Multiphase block of propylene, comprising copolymers of propylene

US5753773A · kind A · utility

Assignee

• BASF SE

Inventors

• Franz Langhauser · Bad Dürkheim, DE
• Juergen Kerth · Eisenberg (Pfalz), DE
• Patrik Mueller · Kaiserslautern, DE
• Meinolf Kersting · Neustadt, DE
• Guenther Schweier · Friedelsheim, DE

Key dates

• Filing date: Nov 9, 1995
• Grant date: May 19, 1998
• Expiry date: Nov 9, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S526/943
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Multiphase block copolymers of propylene comprising PA1 a) a polymer of propylene with from 0 to 5% by weight of further C.sub.2 -C.sub.10 1-alkenes, PA1 b) a copolymer of propylene with from 5 to 98% by weight of further C.sub.2 -C.sub.10 1-alkenes, the multiphase block copolymers having a melting point of less than 155.degree. C. and a stiffness (shear modulus G) conforming to the following condition (I): ##EQU1## where M.sub.a) denotes the amount of propylene polymer a) and M.sub.co denotes the amount of the multiphase block copolymer. are obtainable in particular by polymerization by means of metallocene-containing catalyst systems.