Gulf Research & Development Company

William A Kofke

Johann G Schulz

Anatoli Onopchenko

Ilia Milson

Spent filter clay used in the removal of contaminating organic polar-type compounds from petroleum distillates is regenerated by flushing the spent filter clay with liquid methanol and recovering and recycling the contaminated wash methanol without distillation through the filter for additional flushing of the contaminants from the clay.

Regeneration of filter clay with liquid methanol

Novel insulating oil compositions comprising a major amount of an insulating oil and a minor amount of a product obtained as a result of a process which comprises reacting benzene with ethylene in the presence of an alkylation catalyst to obtain a reaction mixture containing largely unreacted benzene, ethylbenzene, polyethylbenzenes, 1,1-diphenylethane and heavier material, separating at least benzene, ethylbenzene and polyethylbenzenes from said reaction mixture and thereafter recovering from said heavier material a fraction whose boiling points fall within a temperature range of about 255.degree. to about 420.degree. C. as said product.

Insulating oil compositions containing a fraction derived from the

Novel insulating oil compositions comprising a major amount of an insulating oil and a minor amount of a diarylalkane.

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Irwin, PA, United States of America

William A Kofke