公开(公告)号：EP2190393A1

公开(公告)日：2010-06-02

申请号：EP08804075.3

申请日：2008-09-12

Applicant: BASF SE

Inventor： HERFERT, Norbert ,  FEISE, Hermann Josef ,  WOLF, Hanno Rüdiger

IPC: A61F13/15 ,  A61L15/60

CPC classification number: A61F13/15617 ,  A61F13/15764

Abstract: Superabsorbents are metered by a process using a screw conveyor, wherein the superabsorbent is selected, or treated with a cohesion control agent, to have an uncon- fined yield strength of from 0.75 to 1.5 kPa at consolidation stress of 6 kPa.

公开(公告)号：EP1833521B1

公开(公告)日：2009-08-05

申请号：EP05820526.1

申请日：2005-12-22

Applicant: BASF SE

Inventor： WOODRUM, Guy T. ,  AZAD, Michael M. ,  HERFERT, Norbert

IPC: A61L15/60

CPC classification number: A61L15/60

Abstract: Superabsorbent polymer particles having a reduced amount of fine-sized particles and methods of producing the superabsorbent polymer particles are disclosed. The particles comprising less than 0.1 % by weight of the particle of a nonreactive film-forming polymer, less than 0.05 % by weight of the particle of a wax, or both.

公开(公告)号：EP2059552A1

公开(公告)日：2009-05-20

申请号：EP07788275.1

申请日：2007-08-07

Applicant: BASF SE

Inventor： HERFERT, Norbert ,  MIATUDILA, Ma-Ikay Kikama ,  MITCHELL, Michael A.

IPC: C08J3/12 ,  C08J3/24 ,  A61L15/60

CPC classification number: C08J3/12 ,  A61L15/60 ,  C08J3/126 ,  C08J3/245 ,  C08J2300/14 ,  C08J2333/06 ,  C08J2377/04

Abstract: Superabsorbent polymer particles having superior absorption capacity and permeability are disclosed. A method of producing the superabsorbent polymer particles by applying a polyamine coating to the particles also is disclosed.

公开(公告)号：EP1846483B1

公开(公告)日：2008-10-22

申请号：EP06724829.4

申请日：2006-01-31

Applicant: BASF SE

Inventor： HERFERT, Norbert ,  MIATUDILA, Ma-Ikay Kikama ,  MITCHELL, Michael A.

IPC: C08J7/06 ,  A61L15/60

CPC classification number: C08J3/126 ,  A61L15/60 ,  C08J3/245 ,  C08J2300/14 ,  C08J2479/02 ,  Y10T428/2998

Abstract: Polyamine-coated superabsorbent polymer particles having improved absorption properties are disclosed. A method of producing the polyamine-coated particles using a low pH superabsorbent polymer also is disclosed.

公开(公告)号：EP1960440A1

公开(公告)日：2008-08-27

申请号：EP06819855.5

申请日：2006-11-30

Applicant: BASF SE

Inventor： WENDKER, Martin ,  HERFERT, Norbert ,  MCCORMACK, Paul Walter

IPC: C08F8/00 ,  A61L15/60

CPC classification number: A61L15/60 ,  C08F8/00 ,  C08F2800/20 ,  C08F2810/20 ,  C08L33/06 ,  C08F220/06

Abstract: A process for preparing water-absorbing polymers by polymerizing a monomer solution comprising at least one ethylenically unsaturated monomer which bears acid groups and may be at least partly neutralized, from 0.01 to 0.5% by weight of at least one crosslinker, based on the monomer, wherein the monomer solution is polymerized and the resulting polymer is aftertreated with from 0.05 to 0.25% by weight of at least one postcrosslinker, based on the polymer, where the postcrosslinker is not a polyol, and from 0.05 to 0.5% by weight of at least one polyvalent cation, based on the polymer.