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    Process for transitioning between incompatible catalysts using a substantially contaminant free seedbed
    1.
    发明授权
    Process for transitioning between incompatible catalysts using a substantially contaminant free seedbed 有权
    使用基本上无污染的苗床在不相容的催化剂之间过渡的方法

    公开(公告)号：US06867270B2

    公开(公告)日：2005-03-15

    申请号：US10720511

    申请日：2003-11-24

    申请人： Bruce Jon Savatsky ,  Kelli Lynne Tilston ,  Thomas Redden Veariel

    发明人： Bruce Jon Savatsky ,  Kelli Lynne Tilston ,  Thomas Redden Veariel

    IPC分类号： C08F20060101 ,  C08F2/00 ,  C08F2/34 ,  C08F2/38 ,  C08F2/42 ,  C08F4/42 ,  C08F10/00

    CPC分类号： C08F10/00 ,  Y10S526/901 ,  C08F2/42 ,  C08F2/01 ,  C08F2/34

    摘要： The present invention is a process for transitioning from a first polymerization reaction to a second polymerization reaction incompatible with the first polymerization reaction in a gas-phase reactor. The novel process comprises conducting multiple polymerization reactions, capturing and storing a substantially contaminant-free polymerization product from each multiple polymerization reaction for use as a selected substantially contaminant-free seedbed in a second polymerization, wherein the polymerization product from each multiple polymerization reaction is rendered substantially contaminant-free by stripping or venting reactants and contaminants and is maintained as substantially contaminant-free by storage under an inert atmosphere.

    摘要翻译： 本发明是在气相反应器中从第一聚合反应转变成与第一聚合反应不相容的第二聚合反应的方法。 该新方法包括进行多次聚合反应，从第二次聚合反应中收集并存储每个多重聚合反应中基本上不含污染物的聚合产物，用作所选择的基本上不含污染物的床，其中来自每个多重聚合反应的聚合产物 通过汽提或排出反应物和污染物而基本上无污染，并通过在惰性气氛下储存而保持基本上无污染。