Process for the production of 1,4-butanediol from renewable sources and polyesters obtained therefrom

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United States of America

PATENT NO 12195420
APP PUB NO 20220298090A1
SERIAL NO

17834151

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Abstract

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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.

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Patent Owner(s)

  • NOVAMONT S. P. A.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bastioli, Catia Novara, IT 128 2137
Capuzzi, Luigi Novara, IT 67 235
Cotti, Comettini Marco Brusnengo, IT 14 57
Vallero, Roberto Borgo D'Ale, IT 23 97

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