Phosphoric esters as extreme pressure additives

US6103675A · kind A · utility

Assignee

• Clariant Corporation · DE

Inventors

• Peter Pyka · Augsburg, DE
• Barbara Vollnhals · Gersthofen, DE
• Bernd Pomrehn · Dietenhofen, DE

Key dates

• Filing date: Mar 11, 1998
• Grant date: Aug 15, 2000
• Expiry date: Mar 11, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/22
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to the use of mixtures of one or more phosphoric esters of the formula (I) with one or more amines of the formula (II) as extreme pressure additives in water-immiscible cooling lubricants ##STR1## in which the substituents have the meaning defined in the description.