Viscosity index improver concentrates
AssigneeInfineum International Limited
InventorsRicardo A. Bloch, Jai G. Bansal, Dean B. Clarke
Life of this patent
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Abstract
A viscosity index (VI) improver concentrate containing at least one VI improver, from 0 to about 5 mass % of lubricating oil flow improver (LOFI) and diluent oil, wherein the diluent oil has a kv100 of at least about 3.0 cSt and a CCS at −35° C. of less than 3700 cPs, and wherein at least about 98 mass % of the concentrate is composed of VI improver, LOFI and diluent oil.
Claims19
A viscosity index (VI) improver concentrate comprising at least one VI improver, from 0 to about 5 mass % of lubricating oil flow improver (LOFI) and diluent oil, wherein the diluent oil has a kv100 of at least about 3.0 cSt and a CCS at −35° C. of less than 3700 cPs, wherein at least about 98 mass % of said concentrate consists essentially of said VI improver, said LOFI and said diluent oil, and wherein the diluent oil is a Group II, Group III or Group IV oil, a mixture thereof, or a mixture of a Group I oil and at least one Group II, Group III or Group IV oil.
Dependencies are inferred from the claim text.