Herstellung von Glycerinnanokapseln und deren Verwendung als Additiv in einem Hydrophoben Schmiermittel

Details

Veröffentlichungs-Nr.

EP4763958

Anmeldetag

17. Dezember 2024

Veröffentlichung

24. Juni 2026

Rechtsraum

EP

Abstract

The invention herein disclosed refers to a method for preparation of glycerol nanocapsules (GNCs), adapted as an additive in a hydrophobic lubricant for improving lubricity in a tribological system, further to a glycerol nanocapsule (GNC) and finally to the respective use. The method comprises the steps of providing a continuous phase comprising at least a polyalphaolefin (PAO) and a dispersed phase comprising at least glycerol (GLY), of - mixing the continuous phase and the dispersed phase and performing high-pressure homogenization with a microfluidizer resulting in a minielmulsion comprising glycerol nanodroplets (GNPs). Further, adding a diisocyanate crosslinking agent (TDI) to the miniemulsion is comprised, leading to a polymerization reaction of the diisocyanate crosslinking agent (TDI) and glycerol (GLY) at the interfaces of the glycerol nanodroplets (GNPs) dispersed in the polyalphaolefin (PAO), resulting in formation of crosslinked glycerol-based polyurethan shells encapsulating a core of unreacted glycerol (GLY). Thereby glycerol nanocapsules (GNCs) are obtained, comprising a core of unreacted glycerol (GLY) encapsulated in a crosslinked glycerol-based polyurethan shell.

Anmelder

Firmen

FUCHS SE
Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.

Land

🇩🇪 Deutschland