Stabilized slurries of isoolefin polymers
    4.
    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

    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。

    Stabilized slurries of isoolefin polymers
    9.
    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:US4358560A

    公开(公告)日:1982-11-09

    申请号:US236719

    申请日:1981-02-23

    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 (i) a preformed copolymer stabilizer having both a lyophobic or lyophilic portion, or (ii) an in situ formed stabilizer from a functional lyophilic stabilizer precursor capable of copolymerizing or otherwise chemically bonding with the polymer product. 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(i)具有疏液或亲液部分的预制共聚物稳定剂或聚 (ii)能够与聚合物产物共聚或以其它方式化学键合的功能性亲液稳定剂前体的原位形成的稳定剂。 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。