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公开(公告)号：US12196660B2
公开(公告)日：2025-01-14
申请号：US16968225
申请日：2019-02-18
Applicant: BASF SE
Inventor： Markus Toennessen , Marc Haefner , Karsten Kraemer , Christophe Bauduin , Thomas Daniel
IPC: G01N15/08
Abstract: A method of measuring indices in superabsorbents, by initially charging excess aqueous solution or dispersion, swelling the superabsorbent in the initially charged aqueous solution or dispersion while stirring, dissolving or dispersing a component A in the aqueous solution or dispersion, measuring the enrichment of component A in the aqueous solution or dispersion during the swelling of the superabsorbent, using the enrichment of component A in the aqueous solution or dispersion to measure the time-dependent swelling characteristics and using these to determine the swelling constant k or the characteristic swell time τ, the index being dependent on the permeability of the superabsorbent, and ascertaining the index by means of a correlation measured beforehand between swelling constant k and index or characteristic swell time τ and index.
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公开(公告)号：US11813589B2
公开(公告)日：2023-11-14
申请号：US16757523
申请日：2018-10-31
Applicant: BASF SE
Inventor： Kristine Hartnagel , Wanthip Poomsuwan , Patrick Neal Hamilton , Norbert Herfert , Thomas Daniel , Olaf Hoeller
IPC: B01J20/32 , A61L15/18 , A61L15/24 , A61L15/60 , B01J20/02 , B01J20/26 , B01J20/30 , C08J3/07 , C08J3/12 , C08J3/24
CPC classification number: B01J20/3236 , A61L15/18 , A61L15/24 , A61L15/60 , B01J20/0292 , B01J20/267 , B01J20/3021 , C08J3/07 , C08J3/12 , C08J3/245 , B01J2220/68 , C08J2333/02
Abstract: In an improved superabsorbent complexed with aluminum ions, the aluminum ions are applied in the form of an aqueous solution comprising aluminum ions, which has the feature that it comprises aluminum ions in a proportion within the range of 0.5%-15% by weight (converted if appropriate to Al3+), based on the total mass of the solution, and further comprises anions of lactic acid (lactate ions) and phosphoric acid (phosphate ions), where the molar proportion of the lactate ions is within the range of 0.01-2.99 times the molar amount of Al3+ and the molar proportion of the phosphate ions is within the range of 0.01-2.99 times the molar amount of Al3+.
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公开(公告)号：US20220235152A1
公开(公告)日：2022-07-28
申请号：US17717598
申请日：2022-04-11
Applicant: BASF SE
Inventor： Kristine Hartnagel , Thomas Gieger , Thomas Daniel , Marcus Schroeder , Michelle Morano , Nathaniel Troy Greene
IPC: C08F2/22 , C08K3/011 , A61L15/60 , B01J20/26 , B01J20/28 , C08F2/01 , C08F2/44 , C08F6/14 , C08F220/06 , C08J3/12 , C08J3/24 , C08K3/30 , C08K5/5317
Abstract: A process for producing superabsorbents, comprising polymerization of a monomer solution and thermal surface postcrosslinking, wherein the monomer solution comprises at least 0.75% by weight of a hydroxyphosphonic acid or salts thereof, calculated on the basis of the total amount of monomer used, and at least 0.09% by weight of aluminum cations, calculated on the basis of the total amount of polymer particles used, is added to the polymer particles before, during or after the thermal surface postcrosslinking.
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公开(公告)号：US11142614B2
公开(公告)日：2021-10-12
申请号：US16217740
申请日：2018-12-12
Applicant: BASF SE
Inventor： Thomas Daniel , Norbert Herfert , Stephan Bauer , Katrin Baumann , Birgit Reinhard , Jürgen Freiberg , Christophe Bauduin , Katarzyna Dobrosielska-Oura , Michael A. Mitchell
IPC: C08J3/24 , C08J9/00 , A61L15/22 , A61L15/42 , A61L15/60 , B01J20/26 , B01J20/28 , C08F6/00 , C08F220/06 , C08F222/10
Abstract: The present invention relates to a process for producing surface-postcrosslinked water-absorbent polymer particles by coating of water-absorbent polymer particles having a content of residual monomers in the range from 0.03 to 15% by weight with at least one surface-postcrosslinker and thermal surface-postcrosslinking at temperatures in the range from 100 to 180° C.
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公开(公告)号：US10682435B2
公开(公告)日：2020-06-16
申请号：US15552844
申请日：2016-02-17
Applicant: BASF SE
Inventor： Tina Mark , Thomas Daniel , Stefan Molter , Erich Lutz
IPC: C08F2/14 , A61L15/60 , C08F2/18 , C08F220/06 , C08F222/38
Abstract: A process for producing water-absorbing polymer particles by suspension polymerization, wherein the polymerization is conducted in the presence of dissolved oxygen.
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Patent Agency Ranking
公开(公告)号：US20180126032A1
公开(公告)日：2018-05-10
申请号：US15564212
申请日：2016-03-24
Applicant: BASF SE
Inventor： Tina Mark , Thomas Daniel , Erich Lutz , Stefan Molter
IPC: A61L15/60 , A61L15/22 , C08F265/06 , C08F6/18 , C08L101/14 , C08L51/00
CPC classification number: A61L15/60 , A61L15/22 , C08F6/18 , C08F265/04 , C08F265/06 , C08J3/12 , C08J2300/14 , C08L51/003 , C08L101/14 , C08F265/02 , C08F220/06 , C08F222/385
Abstract: A process for agglomerating superabsorbent particles, wherein polymer particles having a particle size of 250 μm or less are dispersed in a hydrophobic organic solvent, the dispersed polymer particles are mixed with an aqueous monomer solution, the total amount of water applied to the dispersed polymer particles being at least 100% by weight, based on the dispersed polymer particles, and the monomer solution is polymerized.
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17.发明申请公开(公告)号：US20180044486A1
公开(公告)日：2018-02-15
申请号：US15552858
申请日：2016-01-26
Applicant: BASF SE
Inventor： Stephan Bauer , Yvonne Hagen , Katrin Baumann , Christophe Bauduin , Thomas Daniel , Thomas Pfeiffer
CPC classification number: C08J3/245 , A61L15/24 , A61L15/60 , B01J20/267 , B01J20/28004 , C08F2/10 , C08F220/06 , C08J2333/02 , C09D133/02
Abstract: The present invention relates to a process for producing surface-postcrosslinked water-absorbent polymer particles comprising polymerizing droplets of a monomer solution, wherein water-absorbent polymer particles having an average particle diameter from 150 to 400 μηη, an amount of water-absorbent polymer particles having a particle size of less than 100 μηη of less than 5% by weight and an amount of water-absorbent polymer particles having a particle size of more than 500 μηη of less than 5% by weight are coated with at least one surface-postcrosslinker and thermal surface-postcrosslinked.
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18.发明申请公开(公告)号：US20170320983A1
公开(公告)日：2017-11-09
申请号：US15661543
申请日：2017-07-27
Applicant: BASF SE
Inventor： Thomas Daniel , Norbert Herfert , Stephan Bauer , Katrin Baumann , Birgit Reinhard , Jürgen Freiberg , Rudolf Schliwa
IPC: C08F220/06 , C08F6/00 , B01J20/28 , B01J20/26 , A61L15/22 , A61L15/60 , A61L15/42 , A61L15/24 , C08L33/02
CPC classification number: C08F220/06 , A61L15/22 , A61L15/24 , A61L15/42 , A61L15/60 , B01J20/267 , B01J20/28023 , B01J20/2805 , C08F6/005 , C08L33/02 , C08L33/08 , C08F2222/1013
Abstract: The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution comprising less than 0.3% by weight of persulfate and at least 0.05% by weight of azo initiator and thermal aftertreatment of the formed polymer particles at less than 100° C. in a fluidized bed for 60 to 300 minutes.
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公开(公告)号：US20170266640A1
公开(公告)日：2017-09-21
申请号：US15532153
申请日：2015-11-24
Applicant: BASF SE
Inventor： Tina Mark , Thomas Daniel , Erich Lutz , Stefan Molter , Anna Kowalski
CPC classification number: B01J20/265 , A61F13/53 , A61F2013/530226 , A61L15/24 , A61L15/60 , B01J20/3085 , C08F2/18 , C08F20/06 , C08J3/245 , C08J2333/02 , C08F220/06 , C08F222/385 , C08F2222/1026
Abstract: A process for producing water-absorbing polymer particles by suspension polymerization and thermal surface postcrosslinking, wherein the agglomerated base polymer obtained by suspension polymerization has a centrifuge retention capacity of at least 37 g/g and the thermal surface postcrosslinking is conducted at 100 to 190° C.
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公开(公告)号：US20150306272A1
公开(公告)日：2015-10-29
申请号：US14651259
申请日：2013-12-09
Applicant: BASF SE
Inventor： Asif Karim , Thomas Daniel , Christine Schön
CPC classification number: A61L15/46 , A61F13/53 , A61F13/8405 , A61F2013/530481 , A61F2013/8408 , A61L15/20 , A61L15/24 , A61L15/60 , C07C31/20 , F04C2270/041
Abstract: Superabsorbents comprising 1,2-decanediol exhibit reduced odor formation.
Abstract translation: 包含1,2-癸二醇的超吸收剂表现出减少的气味形成。
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