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

Thueringisches Institut F{umlaut Over ())}{umlaut Over (})}r Textil-und Kunstsoff-forschung E.v.

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

Epc Engineering Consulting Gmbh

Klaus Heinemann

Ralf-Uwe Bauer

Sabine Riede

Jens Henkel

Rainer Schaller

Eberhard Taeger

Erich Meusel

Wolfgang Mueller

Frank Schubert

Mario Schrödner

Thomas Welzel

Rüdiger Strubl

Mario Schrodner

Ralf-Peter GOTTLÖBER

Heinz Meierkord

Jürgen Musch

Axel Nechwatal

Wolfgang Müller

Uwe Reinicke

Nicole Maczjewski

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

The invention relates to a method for producing novel reactive organic compounds containing poly-DOPO and having a higher phosphorus content than known comparable DOPO (9,10-dihydro-9-oxa-10-phospha-phenenthrene-10-oxide) adducts, and to the use thereof for flameproofing thermoplastic polymers, such as polyesters and polyamides. The same flameproofing effect is achieved with smaller additive quantities than previously, thus reducing the influence of the physical, especially textile-physical properties of the polymers. The adducts containing poly-DOPO are formed by reacting DOPO with acetylenes carrying reactive groups, in the presence of a catalyst.

Method for producing organic compounds containing poly-DOPO, and the use of the same

This invention relates to a method for producing and processing polyester block copolymers, in particular, polyester side-chain grafted, rigid side-chain and/or semi-rigid side-chain polymers. According to the invention, the monomeric units of rigid side-chain and/or semi-rigid side-chain polymers are, preferably in the melt, polycondensated together with monofunctionalized and/or difunctionalized, cyclic dicarboxylic acid anhydrides to form polymers having anhydride terminal and/or side groups. The formed polyester anhydrides are reacted with the hydroxyl groups and/or with the ester groups of meltable linear polyesters in order to form side-chain grafted, rigid side-chain and/or semi-rigid side-chained polymers and, together with meltable polyesters, they form molecularly reinforced blends. These blends can be shaped into filaments or fibers having a high orientation of the reinforcing polymer or they serve as compatibility mediators in blends consisting of a polyester matrix and of rigid side-chain and/or semi-rigid side-chain polymers. The filaments are used, in particular, in technical fields or in the carpet industry.

Method for producing meltable polyesters

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Rudolstadt, Germany

Klaus Heinemann