METHOD OF ASPHALTENE OBTAINMENT Russian patent published in 2012 - IPC C10G21/06 C10G21/14 

FIELD: gas and oil production.

SUBSTANCE: invention refers to method of asphaltene obtainment by deasphaltisation of raw hydrocarbon material, involving raw material processing by solvent with further separation of deasphaltisate solution from asphaltene-containing substances, gradual fractioning, with raw material processing first by organic solvent with low ionisation potential (IP_s) and boiling point at 152°C or less, then by organic solvent with high ionisation potential (IP_s) and boiling point at 152°C or less, obtaining asphaltene-containing sediment subject to sequential gradual fractioning by adding organic solvents in the order of ionisation potential (IP_s) decrease, obtaining asphaltene sediments at each stage, then asphaltene fractions are flushed from the sediments by the same solvents involved in fractioning, with further distillation of solvents and drying of distilled asphaltene fractions at 120°C or less.

EFFECT: advanced oil processing, extended application sphere of asphaltenes and list of materials viable as raw materials for up-to-date organic semiconductors.

7 cl, 4 tbl