Gelled biopolymer based foam

US7674837B2 · kind B2 · utility

Assignee

• FMC Biopolymer AS · NO

Inventors

• Olav Gaserod · Steinberg, NO
• Peder Oscar Andersen · Oslo, NO
• Rolf Myrvold · Sandvika, NO

Key dates

• Filing date: Sep 2, 2004
• Grant date: Mar 9, 2010
• Expiry date: Jan 22, 2025

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61Q17/005
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Gelled biopolymer based foams are disclosed. The gelled foams comprise a cross-linked biopolymer, preferably alginate; optionally, a foaming agent such as hydroxy propyl methyl cellulose; and a plasticizer, preferably glycerin sorbitol, or a mixture thereof, that forms the predominant portion of the gelled foam. The foams are soft and pliable and have high absorbency. They are used as wound dressing materials, controlled release delivery systems, cell culture, barrier media for preventing tissue adherence, and bioabsorbable implants. They also have various personal care applications, especially in oral hygiene, and can be used in food applications.