Polyolefin masterbatch and composition suitable for injection molding

US9309394B2 · kind B2 · utility

Assignee

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

Inventors

• Marco Ciarafoni · Ferrara, IT
• Paola Massari · Ferrara, IT
• Gisella Biondini · Portomaggiore, IT
• Roberto Pantaleoni · Ferrara, IT
• Sander Willems · Ferrara, IT

Key dates

• Filing date: Mar 19, 2010
• Grant date: Apr 12, 2016
• Expiry date: Jan 1, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2310/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A masterbatch composition comprising:70-90% wt of a component (A) being a propylene homopolymer or copolymer of propylene with ethylene or C4-C10 alpha olefins, having a MFRA according to ISO 1133 (230° C./2.16 Kg) ranging from 15 to 70 g/10 min; and10-30% wt of a component B) being a propylene-ethylene copolymer comprising 25-45% wt of ethylene derived units and having a value of the intrinsic viscosity [η] of the fraction soluble in xylene at room temperature ranging from 5 to 9 dl/g, said masterbatch composition having a total MFR higher than 4 g/10 min, and a value of the flexural modulus measured according to ISO method 178 ranging from 950 to 2000 MPa.