METHOD OF PRODUCING BASE OIL HAVING LOW CONTENT OF SULPHUR AND ECOLOGICALLY CLEAN AROMATIC FILLER MATERIALS AND CAOUTCHOUC AND RUBBER PLASTICISERS Russian patent published in 2012 - IPC C10G21/06 C10G53/02 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing base oil with low content of sulphur, ecologically clean aromatic filler materials and caoutchouc and rubber plasticisers, involving selective purification of petroleum oil fractions with a selective solvent, separation of the first step extract and raffinate solutions, wherein the first step extract solution is cooled with subsequent separation a first step pseudo-raffinate solution in the settling tank, and after solvent regeneration, the first step raffinate solution is dewaxed and oxidised with subsequent extraction of the oxidised dewaxed oil to obtain second step raffinate and extract solutions; after solvent regeneration and subsequent adsorption or hydrofining, group II base oil with low sulphur content is obtained from the second step raffinate solution, wherein the second step extract solution is mixed with the first step pseudo-raffinate solution to obtain, after solvent regeneration, ecologically clean aromatic filler and a caoutchouc and rubber plasticiser with less than 2.9% content of polyaromatic hydrocarbons (PAH).

EFFECT: obtaining base oil with negligible sulphur content.

3 cl, 3 tbl, 3 dwg