Abstract
Isomax process has wide scoke of utilization in oil refining processes. The author explains the pesent status and future aspect of all hydro-cracking processes centering upon the isomax one, e. g., he describes the applicable aim of the isomax process and advances in catalyst, then trends in the hydro-cracking equipment in both free world and this country, relation between hydro-and catalytic-cracking processes, and considers the hydro-cracking to be applied in Japan's petroleum refining programs in near future.
