Use of infrared spectroscopy for on-line process control and endpoint detection
    2.
    发明授权
    Use of infrared spectroscopy for on-line process control and endpoint detection 失效
    使用红外光谱仪进行在线过程控制和端点检测

    公开(公告)号:US06818450B2

    公开(公告)日:2004-11-16

    申请号:US10150030

    申请日:2002-05-17

    IPC分类号: C12P3300

    摘要: The present invention is directed to an analytical method for measuring the concentration of an N-(phosphonomethyl)iminodiacetic acid (“NPMIDA”) substrate, an N-(phosphonomethyl)glycine product, formaldehyde, formic acid, N-methyl-N-(phosphonomethyl)glycine (“NMG”), N-methyl-aminomethylphosphonic acid (MAMPA) or aminomethylphosphonic acid (“AMPA”)) in an aqueous mixture thereof, using infrared spectroscopy. The present invention is also directed to a process for oxidizing an N-(phosphonomethyl)iminodiacetic acid substrate to form a N-(phosphonomethyl)glycine product, and as part of the process, measuring the concentration of at least one reactant, product or byproduct of the oxidation reaction using the analytical method of the present invention and controlling the oxidation process in response to the measurement taken.

    摘要翻译: 本发明涉及一种用于测量N-(膦酰基甲基)亚氨基二乙酸(“NPMIDA”)底物,N-(膦酰基甲基)甘氨酸产物,甲醛,甲酸,N-甲基-N-( 膦酰基甲基)甘氨酸(“NMG”),N-甲基 - 氨基甲基膦酸(MAMPA)或氨基甲基膦酸(“AMPA”))在其水性混合物中。 本发明还涉及一种氧化N-(膦酰基甲基)亚氨基二乙酸底物以形成N-(膦酰基甲基)甘氨酸产物的方法,作为该方法的一部分,测量至少一种反应物,产物或副产物的浓度 的氧化反应使用本发明的分析方法,并且响应于测量而控制氧化过程。

    Process for the preparation of carboxylic anhydrides from olefinic
hydrocarbons
    3.
    发明授权
    Process for the preparation of carboxylic anhydrides from olefinic hydrocarbons 失效
    从烯烃制备羧酸酐的方法

    公开(公告)号:US3989751A

    公开(公告)日:1976-11-02

    申请号:US531946

    申请日:1974-12-12

    IPC分类号: C07C51/14 C07C51/54 C07C51/56

    CPC分类号: C07C51/54 C07C51/14 C07C51/56

    摘要: The present invention relates to an improved process for the preparation of organic carboxylic acid anhydrides, specifically by the reaction of ethylenically unsaturated compounds having 2 to 30 carbon atoms with carbon monoxide and carboxylic acids or substances which yield carboxylic acids under reaction conditions at a temperature of 50.degree. C to 300.degree. C and a partial pressure of carbon monoxide of from 1 to 200 atm. in the presence of a catalyst composition essentially comprised of1. a cobalt or nickel compound, and2. an iodide component subject to the conditions that the atomic ratio of iodide to cobalt or nickel is from 1:1 to 300:1,3. a catalyst preserver or regenerator component selected from the group consisting of hydrogen or a compound capable of giving rise to hydrogen under the reaction conditions. The process is particularly suited to the production of propionic anhydride.

    摘要翻译: 本发明涉及一种制备有机羧酸酐的改进方法,特别是通过具有2-30个碳原子的烯属不饱和化合物与一氧化碳和羧酸或在反应条件下在温度为 50℃至300℃,一氧化碳分压为1至200atm。 在催化剂组合物的存在下,基本上由以下组成的催化剂组合物1.钴或镍化合物和2.根据碘化物对钴或镍的原子比从1:1至300的条件的一种碘化物组分:

    Process for producing N-phosphonomethyl glycine
    7.
    发明授权
    Process for producing N-phosphonomethyl glycine 失效
    N-膦酰基甲基甘氨酸的制备方法

    公开(公告)号:US3969398A

    公开(公告)日:1976-07-13

    申请号:US465976

    申请日:1974-05-01

    申请人: Arnold Hershman

    发明人: Arnold Hershman

    CPC分类号: C07F9/3813

    摘要: A process for the production of N-phosphonomethyl glycine by the oxidation of N-phosphonomethylimino diacetic acid utilizing a molecular oxygen-containing gas as the oxidant in the presence of a catalyst consisting essentially of activated carbon. The N-phosphonomethyl glycine produced is useful as a herbicide or plant growth regulant.

    摘要翻译: 通过在基本上由活性炭组成的催化剂存在下,通过使用含分子氧的气体作为氧化剂,通过N-膦酰基甲基亚氨基二乙酸的氧化来生产N-膦酰基甲基甘氨酸的方法。 产生的N-膦酰基甘氨酸可用作除草剂或植物生长调节剂。