Heterogeneous ziegler-natta catalyst system and a process for olefin polymerization using the same

• Main Authors: Patil Yogesh Popatrao, Bagui Mahuya, Sarma Krishna Renganath, Satpathy Uma Sankar, Jasra Raksh Vir, Gandham Satya Srinivasa Rao, Patel Jyotindra Bachubhai, Kadam Vijay Shivaji, Patel Viralkumar, Vakil Suketu, Mathur Ajit Behari, Sheth Mitul Sureshchandra
• Format: Patent
• Language: English
• Published: 06.02.2018
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The present disclosure provides a heterogeneous Ziegler-Natta catalyst system to be used in the preparation of ultra-high molecular weight polymers (UHMWP). The system includes at least one procatalyst, at least one co-catalyst, at least one hydrocarbon medium and at least one external donor, wherein the ratio of elemental magnesium to elemental titanium to halide, in the procatalyst, is 1:1.3:3.7; the ratio of elemental aluminum, present in the co-catalyst to elemental titanium, present in the procatalyst, ranges between 6:1 and 12:1; and the ratio of elemental silicon, present in the external donor to elemental titanium, present in the procatalyst, ranges between 1:10 and 10:1. The present disclosure also provides a process for preparation of UHMWPE using the heterogeneous Ziegler-Natta catalyst system of the present disclosure.