Exxonmobil Chemical Patents Inc.

Chevron Oronite Company LLC

Exxonmobil Engineering & Technology Company

Chase A Eckert

Jo Ann M Canich

Sarah J Mattler

John Robert Hagadorn

Zhifeng Bai

Rhutesh K Shah

Jingwen Zhang

Florin Barsan

Peijun Jiang

David L Morgan

Pritesh A Patel

Shuhui Kang

Maryam Sepehr

Sara Yue Zhang

Adrian Garcia Barry

Pritesh Arjunbhai Patel

The present disclosure provides methods for producing an olefin polymer by contacting a C-Colefin and ethylene with a catalyst system including an activator and a metallocene catalyst compound comprising a substituted or unsubstituted tetrahydro-s-indacenyl group and obtaining a C-Colefin-ethylene copolymer typically comprising from 0.5 to 43 wt % ethylene, and from 99.5 to 57 wt % Cto Ccomonomer wherein the Tg of the terpolymer is from 0 to −60° C.

High propylene content EP having low glass transition temperatures

Provided is a lubricating oil composition that includes a major amount of a lubricant base oil and a minor amount of a viscosity index improver comprising a syndiotactic propylene-based ethylene-propylene copolymer comprising: a) 2 to 20% by weight of ethylene, b) 80 to 98% by weight of propylene; c) 50 to 99% of rr triads; and d) Mw (LS) of 10 to 250 kg/mol.

Lubricating oil composition with viscosity modifier based on syndiotactic propylene-based ethylene- propylene copolymers with improved properties

The present disclosure provides methods for producing an olefin polymer by contacting a C-Colefin, ethylene and a diene with a catalyst system including an activator and a metallocene catalyst compound comprising a substituted or unsubstituted indacenyl group and obtaining a C-Colefin-ethylene-diene terpolymer typically comprising from 30 to 55 mol % ethylene, from 69.09 to 45 mol % Cto Ccomonomer, and from 0.01 to 7 mol % diene wherein the Tg of the terpolymer is &#x2212;28&#xb0; C. or less. Preferably, a propylene-ethylene-ethylidene norbornene is obtained.

Processes for producing high propylene content PEDM having low glass transition temperatures using tetrahydroindacenyl catalyst systems

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Houston, TX, United States of America

Chase A Eckert