Medical adhesive material for sweat-resistant dressings etc.

摘要

A medical self-adhesive mass has a water vapour permeability of at least 10,000 g/m<2>/24h (measured on a self-adhesive film weighing 30 g/m<2>) and an excellent adhesiveness both on dry and perspiration-wet skin. The mass is characterised in that it contains a copolymer synthesised from components (a) 50 to 95 % by weight, preferably 70 to 90 % by weight, of one or several alkyl esters of acrylic and/or methacrylic acid with 4 to 12 C atoms in the alkyl residue; (b) 5 to 50 % by weight, preferably 10 to 30 % by weight, of a vinyl carboxylic acid, with respect to the copolymer, and in that it is mixed with additional components (c) 25 to 90 % by weight, preferably 50 to 80 % by weight of a tertiary or quaternary ammonium group-containing hydrophilic emulsifier; (d) 15 to 60 % by weight, preferably 20 to 40 % by weight, of a hydrophilic, polyoxyalkylene group-containing, amine group-free emulsifier; (e) 1 to 20 % by weight preferably 3 to 15 % by weight of a polyvinyl acid; (F) 1 to 15 % by weight, preferably 3 to 10 % by weight, of a tackifying resin; and (g) 0.05 to 5 % by weight, preferably 0.1 to 2 % by weight, of a cross-linking agent.