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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：US20210354108A1
公开(公告)日：2021-11-18
申请号：US17282012
申请日：2019-10-23
Applicant: BASF SE
Inventor： Katrin Baumann , Stephan Bauer , Thomas Daniel , Norbert Herfert , Christophe Bauduin
IPC: B01J20/26 , C08F220/06 , C08J3/24 , B01J20/28 , B01J20/30
Abstract: The invention relates to a process for producing long-term color stable superabsorbent polymer particles, comprising polymerization of a monomer solution, drying the resulting polymer gel, optionally grinding and classifying the resulting dried polymer gel and thermally surface post-crosslinking and cooling the resulting polymer particles, wherein a thermal surface post-cross-linker and hydrogen peroxide are added to the polymer particles prior to the thermal surface post-crosslinking.
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公开(公告)号：US20210169709A1
公开(公告)日：2021-06-10
申请号：US17048354
申请日：2019-04-09
Applicant: BASF SE
Inventor： Stephan Bauer , Katrin Baumann , Norbert Herfert , Li Guo DUAN , Le LI , Xiao Yan LIU , Gao Min SUN
Abstract: The present disclosure relates to fluid absorbent cores including at least one absorption layer, the layer including at least 80% by weight of water-absorbent polymer particles, 0 to 10% by weight of an adhesive and from 0 to 10% by weight of fibrous material, wherein the water-absorbent polymer particles within the absorption layer are water-absorbent polymer particles having a vortex of 40 s or less and having a roundness of 0.79 to 0.85 and/or a CRC of 38 g/g to 85 g/g.
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公开(公告)号：US20210121852A1
公开(公告)日：2021-04-29
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 , C08F220/06 , B01J20/28 , B01J20/30
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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Patent Agency Ranking
公开(公告)号：US20200231711A1
公开(公告)日：2020-07-23
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：US10208170B2
公开(公告)日：2019-02-19
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
IPC: C08J3/24 , A61L15/22 , A61L15/42 , B01J20/26 , B01J20/28 , C08F220/06 , C08J9/00 , A61L15/60 , 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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8.发明申请PROCESS FOR PRODUCING WATER-ABSORBENT POLYMER PARTICLES BY POLYMERIZING DROPLETS OF A MONOMER SOLUTION 有权通过聚合单体溶液的水溶液生产吸水聚合物颗粒的方法公开(公告)号：US20160332140A1
公开(公告)日：2016-11-17
申请号：US15112445
申请日：2015-01-14
Applicant: BASF SE
Inventor： Stephan Bauer , Norbert Herfert , Jürgen Freiberg , Rudolf Schliwa , Karl J. Possemiers , Robert Bayer
CPC classification number: B01J20/267 , B01J20/28016 , B01J20/3085 , C08F2/01 , C08F2/34 , C08F6/001 , C08F6/008 , C08L33/02 , C08L33/08 , C08L101/14 , C08F220/06 , C08F2222/1026
Abstract: The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution in a surrounding heated gas phase in a reactor comprising a gas distributor (3), a reaction zone (5) and a fluidized bed (27), the gas leaving the reactor is treated in a condenser column (12) with an aqueous solution, the treated gas leaving the condenser column (12) is recycled at least partly to the fluidized bed (27), wherein the gas leaving the condenser column (12) comprises from 0.05 to 0.3 kg steam per kg dry gas and the steam content of the gas entering the gas distributor (3) is less than 80% of the steam content of the gas leaving the condenser column (12).
Abstract translation: 本发明涉及通过在包括气体分配器（3），反应区（5）和流化床（27）的反应器中聚合在周围加热气相中的单体溶液的液滴来生产吸水性聚合物颗粒的方法 ），离开反应器的气体在具有水溶液的冷凝器塔（12）中处理，离开冷凝器塔（12）的处理气体至少部分地再循环到流化床（27），其中离开冷凝器的气体 塔（12）包含0.05至0.3kg蒸汽/ kg干燥气体，并且进入气体分配器（3）的气体的蒸汽含量小于离开冷凝塔（12）的气体蒸汽含量的80％。
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公开(公告)号：US20160199528A1
公开(公告)日：2016-07-14
申请号：US14912623
申请日：2014-08-18
Applicant: BASF SE
Inventor： Markus Tönnessen , Thomas Daniel , Tobias Bottelberger , Stephan Bauer
Abstract: The present invention relates to a feminine hygiene absorbent article comprising water-absorbing polymer particles having a mean sphericity (SPHT) from 0.8 to 0.95 obtainable by spray polymerization of a monomer solution or suspension, wherein the intake ratio of the feminine hygiene absorbent article is less than 0.27.
Abstract translation: 本发明涉及一种女性卫生吸收制品，其包含通过单体溶液或悬浮液的喷雾聚合获得的平均球形度（SPHT）为0.8至0.95的吸水性聚合物颗粒，其中女性卫生吸收制品的吸收比例较小 大于0.27。
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公开(公告)号：US11591424B2
公开(公告)日：2023-02-28
申请号：US16913170
申请日：2020-06-26
Applicant: BASF SE
Inventor： Stephan Bauer , Tina Mark , Lydia König , Yvonne Hagen , Thomas Daniel
IPC: A61L15/60 , C08F220/06 , A61L15/42 , A61F13/53 , A61F13/534 , A61L15/24 , C08F2/06 , C08F222/10
Abstract: A process for producing water-absorbing polymer particles by suspension polymerization and thermal surface postcrosslinking, wherein the 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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