Patent · US Expired

Environment-friendly basic oil for formulating hydraulic fluids

US5451334A · kind A · utility

36Cited by

8References

11Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Frank Bongardt · Meerbusch, DE
Karl Schmid · Mettmann, DE
Reinhold Wuest · Kaarst, DE

Key dates

Filing date	Nov 21, 1994
Grant date	Sep 19, 1995
Priority date	—
Expiry date	Nov 21, 2014

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10N2070/02
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

An environment-friendly basic oil based on natural materials for the formulation of hydraulic oils having improved viscosity at elevated temperature and lower pour point contains rapeseed oil or soybean oil as the main component, an antioxidant selected from methoxyphenol, ethoxyphenol, butyl hydroxyanisole, butyl hydroxytoluene, methoxyhydroquinone, ethoxyhydroquinone, tertiary butyl hydroquinone, and tocopherol, and an ester of a monocarboxylic acid or a fatty acid.

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