Prefoamed polyolefin beads produced by extrusion

US5744505A · kind A · utility

Assignee

• BASF SE

Inventors

• Joachim Fischer · Rodgau, DE
• Franz-Josef Dietzen · Haßloch, DE
• Gerd Ehrmann · Deidesheim, DE
• Isidoor De Grave · Monsheim, DE
• Jens Rieger · Forchheim, DE

Key dates

• Filing date: Apr 10, 1997
• Grant date: Apr 28, 1998
• Expiry date: Apr 10, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2323/06
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Prefoamed polyolefin beads, produced by extrusion followed by granulation, have a crystal structure with a double peak.