公开(公告)号：US4760129A

公开(公告)日：1988-07-26

申请号：US891025

申请日：1986-07-31

申请人： Erwin Haering ,  Heinz Herrmann ,  Wolfgang Klein ,  Herbert Ocker ,  Hans Werner ,  Elvina. S. Bokarjowa ,  Sijar N. Nurmuchamedow ,  Harry I. Feidel ,  Larisa A. Nosowa ,  Alla A. Dukor

发明人： Erwin Haering ,  Heinz Herrmann ,  Wolfgang Klein ,  Herbert Ocker ,  Hans Werner ,  Elvina. S. Bokarjowa ,  Sijar N. Nurmuchamedow ,  Harry I. Feidel ,  Larisa A. Nosowa ,  Alla A. Dukor

IPC分类号： C08G69/28 ,  C08G69/48 ,  C08G69/46

CPC分类号： C08G69/28 ,  C08G69/48

摘要： A process for preparing highly viscous polyhexamethyleneadipamide by postpolycondensing the melt of a polymer having a relative viscosity of 2.5-2.7 (measured in a 1% strength solution in 96% strength sulfuric acid) in a twin-screw extruder having degassing zones and closely meshing screws which turn in the same direction. The polymer melt is polycondensed in the extruder by treatment in a plurality of serially arranged zones of alternatingly elevated and reduced pressure, wherein in the zones of elevated pressure, steam superheated to the temperature of the melt is supplied to the melt in an amount of 0.05-0.7 kg/kg of polymer, whereas in the zones of reduced pressure, the input vapor phase and water of condensation are drawn off. The temperature of the melt is raised at a uniform rate over the length of the extruder from 260.degree.-280.degree. C. in the first zone to 280.degree.-310.degree. C. in the last zone.

摘要翻译： 通过在具有脱气区和紧密啮合的螺杆的双螺杆挤出机中将具有2.5-2.7相对粘度（在96％强度硫酸中的1％强度溶液中测量）的聚合物的熔体进行缩聚来制备高粘度聚己二酰己二胺的方法 这转向相同的方向。 聚合物熔体在挤出机中通过在多个连续排列的交替升高和降低的区域中进行处理而缩聚，其中在高压区中，过热至熔体温度的蒸汽以0.05的量供入熔体 -0.7kg / kg的聚合物，而在减压区域中，输入的气相和冷凝水被抽出。 熔体的温度在挤出机的长度上在第一区域的260〜-280℃以及最后一个区域的280〜-310℃下以均匀的速度升高。