Lubricant additive of high metal content

Claim 1

IN THE PREPARING OF A BARIUM CONTAINING, OIL SOLUBLE LUBRICANT ADDITIVE WHEREIN A BUTYLENE POLYMER IS REACTED WITH FROM ABOUT 1% TO ABOUT 50% OF A PHOSPHOROUS SULFIDE AT A TEMPERATURE OF FROM 200* F. TO ABOUT 600* F. AND THE RESULTANT REACTION PRODUCT HYDROLYZED AT A TEMPERATURE OF FROM ABOUT 220* F. TO ABOUT 500* F., AND THEN EXTRACTED AT A TEMPERATURE OF FROM ABOUT 100* F. TO ABOUT 212* F. WITH FROM ABOUT 10% TO ABOUT 200% BY VOLUME OF A MIXTURE CONSISTING OF WATER AND FROM ABOUT 5% TO ABOUT 95% BY VOLUME OF HYDROXY COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHENYL AND ALKYL ALCOHOLS HAVING FROM ONE TO FIVE CARBON ATOMS, AND THE EXTRACTES REACTION PRODUCT NEUTRALIZED WITH A BASIC BARIUM COMPOUND, THE IMPROVEMENT COMPRISING NEUTRALIZING AID EXTRACTED REACTION PRODUCT BY PREPARING A REACTION MIXTURE OF SAID EXTRACTED REACTION PRODUCT, BARIUM HYDROXIDE, PHENOL AND WATER IN HYDROCARBON OIL DILUENT, THE BARIUM HYDROXID BEING PRESENT IN THE RANGE OF FROM ABOUT 1 TO ABOUT 10 TIMES THE AMOUNT NECESSARY TO NEUTRALIZE SAID EXTRACTED REACTION PRODUCT, THE PHENOL BEING PRESENT IN SUFFICIENT AMOUNT TO MAINTAIN THE REACTION MIXTURE ACIDIC WATER CONTENT BEING IN THE RANGE OF FROM ABOUT 2% TO ABOUT 10% BASED ON THE TOTAL WEIGHT OF REACTION MIXTURE, GRADUALLY HEATING THE MIXTURE TO ABOUT 400* F. WHILE INTRODUCING CO2 THERETO IN EXCESS OF AMOUNTS WHICH CAN BE ABSORBED AND STEAMING THE MIXTURE AND THEN FILTERING THE PRODUCT TO OBTAIN A BRIGHT HIGH BARIUM CONTAINING ADDITIVE HAVING A LOW VICOSITY.