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    Ketocarboxylic acids, ketocarboxylic esters, methods of manufacture and uses thereof
    2.
    发明授权
    Ketocarboxylic acids, ketocarboxylic esters, methods of manufacture and uses thereof 有权
    酮羧酸，酮羧酸酯，其制备方法和用途

    公开(公告)号：US09221741B2

    公开(公告)日：2015-12-29

    申请号：US13934368

    申请日：2013-07-03

    申请人： SEGETIS, Inc.

    发明人： Brian D. Mullen ,  Leo E. Manzer ,  Cora M. Leibig

    IPC分类号： C07C69/66 ,  C07C69/738 ,  C07C51/09 ,  C07C51/493 ,  C07C67/08 ,  C07C67/52 ,  C07C69/716

    CPC分类号： C07C69/738 ,  C07C51/09 ,  C07C51/493 ,  C07C67/08 ,  C07C67/52 ,  C07C69/716 ,  Y02P20/582 ,  C07C59/185

    摘要： Ketocarboxylic acids such as levulinic acid can be efficiently purified in high yield by esterification with a hydrocarbon polyol to the corresponding polyketocarboxylic ester, which can be readily purified, for example recrystallized. After purification, the ketocarboxylic ester can be hydrolyzed to provide pure ketocarboxylic acid, or a salt thereof, after removal of the esterifying hydrocarbon polyol, or used for other synthetic transformations. Advantageously, the polyketocarboxylic esters, ketocarboxylic acids, and salts thereof produced by this method are obtained in high purity.

    摘要翻译： 酮羧酸如乙酰丙酸可以通过用烃多元醇与相应的聚酮羧酸酯酯化而以高收率有效地纯化，其可以容易地纯化，例如重结晶。 纯化后，在除去酯化烃多元醇之后，可以将酮羧酸酯水解以提供纯酮羧酸或其盐，或用于其它合成转化。 有利地，以高纯度获得通过该方法制备的多酮羧酸酯，酮羧酸及其盐。

    Recovery of water miscible organic acids from aqueous solution as alkyl esters
    5.
    发明授权
    Recovery of water miscible organic acids from aqueous solution as alkyl esters 失效
    从水溶液中回收与水相溶的有机酸作为烷基酯

    公开(公告)号：US4442303A

    公开(公告)日：1984-04-10

    申请号：US214790

    申请日：1980-12-09

    申请人： Samuel S. Mims

    发明人： Samuel S. Mims

    IPC分类号： C07C51/493 ,  C07C67/08 ,  C07C67/58 ,  C07C67/03 ,  C07C67/54 ,  C07C67/60 ,  C07C69/003

    CPC分类号： C07C51/493 ,  C07C67/08 ,  C07C67/58

    摘要： In one of its embodiments this invention provides a process for recovering C.sub.4 -C.sub.6 dicarboxylic acid components contained in a waste byproduct stream derived from a reaction system in which adipic acid is produced by nitric acid oxidation of cyclohexanone/cyclohexanol.An important aspect of the process is the esterification and extraction of the C.sub.4 -C.sub.6 dicarboxylic acids in the aqueous byproduct stream with a mixture of C.sub.1 -C.sub.3 alkanol and C.sub.6 -C.sub.20 alkanol, and the subsequent recovery of di(C.sub.6 -C.sub.20 alkyl) esters of succinic acid, glutaric acid and adipic acid.In a broader aspect this invention provides a process for recovery of water miscible organic acid components contained in an aqueous solution as C.sub.6 -C.sub.20 alkyl esters of the organic acids.

    摘要翻译： 在其一个实施方案中，本发明提供了一种回收源自反应体系的废物副产物流中的C4-C6二羧酸组分的方法，其中己二酸通过环己酮/环己醇的硝酸氧化产生。 该方法的一个重要方面是用C1-C3链烷醇和C6-C20链烷醇的混合物酯化和萃取副产物流中的C 4 -C 6二羧酸，随后回收二（C 6 -C 20烷基）酯 的琥珀酸，戊二酸和己二酸。 在更广泛的方面，本发明提供了一种用于回收水溶液中含有的水混溶性有机酸组分作为有机酸的C 6 -C 20烷基酯的方法。

    Treatment of waste stream from adipic acid manufacture
    6.
    发明授权
    Treatment of waste stream from adipic acid manufacture 失效
    处理来自己二酸的废液流

    公开(公告)号：US4271315A

    公开(公告)日：1981-06-02

    申请号：US94427

    申请日：1979-11-15

    申请人： Norbert F. Cywinski

    发明人： Norbert F. Cywinski

    IPC分类号： C07C67/08 ,  C07C51/00 ,  C07C51/493 ,  C07C67/00 ,  C07C67/58 ,  C07C69/34 ,  C07C69/44 ,  B01D3/34

    CPC分类号： C07C67/08 ,  C07C67/58 ,  Y10S203/90

    摘要： This invention provides a process for improving the recovery of byproducts associated with the isolation of C.sub.4 -C.sub.6 dicarboxylic acids contained in a waste byproduct stream, derived from an adipic acid manufacturing operation wherein there is involved nitric acid oxidation of a cyclohexanone/cyclohexanol feedstream.The main byproducts which are isolated are high purity dimethyl succinate, dimethyl glutarate and dimethyl adipate. Monomethyl esters of these dicarboxylic acids are recovered and recycled in the process.

    摘要翻译： 本发明提供了一种改进与分离源自己二酸生产操作的废副产物流中的C4-C6二羧酸相关的副产物的回收方法，其中涉及环己酮/环己醇进料流的硝酸氧化。 分离出的主要副产物是高纯度琥珀酸二甲酯，戊二酸二甲酯和己二酸二甲酯。 这些二羧酸的单甲酯在该过程中被回收和再循环。