(under subclass 177) Processes for removing undesirable organic acids or phenolic components from mineral oils.
(1) Note. Organic acids such as fatty and naphthenic acids tend to form soaps during refining and these soaps form undesirable emulsions, hence the necessity for removing the same from the oil. Also some of these acidic materials tend to cause the oil to be corrosive unless removed.
(2) Note. Processes classified in this subclass are those in which (1) the claims specify the removal of organic acid or phenol components or (2) the disclosure is limited to the removal of such components.
SEE OR SEARCH THIS CLASS, SUBCLASS:
47, for processes including a conversion of a mineral oil combined with some step to prevent corrosion or erosion of the apparatus employed.
SEE OR SEARCH CLASS
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 113+, for compositions for or subcombination compositions for or breaking of or inhibiting of colloid systems (e.g., foam breaking, emulsion breaking, dispersion inhibiting, suspension settling, gel breaking, smoke suppressing, coagulating, flocculating), when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art. Combinations of emulsion breaking and a treatment of the mineral oil provided for in Class 208 are classified in Class 208.
