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AssigneeNovamont S.p.A.
InventorsMarco Cotti Comettini, Roberto Vallero, Catia Bastioli, Luigi Capuzzi
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The invention relates to a process for the production of 1,4-butanediol comprising the preparation of a fermentation broth comprising 1,4-butanediol from renewable sources and water, separation of a liquid fraction comprising said 1,4-butanediol and water from one or more solid fractions, said liquid fraction comprising 2-pyrrolidone in an amount higher than 80 ppm, one or more passages of the resulting liquid fraction through a bed comprising one or more cation-exchange resins thereby providing an output pH of said liquid fraction from 4 to 2, one or more passages of the resulting liquid fraction through a bed comprising one or more anion-exchange resins thereby providing an output pH of said liquid fraction from 8 to 11, and the distillation of the liquid fraction thereby provided so as to obtain a composition having a concentration of said 1,4-butanediol higher than 99.0% by weight and comprising 2-pyrrolidone in an amount lower than 6 ppm. The resulting composition should exhibit an APHA color value after ageing of less than 30.
A process for the production of 1,4-butanediol from renewable sources, said process comprising:
A composition of 1,4-butanediol from renewable sources, said composition having a concentration of said 1,4-butanediol higher than 99.0% by weight and comprising 2-pyrrolidone in an amount lower than 6 ppm and 2-(4′-hydroxybutoxy)-tetrahydrofuran in an amount lower than 800 ppm, said composition having an APHA color value after ageing of less than 30.
Dependencies are inferred from the claim text.