Direct synthesis by cationic polymerization of nitrogen-containing polymers
    51.
    发明公开
    Direct synthesis by cationic polymerization of nitrogen-containing polymers 失效
    聚合物Polymeren durch kationische聚合。

    公开(公告)号:EP0349195A2

    公开(公告)日:1990-01-03

    申请号:EP89306315.6

    申请日:1989-06-22

    CPC分类号: C08F4/00 C08F2/38

    摘要: A method is provided for the direct synthesis of novel polymeric materials functionalized with desirable nitrogen-containing functional groups such as terminal azido, cuano, carbonylamino or thiocarbonylamino groups. Polymerization and functionalization occur in a substantially simultaneous manner. All necessary reactants for the functionalization are present when polymerization is initiated. The nitrogen-containing functional group is provided as a part of a molecule having a release moiety which is preferably resonance stabilized or of tertiary alkyl type and which acts to aid the nitrogen-containing species in functioning as a leaving group.

    摘要翻译: 提供了用于直接合成用所需的含氮官能团如末端叠氮基,氨基,羰基氨基或硫代羰基氨基官能化的新型聚合物的方法。 聚合和官能化基本上同时发生。 当聚合开始时,存在用于官能化的所有必需的反应物。 含氮官能团作为具有优选共振稳定的释放部分或叔烷基型的分子的一部分提供,并且用于帮助含氮物质起到离去基团的作用。

    Zeolite L
    60.
    发明公开
    Zeolite L 失效
    Zeolith L.

    公开(公告)号:EP0323893A2

    公开(公告)日:1989-07-12

    申请号:EP89300037.2

    申请日:1989-01-04

    IPC分类号: C01B33/34 C01B33/32 C07C7/13

    摘要: Zeolite L in very small crystalline form is prepared by a process in which an alkaline reaction mixture comprising water, a source of silicon (SiO₂), a source of alkali metal (M) (KOH) and a source of aluminium (Al₂O₃.3H₂O) or gallium is heated to a temperature of at least 80°C for a period of time long enough to form zeolite L, the composition of the reaction mixture having the following molar ratios (expressed as oxides):

    where M is potassium or a mixture of potassium and one or more other alkali metals.
    Use thereof for the separation of the 1,5; 2,6 and 2,7 isomers of dimethyl naphtalene from one another.

    摘要翻译: 以非常小的结晶形式的沸石L通过以下方法制备,其中包括水,硅源(SiO 2),碱金属(M)(KOH)源和铝源(Al 2 O 3·3H 2 O) 或镓被加热到至少80℃的温度足够长的时间以形成沸石L,反应混合物的组成具有以下摩尔比(表示为氧化物):其中M是钾或 钾和一种或多种其它碱金属的混合物。 用于分离1,5; 2,6和2,7个二甲基萘的异构体。