Method for producing diol derivatives
    1.
    发明授权
    Method for producing diol derivatives 失效
    二醇衍生物的制备方法

    公开(公告)号:US07005536B2

    公开(公告)日:2006-02-28

    申请号:US10618491

    申请日:2003-07-11

    IPC分类号: C07C69/66

    摘要: A method of producing a diol derivative efficiently and to high purity is provided. Specifically, the present invention relates to a method of producing a diol derivative having, as a fundamental step, a step of obtaining an α-hydroxycarboxylic acid ester by reacting (i) one or more 1,2-diols or (ii) a 1,2-diol and a primary alcohol as starting material(s) with oxygen in the presence of a catalyst comprising metal loaded on a carrier.

    摘要翻译: 提供了有效且高纯度地生产二醇衍生物的方法。 具体地说,本发明涉及一种制备二醇衍生物的方法,其作为基本步骤,通过使(ⅰ)一种或多种1,2-二醇或(ⅱ)ⅰ-羟基羧酸酯反应获得α-羟基羧酸酯的步骤 二醇和伯醇作为起始原料,在催化剂存在下,包含负载在载体上的金属。

    Method for producing alpha - hydroxycarboxylate
    2.
    发明申请
    Method for producing alpha - hydroxycarboxylate 有权
    α-羟基羧酸盐的制备方法

    公开(公告)号:US20050090686A1

    公开(公告)日:2005-04-28

    申请号:US10680919

    申请日:2003-10-08

    IPC分类号: C07C67/40 C07C69/66

    CPC分类号: C07C67/40 C07C69/675

    摘要: The present invention provides a process for more efficiently producing an α-hydroxycarboxylic acid ester wherein side reactions due to the α-hydroxycarboxylic acid ester are inhibited or prevented in comparison with prior art production processes. The invention provides a process for producing an α-hydroxycarboxylic acid ester comprising Steps 1 to 3: Step 1. reacting, in the presence of oxygen, (i) a 1,2-diol with a 1,2-diol or (ii) a 1,2-diol with an alcohol to obtain a reaction product containing an α-hydroxycarboxylic acid ester; Step 2. separating the α-hydroxycarboxylic acid ester from the reaction product obtained in Step 1 by distillation under reduced pressure; and Step 3. feeding Step 1 with a mixture obtained by partially or entirely removing water from the reaction product, wherein the mixture contains an unreacted 1,2-diol and/or alcohol.

    摘要翻译: 本发明提供了一种更有效地制备α-羟基羧酸酯的方法,其中与现有技术的制备方法相比,由于α-羟基羧酸酯的副反应被抑制或被阻止。 本发明提供了一种制备α-羟基羧酸酯的方法,其包括步骤1至3:步骤1,在氧的存在下,(i)1,2-二醇与1,2-二醇或(ii) 具有醇的1,2-二醇以获得含有α-羟基羧酸酯的反应产物; 步骤2.通过减压蒸馏从步骤1中获得的反应产物中分离α-羟基羧酸酯; 和步骤3.向通过部分或全部从反应产物中除去水而获得的混合物进料步骤1,其中混合物含有未反应的1,2-二醇和/或醇。

    Low temperature-fired porcelain articles and electronic parts including such porcelain articles
    3.
    发明授权
    Low temperature-fired porcelain articles and electronic parts including such porcelain articles 有权
    低温陶瓷制品和电子部件,包括这种瓷制品

    公开(公告)号:US06379805B1

    公开(公告)日:2002-04-30

    申请号:US09487131

    申请日:2000-01-19

    IPC分类号: C03C3091

    摘要: A low temperature-fired porcelain article includes a barium component in an amount of 40 to 65 wt % when calculated as BaO, a silicon component in an amount of 25 to 46 wt % when calculated as SiO2, an aluminum component in an amount of 0.1 to 20 wt % when calculated as Al2O3, a boron component in an amount of 0.3 to 1.5 wt % when calculated as B2O3, and a zinc component in an amount of 0.5 to 20 wt % when calculated as ZnO, optionally also a chromium component in an amount of 0.5 to 3.5 wt % when calculated as Cr2O3 wherein the porcelain article has a dielectric constant ∈r of not more than 10, a quality coefficient Q of not less than 2500, and preferably has an absolute value of a temperature coefficient &tgr;f of the resonance frequency of not more than 30 ppm/° C.

    摘要翻译: 作为低温烧成瓷制品,按照BaO计算,其含量为40〜65重量%的钡成分,SiO 2计算为25〜46重量%的硅成分,0.1成分的铝成分 至20重量%,当以B 2 O 3计算时,硼成分为0.3〜1.5重量%,锌成分为0.5〜20重量%,以ZnO计,也可为铬成分 以Cr 2 O 3计,其中瓷制品的介电常数εr不大于10,品质系数Q不小于2500,优选具有绝对温度系数tgr的量为0.5-3.5重量%。 f的共振频率不大于30ppm /℃

    Method for producing α-hydroxycarboxylate
    6.
    发明授权
    Method for producing α-hydroxycarboxylate 有权
    α-羟基羧酸盐的制备方法

    公开(公告)号:US07122698B2

    公开(公告)日:2006-10-17

    申请号:US10680919

    申请日:2003-10-08

    IPC分类号: C07C69/66

    CPC分类号: C07C67/40 C07C69/675

    摘要: The present invention provides a process for more efficiently producing an α-hydroxycarboxylic acid ester wherein side reactions due to the α-hydroxycarboxylic acid ester are inhibited or prevented in comparison with prior art production processes.The invention provides a process for producing an α-hydroxycarboxylic acid ester comprising Steps 1 to 3:Step 1. reacting, in the presence of oxygen, (i) a 1,2-diol with a 1,2-diol or (ii) a 1,2-diol with an alcohol to obtain a reaction product containing an α-hydroxycarboxylic acid ester;Step 2. separating the α-hydroxycarboxylic acid ester from the reaction product obtained in Step 1 by distillation under reduced pressure; andStep 3. feeding Step 1 with a mixture obtained by partially or entirely removing water from the reaction product, wherein the mixture contains an unreacted 1,2-diol and/or alcohol.

    摘要翻译: 本发明提供了一种更有效地制备α-羟基羧酸酯的方法,其中与现有技术的制备方法相比,由于α-羟基羧酸酯的副反应被抑制或被阻止。 本发明提供了一种制备α-羟基羧酸酯的方法,其包括步骤1至3:步骤1,在氧的存在下,(i)1,2-二醇与1,2-二醇或(ii) 具有醇的1,2-二醇以获得含有α-羟基羧酸酯的反应产物; 步骤2.通过减压蒸馏从步骤1中获得的反应产物中分离α-羟基羧酸酯; 和步骤3.向通过部分或全部从反应产物中除去水而获得的混合物进料步骤1,其中混合物含有未反应的1,2-二醇和/或醇。

    Glucose sensor
    7.
    发明授权
    Glucose sensor 有权
    葡萄糖传感器

    公开(公告)号:US06773564B1

    公开(公告)日:2004-08-10

    申请号:US09406832

    申请日:1999-09-28

    IPC分类号: G01N27327

    CPC分类号: C12Q1/006

    摘要: The present invention provides a high performance glucose sensor which can demonstrate high stability against preservation and produces only a low blank value. The glucose sensor comprises an electrically insulating base plate, an electrode system formed on the base plate, and a reaction layer which is formed in contact with or in the vicinity of the electrode system and contains at least a glucose dehydrogenase whose coenzyme is pyrrolo-quinoline quinone, the reaction layer further containing an additive such as phthalic acid.

    摘要翻译: 本发明提供了一种高性能葡萄糖传感器,其可以显示对保存的高稳定性并且仅产生低的空白值。 葡萄糖传感器包括电绝缘基板,形成在基板上的电极系统和与电极系统接触或附近形成的反应层,并且至少含有辅酶是吡咯并喹啉的葡萄糖脱氢酶 醌,反应层还含有邻苯二甲酸等添加剂。

    Method of producing diol derivatives
    8.
    发明申请
    Method of producing diol derivatives 审中-公开
    二醇衍生物的制备方法

    公开(公告)号:US20060079711A1

    公开(公告)日:2006-04-13

    申请号:US11290174

    申请日:2005-11-30

    IPC分类号: C07C69/66

    摘要: A method of producing a diol derivative efficiently and to high purity is provided. Specifically, the present invention relates to a method of producing a diol derivative having, as a fundamental step, a step of obtaining an α-hydroxycarboxylic acid ester by reacting (i) one or more 1,2-diols or (ii) a 1,2-diol and a primary alcohol as starting material(s) with oxygen in the presence of a catalyst comprising metal loaded on a carrier, further hydrolyzing the α-hydroxycarboxylic acid ester to obtain α-hydroxycarboxylic acid, and subjecting the α-hydroxycarboxylic acid to polycondensation.

    摘要翻译: 提供了有效且高纯度地生产二醇衍生物的方法。 具体地说,本发明涉及一种制备二醇衍生物的方法,其作为基本步骤,通过使(ⅰ)一种或多种1,2-二醇或(ⅱ)ⅰ-羟基羧酸酯反应获得α-羟基羧酸酯的步骤 ,二醇和伯醇作为起始原料,在含有负载在载体上的金属的催化剂存在下,用氧进一步水解α-羟基羧酸酯以获得α-羟基羧酸,并使α-羟基羧酸 酸缩聚。

    Method of purifying glyoxylic esters and distillation equipment for
purifying glyoxylic esters
    9.
    发明授权
    Method of purifying glyoxylic esters and distillation equipment for purifying glyoxylic esters 失效
    纯化乙醛酸酯的方法和纯化乙醛酸酯的蒸馏设备

    公开(公告)号:US6037489A

    公开(公告)日:2000-03-14

    申请号:US51302

    申请日:1998-04-10

    CPC分类号: C07C67/54

    摘要: A method for purifying glyoxylates includes (1) a coarse distillation process in which a crude glyoxylate in which water coexists is, in a film form, continuously subjected to coarse distillation, and (2) an azeotropic dehydration process in which the crude glyoxylate purified through the coarse distillation process is subjected to azeotropic dehydration in the presence of an azeotropic agent such as propyl acetate. By this method, high-purity glyoxylates can be efficiently and easily obtained at lower costs.

    摘要翻译: PCT No.PCT / JP97 / 03043 Sec。 371日期:1998年4月10日 102(e)1998年4月10日PCT PCT 1997年8月9日PCT公布。 出版物WO98 / 09936 1998年3月12日,乙醛酸酯的纯化方法包括(1)粗水蒸馏法,其中水共存的粗乙醛酸粗品是薄膜形式,连续进行粗蒸馏,和(2)共沸脱水方法,其中 通过粗蒸馏过程纯化的粗乙醛酸酯在共沸剂如乙酸丙酯存在下进行共沸脱水。 通过该方法,可以以更低的成本有效且容易地获得高纯度的乙醛酸酯。