Polyolefinic compositions for injection-moulded drainage systems

US8962763B2 · kind B2 · utility

Assignee

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

Inventors

• Claudio Cavalieri · Ferrara, IT
• Monica Galvan · Ferrara, IT
• Roberto Pantaleoni · Ferrara, IT
• Enrico Beccarini · Ferrara, IT
• Francesca Tisi · Castellarano, IT
• Werner Rothhöft · Liederbach am Taunus, DE

Key dates

• Filing date: Dec 14, 2010
• Grant date: Feb 24, 2015
• Expiry date: Jul 9, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/03
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A polypropylene composition for injection-molded drainage systems comprising 78-84 wt % of a crystalline propylene polymer, 8 to less than 13 wt % of an elastomeric copolymer and 8 to less than 13 wt % of polyethylene. The said composition exhibits a flexural modulus value higher than 1400 MPa, a melt flow rate (MFR), determined according to ISO method 1133 (230° C. and 2.16 kg), of from 1.5 to 5.0 g/10 min, and a value of Izod impact resistance at 0° C. of more than 6 kJ/m2 according to ISO method 180/1A.