Patent GB-661003-A (GB)
Title: Additive oils for hydrocarbons
IPC: C07F9/08
Filed: 1948-07-14
Abstract: An additive agent for hydrocarbon oils, particularly lubricating oils and fuels for internal combustion engines, comprises the reaction product of an anionic surface-active organic phosphorus compound of the general formula Na5R5(P3O10)2, in which R stands for a hydrocarbon chain having from six to ten carbon atoms and with or without side chains, with an organic sulphonate or sulphate of an aliphatic compound having from 11 to 20 carbon atoms.  An alkali metal salt of the organic sulphate or sulphonate, e.g. the sodium salt, may be used.  Examples of the organic sulphonates which may be used are the sodium salt of a sulphonated dioctyl succinic acid and other double esters of a sulphonated succinic or dibasic acid. Suitable sulphates are 7-ethyl-2-methyl-4-undecanol sodium sulphate, 3 : 9-diethyl-6-tridecanol sodium sulphate and 2 : 8-diethyl-tridecanol sodium sulphate.  The additive acts as a detergent keeping the crank case, oil ducts and fuel lines clean and free from deposits.  In the examples: (a) the sodium salt of the dioctyl ester of sulphonated dioctyl succinic acid and a phosphate of the formula <FORM:0661003/IV (b)/1> are mixed with water and heated until the mixture thickens; a light oil such as kerosene or Stoddard solvent is added and the mixture is heated until the water is evaporated and the temperature is raised to about 130 DEG  C., some SAE 10 oil is added and temperature is raised to 150 DEG  C., the resulting mixture then being filtered to give a clear solution; (b) the phosphate used in previous example and 7-ethyl-2-methyl-4-undecanol sodium sulphate are heated with water and the mixture is treated as in the previous example.  The clear solution obtained in each case is added to motor fuels or oils.ALSO:An additive agent for hydrocarbon oils, particularly lubricating oils and fuels for internal combustion engines, comprises the reaction product of an anionic surface active organic phosphorus compound of the general formula Na5R5 (P3O10)2 in which R stands for a hydrocarbon chain having from six to ten carbon atoms and with or without side chains, with an organic sulphonate or sulphate of an aliphatic compound having from 11 to 20 carbon atoms.  An alkali metal salt of the organic sulphate or sulphonate, e.g. the sodium salt may be used.  Examples of suitable sulphonates are the sodium salts of a sulphonated dioctyl succinic acid and other double esters of a sulphonated succinic or dibasic acid. Suitable sulphates are 7-ethyl-2 methyl-4 undecanol sodium sulphate, 3-9-diethyl-6-tridecanol sodium sulphate and 2-8-diethyl tridecanol sodium sulphate.  The additive acts as a detergent keeping the crank cases, oil ducts and fuel lines clean and free from deposits.  In the examples (a) the sodium salt of the dioctyl ester of sulphonated dioctyl succinic acid and a phosphate of the formula <FORM:0661003/III/1> are mixed with water and heated until the mixture thickens; a light oil such as kerosene or Stoddard solvent is added and the mixture heated until the water is evaporated and the temperature is raised to about 130 DEG C.; some SAE 10 oil is added and the temperature is raised to 150 DEG  the resulting mixture then being filtered to give a clear solution; (b) the phosphate used in the previous example and 7-ethyl-2-methyl-4 undcanol sodium sulphate are heated with water and the mixture is treated as in the previous example.  The clear solution in each case is added to motor fuels or oils.