Process for preparation of a heterogeneous catalyst useful for preparation of super high molecular weight polymers of alpha-olefin

US6015768A · kind A · utility

Inventors

• Sabyasachi Sinha Ray · New Delhi, IN
• Deepak Kumar Tuli · Faridabad, IN
• Meeta Sharma · Faridabad, IN
• Madan Mohan Rai · Faridabad, IN
• Sobhan Ghosh · Faridabad, IN
• Akhilesh Kumar Bhatnagar · Faridabad, IN
• Prabhat Saxena · Pune, IN
• Swaminathan Sivaram · Pune, IN

Key dates

• Filing date: Apr 22, 1998
• Grant date: Jan 18, 2000
• Expiry date: Apr 22, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F210/16
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for the preparation of heterogeneous zirconium based catalyst for polymerization of alpha-olefins to super high molecular weight poly (alpha-olefins). The process comprises in mixing zirconium alcholate or phenolate with anhydrous magnesium chloride in the presence of a solvent. The mixture is heated, then cooled and an organoaluminum compound is added. Optionally, an electron donor compound is added and heated to obtain a black slurry, which is cooled and then washed with a hydrocarbon diluent.