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28 条记录 (耗时 0.031 秒)

    Preparation of 2,5-dimethyl-4-hydroxy-2,3-dihydrofuran-3-one
    21.
    发明授权
    Preparation of 2,5-dimethyl-4-hydroxy-2,3-dihydrofuran-3-one 失效
    2,5-二甲基-4-羟基-2,3-二氢呋喃-3-酮的制备

    公开(公告)号：US4290960A

    公开(公告)日：1981-09-22

    申请号：US127467

    申请日：1980-03-05

    申请人： Karl-Heinz Ross ,  Christian Dudeck ,  Walter Himmele ,  Rolf Lebkuecher ,  Wolfgang Sauer

    发明人： Karl-Heinz Ross ,  Christian Dudeck ,  Walter Himmele ,  Rolf Lebkuecher ,  Wolfgang Sauer

    IPC分类号： C07D303/14 ,  C07D307/20 ,  C07D307/32 ,  C07D307/60

    CPC分类号： C07D307/32 ,  C07D303/14 ,  C07D307/20 ,  C07D307/60

    摘要： A process for the preparation of the sought-after scent 2,5-dimethyl-4-hydroxy-2,3-dihydrofuran-3-one, and novel intermediates for the preparation of this compound.2,5-Dimethyl-4-hydroxy-2,3-dihydrofuran-3-one is prepared by first epoxidizing hex-3-ene-2,5-diol in the liquid phase with hydrogen peroxide to give the novel compound 3,4-epoxy-hexane-2,5-diol, which at 40.degree.-280.degree. C. is converted, by means of a catalytic amount of an acid, to the novel compound 2,5-dimethyl-3,4-dihydroxy-tetrahydro-furan. The latter is dehydrogenated by means of oxygen over a silver catalyst or copper catalyst to give the nove compound 2,5-dimethyl-4-hydroxy-tetrahydrofuran-3-one, which is oxidized by means of bismuth oxide, in concentrated acetic acid solution, to give the desired compound 2,5-dimethyl-4-hydroxy-2,3-dihydrofuran-3-one.

    摘要翻译： 制备所需香味2,5-二甲基-4-羟基-2,3-二氢呋喃-3-酮的方法，以及制备该化合物的新型中间体。 通过用过氧化氢在液相中首先环己化己-3-烯-2,5-二醇制备2,5-二甲基-4-羟基-2,3-二氢呋喃-3-酮，得到新化合物3,4 - 环氧己烷-2,5-二醇，其在40℃-280℃下通过催化量的酸转化为新化合物2,5-二甲基-3,4-二羟基 - 四氢 呋喃 后者通过氧气在银催化剂或铜催化剂上脱氢，得到通过氧化铋在浓缩乙酸溶液中氧化的化合物2,5-二甲基-4-羟基 - 四氢呋喃-3-酮 ，得到所需化合物2,5-二甲基-4-羟基-2,3-二氢呋喃-3-酮。

    Process for the Synthesis of Dmapa
    24.
    发明申请
    Process for the Synthesis of Dmapa 有权
    合成Dmapa的过程

    公开(公告)号：US20080293973A1

    公开(公告)日：2008-11-27

    申请号：US12092684

    申请日：2006-10-31

    申请人： Martin Ernst ,  Steffen Oehlenschlager ,  Frank Kuhnke ,  Karl-Heinz Ross ,  Roland Deeg ,  Johann-Peter Melder

    发明人： Martin Ernst ,  Steffen Oehlenschlager ,  Frank Kuhnke ,  Karl-Heinz Ross ,  Roland Deeg ,  Johann-Peter Melder

    IPC分类号： C07C209/48 ,  B01J19/00

    CPC分类号： B01J8/20 ,  B01D3/14 ,  B01J2219/00006 ,  B01J2219/00029 ,  B01J2219/0004 ,  C07C209/48 ,  C07C211/11

    摘要： The present invention relates to a process for the industrial preparation of a diamine starting from a corresponding alkenyl nitrile comprising at least one C-C double bond, which comprises the steps (a) reaction of the alkenyl nitrile with a corresponding monoamine in a first reactor so that the monoamine adds exothermically onto the at least one double bond to form an aminoalkyl nitrile, with the monoamine and water being charged initially and the alkenyl nitrile being fed in; (b) evaporation of unreacted alkenyl nitrile and monoamine to increase the concentration of the aminoalkyl nitrile product in the bottoms of the first reactor; (c) transfer of the aminoalkyl nitrile bottom product from step (b) to a second reactor; (d) batchwise catalytic hydrogenation of the aminoalkyl nitrile transferred in step (c) to the diamine in the second reactor, with each batch being obtained by initially charging a catalyst suitable for the hydrogenation of nitriles to amines and also water, the desired diamine and a base, introducing hydrogen into the second reactor and feeding in the aminoalkyl nitrile transferred in step (c); and (e) isolation of the diamine and, if appropriate, repetition of the steps (a) to (e). The invention further relates to an apparatus for preparing these diamines and the use of the apparatuses. A preferred diamine is 3-dimethylaminopropylamine (DMAPA).

    摘要翻译： 本发明涉及从包含至少一个CC双键的相应烯基腈开始工业制备二胺的方法，其包括步骤（a）在第一反应器中使链烯基腈与相应的单胺反应，使得 单胺在至少一个双键上放热添加以形成氨基烷基腈，最初加入单胺和水，并加入链烯基腈; （b）蒸发未反应的烯基腈和单胺以增加第一反应器底部氨基烷基腈产物的浓度; （c）将氨基烷基腈底部产物从步骤（b）转移至第二反应器; （d）将步骤（c）中转移的氨基烷基腈分批催化氢化为第二反应器中的二胺，每个批次通过首先将适合于将腈氢化成的催化剂加入到胺中而得到，并且还需要水，所需的二胺和 碱，将氢气引入第二反应器并进料步骤（c）中转移的氨基烷基腈; 和（e）分离二胺，如果合适，重复步骤（a）至（e）。 本发明还涉及一种用于制备这些二胺的装置和该装置的用途。 优选的二胺是3-二甲基氨基丙胺（DMAPA）。

    Brake disk and method of making same
    26.
    发明授权
    Brake disk and method of making same 失效
    制动盘及其制作方法

    公开(公告)号：US5765667A

    公开(公告)日：1998-06-16

    申请号：US601674

    申请日：1996-02-15

    申请人： Karl-Heinz Ross ,  Reinhard Weller

    发明人： Karl-Heinz Ross ,  Reinhard Weller

    IPC分类号： F16D65/12 ,  F16D69/00 ,  B60T7/12

    CPC分类号： F16D65/127 ,  F16D65/12 ,  F16D65/125 ,  F16D2065/1308 ,  F16D2065/1392 ,  F16D2069/004 ,  F16D2250/0007 ,  Y10T29/49998

    摘要： The invention relates to a hat-shaped brake disc made from a castable metal for vehicle wheels. It has, within the friction ring, a nave with a nave casing and nave bottom, the latter having screw-passage holes for screwing the brake disc to the wheel hub. The friction ring contains indentations rounded out on both sides in the region of transition to the nave casing. The brake disc consists completely, up to and including that immediate surface of the friction ring which is subjected to frictional stress during braking, of a particle reinforced composite aluminum material with intercalated hard-material particles of ceramic, particularly of aluminum oxide or silicon carbide (so-called Al-MMC=Aluminum-Metal-Matrix-Composite) and/or of a hypereutectic Al/Si alloy with intercalated silicon crystals. It is designed and produced as a die casting, all the surface parts of the casting being cast with a very small shape and dimension deviation. Only the frictionally-stressed surfaces of the friction ring and, where appropriate, a frictionally-stressed hollow-cylindrical brake surface inside the nave need to be machined by cutting. A radially projecting flange is arranged on the outside of the nave at the transition from the nave bottom to the nave casing, via which flange the brake disc can be secured axially in or on a workpiece holder during machining.

    摘要翻译： 本发明涉及一种由用于车轮的可浇铸金属制成的帽形制动盘。 它在摩擦环内具有一个带有中殿和底座的中殿，后者具有用于将制动盘旋入轮毂的螺丝通道孔。 摩擦环包含在过渡到中间罩壳体的区域中的两侧的凹陷。 制动盘完全包括具有插入硬质材料颗粒的陶瓷，特别是氧化铝或碳化硅的颗粒增强复合铝材料，直到并包括在制动期间受到摩擦应力的摩擦环的即时表面（ 所谓的Al-MMC =铝 - 金属 - 基质 - 复合材料）和/或具有插层硅晶体的过共晶Al / Si合金。 它被设计和生产为压铸件，铸件的所有表面部分都以非常小的形状和尺寸偏差铸造。 摩擦环的摩擦应力表面，以及适当的地方，内侧的摩擦应力的中空圆柱形制动器表面需要通过切割加工。 径向突出的凸缘布置在中殿侧的外侧，从中间的底部过渡到内侧的外壳，通过该凸缘可以在加工过程中将制动盘轴向固定在工件支架内或上。

    Preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine
    27.
    发明授权
    Preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine 失效
    3-氨基甲基-3,5,5-三甲基环己胺的制备

    公开(公告)号：US5756845A

    公开(公告)日：1998-05-26

    申请号：US608485

    申请日：1996-02-28

    申请人： Guido Voit ,  Tom Witzel ,  Boris Breitscheidel ,  Wolfgang Harder ,  Hermann Luyken ,  Axel Paul ,  Karl-Heinz Ross ,  Peter Wahl

    发明人： Guido Voit ,  Tom Witzel ,  Boris Breitscheidel ,  Wolfgang Harder ,  Hermann Luyken ,  Axel Paul ,  Karl-Heinz Ross ,  Peter Wahl

    IPC分类号： B01J23/46 ,  B01J23/75 ,  B01J23/755 ,  C07B61/00 ,  C07C209/48 ,  C07C211/36

    CPC分类号： C07C209/48 ,  C07C2101/14

    摘要： A process for the preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine from 3-cyano-3,5,5-trimethylcyclohexanone which requires three spatially separated reaction spaces, in order to carry out the following three steps in sequence: a) reacting the 3-cyano-3,5,5-trimethylcyclohexanone with excess ammonia on acidic metal-oxide catalysts in a first reaction space at from 20.degree. to 150.degree. C. and from 50 to 300 bar, b) hydrogenating the resultant reaction products using hydrogen in a second reaction space in the presence of excess ammonia and preferably liquid ammonia on hydrogenation catalysts, optionally using basic components or on neutral or basic supports at from 50.degree. to 100.degree. C. and at from 50 to 300 bar, and c) hydrogenating the resultant reaction products in the presence of hydrogen and also ammonia in a third reaction space on hydrogenation catalysts, optionally using basic components or on neutral or basic supports at from 110.degree. to 160.degree. C. and at from 150 to 300 bar.These three steps in sequence provide a substantially complete reaction of the original 3-cyano-3,3,5-trimethylcyclohexanone reactant with a yield of 96% of the desired diamino product in which the cis-content of the diamine is 70%.

    摘要翻译： 从3-氰基-3,5,5-三甲基环己酮制备3-氨基甲基-3,5,5-三甲基环己胺的方法，其需要三个空间分离的反应空间，以便按顺序进行以下三个步骤：a ）在20至150℃和50至300巴的第一反应空间中使3-氰基-3,5,5-三甲基环己酮与过量的氨在酸性金属氧化物催化剂上反应，b）将所得反应物氢化 在氢化催化剂存在下，在过量氨和优选液氨存在下在第二反应空间中使用氢的产物，任选使用碱性组分或在中性或碱性载体上在50至100℃和50至300巴条件下，以及 c）在氢化催化剂的第三反应空间中，在氢气和氨的存在下氢化所得反应产物，任选使用碱性组分或在中性或碱性载体上在110至160℃和150至300b ar。 这三个步骤依次提供原始3-氰基-3,3,5-三甲基环己酮反应物的基本上完全的反应物，其中二胺的顺式含量为70％的所需二氨基产物的产率为96％。