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.