知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

1023 条记录 (耗时 0.037 秒)

    Selective preparation of linear pentane-1,5-diamines in increased yields
    91.
    发明授权
    Selective preparation of linear pentane-1,5-diamines in increased yields 失效
    线性戊烷-1,5-二胺的选择性制备

    公开(公告)号：US5344983A

    公开(公告)日：1994-09-06

    申请号：US936084

    申请日：1992-08-26

    申请人： Tom Witzel ,  Eberhard Fuchs ,  Franz Merger ,  Claus-Ulrich Priester

    发明人： Tom Witzel ,  Eberhard Fuchs ,  Franz Merger ,  Claus-Ulrich Priester

    IPC分类号： B01J23/40 ,  B01J23/755 ,  B01J27/10 ,  B01J27/125 ,  B01J27/18 ,  C07B61/00 ,  C07C209/48 ,  C07C211/09 ,  C07C209/00

    CPC分类号： C07C209/48

    摘要： Process for preparing a pentane-1,5-diamine of the formula ##STR1## where R.sup.1 represents a variety of organic radicals including alkyl which can bear substituents such as hydroxyl, halogen, alkoxy, carbalkoxy, carboxyl, alkylamino, cycloalkyl or aryl, andR.sup.2 and R.sup.3 independently of one another, represent hydrogen or have the same meanings as R.sup.1 or together are a C.sub.4 -C.sub.7 -alkylene chain which is unsubstituted or substituted by one to five C.sub.1 -C.sub.4 -alkyl groups,which comprises:(a) reacting a .gamma.-cyanoketone of the formula ##STR2## where R.sup.1, R.sup.2 and R.sup.3 have the meanings given above, with excess ammonia in a first reaction space on an acidic heterogeneous catalyst at 20.degree.-150.degree. C. and 15-500 bar, and(b) hydrogenating the resulting reaction product in a second separate reaction space in the presence of excess ammonia on a cobalt, nickel or noble metal catalyst at 50.degree.-180.degree. C. and 30-500 bar.Novel pentane-1,5-diamines are obtained, in which R.sup.1 must contain at least two carbon atoms if R.sup.2 and R.sup.3 are both hydrogen. These new compounds containing two primary amine groups possess advantageous properties of lower volatility and also greater asymmetry (with different reactivity of the two amine functions). They provide useful curing agents for epoxides and act as improved components of polyamides.

    摘要翻译： 制备式（I）的戊烷-1,5-二胺的方法，其中R 1表示各种有机基团，包括可以带有取代基的烷基，例如羟基，卤素，烷氧基，烷氧基，羧基，烷基氨基，环烷基或 芳基和R 2和R 3彼此独立地表示氢或具有与R 1相同的含义或一起是未被取代或被一至五个C 1 -C 4 - 烷基取代的C 4 -C 7亚烷基链，其包含：（ a）在20-150℃的酸性非均相催化剂的第一反应空间中使具有上述含义的式（Ia）的式（II）的γ-氰基酮与过量的氨反应，其中R1，R2和R3具有上述含义， 15-500巴，（b）在钴，镍或贵金属催化剂的存在下，在50-180℃和30-500巴下，在第二分开的反应空间中，使得到的反应产物氢化。 得到新的戊烷-1,5-二胺，如果R2和R3都是氢，其中R1必须含有至少两个碳原子。 这些含有两个伯胺基团的新化合物具有较低的挥发性和更大的不对称性（两种胺官能团的不同反应性）的有利特性。 它们为环氧化物提供有用的固化剂，并且作为聚酰胺的改进组分。

    Method for preparing unsaturated compounds
    92.
    发明授权
    Method for preparing unsaturated compounds 失效
    不饱和化合物的制备方法

    公开(公告)号：US5321186A

    公开(公告)日：1994-06-14

    申请号：US977783

    申请日：1992-11-17

    申请人： Tadatoshi Honda ,  Kazuhiro Terada

    发明人： Tadatoshi Honda ,  Kazuhiro Terada

    IPC分类号： B01J27/18 ,  C07B61/00 ,  C07C5/48 ,  C07C11/02 ,  C07C253/24 ,  C07C255/07 ,  C07C2/00

    CPC分类号： C07C5/48 ,  C07C253/24 ,  Y02P20/52

    摘要： A method for preparing an unsaturated compound mainly comprising monoolefins, or a mixture of .alpha., .beta.-unsaturated nitriles and monoolefins comprises coming a mixed gas which comprises paraffins and oxygen, or paraffins, oxygen and ammonia in contact with a catalyst which comprises (1) an oxide of phosphorus and (2) at least one oxide selected from the group consisting of indium oxide and tin oxide or comprises, in addition to the foregoing catalytic components, (3) at least one oxide selected from the group consisting of vanadium oxide, tungsten oxide and molybdenum oxide. The method makes it possible to prepare monoolefins, or a mixture of .alpha., .beta.-unsaturated nitriles and monoolefins in high yield and high selectivity from cheap starting materials, parafins.

    摘要翻译： 制备主要包含单烯烃或α，β-不饱和腈和单烯烃的混合物的不饱和化合物的方法包括将包含链烷烃和氧气的链烷烃，氧和氨与催化剂接触的混合气体包括（1） 磷的氧化物和（2）选自氧化铟和氧化锡中的至少一种氧化物，或者除了上述催化组分外还包含（3）至少一种选自氧化钒， 氧化钨和氧化钼。 该方法使得可以从廉价的起始材料，石蜡中以高产率和高选择性制备单烯烃或α，β-不饱和腈和单烯烃的混合物。

    Isomerization of dimethylcyclohexanedicarboxylate
    93.
    发明授权
    Isomerization of dimethylcyclohexanedicarboxylate 失效
    二甲基环己烷二羧酸酯的异构化

    公开(公告)号：US5231218A

    公开(公告)日：1993-07-27

    申请号：US965307

    申请日：1992-10-23

    申请人： Charles E. Sumner, Jr. ,  William E. Choate

    发明人： Charles E. Sumner, Jr. ,  William E. Choate

    IPC分类号： B01J27/18 ,  B01J27/188 ,  C07B37/08 ,  C07B61/00 ,  C07C67/293 ,  C07C67/333 ,  C07C69/75

    CPC分类号： C07C67/293

    摘要： Provided is a fixed bed heterogeneous catalyst that promotes the isomerization of cis/trans-DMCD to trans-DMCD in economical fashion with short reaction times and in high purity. The catalyst is preferably H.sub.3 PO.sub.4 on a metal oxide, said metal oxide selected from a group consisting of ZrO.sub.2, TiO.sub.2, Al.sub.2 O.sub.3, and HfO.sub.2, or a tungsten-modified ZrO.sub.2.

    摘要翻译： 提供了一种固定床多相催化剂，其以经济的方式促进顺式/反式-DMCD异构化为反式DMCD，反应时间短且纯度高。 催化剂优选为金属氧化物上的H 3 PO 4，所述金属氧化物选自ZrO 2，TiO 2，Al 2 O 3和HfO 2，或钨改性的ZrO 2。

    Method of preparing hydrotreating catalyst for hydrocarbon oil
    97.
    发明授权
    Method of preparing hydrotreating catalyst for hydrocarbon oil 失效
    制备油气加氢催化剂的方法

    公开(公告)号：US5162281A

    公开(公告)日：1992-11-10

    申请号：US822081

    申请日：1992-01-17

    申请人： Tetsuro Kamo ,  Yuuki Kanai

    发明人： Tetsuro Kamo ,  Yuuki Kanai

    IPC分类号： B01J23/85 ,  B01J27/049 ,  B01J27/18 ,  B01J31/02 ,  B01J31/36 ,  B01J37/20 ,  C10G45/08 ,  C10G49/04

    CPC分类号： B01J37/20 ,  B01J23/85 ,  C10G45/08 ,  B01J31/0215

    摘要： Disclosed is a method of preparing a high-activity hydrotreating catalyst for hydrocarbon oil, where metals of Group VI (Mo and/or W) and Group VIII (Co and/or Ni) optionally along with phosphorus, and 0.3 to 3.5 molar times of the total molar amount of the metals of particular carboxylic acid(s) (tartaric acid, citric acid, etc.) and 0.1 times or more of the amount necessary for forming the active metals into their sulfides of particular organic sulfur compound(s) (mercapto-acetic acid, mercapto-succinic acid, etc.) are added to a material consisting essentially of at least one of inorganic acids and their hydrates, and they are kneaded shaped and dried at 200.degree. C. or lower. Using the catalyst, hydrotreatment, desulfurization and denitrogenation of hydrocarbon oil may be effected under mild conditions at a reduced operation cost.

    Process for the production of hydrogen cyanide
    98.
    发明授权
    Process for the production of hydrogen cyanide 失效
    生产氰化物的方法

    公开(公告)号：US5158787A

    公开(公告)日：1992-10-27

    申请号：US331980

    申请日：1989-04-03

    申请人： Yutaka Sasaki ,  Hiroshi Utsumi ,  Masato Otani

    发明人： Yutaka Sasaki ,  Hiroshi Utsumi ,  Masato Otani

    IPC分类号： C01C3/14 ,  B01J23/843 ,  B01J27/18 ,  B01J27/185 ,  B01J27/186 ,  B01J27/19 ,  B01J27/198 ,  C01C3/02

    CPC分类号： B01J23/002 ,  B01J23/8435 ,  B01J27/1853 ,  B01J27/19 ,  B01J27/198 ,  C01C3/0241 ,  B01J2523/00

    摘要： An iron-antimony oxide catalyst for use in the production of hydrogen cyanide by the vapor phase catalytic ammoxidation of methanol, and a process for the production of hydrogen cyanide in the presence of said improved catalyst are disclosed. This improved iron-antimony oxide catalyst is represented by the following formula:Fe.sub.a Cu.sub.b Sb.sub.c V.sub.d Mo.sub.e W.sub.f P.sub.g Q.sub.h R.sub.i S.sub.j O.sub.k (SiO.sub.2).sub.lwhereinQ is at least one element selected from the group consisting of Mg, Zn, La, Ce, Al, Cr, Mn, Co, Ni, Bi, U and Sn;R is at least one element selected from the group consisting of B and Te;S is at least one element selected from the group consisting of Li, Na, K, Rb, Cs, Ca and Ba; anda, b, c, d, e, f, g, h, i, j, k and l each represents the atomic ratio of the elements in the formula for which they are subscript whereinfor a=10,b=0.5-5,c=12-30,d=0-3,e=0-15,f=0-3,g=1-30,h=0-6,i=0-5,j=0-3,k=the number of oxygen atoms as determined corresponding to the oxide formed by combining the above-described elements, andl=25-200,and wherein c/g is more than 1.5 and iron antimony oxide is present as a crystalline phase.