Aluminum-containing additive for fuel oil compositions and method of preparing the same

Claim 1

A CORRSION INHIBITOR ADAPTED TO BE ADDED TO A FUEL OIL COMPOSITION CONTAINING SODIUM AND VANADIUM COMPOUNDS, SAID CORROSION INHIBITOR HAVING BEEN PREPARED BY A PROCESS WHICH CONSISTS ESSENTIALLY OF: (A) FORMING A SOLUTION OF ALUMINUM ALKOXIDE IN A VOLATILE HYDROCARBON SOLVENT WHEREIN THE ALKOXIDE RADICAL IS DERIVED FROM AN ANKANOL CONTAINING FROM 1 TO 8 CARBON ATOMS; (B) ADDING THE ALUMINUM ALKOXIDE SOLUTION TO A MIXTURE CONTAINING AN OLEAGINOUS LIQUID SELECTED FROM THE GROUP CONSISTING OF VEGETABLE, MINERAL LUBRICATING, AND SYNTHETIC OILS, AND OIL-SOLUBLE DISPERSING AGENT SELECTED FROM THE GROUP CONSISTING OF METAL ALKARYL SULFONATES, ALKARYL SULFONIC ACIDS, OIL-SOLUBLE METAL SOAPS OF CARBOXYLIC ACIDS AND CARBOXYLIC ACIDS CONTAINING AT LEAST 8 CARBON ATOMS, AND A QUANTITY OF WATER IN EXCESS OF THAT REQUIRED FOR THE HYDROLYSIS OF SAID ALUMINUM ALKOXIDE, THE AMOUNT OF ALUMINUM ALKOXIDE VARYING FROM ABOUT 11/2 TO 6 TIMES THAT REQUIRED TO REACT WITH THE ACID WHERE AN ACID IS USED AS DISPERSING AGENT AND 1/2 TO 5 TIMES THE NUMBER OF CHEMICAL EQUIVALENTS OF THE DISPERSING AGENT WHERE SAID DISPERSING AGENT IS SALT OF AN ACID; (C) CONDENSING FROM SAID MIXTURE OIL-INSOLUBLE ALUMINUM HYDROXIDE IN PARTICLES THE DIAMETER OF WHICH ARE LESS THAN 0.25 MICRON BY HEATING SAID MIXTURE WHEREBY SAID ALKOXIDE IS COMPLETELY HYDROLYZED, VOLATILE SOLVENTS AND WATER ARE REMOVED AND A UNIFORM MIXTURE IS OBTAINED.