Conductive polymer composition and PTC element
    1.
    发明授权
    Conductive polymer composition and PTC element 失效
    导电聚合物组合物和PTC元件

    公开(公告)号:US06773634B2

    公开(公告)日:2004-08-10

    申请号:US10169252

    申请日:2002-06-28

    IPC分类号: H01B124

    摘要: A conductive polymer composition comprising 100 parts by weight of a crystalline polymer (A) and 5 to 150 parts by weight of a conductive powder (B) dispersed in the crystalline polymer (A) is disclosed. The crystalline polymer (A) shows crystal transition, thereby the conductive polymer composition exhibits PTC characteristics.

    摘要翻译: 公开了包含100重量份结晶聚合物(A)和5至150重量份分散在结晶聚合物(A)中的导电粉末(B)的导电聚合物组合物。 结晶聚合物(A)显示出晶体转变,因此导电聚合物组合物显示出PTC特性。

    Crystalline polymer exhibiting solid phase transition phenomenon and use thereof
    2.
    发明申请
    Crystalline polymer exhibiting solid phase transition phenomenon and use thereof 审中-公开
    显示固相变现象的结晶聚合物及其用途

    公开(公告)号:US20060155088A1

    公开(公告)日:2006-07-13

    申请号:US10563041

    申请日:2004-07-07

    IPC分类号: C08F136/00

    摘要: A crystalline polymer exhibiting crystal transition in the solid phase state, which satisfies the relationship defined by the formula 150>ΔHtr>1.6Ttr−3.5 (1) (wherein ΔHtr represents the endotherm (J/g) accompanying crystal transition and Ttr represents the crystal transition temperature (° C.)). This crystalline polymer has a weight average molecular weight of 600 thousand or less and a crystal transition temperature (Ttr) of 67° C. or below. Since this crystalline polymer has a low phase transition temperature, a high heat of a crystal transition, and a high melting point, the potential utility thereof as a switching element or a thermal storage material used at around normal environment temperatures (20 to 50° C.) is high.

    摘要翻译: 在固相状态下呈现晶体转变的结晶聚合物,其满足式150> DeltaHtr> 1.6Ttr-3.5(1)所定义的关系(其中ΔHtr表示伴随晶体转变的吸热(J / g),Ttr表示晶体 转变温度(℃))。 该结晶聚合物的重均分子量为60万以下,结晶转变温度(Ttr)为67℃以下。 由于该结晶聚合物具有低的相变温度,高的结晶转变热和高熔点,因此作为在正常环境温度(20〜50℃)附近使用的开关元件或储热材料的潜在用途 。) 高。

    METHOD AND APPARATUS FOR PRODUCING POLYMER PARTICLES
    3.
    发明申请
    METHOD AND APPARATUS FOR PRODUCING POLYMER PARTICLES 审中-公开
    生产聚合物颗粒的方法和装置

    公开(公告)号:US20110263730A1

    公开(公告)日:2011-10-27

    申请号:US13124221

    申请日:2009-09-28

    摘要: Provided are: a manufacturing method for polymer particles, including: mixing a polymer solution, which is obtained by dissolving a polymer in a good solvent, and a polymer non-solvent, which is a non-solvent for the polymer and has compatibility with the good solvent, in a continuous or intermittent manner; and allowing a mixed solution of the polymer solution and the polymer non-solvent to flow down through a tubular body provided substantially vertically, thereby completing the precipitation of polymer particles; and a manufacturing apparatus for polymer particles. The manufacturing method enables the manufacture of polymer particles which have a relatively narrow particle diameter distribution even when the polymer particles are kept in a dispersion solution state.

    摘要翻译: 提供:聚合物颗粒的制造方法,包括:将通过将聚合物溶解在良溶剂中而获得的聚合物溶液和作为聚合物的非溶剂的聚合物非溶剂混合并与 良好的溶剂,以连续或间歇的方式; 并且使聚合物溶液和聚合物非溶剂的混合溶液向下流过基本上垂直设置的管状体,从而完成聚合物颗粒的沉淀; 和聚合物颗粒的制造装置。 即使当聚合物颗粒保持分散溶液状态时,制造方法也能够制造具有相对窄的粒径分布的聚合物颗粒。

    METHOD FOR PURIFYING POROUS POLYAMIDE FINE POWDER
    4.
    发明申请
    METHOD FOR PURIFYING POROUS POLYAMIDE FINE POWDER 审中-公开
    多孔聚四氟乙烯粉末纯化方法

    公开(公告)号:US20090061227A1

    公开(公告)日:2009-03-05

    申请号:US11911437

    申请日:2005-04-15

    IPC分类号: B32B5/16 C08G73/10

    摘要: A porous polyamide fine powder having been prepared by bringing a non-solvent B for the polyamide into contact with a polyamide solution in which a polyamide is dissolved in a solvent a and containing a remaining solvent A is treated with a poor solvent C which is compatible with the solvent A at least at a temperature of 40° C. or higher at a temperature of 40° C. or higher, whereby the solvent A is extracted out of the porous polyamide fine powder.

    摘要翻译: 通过使聚酰胺中的非溶剂B与其中聚酰胺溶解在溶剂a中并含有剩余溶剂A的聚酰胺溶液接触而制备的多孔聚酰胺细粉末用不兼容的溶剂C 溶剂A在40℃以上的温度下,至少在40℃以上的温度下进行,从多孔聚酰胺细粉中提取出溶剂A.