Distyrenated alkyl aromatic hydrocarbon as lubricant

Claim 1

IN THE LUBRICATION OF JET ENGINES AND ROCKETS, THE IMPROVEMENT THAT COMPRISES LUBRICATING RELATIVELY MOVING PARTS OF SAID JET ENGINES AND ROCKETS WITH TEH DISTYRENATED REACTION PRODUCT OBTAINED BY REACTING STYRENE REACTANT WITH AN ALKYL AROMATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF ALKYLBENZENES HAVING BETWEEN 1 AND 18 CARBON ATOMS PER ALKYL GROUP AND ALKYLNAPHTHALENES HAVING BETWEEN 1 AND 18 CARBON ATOMS PER ALKYL GROUP, SAID ALKYL AROMATIC HYDROCARBON HAVING 1-3 ALKYL GROUPS, IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF AN ACID-TREATED BENTONITE NON-SWELLING MONTMORILLONITE CLAY AND SYNTHETIC SILCA-ALUMINA CONTAINING BETWEEN ABOUT 7 PERCENT AND ABOUT 15 PERCENT ALUMINA BY WEIGHT, AT A TEMPERATURE VARYING BETWEEN ABOUT 80*C. AND ABOUT 150*C.; THE MOLAR RATIO OF SAID ALKYL AROMATIC HYDROCARBON TO SAID STYRENE REACTANT BEING BETWEEN ABOUT 1:1 AND ABOUT 1.5:1 AND THE AMOUNT OF SAID CATALYST BEING BETWEEN ABOUT 0.7 PERCENT AND ABOUT 5 PERCENT OF THE WEIGHT OF THE TOTAL REACTANTS.