Core-shell particles synthesized through controlled free radical polymerization
    1.
    发明申请
    Core-shell particles synthesized through controlled free radical polymerization 失效
    通过控制自由基聚合合成的核 - 壳颗粒

    公开(公告)号:US20060141150A1

    公开(公告)日:2006-06-29

    申请号:US11023868

    申请日:2004-12-27

    IPC分类号: B01J13/02

    摘要: The present invention discloses a process for producing a core-shell polymer that comprises: (1) preparing a monomer solution which is comprised of (a) at least one monomer, optional one crosslinking monomer (b) a conjugate acid of a surfactant with a pKa of less than 14, and (c) a controlled free radical polymerization agent; (2) preparing an aqueous medium which is comprised of (a) water, and (b) a conjugate base of a weak acid wherein the pKb of the base is less than 14; and (3) mixing the monomer solution with the aqueous medium under conditions that result in the in-situ formation of an emulsifier to produce a polymerization medium, and (4) initiating free radical polymerization within the polymerization medium to produce a core polymer, wherein the core contains a free radical control agents, (5) adding a second monomer to the polymerization medium containing the core polymer, and (6) allowing polymerization to proceed in the presence of the free radical control agent to produce the core-shell polymer.

    摘要翻译: 本发明公开了一种制备核 - 壳聚合物的方法,其包括:(1)制备单体溶液,该单体溶液由(a)至少一种单体,任选的一种交联单体(b)表面活性剂的共轭酸与 pKa小于14,(c)受控自由基聚合剂; (2)制备由(a)水和(b)弱酸的共轭碱组成的水性介质,其中碱的pKb小于14; 和(3)在导致乳化剂原位形成以产生聚合介质的条件下将单体溶液与水性介质混合,和(4)在聚合介质内引发自由基聚合以制备芯聚合物,其中 核心包含自由基控制剂,(5)在含有核聚合物的聚合介质中加入第二单体,和(6)在自由基控制剂的存在下使聚合进行以制备核 - 壳聚合物。

    Thermoplastic vulcanizate composition
    2.
    发明申请
    Thermoplastic vulcanizate composition 失效
    热塑性硫化胶组合物

    公开(公告)号:US20050245679A1

    公开(公告)日:2005-11-03

    申请号:US11106977

    申请日:2005-04-15

    摘要: A thermoplastic vulcanizate composition comprised of (a) thermoplastic resin selected from the group consisting of polyphenylene ether, polypropylene, polyethylene, and polystyrene, (b) at least one elastomer selected from the group consisting of butadiene-isoprene copolymer rubbers, copolymers of a conjugated diolefin monomer and an acrylate monomer, copolymers of a conjugated diolefin monomer and an methacrylate monomer, copolymers of a conjugated diolefin monomer and a vinyl aromatic monomer, copolymers of a conjugated diolefin monomer and an acrylonitrile monomer, blends of polyisoprene rubber with styrene-butadiene rubber, wherein the elastomer is at least partially crosslinked, wherein the repeat units in the elastomer are distributed throughout the elastomer in an essentially random manner, and (c) oil.

    摘要翻译: 一种热塑性硫化胶组合物,其包含(a)选自聚苯醚,聚丙烯,聚乙烯和聚苯乙烯的热塑性树脂,(b)至少一种选自丁二烯 - 异戊二烯共聚物橡胶的共聚物,共轭 二烯烃单体和丙烯酸酯单体,共轭二烯烃单体和甲基丙烯酸酯单体的共聚物,共轭二烯烃单体和乙烯基芳族单体的共聚物,共轭二烯烃单体和丙烯腈单体的共聚物,聚异戊二烯橡胶与苯乙烯 - 丁二烯橡胶的共混物 ,其中弹性体至少部分交联,其中弹性体中的重复单元以基本上随机的方式分布在整个弹性体中,和(c)油。