METHOD OF VEGETABLE OIL OXIDATION Russian patent published in 2014 - IPC C09F7/02 C09F7/12 C09F9/00 

FIELD: chemistry.

SUBSTANCE: method includes preliminary heating of oils at a temperature of 40-90°C with simultaneous air blowing and following oxidation of oils by air with heating. Oxidation is carried out until oxidate, viscosity of the solution of which in white spirit constitutes 19-25 s. At the stage of preliminary heating air with the content of ozone of 1.5-2.5 mg/l is blown through oil with the consumption of not more than 4 l/min·kg, and oil heating is realised by a heater from a temperature 40°C to 90°C at a rate of 2.5 degree/min. Sulphonic acids in an amount of 0.05-0.15% of oil weight and manganese (II) stearate in an amount of 0.8-1.5% of oil weight are added to oil, and the temperature mode of oxidation is supported by heating of oil to a temperature of 175°C at a rate of 3-5 degree/min with the following periodical cooling to a temperature of 100°C. The quantity of heating and cooling cycles of oil constitutes not fewer than two, and air consumption is supported at the level not higher than 4 l/min·kg.

EFFECT: reduction of the vegetable oil oxidation time, with obtaining a film-forming substance with required quality parameters, simplification of the technological process.

2 dwg, 1 tbl, 1 ex