Patent ID: 6652876
Filing Date: 2003-11-25
Classification: A61K,A61P,Y10T

Abstract:
An active matrix substance patch for controlled delivery of nonsteroidal antirheumatics to the skin, comprising a flexible cover layer and a water insoluble, pressure sensitive adhesive active substance matrix, wherein said adhesive matrix is free from mineral oils and tackifier resins and is composed ofa) from 25 to 90% by weight of synthetic framework polymers based on polyisobutylene, b) from 5 to 40% by weight of amorphous poly-&agr;-olefin, c) from 10 to 60% by weight of an insoluble hydrophilic filler having an average particle size of less than 100 &mgr;m, and d) from 0.001 to 20% by weight of a drug.