Method of polymerizing isoolefin

Abstract

Abstract A METHOD FOR PRODUCING ISOOLEFIN HOMOPOLYMERS OR COPOLYMERS IS PROVIDED HEREIN, WHICH COMPRISES POLYMERIZING OR COPOLYMERIZING AN ISOOLEFIN, MIXTURES THEREOF, OR A MIXTURE OF AN ISOOLEFIN AND MULTIOLEFIN COPOLYMERIZABLE WITH AN ISOOLEFIN IN THE PRESENCE OF A CATALYST SYSTEM COMPRISING (1) AN ALUMINUM-METAL OXIDE-ALKOXIDE COMPOUND REPRESENTED BY THE GENERAL FORMULA, M(OA)(OR)2)2 WHEREIN M IS A DIVALENT METAL ATOM, R IS AN ALKYL RADICAL HAVING FROM 1 TO 8 CARBON ATOMS, AN ARYL RADICAL HAVING FROM 6 TO 10 CARBON ATOMS, AN ARALKYL RADICAL HAVING FROM 7 TO 12 CARBON ATOMS, A CYCLOALKYL RADICAL HAVING FROM 6 TO 10 CARBON ATOMS, OR A HALOGENATED SUBSTITUENT THEREOF, AND WHEREIN R IS THE SAME OR A DIFFERENT RADICAL, AND (2) BORON TRIFLUORIDE. THE PRESENT INVENTION IS ALSO DIRECTED TO THE ABOVE ATALYST SYSTEM, PER SE, USEFUL FOR PRODUCING ISOOLEFIN POLYMERS. BY THE USE OF THE ABOVE CATALYST, IT IS POSSIBLE TO PRODUCE ISOOLEFIN POLYMERS AT HIGHER TEMPERATURES THAN POSSIBLE WITH PREVIOUSLY KNOWN CATALYST SYSTEMS.

Inventors

• 👤 S Matsushima

Bibliographic Details