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29 条记录 (耗时 0.034 秒)

    Recovery of caprolactam from oligomers and/or polymers of caprolactam
    13.
    发明授权
    Recovery of caprolactam from oligomers and/or polymers of caprolactam 失效
    从己内酰胺的低聚物和/或聚合物回收己内酰胺

    公开(公告)号：US5360905A

    公开(公告)日：1994-11-01

    申请号：US60972

    申请日：1993-05-14

    申请人： Hugo Fuchs ,  Claus-Ulrich Priester ,  Gerald Neubauer ,  Erwin Brunner ,  Josef Ritz ,  Michael Kopietz

    发明人： Hugo Fuchs ,  Claus-Ulrich Priester ,  Gerald Neubauer ,  Erwin Brunner ,  Josef Ritz ,  Michael Kopietz

    IPC分类号： C08J11/00 ,  C07D201/12 ,  C08J11/14

    CPC分类号： C07D201/12

    摘要： A process for recovering caprolactam from oligomers and/or polymers of caprolactam comprises the following steps:a) treating oligomers and/or polymers of caprolactam with from 1 to 20 parts by weight of water per part by weight of oligomer or polymer at from 200.degree. to 350.degree. C. under superatmospheric pressure with a residence time of from 0.5 to 10 hours to form an aqueous reaction mixture comprising polycaprolactam, monomeric caprolactam and oligomers thereof, andb) passing the aqueous reaction mixture obtained in a) into a fluidized bed of alumina at from 250.degree. to 400.degree. C. to obtain a mixture of steam and caprolactam.

    摘要翻译： 从己内酰胺的低聚物和/或聚合物中回收己内酰胺的方法包括以下步骤：a）在200℃下用每重量份低聚物或聚合物1至20重量份水处理己内酰胺的低聚物和/或聚合物 在超大气压下加热至350℃，停留时间为0.5至10小时，以形成包含聚己内酰胺，单体己内酰胺及其低聚物的含水反应混合物，和b）将a）中得到的含水反应混合物送入流化床 氧化铝在250-400℃下反应，得到蒸汽与己内酰胺的混合物。

    Storability of molten cyclohexanone oxime
    15.
    发明授权
    Storability of molten cyclohexanone oxime 失效
    熔融环己酮肟的储存性

    公开(公告)号：US4931592A

    公开(公告)日：1990-06-05

    申请号：US429799

    申请日：1989-10-31

    申请人： Hugo Fuchs ,  David Agab ,  Gerald Neubauer ,  Josef Ritz

    发明人： Hugo Fuchs ,  David Agab ,  Gerald Neubauer ,  Josef Ritz

    IPC分类号： C07C249/14 ,  C07C251/44

    CPC分类号： C07C249/14

    摘要： The storability of molten cyclohexanone oxime containing 0.5-15% by weight of cyclohexanone and 1-8% by weight of aqueous ammonium bisulfate solution is improved by washing the molten cyclohexanone oxime with a 10-42% strength by weight aqueous ammonium sulfate solution and maintaining a pH of 4.5-5.8.

    摘要翻译： 通过用10-42％重量的硫酸铵水溶液洗涤熔融的环己酮肟，维持熔融环己酮肟的含量为0.5-15％（重量）的环己酮和1-8％（重量）的硫酸氢铵水溶液， pH值为4.5-5.8。

    Working up cyclohexyl hydroperoxide containing reaction mixtures
    16.
    发明授权
    Working up cyclohexyl hydroperoxide containing reaction mixtures 失效
    加工含环己基氢过氧化物的反应混合物

    公开(公告)号：US4814511A

    公开(公告)日：1989-03-21

    申请号：US111605

    申请日：1987-10-23

    申请人： Gerald Neubauer ,  Rolf Schnabel ,  Juergen Hartig ,  Josef Ritz

    发明人： Gerald Neubauer ,  Rolf Schnabel ,  Juergen Hartig ,  Josef Ritz

    IPC分类号： C07C27/00 ,  B01J21/06 ,  B01J23/16 ,  B01J23/44 ,  C07B61/00 ,  C07C29/132 ,  C07C29/88 ,  C07C35/08 ,  C07C45/00 ,  C07C45/33 ,  C07C45/53 ,  C07C49/403 ,  C07C67/00

    CPC分类号： C07C45/33 ,  C07C29/132 ,  C07C29/88 ,  C07C45/53 ,  C07C2101/14

    摘要： Cyclohexyl hydroperoxide containing reaction mixtures obtained by oxidation of cyclohexane with molecular oxygen or molecular oxygen containing gases in the liquid phase at from 130.degree. to 200.degree. C. and under from 5 to 125 bar are worked up by reaction with cycloolefins at elevated temperature in the presence of catalysts to react cyclohexyl hydroperoxide with cyclohexene at elevated temperatures in the presence of cyclohexene-soluble compounds of transition metals of groups 4 or 5 or 6 of the periodic table or of one or more cyclohexane-insoluble compounds of a transition metal of group 4 or 5 or 6, or in the presence of selenium, tellurium or a boride, and the resulting cyclohexene oxide at elevated temperatures to cyclohexanol in the presence of hydrogenation catalysts.

    摘要翻译： 通过在130〜200℃，5〜125巴下的液相中用分子氧或分子氧气体氧化环己烷得到的含环己基氢过氧化物的反应混合物通过与环烯烃在高温下 存在催化剂以使环己基氢过氧化物与环己烯在升高的温度下在周期表第4或5或6族的过渡金属的环己烯可溶性化合物的存在下或一种或多种环己烷不溶性的第4族过渡金属的化合物 或5或6，或在硒，碲或硼化物的存在下，将得到的环己烯氧化物在升高的温度下在氢化催化剂存在下进行。

    Process for obtaining coarsely crystalline pure ammonium sulfate
    20.
    发明授权
    Process for obtaining coarsely crystalline pure ammonium sulfate 失效
    获得粗结晶纯硫酸铵的方法

    公开(公告)号：US4138472A

    公开(公告)日：1979-02-06

    申请号：US844647

    申请日：1977-10-25

    申请人： Gerald Neubauer ,  Gerard Van Wauwe ,  Josef Beullens ,  Uwe Brand ,  Hugo Fuchs ,  Klaus Kartte

    发明人： Gerald Neubauer ,  Gerard Van Wauwe ,  Josef Beullens ,  Uwe Brand ,  Hugo Fuchs ,  Klaus Kartte

    IPC分类号： C01C1/242 ,  C01C1/248

    CPC分类号： C01C1/242 ,  C01C1/248

    摘要： A process for obtaining coarsely crystalline pure ammonium sulfate from reaction mixtures which have been obtained by Beckmann rearrangement of cyclohexanone-oxime with sulfuric acid or oleum, by neutralizing the mixtures with ammonia at an elevated temperature, with the addition of recycled ammonium sulfate mother liquor, the concentration being so chosen that during the neutralization no solid ammonium sulfate precipitates, separating the crude caprolactam from the ammonium sulfate solution, crystallizing ammonium sulfate by evaporating the ammonium sulfate solution under reduced pressure, separating off the crystallized ammonium sulfate and recycling the mother liquor to the neutralization stage. The neutralization is carried out at from 80.degree. to 115.degree. C. under autogenous pressure and the ammonium sulfate solution obtained after separating off the crude lactam is evaporated under a pressure of from 200 to 600 mm Hg while cooling to from 72.degree. to 101.degree. C.

    摘要翻译： 从反应混合物中获得粗结晶纯硫酸铵的方法，其通过用硫酸或发烟硫酸重整环己酮 - 肟，通过在升高的温度下用氨中和混合物，再加入回收的硫酸铵母液， 浓度如此选择，使得在中和期间没有固体硫酸铵沉淀，将粗己内酰胺与硫酸铵溶液分离，通过在减压下蒸发硫酸铵溶液使硫酸铵结晶，分离结晶的硫酸铵并将母液再循环至 中和阶段。 中和在自生压力下在80〜115℃进行，分离出内酰胺后得到的硫酸铵溶液在200〜600mmHg的压力下蒸发，同时冷却至72〜101℃。 C。