公开(公告)号：US3625871A

公开(公告)日：1971-12-07

申请号：US3625871D

申请日：1968-05-07

Applicant: BAYER AG

Inventor： TRAUBEL HARRO ,  KONIG KLAUS ,  HEYDKAMP WOLFGANG ,  BREER KARL

IPC: B01J19/18 ,  B29B7/40 ,  C08G18/08 ,  C08G18/10 ,  C08G18/12 ,  C08J9/28 ,  D06N3/14 ,  B29D27/04 ,  C08G22/00 ,  C08G22/36 ,  C08G22/44

CPC classification number: C08J9/28 ,  B01J19/18 ,  B01J2219/00094 ,  B01J2219/185 ,  B29B7/405 ,  C08G18/0871 ,  C08G18/10 ,  C08G18/12 ,  C08J2375/04 ,  D06N3/14 ,  Y10S264/62 ,  Y10S264/77 ,  Y10T428/249978 ,  Y10T428/31 ,  C08G18/70 ,  C08G18/72 ,  C08G18/40

Abstract: Microporous sheet structures are prepared by reacting a polymeric polyamine having a molecular weight of from about 350 to about 6000 with substantially an equivalent amount of an organic polyisocyanate in the presence of a nonsolvent for the product, shaping the reaction mixture into a sheet structure before polyaddition is complete and removing the nonsolvent.