Catalyst components for the polymerization of olefins

US10125200B2 · kind B2 · utility

Assignee

• Basell Poliolefine Italia S.r.l. · IT

Inventors

• Gianni Collina · Cassana, IT
• Anna Fait · Ferrara, IT
• Ofelia Fusco · Ferrara, IT
• Giampiero Morini · Ferrara, IT
• Lorella Pedriali · Ferrara, IT
• Rosa Spoto · Ferrara, IT
• Paolo Vincenzi · Bondeno, IT

Key dates

• Filing date: Sep 17, 2009
• Grant date: Nov 13, 2018
• Expiry date: Aug 25, 2030

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J31/38
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Prepolymerized catalyst component for the polymerization of olefins CH2═CHR, wherein R is hydrogen or a C1-C12 hydrocarbyl group, comprising a solid catalyst component characterized by comprising Mg, Ti halogen and an electron donor (ID) selected from the alkyl esters of aromatic dicarboxylic acids in such an amount that the molar ratio ID/Mg ranges from 0.025 to 0.07 and the Mg/Ti molar ratio is higher than 13, said prepolymerized catalyst component containing an amount of ethylene pre-polymer up to 50 g per g of said solid catalyst component.