OIL-IN-WATER EMULSIONS

专利名称：OIL-IN-WATER EMULSIONS

发明人：CRAIGE, Simon,MILES, Jason Victor,SELSE,

Dennis,KRIGSMAN, Joakim

申请号：EP16801006.4申请日：20161103公开号：EP3365415B1公开日：20190904

摘要：The invention relates to an oil-in-water emulsion comprising an oil phase and anaqueous phase, and a primary surfactant, wherein the oil phase is dispersed in theaqueous phase, and wherein the oil-in-water emulsion has: an average droplet sizedistribution (D[4,3]) in the range of from 3 to 15 μm and less than 3 wt % of the dropletshave a particle size of greater than 125 μm; a viscosity of greater than 100 and up to 700mPas at 50° C.±10% and 20 s−1±10%; and a static stability of less than 5% residue aftercentrifugation at 50° C.±10% and 2000 g=10% for 30 minutes±10%. A process forpreparing such an oil-in-water emulsion comprises preparing an aqueous phasecomprising a primary surfactant, heating a hydrocarbon-containing oil-phase, andblending the hydrocarbon-containing oil and the aqueous phase under conditionssufficient to form an oil-in-water emulsion. The invention also relates to methods fordetermining the static and dynamic stability of oil-in-water emulsions. Static stability canbe determined by a method comprising the steps of: providing an oil-in-water emulsion;centrifuging the oil-in-water emulsion under predetermined conditions for a

predetermined period of time; determining the amount of residue deposited from theoil-in-water emulsion after the predetermined period of time; and determining the oil-in-

water emulsion's static stability. A method for determining the dynamic stability of an oil-in-water emulsion comprises the steps of: providing an oil-in-water emulsion; analysingthe oil-in-water emulsion at a first time; recirculating the oil-in-water emulsion in arecirculation loop; and analysing the oil-in-water emulsion at second time afterrecirculation has started; in which the oil-in-water emulsion's dynamic stability isdetermined based on the analysis at the first and second times.

代理机构：Hodge, Emma Jane

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