METHOD FOR PRODUCING EMULSIONS AND AQUEOUS POLYISOBUTENE EMULSION

摘要

The current invention concerns a method for preparing a polyisobutene (PiB) in water emulsion characterized by the steps :;- combining a number of separate fluid streams of PiB and water with formation of alternating fluid lamellae of PiB and water,;- focusing the alternating fluid lamellae of PiB and water with formation of a focused total fluid stream,;- gradually tapering the cross-flow section of said focused total fluid stream in the direction of the flow in a manner that decays said alternating polyisobutene and water fluid lamellae.;The current invention relates to a method for producing dispersions. The current invention also concerns the emulsions produced by said method. The current method also relates to polymer emulsions, particularly polyisobutene emulsions with a high content of polyisobutene.;The current method also relates to a method for reducing the average droplet diameter of an emulsion, comprising the steps :;- providing an emulsion, comprising droplets of a dispersed phase within a continuous phase, characterized by an average droplet diameter and a viscosity ratio of the dispersed phase to said continuous phase of at least 4.0, and;- reducing said average droplet diameter by forcing said emulsion through a gradually tapered cross-flow section of in the direction of the flow in a manner that decays said alternating polyisobutene and water fluid lamellae.