Patent · US Active

Hydrogenated linear polydiene copolymers as base stock or lubricant additives for lubricant compositions

US11603425B2 · kind B2 · utility

0Cited by

29References

12Claims

0Family size

Assignee

Evonik Operations GmbH · DE

Inventors

Emily Clare Schweissinger · Dortmund, DE
Yvonne Gross-Onnebrink · Raesfeld, DE
Holger Pletsch · Essen, DE

Key dates

Filing date	May 4, 2021
Grant date	Mar 14, 2023
Priority date	—
Expiry date	May 4, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10N2060/02
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates to hydrogenated linear copolymers comprising butadiene and isoprene monomer units, as well as the process for preparing these copolymers. The invention further relates to a lubricating oil composition comprising one or more hydrogenated linear copolymers according to the invention, as well as to the use of the aforementioned copolymers as a lubricant additive or a synthetic base fluid for lubricant compositions, especially in gear oils, transmission oils, hydraulic oils, engine oils, grease, marine oils or industrial lubricating oils.

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