Medical pressure-sensitive adhesives with high permeability to water vapor and high adhesive force, and plasters provided therewith

US6198017A · kind A · utility

Assignee

• LOHMANN GMBH & CO. KG · DE

Inventors

• Arno Basedow · Bad Vilbel, DE
• Frank Kura · Meerbusch, DE
• Kurt Seeger · Neuwied, DE

Key dates

• Filing date: Mar 1, 1999
• Grant date: Mar 6, 2001
• Expiry date: Mar 1, 2019

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61L15/585
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Medicinal pressure-sensitive adhesives, adhering to both dry and wet skin, characterized by a mixture of PA0 a) 20-50 wt-% of a hydrophilic (meth)acrylate copolymerizate containing tertiary amino groups, PA0 b) 20-50 wt-% of a hydrophobic (meth)acrylate copolymerizate containing carboxyl groups, PA0 c) 10-40 wt-% of one or more mono- or dicarboxylic acids, PA0 d) 0-10 wt-% of a polyol, and PA0 e) 0.02-0.5 wt-% of a cross-linking system reacting with at least one copolymerizate, whereby the sum of components a to e equals 100 wt-%, with a water-vapor permeability of .gtoreq.30,000 g.multidot.m.sup.-2.multidot.24 h.sup.-1, measured on a pressure-sensitive adhesive film with a thickness of 40 .mu.m.