Lubricating grease composition

US6063743A · kind A · utility

Assignee

• Kluber Lubrication Munchen SE & Co. KG · DE

Inventors

• Edwin Seubert · Hersbruck, DE
• Dieter Sohn · Germering, DE

Key dates

• Filing date: Dec 18, 1992
• Grant date: May 16, 2000
• Expiry date: Dec 18, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10M2217/043
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A lubricating grease compound formed of a basic oil and a lower proportion of a thickening agent which is a polyurea (polycarbamide) compound as well as the usual additives, in which the base oil is an ester of an aromatic di-, tri-, or tetra-carboxylic acid with one or more C.sub.7 -C.sub.18 -alkanols and the thickening agent is the reaction product of a compound of the general formula EQU A(B)n (I) with an amine of the general formula H.sub.2 N--R (II), wherein PA1 A=CH.sub.4 -n, PA1 B=aromatic mono- or di-isocyanate residue, PA1 n=1-3, and PA1 R=an alkyl or an alkenyl residue with 8 to 22-C-atoms or an aryl residue with 6 to 10-C-atoms, and in which the mixture of the basic oil and the thickening agent has a consistency with a penetration of 220-385, 0.1 mm.