Process for preparation of ethylene oligomerization catalyst and oligomerization thereof

US11344871B2 · kind B2 · utility

Assignee

• Indian Oil Corporation Limited · IN

Inventors

• Gurmeet Singh · Faridabad, IN
• Rashmi Rani · Faridabad, IN
• Sukhdeep Kaur · Boise, US
• Dheer Singh · Faridabad, IN
• Anju Chopra · Faridabad, IN
• Gurpreet Singh Kapur · Faridabad, IN
• Sankara Sri Venkata RAMAKUMAR · Faridabad, IN

Key dates

• Filing date: Dec 10, 2020
• Grant date: May 31, 2022
• Expiry date: Dec 10, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/52
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention describes a catalyst composition for use as a catalyst system for an ethylene oligomerization, providing high activity and produce linear oligomer product having broad weight percent distribution i.e. C4 to C16. The catalyst composition comprises a zirconium amide compound, an organoaluminum compound and an additive. The present invention also provides a process for preparation of the zirconium amide compound comprising reacting a zirconium component having formula ZrXm.nTHF, wherein X is halogen atom; m is an integer having value equal or less than 4 and n is a number equal or less than 2, and a substituted amide of formula RCONR′R″, wherein R, R′ and R″ are saturated or unsaturated aliphatic C1-C10 hydrocarbon or aromatic C6-C14 hydrocarbon, in the presence of an organic solvent.