Process for basic sulfurized metal phenates

Claim 1

A PROCESS OF PREPARING SULFURIZED BASIC ALKALINE EARTH METAL CARBONATED ALKYL PENATE COMPRISING FORMING A BLEND COMPRISING A PETROLEUM LUBRICATING OIL, AN ALKYL PHENOL WHEREIN SAID ALKYL RADICAL HAS FROM 4 TO 30 CARBON ATOMS AND THTE TOTAL NUMBER OF CARBON ATOMS IN THE ALKYL GROUPS IS AT LEAST 8, AN ALKALINE EARTH MEAL ALKYL ARYL SULFONATE IN AN AMOUNT OF FROM 0.01 TO 1 MOL PER MOL OF SAID ALKYL PHENOL AND AN ALIPATIC SATURATED MONOHYDRIC ALCOHOL HAVING FROM 8 TO 18 CARBON ATOMS IN AN AMOUNT OF FROM 10 TO 75% BY WEIGHT OF SAID ALKYL PHENOL, HEATING SAID BLEND TO TEMPERATURES N THE RANGE OF 150*F. TO 190*F., ADDING THERETO A BASIC SUBSTANCE SELECTED FROM THE GROUP CONSISITNG OF ALKALINE EARTH METAL HYDROXIDE AND ALKALINE EARTH MEATAL OXIDE IN AMOUNT NECESARY TO GIVE A BASE RATIO OF FROM 1.2 TO 4.5 FOR SAID BASIC ALKALINE EARTH METAL CARBONATED ALKYL PHENATE, AND SULFUR IN AN AMOUNT SUCH TAHT THE MOL RATIO OF SULFUR TO BASIC SUBSTANCE HAS A VALUE FROM 0.25 TO 4, HEATING SAID BLEND TO TEMPERATURES IN THE RANGE OF 250*F. TO 300*F., AND AT THAT TEMPERATURE, ADDING UNHEATED ETHYLENE GLYCOL THERETO IN AMOUNT SUCH TAHT THE MOLE RATIO OF BASIC SUBSTANCE TO ETHYLENE GLYCOL IS FROM ABOUT 2:1 TO ABOUT 0.25:1, REMOVING THE RESULTING WATER OF REACTION BY HEATING TO TEMPERATURES OF ABOUT 340*F., WHILE MAINTAINING TEMEPRATURES NO LOWER THAN 250*F. ADDING CARBON DIOXIDE IN AMOUNT OF 10 MOL PERCENT TO 300 MOL PERCENT OF SAID ALKYL PHENOL, MAINTAINING THE TEMPERATURE OF THE REACTION MIXTURE AT TEMPERATURES OF 300*F. TO 390*F. AT REDUCED PRESSURE TO REMOVE ETHYLENE GLYCOL.