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139 条记录 (耗时 0.011 秒)

    Process for hydrocarbyl trisulfide product
    72.
    发明公开
    Process for hydrocarbyl trisulfide product 失效
    Verfahren zur Herstellung von Hydrocarbyltrisulfide-Produkt。

    公开(公告)号：EP0554011A2

    公开(公告)日：1993-08-04

    申请号：EP93300452.5

    申请日：1993-01-22

    申请人： ETHYL CORPORATION

    发明人： Ozbalik, Nubar

    IPC分类号： C07C319/24 ,  C07C321/14

    CPC分类号： C07C319/24 ,  C07C321/14

    摘要： A method for preparing an essentially chlorine free additive mixture for oleaginous fluids containing less than 15 wt.% dialkyl higher-polysulfides, the process comprising: a) forming a reaction mass comprising olefin, a sulfur source, and a catalyst; b) heating the reaction mass to a temperature and for a period of time sufficient to form a mixture of olefin, alkyl mercaptan, dialkyl disulfide, dialkyl trisulfide and dialkyl higher-polysulfides; and c) refluxing the reaction mass obtained in (b) at a temperature and for a period of time sufficient to convert at least a portion of the dialkyl higher-polysulfides to dialkyl trisulfide so as to obtain the additive mixture containing less than 15 wt.% dialkyl higher-polysulfides.

    摘要翻译： 一种制备基本上不含氯的添加剂混合物的方法，其含有少于15重量％的二烷基高级多硫化物的含油流体，所述方法包括：a）形成包含烯烃，硫源和催化剂的反应物料; b）将反应物质加热到足以形成烯烃，烷基硫醇，二烷基二硫醚，二烷基三硫化物和二烷基高级多硫化物的混合物的温度和一段时间; 和c）在（b）中获得的反应物质在足以将至少一部分二烷基高级多硫化物转化为二烷基三硫化物的温度和时间内回流，以获得含有小于15wt。 ％二烷基高级多硫化物。

    Production of dihydrocarbyl polysulfides
    74.
    发明公开
    Production of dihydrocarbyl polysulfides 失效
    Herstellung von Dihydrocarbylpolysulfiden。

    公开(公告)号：EP0506347A1

    公开(公告)日：1992-09-30

    申请号：EP92302544.9

    申请日：1992-03-25

    申请人： ETHYL CORPORATION

    发明人： Ozbalik, Nubar

    IPC分类号： C07C319/24 ,  C07C321/14

    CPC分类号： C07C319/24

    摘要： Hydrocarbyl mercaptan is reacted with sulfur in the presence of added alumina catalyst. With tertiary alkyl mercaptans high yields of di-tert-alkyl trisulfides are formed with excellent selectivity. With primary alkyl mercaptans the process can be controlled to form products enriched in either dialkyl disulfides or dialkyl trisulfides, and in either case little or no tetrasulfides are formed. The process is environmentally friendly in that halogen-containing reactants such as sulfur chlorides are not used and thus the products are not contaminated with significant amounts of halogen residues.

    摘要翻译： 在加入的氧化铝催化剂的存在下，烃硫醇与硫反应。 对于叔烷基硫醇，以高选择性形成高产率的二叔烷基三硫化物。 对于伯烷基硫醇，可以控制该方法以形成富含二烷基二硫化物或二烷基三硫化物的产物，并且在任一种情况下几乎不形成或不形成四硫化物。 该方法是环境友好的，因为不使用含卤素的反应物如氯化亚铜，因此产物不被大量卤素残留物污染。

    Bis-(2-Aminocarbonylcycloalk-1-enyl)-disulfides, their preparation and use
    75.
    发明公开
    Bis-(2-Aminocarbonylcycloalk-1-enyl)-disulfides, their preparation and use 失效
    二 - （2-氨基羰基环烯-1-烯基） - 二硫化物，Herstellung und Verwendung。

    公开(公告)号：EP0478194A1

    公开(公告)日：1992-04-01

    申请号：EP91308403.4

    申请日：1991-09-13

    申请人： ZENECA LIMITED

    发明人： Austin, Peter William ,  Tyreman, Neville

    IPC分类号： C07C323/61 ,  C07D275/04 ,  C07C319/24 ,  A01N37/36

    CPC分类号： C07D275/04 ,  C07C323/61 ,  C07C2601/10

    摘要： A compound of the formula
    in which R 1 and R 2 taken together, and R 3 and R 4 taken together, independently represent a polymethylene chain having 3 or 4 carbon atoms, or a polymethylene chain having 3 or 4 carbon atoms substituted by at least one lower alkyl radical having from 1 to 4 carbon atoms, and R 5 to R 8 are independently hydrogen, hydrocarbyl or substituted hydrocarbyl. Typically R 1 and R 2 and also R 3 and R 4 complete a trimethylene ring, R 5 and R 7 are each hydrogen and R 6 and R 8 are alkyl such as methyl. The compounds have microbiological activity.

    摘要翻译： 其中R 1和R 2一起并且R 3和R 4组合在一起的式CHEM的化合物独立地表示具有3或4个碳原子的多亚甲基链，或多亚甲基 具有3至4个碳原子的链，其被至少一个具有1至4个碳原子的低级烷基取代，R 5至R 8独立地为氢，烃基或取代的烃基。 通常R 1和R 2以及R 3和R 4完成三亚甲基环，R 5和R 7各自为氢，R 6和R 8为烷基 如甲基。 这些化合物具有微生物活性。