Patent · US Active

Glycol-free aqueous antifreeze compositions comprising dicarboxylic acid salts

US7704406B2 · kind B2 · utility

5Cited by

5References

7Claims

0Family size

Assignee

BASF SE

Inventors

Bernd Wenderoth · Lampertheim, DE
Monica Fernandez Gonzalez · Heidelberg, DE
Stefan Dambach · Nümbrecht, DE
Ludwina Machetanz · Ludwigshafen, DE
Uwe Nitzschke · Ludwigshafen, DE

Key dates

Filing date	Jul 29, 2008
Grant date	Apr 27, 2010
Priority date	—
Expiry date	Jul 29, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23F11/08
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates to an aqueous antifreeze composition comprising 10 to 50% by weight of one or more dicarboxylic acids, preferably aliphatic dicarboxylic acids having 4 to 12 carbon atoms in the form of the alkali metal, ammonium or alkaline earth metal salt. Preferably, these salts are used in combination with at least one further substance.This gives antifreeze compositions with a good frost protective action, good heat conductivity and good protection against corrosion.

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