Patent · US Active

Absorbent structures comprising coated super-absorbent polymer particles

US8791320B2 · kind B2 · utility

2Cited by

34References

6Claims

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	Nov 8, 2007
Grant date	Jul 29, 2014
Priority date	—
Expiry date	Jun 8, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/699
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.