Operating medium for carbon dioxide-cooling systems and air-conditioning systems

US7303693B2 · kind B2 · utility

Assignee

• Fuchs Petrolub AG · DE

Inventors

• Jorg Fahl · Herzberg, DE
• Jürgen Braun · Waiblingen, DE

Key dates

• Filing date: Dec 24, 2002
• Grant date: Dec 4, 2007
• Expiry date: Sep 18, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/30
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to resource operating medium compositions containing additivated lubricants based on polyalkylene glycols and/or neopentyl polyol esters, which are additivated with alkylated triaryl phosphate esters which are suitable for lubricating refrigerators, air-conditioning systems, heat pumps and similar systems which are operated using carbon dioxide as an operating medium.