公开(公告)号：EP3230499A2

公开(公告)日：2017-10-18

申请号：EP15864618.2

申请日：2015-12-02

申请人： Braskem America, Inc.

发明人： BUENO, Marcos Roberto Paulino ,  BERNARDI, Alessandro ,  WESTFAHL, Harry

IPC分类号： D01F6/04 ,  D01D5/06 ,  D02J1/22

CPC分类号： D01F6/04 ,  D01D1/02 ,  D01D10/06

摘要： The present invention provides a continuous method for the production of at least one polymeric yarn comprising the steps of: mixing a polymer with a first solvent generating a mixture; homogenizing the mixture; rendering the mixture inert; dosing the mixture to an extruder; immersing the mixture in a quenching bath (30), wherein an air gap is maintained before the mixture achieves the surface of the liquid of the quenching bath (30) forming at least one polymeric yarn; drawing at least once the at least one polymeric yarn; washing the polymeric yarn with a second solvent that is more volatile than the first solvent; heating the at least one polymeric yarn; drawing at room temperature, at least once, the at least one polymeric yarn; and heat drawing, at least once, the at least one polymeric yarn, wherein the mixture comprises: a polymer comprising ultra-high molecular weight polyethylene, comprising an intrinsic viscosity of from 5 dL/g to 40 dL/g, and a polydispersity index of from 2 to 10; and a first solvent capable of dissolving the polymer under the process conditions, and comprising a dynamic viscosity, measured at a temperature of 37.8 °C, according to ASTM D-445, greater than 10 cP. The present invention further provides a continuous system for the production of at least one polymeric yarn, comprising: means for mixing the polymer with a first solvent generating a mixture; means for homogenizing the mixture; means for rendering the mixture inert; means for dosing the mixture to an extruder; means for immersing the mixture in a quenching bath (30), wherein an air gap is maintained before the mixture achieves the surface of the liquid of the quenching bath (30) forming at least one polymeric yarn; means for drawing at least once the at least one polymeric yarn; means for washing for washing the at least one polymeric yarn with a second solvent that is more volatile than the first solvent; means for heating the at least one polymeric yarn; means for drawing at room temperature at least once the at least one polymeric yarn; and means for heat drawing at least once the at least one polymeric yarn, wherein the mixture comprises: a polymer comprising ultra-high molecular weight polyethylene, comprising an intrinsic viscosity of from 5dL/g to 40dL/g, and a polydispersity index of from 2 to 10; and a first solvent capable of dissolving the polymer under the process conditions and comprising a dynamic viscosity, as measured at a temperature of 37.8 °C according to the ASTM standard D-445, greater than 10 cP. Further, the present invention provides a polymeric yarn made according to the above stated method.

摘要翻译： 本发明提供了生产至少一种聚合物纱线的连续方法，其包括以下步骤：将聚合物与第一溶剂混合，产生混合物; 均化混合物; 使混合物呈惰性; 将混合物定量投入挤出机; 将混合物浸入骤冷浴（30）中，其中在混合物达到淬火浴（30）的液体表面形成至少一根聚合物纱线之前保持气隙; 至少拉伸一根所述至少一根聚合物纱线; 用比第一溶剂更易挥发的第二溶剂洗涤聚合物纱线; 加热该至少一根聚合物纱线; 在室温下至少一次拉伸所述至少一根聚合物纱线; 和至少一次热拉伸所述至少一根聚合物纱线，其中所述混合物包含：包含超高分子量聚乙烯的聚合物，其特征粘度为5dL / g-40dL / g，多分散指数 从2到10; 和能够在工艺条件下溶解聚合物的第一溶剂，并且根据ASTM D-445在37.8℃的温度下测量的动态粘度大于10cP。 本发明进一步提供用于生产至少一种聚合物纱线的连续系统，其包括：用于将聚合物与第一溶剂混合以产生混合物的装置; 均化混合物的装置; 用于使混合物呈惰性的装置; 用于将混合物定量给挤出机的装置; 用于将混合物浸入骤冷浴（30）中的装置，其中在混合物达到骤冷浴（30）的液体表面形成至少一根聚合物纱线之前维持气隙; 用于拉伸至少一根聚合物纱线的装置; 用比所述第一溶剂更易挥发的第二溶剂清洗所述至少一根聚合物纱线的装置; 用于加热所述至少一根聚合物纱线的装置; 用于在室温下拉伸至少一根所述至少一根聚合物纱线的装置; 以及用于对所述至少一根聚合物纱线进行至少一次热拉伸的装置，其中所述混合物包含：包含超高分子量聚乙烯的聚合物，其特征粘度为5dL / g至40dL / g，多分散指数为 2至10; 以及在工艺条件下能够溶解聚合物的第一溶剂，其包含根据ASTM标准D-445在37.8℃的温度下测量的动态粘度大于10cP。 此外，本发明提供了根据上述方法制造的聚合物纱线。