METHOD FOR ISOLATING METHYLGLYCINENITRILE-N,N-DIACETONITRILE
    1.
    发明申请
    METHOD FOR ISOLATING METHYLGLYCINENITRILE-N,N-DIACETONITRILE 审中-公开
    用于分离甲基丝氨酸N,N-二乙基纤维素的方法

    公开(公告)号:US20120184769A1

    公开(公告)日:2012-07-19

    申请号:US13498825

    申请日:2010-09-29

    IPC分类号: C07C253/34

    CPC分类号: C07C253/34 C07C255/25

    摘要: A method for isolating methylglycinenitrile-N,N-diacetonitrile (MGDN) from an aqueous mixture comprising MGDN is provided The method comprises cooling the aqueous mixture in one or more steps In one of these steps the mixture is cooled at a cooling rate of at least 20 K/h from a temperature above the solidification point of MGDN to a temperature below the solidification point of MGDN The method is implemented continuously

    摘要翻译: 提供了从包含MGDN的含水混合物中分离甲基亚氨基腈-N,N-二乙腈(MGDN)的方法。该方法包括在一个或多个步骤中冷却含水混合物。在这些步骤之一中,将混合物以至少的冷却速率 从MGDN的凝固点以上的温度20K / h到低于MGDN凝固点的温度。该方法连续实施

    METHOD FOR THE PRODUCTION OF AMINODICARBOXYLIC ACID-N,N-DIACETIC ACIDS
    2.
    发明申请
    METHOD FOR THE PRODUCTION OF AMINODICARBOXYLIC ACID-N,N-DIACETIC ACIDS 有权
    用于生产氨基甲酰氧基-N,N-二乙酸的方法

    公开(公告)号:US20110004016A1

    公开(公告)日:2011-01-06

    申请号:US12919149

    申请日:2009-03-02

    IPC分类号: C07C227/18 C07C229/24

    CPC分类号: C07C227/18 C07C229/24

    摘要: 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).

    摘要翻译: 本发明涉及一种制备通式I的氨基二羧酸-N,N-二乙酸的方法,其中X彼此独立地表示氢或碱金属,n表示数1或2.此外, 本发明涉及高纯度的氨基二羧酸-N,N-二乙酸。 本发明方法包括以下步骤:A.将具有上述含义的X和n的通式II的氨基二羧酸与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)使步骤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)在步骤b)中获得的反应产物中水解。

    Method for producing o-chloromethyl benzenecarbonyl chlorides
    4.
    发明授权
    Method for producing o-chloromethyl benzenecarbonyl chlorides 失效
    邻苯甲酰氯的制备方法

    公开(公告)号:US06734322B1

    公开(公告)日:2004-05-11

    申请号:US10130826

    申请日:2002-05-23

    IPC分类号: C07C5158

    CPC分类号: C07C51/09 C07C63/04

    摘要: The invention relates to a method for producing o-choromethyl benzenecarbonyl chlorides of formula (I), wherein R1-R4 can be the same or different and stand for hydrogen, C1-C4-alkyl, halogen or trifluoromnethyl, by converting benzocondensed lactones of formula (II), wherein R1-R4 have the aforementioned meaning, with gaseous or liquid phosgene and the dimers or trimers thereof. The inventive method is characterized in that the conversion is carried out in the presence of catalytical amounts of a Lewis acid and catalytical amounts of a phosgenation catalyst

    摘要翻译: 本发明涉及一种制备式(I)的邻氯甲基苯甲酰氯的方法,其中R 1 -R 4可以相同或不同,代表氢,C 1 -C 4 - 烷基,卤素或三氟甲基, 通过用气态或液体光气及其二聚体或三聚体转化其中R 1 -R 4具有上述含义的式(II)的苯并二化内酯。 本发明的方法的特征在于转化在催化量的路易斯酸和催化量的光气化催化剂

    Method for producing chlorocarboxylic acid chlorides
    6.
    发明授权
    Method for producing chlorocarboxylic acid chlorides 失效
    氯代羧酸氯化物的制备方法

    公开(公告)号:US06262300B1

    公开(公告)日:2001-07-17

    申请号:US09529811

    申请日:2000-04-20

    IPC分类号: C07C5158

    CPC分类号: C07C51/58 C07C53/50

    摘要: The present invention provides process for the preparation of chlorocarbonyl chlorides of the formula I R1—CHCl—Y—COCl  (I), where R1 is for example hydrogen or C1- to C20-alkyl and Y is for example a saturated or mono- or polyolefinically unsaturated C2-C8-alkylene chain, by reacting lactones with a chlorinating agent in the presence of a urea compound.

    摘要翻译: 本发明提供制备式I的氯代羰基氯的方法,其中R 1是例如氢或C 1 -C 20烷基,Y是例如饱和或单或者不饱和的C 2 -C 8 - 亚烷基链,通过使内酯与 在尿素化合物的存在下进行氯化剂。

    Method for producing methylglycine-N,N-diethanoic acid-trialkali metal salts with a low by-product content
    7.
    发明授权
    Method for producing methylglycine-N,N-diethanoic acid-trialkali metal salts with a low by-product content 有权
    具有低副产物含量的甲基甘氨酸-N,N-二乙酸 - 三烷基金属盐的制备方法

    公开(公告)号:US07671234B2

    公开(公告)日:2010-03-02

    申请号:US11913597

    申请日:2006-05-02

    IPC分类号: C07C227/26 C07C229/16

    CPC分类号: C07C227/26 C07C229/16

    摘要: The invention relates to a process for preparing low-by-product, light-color methylglycine-N,N-diacetic acid tri(alkali metal) salt by alkaline hydrolysis of methylglycinediacetonitrile (MGDN), comprising the steps in the sequence (a) to (f): (a) mixing of MGDN with aqueous alkali at a temperature of ≦30° C.; (b) allowing the aqueous alkaline MGDN suspension to react at a temperature in the range from 10 to 30° C. over a period of from 0.1 to 10 h to form a solution; (c) allowing the solution from step (b) to react at a temperature in the range from 30 to 40° C. over a period of from 0.1 to 10 h; (d) optionally allowing the solution from step (c) to react at a temperature in the range from 50 to 80° C. over a period of from 0.5 to 2 h; (e) optionally allowing the solution from step (c) or (d) to react at a temperature in the range from 110 to 200° C. over a period of from 5 to 60 min; (f) hydrolysis and removal of ammonia of the solution obtained in step (c), (d) or (e) by stripping at a temperature of from 90 to 105° C.

    摘要翻译: 本发明涉及通过甲基甘氨二乙腈(MGDN)的碱水解制备低副产物,浅色甲基甘氨酸-N,N-二乙酸三(碱金属)盐的方法,包括步骤(a)至 (f):(a)在温度为30℃的温度下,将MGDN与碱水溶液混合; (b)使含水碱性MGDN悬浮液在10至30℃的温度下反应0.1至10小时以形成溶液; (c)允许来自步骤(b)的溶液在0.1至10小时的时间内在30至40℃的温度下反应; (d)任选地允许步骤(c)的溶液在0.5至2小时的时间内在50至80℃的温度下反应; (e)任选地允许来自步骤(c)或(d)的溶液在110至200℃的温度下在5至60分钟的时间内反应; (f)通过在90至105℃的温度下汽提来水解和除去在步骤(c),(d)或(e)中获得的溶液中的氨。

    Method For Producing Methylglycine-N,N-Diethanoic Acid-Trialkali Metal Salts With A Low By-Product Content
    8.
    发明申请
    Method For Producing Methylglycine-N,N-Diethanoic Acid-Trialkali Metal Salts With A Low By-Product Content 有权
    生产含有低副产物含量的甲基甘氨酸-N,N-二氢化萘 - 三碱金属盐的方法

    公开(公告)号:US20080194873A1

    公开(公告)日:2008-08-14

    申请号:US11913597

    申请日:2006-05-02

    IPC分类号: C07C229/24

    CPC分类号: C07C227/26 C07C229/16

    摘要: The invention relates to a process for preparing low-by-product, light-color methylglycine-N,N-diacetic acid tri(alkali metal) salt by alkaline hydrolysis of methylglycinediacetonitrile (MGDN), comprising the steps in the sequence (a) to (f): (a) mixing of MGDN with aqueous alkali at a temperature of ≦30° C.; (b) allowing the aqueous alkaline MGDN suspension to react at a temperature in the range from 10 to 30° C. over a period of from 0.1 to 10 h to form a solution; (c) allowing the solution from step (b) to react at a temperature in the range from 30 to 40° C. over a period of from 0.1 to 10 h; (d) optionally allowing the solution from step (c) to react at a temperature in the range from 50 to 80° C. over a period of from 0.5 to 2 h; (e) optionally allowing the solution from step (c) or (d) to react at a temperature in the range from 110 to 200° C. over a period of from 5 to 60 min; (f) hydrolysis and removal of ammonia of the solution obtained in step (c), (d) or (e) by stripping at a temperature of from 90 to 105° C.

    摘要翻译: 本发明涉及通过甲基甘氨二乙腈(MGDN)的碱水解制备低副产物,浅色甲基甘氨酸-N,N-二乙酸三(碱金属)盐的方法,包括步骤(a)至 (f):(a)在<= 30℃的温度下将MGDN与碱水溶液混合; (b)使含水碱性MGDN悬浮液在10至30℃的温度下反应0.1至10小时以形成溶液; (c)允许来自步骤(b)的溶液在0.1至10小时的时间内在30至40℃的温度下反应; (d)任选地允许步骤(c)的溶液在0.5至2小时的时间内在50至80℃的温度下反应; (e)任选地允许来自步骤(c)或(d)的溶液在110至200℃的温度下在5至60分钟的时间内反应; (f)通过在90至105℃的温度下汽提来水解和除去在步骤(c),(d)或(e)中获得的溶液中的氨。

    Method for the intrinsically safe handling of 3-chloropropyne
    9.
    发明授权
    Method for the intrinsically safe handling of 3-chloropropyne 失效
    本质安全处理3-氯丙炔的方法

    公开(公告)号:US07078574B2

    公开(公告)日:2006-07-18

    申请号:US10475213

    申请日:2002-04-17

    IPC分类号: C07C17/42

    CPC分类号: C07C17/16 C07C17/42 C07C21/22

    摘要: A method is provided for the intrinsically safe handling of 3-chloropropyne in the presence of a diluent with a boiling point ranging from −50° C. (223 K) to 200° C. (473 K) under atmospheric pressure, wherein the concentration of 3-chloropropyne in the liquid phase and in the gas phase is kept below the concentrations capable of deflagration by means of the type and amount of the diluent, the temperature and the total system pressure, together with the use of a 3-chloropropyne prepared, stored or transported in this way in the synthesis of dyestuffs, pharmaceutical and agricultural active ingredients, electroplating auxiliaries, disinfectants, steroids and growth hormones.

    摘要翻译: 在常压下,在沸点范围为-50℃(223K)至200℃(473K)的稀释剂存在下,提供了一种本质安全处理3-氯丙炔的方法,其中浓度 的3-氯丙炔在液相中和在气相中通过稀释剂的类型和量,温度和总体系压力保持低于能够爆燃的浓度,以及使用制备的3-氯丙炔 以这种方式储存或运输,合成染料,药物和农业活性成分,电镀助剂,消毒剂,类固醇和生长激素。

    Method for purifying acid chlorides
    10.
    发明授权
    Method for purifying acid chlorides 有权
    酰氯的纯化方法

    公开(公告)号:US06727384B1

    公开(公告)日:2004-04-27

    申请号:US10070762

    申请日:2002-03-12

    IPC分类号: C07C5158

    CPC分类号: C07C51/64 C07C53/42

    摘要: Process for the purification of carbonyl chlorides which have been prepared by reacting carboxylic acids with phosgene or thionyl chloride in the presence of a catalyst adduct, in which the carbonyl chlorides are treated with a hydrohalide of carboxamides of the formula (I) in which R1 is hydrogen or C1- to C3-alkyl; R2 and R3 independently of one another are C1- to C4-alkyl, or R2 and R3 together are a C4- or C5-alkylene chain, and the carbonyl chloride purified in this way is isolated by separation off from the carboxamide hydrohalide phase.

    摘要翻译: 通过使羧酸与光气或亚硫酰氯在催化剂加合物存在下反应制备的羰基氯的方法,其中羰基氯用式(I)的羧酰胺的氢卤化物处理,其中R 1, 1>是氢或C 1至C 3 - 烷基; R 2和R 3彼此独立地为C 1至C 4 - 烷基,或R 2和R 3一起是C 4 - 或C 5-亚烷基链,并且以这种方式纯化的羰基氯 通过与羧酰胺氢卤酸盐相分离而分离。