METHOD FOR PRODUCING LINEAR PENTENENITRILE
    6.
    发明申请
    METHOD FOR PRODUCING LINEAR PENTENENITRILE 有权
    生产线性胆固醇的方法

    公开(公告)号:US20120178958A1

    公开(公告)日:2012-07-12

    申请号:US13361783

    申请日:2012-01-30

    IPC分类号: C07C253/30

    摘要: A method for producing 3-pentenenitrile is provided that includes: (a) isomerizing an educt stream containing 2-methyl-3-butenenitrile on at least one dissolved or dispersed isomerisation catalyst to form a stream (1), which contains the isomerisation catalyst(s), 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile; (b) distilling the stream (1) to obtain a stream (2) as the overhead product, which contains 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile and a stream (3) as the bottom product, which contains the isomerisation catalyst(s); (c) distilling the stream (2) to obtain a stream (4) as the overhead product, which is enriched with (Z)-2-methyl-2-butenenitrile in comparison to stream (2), and a stream (5) as the bottom product, which is enriched with 3-pentenenitrile and 2-methyl-3-butenenitrile in comparison to stream (2); (d) distilling stream (5) to obtain a stream (6) as the bottom product, which contains 3-pentenenitrile and a stream (7) as the head product containing 2-methyl-3-butenenitrile.

    摘要翻译: 提供了一种制备3-戊烯腈的方法,其包括:(a)在至少一种溶解或分散的异构化催化剂上异构化含有2-甲基-3-丁烯腈的流出物流以形成含有异构化催化剂( s),2-甲基-3-丁烯腈,3-戊烯腈和(Z)-2-甲基-2-丁烯腈; (b)蒸馏物流(1)以获得作为塔顶产物的物流(2),其含有2-甲基-3-丁烯腈,3-戊烯腈和(Z)-2-甲基-2-丁烯腈和流( 3)作为含有异构化催化剂的底部产物; (c)与料流(2)相比,蒸馏物流(2)以获得作为塔顶产物的物流(4),其与(2)相比富含(Z)-2-甲基-2-丁烯腈, 作为与料流(2)相比富含3-戊烯腈和2-甲基-3-丁烯腈的底部产物; (d)蒸馏物流(5),得到作为底物的物流(6),其含有3-戊烯腈和作为含有2-甲基-3-丁烯腈的头部产物的物流(7)。

    Obtaining an aliphatic dialdehyde Monoacetal
    9.
    发明授权
    Obtaining an aliphatic dialdehyde Monoacetal 失效
    获得脂族二醛单缩醛

    公开(公告)号:US07498451B2

    公开(公告)日:2009-03-03

    申请号:US10536900

    申请日:2003-11-27

    IPC分类号: C07D317/26 C07C45/64

    摘要: The invention relates to a process for obtaining a pure aliphatic dialdehyde monoacetal by reaction of the corresponding aliphatic dialdehyde or a precursor of the corresponding aliphatic dialdehyde with one or more aliphatic mono- or polyhydric alcohols while distillatively removing water to obtain a reaction mixture which is separated distillatively, which comprises carrying out the distillative separation continuously in a dividing wall column to obtain pure aliphatic dialdehyde monoacetal as a sidestream from the dividing wall column, or in two distillation columns to obtain crude aliphatic dialdehyde monoacetal as a sidestream in the first distillation column, feed the crude aliphatic dialdehyde monoacetal to the second distillation column and obtain pure aliphatic dialdehyde monoacetal as the sidestream from the second distillation column.

    摘要翻译: 本发明涉及通过相应的脂族二醛或相应的脂族二醛的前体与一种或多种脂肪族一元醇或多元醇反应而获得纯的脂族二醛单缩醛的方法,同时蒸馏除去水,得到分离的反应混合物 蒸馏,其包括在分隔壁塔中连续进行蒸馏分离以获得作为来自分隔壁塔的侧流的纯脂族二醛单缩醛,或在两个蒸馏塔中,以在第一蒸馏塔中获得作为侧流的粗脂族二醛单缩醛, 将粗脂族二醛单缩醛进料至第二蒸馏塔,得到作为来自第二蒸馏塔的侧流的纯脂族二醛单缩醛。

    NI(0) -CONTAINING CATALYST SYSTEM
    10.
    发明申请
    NI(0) -CONTAINING CATALYST SYSTEM 有权
    NI(0)-CONTAINING催化剂体系

    公开(公告)号:US20080071105A1

    公开(公告)日:2008-03-20

    申请号:US11860972

    申请日:2007-09-25

    IPC分类号: C07C253/00

    摘要: A system comprising a) Ni(0) b) from 4 to 10 mol per mol of Ni(0) in a) of a compound (I) of the formula P(X1R1)(X2R2)(X3R3)   (I) where X1, X2, X3 are each, independently of one another, oxygen or a single bond, R1, R2, R3 are, independently of one another, identical or different organic radicals and c) from 1 to 4 mol per mol of Ni(0) in a) of a compound (II) of the formula where X11, X12, X13 X21, X22, X23 are each, independently of one another, oxygen or a single bond, R11, R12 are identical or different, individual or bridged organic radicals, R21, R22 are identical or different, individual or bridged organic radicals and Y is a bridging group is suitable as catalyst for preparing mixtures of monoolefinic C5 mononitriles having nonconjugated C═C and C═N bonds by hydrocyanation of a 1,3-butadiene-containing hydrocarbon mixture and for preparing a dinitrile by hydrocyanation of a mixture of monoolefinic C5 mononitriles having nonconjugated C═C and C═N bonds.

    摘要翻译: 一种系统,其包含a)式(I)中的式(ⅰ)中的每一摩尔Ni(0)中的Ni(0)b)4至10摩尔的式(ⅰ)的线性式描述=“在线式” 结束=“铅”→P(X 1> 1 )(X 2 2 R 2)(X (I)<?in-line-formula description =“In-line Formulas”end =“tail”?>其中X <1> 2,R 3彼此独立地为相同或不同的有机基团,c)1至4摩尔每摩尔a)化合物中的Ni(0) II),其中X 11,X 12,X 13,X 21,X 22 X 23,X 23各自彼此独立地为氧或单键,R 11,R 12和R 12相同或相同, 不同的单个或桥连的有机基团,R 21,R 22和R 22相同或不同,单个或桥接的有机基团和 Y是桥联基团,适合作为通过含1,3-丁二烯的烃混合物的氢氰化制备具有非共轭CC和CN键的单烯键式C 5 H 5单体的混合物的催化剂,并通过氢氰化制备二腈 的具有非共轭CC和CN键的单烯烃C 5 H 5单体的混合物。