公开(公告)号：US20160272745A1

公开(公告)日：2016-09-22

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: C08F220/06 ,  B01J20/28 ,  B01J20/26 ,  A61L15/24 ,  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.

Abstract translation: 本发明涉及通过聚合包含小于0.3重量％的过硫酸盐和至少0.05重量％的偶氮引发剂的单体溶液的液滴制备吸水性聚合物颗粒的方法，并且所形成的聚合物颗粒的热后处理少 在流化床中超过100℃，持续60至300分钟。

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。

公开(公告)号：US09073040B2

公开(公告)日：2015-07-07

申请号：US13870599

申请日：2013-04-25

Applicant: BASF SE

Inventor： Rainer Dobrawa ,  Thomas Daniel ,  Uwe Stueven ,  Marco Krüger ,  Francisco Javier Lopez Villanueva ,  Norbert Herfert ,  Karin Flore ,  Stefan Blei ,  Michael A. Mitchell

IPC: B32B5/16 ,  C08L31/02 ,  C08L33/04 ,  B01J20/26 ,  A61L15/60 ,  C08F2/10 ,  C08F220/06 ,  B01J20/30 ,  C08F222/10

CPC classification number: B01J20/26 ,  A61L15/60 ,  B01J20/264 ,  B01J20/3085 ,  C08F2/10 ,  C08F220/06 ,  C08F222/1006 ,  Y10T428/249958 ,  Y10T428/249981 ,  Y10T428/254 ,  Y10T428/2982 ,  Y10T428/31935

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 and flowing the gas cocurrent through the polymerization chamber, wherein the temperature of the gas leaving the polymerization chamber is 130° C. or less, the gas velocity inside the polymerization chamber is at least 0.5 m/s, and the droplets are generated by using a droplet plate having a multitude of bores.

Abstract translation: 本发明涉及一种通过在周围加热气相中聚合单体溶液的液滴并使气体并流通过聚合室流过气体聚合物颗粒的方法，其中离开聚合室的气体的温度为130℃ 聚合室内的气体速度为至少0.5m / s，通过使用具有多个孔的液滴板产生液滴。

公开(公告)号：US20130281594A1

公开(公告)日：2013-10-24

申请号：US13870599

申请日：2013-04-25

Applicant: BASF SE

Inventor： Rainer Dobrawa ,  Thomas Daniel ,  Uwe Stueven ,  Marco Krüger ,  Francisco Javier Lopez Villanueva ,  Norbert Herfert ,  Michael A. Mitchell

IPC: B01J20/26 ,  B01J20/30

CPC classification number: B01J20/26 ,  A61L15/60 ,  B01J20/264 ,  B01J20/3085 ,  C08F2/10 ,  C08F220/06 ,  C08F222/1006 ,  Y10T428/249958 ,  Y10T428/249981 ,  Y10T428/254 ,  Y10T428/2982 ,  Y10T428/31935

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 and flowing the gas cocurrent through the polymerization chamber, wherein the temperature of the gas leaving the polymerization chamber is 130° C. or less, the gas velocity inside the polymerization chamber is at least 0.5 m/s, and the droplets are generated by using a droplet plate having a multitude of bores.

Abstract translation: 本发明涉及一种通过在周围加热气相中聚合单体溶液的液滴并使气体并流通过聚合室流过气体聚合物颗粒的方法，其中离开聚合室的气体的温度为130℃ 聚合室内的气体速度为至少0.5m / s，通过使用具有多个孔的液滴板产生液滴。

公开(公告)号：US20130260988A1

公开(公告)日：2013-10-03

申请号：US13853457

申请日：2013-03-29

Applicant: BASF SE

Inventor： Norbert Herfert ,  Thomas Daniel

IPC: B01J20/22 ,  B01J20/30

CPC classification number: B01J20/223 ,  A61L15/60 ,  B01J20/265 ,  B01J20/3085 ,  C08F8/40 ,  C08F8/42 ,  C08F220/06 ,  C08J3/128 ,  C08J3/245 ,  C08K3/00 ,  C08K3/22 ,  C08K5/00 ,  C08K5/5317 ,  C08K5/5353 ,  C08K2201/013

Abstract: A superabsorbent having surfaces complexed with polyvalent metal ions and which contains at least one phosphonic acid derivative, and the molar ratio between polyvalent metal and phosphonic acid derivative is at most 1.2/n, where n is the number of phosphonic acid groups in the phosphonic acid derivative. The superabsorbent exhibits good stability against discoloration and a surprisingly low caking tendency without any significant impairment of its performance properties.

Abstract translation: 具有与多价金属离子络合的表面并含有至少一种膦酸衍生物的超吸收体，多价金属与膦酸衍生物的摩尔比为1.2以下，n为膦酸中的膦酸基数 衍生物。 超吸收剂表现出良好的抗变色稳定性和令人惊讶的低结块倾向，而其性能特性没有任何显着的损害。

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.

公开(公告)号：US20230364584A1

公开(公告)日：2023-11-16

申请号：US18025945

申请日：2021-09-06

Applicant: BASF SE

Inventor： Norbert Herfert ,  Sukanya Nuasaen ,  Peannapa Arsoon

IPC: B01J20/26 ,  B01J20/28 ,  C08F220/06 ,  C08F222/10 ,  C08K3/22 ,  C08K5/17 ,  C08J3/24 ,  C08J3/075

CPC classification number: B01J20/261 ,  B01J20/28047 ,  B01J20/28004 ,  C08F220/06 ,  C08F222/103 ,  C08K3/22 ,  C08K5/175 ,  C08J3/245 ,  C08J3/075 ,  B01J2220/68 ,  C08K2003/2227

Abstract: The invention relates to a process for producing superabsorbent polymer particles, comprising polymerization of a monomer solution, drying the formed polymer gel, grinding the dried polymer gel, classifying and thermally surface post-crosslinking the polymer particles, wherein the monomer solution comprises a chelating agent and an aluminum salt.

公开(公告)号：US20210290453A1

公开(公告)日：2021-09-23

申请号：US17263673

申请日：2019-07-23

Applicant: BASF SE

Inventor： Hui Ge ,  Norbert Herfert ,  Mark Elliott ,  Michael Mitchell ,  Li Guo Duan

IPC: A61F13/534 ,  A61L15/60

Abstract: Described herein is a fluid-absorbent core including at least two layers, an upper layer and a lower layer, each layer including 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, where within the upper layer (91) is a water absorbent mixture including at least 10% by weight of a first type of water-absorbent polymer particles, water-absorbent polymer particles G, with a vortex of less than 30 s and at least 50% by weight of a second type of water-absorbent polymer particles, water-absorbent polymer particles H, with a CRC of at least 25 g/g. Also described herein is a fluid-absorbent article including the fluid-absorbent core.

公开(公告)号：US10226753B2

公开(公告)日：2019-03-12

申请号：US15746492

申请日：2016-07-21

Applicant: BASF SE

Inventor： Norbert Herfert ,  Wanthip Poomsuwan ,  Thomas Gieger

IPC: B01J20/26 ,  A61L15/60 ,  C08F2/01 ,  C08F2/10 ,  C08F220/06 ,  C09D183/08 ,  C08J3/12 ,  C08L33/02 ,  A61L15/22 ,  B01J19/06 ,  B01J20/30 ,  C08J3/24 ,  C08G77/28

Abstract: The invention relates to a process for producing superabsorbents, comprising the preparation of partly neutralized acrylic acid by the steps (i) preparing an over-neutralized acrylic acid having a degree of neutralization of at least 100.1 mol-% by mixing of an acrylic acid 1 and a base and (ii) preparing a neutralized acrylic acid having a degree of neutralization from 50 to 85 mol-% by mixing of the over-neutralized acrylic acid and an acrylic acid 2, wherein the content of dimeric acrylic acid in the acrylic acid 2 is lower than the content of dimeric acrylic acid in the acrylic acid 1.