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    Stabilized slurries of isoolefin polymers
    5.
    发明授权
    Stabilized slurries of isoolefin polymers 失效
    稳定的异烯烃聚合物浆料

    公开(公告)号：US4474924A

    公开(公告)日：1984-10-02

    申请号：US461678

    申请日：1983-01-27

    申请人： Kenneth W. Powers ,  Hsien C. Wang

    发明人： Kenneth W. Powers ,  Hsien C. Wang

    IPC分类号： C08L23/18 ,  C08F2/00 ,  C08F2/04 ,  C08F2/06 ,  C08F6/00 ,  C08F6/06 ,  C08F6/24 ,  C08F8/00 ,  C08F8/04 ,  C08F10/00 ,  C08F10/10 ,  C08F210/12 ,  C08L7/00 ,  C08L21/00 ,  C08L23/00 ,  C08L23/20 ,  C08L23/22 ,  C08L51/00 ,  C08L51/02 ,  C08L53/00 ,  C08L77/00 ,  C08L101/00 ,  C08K5/02

    CPC分类号： C08F8/04 ,  C08F6/24 ,  C08L23/22 ,  Y10S524/923

    摘要： Polymerization slurries of elastomeric isoolefin homopolymers and copolymers, such as butyl rubber, in diluents such as methyl chloride are effectively stabilized against agglomeration of polymer particles through addition of minor proportions of an hydrogenated preformed copolymer stabilizer having both a lyophobic and a lyophilic portion. The chemical and structural nature of the lyophobic and lyophilic portions which comprise the copolymer stabilizer are significant in determining the extent and method of hydrogenation for production of the most effective stabilizer. Agglomeration of polymer products is effectively prevented, yielding a number of significant processing advantages. The process is especially adaptable to the production of isobutylene-isoprene butyl rubber.

    摘要翻译： 弹性体异烯烃均聚物和共聚物如丁基橡胶在稀释剂如氯甲烷中的聚合浆料通过加入少量比例的具有疏液性和亲液性部分的氢化预成型共聚物稳定剂，有效地稳定了聚合物颗粒的聚集。 包含共聚物稳定剂的疏液和亲液部分的化学和结构性质在确定生产最有效稳定剂的氢化程度和方法方面是显着的。 有效防止了聚合物产品的聚集，产生了许多显着的加工优点。 该方法特别适用于异丁烯 - 异戊二烯丁基橡胶的生产。

    Craft curing of modified isomonoolefin/para-alkylstyrene copolymers
    9.
    发明授权
    Craft curing of modified isomonoolefin/para-alkylstyrene copolymers 失效
    改性异单烯烃/对烷基苯乙烯共聚物的工艺固化

    公开(公告)号：US5567775A

    公开(公告)日：1996-10-22

    申请号：US469285

    申请日：1995-06-06

    申请人： Hsien C. Wang ,  Irwin J. Gardner ,  James V. Fusco

    发明人： Hsien C. Wang ,  Irwin J. Gardner ,  James V. Fusco

    IPC分类号： C08F290/12 ,  C08F8/00 ,  C08F290/04 ,  C08F255/10 ,  C08F257/02

    CPC分类号： C08F290/04 ,  C08F8/00

    摘要： This invention provides for curable and graft-cured polymer compositions prepared from a mixture comprising:a) an elastomeric copolymer containing from about 0.01 up to about 10 mole % of Y ester groups randomly distributed along and pendant to the elastomeric polymer chain, said Y ester groups having the structure: ##STR1## wherein R.sub.2 and R.sub.3 are independently selected from the group consisting of hydrogen and an alkyl group containing 1 to about 6 carbon atoms and R.sub.4 is selected from the group consisting of hydrogen, an alkyl group containing from 1 to about 28 carbon atoms, an aryl group and an alkenyl group containing from 2 to about 28 carbon atoms; andb) at least one free radically polymerizable monomer. The invention also provides for a process for preparing graft-cured polymer compositions comprising forming the above recited mixture of (a) and (b) and subjecting said mixture to free radical polymerization conditions. The Y ester groups pendant to the elastomeric polymer chain, e.g. benzylic(meth)acrylic acid ester groups present in isobutylene/para-methystyrene interpolymer chains, are capable of participating in free radical initiated reactions with monofunctional or polyfunctional free radically polymerizable monomers to produce graft-crosslinked compositions having an unusual balance of physical properties. These compositions may be formed into shaped articles such as films, coatings, adhesive layers and moldings and subjected to free radical polymerization conditions to produce crosslinked shaped articles.

    摘要翻译： 本发明提供了由混合物制备的可固化和接枝固化的聚合物组合物，其包含：a）含有约0.01至约10摩尔％的Y酯基的弹性体共聚物，其随机分布并垂直于弹性体聚合物链，所述Y酯 具有以下结构的基团：其中R 2和R 3独立地选自氢和含有1至约6个碳原子的烷基，R 4选自氢，含1至 约28个碳原子，芳基和含有2至约28个碳原子的烯基; 和b）至少一种可自由基聚合的单体。 本发明还提供了制备接枝固化的聚合物组合物的方法，包括形成上述（a）和（b）的混合物并使所述混合物经受自由基聚合条件。 Y酯基垂直于弹性体聚合物链，例如。 存在于异丁烯/对 - 甲基苯乙烯互聚物链中的苄基（甲基）丙烯酸酯基能够参与与单官能或多官能的可自由基聚合单体的自由基引发的反应，以产生具有不寻常的物理平衡平衡的接枝交联组合物。 这些组合物可以形成成型制品如薄膜，涂料，粘合剂层和模制品，并进行自由基聚合条件以制备交联成型制品。