Grease compositions containing complex alkaline earth metal salts

Claim 1

A GREASE COMPRISING AN OLEGINOUS LUBRICANT AND A GELLING AGENT IN AN AMOUNT SUFFICIENT TO THICKEN SAID VEHICLE TO FORM A GREASE, SAID GELLING AGENT BEING PREPARED BY THE STEPS OF: (1) REACTING ONE MOLAR PROPORTION OF PHOSPHORUS PENTOXIDE WITH FROM ABOUT ONE TO ABOUT THREE MOLAR PROPORTIONS OF AN ALKYL HYDROXYAROMATIC COMPOUND OF THE GENERAL FORMULA R-A-(OH)N WHEREIN R IS AN ALKYL GROUP CONTAINING FROM EIGHT TO FOURTEEN CARBON ATOMS, N IS A SMALL WHOLE NUMBER FROM ONE TO TWO, AND A IS AN AROMATIC NUCLEUS, TO FORM AN ACIDIC, PARTIAL ESTER OF PHOSPHORIC ACID, AND (2) FORMING A MIXTURE OF THE ADIDIC, PARTIAL ESTER OBTAINED BY STEP (1) AND A QUANTITY OF ACETIC ACID FROM ABOUT FIFTY PERCENT TO ABOUT ONE HUMDRED PERCENT EQUIVALENT TO SAID ACIDIC, PARTIAL ESTER ON THE BASIS OF NEUTRALIZING NUMBER, AD (3) REACTING THE MIXTURE FORMED IN STEP (2) WITH AN ALKALINE EARTH METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN OXIDE AND A HYDROXIDE, AT A TEMPERATURE BETWEEN ABOUT 400*F. AND ABOUT 500*F., THE AMOUNT OF SAID METAL COMPOUND BEING AT LEAST SUFFICIENT TO NEUTRALIZE THE ACETIC ACID AND THE ACIDIC, PARTIAL ESTER.