LUBRICATING COMPOSITION FOR CLEANING STOP VALVES OF GAS DUCTS Russian patent published in 2003 - IPC

FIELD: lubricants. SUBSTANCE: composition for cleaning surfaces of stop valves from solid residues of spent grease as well as to maintain normal functioning of valves under dry conditions (originating from gas condensate-caused degradation of sealing grease) contains, wt %: lithium stearate 6-15, solid filler 20-25, antioxidant 0.1-0.5, molybdenum disulfide 1-5, low-molecular rubber 1-5, alkyl salicylate additive 2-5, and plastic substrate to 100%, the latter being industrial mineral oil or polymethylsiloxane liquid with viscosity 100-1000 sq.mm/s (20 C). EFFECT: increased dissolving ability toward solid residues and ensured stable operation from -60 to +120 C. 2 tbl, 10 ex