USE OF CARBOXYLIC ACIDS AND FURANIC MOLECULES FOR ESTERIFICATION
    1.
    发明申请
    USE OF CARBOXYLIC ACIDS AND FURANIC MOLECULES FOR ESTERIFICATION 有权
    使用羧酸和富含分子的蛋白质

    公开(公告)号:US20170015643A1

    公开(公告)日:2017-01-19

    申请号:US15253220

    申请日:2016-08-31

    CPC classification number: C07D307/68 C12P7/62 C12P17/04 Y02P20/544

    Abstract: A process for recovering and using an organic/carboxylic acid or furanic molecule by means of making an ester of a free carboxylic acid or furanic molecule with an alcohol in carbon dioxide (CO2) without the presence of any other acid catalyst at a reaction temperature and pressure that corresponds to supercritical, critical or near critical conditions for the alcohol and/or CO2 is described. The process can constitute part of a general process of refining carboxylic acids derived from a fermentation broth or use in the production of a variety of chemical compounds, such as C4 platform compounds or polymers.

    Abstract translation: 通过在二氧化碳(CO 2)中使醇与游离羧酸或呋喃分子形成酯而不在反应温度下不存在任何其它酸催化剂来回收和使用有机/羧酸或呋喃分子的方法,以及 描述了对应于醇和/或CO 2的超临界,临界或近临界条件的压力。 该方法可以构成精制来自发酵液的羧酸的一般方法的一部分,或用于生产各种化合物如C4平台化合物或聚合物。

    IMPROVED METHOD OF MAKING INTERNAL DEHYDRATION PRODUCTS OF SUGAR ALCOHOLS
    2.
    发明申请
    IMPROVED METHOD OF MAKING INTERNAL DEHYDRATION PRODUCTS OF SUGAR ALCOHOLS 有权
    制备糖醇内部脱水产物的改进方法

    公开(公告)号:US20150307510A1

    公开(公告)日:2015-10-29

    申请号:US14437258

    申请日:2013-10-04

    CPC classification number: C07D493/04 A61K31/34

    Abstract: A process is provided for making isohexides such as isosorbide with reduced color and/or improved color stability on storage, wherein ionic species in the crude dehydration product mixture are chromatographically substantially separated from the remainder of the crude product mixture, then the remainder is refined to yield a finished product for further use or sale.

    Abstract translation: 提供了一种用于制备异辛烷,例如具有降低的颜色的异山梨醇和/或储存时改善的颜色稳定性的异己酸酯,其中粗脱水产物混合物中的离子物质与粗产物混合物的其余部分进行色谱分离,然后将其余物质精制至 生产成品进一步使用或销售。

    PURIFICATION OF 2,5-FURANDICARBOXYLIC ACID, DIMETHYL ESTER AND OTHER ESTERIFIED PRODUCTS

    公开(公告)号:US20230348410A1

    公开(公告)日:2023-11-02

    申请号:US18041394

    申请日:2021-07-29

    CPC classification number: C07D307/68 C07B63/00

    Abstract: Methods are disclosed for the purification of crude compositions comprising 2,5-furandicarboxylic acid, dimethyl ester (FDME) or other diester derivatives (e.g., dialkyl ester derivatives) of 2,5-furandicarboxylic acid (FDCA), by crystallization. In this regard, certain solvents, and classes of solvents, have been discovered to promote the selective crystallization of FDME over impurities often generated in its production by FDCA esterification and other upstream processing steps. Importantly, certain impurities that are selectively removed include those that would otherwise be detrimental to the color and/or color stability of the purified composition. Other improvements in crystallization reside in the use of techniques such as liquid-liquid extraction and pre-treatment of the crystallization solution by contact with a solid medium.

    HYDROGENATION OF ISOHEXIDE PRODUCTS FOR IMPROVED COLOR
    7.
    发明申请
    HYDROGENATION OF ISOHEXIDE PRODUCTS FOR IMPROVED COLOR 有权
    加氢改性颜料的异黄酮产品

    公开(公告)号:US20150274745A1

    公开(公告)日:2015-10-01

    申请号:US14437266

    申请日:2013-10-04

    CPC classification number: C07D493/04

    Abstract: A process is described for making isohexides, comprising dehydrating one or more hexitols with an acid catalyst to form a crude dehydration product mixture including one or more isohexides, further processing the mixture to separate out one or more fractions of a greater purity or higher concentration of at least one of the isohexides, and hydrogenating at least one of a) the crude dehydration product mixture, b) a neutralized crude dehydration product mixture, following a neutralization of the crude dehydration product mixture, c) the product mixture following a neutralization step and further following a step to remove ionic species therefrom, d) a greater purity or higher concentration fraction, and e) a lesser purity or concentration fraction, by reaction with a hydrogen source in the presence of a hydrogenation catalyst. Hydrogenation improves the color and/or color stability of the material, especially of a finished isohexide product.

    Abstract translation: 描述了制备异戊二烯的方法,包括用酸催化剂脱水一种或多种己醇,以形成包含一种或多种异己烯的粗脱水产物混合物,进一步处理混合物以分离出一种或多种较高纯度或更高浓度的 至少一种异己烯化合物,和氢化a)粗脱水产物混合物中的至少一种,b)中和的粗脱水产物混合物,中和粗脱水产物混合物,c)产物混合物,在中和步骤和 进一步遵循从其中除去离子物质的步骤,d)在氢化催化剂存在下与氢源反应,d)更高的纯度或更高的浓度级分,和e)较小的纯度或浓度级分。 氢化改善了材料的颜色和/或颜色稳定性,特别是成品的异己烯产物的颜色和/或颜色稳定性。

    COLOR STABILIZATION OF MONOMERS AND OTHER REACTANTS FOR FORMING BIO-BASED POLYMERS

    公开(公告)号:US20210130311A1

    公开(公告)日:2021-05-06

    申请号:US17252964

    申请日:2019-06-18

    Abstract: Compositions and methods are provided for the production of bio-based polymers (e.g., polymers made from glucose), including polyesters, as well as end products resulting from such production, in which one or more color stabilizing additive compounds is utilized. The additive(s) may be used in the stabilization of a monomer or prepolymer that is reacted in such production methods, prior to obtaining the polymer. Particular bio-based polymers are those having furandicarboxylate moieties or residues in their backbone structure, with poly(alkylene furan dicarboxylate) polymers, such as polyethylene furan dicarboxylate) (PEF) and poly(trimethylene furan dicarboxylate) (PTF) being representative.

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