NEW PROCESS FOR THE PREPARATION OF COMPLEX OLIGOMERIC STRUCTURES
    4.
    发明申请
    NEW PROCESS FOR THE PREPARATION OF COMPLEX OLIGOMERIC STRUCTURES 有权
    制备复合低分子结构的新工艺

    公开(公告)号:US20170022140A1

    公开(公告)日:2017-01-26

    申请号:US15124901

    申请日:2015-03-10

    Abstract: The invention relates to a process to prepare complex oligomeric structures obtained from vegetable oils. The process allows to use a mixture of triglycerides containing dicarboxylic acids produced by the oxidative cleavage of vegetable oils as a starting material, these oils being subjected to a step of heating (condensation) followed by a step of esterification with alcohols at temperatures up to 250° C.

    Abstract translation: 本发明涉及制备由植物油获得的复合低聚结构的方法。 该方法允许使用含有通过植物油的氧化裂解产生的二羧酸的甘油三酯的混合物作为起始原料,这些油经受加热(缩合),然后在高达250℃的温度下用醇酯化的步骤 C。

    PROCESS FOR THE PRODUCTION OF 1,4-BUTANEDIOL FROM RENEWABLE SOURCES AND POLYESTERS OBTAINED THEREFROM

    公开(公告)号:US20250091973A1

    公开(公告)日:2025-03-20

    申请号:US18966364

    申请日:2024-12-03

    Abstract: 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.

Patent Agency Ranking