Method for the preparation of stable emulsions of polyisobutene
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United States of America Patent
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Apr 11, 2017
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Jul 15, 2013
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Jul 16, 2012
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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 μm.
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