LUBRICATING CONCENTRATE FOR LUBRICATION OF RAILWAY RAILS Russian patent published in 1997 - IPC

FIELD: chemical industry. SUBSTANCE: claimed lubricating concentration (wt parts): 50-75 graphite, and/or molybdenum disulfide, and/or talc; 0.5-12.5 powder-like metals having ultimate strength that does not exceed ultimate strength of the material to be lubricated, or oxides thereof; 5-10 disulfide alkylphenol-formaldehyde resin; 1-6 water-insoluble surface active agent having polarity that exceeds polarity of water; 1.5-10 butadiene-styrene thermoplastic material; 2-10 fatty acids containing more than 15 carbon atoms. The claimed solid lubricating material has specific surface area of 12-15•10³ см²/г. EFFECT: improved properties of the lubricating concentrate. 2 cl, 3 tbl