公开(公告)号：US12196660B2

公开(公告)日：2025-01-14

申请号：US16968225

申请日：2019-02-18

Applicant: BASF SE

Inventor： Markus Toennessen ,  Marc Haefner ,  Karsten Kraemer ,  Christophe Bauduin ,  Thomas Daniel

IPC: G01N15/08

Abstract: A method of measuring indices in superabsorbents, by initially charging excess aqueous solution or dispersion, swelling the superabsorbent in the initially charged aqueous solution or dispersion while stirring, dissolving or dispersing a component A in the aqueous solution or dispersion, measuring the enrichment of component A in the aqueous solution or dispersion during the swelling of the superabsorbent, using the enrichment of component A in the aqueous solution or dispersion to measure the time-dependent swelling characteristics and using these to determine the swelling constant k or the characteristic swell time τ, the index being dependent on the permeability of the superabsorbent, and ascertaining the index by means of a correlation measured beforehand between swelling constant k and index or characteristic swell time τ and index.

公开(公告)号：US20210033516A1

公开(公告)日：2021-02-04

申请号：US16968225

申请日：2019-02-18

Applicant: BASF SE

Inventor： Markus Toennessen ,  Marc Haefner ,  Karsten Kraemer ,  Christophe Bauduin ,  Thomas Daniel

IPC: G01N15/08

Abstract: A method of measuring indices in superabsorbents, by initially charging excess aqueous solution or dispersion, swelling the superabsorbent in the initially charged aqueous solution or dispersion while stirring, dissolving or dispersing a component A in the aqueous solution or dispersion, measuring the enrichment of component A in the aqueous solution or dispersion during the swelling of the superabsorbent, using the enrichment of component A in the aqueous solution or dispersion to measure the time-dependent swelling characteristics and using these to determine the swelling constant k or the characteristic swell time T, the index being dependent on the permeability of the superabsorbent, and ascertaining the index by means of a correlation measured beforehand between swelling constant k and index or characteristic swell time T and index.

公开(公告)号：US20170312148A1

公开(公告)日：2017-11-02

申请号：US15520092

申请日：2015-10-14

Applicant: BASF SE

Inventor： Katarzyna Dobrosielska-Oura ,  Christophe Bauduin ,  Markus Tönnessen ,  Mark Elliott ,  Markus Vogt ,  Thomas Daniel ,  Norbert Herfert ,  Marc Haefner ,  Alexandra Faubel

IPC: A61F13/537 ,  A61L15/60 ,  A61L15/22 ,  A61F13/539 ,  A61F13/15 ,  A61F13/534 ,  A61F13/53

CPC classification number: A61F13/53717 ,  A61F13/15203 ,  A61F13/53 ,  A61F13/539 ,  A61F2013/15406 ,  A61F2013/530591 ,  A61F2013/5349 ,  A61F2013/5395 ,  A61L15/225 ,  A61L15/60

Abstract: The present invention relates to a fluid-absorbent article, comprising a fluid-absorbent core, comprising from 0 to 90% by weight fibrous material and from 10 to 100% by weight water-absorbent polymer particles having a mean sphericity (SPHT) from 0.8 to 0.95, based on the sum of water-absorbent polymer particles and fibrous material;and an acquisition-distribution layer between having a three dimensional apertured structure having a femal side (5) and a male side (6), wherein the femal side presents a multiplicity of openings extending in the form of through holes in the direction of a lower surface of the same structure being the male side, wherein the quantity of the water absorbent polymer particles within the fluid absorbent core is at least 3 g.