知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

116 条记录 (耗时 0.026 秒)

    Method for manufacturing furan-2,5-dicarboxylic acid (FDCA) from a solid salt
    51.
    发明授权
    Method for manufacturing furan-2,5-dicarboxylic acid (FDCA) from a solid salt 有权

    公开(公告)号：US10118908B2

    公开(公告)日：2018-11-06

    申请号：US15558247

    申请日：2016-03-17

    申请人： PURAC BIOCHEM BV

    发明人： Jan Van Krieken ,  Andre Banier De Haan

    IPC分类号： C07D307/68

    摘要： A method for manufacturing furan-2,5-dicarboxylic acid (FDCA) by converting a furan-2,5-dicarboxylate salt (MFDC) into furan-2,5-dicarboxylic acid (FDCA), includes the steps of combining solid MFDC with an inorganic acid (HY), to form a reaction mixture having solid FDCA in a concentration of 1-15 wt. % in a solution of a salt resulting from the cation of the furan-2,5-dicarboxylate salt and the anion of the inorganic acid (MY solution), removing solid FDCA from the reaction mixture in a solid/liquid separation step, and providing at least 40 vol. % of the MY solution resulting from the solid/liquid separation step to the step of combining MFDC with HY. The step of providing part of the MY salt solution resulting from the solid/liquid separation step to the step of combining MFDC with HY makes it possible to obtain a stable and economic process which results in an FDCA product with good quality, and obtained in high yield.

    Lactylate purification process
    53.
    发明授权
    Lactylate purification process 有权

    公开(公告)号：US10023517B2

    公开(公告)日：2018-07-17

    申请号：US15537698

    申请日：2015-12-22

    申请人： PURAC BIOCHEM BV

    发明人： Bastiaan Jeroen Victor Verkuijl ,  Andre Banier De Haan

    IPC分类号： C07C59/185 ,  C07C51/48 ,  C07C67/58 ,  C07C53/126 ,  C07C69/24

    摘要： A method for separation of fatty acid from a mixture having fatty acid, the corresponding acyl lactylate and lactic acid, method having steps of: a) providing dispersion of mixture in polar carrier; b) adjusting dispersion mixture to pH from 5-9; and, c) extracting fatty acid from dispersion carrier mixture into solvent immiscible with polar carrier, obtaining fatty acid solution and aqueous raffinate having lactic acid and fatty acid lactylate. Polar carrier has from 70-100 wt. % of water and from 0-30 wt. % of one or more miscible, polar co-solvents. Aqueous raffinate may be further processed by: i) acidifying raffinate to pH from 0-3; and, either ii)a) allowing acidified raffinate to separate into two layers and separating lower, aqueous layer from residual layer of acyl lactylate, or ii)b) extracting fatty acid lactylate from acidified raffinate into second solvent which is immiscible with aqueous raffinate, obtaining an acyl lactylate solution.

    Lactide block copolymer and method of preparation
    54.
    发明授权
    Lactide block copolymer and method of preparation 有权

    公开(公告)号：US10011680B2

    公开(公告)日：2018-07-03

    申请号：US15504219

    申请日：2015-08-18

    申请人： PURAC BIOCHEM BV

    发明人： Gerrit Gobius Du Sart

    IPC分类号： C08G63/08 ,  C08G63/78

    CPC分类号： C08G63/08 ,  C08G63/78

    摘要： A method for producing a lactide block copolymer, to a lactide block copolymer and to an article including the lactide block copolymer. In particular, the instant invention relates to an improved lactide block copolymer which may be obtained by providing a polymer of a first lactide monomer including a residual amount of the first monomer, adding and polymerizing a first amount of a second monomer of opposite chirality and subsequently adding and polymerizing a second amount of the second monomer. The resulting lactide block copolymer generally has a high melting point (e.g. from 190 to 250° C.).

    NON PURIFIED GLYCEROL
    58.
    发明申请
    NON PURIFIED GLYCEROL 审中-公开

    公开(公告)号：US20170198312A1

    公开(公告)日：2017-07-13

    申请号：US15314613

    申请日：2015-06-05

    申请人： PURAC BIOCHEM BV

    发明人： Lazar DRASKOVIC ,  Wijnand Raphael TERLOUW ,  Hendrik Leendert PELT ,  David SANCHEZ GARCIA ,  Diana VISSER ,  André Banier DE HAAN

    IPC分类号： C12P7/52 ,  C12N1/32 ,  C07C29/78

    CPC分类号： C12P7/52 ,  C07C29/78 ,  C12N1/32 ,  C07C31/225

    摘要： A process including the steps of: providing a glycerol rich-fraction as carbon source to a fermentation medium; fermenting the fermentation medium by means of a microorganism capable of producing propionic acid in the presence of a caustic salt to provide a fermentation broth including a propionic acid salt; and recovering propionic acid salt from the fermentation broth, wherein the glycerol rich-fraction is derived from a process including the steps of: subjecting the glycerol fraction to an evaporative crystallization step to form a distillate fraction including water, and a residue fraction including glycerol and solid salts; and subjecting the residue fraction to a salt removal step, resulting in a salt fraction and a glycerol-rich fraction. The process allows the manufacture of a propionic acid salt using a glycerol-rich carbon source without problems in down-stream processing, and without need for cost-intensive purification steps for the glycerol.