Process for the reprocessing of used lubricating oils (II)

US4252637A · kind A · utility

Assignee

• Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler

Inventors

• Helmut Knorre · Seligenstadt, DE
• Manfred Langer · Hanau, DE
• Axel Waniorek · Rodenbach, DE

Key dates

• Filing date: Apr 18, 1979
• Grant date: Feb 24, 1981
• Expiry date: Apr 18, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for the reprocessing of used lubricating oil wherein said oils are treated with a mixture of potassium hydroxide and sodium hydroxide.