Patent · US Active

Viscosity index improver concentrates

US10731100B2 · kind B2 · utility

0Cited by

14References

5Claims

0Family size

Assignee

Infineum International Limited · GB

Inventors

Rajiv R. Taribagil · Edison, US
Stuart A. Taylor · Reading, GB
Stuart Briggs · Edison, US
Laurent Chambard · Woodstock, GB

Key dates

Filing date	May 4, 2018
Grant date	Aug 4, 2020
Priority date	—
Expiry date	May 23, 2038

Classification

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

Abstract

A viscosity index improver containing, in non-ester diluent oil, one or more hydrogenated, functionalized linear block copolymers having at least one block derived from monoalkenyl arene covalently linked to at least one block derived from diene in an amount that is greater than the critical overlap concentration (ch*), in mass %, for the linear block copolymers in the diluent oil; and an amount of ester base stock.

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