| 摘要 |
FIELD: chemistry.SUBSTANCE: invention refers to a method for producing non-carcinogenic aromatic process oil containing a PCA extract of less than 3.0% according to the IP-346 method, involving purifying oil fractions of petroleum with selective solvents and recovering the extract, processing the extract additionally with a polar solvent and producing a raffinate as an end product; the polar solvent used is a mixture of a cyclic carbonate and a co-solvent, wherein the co-solvent is a substance or more than one substances specified in a group of: phenols, esters, nitriles, amides, lactames.EFFECT: more effective method for producing the non-carcinogenic aromatic process oil with the high content of aromatic hydrocarbons and the low content of carcinogenic, mutagenic, toxic substances.3 cl, 1 tbl, 8 ex |
