Removal of halides from halide-containing nitrile mixtures
    1.
    发明授权
    Removal of halides from halide-containing nitrile mixtures 失效
    从含卤素腈混合物中除去卤化物

    公开(公告)号:US6153784A

    公开(公告)日:2000-11-28

    申请号:US24457

    申请日:1998-02-17

    摘要: Halides are removed from halide-containing nitrile mixtures by(a) thermally treating the halide-containing nitrile mixture,(b) subsequently adding a base to the thermally treated nitrile mixture and(c) subsequently separating off the base from the nitrile mixture.Amines are prepared by(A) reacting alkyl halides with metal cyanides in an at least two-phase reaction medium in the presence of halide-containing phase-transfer catalysts to give alkanenitriles,(B) separating off the resulting halide-containing alkanenitrile mixture phase and(C) further treating the halide-containing alkanenitrile mixture phase, as described in the stages(a)-(c) removing halides from halide-containing nitrile mixtures and(d) hydrogenating nitrites obtained in stage (c) to give amines, in the presence of suspended or fixed-bed catalysts.

    摘要翻译: 通过(a)热处理含卤素腈混合物,(b)随后向经热处理的腈混合物中加入碱,和(c)随后将腈与腈混合物分离,从卤化物腈混合物中除去卤化物。 胺通过(A)在卤化物相转移催化剂存在下在至少两相反应介质中将烷基卤与金属氰化物反应得到烷腈,(B)将所得的含卤素的烷腈混合物相分离 (C)进一步处理含卤化物的腈腈混合物相,如步骤(a) - (c)所述从卤化物腈混合物中除去卤化物,和(d)氢化阶段(c)中得到的亚硝酸盐,得到胺, 在悬浮或固定床催化剂存在下。

    Method for producing the tautomeric form of (1) of 2,4,6-trianilino-p-(carbo-1′-ethylhexyl-1′oxyl)-1, 3, 5-triazine
    6.
    发明授权
    Method for producing the tautomeric form of (1) of 2,4,6-trianilino-p-(carbo-1′-ethylhexyl-1′oxyl)-1, 3, 5-triazine 有权
    制备(1)2,4,6-三苯胺基 - 对 - (碳-1'-乙基己基-1'-氧基)-1,3,5-三嗪的互变异构形式的方法

    公开(公告)号:US07074922B2

    公开(公告)日:2006-07-11

    申请号:US10503305

    申请日:2003-02-26

    IPC分类号: C07D251/70 A61K7/42

    CPC分类号: C07D251/70

    摘要: The invention relates to a method for producing the tautomeric form (I) of 2,4,6-trianilino-p-(carbo-2′-ethylhexyl-1′-oxy)-1,3,5-triazine by the crystallization of a tautoner mixture in the presence of one or more solvents selected from the group consisting of aliphatic alcohol having 2 8 C-atoms made of aliphatic alcohol, aliphatic carboxylic acid alkyl esters having a total of between 3–10 C-atoms, aromatic carboxylic acid alkyl esters having a total of between 8–12 C-atoms, aliphatic carboxylic acid esters having a total of between 3 9 C-atoms, carboxylic acid nitriles having a total of between 2–8 C-atoms, dialkylketones having a total of between 3–6 C-atoms and aliphatic sulphones having a total of between 3–6 C-atoms. The solvent or solvent mixture can additionally contain up to 30 wt % of a hydrocarbon (I) acts as a light protecting agent in cosmetic preparations.

    摘要翻译: 本发明涉及通过结晶形成2,4,6-三苯胺基 - 对 - (碳 - 2'-乙基己基-1'-氧)-1,3,5-三嗪的互变异构体形式(I)的方法, 在一种或多种选自由脂族醇制成的具有28个碳原子的脂族醇,总共3-10个碳原子的脂族羧酸烷基酯,芳族羧酸 总共有8-12个C原子的烷基酯,总共有3 9个C原子的脂族羧酸酯,总共有2-8个C原子的羧酸腈,总共有2-8个碳原子之间的二烷基酮 3-6个C原子和总共3-6个碳原子的脂肪族砜。 溶剂或溶剂混合物可另外含有至多30重量%的化合物(I)作为化妆品制剂中的防光剂。

    Method for producing the automeric form of (1) of 2, 4, 6-trianilino-p- (carbo-2'-ethyl-heyk-1'oxyl)-1, 2, 5-triazine
    7.
    发明申请
    Method for producing the automeric form of (1) of 2, 4, 6-trianilino-p- (carbo-2'-ethyl-heyk-1'oxyl)-1, 2, 5-triazine 有权
    (1)2,4,6-三苯胺基 - 对 - (碳 - 2'-乙基 - 喔基-1'-氧代)-1,2,5-三嗪的自身形式的方法

    公开(公告)号:US20050143577A1

    公开(公告)日:2005-06-30

    申请号:US10503305

    申请日:2003-02-26

    CPC分类号: C07D251/70

    摘要: Process for the preparation of the tautomeric form I of 2,4,6-trianilino-p-(carbo-2′-ethylhexyl-1′-oxy)-1,3,5-triazine by crystallization from a tautomer mixture in the presence of one or more solvents chosen from the group consisting of aliphatic alcohols having 2 to 8 carbon atoms, aliphatic carboxylic alkyl esters having a total of 3 to 10 carbon atoms, aromatic carboxylic alkyl esters having a total of 8 to 12 carbon atoms, aliphatic carbonic esters having a total of 3 to 9 carbon atoms, carbonitriles having a total of 2 to 8 carbon atoms, dialkyl ketones having a total of 3 to 6 carbon atoms and aliphatic sulfones having a total of 3 to 6 carbon atoms, where the solvent or the solvent mixture may additionally comprise up to 30% by weight of a hydrocarbon. I is used as light protection agent in cosmetic preparations.

    摘要翻译: 在存在下由互变异构体混合物结晶制备2,4,6-三苯胺基 - 对 - (碳 - 2'-乙基己基-1'-氧)-1,3,5-三嗪的互变异构形式I的方法 选自碳原子数2〜8的脂肪族醇,碳原子数为3〜10的脂肪族羧酸烷基酯,碳原子数为8〜12的芳香族羧酸烷基酯,脂肪族碳酸酯 具有总共3至9个碳原子的酯,总共具有2至8个碳原子的碳原子,总共3至6个碳原子的二烷基酮和总共具有3至6个碳原子的脂族砜,其中溶剂或 溶剂混合物可以另外包含至多30重量%的烃。 我用作化妆品制剂中的防晒剂。

    Process for preparing nitric acid with a concentration in the range from 50 to 77.8% by weight
    9.
    发明授权
    Process for preparing nitric acid with a concentration in the range from 50 to 77.8% by weight 有权
    制备浓度为50-77.8重量%浓度的硝酸的方法

    公开(公告)号:US08765009B2

    公开(公告)日:2014-07-01

    申请号:US12601534

    申请日:2008-07-08

    IPC分类号: C09K3/00

    CPC分类号: C01B21/40 C01B21/262

    摘要: A process for preparing nitric acid by: catalytically oxidizing ammonia, to obtain a gas mixture containing NO and O2; cooling and condensing the gas mixture, thereby further oxidizing NO with O2, to obtain a gas stream containing NO2/N2O4 and an aqueous solution containing nitric acid; and countercurrently absorbing the NO2/N2O4 from the gas stream in an absorber with process water (H2O), to obtain nitric acid and an NOx-containing absorber offgas, wherein the water content of the nitric acid is regulated to a concentration in the range from 50 to 77.8% by weight and the NOx content of the absorber offgas to a concentration in the range from 20 to 500 ppm, by continuously measuring the water content of the process air supplied to the catalytic gas phase oxidation and, as a function of this, adjusting the amount of process water (Q-H2O) fed to the absorber.

    摘要翻译: 一种通过以下方式制备硝酸的方法:催化氧化氨,得到含NO和O2的气体混合物; 冷却并冷凝气体混合物,从而进一步用O 2氧化NO,得到含有NO 2 / N 2 O 4的气流和含有硝酸的水溶液; 并用工艺用水(H 2 O)从吸收器中的气流中逆流吸收NO 2 / N 2 O 4,得到硝酸和含NO x的吸收剂废气,其中将硝酸的含水量调节至 50至77.8重量%,并且通过连续测量供应到催化气相氧化的工艺空气的水含量,吸收器的NOx含量废气至浓度在20至500ppm的范围内,并且作为其功能 ,调节供给到吸收器的工艺用水(Q-H 2 O)的量。

    Method for producing acid chlorides
    10.
    发明授权
    Method for producing acid chlorides 有权
    生产酰氯的方法

    公开(公告)号:US06770783B1

    公开(公告)日:2004-08-03

    申请号:US10070864

    申请日:2002-03-12

    IPC分类号: C07C5158

    CPC分类号: C07C51/64 C07C51/60

    摘要: The invention relates to a method for producing acid chlorides by converting carboxylic acids with carbon oxychlorides or thionyl chloride in the presence of a catalyst adduct of an N,N-disubstituted formamide of general formula (I) and carbon oxychloride or thionyl chloride. In the formula, R1 and R2, independently from one another, mean C1- to C4-alkyl or R1 and R2 together mean a C4- or C5-alkylene chain. According to the inventive method, hydrogen chloride is added during and/or after the conversion.

    摘要翻译: 本发明涉及在通式(I)的N,N-二取代甲酰胺与碳酰氯或亚硫酰氯的催化剂加合物存在下,用碳氧氯化物或亚硫酰氯转化羧酸制备酰氯的方法。 在该式中,R 1和R 2彼此独立地表示C 1至C 4 - 烷基或R 1和R 2一起表示C 4 - 或C 5-亚烷基链。 根据本发明的方法,在转化期间和/或之后加入氯化氢。