MULTIFUNCTIONAL LUBRICATING FLUID Russian patent published in 2012 - IPC C10M157/00 C10N20/02 C10N40/04 C10N40/08 C10N40/25 

FIELD: chemistry.

SUBSTANCE: invention relates to a lubricating composition containing at least one oil of the groups I to V and a mixture of at least two polymers characterised by difference of permanent shearing stability index (PSSI), as measured by the standardised KRL test (test using a conical roller bearing) for 20 hours at 100°C, of at least 25, where the polymers of said mixture are selected from polymers which improve viscosity, which are selected from polyalphaolefins (PAO) with kinematic viscosity at 100°C higher than 90 cSt, polyisobutenes (PIB), polyesters, olefin copolymers (OCP), homopolymers or copolymers of styrene, butadiene or isoprene, polymethacrylates (PMA), and optionally from polymers which improve setting point which are selected from PMA. The invention also relates to a method of producing a lubricating composition and use of the lubricating composition.

EFFECT: obtaining a single liquid whose properties are suitable for simultaneous lubrication of different mechanisms in motor vehicles.

19 cl, 1 tbl, 2 ex