Method for producing cyclopentanone
    32.
    发明授权
    Method for producing cyclopentanone 失效
    环戊酮生产方法

    公开(公告)号:US06429339B1

    公开(公告)日:2002-08-06

    申请号:US09700365

    申请日:2000-11-15

    IPC分类号: C07C4500

    摘要: A process for preparing cyclopentanone by reacting adipic esters of the formula R1OOC—(CH2)4—COOR2  I where R1 and R2 are each alkyl having from 1 to 12 carbon atoms, cycloalkyl having 5 or 6 carbon atoms, aralkyl or aryl and R2 may additionally be hydrogen, in the presence of oxidic catalysts comprises reacting adipic esters of the formula I having less than 5% by weight of by-products other than adipic esters in the gas phase in the presence of water, a carrier gas and a) from 0.01 to 10% by weight of at least one metal oxide selected from the first or second main group of the periodic table or from the group of the rare earth metals on titanium dioxide or zirconium dioxide as catalyst support, or b) from 0.01 to 50% by weight of at least one metal oxide selected from the second main group of the periodic table on zink oxide as catalyst support.

    摘要翻译: 通过使式R 1和R 2的己二酸酯反应制备环戊酮的方法各自是在氧化催化剂存在的情况下,可以另外为氢,其中R 1和R 2各自为具有1至12个碳原子的烷基,具有5或6个碳原子的环烷基或芳基, 包括使式I的己二酸酯在水,载气的存在下,在气相中具有小于5重量%的除己二酸酯之外的副产物,和(ii)0.01至10重量%的至少一种金属 氧化物,其选自周期表的第一或第二主族,或者来自稀土金属的二氧化钛或二氧化锆的组,作为催化剂载体,orb)为0.01至50重量%的至少一种选自 氧化锌作为催化剂载体的周期表第二主要组。

    Process for the manufacture of aliphatic alpha, omega amino nitriles
    35.
    发明授权
    Process for the manufacture of aliphatic alpha, omega amino nitriles 有权
    用于制造脂肪族α,ω-氨基腈的方法

    公开(公告)号:US06222059B1

    公开(公告)日:2001-04-24

    申请号:US09254570

    申请日:1999-03-10

    IPC分类号: C07C25504

    摘要: A process for preparing aliphatic alpha,omega-amino nitrites by partial hydrogenation of aliphatic alpha,omega-dinitriles in the presence of a catalyst, wherein the catalyst used for the partial hydrogenation comprises (a) iron or a compound based on iron or mixtures thereof and (b) from 0.01 to 5% by weight, based on (a), of a promoter based on 2,3,4 or 5 elements selected from the group consisting of aluminum, silicon, zirconium, titanium and vanadium and (c) from 0 to 5% by weight, based on (a), of a compound based on an alkali metal or alkaline earth metal.

    摘要翻译: 在催化剂存在下通过部分氢化脂族α,ω-二腈制备脂族α,ω-氨基亚硝酸盐的方法,其中用于部分氢化的催化剂包括(a)铁或基于铁或其混合物的化合物 和(b)基于(a)0.01至5重量%的基于2,3,4或5个选自铝,硅,锆,钛和钒的元素的促进剂,和(c) 基于(a)的0至5重量%的基于碱金属或碱土金属的化合物。

    Process for preparing polytetrahydrofuran and derivatives thereof
    36.
    发明授权
    Process for preparing polytetrahydrofuran and derivatives thereof 失效
    制备聚四氢呋喃及其衍生物的方法

    公开(公告)号:US6111147A

    公开(公告)日:2000-08-29

    申请号:US269210

    申请日:1999-04-01

    CPC分类号: C08G65/20 C08G18/4854

    摘要: Polytetrahydrofuran, copolymers of tetrahydrofuran and 2-butyne-1,4-diol, diesters of these polymers with C.sub.2 -C.sub.20 -monocarboxylic acids or monoesters of these polymers with C.sub.1 -C.sub.10 -monocarboxylic acids are prepared by polymerization of tetrahydrofuran in the presence of one of the telogens water, 1,4-butanediol, 2-butyne-1,4-diol, polytetrahydrofuran having a molecular weight of from 200 to 700 Dalton, a C.sub.1 -C.sub.10 -monocarboxylic acid or an anhydride of a C.sub.2 -C.sub.20 -monocarboxylic acid or a mixture of these telogens over a heterogeneous supported catalyst which comprises a catalytically active amount of an oxygen-containing molybdenum and/or tungsten compound on an oxidic support material and which has been calcined at from 5OO.degree. C. to 1OOO.degree. C. after application of the precursor compounds of the oxygen-containing molybdenum and/or tungsten compounds onto the support material precursor, wherein the catalyst is activated by treatment with a reducing agent before it is used as a polymerization catalyst.

    摘要翻译: PCT No.PCT / EP97 / 05204 Sec。 371日期1999年4月1日 102(e)1999年4月1日PCT PCT 1997年9月23日PCT公布。 第WO98 / 15589号公报 日期:1998年4月16日四氢呋喃,四氢呋喃和2-丁炔-1,4-二醇的共聚物,这些聚合物与C2-C20-一元羧酸的二酯或这些聚合物与C1-C10-一元羧酸的单酯通过四氢呋喃 在其中一种使用水,1,4-丁二醇,2-丁炔-1,4-二醇,分子量为200-700道尔顿的聚四氢呋喃,C1-C10-一元羧酸或 C2-C20-一元羧酸或这些方法的混合物在非均相载体催化剂上的混合物,其包含在氧化载体材料上的催化活性量的含氧钼和/或钨化合物,并且已经在500℃煅烧 将含氧钼和/或钨化合物的前体化合物施加到载体材料前体上之后,至1000℃,其中催化剂在用作还原剂之前通过用还原剂进行活化 聚合催化剂。

    Preparation of caprolactam from 6-aminocapronitrile
    40.
    发明授权
    Preparation of caprolactam from 6-aminocapronitrile 失效
    从6-氨基己腈制备己内酰胺

    公开(公告)号:US5693793A

    公开(公告)日:1997-12-02

    申请号:US707476

    申请日:1996-09-05

    CPC分类号: C07D201/12 C07D201/08

    摘要: A process for preparing caprolactam by cyclization of 6-aminocapronitrile in the presence of water at elevated temperature and in the presence or absence of a catalyst and a solvent, comprises a) removing from the cyclization reaction effluent ("reaction effluent I") caprolactam and all components boiling higher than caprolactam ("high boilers"), b) treating the high boilers of stage a) with phosphoric acid and/or polyphosphoric acid at from 200 to 350.degree. C. to obtain a reaction effluent II, and c) removing caprolactam formed and any 6-aminocapronitrile from reaction effluent II of stage b) to obtain separation from unconverted high boilers and acid used.

    摘要翻译: 在高温存在下和在存在或不存在催化剂和溶剂的情况下,通过6-氨基己腈的环化制备己内酰胺的方法包括:a)从环化反应流出物(“反应流出物I”)中除去己内酰胺和 所有组分沸点高于己内酰胺(“高锅炉”),b)用磷酸和/或多磷酸在200至350℃下处理阶段a)的高锅炉以获得反应流出物II,和c)除去 己内酰胺和来自阶段b)的反应流出物II的任何6-氨基己腈得到与未转化的高锅炉和酸的分离。