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+.

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.

公开(公告)号：US09914112B2

公开(公告)日：2018-03-13

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

IPC: B01J20/26 ,  C08F2/01 ,  C08F6/00 ,  C08F2/34 ,  B01J20/28 ,  B01J20/30 ,  C08L33/08 ,  C08L33/02 ,  C08L101/14

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).

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.

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

IPC: C08J3/24 ,  B01J20/28 ,  A61L15/60 ,  A61L15/22 ,  A61L15/42 ,  B01J20/26 ,  C08J9/00

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。

公开(公告)号：US08618206B2

公开(公告)日：2013-12-31

申请号：US13792529

申请日：2013-03-11

Applicant: BASF SE

Inventor： Thomas Daniel ,  Christophe Bauduin ,  Norbert Herfert

IPC: C08F8/42 ,  C08F220/00 ,  C08K3/34

CPC classification number: B01J20/321 ,  C08F220/06 ,  C08F222/1006 ,  C08J3/24

Abstract: A process for producing water-absorbing polymer particles with low caking tendency and high absorption under pressure, comprising polymerization of a monomer solution or suspension, drying of the resulting polymer gel, grinding, classifying, thermal surface postcrosslinking and coating with silicon dioxide, wherein the water-absorbing polymer particles have been coated, before, during or after the surface postcrosslinking with aluminum cations.

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.

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

IPC: A61F13/53 ,  A61L15/24 ,  A61L15/60

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.

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.

公开(公告)号：US10806640B2

公开(公告)日：2020-10-20

申请号：US15471281

申请日：2017-03-28

Applicant: BASF SE

Inventor： Norbert Herfert ,  Somjate Sonkaew ,  Thomas Daniel ,  Tanyatorn Sitkhunthod

IPC: A61F13/53 ,  A61L15/22 ,  A61L15/24 ,  A61L15/60 ,  A61L15/58

Abstract: An absorbent core and an absorbent article respectively with improved properties, especially rewet performance, are disclosed. The absorbent core has at least two layers, wherein each layer comprising from 0 to 10% by weight fibrous material and from 90 to 100% by weight water-absorbent polymer particles, based on the sum of water-absorbent polymer particles and fibrous material. The surface-postcrosslinked water absorbent polymer particles within the upper layer have a sphericity of at least 0.89 and a CRC of at least 34 g/g. Preferably the water-absorbent polymer particles have a sphericity of at least 0.89 and the sum of the CRC and AUL (0.3 psi, 21 g cm−2) (EDANA 442.2-02) of the water absorbent polymer particles is at least 65 g/g.