ADDITIVES FOR INCREASING THE SEPARATION YIELD OF TALL OIL SOAP FROM BLACK LIQUORS

摘要

METHODS OF INCREASING THE YIELD OF TALL OIL SOAP FROM A BLACK LIQUOR ARE PROVIDED. IN AN EMBODIMENT, THE METHOD COMPRISES ADDING A SEPARATION AID TO THE BLACK LIQUOR. THE SEPARATION AID COMPRISES ALKYL ALCOHOL ALKOXYLATES OF FORMULA RO[(CH₂CHCH₃O)X(CH₂CH₂O)y]M AND COMBINATIONS THEREOF, WHEREIN R IS STRAIGHT OR BRANCHED ALKYL OF ABOUT 8 TO ABOUT 22 CARBON ATOMS; X IS 1 TO ABOUT 20; Y IS ABOUT 20 TO ABOUT 80 AND M IS H OR AN ALKALI METAL.