Process for producing polydiorganosiloxane based graft copolymers
    2.
    发明授权
    Process for producing polydiorganosiloxane based graft copolymers 失效
    聚二有机硅氧烷基接枝共聚物的制备方法

    公开(公告)号:US5629388A

    公开(公告)日:1997-05-13

    申请号:US397316

    申请日:1995-03-02

    CPC分类号: C08F290/148

    摘要: A process for producing a polydiorganosiloxane based graft copolymer is provided. The process involves producing an emulsion of crosslinked polydiorganosiloxane by admixing dihydroxyfunctional polydiorganosiloxane, an emulsifying agent, and water; polymerizing the polydiorganosiloxane in the presence of an acid catalyst, a cross linking agent and a grafting agent to form silicone rubber particles having functional sites, and graft polymerizing a vinyl functional monomer onto the resulting silicone particles. The process provides several advantages in a rubber particle size control thereby resulting in better control of the properties of the resulting graft copolymer.

    摘要翻译: 提供了一种生产聚二有机硅氧烷基接枝共聚物的方法。 该方法包括通过混合二羟基官能聚二有机硅氧烷,乳化剂和水来生产交联聚二有机硅氧烷的乳液; 在酸催化剂,交联剂和接枝剂的存在下聚合聚二有机硅氧烷以形成具有官能位点的硅橡胶颗粒,并将乙烯基官能单体接枝聚合到所得硅氧烷颗粒上。 该方法在橡胶粒度控制中提供若干优点,从而更好地控制所得接枝共聚物的性能。

    Agglomerating agent latex with bound poly(ethylene oxide)
    3.
    发明授权
    Agglomerating agent latex with bound poly(ethylene oxide) 失效
    具有结合聚(环氧乙烷)的聚集剂胶乳

    公开(公告)号:US5470895A

    公开(公告)日:1995-11-28

    申请号:US259314

    申请日:1994-06-13

    摘要: A process that is provided for agglomerating rubber particles of a rubbery latex. The process involves producing an agglomerating agent which is in the form of latex having particles which comprise high molecular weight polyoxyethylene bound therein. The agglomerating agent is affixed with an elastomeric latex to form agglomerated elastomeric particles. The process results in the formation of uniform size agglomerating particles, and utilizes a non-surfactant form of polyoxyethylene, which can be utilized in small amounts to yield the desired agglomerated elastomeric latex. The agglomerated particles may then be utilized as the substrate for graft copolymers, such as acrylonitrile-butadiene-styrene graft copolymers.

    摘要翻译: 提供用于使橡胶胶乳的橡胶颗粒聚集的方法。 该方法包括制备凝聚剂,其为胶乳形式,其中含有其中包含高分子量聚氧乙烯的颗粒。 附聚剂用弹性体胶乳固化以形成附聚的弹性体颗粒。 该方法导致形成均匀尺寸的附聚颗粒,并且使用非表面活性剂形式的聚氧乙烯,其可以少量使用以产生所需的附聚弹性体胶乳。 然后可以将附聚的颗粒用作接枝共聚物的基材,例如丙烯腈 - 丁二烯 - 苯乙烯接枝共聚物。