound. After the addition of the RMgBr, the slurry is mixed for at least about four hours. An alkylated organometallic is isolated, wherein the methylated species has a meso/rac ratio that is between about 0.9 and about 1.2.

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