Abstract: The present invention provides a novel class of compounds, useful as gasoline detergent additives, which is a polyether hydroxyethylaminoethyl oxalamide represented by the formula ##STR1## where R is a (C.sub.5 -C.sub.25) alkyl group and n is an integer between about 5 and about 20.

Abstract: A process for disposing of sanitary sewage sludge by producing a pumpable slurry of sewage sludge with or without solid carbonaceous fuel and burning said slurry as fuel in a partial oxidation gas generator, furnace, or boiler. The aqueous slurry of sewage sludge is concentrated by removing water by means of a conventional belt filter press, centrifuge, or hydroclone. The dewatered slurry of sewage sludge is preheated and sheared; hydrothermally treated; and its solids content increased. A chelating agent, for example an aminopolycarboxylic acid or a hydrocarboxylic acid is mixed with the aqueous slurry of sewage sludge during the preheating and shearing step and/or the step for increasing its solids content. By means of the subject process, the viscosity of the slurry of sewage sludge with or without solid carbonaceous fuel is reduced and coagulation is suppressed.

Abstract: A method for preparing a high-solids concentration low rank coal slurry by dehydrating the coal, treating the dehydrated coal with a rehydrating inhibitor such as a (C.sub.3 -C.sub.12) straight chain hydrocarbon, and adding a surfactant to the treated coal, whereby the concentration of the solids is increased from about 5 to about 20 wt. %.

Abstract: Water is separated from methyl isobutyl ketone by pervaporation across a polyvinyl alcohol membrane.

Abstract: Fuel oils and lubricants of improved properties contain ethylene-propylene copolymers bearing units derived from N-vinyl pyrrolidone and phenothiazine.