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.

公开(公告)号：US20170312148A1

公开(公告)日：2017-11-02

申请号：US15520092

申请日：2015-10-14

Applicant: BASF SE

Inventor： Katarzyna Dobrosielska-Oura ,  Christophe Bauduin ,  Markus Tönnessen ,  Mark Elliott ,  Markus Vogt ,  Thomas Daniel ,  Norbert Herfert ,  Marc Haefner ,  Alexandra Faubel

IPC: A61F13/537 ,  A61L15/60 ,  A61L15/22 ,  A61F13/539 ,  A61F13/15 ,  A61F13/534 ,  A61F13/53

CPC classification number: A61F13/53717 ,  A61F13/15203 ,  A61F13/53 ,  A61F13/539 ,  A61F2013/15406 ,  A61F2013/530591 ,  A61F2013/5349 ,  A61F2013/5395 ,  A61L15/225 ,  A61L15/60

Abstract: The present invention relates to a fluid-absorbent article, comprising a fluid-absorbent core, comprising from 0 to 90% by weight fibrous material and from 10 to 100% by weight water-absorbent polymer particles having a mean sphericity (SPHT) from 0.8 to 0.95, based on the sum of water-absorbent polymer particles and fibrous material;and an acquisition-distribution layer between having a three dimensional apertured structure having a femal side (5) and a male side (6), wherein the femal side presents a multiplicity of openings extending in the form of through holes in the direction of a lower surface of the same structure being the male side, wherein the quantity of the water absorbent polymer particles within the fluid absorbent core is at least 3 g.

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

IPC: B01J20/26 ,  B01J20/28 ,  C08L33/08 ,  B01J20/30

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％。

公开(公告)号：US20130187089A1

公开(公告)日：2013-07-25

申请号：US13792529

申请日：2013-03-11

Applicant: BASF SE

Inventor： Thomas Daniel ,  Christophe Bauduin ,  Norbert Herfert

IPC: B01J20/32

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.

Abstract translation: 一种生产具有低结块倾向和高压吸收的吸水聚合物颗粒的方法，包括单体溶液或悬浮液的聚合，所得聚合物凝胶的干燥，研磨，分级，热表面后交联和用二氧化硅涂覆，其中 吸水聚合物颗粒在与铝阳离子的后交联之前，期间或之后已被涂覆。

公开(公告)号：US20210298962A1

公开(公告)日：2021-09-30

申请号：US17263781

申请日：2019-07-23

Applicant: BASF SE

Inventor： Hui Ge ,  Norbert Herfert ,  Mark Elliott ,  Michael Mitchell ,  Le LI ,  Gao Min Sun

IPC: A61F13/472 ,  A61F13/53 ,  A61L15/60 ,  C08F220/06 ,  A61L15/24

Abstract: Described herein is a feminine hygiene absorbent article, including: (A) an upper liquid-pervious layer, (B) a lower liquid-impervious layer, (C) a fluid-absorbent core between the layer (A) and the layer (B), including 5% to 50% by weight of water-absorbent polymer particles G and not more than 95% by weight of fibrous material, based on the sum of water-absorbent polymer particles G and fibrous material; (D) an optional acquisition-distribution layer between (A) and (C), (E) an optional tissue layer disposed immediately above and/or below (C); and (F) other optional components, where the water-absorbent polymer particles G are obtainable by agglomerating a blend of non-surface post-crosslinked fine water-absorbent polymer particles and surface post-crosslinked fine water-absorbent polymer particles, and drying, grinding, sieving and classifying the agglomerated water-absorbent polymer particles.

公开(公告)号：US20210187479A1

公开(公告)日：2021-06-24

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 ,  A61L15/60 ,  A61L15/24 ,  A61L15/18 ,  B01J20/26 ,  B01J20/30 ,  B01J20/02 ,  C08J3/12 ,  C08J3/24 ,  C08J3/07

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：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.

公开(公告)号：US20220071818A9

公开(公告)日：2022-03-10

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：US20190135993A1

公开(公告)日：2019-05-09

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 ,  C08F6/00 ,  B01J20/28 ,  B01J20/26 ,  A61L15/22 ,  C08F220/06 ,  A61L15/42 ,  C08J9/00 ,  A61L15/60

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：US09944739B2

公开(公告)日：2018-04-17

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: A61L15/22 ,  C08F220/06 ,  C08L33/02 ,  B01J20/28 ,  B01J20/26 ,  A61L15/24 ,  C08F6/00 ,  A61L15/42 ,  A61L15/60

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.