Propylene copolymers

US11149101B2 · kind B2 · utility

Assignee

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

Inventors

• Paola Massari · Ferrara, IT
• Caroline Cathelin · Ferrara, IT
• Claudio Cavalieri · Ferrara, IT
• Marco Ciarafoni · Ferrara, IT
• Roberto Pantaleoni · Ferrara, IT
• Giampiero Morini · Ferrara, IT
• Gianni Vitale · Ferrara, IT
• Fabrizio Piemontesi · Ferrara, IT
• Gianni Collina · Cassana, IT
• Benedetta Gaddi · Ferrara, IT

Key dates

• Filing date: Jul 3, 2018
• Grant date: Oct 19, 2021
• Expiry date: Oct 23, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2323/14
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A propylene 1-hexene copolymer containing from 5.7 to 7.7% by weight of 1-hexene derived units, based upon the total weight of the propylene 1-hexene copolymer, having:a) a solubility in xylene at 25° C. ranging from 7.0 wt % to 15.0 wt %, based upon the total weight of the propylene 1-hexene copolymer;b) a melting temperature, measured by DSC ranging from 143.0° C. to 148.0° C.;c) a Melt Flow Rate (MFR, measured according to ASTM D 1238, 230° C./2.16 kg) from 3.5 to 8.0 g/10 min.; andd) a content of 1-hexene derived units in the fraction soluble in xylene at 25° C. ranging from 13.5 wt % to 18.5 wt %, based upon the total weight of the soluble fraction.