Process for the preparation of polyethylenes

US5268440A · kind A · utility

Assignee

• Peroxid-Chemie GmbH · DE

Inventors

• Gerhard Luft · Mühltal, DE
• Maiximilian Dron · Pullach, DE
• Norbert Fischer · Lichtenberg, DE

Key dates

• Filing date: May 27, 1992
• Grant date: Dec 7, 1993
• Expiry date: May 27, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F10/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

For the preparation of polyethylenes using a diphenyl ethane derivative as C-C labile polymerization initiator, 1 to 40 mole 3,4-dimethyl-3,4-diphenyl hexane, based on 1 million mole ethylene used, are polymerized at 260.degree. to 400.degree. C. at a pressure of 60,000 to 350,000 kgfa.