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.

Date of Patent:
Sep. 02, 2025

Filed:

Apr. 30, 2024
Applicant:

Chevron Phillips Chemical Company Lp, The Woodlands, TX (US);

Inventors:

Max P. Mcdaniel, Bartlesville, OK (US);

Zhihui Gu, Bellarie, TX (US);

Ted H. Cymbaluk, Seabrook, TX (US);

Anand Ramanathan, Bartlesville, OK (US);

Julian Abrego, Houston, TX (US);

Taryn L. Huber, Houston, TX (US);

David W. Dockter, Kingwood, TX (US);

Assignee:

Chevron Phillips Chemical Company LP, The Woodlands, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 23/26 (2006.01); B01J 21/08 (2006.01); B01J 37/08 (2006.01); B01J 37/14 (2006.01); C08F 10/02 (2006.01);
U.S. Cl.
CPC ...
B01J 23/26 (2013.01); B01J 21/08 (2013.01); B01J 37/08 (2013.01); B01J 37/14 (2013.01); C08F 10/02 (2013.01); C08F 2500/07 (2013.01); C08F 2500/12 (2013.01);
Abstract

Processes for producing activated chromium catalysts such as titanated chromium/silica catalysts are disclosed, and these processes utilize a multistep process involving exposure to inert and oxidizing atmospheres at specific temperature conditions. The resulting activated chromium catalysts have unexpectedly high melt index potential and can produce ethylene-based polymers with lower gel counts in addition to higher melt indices.


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