Hydraulic fluids, containing cyclic carboxylic acid derivatives

US6783693B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Bayram Aydin · Ludwigshafen, DE
• Uwe Fidorra · Monsheim, DE
• Arthur Hohn · Tauberbischofsheim, DE
• Ladislaus Meszaros · Mutterstadt, DE
• Jan Nouwen · Brecht, BE
• Knut Oppenlander · Ludwigshafen, DE
• Michael Roida · Weingarten, DE
• Michael Stosser · Schifferstadt, DE
• Bernd Wenderoth · Lampertheim, DE

Key dates

• Filing date: Oct 18, 2001
• Grant date: Aug 31, 2004
• Expiry date: Oct 18, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/08
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Hydraulic fluids, in particular brake fluids for motor vehicles, comprising from 0.01 to 50 wt % of one or more cyclic carboxylates, or cyclic carboxamides, which can carry a linear or branched C1-bis C20 alkyl group on the nitrogen atom.