Patent · US Active

Coolant comprising azole derivatives for cooling systems in fuel-cell drives

US7419618B2 · kind B2 · utility

4Cited by

25References

7Claims

0Family size

Assignee

BASF SE

Inventors

Bernd Wenderoth · Lampertheim, DE
Stefan Dambach · Nümbrecht, DE
Ladislaus Meszaros · Mutterstadt, DE
Uwe Fidorra · Monsheim, DE

Key dates

Filing date	Jun 8, 2006
Grant date	Sep 2, 2008
Priority date	—
Expiry date	Feb 7, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T90/40
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

An antifreeze concentrate for cooling systems in fuel-cell drives which gives ready-to-use aqueous coolant compositions having a conductivity of at most 50 μS/cm, based on alkylene glycols or derivatives thereof and containing one or more five-membered heterocyclic compounds (azole derivatives) having 2 or 3 hetero atoms from the group consisting of nitrogen and sulfur, which contain no or at most one sulfur atom and which may carry a fused aromatic or saturated six-membered ring.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.