(under subclass 177) Processes wherein a mineral oil is treated to remove monoolefinic or polyolefinic components (gums or gum forming materials) therefrom.
(1) Note. The olefinic compounds polymerize into gums and both the resulting gum or the gum former, per se, constitute an undesirable component of the oil.
(2) Note. Processes classified in this or indented subclass are those in which (1) the claims specify the removal of gums or gum formers or (2) the disclosure is limited to the removal of such materials. See (2) Note to subclass 177.
SEE OR SEARCH CLASS
507, Earth Boring, Well Treating, and Oil Field Chemistry,
90, for compositions for preventing the formation of deposits in conduits carrying petroleum and processes involving the mere use of such compositions.
