Patent · US Active

Method for producing absorbent articles comprising water-absorbing resin

US12226296B2 · kind B2 · utility

0Cited by

6References

12Claims

0Family size

Assignee

The Procter & Gamble Company · US

Inventors

Carolin Borgmann · Frankfurt, DE
Heike Opper · Bad Soden, DE
Arsen Arsenov Simonyan · Schwalbach, DE
Yoshiro Mitsukami · Himeji, JP
Keisuke Kikuchi · Himeji, JP

Key dates

Filing date	Mar 18, 2022
Grant date	Feb 18, 2025
Priority date	—
Expiry date	Aug 17, 2043

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2220/68
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

Provided is a method for producing an absorbent article comprising a water-absorbing resin having an excellent initial water absorption speed under load even substantially without adding a liquid permeability enhancer.The method steps for producing the water-absorbing resin includes the step of polymerizing a monomer while adding certain polyalkylene glycol thereto so as to generate, during or after the polymerization, a crosslinked hydrogel polymer containing the polyalkylene glycol of a specific molecular weight, wherein the crosslinked hydrogel polymer has a centrifuge retention capacity within a given range and a final water-absorbing resin to be obtained has various physical properties (CRC, AAP, SFC, FSR) being within given ranges.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.