Process for making thin-wet absorbent foam materials for aqueous body fluids

US5652194A · kind A · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• John Collins Dyer · Cincinnati, US
• Thomas Allen DesMarais · Cincinnati, US
• Keith Joseph Stone · Lancaster, US
• Paul Seiden · Cincinnati, US
• Stephen Allen Goldman · Wyoming, US
• Herbert L. Retzsch · Hamilton, US

Key dates

• Filing date: Nov 18, 1994
• Grant date: Jul 29, 1997
• Expiry date: Nov 18, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2207/12
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Relatively thin, collapsed, i.e. unexpanded, polymeric foam materials that, upon contact with aqueous body fluids, expand and absorb such fluids, are disclosed. A process for consistently obtaining such relatively thin, collapsed polymeric foam materials by polymerizing a specific type of water-in-oil emulsion, commonly known as High Internal Phase Emulsions or "HIPE", is also disclosed.