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    1,4-Dioxacylcloalkane-2-one and 1,4-dioxacycloalkene-2-one
    1.
    发明授权
    1,4-Dioxacylcloalkane-2-one and 1,4-dioxacycloalkene-2-one 失效
    1,4-二氧杂环烷基-2-酮和1,4-二氧杂环烯-2-酮

    公开(公告)号：US06573391B1

    公开(公告)日：2003-06-03

    申请号：US10088812

    申请日：2002-03-21

    申请人： Marcus Eh ,  Peter Wörner

    发明人： Marcus Eh ,  Peter Wörner

    IPC分类号： C07D32300

    CPC分类号： C07D321/00 ,  C11B9/0073

    摘要： The present invention relates to novel macrocyclic compounds, and to their preparation and use in perfumes. Specifically, the present invention relates to novel 1,4-dioxacycloalkan-2ones and 1,4-dioxzcycloaken-2-ones.

    摘要翻译： 本发明涉及新型大环化合物及其在香料中的制备和用途。 具体地说，本发明涉及新的1,4-二氧杂环烷烃-2-酮和1,4-二氧杂环己烷-2-酮。

    Process for recycling polytrimethylene terephthalate cyclic dimer
    3.
    发明授权
    Process for recycling polytrimethylene terephthalate cyclic dimer 失效
    聚对苯二甲酸丙二醇酯环状二聚体回收方法

    公开(公告)号：US06576774B2

    公开(公告)日：2003-06-10

    申请号：US09892306

    申请日：2001-06-26

    申请人： Betty Marrou Scardino ,  Donald Ross Kelsey

    发明人： Betty Marrou Scardino ,  Donald Ross Kelsey

    IPC分类号： C07D32300

    CPC分类号： C08G63/83 ,  C08G63/183 ,  C08G63/78

    摘要： This invention is an improvement upon the known process for polymerization of polytrimethylene terephthalate by esterification of terephthalic acid or dimethyl terephthalate with 1,3-propane diol, precondensation of the esterification product to produce a precondensation product, and polycondensation of the precondensation product to produce polytrimethylene terephthalate and, optionally, solid stating of this product to produce higher intrinsic viscosity polytrimethylene terephthalate. The cyclic dimer of terephthalic acid and 1,3-propane diol is produced as a byproduct of the above process and the improvement comprises (a) recovering the cyclic dimer from the polymerization, (b) reacting from 0.5 to 25 percent by weight of the cyclic dimer in 1,3-propane diol in the presence of from 0.1 to 10 percent by weight of the cyclic dimer of a basic catalyst for five minutes to 24 hours at 50 to 210° C., (c) optionally neutralizing the basic catalyst in the reaction product of (b), and (d) recycling the reaction product into the polymerization process.

    摘要翻译： 本发明是通过对苯二甲酸或对苯二甲酸二甲酯与1,3-丙二醇的酯化，酯化产物的预缩合以产生预缩合产物，以及预缩合产物缩聚以产生聚三亚甲基的聚对苯二甲酸丙二醇酯的已知方法的改进 对苯二甲酸酯和任选地固体化该产物以产生更高的特性粘度的聚对苯二甲酸丙二醇酯。 制备对苯二甲酸和1,3-丙二醇的环状二聚体作为上述方法的副产物，改进包括（a）从聚合反应回收环状二聚体，（b）使0.5〜25重量％ 在0.1-10重量％的碱性催化剂的环状二聚体存在下，在50-110℃下，在丙烷二醇中存在5分钟至24小时，（c）任选地中和碱性催化剂 在（b）和（d）的反应产物中将反应产物再循环到聚合过程中。

    Process for preparing (-)-(18-crown-6)-2,3,11,12-tetracarboxylic acid, and (-)-chiral stationary phases for resolution of racemic compounds using the same
    4.
    发明授权
    Process for preparing (-)-(18-crown-6)-2,3,11,12-tetracarboxylic acid, and (-)-chiral stationary phases for resolution of racemic compounds using the same 有权
    （ - ） - （18-冠-6）-2,3,11,12-四羧酸和（ - ） - 手性固定相制备用于拆分外消旋化合物的方法

    公开(公告)号：US06818778B2

    公开(公告)日：2004-11-16

    申请号：US10432326

    申请日：2003-05-22

    申请人： Ho Seong Lee ,  Chang Soo Lee ,  Jin Won Yun ,  Seong Jin Kim ,  Kyung-Hyun Gahm

    发明人： Ho Seong Lee ,  Chang Soo Lee ,  Jin Won Yun ,  Seong Jin Kim ,  Kyung-Hyun Gahm

    IPC分类号： C07D32300

    CPC分类号： C07D323/00

    摘要： The present invention relates to a process for preparing (−)-(18-crown-6)-2,3,11,12-tetracarboxylic acid and its use for (−)-chiral stationary phases for resolution of racemic compounds. More particularly, the present invention relates to the process for preparing (−)-(18-crown-6)-2,3,11,12-tetracarboxylic acid expressed by formula (1) and the use thereof as a stationary phases for resolution of racemic compounds, wherein the use of them provides excellent separation of a desired chiral compound from racemic mixture in employing capillary electrophoresis (CE) or liquid chromatography to elute the desired one first by controlling a flowing order of enantioners, thus allowing to be consistently separated in an economical due to much less requirement of eluent, quantitative and high purity manner.

    摘要翻译： 本发明涉及制备（ - ） - （18-冠-6）-2,3,11,12-四羧酸的方法及其用于（ - ） - 手性固定相以拆分外消旋化合物的方法。 更具体地说，本发明涉及由式（1）表示的（ - ） - （18-冠-6）-2,3,11,12-四羧酸的制备方法及其作为用于分辨的固定相的用途 的外消旋化合物，其中使用它们在使用毛细管电泳（CE）或液相色谱法中从外消旋混合物中提供优异的分离，以首先通过控制对映体的流动顺序洗脱所需的手性化合物，从而允许一致地分离 由于洗脱液要求少，定量和高纯度的方式经济。

    Manufacture of cyclic ester oligomers
    6.
    发明授权
    Manufacture of cyclic ester oligomers 失效
    环酯低聚物的制备

    公开(公告)号：US06646134B2

    公开(公告)日：2003-11-11

    申请号：US10083864

    申请日：2002-02-25

    申请人： Edward G. Brugel

    发明人： Edward G. Brugel

    IPC分类号： C07D32300

    CPC分类号： C08G63/78 ,  C08G63/81

    摘要： Cyclic ester oligomers (CEOs) are manufactured from linear polyesters or their precursors by a continuous reactive extraction in which the linear polyesters are converted to the CEOs and the CEOs selectively removed from the mixture by extraction with a fluid. The fluid may be a liquid or a gas. The CEOs prodcued are useful as monomers, for example in a reaction injection molding process to rapidly form polyesters from low viscosity liquids.

    摘要翻译： 环状酯低聚物（CEO）由线性聚酯或其前体通过连续反应萃取制备，其中线性聚酯转化为CEO，并且通过用流体萃取选择性地从混合物中除去CEO。 流体可以是液体或气体。 产生的CEO们可用作单体，例如在反应注射成型过程中从低粘度液体快速形成聚酯。