Process for the preparation of liquids of low inflammability and high viscosity index and the use thereof

US4490266A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Karl-Heinz Hentschel · Krefeld, DE
• Bernhard Mussig · Seevetal, DE
• Rolf Dhein · Krefeld, DE
• Siegfried Kussi · Leverkusen, DE

Key dates

• Filing date: May 24, 1983
• Grant date: Dec 25, 1984
• Expiry date: May 24, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/08
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A composition comprising 96-99.9% by weight of a highly flame-resistant base oil such as an aromatic phosphate ester or a polychlorinated aromatic compound and a polyester of molecular weight, 20,000 to 300,000, derived from polytetramethylene glycol, for instance. The composition has an improved viscosity index and is especially useful as a HSD lubricant. It is also useful as a hydraulic fluid and/or heat transfer liquid. By addition of such a polyester to such base oil, the viscosity index of the base oil is considerably improved.