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    A PROCESS FOR PREPARING FURAN-2,5-DICARBOXYLIC ACID
    4.
    发明申请
    A PROCESS FOR PREPARING FURAN-2,5-DICARBOXYLIC ACID 审中-公开

    公开(公告)号：US20180319758A1

    公开(公告)日：2018-11-08

    申请号：US15773411

    申请日：2016-11-03

    申请人： BASF SE

    发明人： Alvaro Gordillo ,  Martin Alexander Bohn ,  Stephan A Schunk ,  Ivana Jevtovikj ,  Rene Backes ,  Holger Werhan ,  Svenia Duefert ,  Richard Dehn ,  Markus Piepenbrink

    IPC分类号： C07D307/46

    CPC分类号： C07D307/46 ,  C07D307/68

    摘要： Provided herein is a process for preparing furan-2,5-dicarboxylic acid. The process includes the following steps: (A-1) preparing a starting mixture comprising one, two or more carbohydrate compounds selected from the group consisting of: hexoses, oligosaccharides comprising hexose units, and polysaccharides including hexose units, and as a solvent or as a co-solvent for the carbohydrate compounds an amount of one or more carboxylic acid esters of a formula (II) and (A-2) subjecting the starting mixture to reaction conditions so that at least one of the one, two or more carbohydrate compounds reacts, and a fraction of the amount of one or more carboxylic acid esters of formula (II) is hydrolyzed, resulting in a mixture including 5-(hydroxymethyl)furfural and/or the one or more HMF esters of a formula (I), one or more carboxylic acids of a formula (III) and a remaining fraction of the amount of one or more carboxylic acid esters of formula (II).

    PROCESS FOR PREPARING FURAN-2,5-DICARBOXYLIC ACID
    6.
    发明申请
    PROCESS FOR PREPARING FURAN-2,5-DICARBOXYLIC ACID 审中-公开

    公开(公告)号：US20180215724A1

    公开(公告)日：2018-08-02

    申请号：US15746082

    申请日：2016-07-01

    申请人： BASF SE

    发明人： Alvaro Gordillo ,  Holger Werhan ,  Richard Dehn ,  Benoit Blank ,  Joaquim Henrique Teles ,  Stephan A Schunk ,  Markus Piepenbrink ,  Rene Backes ,  Lei Zhang

    IPC分类号： C07D307/46 ,  B01J23/42 ,  B01J21/18

    CPC分类号： C07D307/46 ,  B01J21/18 ,  B01J23/42

    摘要： A process for preparing furan-2,5-dicarboxylic acid is disclosed. The process includes the following steps: preparing or providing a starting mixture including 5-(hydroxy-methyl)furfural (HMF), 5,5′-[oxy-bis(methylene)]bis-2-furfural (di-HMF), and water; subjecting said starting mixture to oxidation conditions in the presence of an oxygen-containing gas and a catalytically effective amount of a heterogeneous catalyst including one or more noble metals on a support so that both HMF and di-HMF react to give furane-2,5-dicarboxylic acid in a product mixture also including water and oxidation by-products. The use of a catalyst is also disclosed, the catalyst including one or more noble metals on a support as an heterogeneous oxidation catalyst for catalyzing in an aqueous starting mixture the reaction of both HMF and di-HMF to furane-2,5-dicarboxylic acid.

    PROCESS FOR THE PREPARATION OF A FURFURAL DERIVATIVE COMPRISING NEUTRALIZING AN ACID REACTION MIXTURE
    7.
    发明申请
    PROCESS FOR THE PREPARATION OF A FURFURAL DERIVATIVE COMPRISING NEUTRALIZING AN ACID REACTION MIXTURE 审中-公开

    公开(公告)号：US20180186761A1

    公开(公告)日：2018-07-05

    申请号：US15736037

    申请日：2016-07-01

    申请人： Synvina C.V.

    发明人： Johannes Maria Franciscus Sijben ,  Etienne Mazoyer ,  Ana Sofia Vagueiro De Sousa Dias ,  Gerardus Johannes Maria Gruter

    IPC分类号： C07D307/48

    CPC分类号： C07D307/48 ,  C07D307/46

    摘要： A furfural derivative having the chemical formula (1) where R represents hydrogen, an alkyl group or an acyl group, is prepared in a process, which process includes reacting a fructose-and/or glucose-containing starting material with a liquid hydroxyl group-containing compound of formula R—OH in the presence of an acid catalyst at a reaction temperature in the range of 150 to 300° C. to produce a primary acid reaction mixture including the furfural derivative of chemical formula (1); separating part of the liquid hydroxyl group-containing compound from the primary acid reaction mixture to yield a secondary acid reaction mixture; neutralizing the secondary acid reaction mixture to a pH-value of at least 3 to obtain a neutralized reaction mixture; and purifying the neutralized reaction mixture to recover the furfural derivative of chemical formula (1).