知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

420 条记录 (耗时 0.022 秒)

    PRODUCT OF INTERNAL DEHYDRATION OF HIGH-PURITY SORBITOL
    3.
    发明公开
    PRODUCT OF INTERNAL DEHYDRATION OF HIGH-PURITY SORBITOL 审中-公开

    公开(公告)号：US20240092796A1

    公开(公告)日：2024-03-21

    申请号：US18254320

    申请日：2021-11-19

    申请人： ROQUETTE FRERES

    发明人： Nicolas JACQUEL ,  René SAINT-LOUP ,  Théodore VANBESIEN

    IPC分类号： C07D493/04

    CPC分类号： C07D493/04

    摘要： The present invention relates to a product of internal dehydration of sorbitol, characterized in that it has a total residual nitrogen atom content of between 0.01 ppm and 150 ppm, preferably of between 0.02 ppm and 20 ppm, more preferably of between 0.05 ppm and 10 ppm, and, more preferentially, of between 0.07 ppm and 5 ppm, this residual content being expressed as dry weight relative to the total dry weight of said product, and in that it has a total residual sulphur atom content of between 0.0001 ppm and 100 ppm, preferably between 0.0002 ppm and 50 ppm, more preferably between 0.0004 ppm and 30 ppm, and more preferentially, between 0.0008 ppm and 20 ppm, this total residual content being expressed in dry weight relative to the dry weight of said product; a method for purifying such a product and a polymer comprising a unit corresponding to said product.

    Thermoplastic polyester with high incorporation of 1,4:3,6-dianhydro-L-iditol units
    5.
    发明授权
    Thermoplastic polyester with high incorporation of 1,4:3,6-dianhydro-L-iditol units 有权

    公开(公告)号：US11866546B2

    公开(公告)日：2024-01-09

    申请号：US16755754

    申请日：2018-10-10

    申请人： ROQUETTE FRERES

    发明人： René Saint-Loup ,  Nicolas Jacquel

    IPC分类号： C08G63/672 ,  C08G63/80 ,  C08L67/02

    CPC分类号： C08G63/672 ,  C08G63/80 ,  C08L67/025 ,  C08L2205/06

    摘要： A thermoplastic polyester, and in particular a thermoplastic polyester including at least one 1,4:3,6-dianhydro-L-iditol unit (A), at least one linear aliphatic diol unit (B), at least one aromatic dicarboxylic unit (C), the thermoplastic polyester having a reduced viscosity in solution (25° C.; phenol (50 wt. %):ortho-dichlorobenzene (50 wt. %); 5 g of polyester/L) greater than 25 mL/g. A method for preparing such a polyester, a composition including the same and the use of the thermoplastic polyester for the production of finished or semi-finished plastic articles. The thermoplastic polyester is advantageous in that it has a particularly high incorporation rate of 1,4:3,6-dianhydro-L-iditol (A) units, at least greater than 85%, and most specifically at least greater than 90%.

    METHOD FOR MODIFYING POLYSACCHARIDE MATERIAL BY SEQUENCED HOMOGENEOUS CHEMICAL FUNCTIONALISATION
    6.
    发明公开
    METHOD FOR MODIFYING POLYSACCHARIDE MATERIAL BY SEQUENCED HOMOGENEOUS CHEMICAL FUNCTIONALISATION 审中-公开

    公开(公告)号：US20230331873A1

    公开(公告)日：2023-10-19

    申请号：US18113772

    申请日：2023-02-24

    申请人： ROQUETTE FRERES

    发明人： Solène BOCK ,  Vincent WIATZ ,  Thomas GUGLIELMETTI ,  Joffrey ATTARD

    IPC分类号： C08B31/12 ,  C04B24/38 ,  C04B28/04 ,  C04B28/14 ,  C08B31/00 ,  C08B31/02

    CPC分类号： C08B31/12 ,  C04B24/38 ,  C04B28/04 ,  C04B28/14 ,  C08B31/006 ,  C08B31/02 ,  C04B2103/44

    摘要： The present invention concerns a method for modifying a polysaccharide material, preferably an amylaceous material, involving a first step of homogeneous solubilisation of said polysaccharide material in an aqueous solvent, followed by a step of homogeneous chemical functionalisation comprising at least one non-crosslinking chemical modification, or at least one crosslinking chemical modification, or a sequence of at least one non-crosslinking chemical modification and at least one crosslinking chemical modification. Secondly, the present invention concerns a modified polysaccharide material, in particular obtained by the method according to the invention, characterised in that it has a novel distribution of the chemical substituents attached to the hydroxyl functions of the anhydroglucose units of said polysaccharide material. The novel starches can be used as organic adjuvants for dry mortars made from cement or made from gypsum, in particular as a binder for a dry mortar made from cement or as a thickening agent for a mortar made from plaster.