ULTRAFINE DIAMOND-BASED PETROLEUM LUBRICATING OIL ADDITIVE AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2015 - IPC C10M125/02 B82B3/00 C10M161/00 C10M147/04 C10M155/02 B82Y30/00 

FIELD: chemistry.

SUBSTANCE: disclosed is a petroleum lubricating oil additive which contains ultrafine diamond powder treated with fluorine-containing oligomers with average molecular weight of 2200-4200 units and a general structural formula R^f-CF₃ or R^f-COOH, where R^f is a fluorine-containing radical of formula (I) and octyltriethoxysilane, with the ratio octyltriethoxysilane:fluorine-containing oligomer = 50:1 - 1:50, with the following ratio of components (wt %): ultrafine diamond powder - 59.2-94.9; octyltriethoxysilane and fluorine-containing oligomer - 5.1-40.8. A method of producing said additive is also disclosed.

EFFECT: improved sedimentation resistance and tribotechnical properties of composite lubricant materials based on petroleum oil.

3 cl, 2 tbl, 6 ex