公开(公告)号：US20220235152A1

公开(公告)日：2022-07-28

申请号：US17717598

申请日：2022-04-11

Applicant: BASF SE

Inventor： Kristine Hartnagel ,  Thomas Gieger ,  Thomas Daniel ,  Marcus Schroeder ,  Michelle Morano ,  Nathaniel Troy Greene

IPC: C08F2/22 ,  C08K3/011 ,  A61L15/60 ,  B01J20/26 ,  B01J20/28 ,  C08F2/01 ,  C08F2/44 ,  C08F6/14 ,  C08F220/06 ,  C08J3/12 ,  C08J3/24 ,  C08K3/30 ,  C08K5/5317

Abstract: A process for producing superabsorbents, comprising polymerization of a monomer solution and thermal surface postcrosslinking, wherein the monomer solution comprises at least 0.75% by weight of a hydroxyphosphonic acid or salts thereof, calculated on the basis of the total amount of monomer used, and at least 0.09% by weight of aluminum cations, calculated on the basis of the total amount of polymer particles used, is added to the polymer particles before, during or after the thermal surface postcrosslinking.

公开(公告)号：US11325990B2

公开(公告)日：2022-05-10

申请号：US16321638

申请日：2017-08-01

Applicant: BASF SE

Inventor： Kristine Hartnagel ,  Thomas Gieger ,  Thomas Daniel ,  Marcus Schroeder ,  Michelle Morano ,  Nathaniel Troy Greene

IPC: C08F2/22 ,  C08K3/011 ,  A61L15/60 ,  B01J20/26 ,  B01J20/28 ,  C08F2/01 ,  C08F2/44 ,  C08F6/14 ,  C08F220/06 ,  C08J3/12 ,  C08J3/24 ,  C08K3/30 ,  C08K5/5317

Abstract: A process for producing superabsorbents, comprising polymerization of a monomer solution and thermal surface postcrosslinking, wherein the monomer solution comprises at least 0.75% by weight of a hydroxyphosphonic acid or salts thereof, calculated on the basis of the total amount of monomer used, and at least 0.09% by weight of aluminum cations, calculated on the basis of the total amount of polymer particles used, is added to the polymer particles before, during or after the thermal surface postcrosslinking.

公开(公告)号：US12110351B2

公开(公告)日：2024-10-08

申请号：US17717598

申请日：2022-04-11

Applicant: BASF SE

Inventor： Kristine Hartnagel ,  Thomas Gieger ,  Thomas Daniel ,  Marcus Schroeder ,  Michelle Morano ,  Nathaniel Troy Greene

IPC: C08F2/22 ,  A61L15/60 ,  B01J20/26 ,  B01J20/28 ,  C08F2/01 ,  C08F2/44 ,  C08F6/14 ,  C08F220/06 ,  C08J3/12 ,  C08J3/24 ,  C08K3/011 ,  C08K3/30 ,  C08K5/5317

CPC classification number: C08F2/22 ,  A61L15/60 ,  B01J20/261 ,  B01J20/28047 ,  C08F2/01 ,  C08F2/44 ,  C08F6/14 ,  C08F220/06 ,  C08J3/12 ,  C08J3/245 ,  C08K3/011 ,  C08K3/30 ,  C08K5/5317 ,  B01J2220/68 ,  C08J2333/02 ,  C08K2003/3081

Abstract: A process for producing superabsorbents, comprising polymerization of a monomer solution and thermal surface postcrosslinking, wherein the monomer solution comprises at least 0.75% by weight of a hydroxyphosphonic acid or salts thereof, calculated on the basis of the total amount of monomer used, and at least 0.09% by weight of aluminum cations, calculated on the basis of the total amount of polymer particles used, is added to the polymer particles before, during or after the thermal surface postcrosslinking.

公开(公告)号：US20210301040A1

公开(公告)日：2021-09-30

申请号：US16321638

申请日：2017-08-01

Applicant: BASF SE

Inventor： Kristine Hartnagel ,  Thomas Gieger ,  Thomas Daniel ,  Marcus Schroeder ,  Michelle Morano ,  Nathaniel Troy Greene

IPC: C08F2/22 ,  A61L15/60 ,  C08F2/01 ,  C08F2/44 ,  C08K3/011 ,  C08J3/24 ,  C08J3/12 ,  C08F220/06 ,  C08K5/5317 ,  C08K3/30 ,  B01J20/28 ,  B01J20/26 ,  C08F6/14

Abstract: A process for producing superabsorbents, comprising polymerization of a monomer solution and thermal surface postcrosslinking, wherein the monomer solution comprises at least 0.75% by weight of a hydroxyphosphonic acid or salts thereof, calculated on the basis of the total amount of monomer used, and at least 0.09% by weight of aluminum cations, calculated on the basis of the total amount of polymer particles used, is added to the polymer particles before, during or after the thermal surface postcrosslinking.