Oil-in-water emulsions

An oil-in-water emulsion comprising an oil phase;

• an aqueous phase;
• from 0.05 to 0.6 wt % of a cationic primary surfactant;
• and from 0.03 to 0.25 wt % of a polymeric stabiliser, wherein the polymeric stabiliser comprises one or more cationic polymers comprising at least one cationic monomer selected from the group of dialkylaminoalkyl acrylate or dialkylaminoalkyl methacrylate quaternary salts, or dialkylaminoalkylacrylamides or methacrylamides and their quaternary salts;
• wherein the oil-in-water emulsion comprises one or more cationic primary surfactants of which at least one is 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;
• wherein the oil phase is dispersed in the aqueous phase;
• wherein the oil phase is substantially free from entrained bubbles or pockets of gas;
• 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;
• a dynamic viscosity of greater than 50 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%.