Verfahren zur Herstellung von Schmiermittel-Additiven, die Selbstdispergierende Ceroxid-Nanopartikel Enthalten

Details

Veröffentlichungs-Nr.

EP2489637

Aktenzeichen

EP12155552

Anmeldetag

15. Februar 2012

Veröffentlichung

14. Februar 2018

Erteilung

14. Februar 2018

Rechtsraum

EP

IPC

C01F17/00C10M159/18B82Y30/00

Abstract

A method for making a self-dispersing cerium oxide nanoparticles additive for lubricants, a lubricant composition containing the nanoparticles and a method for reducing boundary friction using the nanoparticles. The nanoparticles are made by an improved process of reacting a mixture of organo-cerium salt, fatty acid, and amine in the substantial absence of water and organic solvent at a temperature ranging from about 150° to about 250° C., the improvement comprising reacting the organo-cerium salt, fatty acid and amine in a molar ratio ranging from about 1:1:1 to about 1:2:2 in the reaction mixture to provide the reaction product comprising from about 20 to about 40 % by weight of the nanoparticles in a substantially organic medium.

Anmelder

Firma

Afton Chemical Corporation

Land

🇺🇸 USA

Fachgebiete