FIELD: chemistry.
SUBSTANCE: method of converting lignin material into a liquid product involves the following steps: (a) providing lignin starting material containing less than 50 wt % cellulose material; (b) treating said starting material at high pressure in a reaction medium, where the reaction temperature ranges from 300°C to 450°C and the reaction pressure ranges from 100 bar to 500 bar, the reaction mixture containing: (i) at least one C1-C2 carboxylic acid and/or salts and/or esters thereof, (ii) at least one alcohol and/or water, (iii) optionally an alkylating agent and (iv) optionally an inorganic salt, wherein during treatment, said starting material is converted to a liquid product, and (c) extracting the liquid product from the reaction medium.
EFFECT: enabling conversion of lignin material to a liquid product which can be used in fuel or in production of organic polymers.
22 cl, 2 tbl, 4 dwg, 4 ex
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