公开(公告)号：AT112293T

公开(公告)日：1994-10-15

申请号：AT90114333

申请日：1990-07-26

Applicant: BASF AG

Inventor： NIESSNER MANFRED DR ,  BECK JUERGEN ,  HARTMANN HEINRICH DR ,  KEMNA ANDREAS H ,  WICKEL STEFAN DR

IPC: A61F13/53 ,  A61F13/15 ,  A61F13/49 ,  B01J20/26 ,  C08F6/00 ,  C08J3/00

Abstract: Process for improving the water absorption capacity of crosslinked, water-swellable polymers by treating water-containing, finely divided polymer gels having a solids content of 20 to 65% by weight at temperatures of at least 50 DEG C with steam, the solids content of the water-containing polymer gels being increased by not more than 30% by weight and the polymer gels then being dried in a conventional manner.

公开(公告)号：DE3843780A1

公开(公告)日：1990-07-05

申请号：DE3843780

申请日：1988-12-24

Applicant: BASF AG

Inventor： NIESSNER MANFRED DR ,  WICKEL STEFAN DR ,  HEIDE WILFRIED DR ,  HARTMANN HEINRICH DR

IPC: A61L15/24 ,  A61L15/60 ,  C08F2/10 ,  C08F2/20 ,  C08F2/24 ,  C08F220/04 ,  C08F220/06 ,  C08F290/00 ,  C08F290/04 ,  C08F299/02