利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

181 条记录 (耗时 0.028 秒)

    Solid phase extraction method for obtaining high-purity unsaturated compounds or derivatives of said compounds
    11.
    发明授权
    Solid phase extraction method for obtaining high-purity unsaturated compounds or derivatives of said compounds 失效
    用于获得高纯度不饱和化合物或所述化合物的衍生物的固相萃取方法

    公开(公告)号：US07365219B2

    公开(公告)日：2008-04-29

    申请号：US10479620

    申请日：2002-06-05

    申请人： Dirk Fabritius ,  Silke Reimann ,  Doreen Neumann ,  Daniel Minoer

    发明人： Dirk Fabritius ,  Silke Reimann ,  Doreen Neumann ,  Daniel Minoer

    IPC分类号： C07C67/52

    CPC分类号： C07C51/47 ,  C07C67/56 ,  C07C57/12 ,  C07C57/02 ,  C07C69/587

    摘要： The invention relates to a novel extraction method for obtaining at least one unsaturated, optionally derivatized compound, from mixtures of said compounds with other less saturated constituents, e.g. for obtaining polyunsaturated fatty acids or the derivatives thereof from mixtures with saturated and/or less unsaturated, optionally derivatized fatty acids, by means of selective complexation with a cation exchanger which is partially or fully charged with silver ions, and subsequent decomplexation.

    摘要翻译： 本发明涉及从所述化合物与其它较不饱和成分的混合物获得至少一种不饱和的，任选衍生的化合物的新的提取方法。 通过与部分或完全带有银离子的阳离子交换剂的选择性络合以及随后的解络合来获得具有饱和和/或不饱和的任选衍生的脂肪酸的混合物的多不饱和脂肪酸或其衍生物。

    Method for obtaining 5-halogenolaevulinic acid alkyl esters
    16.
    发明申请
    Method for obtaining 5-halogenolaevulinic acid alkyl esters 失效
    获得5-卤代乙酰丙酸烷基酯的方法

    公开(公告)号：US20050070727A1

    公开(公告)日：2005-03-31

    申请号：US10496591

    申请日：2002-11-22

    申请人： Dr Sven Aldenkortt

    发明人： Dr Sven Aldenkortt

    IPC分类号： C07C67/03 ,  C07C67/307 ,  C07C67/317 ,  C07C67/52 ,  C07C51/16 ,  C07C51/34

    CPC分类号： C07C67/317 ,  C07C67/03 ,  C07C67/307 ,  C07C67/52 ,  C07C69/716

    摘要： A method for obtaining a 5-bromolevulinic acid methyl ester or a 5-chlorolevulinic acid methyl ester from either a bromination mixture or a chlorination mixture, containing either a 5-bromo-levulinic acid methyl ester or a 5-chlorolevulinic acid methyl ester, respectively, produced by either brominating or chlorinating levulinic acid or a levulinic acid methyl ester, and further including the steps of dissolving the bromination or chlorination mixture in an organic solvent or solvent mixture and cooling the solution, preferably to −20° C.-−40° C., with the 5-bromolevulinic acid methyl ester or 5-chlorolaevulinic acid methyl ester being crystallized out of the solution. The 5-bromolevulinic acid methyl ester or 5-chlorolevulinic acid is then isolated by draining off the solution with the remaining bromination mixture or chlorination mixture, as appropriate.

    摘要翻译： 分别从含有5-溴 - 乙酰丙酸甲酯或5-氯乙酰丙酸甲酯的溴化混合物或氯化混合物中得到5-溴乙酰丙酸甲酯或5-氯乙酰丙酸甲酯的方法 通过溴化或氯化乙酰丙酸或乙酰丙酸甲酯生产，还包括将溴化或氯化混合物溶解在有机溶剂或溶剂混合物中并将溶液冷却至-20℃的步骤-40 与5-溴乙酰丙酸甲酯或5-氯代乙酰丙酸甲酯在溶液中结晶出来。 然后根据需要通过用剩余的溴化混合物或氯化混合物排出溶液来分离5-溴乙酰丙酸甲酯或5-氯乙酰丙酸。

    Process for the preparation of 3-acetoxy-2-methylbenzoyl chloride
    19.
    发明授权
    Process for the preparation of 3-acetoxy-2-methylbenzoyl chloride 失效
    3-乙酰氧基-2-甲基苯甲酰氯的制备方法

    公开(公告)号：US6051732A

    公开(公告)日：2000-04-18

    申请号：US114604

    申请日：1998-07-13

    申请人： Robert Cosmo ,  Andreas Dierdorf

    发明人： Robert Cosmo ,  Andreas Dierdorf

    IPC分类号： C07C69/63 ,  C07C51/00 ,  C07C67/08 ,  C07C67/287 ,  C07C67/52 ,  C07C69/157 ,  C07C69/017

    CPC分类号： C07C51/00 ,  C07C67/08 ,  C07C67/287

    摘要： The present invention relates to a process for the preparation of 3-acetoxy-2-methylbenzoyl chloride by reacting an alkali metal salt of 3-aminonaph-thalene-1,5-disulfonic acid with alkali metal hydroxide and water in the weight ratio 1:(1 to 1.6):(1 to 1.6) at 220 to 320.degree. C. to give the dialkali metal salt of the 3-hydroxy-2-methylbenzoic acid, separating off insoluble constituents from the reaction mixture, then adjusting the reaction mixture to a pH of 11.5 to 13.5 by addition of acid and reacting with acetic anhydride at -5 to +25.degree. C., precipitating the 3-acetoxy-2-methylbenzoic acid by addition of acid, separating off the 3-acetoxy-2-methylbenzoic acid and reacting it with an inorganic acid chloride to give 3-acetoxy-2-methylbenzoyl chloride.

    摘要翻译： 本发明涉及通过使3-氨基萘酚-1,5-二磺酸的碱金属盐与碱金属氢氧化物和水的重量比1:1的反应制备3-乙酰氧基-2-甲基苯甲酰氯的方法。 （1至1.6）：（1至1.6）在220至320℃下反应，得到3-羟基-2-甲基苯甲酸的二碱金属盐，从反应混合物中分离不溶成分，然后将反应混合物调至 通过加入酸，pH为11.5至13.5，并在-5至+25℃下与乙酸酐反应，通过加入酸沉淀3-乙酰氧基-2-甲基苯甲酸，分离出3-乙酰氧基-2-甲基苯甲酸 酸并与无机酰氯反应，得到3-乙酰氧基-2-甲基苯甲酰氯。

    Processes for the production of high-purity dimethyl 2, 6-naphthalenedicarboxylate and naphthalenedicarboxylic acid
    20.
    发明授权
    Processes for the production of high-purity dimethyl 2, 6-naphthalenedicarboxylate and naphthalenedicarboxylic acid 失效
    制备高纯度2,6-二甲酸二甲酯和萘二甲酸二甲酯的方法

    公开(公告)号：US6013831A

    公开(公告)日：2000-01-11

    申请号：US69815

    申请日：1998-04-30

    申请人： Hiroshi Machida ,  Fumiya Zaima ,  Kengi Nakaya ,  Kazuo Tanaka

    发明人： Hiroshi Machida ,  Fumiya Zaima ,  Kengi Nakaya ,  Kazuo Tanaka

    IPC分类号： C07C51/265 ,  C07C67/08 ,  C07C67/52 ,  C07C67/48

    CPC分类号： C07C67/08 ,  C07C51/265 ,  C07C67/52

    摘要： A process for the production of high-purity dimethyl 2,6-naphthalenedicarboxylate, which comprises esterifying 2,6-naphthalenedicarboxylic acid obtained by liquid phase oxidation of 2,6-dialkylnaphthalene with molecular oxygen in the presence of an oxidation catalyst, with methanol and then purifying a crude ester formed by the esterification, the crude ester being purified in the presence of an aromatic hydrocarbon as a solvent, in which impurities contained in a reaction product obtained by the esterification of 2,6-naphthalenedicarboxylic acid prepared by the liquid phase oxidation of 2,6-dialkylnaphthalene are effectively removed with simple procedures, oxidation catalyst metals are recovered, a crystal of naphthalenedicarboxylic acid formed by the oxidation of dialkylnaphthalene and/or its oxide derivative can be easily separated, and the oxidation catalyst to be brought into the step of producing dimethyl naphthalenedicarboxylate is recovered in the process of the production of naphthalenedicarboxylic acid and effectively used in the process of the production of naphthalenedicarboxylic acid.

    摘要翻译： 一种制备高纯度2,6-萘二甲酸二甲酯的方法，其包括在氧化催化剂存在下，通过用分子氧将2,6-二烷基萘液相氧化得到的2,6-萘二羧酸与甲醇和 然后纯化通过酯化形成的粗酯，粗酯在作为溶剂的芳族烃存在下纯化，其中通过由液相制备的2,6-萘二甲酸酯化得到的反应产物中所含的杂质 通过简单的方法有效地除去2,6-二烷基萘的氧化，回收氧化催化剂金属，可以容易地分离通过二烷基萘和/或其氧化物衍生物的氧化形成的萘二甲酸的结晶，并将氧化催化剂 在生产n的过程中回收生产二甲基萘二甲酸二甲酯的步骤 邻苯二甲酸二羧酸，有效用于生产萘二羧酸的方法。