Random propylene-ethylene copolymers and process for their preparation

US9676883B2 · kind B2 · utility

Assignee

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

Inventors

• Fabrizio Piemontesi · Ferrara, IT
• Caroline Cathelin · Ferrara, IT
• Simona Guidotti · Ferrara, IT
• Dario Liguori · Ferrara, IT
• Giampiero Morini · Ferrara, IT
• Davide Tartari · Ferrara, IT
• Gianni Vitale · Ferrara, IT

Key dates

• Filing date: May 6, 2015
• Grant date: Jun 13, 2017
• Expiry date: May 6, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F210/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present disclosure relates to propylene-ethylene copolymers comprising an ethylene content of 0.1-10% by weight, a molecular weight distribution (MWD), expressed in terms of Mw/Mn, of greater than 3.0 and a xylene soluble (XS) fraction content defined by values that fall below the line given by the equation XS=1.0296·e0.435C2. The propylene-ethylene copolymers advantageously exhibit high transparency and low melting temperatures.