Patent ID: 9617443
Date: 2017-04-11
CPC Classifications: C08J,C08K,C08L,C09D

Claim:
1. A method for preparing a polyisobutene emulsion comprising the steps of: heating a medium and/or high molecular weight polyisobutene polymer, optionally mixing said polyisobutene polymer with a wax and/or oil, thereby obtaining a pre-mix, mixing said pre-mix in water comprising one or more surfactants in a concentration of said one or more surfactants of at maximum 5% wt. to a polyisobutene polymer concentration of between 25% wt. and 65% 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 homogenising said pre-emulsion, thereby obtaining said polyisobutene emulsion with an average particle size of at maximum 100 μm.