Patent ID: 6987165
Filing Date: 2006-01-17
Classification: C08F

Abstract:
1. A process for the preparation of highly reactive polyisobutenes, in which a) isobutene is polymerized in the presence of a complex of boron trifluoride and at least one cocatalyst in a liquid organic phase at a reaction temperature of from −60 to −4° C., b) the organic phase which is substantially at the reaction temperature is brought into intimate contact with a first portion of water whose temperature is at least 80° C. above the reaction temperature, with formation of an emulsion which contains finely dispersed water droplets in the organic phase, c) a second portion of water is added to the emulsion with formation of a continuous, predominantly organic phase and a continuous, predominantly aqueous phase, and d) the organic phase is separated from the aqueous phase.