Process for direct olefin oxidation
    1.
    发明授权
    Process for direct olefin oxidation 失效
    直接烯烃氧化工艺

    公开(公告)号:US3993672A

    公开(公告)日:1976-11-23

    申请号:US499174

    申请日:1974-08-21

    IPC分类号: C07D301/06 C07D303/04

    CPC分类号: C07D303/04 C07D301/06

    摘要: Olefins containing from 3 to 30 carbon atoms are directly oxidized to epoxides and allyl alcohols in the liquid phase by contact with a gas stream comprising oxygen but substantially free from hydrogen, in the presence of two metal compound catalysts which are soluble in the reaction mixture. The catalysts are preferably a compound of a Group VII or VIII metal and a compound of a Group VA or VIA transition metal.

    摘要翻译: 含有3至30个碳原子的烯烃在可溶于反应混合物的两种金属化合物催化剂的存在下,通过与包含氧但基本上不含氢的气流接触,直接氧化成液相中的环氧化物和烯丙醇。 催化剂优选为VII族或VIII族金属的化合物和VA族或VIA过渡金属的化合物。

    Photosensitive layer and method of forming a photographic image therefrom
    2.
    发明授权
    Photosensitive layer and method of forming a photographic image therefrom 失效
    感光层及其形成摄影图像的方法

    公开(公告)号:US4010033A

    公开(公告)日:1977-03-01

    申请号:US665388

    申请日:1976-03-10

    CPC分类号: G03C1/685 Y10S430/163

    摘要: A photosensitive layer comprises (a) at least one heterocyclic photochromic spiropyrane which can exist in a closed or open structure, the closed structure being converted to the open structure on irradiation with ultra-violet light, and the open structure being reconverted to the closed structure on irradiation with visible light, (b) at least one ortho-substituted nitrogen-containing thioether, and (c) at least one reagent capable of developing a latent image produced in the layer. In use of the layer, it is exposed to ultra-violet or visible light, and after exposure the layer is heated to cause conversion of the thioether to a thione at those areas of the layer in which spiropyrane in the open form is present: the spiropyrane in the open form catalyzing the conversion of thioether to thione and thereby amplifying the latent image produced on irradiation of the layer. The thione produced then reacts with the developing reagent to form a visible image.

    摘要翻译: 感光层包含(a)至少一种可以封闭或开放结构存在的杂环光致变色螺旋体,该封闭结构在紫外线照射下转化为开放结构,并且该开放结构再转化为封闭结构 在可见光照射下,(b)至少一种邻位取代的含氮硫醚,和(c)能够显影在该层中产生的潜像的至少一种试剂。 在使用该层时,将其暴露于紫外线或可见光下,暴露后,加热该层,以使硫醚转化成硫酸盐,该层中存在开放形式的螺吡喃的那些区域: 螺旋吡喃以开放形式催化硫醚转化为硫酮,从而扩大了在该层照射下产生的潜像。 所产生的硫酮然后与显影试剂反应以形成可见的图像。