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公开(公告)号：BRPI0720482A2
公开(公告)日：2014-01-14
申请号：BRPI0720482
申请日：2007-12-12
Applicant: BASF SE
Inventor： STUEVEN UWE , FUNK RUEDIGER , WEISMANTEL MATTHIAS , HEIDE WILFRIED , KRUEGER MARCO
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.
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公开(公告)号：BRPI0714444A2
公开(公告)日：2013-03-19
申请号：BRPI0714444
申请日：2007-07-12
Applicant: BASF SE
Inventor： STUEVEN UWE , WEISMANTEL MATTHIAS , HEIDE WILFRIED , KRUEGER MARCO , SEIDL VOLKER , BLEI STEFAN , LOESCH DENNIS , FUNK RUEDIGER , HILLEBRECHT ANNEMARIE
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 a water-insoluble inorganic salt is suspended in the monomer solution and the polymer beads have a mean diameter of at least 150 μm.
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公开(公告)号：AT552295T
公开(公告)日：2012-04-15
申请号：AT02719706
申请日：2002-01-18
Applicant: BASF SE
Inventor： DANIEL THOMAS , RIEGEL ULRICH , WEISMANTEL MATTHIAS
IPC: A61F13/53 , C08K3/32 , A61F5/44 , A61F13/15 , A61F13/49 , A61L15/18 , A61L15/60 , B01J20/26 , B01J20/30 , C09K17/02 , C09K17/20 , C09K17/40 , C09K101/00
Abstract: Disclosed is a water absorbent comprising particles of a water absorbent polymer whose surface is associated with a water insoluble metal phosphate. It possesses an improved performance profile comprising high absorption capacity, improved fluid transportation performance and a faster swell rate.
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公开(公告)号：AT496638T
公开(公告)日：2011-02-15
申请号：AT07787355
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
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.
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公开(公告)号：DE502006008569D1
公开(公告)日：2011-02-03
申请号：DE502006008569
申请日：2006-08-23
Applicant: BASF SE
Inventor： FUNK RUEDIGER , WEISMANTEL MATTHIAS , STUEVEN UWE
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Patent Agency Ranking
公开(公告)号：ZA200901111B
公开(公告)日：2010-04-28
申请号：ZA200901111
申请日：2009-02-17
Applicant: BASF SE
Inventor： WEISMANTEL MATTHIAS , HEIDE WILFRIED , KRUEGER MARCO , SEIDL VOLKER , LOESCH DENNIS , FUNK RUEDIGER , STUEVEN UWE , BLEI STEFAN , HILLEBRECHT ANNEMARIE
IPC: A61L20100101 , C08F20100101 , C08J20100101
Abstract: A process for preparing postcrosslinked water-absorbing polymer beads with high absorption by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets, wherein the solids content of the monomer solution is at least 35% by weight and the polymer beads have a mean diameter of at least 150 μm.
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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
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.
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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.
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公开(公告)号：DE502005011278D1
公开(公告)日：2011-06-01
申请号：DE502005011278
申请日：2005-02-18
Applicant: BASF SE
Inventor： RIEGEL ULRICH , DANIEL THOMAS , WEISMANTEL MATTHIAS , ELLIOTT MARK , HERMELING DIETER
IPC: C08J3/24 , C08F20/06 , C08F220/06
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公开(公告)号：AT506393T
公开(公告)日：2011-05-15
申请号：AT05715387
申请日：2005-02-18
Applicant: BASF SE
Inventor： RIEGEL ULRICH , DANIEL THOMAS , WEISMANTEL MATTHIAS , ELLIOTT MARK , HERMELING DIETER
IPC: C08J3/24 , C08F20/06 , C08F220/06
Abstract: The invention concerns a process for producing water-absorbing polymer, which comprises a base polymer A being mixed with a first aqueous solution B of at least one surface postcrosslinker and a second aqueous solution C of at least one polyvalent cation and thermally treated, wherein said base polymer A is based on at least 50% neutralized acid-functional monomer and said solutions B and C are metered wholly or partly concurrently through separate nozzles whereby a water-absorbing polymer having a high saline flow conductivity value is obtained.
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