A process for producing a high VI/low volatility lubricating oil basestock and a lubricating oil basestock prepared by said process. The process comprises subjecting the raffinate from a solvent extraction step to a two step, single stage hydroconversion process wherein the first step involves severe...http://www.google.es/patents/US6592748?utm_source=gb-gplus-sharePatente US6592748 - Reffinate hydroconversion process
