Polyethers, process for their preparation and lubricants containing these polyethers

US4973414A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Dittmar Nerger · Krefeld, DE
• Karl-Heinz Hentschel · Krefeld, DE
• Christian Rasp · Cologne, DE
• Pramod Gupta · Bedburg, DE
• Siegfried Kussi · Leverkusen, DE

Key dates

• Filing date: May 17, 1988
• Grant date: Nov 27, 1990
• Expiry date: May 17, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/50
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Monofunctional polyethers having hydroxyl groups contain as built-in terminal groups or monomers PA1 (a) 1 to 30% by weight of one or more C.sub.4 - to C.sub.24 -alkylmonophenols, PA1 (b) 1 to 30% by weight of one or more C.sub.8 - to C.sub.24 -monoalkanols, PA1 (c) 1 to 30% by weight of one or more C.sub.10 - to C.sub.20 -1,2-epoxyalkanes and PA1 (d) 45 to 80% by weight of propylene oxide or a lower alkylene oxide mixture consisting mainly of propylene oxide the sum of components (a) to (d) adding up to 100% by weight, and have average molecular weights of 600 to 2,500. These polyethers are prepared by anionic epoxide polymerization and used as lubricants and components of lubricants.