公开(公告)号：BR0116621A

公开(公告)日：2003-12-23

申请号：BR0116621

申请日：2001-12-28

Applicant: BASF AG

Inventor： FRENZ VOLKER ,  HERFERT NORBERT ,  RIEGEL ULRICH ,  VOLZ WILLIAM E ,  MAJETTE THOMAS H ,  HILL JAMES M

IPC: A61F13/53 ,  A61F5/44 ,  A61F13/15 ,  A61F13/49 ,  A61L15/60 ,  B01J20/26 ,  C08J3/12 ,  A61L15/18

Abstract: The invention relates to non-water soluble hydrogels which can swell in water, and which are coated with steric or electrostatic spacers. Before being coated, the hydrogels comprise the following characteristics: absorbency under load (AUL) (0.7 psi) of at least 20 g/g, and gel strength of at least 1600 Pa. The coated hydrogels preferably have the following characteristics: centrifuge retention capacity (CRC) of at least 24 g/g, saline flow conductivity (SFC) of at least 30 x 10 cm s/g, and free swell rate (FSR) of at least 0.15 g/g s and/or a maximum vortex time of 160 s.

公开(公告)号：CA2433044A1

公开(公告)日：2002-07-11

申请号：CA2433044

申请日：2001-12-28

Applicant: BASF AG

Inventor： HILL JAMES M ,  FRENZ VOLKER ,  MAJETTE THOMAS H ,  HERFERT NORBERT ,  VOLZ WILLIAM E ,  RIEGEL ULRICH

IPC: A61F13/53 ,  A61F5/44 ,  A61F13/15 ,  A61F13/49 ,  A61L15/60 ,  B01J20/26 ,  C08J3/12 ,  A61L15/18

Abstract: The invention relates to non-water soluble hydrogels which can swell in wate r, and which are coated with steric or electrostatic spacers. Before being coated, the hydrogels comprise the following characteristics: absorbency und er load (AUL) (0.7 psi) of at least 20 g/g, and gel strength of at least 1600 P a. The coated hydrogels preferably have the following characteristics: centrifu ge retention capacity (CRC) of at least 24 g/g, saline flow conductivity (SFC) of at least 30 x 10-7 cm3 s/g, and free swell rate (FSR) of at least 0.15 g/g s and/or a maximum vortex time of 160 s.

公开(公告)号：PL362772A1

公开(公告)日：2004-11-02

申请号：PL36277201

申请日：2001-12-28

Applicant: BASF AG

Inventor： FRENZ VOLKER ,  HERFERT NORBERT ,  RIEGEL ULRICH ,  VOLZ WILLIAM E ,  MAJETTE THOMAS H ,  HILL JAMES M

IPC: A61F13/53 ,  A61F5/44 ,  A61F13/15 ,  A61F13/49 ,  A61L15/60 ,  B01J20/26 ,  C08J3/12

Abstract: The invention relates to non-water soluble hydrogels which can swell in water, and which are coated with steric or electrostatic spacers. Before being coated, the hydrogels comprise the following characteristics: absorbency under load (AUL) (0.7 psi) of at least 20 g/g, and gel strength of at least 1600 Pa. The coated hydrogels preferably have the following characteristics: centrifuge retention capacity (CRC) of at least 24 g/g, saline flow conductivity (SFC) of at least 30 x 10 cm s/g, and free swell rate (FSR) of at least 0.15 g/g s and/or a maximum vortex time of 160 s.