Patent ID: 9012529
Filing Date: 2015-04-21
Classification: A61L

Abstract:
1. A formulation comprising (a) a chemically crosslinked polymer matrix, obtainable from acrylic prepolymers crosslinkable by means of photopolymerization; and (b) hydrocolloids embedded in the chemically crosslinked polymer matrix; and (c) an additive which improves dynamic water absorption capacity, said additive being a sulfonated copolyester; obtainable by combining the acrylic prepolymers, hydrocolloids, and the additive which improves dynamic water absorption capacity, and heating and processing the mixture through a slot die at a processing temperature of less than 150° C., wherein the mixture has a viscosity of less than 100 Pa*s, at said processing temperature; and crosslinking the acrylic prepolymers by means of photopolymerization by irradiation with UV light.