公开(公告)号：US4246158A

公开(公告)日：1981-01-20

申请号：US33996

申请日：1979-04-27

申请人： Walter Popp ,  Johannes Sedivy

发明人： Walter Popp ,  Johannes Sedivy

IPC分类号： C08K3/22 ,  C08K5/521 ,  C08K5/49

CPC分类号： C08K3/2279 ,  C08K5/521

摘要： Soft or plasticized polyvinyl chloride compositions with good chemical, mechanical and electrical properties characterized by their fire-retardant and flame-resistant properties comprising polyvinyl chloride with a content of a triphosphate plasticizer, aluminum hydroxide and antimony trioxide compounds. The compositions are particularly suitable for use in electrical conductors as sheathings and/or insulation.

摘要翻译： 具有良好化学，机械和电学性质的软或塑化的聚氯乙烯组合物，其特征在于它们的阻燃和阻燃性能，其包括含三磷酸盐增塑剂，氢氧化铝和三氧化锑化合物的聚氯乙烯。 所述组合物特别适用于电导体作为护套和/或绝缘体。

公开(公告)号：US5200703A

公开(公告)日：1993-04-06

申请号：US764349

申请日：1991-09-23

申请人： Walter Popp ,  Karl-Ulrich Erlenkamp ,  Peter Feld ,  Norbert Rietsch ,  Markus Vester

发明人： Walter Popp ,  Karl-Ulrich Erlenkamp ,  Peter Feld ,  Norbert Rietsch ,  Markus Vester

IPC分类号： A61B5/055 ,  G01R33/38 ,  G01R33/381 ,  G01R33/385 ,  G01R33/422 ,  H03H7/01 ,  H04B15/02

CPC分类号： H03H7/1758 ,  G01R33/385 ,  G01R33/422 ,  H03H7/0115 ,  H03H7/1733 ,  H03H7/1766 ,  H03H7/1775 ,  H04B15/02 ,  H03H2001/0085

摘要： An anti-interference filter for radio-shielding a feeder to a gradient coil in a nuclear magnetic resonance imaging apparatus is constructed as a band elimination (band rejection) filter for the operating frequency of the nuclear magnetic resonance imaging apparatus. The anti-interference filter can be in the form of a directionally symmetrical quadrupole having two input terminals and two output terminals. A first input terminal and a first output terminal are introducible into the feeder to the gradient coil, and a second input terminal and a second output terminal are connected to a conductor at reference potential. A number of blocking circuits are arranged in series between the first input terminal and the first output terminal. A number acceptor circuits are arranged between the input terminals, between the junctions of the blocking circuits and the reference potential conductor, and between the output terminals. The number of acceptor circuits is one more than the number of blocking circuits.

摘要翻译： 用于对核磁共振成像设备中的梯形线圈进给器进行放射线屏蔽的抗干扰滤波器被构造为用于核磁共振成像设备的工作频率的带除（带阻）滤波器。 抗干扰滤波器可以是具有两个输入端和两个输出端的定向对称四极的形式。 第一输入端子和第一输出端子被引入到馈电器中到梯形线圈，并且第二输入端子和第二输出端子连接到参考电位的导体。 多个阻塞电路串联布置在第一输入端和第一输出端之间。 在输入端子之间，阻塞电路的接点和参考电位导体之间以及输出端子之间布置有数个受电子电路。 受体电路的数量比阻塞电路的数量多一个。

公开(公告)号：US4714887A

公开(公告)日：1987-12-22

申请号：US849404

申请日：1986-04-08

申请人： Ralph Meissner ,  Walter Popp

发明人： Ralph Meissner ,  Walter Popp

IPC分类号： G01R33/32 ,  A61B5/055 ,  A61B10/00 ,  G01R33/34 ,  G01R33/341 ,  G01R33/20

CPC分类号： G01R33/341

摘要： A tomography apparatus utilizing nuclear magnetic resonance techniques for representing internal cross-sections of an examination subject has a surface coil for acquiring a signal corresponding to the displacement of the nuclear spins of the examination subject from a equilibrium position. The surface coil is annular and has its ends connected to ground through respective capacitances. A tape-shaped high-frequency shielding at least partially surrounds the surface coil.

摘要翻译： 利用用于表示检查对象的内部横截面的核磁共振技术的断层摄影装置具有用于从平衡位置获取对应于检查对象的核自旋的位移的信号的表面线圈。 表面线圈是环形的，其端部通过相应的电容连接到地面。 带状高频屏蔽至少部分地围绕表面线圈。

公开(公告)号：US4088625A

公开(公告)日：1978-05-09

申请号：US716106

申请日：1976-08-20

申请人： Erwin Gubisch ,  Walter Kudlich ,  Walter Popp ,  Herbert Reinicke

发明人： Erwin Gubisch ,  Walter Kudlich ,  Walter Popp ,  Herbert Reinicke

IPC分类号： C08L27/00 ,  C08J3/00 ,  C08J3/12 ,  C08K7/16 ,  C08L1/00 ,  C08L23/00 ,  C08L23/08 ,  C08L27/06 ,  C08L31/04 ,  C08L57/00 ,  C08L101/00

CPC分类号： C08L23/08 ,  C08J3/005 ,  C08J3/12 ,  C08J3/122 ,  C08L27/06 ,  C08L31/04 ,  C08J2323/08 ,  Y10S526/92 ,  Y10S526/922

摘要： A process for the production of a pulverulent, tricklable mixture of ethylene/vinyl acetate copolymer and polyvinylchloride comprising the steps of mixing a mixture consisting essentially of (a) an ethylene/vinyl acetate copolymer having an acetate content of from 15% to 75% by weight, (b) powdery polyvinylchloride, in a mixture ratio of (a) to (b) of 1:3 to 2:1, and (c) from 0 to 5% by weight of the mixture of additives customary for polymer processing, in a high-speed mixture at temperatures above the softening temperature of said polyvinylchloride and below 170.degree. C., for a time sufficient to effect homogenization, quenching said homogenized mixture with water and removing the water, grinding the quenched product with the addition of from 0.5 to 10 parts by weight of an inert powder having particles in the submicroscopic range, in a high speed mill under passage of an airstream which is heated by friction, and recovering said pulverulent, tricklable mixture; as well as the powdery mixture so produced.

摘要翻译： 一种制备乙烯/乙酸乙烯酯共聚物和聚氯乙烯的粉状，可混合的混合物的方法，包括以下步骤：将主要由（a）乙酸酯含量为15％至75％的乙烯/乙酸乙烯酯共聚物组成的混合物混合， 重量，（b）粉末状聚氯乙烯，（a） - （b）的混合比例为1:3至2:1，和（c）0-5重量％的常规用于聚合物加工的添加剂混合物， 在高于所述聚氯乙烯的软化温度和低于170℃的温度的高速混合物中，足以实现均化的时间，用水淬灭所述均质混合物并除去水，研磨骤冷产物，加入 0.5〜10重量份在亚微观范围内具有颗粒的惰性粉末，在通过摩擦加热的气流通过的高速磨机中，并回收所述粉状的可混合混合物; 以及如此生产的粉末混合物。