Patent · US Active

Viscosity index improver with improved shear-resistance and solubility after shear

US10920164B2 · kind B2 · utility

5Cited by

7References

20Claims

0Family size

Assignee

Evonik Operations GmbH · DE

Inventors

Rebecca Klein · Frankfurt am Main, DE
Holger Becker · Darmstadt, DE
Dieter Janßen · Groß-Umstadt, DE
Sebastian Seibel · Darmstadt, DE

Key dates

Filing date	Dec 12, 2018
Grant date	Feb 16, 2021
Priority date	—
Expiry date	Mar 18, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10N2040/04
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention relates to a poly alkyl(meth)acrylate polymer comprising a combination of polybutadiene-based monomers having different average molecular weight, lubricant compositions comprising the polymer, a method for manufacturing the polymer and the use of the polymer as a viscosity index improver in a lubricating oil composition.

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