公开(公告)号：US5799412A

公开(公告)日：1998-09-01

申请号：US832505

申请日：1997-04-03

申请人： Ryoichi Yamamoto ,  Satoru Ohtani ,  Toshimi Hachimori ,  Teruhisa Kojima ,  Takahiro Mamyoda

发明人： Ryoichi Yamamoto ,  Satoru Ohtani ,  Toshimi Hachimori ,  Teruhisa Kojima ,  Takahiro Mamyoda

IPC分类号： B01J8/12 ,  B01J8/18 ,  C08F6/00 ,  F26B17/14 ,  F26B21/14 ,  F26B25/00 ,  F26B17/00

CPC分类号： F26B21/14 ,  B01J8/12 ,  B01J8/1881 ,  C08F6/005 ,  F26B17/14 ,  F26B25/006

摘要： Drying of a solid polymer is disclosed in which a solid polymer obtained by polymerization (or a product of modification of the solid polymer) is contacted with a drying gas so that any solvent and/or unreacted polymerization feed materials remaining in the solid polymer are removed to thereby dry the solid polymer, and in which a gaseous polymerization feed material is used as the drying gas and contacted with the solid polymer to thereby dry the solid polymer (step i), and the resultant solid polymer is contacted with a drying gas which contains an inert gas (step ii). The drying gas can be recovered from the step (i) and part thereof can be recycled through a polymerization step as it is or be recycled, after cooling the drying gas to thereby remove any condensed components, to the step (i). Not only can the solid polymer be efficiently dried but also the solvent and unreacted polymerization feed materials recovered from the solid polymer can efficiently be recycled by the disclosed method.

摘要翻译： 公开了固体聚合物的干燥，其中通过聚合获得的固体聚合物（或固体聚合物的改性产物）与干燥气体接触，使得残留在固体聚合物中的任何溶剂和/或未反应的聚合原料被除去 从而干燥固体聚合物，并且其中使用气态聚合原料作为干燥气体并与固体聚合物接触，从而干燥固体聚合物（步骤i），并将所得固体聚合物与干燥气体接触，干燥气体 含有惰性气体（步骤ii）。 干燥气体可以从步骤（i）中回收，并且其一部分可以通过聚合步骤原样循环，或者在冷却干燥气体之后再循环，从而将任何冷凝的组分除去到步骤（i）。 固体聚合物不仅可以有效地干燥，还可以通过所公开的方法有效地回收从固体聚合物回收的溶剂和未反应的聚合原料。