METHOD OF PRODUCING MAGNETIC OIL Russian patent published in 2013 - IPC C10M169/04 C10M125/10 C10M177/00 C10N40/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing magnetic oil, which involves treating magnetite in a carboxylic diester in the presence of aqueous solution of 12-oxystearic acid or 12-hydroxy-Δ9-octadecenic acid while heating to water evaporation temperature, followed by heat treatment of the mixture at 110-180°C and cooling the obtained oil containing magnetite - 15-30 wt %, an oligoester obtained from 12-oxystearic acid or 12-hydroxy-Δ9-octadecenic acid 10-40 wt % and carboxylic diester - the balance, the method being characterised by that the obtained mixture is subjected to pressure of 100-150 MPa while heating for 3-17 hours, followed by releasing pressure and heat treatment for 5-20 hours.

EFFECT: improved method.

3 ex, 2 dwg