LUBRICANT PREPARATION METHOD Russian patent published in 2020 - IPC C10M177/00 C10M115/08 

FIELD: manufacturing technology; chemical or physical processes.

SUBSTANCE: disclosed is a method for preparing a grease, comprising a step of reacting a compound of formula (a) with a compound of formula (b) to obtain a compound of formula (c), where R¹ is selected from hydrocarbyl having 1 to 30 carbon atoms, R² is selected from hydrocarbyl or hydrocarbylene containing 1 to 30 carbon atoms, R³ is selected from hydrocarbyl, containing from 2 to 30 carbon atoms and n is equal to 2, and where reaction of compound of formula (a) with compound of formula (b) is carried out in the presence of base oil or compound of formula (c) is mixed with base oil. Also disclosed is a grease comprising a compound of formula (c), as well as a method of preparing a grease, comprising a step reacting a compound of formula (a) with a compound of formula (d) to obtain a compound of formula (e) and a step of reacting a compound of formula (e) with a compound of formula (b) to obtain a compound of formula (f), where R¹ is selected from hydrocarbyl having 1 to 30 carbon atoms, R² is selected from hydrocarbylene containing 1 to 30 carbon atoms, R³ is selected from hydrocarbyl having from 2 to 30 carbon atoms, n equals 2 and m denotes an integer equal to 1 or more, wherein the reaction of the compound of formula (e) with the compound of formula (b) is carried out in the presence of base oil or the compound of formula (f) is mixed with the base oil.

(a), (b), (c), (d),

(e),

(f).

EFFECT: lubricant preparation method is proposed.

10 cl, 1 tbl