Process for producing highly branched polyisoolefins
    4.
    发明授权
    Process for producing highly branched polyisoolefins 失效
    生产高度支化的聚异戊烯的方法

    公开(公告)号:US6156859A

    公开(公告)日:2000-12-05

    申请号:US888253

    申请日:1997-07-07

    CPC分类号: C08F210/10 C08F236/08

    摘要: Highly branched polyisoolefines are produced according to the invention by the polymerization of isoolefines in a single-stage process, in solution, suspension or in the gas phase in the presence of bifunctional monomers which contain at least one group capable of cationic polymerization and at least one group which serves as an initiator for the cationic polymerization of isoolefines (inimer), at temperatures from +20 to -100.degree. C., optionally in the presence of inert, organic solvents, and in the presence of alkylalumoxanes (coinitiator).

    摘要翻译: 根据本发明,通过在单阶段方法,溶液,悬浮液或气相中,在含有至少一个能够阳离子聚合的基团和至少一个基团的双官能单体的存在下,异烯烃的聚合制备高分支多异丁烯粉末 在+20至-100℃的温度下,任选地在惰性有机溶剂存在下,并且在烷基铝氧烷(共引发剂)存在下,其用作阳离子聚合异烯烃(inimer)的引发剂。

    Process for the metathesis of partly fluorinated hydrocarbons
    8.
    发明授权
    Process for the metathesis of partly fluorinated hydrocarbons 失效
    一些氟化烃的组成过程

    公开(公告)号:US5146017A

    公开(公告)日:1992-09-08

    申请号:US776553

    申请日:1991-10-15

    CPC分类号: C07C17/00 C07C21/18

    摘要: A process is described for the reaction of at least one partly fluorinated alkene with catalysts containing tungsten complex compounds, at 10.degree. to 200.degree. C., if appropriate in the presence of at least one inert solvent. A mixture of a partly fluorinated alkene with another partly fluorinated alkene or with a non-fluorinated alkene can also be employed for the reaction. Longer-chain partly fluorinated compounds are thereby obtained which contain at least one internal C.dbd.C double bond. Ethylene or a short-chain alkene is furthermore produced and is separated off from the reaction mixture. The longer-chain partly fluorinated compounds are valuable intermediates and can be hydrogenated to give, for example, highly heat-resistant special lubricants.

    摘要翻译: 对于至少一种部分氟化的烯烃与含有钨络合物的催化剂在10℃至200℃下反应的方法,如果合适的话,在至少一种惰性溶剂的存在下进行描述。 部分氟化烯烃与另一部分氟化烯烃或非氟化烯烃的混合物也可用于该反应。 从而获得含有至少一个内部C = C双键的较长链部分氟化化合物。 此外产生乙烯或短链烯烃,并与反应混合物分离。 较长链部分氟化的化合物是有价值的中间体,并且可以被氢化得到例如高耐热特殊润滑剂。