Dressing material based on a hydrogel, and a process for its production

US4552138A · kind A · utility

Assignee

• BEIERSDORF AG · DE

Inventors

• Wolfgang Hofeditz · Hamburg, DE
• Joachim Hornig · Hamburg, DE
• Werner Karmann · Hamburg, DE

Key dates

• Filing date: Jun 8, 1983
• Grant date: Nov 12, 1985
• Expiry date: Jun 8, 2003

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61L26/0014
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Dressing material of at least one layer of a polymeric, hydrophilic gel and, where relevant, one or more layers of a carrier material as an intermediate and/or covering layer, wherein the gel consists of 40-50% by weight of a polyvinyl alcohol which is crosslinked and acetalized with formaldehyde and is water-insoluble to the extent of at least 90%, 15-30% by weight of water, 15-45% by weight of one or more polyhydric alcohols with 2-6 C atoms and, where relevant, small amounts of additives and/or auxiliaries.