公开(公告)号：US10682435B2

公开(公告)日：2020-06-16

申请号：US15552844

申请日：2016-02-17

Applicant: BASF SE

Inventor： Tina Mark ,  Thomas Daniel ,  Stefan Molter ,  Erich Lutz

IPC: C08F2/14 ,  A61L15/60 ,  C08F2/18 ,  C08F220/06 ,  C08F222/38

Abstract: A process for producing water-absorbing polymer particles by suspension polymerization, wherein the polymerization is conducted in the presence of dissolved oxygen.

公开(公告)号：US20180126032A1

公开(公告)日：2018-05-10

申请号：US15564212

申请日：2016-03-24

Applicant: BASF SE

Inventor： Tina Mark ,  Thomas Daniel ,  Erich Lutz ,  Stefan Molter

IPC: A61L15/60 ,  A61L15/22 ,  C08F265/06 ,  C08F6/18 ,  C08L101/14 ,  C08L51/00

CPC classification number: A61L15/60 ,  A61L15/22 ,  C08F6/18 ,  C08F265/04 ,  C08F265/06 ,  C08J3/12 ,  C08J2300/14 ,  C08L51/003 ,  C08L101/14 ,  C08F265/02 ,  C08F220/06 ,  C08F222/385

Abstract: A process for agglomerating superabsorbent particles, wherein polymer particles having a particle size of 250 μm or less are dispersed in a hydrophobic organic solvent, the dispersed polymer particles are mixed with an aqueous monomer solution, the total amount of water applied to the dispersed polymer particles being at least 100% by weight, based on the dispersed polymer particles, and the monomer solution is polymerized.

公开(公告)号：US20170266640A1

公开(公告)日：2017-09-21

申请号：US15532153

申请日：2015-11-24

Applicant: BASF SE

Inventor： Tina Mark ,  Thomas Daniel ,  Erich Lutz ,  Stefan Molter ,  Anna Kowalski

IPC: B01J20/26 ,  A61L15/60 ,  A61F13/53 ,  B01J20/30 ,  C08J3/24 ,  C08F20/06 ,  A61L15/24

CPC classification number: B01J20/265 ,  A61F13/53 ,  A61F2013/530226 ,  A61L15/24 ,  A61L15/60 ,  B01J20/3085 ,  C08F2/18 ,  C08F20/06 ,  C08J3/245 ,  C08J2333/02 ,  C08F220/06 ,  C08F222/385 ,  C08F2222/1026

Abstract: A process for producing water-absorbing polymer particles by suspension polymerization and thermal surface postcrosslinking, wherein the agglomerated 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：US10857256B2

公开(公告)日：2020-12-08

申请号：US15564215

申请日：2016-03-29

Applicant: BASF SE

Inventor： Tina Mark ,  Thomas Daniel ,  Erich Lutz

IPC: C08J3/11 ,  A61L15/22 ,  A61L15/60 ,  C08F6/18 ,  C08F222/02 ,  C08F265/02 ,  C08F265/06 ,  C08J11/02 ,  C08F265/04 ,  C08F222/38 ,  C08L51/00

Abstract: A process for agglomerating superabsorbent particles, wherein polymer particles having a particle size of 250 μm or less are dispersed in a hydrophobic organic solvent, the dispersed polymer particles are mixed with an aqueous monomer solution, the amount of unneutralized monomer applied with the monomer solution being from 0.5% to 80% by weight, based on the dispersed polymer particles, and the monomer solution is polymerized.

公开(公告)号：US11203005B2

公开(公告)日：2021-12-21

申请号：US15532153

申请日：2015-11-24

Applicant: BASF SE

Inventor： Tina Mark ,  Thomas Daniel ,  Erich Lutz ,  Stefan Molter ,  Anna Kowalski

IPC: C08F2/18 ,  B01J20/26 ,  A61L15/60 ,  C08J3/24 ,  A61F13/53 ,  A61L15/24 ,  B01J20/30 ,  C08F20/06

Abstract: A process for producing water-absorbing polymer particles by suspension polymerization and thermal surface postcrosslinking, wherein the agglomerated 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：US20180126030A1

公开(公告)日：2018-05-10

申请号：US15564215

申请日：2016-03-29

Applicant: BASF SE

Inventor： Tina Mark ,  Thomas Daniel ,  Erich Lutz

IPC: A61L15/22 ,  A61L15/60 ,  C08F265/06 ,  C08F222/38 ,  C08L51/00 ,  C08J11/02

CPC classification number: A61L15/22 ,  A61L15/60 ,  C08F6/18 ,  C08F222/385 ,  C08F265/04 ,  C08F265/06 ,  C08J11/02 ,  C08L51/003 ,  C08F265/02 ,  C08F220/06

Abstract: A process for agglomerating superabsorbent particles, wherein polymer particles having a particle size of 250 μm or less are dispersed in a hydrophobic organic solvent, the dispersed polymer particles are mixed with an aqueous monomer solution, the amount of unneutralized monomer applied with the monomer solution being from 0.5% to 80% by weight, based on the dispersed polymer particles, and the monomer solution is polymerized.

公开(公告)号：US20180043051A1

公开(公告)日：2018-02-15

申请号：US15552844

申请日：2016-02-17

Applicant: BASF SE

Inventor： Tina Mark ,  Thomas Daniel ,  Stefan Molter ,  Erich Lutz

IPC: A61L15/60 ,  C08F2/14 ,  C08F2/18

CPC classification number: A61L15/60 ,  C08F2/14 ,  C08F2/18 ,  C08F220/06 ,  C08F222/385

Abstract: A process for producing water-absorbing polymer particles by suspension polymerization, wherein the polymerization is conducted in the presence of dissolved oxygen.

公开(公告)号：US20180030218A1

公开(公告)日：2018-02-01

申请号：US15552833

申请日：2016-02-17

Applicant: BASF SE

Inventor： Tina Mark ,  Thomas Daniel ,  Erich Lutz ,  Stefan Molter ,  Anna Kowalski

IPC: C08J3/24 ,  C08F6/16 ,  A61L15/24 ,  C08F6/18 ,  C08F120/06 ,  A61L15/60

CPC classification number: C08J3/245 ,  A61L15/24 ,  A61L15/42 ,  A61L15/60 ,  C08F2/14 ,  C08F2/18 ,  C08F6/16 ,  C08F6/18 ,  C08F120/06 ,  C08F220/06 ,  C08F2810/20 ,  C08J2333/02 ,  C08L101/14 ,  C08F222/385

Abstract: A process for producing water-absorbing polymer particles by suspension polymerization and thermal surface postcrosslinking, wherein the agglomerated 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 140 to 220° C.