Composite absorbent for catalyst residues removal from polyolefin solution polymerization mixture

US8753535B2 · kind B2 · utility

Assignee

• Reliance Industries Ltd, Reliance Technology Group · IN

Inventors

• Prakash Kumar · Sayla, IN
• Manoj Srivastava · Rochester Hills, US
• Kalpana Gopalakrishnan · Vadodara, IN
• Vijay Kumar Kaushik · Sayla, IN
• Vijayalakshmi Ravi Puranik · Sayla, IN

Key dates

• Filing date: Jan 11, 2011
• Grant date: Jun 17, 2014
• Expiry date: Jul 16, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2220/42
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A solid shaped composite adsorbent for reducing deactivated catalyst residues and contaminants from a post polyolefin solution polymerization mixture is disclosed. The composite adsorbent comprises 70-90 wt % of an alumina component; 30-10 wt % of a clay component; and 0.5-3.5 wt % of at least one alkali metal component selected from the group consisting of elements in Group 1A of the modern periodic table.