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Abstract

A medical pressure sensitive adhesive mass having a moisture vapor transmission of at least 10,000 g/m.sup.2 /24.h (measured with a pressure sensitive adhesive film having a weight of 30 g/m.sup.2) and an excellent adhesion to both dry skin and that is moist due to perspiration, comprising: A) a copolymer synthesized from components comprising: 1) 50 to 95%-wt., preferably 70 to 90%-wt., based on the weight of the copolymer, of one or several alkyl esters of acrylic and/or methacrylic acid have 4 to 12 C-atoms in the alkyl residue; and 2) 5 to 50%-wt., preferably 10 to 30%-wt., based on the weight of the copolymer, of a vinylcarboxylic acid, B) 25 to 90%-wt., preferably 50 to 80%-wt., of a hydrophilic emulsifier comprising tertiary or quaternary ammonium groups, C) 15 to 60%-wt., preferably 20 to 40%-wt., of a hydrophilic polyoxyalkylene groups-containing emulsifier which is free from amino groups, D) 1 to 20%-wt., preferably 3 to 15%-wt., of a polyvinylcarboxylic acid, E) 1 to 15%-wt., preferably 3 to 10%-wt., of a tackifying resin, and F) 0.05 to 5%-wt., preferably 0.1 to 2%-wt., of a cross-linking agent. The medical pressure sensitive adhesive mass is useful as sweat insensitive occlusive dressing, highly permeable wound dressings and medical adhesive tapes.

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