Process for the preparation of a polyolefin, and a catalyst for this process

US4447587A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Joachim Berthold · Prien am Chiemsee, DE
• Bernd Diedrich · Eschborn, DE
• Rainer Franke · Frankfurt am Main, DE
• Jurgen Hartlapp · Hattersheim, DE
• Werner Schafer · Essen, DE
• Wolfgang Strobel · Tolland, US

Key dates

• Filing date: Jun 14, 1982
• Grant date: May 8, 1984
• Expiry date: Jun 14, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F10/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyolefins having a broad molecular weight distribution are obtained in a very high yield even using, as the catalyst, a product from the reaction of a magnesium alcoholate with titanium tetrachloride, if the reaction between the magnesium alcoholate and the titanium tetrachloride is carried out at a relatively low temperature and the reaction mixture is then heated to a fairly high temperature in order to split off alkyl chlorides.