Oil-in-water emulsions
AssigneesQuadrise International Limited, Nouryon Chemicals International B.V.
InventorsSimon Craige, Jason Victor Miles, Dennis Selse, Joakim Krigsman
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Abstract
The invention relates to an oil-in-water emulsion comprising an oil phase and an aqueous phase, and a primary surfactant, wherein the oil phase is dispersed in the aqueous phase, and wherein the oil-in-water emulsion has: an average droplet size distribution (D[4,3]) in the range of from 3 to 15 um and less than 3 wt % of the droplets have a particle size of greater than 125 um; a viscosity of greater than 100 and up to 700 mPas at 50° C.+−10% and 20 s−1+−10%; and a static stability of less than 5% residue after centrifugation at 50° C.+−10% and 2000 g=10% for 30 minutes+−10%.
Claims14
An oil-in-water emulsion for use as a fuel comprising an oil phase and an aqueous phase, at least one primary surfactant selected from the group consisting of fatty alkyl amines, ethoxylated fatty alkylamines, ethoxylated fatty alkyl monoamines, methylated fatty alkyl monoamines, methylated fatty alkyl amines, and quaternary fatty alkyl amines;
- greater than 0.3 and up to 2.0 wt % of secondary surfactant selected from one or more lignin amines;
- and one or more organic acids;
- wherein the oil phase is dispersed in the aqueous phase, and wherein the oil-in-water emulsion has the following characteristics:
- an average droplet size (D[4,3]) in the range of from 3 to 15 μm, wherein the average droplet size is expressed as the Volume Moment Mean and is measured using light scattering techniques;
- less than 3 wt % of the droplets have a particle size of greater than 125 μm, wherein droplet size is measured using light scattering techniques;
- and
- a viscosity of greater than 100 and up to 700 mPas at 50° C.±10% and 20 s−1±10%, wherein viscosity is measured on a Malvern Kinexus™ instrument.
Dependencies are inferred from the claim text.