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.

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

IPC: C08J3/24 ,  A61L15/24 ,  C08F220/06 ,  A61L15/60 ,  B01J20/26 ,  B01J20/28

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.

公开(公告)号：US20200332038A1

公开(公告)日：2020-10-22

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: C08F220/06 ,  A61L15/60 ,  A61L15/42 ,  A61F13/53 ,  A61F13/534 ,  A61L15/24

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.

公开(公告)号：US20180043052A1

公开(公告)日：2018-02-15

申请号：US15552849

申请日：2016-01-26

Applicant: BASF SE

Inventor： Stephan Bauer ,  Yvonne Hagen ,  Katrin Baumann ,  Christophe Bauduin ,  Thomas Daniel ,  Thomas Pfeiffer

IPC: A61L15/60 ,  B01J19/24 ,  B01J4/00 ,  C08J3/24 ,  C08F2/06 ,  C08F2/34 ,  C08F220/06 ,  B01J19/20 ,  B01J8/44

CPC classification number: A61L15/60 ,  B01J4/002 ,  B01J8/44 ,  B01J19/20 ,  B01J19/2415 ,  B01J2219/185 ,  B01J2219/1943 ,  C08F2/06 ,  C08F2/34 ,  C08F220/06 ,  C08J3/245 ,  C08J2333/02 ,  C08F2222/1013

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 420 to 700 μm, an amount of water-absorbent polymer particles having a particle size of less than 300 μm of less than 5% by weight and an amount of water-absorbent polymer particles having a particle size of more than 800 μm of less than 5% by weight are coated with at least one surface-postcrosslinker and thermal surface-postcrosslinked.

公开(公告)号：US20160280825A1

公开(公告)日：2016-09-29

申请号：US15032333

申请日：2014-10-20

Applicant: BASF SE

Inventor： Stephan Bauer ,  Tina Mark ,  Lydia König ,  Yvonne Hagen ,  Thomas Daniel

IPC: C08F220/06 ,  A61F13/53 ,  A61F13/534 ,  A61L15/60 ,  A61L15/24

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.

Abstract translation: 通过悬浮聚合和热表面后交联制造吸水性聚合物颗粒的方法，其中通过悬浮聚合获得的基础聚合物具有至少37g / g的离心保留能力，并且热表面后交联在100至190℃下进行 。

公开(公告)号：US09434802B2

公开(公告)日：2016-09-06

申请号：US14762026

申请日：2014-01-20

Applicant: BASF SE

Inventor： Stephan Bauer ,  Norbert Herfert ,  Lydia König ,  Yvonne Hagen ,  Xiana Romani Fernandez ,  Marcus Schöppler

IPC: C08F4/00 ,  C08F30/04 ,  C08F2/00 ,  C08F20/26 ,  C08F220/06 ,  A61L15/24 ,  A61L15/60 ,  C08F6/00 ,  C08L33/02

CPC classification number: C08F220/06 ,  A61L15/24 ,  A61L15/60 ,  C08F6/005 ,  C08F6/008 ,  C08L33/02 ,  C08L2201/54 ,  C08L2312/00

Abstract: A process for removing residual monomers from water-absorbing polymer particles by thermally aftertreating the water-absorbing polymer particles in a mixer with rotating mixing tools at a temperature of at least 60° C. in the presence of water and of a surfactant.

Abstract translation: 通过在水和表面活性剂的存在下，在具有旋转混合工具的混合器中，在至少60℃的温度下热吸收吸水性聚合物颗粒，从吸水性聚合物颗粒中除去残余单体的方法。

公开(公告)号：US20150322188A1

公开(公告)日：2015-11-12

申请号：US14762026

申请日：2014-01-20

Applicant: BASF SE

Inventor： Stephan Bauer ,  Norbert Herfert ,  Lydia König ,  Yvonne Hagen ,  Xiana Romani Fernandez ,  Marcus Schöppler

IPC: C08F220/06 ,  A61L15/24

CPC classification number: C08F220/06 ,  A61L15/24 ,  A61L15/60 ,  C08F6/005 ,  C08F6/008 ,  C08L33/02 ,  C08L2201/54 ,  C08L2312/00

Abstract: A process for removing residual monomers from water-absorbing polymer particles by thermally aftertreating the water-absorbing polymer particles in a mixer with rotating mixing tools at a temperature of at least 60° C. in the presence of water and of a surfactant.

Abstract translation: 通过在水和表面活性剂的存在下，在具有旋转混合工具的混合器中，在至少60℃的温度下热吸收吸水性聚合物颗粒，从吸水性聚合物颗粒中除去残余单体的方法。