PROCESS OF MICROGEL SYNTHESIS AND PRODUCTS PRODUCED THEREFROM
    42.
    发明申请
    PROCESS OF MICROGEL SYNTHESIS AND PRODUCTS PRODUCED THEREFROM 有权
    微胶囊合成方法及其制备的产品

    公开(公告)号:US20060142404A1

    公开(公告)日:2006-06-29

    申请号:US10257991

    申请日:2001-04-06

    IPC分类号: B29C44/34

    摘要: The invention provides in one aspect a process for preparing a microgel by RAFT polymerizing in the presence of a RAFT chain transfer agent, one or more solvophobic monomers and one or more solvophilic monomers to form one or more block copolymers comprising one or more solvophobic blocks and one or more solvophilic blocks wherein the solvophobic block is insoluble in a dispersing medium and the solvophilic block is soluble in the dispersing medium. The block copolymer is dispersed in the dispersing medium to form micelles, which is then stabilized to form the microgel. The dispersing medium can be aqueous or lipophilic. The method of the present invention also permits one to encapsulate a wide variety of materials, such as pigments, dye molecules, and aluminum flakes used in metallized paints.

    摘要翻译: 本发明在一个方面提供了一种通过RAFT聚合制备微凝胶的方法,其在RAFT链转移剂,一种或多种疏水单体和一种或多种溶剂亲油性单体的存在下聚合以形成一种或多种包含一种或多种疏乳嵌段的嵌段共聚物和 一种或多种溶剂亲和性嵌段,其中所述疏水性嵌段不溶于分散介质,并且所述溶剂性嵌段可溶于所述分散介质中。 将嵌段共聚物分散在分散介质中以形成胶束,然后将其稳定化以形成微凝胶。 分散介质可以是水性或亲油性的。 本发明的方法还允许包封各种材料,例如用于金属化涂料中的颜料,染料分子和铝薄片。

    Catalytic polymerization process
    43.
    发明授权
    Catalytic polymerization process 有权
    催化聚合工艺

    公开(公告)号:US06624261B1

    公开(公告)日:2003-09-23

    申请号:US09125467

    申请日:1998-08-19

    IPC分类号: C08F200

    摘要: This invention relates to a process for controlling the architecture of copolymers of at least two unsaturated monomers, made by free-radical polymerization in the presence of a cobalt-containing chain transfer agent, including the control of molecular weight, degree of branching and vinyl end group termination, by varying at least one of the variables of molar ratio of monomers, their relative chain transfer constants, polymerization temperature and degree of conversion and amount of cobalt chain transfer agent; and polymers made thereby.

    摘要翻译: 本发明涉及在含钴链转移剂存在下,通过自由基聚合制备的至少两种不饱和单体的共聚物结构的方法,包括分子量,支化度和乙烯基端基的控制 通过改变单体摩尔比的变量,它们的相对链转移常数,聚合温度和转化度和钴链转移剂量的至少一个变量来进行组终止; 和由此制成的聚合物。

    Starch Nanocomposite Materials
    47.
    发明申请
    Starch Nanocomposite Materials 有权
    淀粉纳米复合材料

    公开(公告)号:US20100307951A1

    公开(公告)日:2010-12-09

    申请号:US12602257

    申请日:2008-06-02

    IPC分类号: B65D65/38 C08K3/34

    摘要: In one aspect, the invention provides a substantially exfoliated nanocomposite material including starch and hydrophobically modified layered silicate clay. In another aspect, the invention provides packaging made from material including the substantially exfoliated nanocomposite material described above. The nanocomposite material has improved mechanical and rheological properties and reduced sensitivity to moisture in that the rates of moisture update and/or loss are reduced. In another aspect, the invention provides a process for preparing the substantially exfoliated nanocomposite material described above, including a step of mixing the starch in the form of an aqueous gel with the hydrophobic clay in a melt mixing device. In a further aspect, the invention provides a process for preparing the substantially exfoliated nanocomposite material, including the steps of mixing the starch with the hydrophobic clay to form a masterbatch (hereinafter “the masterbatch process”) and mixing the masterbatch with further starch.

    摘要翻译: 一方面,本发明提供了包括淀粉和疏水改性的层状硅酸盐粘土的基本上剥离的纳米复合材料。 另一方面,本发明提供由包括上述基本上剥离的纳米复合材料的材料制成的包装。 纳米复合材料具有改善的机械和流变性能并降低对水分的敏感性,因为减少了水分更新和/或损失的速率。 另一方面,本发明提供了一种制备上述基本上剥离的纳米复合材料的方法,包括在熔融混合装置中将水性凝胶形式的淀粉与疏水性粘土混合的步骤。 在另一方面,本发明提供了制备基本上脱落的纳米复合材料的方法,包括将淀粉与疏水性粘土混合以形成母料(以下称为“母料工艺”)并将母料与另外的淀粉混合的步骤。