Ziegler-natta catalyst systems comprising a 1,2-phenylenedioate as internal donor and process for preparing the same

US9593172B2 · kind B2 · utility

Assignee

• Indian Oil Corporation Limited · IN

Inventors

• Bhasker Bantu · Faridabad, IN
• Gurmeet Singh · Faridabad, IN
• Sukhdeep Kaur · Boise, US
• Naresh Kumar · Barwala, IN
• Gurpreet Singh Kapur · Faridabad, IN
• Shashi Kant · Faridabad, IN
• Ravinder Kumar Malhotra · Faridabad, IN

Key dates

• Filing date: Jul 12, 2013
• Grant date: Mar 14, 2017
• Expiry date: Jul 12, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F110/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A catalyst composition for use as precursor for Ziegler-Natta catalyst system, said catalyst composition comprising a combination of magnesium moiety, titanium moiety and an internal donor containing at least one 1,2-phenylenedioate compound of structure (A). Also, the present invention provides a process for preparing the aforesaid catalyst composition. Further, the present invention provides a Ziegler-Natta catalyst system incorporating the aforesaid catalyst composition and a method for polymerizing and/or copolymerizing olefins using the Ziegler-Natta catalyst system.