OIL FOR FILM-LUBRICATION BEARINGS AND REDUCING GEARS OF ROLLING MILLS Russian patent published in 2010 - IPC C10M171/02 C10M143/00 C10M129/10 C10M137/10 C10M149/12 C10M155/02 C10N40/02 

FIELD: chemistry.

SUBSTANCE: oil based on compressor oil with viscosity index of 90-92 and kinematic viscosity at 100°C of 21-25 mm²/s contains a linear high-molecular polymer with molecular weight of 75000-260000 and target additives, in wt %: antiwear additive ADTF 0.4-1.3, antioxidant Agidol-1A 0.8-1, anti-foaming agent PMS-200A 0.005, multifunctional additive K-33 0.5-1. The polymer used is a copolymer of ethylene with propylene with molecular weight of 200000 in amount of 0.4-0.8 wt %, styrene butadiene with molecular weight of 75000 in amount of 1.5-1.8 wt % or linear styrene isoprene with molecular weight of 150000 in amount of 0.6-1.2 wt %. The oil can also contain a demulsifying additive Diproxamine-157 in amount of 0.01-0.02 wt %.

EFFECT: increased bearing capacity of the oil wedge in the film-lubrication bearing, longer life of the oil.

5 cl