Method for the polymerization of isoolefin
Abstract
Abstract A METHOD FOR PRODUCING ISOOLEFIN HOMOPOLYMERS OR COPOLYMERS IS PROVIDED HEREIN, WHICH COMPRISES PLYMERIZING OR COPLYMERIZING AN ISOOLEFIN, A MIXTURE THEREOF, OR A MIXTURE OF AN ISOOLEFIN AND DIOLEFIN COPOLYMERIZABLE THEREWITH IN THE PRESENCE OF A CATALYST SYSTEM COMPRISING (1) A METAL ORGANIC AMIDE REPRESENTED BY THE GENERAL FORMULA, M(NR2)MXN, WHEREIN M IS A METAL ATOM, M+N IS THE VALENCE OF THE METAL ATOM, R IS AN ALKYL RADICAL HAVING FROM 1 TO 12 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, SUBSTITUTED THEREOF, AND R''S MAY BE THE SAME OR DIFFERENT, AND X IS A HALOGEN ATOM, AND (2) BORON TRIFLUORIDE. THE PRESENT INVENTION IS ALSO DIRECTED TO THE ABOVE-DEFINED CATALYST COMBINATION, PER SE, USEFUL FOR PRODUCING ISOOLEFIN POLYMERS. BY THE USE OF THE ABOVE CATALYST SYSTEM IT IS POSSIBLE TO PRODUCE ISOOLEFIN POLYMERS HAVING A HIGH DEGREE OF POLYMERIZATION AT COMPARATIVELY HIGHER TEMPERATURES THAN CONVENTIONAL CATALYST SYSTEMS.
Inventors
- 👤 S Matsushima
- 👤 K Ueno
Bibliographic Details
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