Thueringisches Institut Fuer Textil-und Kunststoff-forschung E.v.

Thuringisches Institut Fur Textil Und Kunststoff-forschung E. V.

Frank Schubert

Ralf-Uwe Bauer

Sabine Riede

Klaus Heinemann

Mario Schrödner

Thomas Welzel

Rüdiger Strubl

The invention describes electrically conductive shaped bodies with an inherent positive temperature coefficient (PTC), produced from a composition which contains at least one organic matrix polymer (compound component A), at least one submicroscale or nanoscale, electrically conductive additive (compound component B) and at least one phase-change material with a phase-transition temperature in the range from &#x2212;42&#xb0; C. to +150&#xb0; C. (compound component D). The phase-change material is incorporated into an organic network (compound component C). The electrically conductive shaped body with an inherent PTC effect is, in particular, a filament, a fibre, a spun-bonded web, a foam, a film, a foil or an injection-moulded article. The switching point for the PTC behavior is dependent on the type and also the phase-conversion temperature of the phase-change material. By way of example, a self-regulating surface heater in the form of a film, foil and/or textile can be realized in this way.

Electrically conductive shaped body with a positive temperature coefficient

The invention molecularly equips polyester or polyolefin molding compositions in situ with zinc ions before extrusion, enabling direct processing of the molding compositions from the melt even at high temperatures and ensuring a long-term antibacterial action. The inventive molding compositions include at least one polyester polymer or polyolefin polymer and at least one zinc salt-organoligand complex.

Polyester and polyolefin molding compositions having bioactive properties and moldings produced therefrom

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Jena, Germany

Frank Schubert