| 摘要 |
1,205,235. Emulsifying agents. IMPERIAL CHEMICAL INDUSTRIES Ltd. 18 April, 1968 [3 May, 1967], No. 20589/67. Heading B1V. [Also in Division C1] An oil-soluble but substantially water-insoluble condensation product of from 1.5 to 6.0, preferably from 2.0 to 4.0, molecular proportions of ethylene oxide with one molecular proportion of an aliphatic alcohol having from 11 to 20 carbon atoms or of a mixture of aliphatic alcohols each having from 11 to 20 carbon atoms is used as an emulsifying agent in a process for the emulsification of oil on an expanse of water. Examples of suitable alcohols, which alcohols may be saturated or unsaturated, are cetyl, oleyl, lauryl, myristyl and stearyl alcohols, a mixture of cetyl and oleyl alcohols being preferred; a preferred emulsifying agent is the condensation product of 3.5 molecular proportions of ethylene oxide with one molecular proportion of a mixture of cetyl alcohol and oleyl alcohol. The emulsifying agent may be added to the water and oil either as such or as a solution in a solvent therefor, for example solvent naphtha, xylene or a light oil distillate. The mixture of water, oil and emulsifying agent may be subjected to mechanical agitation to increase the rate of emulsification. Examples of oils which may be emulsified are crude unrefined natural petroleum oil and any of the mainly involatile refined derivatives thereof, for example lubricating oils, diesel oil and gas oil.
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