Emulsifiers from hydrocarbon polymer, maleic anhydride, and polyalkylene oxide glycol, emulsion containing same and methods for making thereof

Claim 1

AN EMULSIFICATION PROCESS WHICH COMPRISES AGITATING A HOMOGENEOUS SOLUTION OF A HYDROCARBON POLYMER IN A HYDROCARBON SOLVENT WITH WATER IN THE PRESENCE OF A MIXTURE OF EMULSIFIERS INCLUDING A POLYOXYETHYLATED OCTYL PHENOL CONTAINING 8 TO 10 ETHYLENE OXIDE UNITS AND THE EMULSIFIER COMPRISING THE REACTION PRODUCT OF (1) THE ADDUCT OF AN UNSATURATED HYDROCARBON POLYMER, PREPARED BY THE FRIEDEL-CRAFTS POLYMERIZATION OF A PETROLEUM STREAM BOILING BETWEEN ABOUT 20* AND 280*C., AND 0.1 TO 20 WEIGHT PERCENT, BASED ON SAID POLYMER, OF MALEIC ANHYDRIDE, AND (2) 0.1 TO 1.0 MOLE, PER ACID EQUIVALENT OF SAID ADDUCT, OF A POLYALKYLENE OXIDE GLYCOL CONTAINING MORE THAN 5 AND NO MORE THAN 25 ALKYLENE OXIDE UNITS OF 2 TO 3 CARBON ATOMS PER UNIT, TO FORM AN OIL-IN-WATER EMULSION WHEREIN THE PROPORTIONS BY WEIGHT OF THE EMULSIFIERS IN THE AFORESAID MIXTURE OF EMULSIFIERS IS IN THE RANGE OF 2:1 TO 1:2.