Absorbent gelling material comprising a dry mixture of at least two types of hydrogel-forming particles and method for making the same

US5714156A · kind A · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Mattias Schmidt · Idstein, DE
• Manfred Plischke · Rheinböllen, DE
• Stephen Allen Goldman · Wyoming, US

Key dates

• Filing date: Jan 6, 1997
• Grant date: Feb 3, 1998
• Expiry date: Jan 6, 2017

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F13/53
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention relates to an absorbent gelling material comprising a dry mixture of at least a first type of hydrogel-forming particles and a second type of hydrogel-forming particles. The absorbent gelling material in accordance with the invention is characterized in that the first type of hydrogel-forming particles has an Absorption Against Pressure value which is higher than the Absorption Against Pressure value of the second type of hydrogel-forming particles, the weight of the second type of hydrogel-forming particles forming at least 10% of the combined weight of the first and second type of hydrogel forming particles. The invention also relates to a method for making such material.