A process for the refining of mineral lubricating oils with the aid of a selective solvent extracted from cracking products

摘要

541,878. Refining lubricating oils. STEAUA ROMANA SOC. ANON. PENTRU INDUSTRIA PETROLEULUI. May 10, 1940, No. 8486. Convention date, May 12, 1939. [Class 91] The material produced according to Specification 541,877 which consists of hydrocarbons, organic acid substances and phenolic substances including all three cresols, ethyl phenols and other higher phenols together with organic sulphur containing compounds is used as a selective solvent for refining mineral lubricating oils. Specification 541,876 also is referred to.