METHOD FOR PRODUCTION OF FINELY DISPERSED POLYTETRAFLUOROETHYLENE, LUBRICATION COMPOSITION COMPRISING IT AND CONCENTRATE OF LUBRICATION COMPOSITION Russian patent published in 1997 - IPC

FIELD: production of anti-wear and antifriction materials; production of additives for oil compositions used in various engines. SUBSTANCE: fluoroplast-4 is affected by thermal destruction, the process is carried out at 480-540 C in stream of circulating gaseous products of thermal destruction which comprises 0.05-1 vol % of oxygen saturated by water or 0.1-5 vol % of air saturated by water. Thus prepared material as concentrated suspension comprising 1-85 mass % of polytetrafluoroethylene is fed into oil composition, the process is carried out till effective concentration of polytetrafluoroethylene is 0.1-20 mass %. EFFECT: higher efficiency; increased stability of oil suspension. 3 cl, 1 dwg, 5 tbl