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142 条记录 (耗时 0.032 秒)

    Method for producing 3-pentenenitrile
    51.
    发明授权
    Method for producing 3-pentenenitrile 有权
    3-戊烯腈的制备方法

    公开(公告)号：US07541486B2

    公开(公告)日：2009-06-02

    申请号：US10586007

    申请日：2005-01-27

    申请人： Jens Scheidel ,  Tim Jungkamp ,  Michael Bartsch ,  Gerd Haderlein ,  Robert Baumann ,  Hermann Luyken

    发明人： Jens Scheidel ,  Tim Jungkamp ,  Michael Bartsch ,  Gerd Haderlein ,  Robert Baumann ,  Hermann Luyken

    IPC分类号： C07C255/00 ,  C07C253/00

    CPC分类号： C07C253/10 ,  C07C253/34 ,  C07C255/07

    摘要： A process is described for preparing 3-pentenenitrile, characterized by the following process steps: (a) reacting 1,3-butadiene with hydrogen cyanide over at least one catalyst to obtain a stream 1 which comprises 3-pentenenitrile, 2-methyl-3-butenenitrile, the at least one catalyst and 1,3-butadiene, (b) distilling stream 1 in a column to obtain a high-1,3-butadiene stream 2 as the top product and a low-1,3-butadiene stream 3 as the bottom product which comprises 3-pentenenitrile, the at least one catalyst and 2-methyl-3-butenenitrile, (c) distilling stream 3 in a column to obtain a stream 4 as the top product which comprises 1,3-butadiene, a stream 5 which comprises 3-pentenenitrile and 2-methyl-3-butenenitrile at a side draw of the column, and a stream 6 as the bottom product which comprises the at least one catalyst, (d) distilling stream 5 to obtain a stream 7 as the top product which comprises 2-methyl-3-butenenitrile, and a stream 8 as the bottom product which comprises 3-pentenenitrile.

    摘要翻译： 描述了一种制备3-戊烯腈的方法，其特征在于以下工艺步骤：（a）使1,3-丁二烯与氰化氢在至少一种催化剂上反应，得到流1，其包含3-戊烯腈，2-甲基-3 丁烯腈，至少一种催化剂和1,3-丁二烯，（b）在塔中蒸馏物流1，得到作为顶部产物的高-1,3-丁二烯流2和低-1,3-丁二烯流 3作为底部产物，其包含3-戊烯腈，至少一种催化剂和2-甲基-3-丁烯腈，（c）在塔中蒸馏流3以获得作为顶部产物的料流4，其包含1,3-丁二烯 ，在塔的侧馏分中包含3-戊烯腈和2-甲基-3-丁烯腈的料流5和作为底部产物的料流6，其包含至少一种催化剂，（d）蒸馏流5以获得 流7作为顶部产物，其包含2-甲基-3-丁烯腈，以及作为底部产物的料流8，其包含3-戊烯 腈

    Phosphites
    56.
    发明授权
    Phosphites 有权

    公开(公告)号：US06770770B1

    公开(公告)日：2004-08-03

    申请号：US10111477

    申请日：2002-04-25

    申请人： Robert Baumann ,  Jakob Fischer ,  Tim Jungkamp ,  Dagmar Pascale Kunsmann-Keitel ,  Wolfgang Siegel

    发明人： Robert Baumann ,  Jakob Fischer ,  Tim Jungkamp ,  Dagmar Pascale Kunsmann-Keitel ,  Wolfgang Siegel

    IPC分类号： C07F9145

    CPC分类号： C07C253/30 ,  B01J31/185 ,  B01J2231/323 ,  B01J2231/52 ,  B01J2531/847 ,  C07C253/10 ,  C07F9/145 ,  C07C255/04 ,  C07C255/07 ,  C07C255/19

    摘要： Novel phosphites have the formula I P(O—R1)x(O—R2)y(O—R3)z(O—R4)p  I where R1: aromatic radical having a C1-C18-alkyl substituent in the o position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, or having an aromatic substituent in the o position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, or having an aromatic system fused on in the o position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, R2: aromatic radical having a C1-C18-alkyl substituent in the m position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, or having an aromatic substituent in the m position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, or having an aromatic system fused on in the m position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, where the aromatic radical bears a hydrogen atom in the o position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, R3: aromatic radical having a C1-C18-alkyl substituent in the p position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, or having an aromatic substituent in the p position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, where the aromatic radical bears a hydrogen atom in the o position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, R4: aromatic radical which bears substituents other than those defined for R1, R2 and R3 in the o, m and p positions relative to the oxygen atom which connects the phosphorus atom to the aromatic system, where the aromatic radical bears a hydrogen atom in the o position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, x: 1 or 2, y, z, p: independently of one another, 0, 1 or 2, with the proviso that x+y+z+p=3.