公开(公告)号：BRPI0714447A2

公开(公告)日：2013-03-12

申请号：BRPI0714447

申请日：2007-07-11

Applicant: BASF SE

Inventor： STUEVEN UWE ,  WEISMANTEL MATTHIAS ,  HEIDE WILFRIED ,  KRUEGER MARCO ,  SEIDL VOLKER ,  BLEI STEFAN ,  LOESCH DENNIS ,  FUNK RUEDIGER ,  HILLEBRECHT ANNEMARIE

IPC: C08F2/10 ,  C08F20/04

Abstract: A process for preparing water-absorbing polymer beads with high permeability by polymerizing droplets of a monomer solution, comprising monomers bearing acid groups, in a gas phase surrounding the droplets, wherein the monomer solution comprises polyvalent cations and the polymer beads have a mean diameter of at least 150 μm.

公开(公告)号：AT534671T

公开(公告)日：2011-12-15

申请号：AT05796468

申请日：2005-09-21

Applicant: BASF SE

Inventor： FUNK RUEDIGER ,  HILLEBRECHT ANNEMARIE ,  DE KAEY RONNY ,  VAN ESBROECK DOMINICUS ,  WEISMANTEL MATTHIAS ,  STUEVEN UWE ,  POSSEMIERS KARL

IPC: C08F2/01 ,  B01J19/00 ,  C08F2/10 ,  C08F6/10 ,  C08F220/06 ,  C08F220/56 ,  C08J3/12 ,  C08J3/24

Abstract: In the continuous preparation of finely divided, gel-form, crosslinked polymers (I) by copolymerizing water-soluble mono-ethylenically unsaturated monomers (II) with 0.001-5 mol. % (based on (II)) of monomers (III) containing at least two polymerizable groups in a kneader through which materials are transported axially, (a) the degree of filling of the kneader is at least 71%, (b) (II) contains up to 150 ppm hydroquinone hemi-ether (IV), (c) the polymerization zone temperature is more than 65[deg]C and/or (d) the kneader has back mixing ratio less than 0.33.

公开(公告)号：DE502006009114D1

公开(公告)日：2011-04-28

申请号：DE502006009114

申请日：2006-07-03

Applicant: BASF SE

Inventor： HILLEBRECHT ANNEMARIE ,  STUEVEN UWE ,  VAN MIERT LEO ,  VAN ESBROECK DOMINICUS ,  BRIAN BERND ,  CHSZANIECKI SIEGFRIED

IPC: B01J19/20 ,  B01J8/00

公开(公告)号：DE502008002757D1

公开(公告)日：2011-04-14

申请号：DE502008002757

申请日：2008-08-25

Applicant: BASF SE

Inventor： LOESCH DENNIS ,  KRUEGER MARCO ,  STUEVEN UWE ,  HEIDE WILFRIED ,  WEISMANTEL MATTHIAS ,  BLEI STEFAN

IPC: A61L15/22 ,  A61L15/60 ,  C08F2/10 ,  C08F2/34 ,  C08F20/04 ,  C08F220/06 ,  C08J3/24

公开(公告)号：ZA200901114B

公开(公告)日：2010-04-28

申请号：ZA200901114

申请日：2009-02-17

Applicant: BASF SE

Inventor： STUEVEN UWE ,  WEISMANTEL MATTHIAS ,  HEIDE WILFRIED ,  KRUEGER MARCO ,  SEIDL VOLKER ,  BLEI STEFAN ,  LOESCH DENNIS ,  FUNK RUEDIGER ,  HILLEBRECHT ANNEMARIE

IPC: A61L20100101 ,  C08F20100101 ,  C08J20100101

Abstract: A process for preparing water-absorbing polymer beads with high permeability by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets, wherein the monomer solution comprises at least 0.5% by weight of a crosslinker, based on the monomer, the polymerization in the droplet takes place in homogeneous phase, and the polymer beads have a mean diameter of at least 150 μm.

公开(公告)号：DE502005004152D1

公开(公告)日：2008-06-26

申请号：DE502005004152

申请日：2005-11-16

Applicant: BASF SE

Inventor： FUNK RUEDIGER ,  STUEVEN UWE ,  MARTIN FRIEDRICH-GEORG ,  SCHROEDER JUERGEN

IPC: C08F20/06 ,  A61L15/60 ,  C07C51/43 ,  C07C57/04

Abstract: The invention relates to processes for preparing water absorbing polymers by polymerization of a monomer solution comprising allyl acrylate and/or allyl alcohol, the solution comprising not more than 0.002% by weight of allyl acrylate and/or allyl alcohol, based on acrylic acid, to aqueous monomer solutions for producing water absorbing polymers, to water absorbing polymers, to processes for producing hygiene articles and also to hygiene articles.

公开(公告)号：AT395369T

公开(公告)日：2008-05-15

申请号：AT05807619

申请日：2005-11-16

Applicant: BASF SE

Inventor： FUNK RUEDIGER ,  STUEVEN UWE ,  MARTIN FRIEDRICH-GEORG ,  SCHROEDER JUERGEN

IPC: C08F20/06 ,  A61L15/60 ,  C07C51/43 ,  C07C57/04

Abstract: The invention relates to processes for preparing water absorbing polymers by polymerization of a monomer solution comprising allyl acrylate and/or allyl alcohol, the solution comprising not more than 0.002% by weight of allyl acrylate and/or allyl alcohol, based on acrylic acid, to aqueous monomer solutions for producing water absorbing polymers, to water absorbing polymers, to processes for producing hygiene articles and also to hygiene articles.

公开(公告)号：BRPI0815765A2

公开(公告)日：2014-10-21

申请号：BRPI0815765

申请日：2008-08-25

Applicant: BASF SE

Inventor： LOESCH DENNIS ,  KRUEGER MARCO ,  STUEVEN UWE ,  HEIDE WILFRIED ,  WEISMANTEL MATTHIAS ,  BLEI STEFAN

IPC: A61L15/22 ,  A61L15/60 ,  C08F2/10 ,  C08F2/34 ,  C08F20/04 ,  C08F220/06 ,  C08J3/24

Abstract: A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a surrounding gas phase, wherein the monomer solution comprises at least 0.0002% by weight of oxygen and the oxygen content of the gas phase is at least 0.5% by volume.

公开(公告)号：BRPI0714445A2

公开(公告)日：2013-03-12

申请号：BRPI0714445

申请日：2007-07-11

Applicant: BASF SE

Inventor： STUEVEN UWE ,  WEISMANTEL MATTHIAS ,  HEIDE WILFRIED ,  KRUEGER MARCO ,  SEIDL VOLKER ,  BLEI STEFAN ,  LOESCH DENNIS ,  FUNK RUEDIGER ,  HILLEBRECHT ANNEMARIE

IPC: A61L15/22 ,  A61L15/60 ,  C08F2/10 ,  C08F20/04 ,  C08J3/24

Abstract: A process for preparing water-absorbing polymer beads with high permeability by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets, wherein the monomer solution comprises at least 0.5% by weight of a crosslinker, based on the monomer, the polymerization in the droplet takes place in homogeneous phase, and the polymer beads have a mean diameter of at least 150 μm.

公开(公告)号：AT517928T

公开(公告)日：2011-08-15

申请号：AT07848074

申请日：2007-12-12

Applicant: BASF SE

Inventor： STUEVEN UWE ,  FUNK RUEDIGER ,  WEISMANTEL MATTHIAS ,  HEIDE WILFRIED ,  KRUEGER MARCO

IPC: C08F2/00 ,  A61L15/60 ,  C08F2/10 ,  C08F2/16 ,  C08F2/18

Abstract: A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets and postcrosslinking the polymer particles, wherein the postcrosslinked polymer particles are at least partly coated.