Patent · US Active

High viscosity polyacrylate base fluids

US11965140B2 · kind B2 · utility

0Cited by

4References

18Claims

0Family size

Assignee

Evonik Operations GmbH · DE

Inventors

Stefan Karl Maier · Ober-Ramstadt, DE
Michael Neusius · Darmstadt, DE
Qi Xiao · Shanghai, CN
Gabriela Fedor · Essen, DE
Stefan Hilf · Rodenbach, DE
Frank-Olaf Mähling · Mannheim, DE

Key dates

Filing date	Dec 12, 2019
Grant date	Apr 23, 2024
Priority date	—
Expiry date	Dec 12, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/72
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Low molecular weight polyalkyl acrylate polymers can be used as high viscosity base fluids. A corresponding method can be used for their preparation. Lubricant compositions may contain such low molecular weight polyalkyl acrylate polymers and the compositions may be used as automatic transmission fluids, manual transmission fluids, continuously variable transmission fluids, gear oil formulations, industrial gear oil formulations, axle fluid formulations, dual clutch transmission fluids, dedicated hybrid transmission fluids, or hydraulic oils.

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