公开(公告)号：US3931130A

公开(公告)日：1976-01-06

申请号：US433708

申请日：1974-01-16

申请人： Heinz Beining

发明人： Heinz Beining

IPC分类号： C08F6/00 ,  C08F6/06 ,  C08F6/28 ,  C08F210/00 ,  C08F212/00

CPC分类号： C08F6/28

摘要： An improved process for the treatment of pellets of a partially crystalline polymer to aid in the removal of volatile impurities from the polymer pellets is disclosed. The improvement comprises the step of contacting the polymer with water at a temperature at least as high as the boiling point of the solvent used in the polymerization process, the temperature being between the boiling point and the temperature at which the pellets of polymer agglomerate. In preferred embodiments the polymer is an ethylene polymer, e.g., an ethylene homopolymer or copolymer of ethylene and a higher .alpha.-olefin (e.g. butene-1), and the process is conducted as a continuous process at temperatures between 115.degree. and 125.degree.C.