公开(公告)号：US4105510A

公开(公告)日：1978-08-08

申请号：US744817

申请日：1976-11-24

申请人： Atsuo Tago ,  Ryoichi Yamanaka ,  Susumu Matsumoto

发明人： Atsuo Tago ,  Ryoichi Yamanaka ,  Susumu Matsumoto

IPC分类号： B01D21/01 ,  C08F6/00 ,  C08F6/06 ,  C08F6/12 ,  C08F20/00 ,  C08F20/34 ,  C07B5/00

CPC分类号： C08F6/12 ,  Y10S159/10

摘要： The invention relates to an improved process for removing water, under elevated temperature, from aqueous gel of water soluble polymer, such as polymer or copolymer of acrylamide and/or quaternary ammonium salts of dialkylaminoamlkylmethacrylate, to prevent from the deterioration of polymer properties. The process is accomplished by addition of polyhydric phenols, benzoquinones or derivatives thereof prior to removal of water.