公开(公告)号：US5451613A

公开(公告)日：1995-09-19

申请号：US405680

申请日：1995-03-17

申请人： Scott J. Smith ,  Eric J. Lind

发明人： Scott J. Smith ,  Eric J. Lind

IPC分类号： A61F13/15 ,  A61L15/60 ,  C08J9/28

CPC分类号： A61F13/53 ,  A61F13/15203 ,  A61L15/60 ,  A61F2013/530656

摘要： A carboxylic containing superabsorbent polymer having a swell rate of at least 0.3 g./g.sec., a gel strength of about 40,000 to about 150,000 dynes/cm.sup.2, a centrifuge capacity at 30 minutes of about 20 to about 50 g/g, an absorption permeability under pressure at 60 minutes of at least 5 g/g at wherein the ratio of the absorption permeability under pressure at 15 minutes is at least 25% of the absorption permeability under pressure at 60 minutes is disclosed. The superabsorbent polymer is prepared from a solution of carboxylic containing monomers, a cross linking agent, and a blowing agent. The polymer is subsequently treated with a surface crosslinking agent.