中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

51 records (took 0.018 seconds)

    VERFAHREN ZUR HERSTELLUNG VON WÄSSRIGEN LÖSUNGEN VON METHYLGLYCIN-N,N-DIESSIGSÄURE-TRIALKALIMETALLSALZEN
    2.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON WÄSSRIGEN LÖSUNGEN VON METHYLGLYCIN-N,N-DIESSIGSÄURE-TRIALKALIMETALLSALZEN 有权
    VERFAHREN ZUR HERSTELLUNG VONWÄSSRIGENLÖSUNGENVON METHYLGLYCIN-N，N-DIESSIGSÄURE-TRIALKALIMETALLSALZEN

    公开(公告)号：EP2694468A1

    公开(公告)日：2014-02-12

    申请号：EP12711135.9

    申请日：2012-03-20

    Applicant: BASF SE

    Inventor： OFTRING, Alfred ,  BRAUN, Gerold ,  LAUTERBACH, Arnulf

    IPC: C07C227/26 ,  C07C229/16

    CPC classification number: C07C227/26 ,  C07C229/16

    Abstract: The invention relates to a method for producing aqueous solutions of methylglycine-N,N-diacetic acid trialkali metal salts at a high yield and purity using Strecker synthesis, starting from an aqueous solution of α-alanine, by reacting same with formaldehyde and hydrocyanic acid in an aqueous solution to form α-alanine N,N-diacetonitrile in a reaction unit, and saponifying same with a base to form the corresponding methylglycine-N,N-diacetic acid trialkali metal salt. The method is characterized in that the α-alanine is partially neutralized, and the addition of formaldehyde and hydrocyanic acid for reacting into α-alanine-N,N-diacetonitrile is controlled such that the concentration of free hydrocyanic acid in the liquid reaction mixture is limited at all times so that secondary reactions, in particular into formaldehyde cyanohydrin, including subsequent reactions of the formaldehyde cyanohydrin as well as the polymerization of hydrocyanic acid occur only to such an extent that the specification requirements for the methylglycine-N,N-diacetic acid trialkali metal salt, in particular with respect to the nitrilotriacetic acid content and color, are met.

    Abstract translation: 本发明涉及使用Strecker合成法，从α-丙氨酸的水溶液开始，通过与甲醛和氢氰酸反应，以高产率和纯度生产甲基甘氨酸-N，N-二乙酸三烷基金属盐的水溶液的方法 在水溶液中在反应单元中形成α-丙氨酸N，N-二乙腈，并用碱皂化，形成相应的甲基甘氨酸-N，N-二乙酸三碱金属盐。 该方法的特征在于α-丙氨酸被部分中和，并且控制加入甲醛和氢氰酸以反应成α-丙氨酸-N，N-二乙腈，使得液体反应混合物中游离氢氰酸的浓度为 所有时间都受到限制，使得二次反应，特别是甲醛氰醇，包括甲醛氰醇的后续反应以及氢氰酸的聚合仅发生到甲基甘氨酸-N，N-二乙酸的规范要求 三碱金属盐，特别是关于次氮基三乙酸含量和颜色。

    3-AMINOMETHYL-1-CYCLOHEXYLAMIN UND EIN VERFAHREN ZU DESSEN HERSTELLUNG
    9.
    发明公开
    3-AMINOMETHYL-1-CYCLOHEXYLAMIN UND EIN VERFAHREN ZU DESSEN HERSTELLUNG 审中-公开

    公开(公告)号：EP2310354A2

    公开(公告)日：2011-04-20

    申请号：EP09780486.8

    申请日：2009-07-13

    Applicant: BASF SE

    Inventor： ERNST, Martin ,  DAHMEN, Kirsten ,  OFTRING, Alfred

    IPC: C07C211/36

    CPC classification number: C07C211/36 ,  C07B2200/09 ,  C07C2601/14

    Abstract: The invention relates to 3-aminomethyl-1-cyclohexylamine and a method for the production thereof by a) reacting cyclohexenone with hydrogen cyanide in the presence of a basic catalyst, b) reacting the cyclohexanone nitrile obtained in step a) with ammonia in the presence of an imine-forming catalyst, and c) reacting the reaction mixture that is obtained in step b) and contains 3-cyanocyclohexylimine with hydrogen and ammonia on hydrogenation catalysts. The invention further relates to the use of 3-aminomethyl-1-cyclohexylamine as a curing agent for epoxy resins, as an intermediate product when producing diisocyanates, as an initiator entity when producing polyetherols, and/or as a monomer for producing polyamides.

    Abstract translation: 本发明涉及3-氨基甲基-1-环己基胺及其制备方法，其通过以下步骤a）在碱性催化剂存在下使环己烯酮与氰化氢反应，b）在步骤a）中获得的环己腈与氨在存在下反应 的亚胺形成催化剂，和c）使步骤b）中获得的含3-氰基环己基亚胺的反应混合物与氢气和氨在氢化催化剂上反应。 本发明还涉及3-氨基甲基-1-环己胺作为环氧树脂的硬化剂的用途，作为制备二异氰酸酯的中间体，作为制备聚乙烯醇和/或聚酰胺制备单体的起始物。

    VERFAHREN ZUR HERSTELLUNG VON AMINODICARBONSÄURE-N,N-DIESSIGSÄUREN
    10.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON AMINODICARBONSÄURE-N,N-DIESSIGSÄUREN 有权
    VERFAHREN ZUR HERSTELLUNG VONAMINODICARBONSÄURE-N，N-DIESSIGSÄUREN

    公开(公告)号：EP2262760A1

    公开(公告)日：2010-12-22

    申请号：EP09716225.9

    申请日：2009-03-02

    Applicant: BASF SE

    Inventor： OFTRING, Alfred ,  STAMM, Armin ,  WIRSING, Friedrich ,  BRAUN, Gerold

    IPC: C07C227/26 ,  C07C229/24

    CPC classification number: C07C227/18 ,  C07C229/24

    Abstract: The present invention relates to a method for the production of aminodicarboxylic acid-N,N,diacetic acids of the general Formula I, wherein X independently of one another represents hydrogen or an alkali metal and n represents a number 1 or 2. Furthermore, the invention relates to aminodicarboxylic acid-N,N-diacetic acids of high purity. The inventive method comprises the following steps: A.) reacting an aminodicarboxylic acid of the general Formula II, wherein X and n have the aforementioned meanings, with 0.8 to 1.2 mole equivalents of formaldehyde and with 0.8 to 1.2 mole equivalents of hydrocyanic acid; b) reacting the reaction products of step a) with 0.8 to 1.2 mole equivalents of hydrocyanic acid and with 0.8 to 1.2 mole equivalents of formaldehyde; c) hydrolyzing in the reaction product obtained in step b).

    Abstract translation: 提供了制备式（I）的氨基二羧酸N，N-二乙酸的方法，其中X独立地为氢或碱金属，n为1或2.具有高纯度的氨基二羧酸-N，N-二乙酸 可以产生。 该方法包括：a）使氨基二羧酸与0.8至1.2摩尔当量的甲醛和0.8至1.2摩尔当量的氢氰酸反应; b）使a）的反应产物与0.8至1.2摩尔当量的氢氰酸和0.8至1.2摩尔当量的甲醛反应; c）在b）中得到的反应产物中水解。

Patent Agency Ranking