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Nolax Ag

Pia Frei

Andreas Dobmann

Judith Nyffeler

A hot-melt formulation useful as a wound dressing comprises a chemically crosslinked polymer matrix obtainable from prepolymers crosslinkable by means of photopolymerization. Hydrocolloids are embedded in the chemically crosslinked polymer, matrix. The formulation is obtainable by combining the prepolymers and hydrocolloids, and heating and processing the mixture through a slot die, wherein the mixture has a viscosity of less than 100 Pa*s and a processing temperature of less than 150&#xb0; C. The prepolymers are crosslinked by means of photopolymerization by irradiation with UV light.

Hot-melt composition comprising hydrocolloids

A hot-melt pressure-sensitive adhesive composition which, as a result of the use of a hydrogenated styrene-butadiene-butylene-styrene block copolymer, has improved properties in respect of immediate adhesion and also the removal of the hot-melt pressure-sensitive adhesive composition from a carrier substrate without leaving a residue, is described.

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Rickenbach, Switzerland

Pia Frei