公开(公告)号：US4177111A

公开(公告)日：1979-12-04

申请号：US809494

申请日：1977-06-23

申请人： Christian Pieper ,  Surinder S. Sandhu ,  Gunter Schummer ,  Karlheinz Feltgen

发明人： Christian Pieper ,  Surinder S. Sandhu ,  Gunter Schummer ,  Karlheinz Feltgen

IPC分类号： D01F13/04 ,  B01D3/00 ,  C07C99/12 ,  C07C103/36

CPC分类号： D01F13/04 ,  Y02P70/629 ,  Y10S203/09

摘要： The recovery of dimethylacylamides from solutions which are formed during the production of fibres is particularly economical if the solution is concentrated in a separating column to produce a sump product having a DMA content of 30 to 90% at pressures of more than 300 Torr, using the evaporation heat of the head product for heating the column, with the aid of a compressor and then separating the sump product which is concentrated in DMA by distillation.

摘要翻译： 在纤维生产过程中形成的溶液中二甲基酰胺的回收是特别经济的，如果将溶液浓缩在分离塔中，以产生在大于300托的压力下DMA含量为30至90％的贮槽产品，则使用 借助于压缩机，然后通过蒸馏分离浓缩在DMA中的贮槽产物，用于加热柱的头部产品的蒸发热。

公开(公告)号：US4124666A

公开(公告)日：1978-11-07

申请号：US811314

申请日：1977-06-29

申请人： Gerd Wilhelm ,  Artur Jaschke ,  Hans-Jurgen Simon ,  Jens Schmidt ,  Surinder S. Sandhu

发明人： Gerd Wilhelm ,  Artur Jaschke ,  Hans-Jurgen Simon ,  Jens Schmidt ,  Surinder S. Sandhu

IPC分类号： B29C48/345 ,  B29C48/50 ,  D01D4/04 ,  D01D1/10

CPC分类号： B29C47/0883 ,  B29C47/30 ,  B29C47/58 ,  D01D4/04 ,  B29C47/0014

摘要： The invention relates to a method of keeping nozzle bodies or breaker plates clean during extrusion of polymer which can be shaped from the melt which comprises preventing the formation of deposits near the nozzle orifices by gassing these orifices at the point of extrusion of the melt, said gas consisting entirely or partly of vapors of substances which have a depolymerizing action on the deposits formed from the melt at the edge of the nozzle orifice.

摘要翻译： 本发明涉及一种在挤出聚合物的过程中保持喷嘴体或破碎板清洁的方法，该方法可以由熔体成形，该方法包括通过在熔体的挤压点处气化这些孔，防止在喷嘴孔附近形成沉积物 气体完全或部分地由对喷嘴孔边缘处的熔体形成的沉积物具有解聚作用的物质的蒸气组成。

公开(公告)号：US06572265B1

公开(公告)日：2003-06-03

申请号：US09839857

申请日：2001-04-20

申请人： John P. Gotthold ,  Anh N. Hoang ,  Surinder S. Sandhu ,  John Leonard Shaver ,  Terry M. Stapleton

发明人： John P. Gotthold ,  Anh N. Hoang ,  Surinder S. Sandhu ,  John Leonard Shaver ,  Terry M. Stapleton

IPC分类号： G01J508

CPC分类号： G01J5/02 ,  G01J1/28 ,  G01J1/58 ,  G01J5/0003 ,  G01J5/0007 ,  G01J5/0205 ,  G01J5/025 ,  G01J5/046 ,  G01J5/08 ,  G01J5/0821 ,  G01J5/084 ,  G01J5/0887 ,  G01K1/14 ,  G01K11/3213

摘要： A temperature sensor utilizing optical temperature measuring techniques is constructed to make firm contact with a surface whose temperature is being measured, an example application being the monitoring of semiconductor wafers or flat panel displays while being processed. A cap is mounted near but spaced apart from an end of a lightwave guide, with a resilient element that applies force of the cap against a surface whose temperature is being measured as the cap is urged toward the optical fiber end. An optical temperature sensing element, such as luminescent material or a surface of known emissivity, is carried within the cap. A bellows with a closed end conveniently serves as both the cap and the resilient element. An alternative temperature measuring device installs an optical temperature sensing material within a test substrate behind an optical window, and then views the sensing material through the window.

摘要翻译： 利用光学温度测量技术的温度传感器被构造成与正在测量温度的表面牢固接触，示例应用是在处理时监视半导体晶片或平板显示器。 盖子安装在光波导管的端部附近但与光波导的端部间隔开，弹性元件将帽的力抵抗温度被测量的表面，当盖被朝向光纤端被推压时。 光学温度感测元件，例如发光材料或已知辐射率的表面，被承载在盖内。 具有封闭端的波纹管方便地用作盖和弹性元件。 替代的温度测量装置将光学温度感测材料安装在光学窗口后面的测试基板内，然后通过窗口观察感测材料。

公开(公告)号：US4421708A

公开(公告)日：1983-12-20

申请号：US345845

申请日：1982-02-04

申请人： Manfred Reichardt ,  Christian Pieper ,  Alfred Nogaj ,  Surinder S. Sandhu ,  Eckhard Gartner

发明人： Manfred Reichardt ,  Christian Pieper ,  Alfred Nogaj ,  Surinder S. Sandhu ,  Eckhard Gartner

IPC分类号： D01F6/18 ,  D01F7/00

CPC分类号： D01F6/18

摘要： High-strength filaments of dry-spun polyacrylonitrile are obtained by a process in which tension-reduced spun filaments are continuously stretched hydrothermally in one or more stages: where it involves several stages, stretching is carried out at a temperature of the stretching medium gradually increasing from stage to stage up to .theta.=.theta..sub.n and, in the final (n-th) stage, to a degree of at least 50% of the maximum degree of stretching; where it is carried out in a single stage, stretching is carried out at the optimal stretching temperature .theta..sub.n, after which the material is further treated in the conventional way, optionally with fixing of the stretched material to a pre-determined extent.

摘要翻译： 干纺聚丙烯腈的高强度长丝通过以下方法获得：将拉伸纺丝丝在一个或多个阶段中水热连续拉伸的方法获得：其中包括几个阶段，拉伸在拉伸介质的温度下逐渐增加 从阶段到阶段到θ=θn，并且在最后（第n）阶段中，达到最大拉伸程度的至少50％的程度; 在单一阶段进行，在最佳拉伸温度θn下进行拉伸，然后以常规方式进一步处理材料，任选地将拉伸的材料固定到预定的程度。