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    • 1. 发明授权
    • Elastomeric sol/gel blends
    • 弹性溶胶/凝胶共混物
    • US4520169A
    • 1985-05-28
    • US414451
    • 1982-09-02
    • John F. HagmanChi-Kai Shih
    • John F. HagmanChi-Kai Shih
    • C08L23/16C08K5/17C08L7/00C08L21/00C08L23/00C08L23/08C08L33/00C08L33/02C08L73/00C08L101/00C08L13/00C08L23/34
    • C08L23/08C08L73/00C08L23/00
    • The processability of an uncured soft elastomer is improved by blending the elastomer under shear conditions with a terpolymer of ethylene with carbon monoxide and with a copolymerizable ethylenically unsaturated monomer in the presence of a crosslinking agent for polymer (T) which does not substantially cure elastomer (E). Gel resulting from crosslinking polymer (T) improves the properties of the blend as compared with the soft elastomer alone. When elastomer (E) and the crosslinking agent for polymer (T) risk undergoing a reaction which would result in substantially crosslinking elastomer (E), one may substitute another soft elastomer (E.sub.1) for elastomer (E) to avoid this undesirable result and then blend the resulting composition with elastomer (E).
    • 未固化的软质弹性体的加工性通过在剪切条件下与乙烯与一氧化碳的三元共聚物和可共聚的烯属不饱和单体在不实质固化弹性体的聚合物(T)的交联剂存在下共混来提高, E)。 与单独的软质弹性体相比,由交联聚合物(T)产生的凝胶改善了共混物的性能。 当弹性体(E)和聚合物(T)的交联剂经历会导致基本上交联弹性体(E)的反应的风险时,可以用另一种软弹性体(E1)替代弹性体(E),以避免不期望的结果,然后 将所得组合物与弹性体(E)共混。
    • 4. 发明授权
    • Staged feeding process for mixing polymers
    • 混合聚合物的分级进料方法
    • US5889112A
    • 1999-03-30
    • US975881
    • 1997-11-21
    • Chi-Kai ShihDaniel Gregory TynanRita Sue McMinn
    • Chi-Kai ShihDaniel Gregory TynanRita Sue McMinn
    • C08J3/20B01F3/18B01F7/08C08G81/00C08G81/02C08J3/00C08L77/00C08L101/00C08G63/48C08G63/91
    • C08J3/005C08G81/028
    • A staged feeding process for preparing a composition by mixing at least a first polymer and a second, dissimilar polymer forms a final composition comprising a uniform, small-particle dispersion of the first polymer in a matrix of the second polymer. Preferably, the first polymer has a melt viscosity greater than the second polymer. The process comprises the steps of feeding the first polymer in a first feed stage and feeding all of the second polymer as a melt at least two feed stages to mix the first and second polymers. Alternatively, the process may comprise feeding the first polymer in a first feed stage and feeding all of the second polymer in at least two feed stages subsequent to the first feed stage. In either case, this mixing initiates a chemical reaction between the first and second polymers.
    • 通过混合至少第一聚合物和第二异种聚合物来制备组合物的分级进料方法形成包含第一聚合物的均匀的小颗粒分散体在第二聚合物的基质中的最终组合物。 优选地,第一聚合物的熔体粘度大于第二聚合物。 该方法包括以下步骤:在第一进料段中进料第一聚合物,并将所有第二聚合物作为熔体进料至少两个进料阶段,以混合第一和第二聚合物。 或者,该方法可以包括在第一进料阶段中进料第一聚合物并在第一进料阶段之后的至少两个进料阶段中将所有第二聚合物进料。 在任一情况下,该混合引发第一和第二聚合物之间的化学反应。