Patent · US Active

Environmentally friendly lubricating grease for steel ropes

US11421181B2 · kind B2 · utility

0Cited by

7References

20Claims

0Family size

Assignee

KLUEBER LUBRICATION MUENCHEN SE & CO. KG · DE

Inventors

Brigitte Mayrhofer · Munich, DE
Maximilian Erhard · Munich, DE
Patrick Wittmeyer · Schwaigwall, DE
Stefan Seemeyer · Hilden, DE

Key dates

Filing date	Jul 9, 2019
Grant date	Aug 23, 2022
Priority date	—
Expiry date	Jul 9, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10N2050/10
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

An environmentally acceptable lubricating grease, comprising: a) 50 wt % to 90 wt % of a biodegradable base oil comprising a biodegradable ester as base oil; b) 3 wt % to 25 wt % of a thickener selected from b1) 3 wt % to 12 wt % biodegradable calcium soap, b2) 3 wt % to 25 wt % bentonites, b3) and mixtures thereof; c) 4 wt % to 40 wt % additives, comprising c1) 1 wt % to 12 wt % fumed silicon dioxide and/or polytetrafluoroethylene and/or mixtures thereof, c2) 2 wt % to 45 wt % of a polymer selected from polyisobutylene, polyisobutylene/butene copolymer, polymethacrylates, polyesters and mixtures thereof, c3) 0.5 wt % to 20 wt % of a solid lubricant.

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