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1. 发明专利

GB920035A Process of manufacturing basic alkaline earth metal petroleum sulphonates 未知
公开(公告)号：GB920035A
公开(公告)日：1963-03-06
申请号：GB2492861
申请日：1961-07-10
申请人： LOBITOS OILFIELDS LTD , GLYN TATTUM
IPC分类号： C10M159/24
摘要： Oil solutions of basic alkaline earth metal petroleum sulphonates are obtained by sulphonating a petroleum lubricating oil, reacting the sulphonated oil with a basic ammonium-containing material to form an ammonium petroleum sulphonate, extracting the ammonium sulphonate from excess oil using water and a lower aliphatic alcohol which contains not more than 4 carbon atoms, evaporating the separated ammonium petroleum sulphonate solution and dissolving the sulphonate in a neutral petroleum lubricating oil, diluting the resulting solution with a volatile hydrocarbon solvent, mixing the solution with ammonium carbonate (i.e. a mixture of ammonium bicarbonate and carbamate), an alkaline earth metal oxide or hydroxide, and water, and allowing the mixture to react. The ammonium carbonate may be prepared in situ by the interaction of gaseous ammonia and carbon dioxide in the presence of water. The ammonium petroleum sulphonate may be obtained by neutralising with ammonium hydroxide the product obtained by treating a lubricating oil fraction of medium viscosity with sulphuric acid or sulphur trioxide. After extracting with, for example, about 40% aqueous isopropyl alcohol at 45 DEG C., the separated ammonium petroleum sulphonate solution is evaporated while adding a neutral lubricating oil such as refined heavy spindle oil. The resulting solution is diluted with a volatile hydrocarbon such as benzene, and reacted with ammonium carbonate, an alkaline earth metal oxide or hydroxide, and water, the reaction being accompanied by the evolution of ammonia gas. When reaction is complete, the mixture is preferably heated to about 150 DEG C. to drive off water and the hydrocarbon solvent, and the oil solution of the required sulphonate is then freed from insoluble solids. Alternatively, insoluble solids may be removed after first expelling water and ammonia from the reaction mixture by refluxing. In examples, a 36% solution of ammonium petroleum sulphonate in refined spindle oil is (1) diluted with toluene and reacted with ammonium carbonate, calcium hydroxide and water; (2) diluted with benzene together with the addition of water, and reacted with ammonia, carbon dioxide and lime; (3-6) diluted with benzene and reacted with ammonium carbonate, calcium hydroxide and water; (7) diluted with benzene and reacted with ammonium carbonate, barium oxide and water; (8) diluted with benzene and reacted with ammonium carbonate and barium hydroxide octahydrate. Specification 791,212 is referred to.

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