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24 条记录 (耗时 0.021 秒)

    Joint preparation of 3-dialkylaminopropionitriles, bis-(2-cyanoethyl) ether and, if desired, ethylene-cyanohydrin
    2.
    发明授权
    Joint preparation of 3-dialkylaminopropionitriles, bis-(2-cyanoethyl) ether and, if desired, ethylene-cyanohydrin 失效
    联合制备3-二烷基氨基丙腈，双（2-氰基乙基）醚和（如果需要）乙烯 - 氰醇

    公开(公告)号：US4965362A

    公开(公告)日：1990-10-23

    申请号：US376373

    申请日：1989-07-06

    申请人： Franz Merger ,  Wolfgang Harder ,  Peter Hettinger ,  Claus-Ulrich Priester ,  Dieter Franz ,  Dieter Voges

    发明人： Franz Merger ,  Wolfgang Harder ,  Peter Hettinger ,  Claus-Ulrich Priester ,  Dieter Franz ,  Dieter Voges

    IPC分类号： C07C253/18 ,  C07C255/12 ,  C07C255/13 ,  C07C255/24

    CPC分类号： C07C255/12 ,  C07C255/13 ,  C07C255/24

    摘要： 3-Dialkylaminopropionitriles ##STR1## where R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.4 -alkyl which may furthermore be bonded to form a 5-membered or 6-membered ring, bis-(2-cyanoethyl) ether IINC--CH.sub.2 --CH.sub.2 --O--CH.sub.2 --CH.sub.2 --CN IIand, if desired, ethylenecyanohydrin IIIHO--CH.sub.2 --CH.sub.2 --CN IIIare prepared jointly by a process in which(a) acrylonitrile and water are reacted in the presence of a base at from 60.degree. to 150.degree. C. to give a mixture of acrylonitrile, water and bis-(2-cyanoethyl) ether II, the base being a mineral base, a quaternary nitrogen base or a mixture of these,(b) this mixture is reacted at about 0.degree.-50.degree. C. with a dialkylamine of the general formula IV ##STR2## to give a mixture of water, a dialkylaminopropionitrile I and bis-(2-cyanoethyl) ether II, and this mixture is separated into its components and(c) if desired, the ether II obtained in proces stage (b) or an aqueous solution of this ether and/or the reacted mixtures containing this ether and obtained from process stage (a) or (b) is allowed to react at from 50.degree. to 150.degree. C. with the dialkylamine IV to give a mixture of a 3-dialkylaminopropionitrile I and ethylenecyanohydrin III, and, if desired, the said mixture is separated into its components.

    摘要翻译： 3-二烷基氨基丙腈其中R 1和R 2各自为可以连接形成5元或6元环的C 1 -C 4 - 烷基，双 - （2-氰基乙基）醚II NC-CH 2 -CH 2 - O-CH 2 -CH 2 -CN II和如果需要，乙烯基氰醇III HO-CH 2 -CH 2 -CN III通过以下方法共同制备，其中（a）丙烯腈和水在碱的存在下在60℃至 150℃，得到丙烯腈，水和双 - （2-氰基乙基）醚II的混合物，碱为矿物碱，季氮碱或它们的混合物，（b）该混合物在约0℃ 与二烷基胺（通式IV IV）反应，得到水，二烷基氨基丙腈I和双 - （2-氰基乙基）醚II的混合物，将该混合物分离成其组分，（c ）如果需要，在步骤阶段（b）中获得的醚II或该醚的水溶液和/或含有该醚的反应混合物从工艺步骤（a）或（b）获得， 使其与二烷基胺IV在50-150℃下反应，得到3-二烷基氨基丙腈I和乙基烯丙醇III的混合物，如果需要，将所述混合物分离成其组分。

    Preparation of 1-alkyl- or 1-cycloalkylpiperazines
    3.
    发明授权
    Preparation of 1-alkyl- or 1-cycloalkylpiperazines 失效
    1-烷基 - 或1-环烷基哌嗪的制备

    公开(公告)号：US4736030A

    公开(公告)日：1988-04-05

    申请号：US791112

    申请日：1985-10-24

    申请人： Herbert Mueller ,  Dieter Voges ,  Wolfgang Lengsfeld

    发明人： Herbert Mueller ,  Dieter Voges ,  Wolfgang Lengsfeld

    IPC分类号： C07D295/02 ,  C07D295/023 ,  C07D405/04

    CPC分类号： C07D295/023

    摘要： 1-Alkyl- or 1-cycloalkylpiperazines are prepared by reacting piperazine with an alkanol or cycloalkanol in the presence of hydrogen and a hydrogenation/dehydrogenation catalyst by a process in which the reaction is carried out at from 130.degree. to 190.degree. C. under from 5 to 100 bar in the presence of from 5 to 40% by weight, based on the reaction mixture, of water, and the molar ratio of piperazine to alkanol or cycloalkanol is kept at from 1:1.5 to 1:8.

    摘要翻译： 1-烷基 - 或1-环烷基哌嗪通过在氢气和氢化/脱氢催化剂的存在下使哌嗪与链烷醇或环烷醇反应来制备，其中反应在130-190℃下进行， 在5至40重量％的存在下，基于反应混合物，水的摩尔比为5至100巴，哌嗪与链烷醇或环烷醇的摩尔比保持在1:1.5至1:8。

    Anti-lock braking method to retard the wheels of a vehicle
    5.
    发明授权
    Anti-lock braking method to retard the wheels of a vehicle 失效
    防抱死制动方法来延缓车辆的车轮

    公开(公告)号：US5342118A

    公开(公告)日：1994-08-30

    申请号：US39439

    申请日：1993-04-30

    申请人： Wolfgang Kampfmann ,  Hubert Schmitt ,  Dieter Voges

    发明人： Wolfgang Kampfmann ,  Hubert Schmitt ,  Dieter Voges

    IPC分类号： B60T8/66 ,  B60T8/173 ,  B60T8/1763 ,  B60T8/62 ,  B60T8/64 ,  B60T8/70

    CPC分类号： B60T8/173

    摘要： An anti-lock braking method to retard the wheels of a vehicle provides thatbrake pressure be augmented or reduced or maintained constant in response to slip and/or the change in the rotational speed (positive or negative deceleration) of a retarded wheel as related to at least one threshold value, andthe respective renewed accelerations of the retarded wheels be measured during successive control cycles of the anti-lock braking so as to raise the threshold value or prevent a reduction of the brake pressure for a predetermined period of time in order to suppress undesired control operations which are releasable above all by oscillations of the vehicle axle. To avoid interference of the ABS control by axle oscillations, it is provided thata raised threshold value is maintained for a given period of time and then lowered once more to the basic value if no wheel retardation is measured and the threshold value is not exceeded either during this given period of time, the given period of time being somewhat longer than one axle oscillation period of a vehicle axle, whereasin the event that the threshold value is failed to be reached within the given period of time, this will not initiate a reduction of the brake pressure of the wheel, and a period of time will be measured during which the threshold value remains to be fallen short of, andin the event that this measured period of time is shorter than a predetermined period of time, reduction of the brake pressure continues to be precluded for an additional period of time which is at least as long as one typical axle oscillation period of the vehicle axle.

    摘要翻译： 用于延迟车辆的车轮的防抱死制动方法提供了制动压力响应于延迟轮的滑动和/或转速（正或负减速度）的变化而增大或减小或保持恒定，与 至少一个阈值，并且在防抱死制动的连续控制循环期间测量延迟轮的相应的更新的加速度，以便提高阈值或者防止制动压力降低预定时间段 以抑制首先通过车辆轴的振荡而可释放的不期望的控制操作。 为了避免ABS控制通过轴振动的干扰，提供了在给定时间段内保持升高的阈值，然后如果没有测量车轮延迟并且不超过阈值，则再次降低到基本值 在给定的时间段内，给定的时间段比车轴的一个轴振荡周期稍长，而在给定的时间段内不能达到阈值的情况下，这不会启动 将测量车轮的制动压力的降低和一段时间，在此期间阈值将保持不足，并且在该测量的时间段短于预定时间段的情况下，减少 制动压力继续被排除了至少与车轴的一个典型轴振荡周期一样长的时间段。

    Preparation of 3-hydroxytetrahydrofuran
    8.
    发明授权
    Preparation of 3-hydroxytetrahydrofuran 失效
    3-羟基四氢呋喃的制备

    公开(公告)号：US4539415A

    公开(公告)日：1985-09-03

    申请号：US587163

    申请日：1984-03-07

    申请人： Herbert Mueller ,  Dieter Voges

    发明人： Herbert Mueller ,  Dieter Voges

    IPC分类号： C07D307/20

    CPC分类号： C07D307/20

    摘要： A process for the preparation of 3-hydroxytetrahydrofuran by catalytic dehydration of butane-1,2,4-triol, in which a catalyst chosen from the group of the bleaching earths is used and the dehydration is carried out in the presence of not less than 3 moles of water per mole of butane-1,2,4-triol.

    摘要翻译： 通过丁烷-1,2,4-三醇的催化脱水制备3-羟基四氢呋喃的方法，其中使用选自漂白土组的催化剂，并且在不少于 每摩尔丁烷-1,2,4-三醇3摩尔水。

    Preparation of catalysts for the hydrogenation of acetylene-alcohols
    10.
    发明授权
    Preparation of catalysts for the hydrogenation of acetylene-alcohols 失效
    乙炔醇氢化催化剂的制备

    公开(公告)号：US4287099A

    公开(公告)日：1981-09-01

    申请号：US143486

    申请日：1980-04-24

    申请人： Karl Baer ,  Wolfgang Reiss ,  Wolfgang Schroeder ,  Dieter Voges

    发明人： Karl Baer ,  Wolfgang Reiss ,  Wolfgang Schroeder ,  Dieter Voges

    IPC分类号： B01J23/88 ,  C07B61/00 ,  C07C27/00 ,  C07C29/154 ,  C07C29/17 ,  C07C31/02 ,  C07C31/20 ,  C07C67/00 ,  B01J21/04 ,  B01J23/72 ,  B01J23/84

    CPC分类号： B01J23/8898 ,  C07C29/172

    摘要： A process for the preparation of a hydrogenation catalyst which contains the oxides of the metals nickel, copper, molybdenum and aluminum and/or iron, and may or may not contain manganese oxide, by precipitating a solution of salts of the metals with an alkali metal carbonate at from 35.degree. to 95.degree. C. and a pH of from 5 to 9 and heating the precipitate at from 350.degree. to 700.degree. C., the amount of the metal salts being selected so that the catalyst contains from 5 to 70 percent by weight of aluminum oxide and/or iron oxide, the remainder being principally nickel oxide and, based on nickel oxide, from 20 to 40 percent by weight of copper oxide, from 0.5 to 6 percent by weight of molybdenum oxide and from 0 to 10 percent by weight of manganese oxide.

    摘要翻译： 制备含有金属镍，铜，钼和铝和/或铁的氧化物的氢化催化剂的方法，并且可以或可以不含氧化锰，通过用碱金属沉淀金属盐溶液 35至95℃的碳酸盐和5至9的pH，并在350℃至700℃下加热沉淀物，选择金属盐的量使催化剂含有5-70％ 的氧化铝和/或氧化铁，其余部分主要是氧化镍，以氧化镍为基准，为氧化铜为20〜40重量％，氧化钼为0.5〜6重量％，氧化钼为0〜10 重量百分比的氧化锰。