Process for hydration of olefins
    3.
    发明授权
    Process for hydration of olefins 失效
    烯烃水合方法

    公开(公告)号:US4611086A

    公开(公告)日:1986-09-09

    申请号:US606641

    申请日:1984-05-03

    CPC分类号: C07C29/04

    摘要: A process for the preparation of aliphatic alcohols by hydration of olefins in the presence of a catalyst comprising a zeolitic crystalline silicoaluminate of the offretite type. The offretite used can be natural or sythetic. Particularly convenient among the olefins are olefins of low molecular weight having up to 5 carbon atoms. The alcohols obtained are used as solvents, as bases for lubricants and as adjuvants of essences.

    摘要翻译: 在催化剂存在下通过烯烃的水合制备脂肪族醇的方法,所述催化剂包含无色型沸石结晶硅铝酸盐。 所使用的漂白剂可以是天然的或合成的。 在烯烃中特别方便的是具有至多5个碳原子的低分子量烯烃。 获得的醇用作溶剂,作为润滑剂的碱和作为香精佐剂。

    Binary zeolitic systems, their synthesis and their utilization
    5.
    发明授权
    Binary zeolitic systems, their synthesis and their utilization 失效
    二元沸石系统及其合成及其利用

    公开(公告)号:US4946580A

    公开(公告)日:1990-08-07

    申请号:US348285

    申请日:1989-05-05

    摘要: The present invention concerns binary zeolitic systems comprising two zeolites A and B having different crystalline structures while having common structural units. The crystals of the zeolite A form a central core surrounded by a crown of crystals of zeolite B, the zeolites A and B being disposed concentrically and following the same longitudinal axis. These systems are formed by the introduction of a nucleation gel containing germs of the zeolite A in a growth gel where the crystallization parameters are favorable to the crystallization of the zeolite B. The binary zeolitic systems are useful as catalysts for transforming hydrocarbons and more especially as cracking catalysts.

    摘要翻译: 本发明涉及包含具有不同结晶结构的两个沸石A和B的二元沸石体系,同时具有共同的结构单元。 沸石A的晶体形成由沸石B的晶体顶部包围的中心核心,沸石A和B同心地设置并且沿着相同的纵向轴线。 这些体系通过在生长凝胶中引入含有沸石A的细菌的成核凝胶形成,其中结晶参数有利于沸石B的结晶。二元沸石体系可用作转化烃的催化剂,更特别的是用作 裂解催化剂。

    Process for reducing residuals content in vinyl aromatic polymers
    10.
    发明授权
    Process for reducing residuals content in vinyl aromatic polymers 有权
    降低乙烯基芳族聚合物残留物含量的方法

    公开(公告)号:US08541542B2

    公开(公告)日:2013-09-24

    申请号:US12374807

    申请日:2007-07-13

    摘要: The present invention relates to a process for reducing residuals content in a vinyl aromatic polymer, said residuals comprising essentially unpolymerized vinyl aromatic monomer, wherein the vinyl aromatic polymer in the molten state is brought in contact with a solid in powder capable to catalyze the alkylation of said residual vinyl aromatic monomer on the vinyl aromatic polymer. Advantage of the present invention is a sharp reduction of the unpolymerized vinyl aromatic monomer in the vinyl aromatic polymer without generating a new residual and without inducing a colored vinyl aromatic polymer. The present invention also relates to said vinyl aromatic polymer having a low residuals content.

    摘要翻译: 本发明涉及一种减少乙烯基芳族聚合物中残留物含量的方法,所述残余物包含基本上未聚合的乙烯基芳族单体,其中熔融状态的乙烯基芳族聚合物与能够催化烷基化的粉末中的固体接触 所述乙烯基芳族聚合物上的所述残余乙烯基芳族单体。 本发明的优点是在乙烯基芳族聚合物中未聚合的乙烯基芳族单体的急剧减少,而不会产生新的残留物并且不引起着色的乙烯基芳族聚合物。 本发明还涉及具有低残留含量的所述乙烯基芳族聚合物。