BRAKE FLUID Russian patent published in 2002 - IPC

FIELD: hydraulic liquids. SUBSTANCE: invention relates to brake fluids utilized in hydraulic circuits of motor car brakes, clutches, and other devices provided with drum brakes as well as inexpensive hydraulic liquids in other areas. Fluid contains, wt %: castor oil, 15-40; mono- and/or di- and/or triethylene glycols, or their mixture with higher glycols, 5-55; mono-C1-C4- alkyl ethers of mono- and/or di- and/or triethylene glycols, or their mixture with monoethers of higher glycols, and/or aliphatic alcohols, and/or cyclic alcohols, 29.99-61; and dye, 0.001- 0.01. EFFECT: raised boiling temperature, lowered freezing temperature, and improved technical and economical characteristics. 1 tbl, 6 ex