公开(公告)号：US5057260A

公开(公告)日：1991-10-15

申请号：US504491

申请日：1990-04-04

申请人： Ulrich Reinehr ,  Heinz Gall ,  Josef Kulig ,  Rudi Dauscher ,  Rolf-Burkhard Hirsch

发明人： Ulrich Reinehr ,  Heinz Gall ,  Josef Kulig ,  Rudi Dauscher ,  Rolf-Burkhard Hirsch

IPC分类号： C08G18/10 ,  C08G18/65 ,  D01D5/04 ,  D01D5/084 ,  D01F6/70 ,  D01F6/78

CPC分类号： D01F6/70 ,  D01D5/04

摘要： An improved dry spinning process for the production of polyurethane elastomer threads using superheated steam as the spinning medium, comprising(1) spinning polyurethane-urea elastomers prepared by chain lengthening of NCO prepolymers with diamine from a solution containing dimethylformamide or dimethylacetamide via a hot spinneret having a nozzle at not less than 100.degree. C. and at a spinning solution temperature in the nozzle of not less than 100.degree. C. into a heated spinning chimney at a chimney wall temperature of not less than 160.degree. C., while(2) introducing superheated steam into the spinning chimney at a temperature above 250.degree. C. as the spinning medium in an amount of at least 20 kg/h, if the chimney diameter is less than or equal to 28 cm, or if the chimney diameter is greater than 28 cm, in an amount of at least 20 kg/h increased by up to a factor H, wherein factor H is equal to the chimney cross-section/615 cm.sup.2,(3) feeding the spinning medium and spinning solvent to a recovery step at the end of the spinning chimney, and(4) maintaining a take-off speed of the threads from the chimney of at least 250 m/min. The improved process yields improved thread properties in the resulting filament yarns.

摘要翻译： 一种用于生产使用过热蒸汽作为纺丝介质的聚氨酯弹性体丝线的改进的干法纺丝方法，包括（1）通过热喷丝板从含有二甲基甲酰胺或二甲基乙酰胺的溶液中将NCO预聚物与二胺链延长制备的聚氨酯 - 脲弹性体纺丝， 喷嘴不低于100℃，喷嘴中纺丝溶液温度不低于100℃进入加热纺丝烟囱，烟囱壁温度不低于160℃，而（2） 如果烟囱直径小于或等于28厘米，则将过热蒸汽以超过250℃的温度作为纺丝介质以至少20kg / h的量引入到旋转烟囱中，或者如果烟囱直径更大 超过28cm，至少20kg / h的量增加到因子H，其中因子H等于烟囱横截面/ 615cm 2，（3）将纺丝介质和纺丝溶剂输送到ar 在旋转烟囱末端的生态步骤，以及（4）保持螺纹从烟囱起飞的速度至少为250米/分钟。 改进的方法在所得的长丝纱中产生改善的丝线性能。

公开(公告)号：US4725636A

公开(公告)日：1988-02-16

申请号：US847782

申请日：1986-04-03

申请人： Michael Kausch ,  Hans Schroer ,  Karl-Heinz Wolf ,  Heinz Gall ,  Carlhans Suling ,  Rudi Dauscher

发明人： Michael Kausch ,  Hans Schroer ,  Karl-Heinz Wolf ,  Heinz Gall ,  Carlhans Suling ,  Rudi Dauscher

IPC分类号： C08G18/10 ,  C08G18/32 ,  C08K5/00 ,  C08K5/13 ,  C08L75/04 ,  D01F6/70

CPC分类号： D01F6/70 ,  C08G18/10 ,  C08G18/3275 ,  C08G18/3287 ,  C08K5/005 ,  C08K5/13 ,  C08L75/04

摘要： In the production of elasthane threads by solution spinning of polyurea polyurethanes by conventional spinning processes, excellent stabilization against light and noxious gases are obtained if at least one component of the system to be spun contains tertiary amino groups and the substances used as antioxidizing agents are phenols of the kind which do not form colored nitro compounds.

摘要翻译： 在通过常规纺丝方法通过聚脲聚氨酯的溶液纺丝生产弹性线时，如果待纺制品的至少一种组分含有叔氨基，并且用作抗氧化剂的物质是酚类，则可获得对光和有毒气体的极好的稳定性 不形成有色硝基化合物的那种。

公开(公告)号：US5313873A

公开(公告)日：1994-05-24

申请号：US959101

申请日：1992-10-09

申请人： Heinz Gall ,  Kurt Senn

发明人： Heinz Gall ,  Kurt Senn

IPC分类号： F15B11/00 ,  F15B1/02 ,  F15B13/044

CPC分类号： F15B1/02 ,  Y10T137/86421 ,  Y10T137/87217

摘要： A fluid unit, for example a piston/cylinder unit, is supplied with fluid via a cyclically opened or closed on/off valve. The vacuum peaks occurring on the outlet side of the on/off valve when it is closed and the inertia forces of the flowing fluid are used to supply additional fluid to the fluid unit via a non-return valve leading from a low-pressure connection or reservoir to the fluid unit.

摘要翻译： 流体单元，例如活塞/气缸单元，经由循环打开或关闭的开/关阀供给流体。 当关闭阀门时，在开/关阀的出口侧出现的真空峰值通过流体流体的惯性力通过从低压连接引导的止回阀向流体单元供应， 储存器到流体单元。