Use of acetals

US5759963A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Martin Hille · Liederbach, DE
• Heinz Wittkus · Frankfurt am Main, DE
• Bernd Windhausen · Brechen, DE
• Hans Scholz · Esslingen am Neckar, DE
• Frank Weinelt · Altötting, DE

Key dates

• Filing date: Sep 3, 1993
• Grant date: Jun 2, 1998
• Expiry date: Sep 3, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S507/905
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Acetals are used as a mineral oil substitute, oil component or base oil in invert-emulsion drilling muds, emulsion drilling muds, engine oils, gearbox oils, lubricating oils and also metal-working fluids, coolants, cooling lubricants and hydraulic fluids. As compared with conventional mineral oils, acetals show good biodegradability and are less toxic.