| 摘要 |
An emulsifying agent according to formula (I) having a molecular weight of between 3000 and 10000: <IMAGE> (I) where A represents a terminal group for polyacrylates R1 represents an oleyl group containing up to 20 mol % stearyl groups: R2 is a residue with the formula -(CH2H4O)x(C3H160)y-CH3, where x is between 8 and 24 and y is between 0.75 and 2.25; l is between 1 and 3 is between 0.85 and 3.5; and n is between 0.12 and 0.5. A method of forming a reverse emulsion using this emulsifying agent. A heavy reverse emulsion, without solids comprising: 10 to 70% by volume of a dispersed brine phase having a density of between 1.20 and 2.77; 90 to 30% by volume of a continuous oil phase, and 15 to 60 g/liter of this emulsifying agent.
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