Patent · US Expired

Absorbent structures comprising coated super-absorbent polymer particles

US7108916B2 · kind B2 · utility

127Cited by

33References

12Claims

0Family size

Assignee

The Procter & Gamble Company · US

Inventors

Bruno Johannes Ehrnsperger · Bad Soden, DE
Heike Opper · Bad Soden, DE
Udo Friedel Schoenborn · Bad Soden, DE

Key dates

Filing date	Jun 30, 2004
Grant date	Sep 19, 2006
Priority date	—
Expiry date	Jun 30, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2991
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

This invention is directed to super-absorbent material, which comprises a super absorbent polymer core that is coated with an organic, polar coating agent, and whereby the particulate super-absorbent material has a contact angle and a corresponding cos CAm (as defined herein), whereby the cos CAm is more than 0.3, and whereby, when said coating agent is in the form of particles, said coating agent particles have a (weight) mean particle size of from 0.001 to 1 micron. The material is useful for absorbent structures and absorbent articles (comprising such structures). The coated super-absorbent material is typically present in said absorbent structure at least at a concentration of 50% by weight of the structure, preferably even 80% or even 90%. The invention also provides a process for making the absorbent material.

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