LUBRICANT COMPOSITION OF NONCOMBUSTIBLE WORKING FLUID FOR AVIATION EQUIPMENT Russian patent published in 2013 - IPC C10M105/74 C10N40/08 C10N30/10 

FIELD: chemistry.

SUBSTANCE: invention relates to a lubricant composition of noncombustible working (hydraulic) fluid which contains a base which is based on a mixture of phosphoric esters, containing 67.0-73.0 wt % tributyl phosphate, 19.0-25.0 wt % dibutyl phenyl phosphate and 7.0-9.0 wt % triisobutyl phosphate, and a synergetic mixture of additives. The composition of additives includes a thickener additive - polybutyl methacrylate with molecular weight of 5000-6500, epoxy resin, an anticorrosion additive - Chromoxan B, a stabilising additive - Irganox 1010 FF, an oxidation inhibitor - Irganox L 57, a corrosion inhibitor - 1,2,3-benzotriazole, a metal passivating agent - Amino O and a dye, in defined ratios.

EFFECT: obtaining a lubricant composition of noncombustible working fluid with high explosion and fire safety for aviation equipment, which provides stable operation of hydraulic systems.

1 cl, 4 tbl