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    • 7. 发明申请
    • TECHNIQUE FOR PURIFYING POLYMER COMPOSITIONS
    • 纯化聚合物组合物的技术
    • WO2007070492A1
    • 2007-06-21
    • PCT/US2006/047305
    • 2006-12-11
    • FIRESTONE POLYMERS, LLCPAWLOW, JamesHERGENROTHER, William
    • PAWLOW, JamesHERGENROTHER, William
    • C08C2/04C08F6/08
    • C08C2/04C08F6/02
    • Method for preparing polymer products, comprising polymerizing conjugated diene monomer, optionally together with vinyl aromatic monomer, within hydrocarbon solvent by employing lithium-containing initiator, thereby forming living polymer cement, where about 0.04 to about 0.2 moles of alkyl lithium initiator per 100 g monomer are employed, where the concentration of monomer within solvent is about 1 to about 30% by weight, and where the living polymer cement includes lithium-containing residue, adding a quenching agent to the living polymer cement in an amount sufficient to quench 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.
    • 制备聚合物产品的方法,包括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,从而形成活性聚合物粘合剂,其中每100克单体约0.04至约0.2摩尔烷基锂引发剂 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,并且以足以淬灭活性聚合物的量向活性聚合物粘合剂中加入猝灭剂 在水泥中,从而形成非活性聚合物水泥,使非活性聚合物水泥通过纯化介质,其中纯化介质包括氧化铝,二氧化硅或两者,从而将至少部分含锂残渣从 聚合物水泥,在将水泥通过净化介质后收集聚合物水泥,加入抗氧化剂 xidant,并使聚合物水泥脱溶剂。