Trevira Gmbh

Hoechst Aktiengesellschaft

Hiecgst Aktiengesellshat

Jorg Dahringer

Hans-Tobias Macholdt

Werner Groh

Michael Klanert

Thomas Hesse

Mehmet Demirors

Richard Neuert

WeRNer Groh

Holger Jung

Bernd Blech

Ernst-August Albers

Peter Boening

Gert Claåsen

Werner Stefani

Werner Grasser

Dieter Eichenauer

Achim Heyer

Antonio Notarnicola

Peter Engelhardt

The invention relates to a polymer fibre with improved dispersibility, a method for producing said fibre and the use of said fibre. The polymer fibre according to the invention comprises at least one synthetic polymer and 0.1 and 20 wt. % of a silicone. The polymer forming the fibre forms a solid dispersion medium at room temperature (25&#xb0; C.) for the silicone present in solid form also at room temperature (25&#xb0; C.) which forms the more disperse phase. The polymer fibre according to the invention possesses an improved dispersibility and is therefore suitable for producing aqueous suspensions which are used, for example, in the formation of textile fabrics, e.g. nonwovens.

Polymer fibre having improved dispersibility

The present invention relates to a new bicomponent fiber, a nonwoven fabric comprising said new bicomponent fiber and sanitary articles made therefrom. The bicomponent fiber contains a polyethylene-based resin forming at least part of the surface of the fiber longitudinally continuously and is characterized by a Co-monomer Distribution Constant greater than about 45, a recrystallization temperature between 85&#xb0; C. and 110&#xb0; C., a tan delta value at 0.1 rad/sec from about 15 to 50, and a complex viscosity at 0.1 rad/second of 1400 Pa&#xb7;sec or less. The nonwoven fabric comprising the new bicomponent fiber according to the instant invention are not only excellent in softness, but also high in strength, and can be produced in commercial volumes at lower costs due to higher thoughputs and requiring less energy.

Bicomponent fiber

Electret fibers having improved charge stability are described which are composed of a material which predominantly contains a fiber-forming polymer or polycondensate and 0.01 to 30% by weight (preferably 0.01 to 10, in particular 0.1 to 5%, by weight), based on the weight of the material, of organic or organometallic charge control compounds, as contained in toners for electrophotographic processes, and a process for the production thereof. In addition, textile materials containing these electret fibers are described.

Electret fibers having improved charge stability, process for the

A non-wovens fabric of electret fibers having an improved charge stability and comprising materials which chiefly comprise a fiber-forming addition or condensation polymer and 0.01 to 30% by weight (preferably 0.01 to 10, in particular 0.1 to 5, % by weight), based on the weight of the material, of organic or organometallic charge control agents, wherein the non-woven fabric comprises at least two types of electret fiber which are made of different materials which differ from one another in that they comprise different fiber-forming addition or condensation polymers and if appropriate also different charge control agents is described.

Non-wovens of electret fiber mixtures having an improved charge stability

Aromatic polyamide compositions with improved electrostatic properties, formed structures produced therefrom, and use and production thereof. Described are compositions comprising an aromatic polyamide which is soluble in organic solvents and from 0.01 to 30% by weight, based on the weight of the composition, of an organic or organometallic charge control agent. The compositions can be used for producing formed structures, in particular fibers; these fibers are preferably used for producing webs which can be used for producing dust filters.

Aromatic polyamide compositions with improved electrostatic properties,

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Bobingen, Germany

Jorg Dahringer