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    Technique for purifying polymer compositions
    15.
    发明申请
    Technique for purifying polymer compositions 有权
    聚合物组合物纯化技术

    公开(公告)号：US20070142593A1

    公开(公告)日：2007-06-21

    申请号：US11304473

    申请日：2005-12-15

    申请人： James Pawlow ,  William Hergenrother

    发明人： James Pawlow ,  William Hergenrother

    IPC分类号： C08F136/00

    CPC分类号： C08C2/04 ,  C08F6/02

    摘要： A method for preparing a polymer product, the method comprising polymerizing conjugated diene monomer, optionally together with vinyl aromatic monomer, within a hydrocarbon solvent by employing a lithium-containing initiator, thereby forming a living polymer cement, where about 0.04 to about 0.2 moles of the alkyl lithium initiator per 100 g of the monomer are employed, where the concentration of the monomer within the solvent is about 1 to about 30% by weight, and where the living polymer cement includes a lithium-containing residue, adding a quenching agent to the living polymer cement in an amount sufficient to quench all of the living polymer within the cement, thereby forming a non-living polymer cement, passing the non-living polymer cement through a purification medium, where the purification medium includes alumina, silica, or both, thereby separating at least part of the lithium-containing residue from the polymer cement, collecting the polymer cement after passing the cement through the purification medium, adding an antioxidant, and desolventizing the polymer cement.

    摘要翻译： 一种制备聚合物产品的方法，该方法包括通过使用含锂引发剂在烃溶剂内将共轭二烯单体（任选地与乙烯基芳族单体一起）聚合，由此形成活性聚合物粘合剂，其中约0.04至约0.2摩尔 使用每100g单体的烷基锂引发剂，其中溶剂中单体的浓度为约1至约30重量％，并且其中活性聚合物水泥包含含锂残渣，并将淬灭剂加入到 所述活性聚合物水泥的量足以使所述水泥中的所有活性聚合物淬火，从而形成非活性聚合物水泥，使所述非活性聚合物水泥通过净化介质，其中所述纯化介质包括氧化铝，二氧化硅或 从而将至少部分含锂残余物从聚合物水泥分离出来，在通过水泥之后收集聚合物水泥 通过净化介质，加入抗氧化剂，并使聚合物胶浆脱水。