Patent · US Active

Aqueous functional fluids with antioxidants

US8329625B2 · kind B2 · utility

0Cited by

14References

4Claims

0Family size

Assignee

Ciba Specialty Chemicals Corporation · US

Inventors

Peter Rohrbach · Remchingen, DE
Samuel Evans · Marly, CH
Stefan Laeuger · Rheinfelden (Baden), DE

Key dates

Filing date	May 3, 2010
Grant date	Dec 11, 2012
Priority date	—
Expiry date	May 3, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10N2040/20
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates to an aqueous functional fluid comprising an antioxidant of the hindered phenol type and a water-soluble polyalkylene glycol. The aqueous functional fluids are especially suitable for use as hydraulic or metal working fluids. The present invention also relates to the use of the aqueous functional fluid for improving the performance properties of hydraulic or metal working fluids.

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