Abstract: The invention relates to an aqueous polyisobutene emulsion having: 1% wt. to 65% wt., based on the total weight of the emulsion, of polyisobutene, at maximum 5% wt., based on the total weight of the emulsion, of at least one surfactant, and optionally 1% wt. to 65% wt., based on the total weight of the emulsion, of at least one wax and/or oil, complemented with water to 100% wt. The average particle size of the polyisobutene emulsion is not greater than 100 ?m. The present invention also relates to the use of such an emulsion.

Abstract: The invention relates to an aqueous polyisobutene emulsion comprising: 1% wt. to 65% wt., based on the total weight of said emulsion, of polyisobutene, —at maximum 5% wt., based on the total weight of said emulsion, of at least one surfactant, and —optionally 1% wt. to 65% wt., based on the total weight of said emulsion, of at least one wax and/or oil, complemented with water to 100% wt., whereby the average particle size of said polyisobutene emulsion is not greater than 100 ?m. The present invention also relates to the use of such an emulsion.

Abstract: The invention relates to a method for preparing a stable and thin liquid polyisobutene emulsion comprising the steps of i) heating a polyisobutene polymer, optionally mixing said polyisobutene polymer with a wax and/or oil, thereby obtaining a pre-mix, ii) mixing said pre-mix in water containing one or more surfactants in a concentration of the surfactant of maximum 5% wt. at a controlled flow rate, which flow rate is sufficiently slow to form particles of the pre-mix, thereby obtaining a pre-emulsion, and iii) homogenizing said pre-emulsion, thereby obtaining said polyisobutene emulsion with an average particle size of at maximum 100 ?m.