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    Aliphatic, low-emission thermoplastic polyurethane molding materials suitable for sintering
    4.
    发明授权
    Aliphatic, low-emission thermoplastic polyurethane molding materials suitable for sintering 失效
    脂肪，低排放热塑性聚氨酯成型材料适用于烧结

    公开(公告)号：US06420510B1

    公开(公告)日：2002-07-16

    申请号：US09581771

    申请日：2000-06-16

    申请人： Wolfgang Kaufhold ,  Hans-Georg Hoppe ,  Herbert Heidingsfeld ,  Rainer Ohlinger ,  Michael Kalbe

    发明人： Wolfgang Kaufhold ,  Hans-Georg Hoppe ,  Herbert Heidingsfeld ,  Rainer Ohlinger ,  Michael Kalbe

    IPC分类号： C08G1842

    CPC分类号： C08G18/0895 ,  C08G18/4277 ,  C08G18/44 ,  C08G18/664 ,  C08G2140/00

    摘要： Polyurethane moulding compositions which can be melt processed in the form of sintering powders suitable for the preparation of grained sintered films and which are prepared exclusively from linear aliphatic components are described. The polyol component is composed of 30 to 80 parts by weight of an aliphatic polycarbonate diol with an average molecular weight {overscore (M)}n of 1000 to 2200 and 70 to 20 parts by weight of a polybutane diol adipate and/or a polycaprolactone diol with an average molecular weight {overscore (M)}n of 1000 to 2400. Moreover, the mixture contains 1,6-hexamethylene diisocyanate in an equivalence ratio of 2.3:1.0 to 6.2:1.0, based on the polyol mixture and butane-1,4-diol as chain extender, the equivalence ratio of the butane-1,4-diol based on the poly mixture being 1.3:1.0 to 5.2:1.0.

    摘要翻译： 描述了可以熔融加工形式的聚氨酯模塑组合物，其以适于制备颗粒烧结薄膜的烧结粉末形式，并且仅由线性脂族组分制备。 多元醇组分由30至80重量份的平均分子量（超核（M）} n为1000至2200的脂族聚碳酸酯二醇和70至20重量份的己二酸聚丁二醇酯和/或聚己内酯 二醇，其平均分子量（超芯（M））n为1000〜2400。此外，基于多元醇混合物和丁烷 - 二异氰酸酯，混合物含有当量比为2.3:1.0至6.2:1.0的1,6-六亚甲基二异氰酸酯， 作为扩链剂的1,4-二醇，基于聚合物的丁烷-1,4-二醇的当量比为1.3:1.0至5.2:1.0。

    Aliphatic thermoplastic polyurethanes, a process for producing them and the use thereof
    7.
    发明授权
    Aliphatic thermoplastic polyurethanes, a process for producing them and the use thereof 有权
    脂肪族热塑性聚氨酯，其制造方法及其用途

    公开(公告)号：US06559266B2

    公开(公告)日：2003-05-06

    申请号：US09447025

    申请日：1999-11-22

    申请人： Wolfgang Kaufhold ,  Wolfgang Braeuer ,  Hans-Georg Wussow ,  Hans-Georg Hoppe ,  Steven C. Manning

    发明人： Wolfgang Kaufhold ,  Wolfgang Braeuer ,  Hans-Georg Wussow ,  Hans-Georg Hoppe ,  Steven C. Manning

    IPC分类号： C08G1842

    CPC分类号： C08G18/73 ,  C08G18/6607 ,  C08G18/758

    摘要： A molding composition comprising thermoplastic polyurethane is disclosed. The polyurethane is characterized in having ultimate tensile strength (UTS) and elongation at break (EAB) values after hot storage which are, each, at least 60% of the corresponding value before hot storage, glass transition temperature equal to or lower than −50° C., UTS and EAB values after hydrolytic storage which are, each, at least 80% of the corresponding value before hydrolytic storage, and Shore A hardness of 70 to 95. The polyurethane is a product of a reaction comprising an aliphatic diisocyanate, a mixture of polyols and a chain extender and contains a UV stabilizer, an antioxidant and an optional anti-hydrolysis agent.

    摘要翻译： 公开了一种包含热塑性聚氨酯的模制组合物。 聚氨酯的特征在于在热存储之后具有极限拉伸强度（UTS）和断裂伸长率（EAB）值，它们各自在热存储之前的相应值的至少60％，玻璃化转变温度等于或低于-50 水解储存后的UTS和EAB值各自为水解储存前相应值的至少80％，肖氏A硬度为70至95.聚氨酯是包含脂族二异氰酸酯， 多元醇和扩链剂的混合物，并含有UV稳定剂，抗氧化剂和任选的抗水解剂。

    Circuit for damping hunting by electric machines
    9.
    发明授权
    Circuit for damping hunting by electric machines 失效
    电机阻尼狩猎电路

    公开(公告)号：US4393345A

    公开(公告)日：1983-07-12

    申请号：US199685

    申请日：1980-10-22

    申请人： Kurt Fork ,  Wolfgang Kaufhold ,  Wolfgang Meusel ,  Hermann Waldmann

    发明人： Kurt Fork ,  Wolfgang Kaufhold ,  Wolfgang Meusel ,  Hermann Waldmann

    IPC分类号： H02P9/14 ,  H02P9/10 ,  H02H7/06 ,  H02P9/00

    CPC分类号： H02P9/10 ,  Y10S505/851

    摘要： A circuit for damping hunting oscillations of controlled electric machines. The circuit is provided with a measuring circuit for determining the hunting oscillations and an identifier circuit for determining the angle components of such hunting oscillations. A phase shifter circuit is provided for receiving the angle components produced by the identifier circuit and forming a hunting oscillation correction signal which is shifted in phase from the hunting oscillations by a predetermined phase angle. The hunting oscillation correction signal is conducted to a control unit of the electric machine. The invention is particularly useful in damping hunting by the rotors of voltage controlled synchronous generators.

    摘要翻译： 用于阻尼受控电机摆动振荡的电路。 该电路设置有用于确定捕获振荡的测量电路和用于确定这种振荡的角度分量的识别器电路。 提供了一种移相器电路，用于接收由识别电路产生的角度分量，并形成一个摆动振荡校正信号，该振荡校正信号相对于摆动振荡相移预定的相位角。 将振荡校正信号传送到电机的控制单元。 本发明特别适用于由电压控制的同步发电机的转子阻尼摆动。

    Circuit arrangement for attenuation of power oscillations in networks
    10.
    发明授权
    Circuit arrangement for attenuation of power oscillations in networks 失效
    网络中功率振荡衰减的电路布置

    公开(公告)号：US4292580A

    公开(公告)日：1981-09-29

    申请号：US98896

    申请日：1979-11-30

    申请人： Gunther Ott ,  Wolfgang Kaufhold

    发明人： Gunther Ott ,  Wolfgang Kaufhold

    IPC分类号： H02J3/24 ,  H02P9/10 ,  H02P9/14 ,  G05F5/00

    CPC分类号： H02P9/10 ,  H02J3/24

    摘要： A circuit arrangement, for deriving, from sensed power variations in a network, a signal for supplying the exciter of at least one synchronous machine coupled to the network, includes first and second vector identifiers, each providing a direct and phase-shifted output with each of the outputs coupled through an impedance matching amplifier to a summing junction. The direct signal from the first vector identifier and phase-shifted signal from the second vector identifier are conducted to one summing junction and the phase-shifted output of the first vector identifier and direct output of the second vector identifier to a second summing junction, with the outputs of the two summing junctions summed at a further summing junction after being coupled through additional impedance matching amplifiers to result in a total signal at the output of the third summing junction which varies in a mathematically positive sense with increasing oscillation frequency.

    摘要翻译： 用于从网络中的感测功率变化导出用于提供耦合到网络的至少一个同步机器的激励器的信号的电路装置包括第一和第二矢量标识符，每个向量标识符提供每一个的直接和相移输出 通过阻抗匹配放大器耦合到加法结的输出。 来自第一矢量标识符和来自第二矢量标识符的相移信号的直接信号被传导到一个求和结点和第一矢量标识符的相移输出以及第二矢量标识符的直接输出到第二求和结点， 在通过附加阻抗匹配放大器耦合之后，两个求和点的输出在另一求和点处相加，以在第三求和结的输出处产生总信号，其以数学上正的意义随振荡频率的增加而变化。