Process for the preparation of propylene terpolymers and terpolymers obtained thereby

US9650458B2 · kind B2 · utility

Assignee

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

Inventors

• Monica Galvan · Ferrara, IT
• Andreas Neumann · Ferrara, IT
• Tiziana Caputo · Ferrara, IT
• Stefano Squarzoni · Ferrara, IT
• Antonio Mazzucco · Ferrara, IT
• Ofelia Fusco · Ferrara, IT
• Benedetta Gaddi · Ferrara, IT
• Gianni Collina · Cassana, IT
• Gisella Biondini · Portomaggiore, IT
• Claudio Cavalieri · Ferrara, IT
• Roberto Pantaleoni · Ferrara, IT

Key dates

• Filing date: Mar 3, 2014
• Grant date: May 16, 2017
• Expiry date: Mar 3, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F4/6543
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Propylene terpolymers are prepared by polymerizing propylene, ethylene and an alpha-olefin selected from the group of C4-C8 alpha-olefins in the presence of a catalyst system obtained by contacting a solid catalyst component comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and at least two electron donor compounds one of which being present in an amount from 40 to 90% by mol with respect to the total amount of donors and selected from succinates and the other selected from 1,3 diethers, an aluminum hydrocarbyl compound, and optionally an external electron donor compound.