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公开(公告)号：US11332550B2
公开(公告)日：2022-05-17
申请号：US16488659
申请日：2018-02-26
Applicant: BASF SE
Inventor： Stephan Bauer , Markus Toennessen , Christophe Bauduin , Katrin Baumann , Marco Krüger , Andreas Daiss , Markus Muehl
Abstract: An apparatus for production of pulverulent polymers having a reactor for droplet polymerization with an apparatus for dropletization of a monomer solution for the preparation of the polymer. The apparatus for dropletization has holes through which the monomer solution is introduced, an addition point for a gas above the apparatus for dropletization, at least one gas withdrawal point at the periphery of the reactor and a fluidized bed, wherein at least one of the following is fulfilled: an apparatus for increasing turbulence in the gas flow is disposed in the region of the apparatus for dropletization of the monomer solution, an apparatus for increasing turbulence in the gas flow is disposed in the region of the addition point for the gas, the addition point for gas is configured such that elevated turbulence is generated. A process for producing pulverulent polymers, in which an increase in flow turbulence in the gas flow in the region of the apparatus for dropletization also is disclosed.
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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：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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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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5.发明申请PROCESS FOR PRODUCING SURFACE- POSTCROSSLINKED WATER-ABSORBENT POLYMER PARTICLES 审中-公开生产表面 - 后交联水吸收聚合物颗粒的方法公开(公告)号：US20150299404A1
公开(公告)日：2015-10-22
申请号：US14443082
申请日：2013-11-07
Applicant: BASF SE
Inventor： Thomas Daniel , Norbert Herfert , Stephan Bauer , Katrin Baumann , Birgit Reinhard , Jürgen Freiberg , Christophe Bauduin , Katarzyna Dobrosielska-Oura , Michael A. Mitchell
CPC classification number: C08J3/245 , A61L15/225 , A61L15/425 , A61L15/60 , B01J20/267 , B01J20/28004 , B01J20/28011 , B01J20/28019 , C08F6/008 , C08F220/06 , C08F222/1006 , C08J3/247 , C08J9/00 , C08J2207/12 , C08J2333/02
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.
Abstract translation: 本发明涉及通过将具有0.03〜15重量％的残留单体含量的吸水性聚合物颗粒与至少一个表面后交联剂和热敏涂料一起涂覆来制备表面后交联的吸水性聚合物颗粒的方法 在100至180℃的温度下进行表面后交联。
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Patent Agency Ranking
公开(公告)号：US12083496B2
公开(公告)日：2024-09-10
申请号：US17046033
申请日：2019-04-09
Applicant: BASF SE
Inventor： Norbert Herfert , Bootsara Parchana , Sunantha Kaenthong , Stephan Bauer , Thomas Daniel , Katrin Baumann
IPC: B01J20/26 , B01J20/28 , B01J20/30 , C08F220/06
CPC classification number: B01J20/267 , B01J20/28016 , B01J20/3021 , B01J20/3085 , C08F220/06 , C08F2800/10 , C08F2810/20
Abstract: The invention relates to a process for producing long-term color stable superabsorbent polymer particles, comprising polymerization of a monomer solution, wherein the monomer solution comprises at least 0.01% by weight of 1-hydroxyethane-1,1-diphosphonic acid or a salt thereof and at least 0.01% by weight of 2-hydroxy-2-sulfonatoacetic acid or a salt thereof.
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公开(公告)号：US20200347192A1
公开(公告)日：2020-11-05
申请号：US16962659
申请日：2019-01-28
Applicant: BASF SE
Inventor： Stephan Bauer , Katrin Baumann , Markus Toennessen , Thomas Daniel , Hanno Rüdiger Wolf
Abstract: A method of pneumatically conveying superabsorbent particles, wherein the superabsorbent particles have been admixed with an aqueous wax dispersion prior to the pneumatic conveying, the wax has a glass transition temperature of at least 65° C. and, based on the untreated super-absorbent particles, from 0.020% to 0.20% by weight of wax has been used.
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公开(公告)号：US11491463B2
公开(公告)日：2022-11-08
申请号：US16958793
申请日：2019-01-02
Applicant: BASF SE
Inventor： Stephan Bauer , Katrin Baumann , Markus Toennessen , Christophe Bauduin , Markus Christian Biel , Thomas Daniel
Abstract: Superabsorbent mixtures M comprising at least 70% by weight of superabsorbent A having a liquid absorption of 20 g/g (T20) of less than 300 s and/or a volumetric liquid absorption under pressure 0.3 psi (2.07 kPa) (VAUL) with a τ value of less than 400 s, and at least 5% by weight of superabsorbent B having a centrifuge retention capacity (CRC) of at least 30 g/g.
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公开(公告)号：US20200060897A1
公开(公告)日：2020-02-27
申请号：US16482045
申请日：2018-02-12
Applicant: BASF SE
Inventor： Thomas Daniel , Christophe Bauduin , Katrin Baumann , Katarzyna Dobrosielska-Oura
IPC: A61F13/537 , A61L15/60
Abstract: A fluid-absorbent article includes an upper liquid-pervious layer (A), a lower liquid-impervious layer (B), a fluid-absorbent core (C) between (A) and (B) including at least 60% by weight of non-surface postcrosslinked fluid-absorbent polymer particles and not more than 40% by weight of fibrous material, based on the sum of non-surface postcrosslinked fluid-absorbent polymer particles and fibrous material. An acquisition-distribution layer (D) between (A) and (C) includes at least 90% by weight of synthetic fibers and not more than 10% by weight of cellulose based fibers, based on the sum of synthetic fibers and cellulose based fibers. The basis weight of the acquisition-distribution layer (D) is at least 70 gsm. The fluid-absorbent polymer particles have a saline flow conductivity (SFC) of less than 5×10−7 cm3s/g and an AUHL of less than 15 g/g. Preferably the acquisition-distribution layer (D) is a non-woven web including a three dimensional network of fibers.
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10.发明授权公开(公告)号：US09790304B2
公开(公告)日：2017-10-17
申请号：US14442501
申请日：2013-11-11
Applicant: BASF SE
Inventor： Thomas Daniel , Norbert Herfert , Stephan Bauer , Katrin Baumann , Birgit Reinhard , Jürgen Freiberg , Rudolf Schliwa
IPC: B01J20/32 , C08F220/06 , C08F6/00 , A61L15/42 , A61L15/60 , A61L15/22 , C08L33/02 , A61L15/24 , B01J20/26 , B01J20/28
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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