公开(公告)号：US06881477B2

公开(公告)日：2005-04-19

申请号：US10294604

申请日：2002-11-15

申请人： Ulrich Presenz ,  Rosmarie Hartmann ,  Hans Rudolf Luck

发明人： Stephan Schmid

IPC分类号： C08G69/04 ,  C08G69/26 ,  C08G69/28 ,  C08K5/098 ,  C08L77/06 ,  B32B5/16 ,  B29D22/00 ,  B32B17/02 ,  C08F6/00

CPC分类号： C08G69/28 ,  C08G69/04 ,  C08G69/265 ,  Y10T428/13 ,  Y10T428/1317 ,  Y10T428/1321 ,  Y10T428/139 ,  Y10T428/1393 ,  Y10T428/29 ,  Y10T428/2969 ,  Y10T428/2982

摘要： A method is disclosed for producing a polyamide molding compound which includes the following method steps: addition and dissolving of m-xylylene diamine and dicarboxylic acids, which include adipic acid and aromatic dicarboxylic acids, with water and additives in a dissolving chamber and production of a mixture, the sum of the aromatic dicarboxylic acids added being 2 mol-percent to 15 mol-percent (in relation to the addition of dicarboxylic acids); transfer of the mixture into a reaction vessel and polycondensation of the mixture in this reaction vessel; granulation of the polycondensate; drying of the granulate. This method is distinguished in that the polycondensation is performed at a pressure of at most 10 bar and a temperature of 255° C. to 270° C., the pressure being built up while heating the reaction vessel to 255° C. to 270° C. and—immediately after the mixture has reached the maximum temperature—being reduced to atmospheric conditions while maintaining a temperature of 255° C. to 270° C., and the polycondensation being continued at this temperature and a pressure of less than 800 millibar; and the granulate is subjected to an underwater crystallization before drying.

摘要翻译： 公开了一种制造聚酰胺模塑料的方法，其包括以下方法步骤：在溶解室中将包含己二酸和芳族二羧酸的间二甲苯二胺和二羧酸与水和添加剂相加和溶解，并制备 混合物中加入的芳族二羧酸的总和为2摩尔％至15摩尔％（相对于加成二羧酸）; 将混合物转移到反应容器中并使该反应容器中的混合物缩聚; 造粒的缩聚物; 干燥颗粒。 该方法的区别在于，在至多10巴的压力和255℃至270℃的温度下进行缩聚，在将反应容器加热至255℃至270℃的同时， 并且在混合物已经达到最大温度降至大气条件之后立即，同时保持255℃至270℃的温度，并且缩聚在该温度下持续并且压力小于800毫巴 ; 在干燥前对颗粒进行水下结晶。