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9 条记录 (耗时 0.013 秒)

    Coated particles and conductive compositions therefrom
    1.
    发明授权
    Coated particles and conductive compositions therefrom 失效
    涂覆颗粒和导电组合物

    公开(公告)号：US4051075A

    公开(公告)日：1977-09-27

    申请号：US654990

    申请日：1976-02-03

    申请人： Robert Smith-Johannsen ,  Wendell W. Moyer, Jr.

    发明人： Robert Smith-Johannsen ,  Wendell W. Moyer, Jr.

    IPC分类号： B01J2/00 ,  C09D5/24 ,  H01B1/24 ,  H01B1/00

    CPC分类号： C09D5/24 ,  B01J2/006 ,  H01B1/24

    摘要： Disclosed is a process of coating discrete, unagglomerated particles of less than 20 microns with a high polymer coating, and compositions such as conductive compositions using such coated particles. The particles are coated with the polymer in a fluid energy mill such that substantially uniform coated particles are obtained which are free-flowing, non-agglomerative and readily dispersable in a suitable binder.

    摘要翻译： 公开了一种使用高聚合物涂层涂布小于20微米的离散的未凝聚颗粒的方法，以及使用这种涂覆颗粒的组合物如导电组合物。 颗粒在流体能量研磨机中用聚合物涂覆，使得获得基本上均匀的涂覆颗粒，其是自由流动的，非聚集的并且易于分散在合适的粘合剂中。

    Thermochromic composition
    2.
    发明授权
    Thermochromic composition 失效
    热变色组合物

    公开(公告)号：US4743398A

    公开(公告)日：1988-05-10

    申请号：US855026

    申请日：1986-04-22

    申请人： Andrew V. Brown ,  Wendell W. Moyer

    发明人： Andrew V. Brown ,  Wendell W. Moyer

    IPC分类号： B41M5/28 ,  G01K11/16 ,  C09K3/00 ,  C09D5/08

    CPC分类号： G01K11/16 ,  B41M5/284 ,  Y10S252/962

    摘要： A temperature indicating composition is provided for use on recoverable articles so that heating to produce recovery or to activate a heat-activatable sealant can be monitored. The composition comprises a thermochromic colorant in a binder and an activator that causes the thermochromic colorant to change color at a temperature lower than the temperature at which the colorant would change temperature in the absence of the activator. The thermochromic colorant can be folic acid and the activator can be an acid that has a pK of less than 4.2.

    摘要翻译： 提供温度指示组合物用于可回收制品，从而可以监测加热以产生回收或活化可热激活的密封剂。 该组合物包含粘合剂中的热变色着色剂和活化剂，其使热变色着色剂在低于着色剂在不存在活化剂的情况下改变温度的温度的温度下变色。 热变色着色剂可以是叶酸，活化剂可以是pK小于4.2的酸。

    Conductive polymer compositions, and to devices comprising such compositions
    3.
    发明授权
    Conductive polymer compositions, and to devices comprising such compositions 失效
    导电聚合物组合物，以及包含这种组合物的装置

    公开(公告)号：US4388607A

    公开(公告)日：1983-06-14

    申请号：US85679

    申请日：1979-10-17

    申请人： Lester T. Toy ,  Wendell W. Moyer ,  Bernard J. Lyons ,  David A. Horsma

    发明人： Lester T. Toy ,  Wendell W. Moyer ,  Bernard J. Lyons ,  David A. Horsma

    IPC分类号： H01B1/24 ,  H01C7/02 ,  H01B1/04 ,  H01C7/13

    CPC分类号： H01C7/027 ,  H01B1/24

    摘要： Conductive polymer compositions which have improved voltage stability and which preferably exhibit PTC behavior. The compositions comprise a carbon black dispersed in a crystalline copolymer of an olefin and at least 10% by weight of an olefinically unsaturated comonomer containing a polar group. The carbon black has a particle size greater than 18 millimicrons, preferably greater than 30 millimicrons, a d-spacing greater than 360 and a surface area which is less than1.2S+e.sup.S/50where S is the DBP absorption of the carbon black. The carbon black is preferably present in amount at least 15% by weight of the composition. Particularly useful devices including such compositions are self-regulating heaters.

    摘要翻译： 导电聚合物组合物具有改进的电压稳定性并且优选表现出PTC行为。 组合物包含分散在烯烃和至少10重量％的含有极性基团的烯属不饱和共聚单体的结晶共聚物中的炭黑。 炭黑的粒度大于18毫微子，优选大于30毫微子，d间距大于360，表面积小于1.2S + eS / 50，其中S是炭黑的DBP吸收。 炭黑优选以组合物的至少15重量％的量存在。 包括这种组合物的特别有用的装置是自调节加热器。

    PTC Compositions and devices comprising them
    5.
    发明授权
    PTC Compositions and devices comprising them 失效
    PTC组合物和包含它们的装置

    公开(公告)号：US4534889A

    公开(公告)日：1985-08-13

    申请号：US468768

    申请日：1983-02-22

    申请人： Peter H. van Konynenburg ,  Bernard J. Lyons ,  Robert Smith-Johannsen ,  Wendell W. Moyer

    发明人： Peter H. van Konynenburg ,  Bernard J. Lyons ,  Robert Smith-Johannsen ,  Wendell W. Moyer

    IPC分类号： C08K3/04 ,  H01B1/20 ,  H01B1/24 ,  H01C7/02 ,  H05B3/14 ,  H01B1/06

    CPC分类号： H01B1/24 ,  C08K3/04 ,  H01B1/20 ,  H01C7/027 ,  H05B3/146

    摘要： Novel conductive polymer compositions which exhibit useful PTC behavior are produced by cross-linking processes. By correlating the polymer, the conductive filler dispersed therein, and the cross-linking conditions, PTC compositions having desired resistance/temperature characteristics can be prepared. In particular the cross-linking can be carried out so as to provide compositions having a switching temperature around the cross-linking temperature. The invention is applicable to both elastomeric and thermoplastic polymers, and provides for the first time a method of making PTC compositions exhibiting useful PTC behavior from elastomers.

    摘要翻译： 通过交联方法产生显示有用的PTC行为的新型导电聚合物组合物。 通过使聚合物，其中分散的导电填料和交联条件相关联，可以制备具有所需电阻/温度特性的PTC组合物。 特别地，可以进行交联以便提供围绕交联温度的开关温度的组合物。 本发明可应用于弹性体和热塑性聚合物，并且首次提供了一种制备从弹性体表现出有用的PTC行为的PTC组合物的方法。

    Expansive cement and agent therefor
    6.
    发明授权
    Expansive cement and agent therefor 失效
    膨胀水泥及其代理商

    公开(公告)号：US4205994A

    公开(公告)日：1980-06-03

    申请号：US942790

    申请日：1978-09-15

    申请人： Wendell W. Moyer, Jr. ,  Robert Smith-Johannsen

    发明人： Wendell W. Moyer, Jr. ,  Robert Smith-Johannsen

    IPC分类号： C04B22/06 ,  C04B7/02

    CPC分类号： C04B22/064

    摘要： Expansive cement compositions and novel expansion agents containing free lime for use in such compositions. The expansion agents are prepared by heating lime of particle size less than 250 microns in an atmosphere comprising water vapor at 100.degree. to 400.degree. C. or carbon dioxide at 350.degree. to 850.degree. C., or by heating a partially hydrated lime at a temperature of at least 100.degree. C. The encapsulated limes produced in this way are useful as expansion agents in hydratable cement compositions, the amount thereof generally being less than 30%, preferably 3 to 10%, based on the weight of the cement and additive. Cement compositions containing the novel expansion agents are useful in a wide variety of uses where shrinkage of the composition on drying has to be prevented or reduced.

    摘要翻译： 膨胀水泥组合物和含有游离石灰的新型膨胀剂用于这种组合物中。 膨胀剂的制备方法是在100℃〜400℃的水蒸汽气氛中加热粒径小于250微米的石灰，或在350〜850℃下加热二氧化碳，或者加热部分熟化的石灰 温度至少为100℃。以这种方式生产的包封石灰可用作可水合水泥组合物中的膨胀剂，其用量一般小于30％，优选3至10％，以水泥和添加剂的重量为基准 。 含有新型膨胀剂的水泥组合物可用于各种用途，其中必须防止或降低干燥时组合物的收缩。