Process for the preparation of cycloolefin polymers

US5087677A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Michael-Joachim Brekner · Frankfurt am Main, DE
• Jurgen Rohrmann · Kelkheim, DE
• Walter Spaleck · Bocholt, DE
• Martin Antberg · Frankfurt am Main, DE

Key dates

• Filing date: Jul 5, 1990
• Grant date: Feb 11, 1992
• Expiry date: Jul 5, 2010

Classification

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

Abstract

Polymers of polycyclic olefins of the formulae I to IV having a viscosity number greater than 20 cm.sup.3 /g and a glass transition temperature above 100.degree. C. are obtained without ring opening at a high polymerization rate and at polymerization temperatures advantageous from the technical point of view by means of a catalyst which is composed of a stereo-rigid, chiral metallocene compound of groups IVb to VIb of the Periodic Table of the Elements and an aluminoxane. ##STR1##