Patent ID: 9180103
Filing Date: 2015-11-10
Classification: A61K,A61L,A61P

Abstract:
1. A transdermal or topical active ingredient patch having a nonocclusive backing layer which consists of a textile material, a matrix formed from one or more polymer layers, with at least one active pharmaceutical ingredient in one or more of the layers, wherein the structure-forming base polymers of the layer or layers of the matrix layer which makes contact with the skin on application are nonocclusive or minimally occlusive and are pressure-sensitive adhesives and in at least one of the polymer layers there is a second polymer dispersed, which is immiscible or very minimally miscible with the base polymer and has a low water vapor permeability, which is polyisobutylene, a styrene-isoprene-styrene block polymer or a styrene-butadiene-styrene block polymer, the fraction of dispersed particles of the second polymer being between 7 and 40%, whereby said patch has a water vapor permeability of between 50 and 600 g/(m2×24 h).