Ethylene-propylene linear copolymers as viscosity modifiers

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United States of America Patent

PATENT NO 11578155
APP PUB NO 20210040250A1
SERIAL NO

16978327

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Abstract

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In some embodiments, ethylene-propylene random copolymers as viscosity modifiers were synthesized with pyridyldiamido catalyst systems and a chain transfer agent. In some embodiments, the present disclosure provides for ethylene-propylene random copolymers having an ethylene content between about 45 wt % and about 55 wt %. In some embodiments, the ethylene-propylene random copolymer is used as a viscosity modifier in a lubricating composition and a fuel composition.

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  • EXXONMOBIL CHEMICAL PATENTS INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brobey, Britni J Houston, US 3 5
Canich, Jo Ann M Houston, US 146 3713
Hagadorn, John R Houston, US 120 907
Jiang, Peijun Katy, US 153 2789
Kolb, Rainer Kinwood, US 62 514
Shivokhin, Maksim Houston, US 4 4
Zhang, Jingwen Houston, US 47 101

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