公开(公告)号：DE50205825D1

公开(公告)日：2006-04-20

申请号：DE50205825

申请日：2002-12-06

Applicant: BASF AG

Inventor： DIETZEN DR ,  SCHERZER DR ,  QUEISSER DR ,  RUECK SWEN ,  EHRMANN DR ,  KRATZMUELLER WOLFGANG

IPC: C08J9/12 ,  C08J9/14 ,  C08J9/00 ,  C08L81/06

Abstract: Water, or a mixture (pts. wt.) of water (100) and organic liquid (at most 200) is used as the blowing agent in a method for the production of foam sheet by extruding a mixture of polysulfone or polyethersulfone and volatile blowing agent (1-10 wt.%) under pressure at above 300 degreesC into the open air.