(under subclass 177) Processes wherein a mineral oil is treated to remove a metal or metal compound therefrom.
(1) Note. The metals or compounds thereof are contaminants which may have an effect of poisoning or rendering less active solid catalyst treating agents, e.g., platinum catalysts, and removal is necessary to prevent such effects.
(2) Note. Processes classified in this or indented subclasses are those wherein (1) the claims specify the removal of metal or metal compound or (2) the disclosure is limited to the removal of the metal or metal compound. See (2) Note to subclass 177.
SEE OR SEARCH THIS CLASS, SUBCLASS:
88+, for processes of removing metal contaminants from mineral oils combined with subsequent conversion of the refined oil whereby poisoning of the catalyst is prevented.
