PLASTIC GREASE AND METHOD OF ITS PREPARATION Russian patent published in 1998 - IPC

FIELD: lubricants. SUBSTANCE: preservative plastic grease containing, wt %: alkali-earth metal carbonate, 14-30; alkali-earth metal C₁₀-C₁₈-alkylsalicylate, 9-20; alkali-earth metal hydroxide, 6-10; and mineral or synthetic oil, the balance, is prepared by interaction of C₁₀-C₁₈-alkyl-derivatives of salicylic acid with alkali-earth metal hydroxide and carbon dioxide at weight ratio 1:(1.3-2.2):(0.5-1.0), respectively. Process is carried out in mineral oil and hydrocarbon solvent in presence of promoter at 30-80 C followed by separating solvent and promoter and homogenizing product. EFFECT: improved anticorrosive characteristics under high temperature, elevated humidity, and corrosive media conditions. 2 cl, 2 tbl