Basf Corporation

Basf Aktiengesellschaft

Dominick A Burlone

Charles F Helms, Jr

Carol W Morgan

Otto M Ilg

Matthew B Hoyt

John A Hodan

Thomas Kessler

Richard Kotek

J&uuml;rgen Hofmann

Randall A Sferrazza

Walter Gotz

James L Huff

Terry D Roberts

Fang A Wang

Ronald G Morrow

Herman Brandt

Dean R Gadoury

Karen L Johnson

Phillip E Wilson

Gerry A Hagen

George M Kent

Stephen E Dorris

Heinz Berbner

Hans D Zettler

Karl Ott

Keith V Blankenship

Olli P Tuominen

Gernot Herbst

William Theuer

Olli-Pekka Tuominen

Continuous anionic polymerization and melt-spinning of a polycaprolactam includes forming a reaction mixture by bringing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator into contact with one another, and then subjecting the reaction mixture to anionic polymerization reaction conditions in the reactor zone to obtain a molten polycaprolactam. The molten polycaprolactam is the directly (i.e., without intermediate solidification) transferred to, and extruded through, a fiber-forming orifice of a spinneret to form a fiber thereof. A spinneret zone downstream of the reactor zone thus receives the molten polycaprolactam directly from the reactor zone and forms a fiber therefrom by extruding it through the spinneret's fiber-spinning orifice.

Continuous polymerization and direct fiber spinning and systems for accomplishing same

Continuous anionic polymerization and melt-spinning of a polycaprolactam includes forming a reaction mixture by bringing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator into contact with one another, and then subjecting the reaction mixture to anionic polymerization reaction conditions to obtain a molten polycaprolactam. The molten polycaprolactam is the directly (i.e., without intermediate solidification) transferred to, and extruded through, a fiber-forming orifice of a spinneret to form a fiber thereof. One exemplary system to achieve such continuous anionic polymerization and melt-spinning of polycaprolactam includes a mixer for receiving and mixing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator, and a reactor and melt-spinning apparatus downstream of the mixer. The reactor and melt-spinning apparatus most preferably is formed of multiple plates which establish a reactor zone having a flow path for the reaction mixture which is sized and configured to achieve a predetermined residence time of the reaction mixture therein, and a temperature control zone in thermal communication with the reactor plate for controlling the temperature of the reaction plate to achieve anionic polymerization reaction conditions while the reaction mixture is flowing along the defined flow path therein to obtain the molten polycaprolactam. A spinneret zone downstream of the reactor zone thus receives the molten polycaprolactam directly and forms a fiber therefrom by extruding it through the spinneret's fiber-spinning orifice.

This invention provides an apparatus and method for injecting an additive directly into a polymer melt stream. The method comprises supplying a melt flow of a polymeric host material to a die assembly having a thin-plate assembly and injecting at least one additive into at least one predetermined location in a cross-section of the melt flow of the polymeric host material while the melt flow passes through the die assembly. The method achieves uniform dosing of the one or more additives in the extrusion direction in the polymeric host material without homogeneously mixing the one or more additives and the polymeric host material. The apparatus for directly injecting one or more additives into a polymer melt stream comprises a pumping system, a die assembly having a thin-plate assembly, and a distribution line.

Apparatus and method for direct injection of additives into a polymer melt stream

Continuous polymerization and direct fiber spinning and apparatus for accomplishing same

Methods of making multiphase elongate polymeric extrudates by directing additives into a cross-sectional location thereof

Fibers which contain potentially superconducting material are dry spun by the steps of preparing a suspension of potentially superconducting powder in a thickened solvent; preparing a solution of fiber-forming polymer; supplying the suspension and the solution to a spinning apparatus; in the spinning apparatus, arranging the solution and the suspension in a bicomponent arrangement; extruding the arranged solution and suspension from a spinneret as a bicomponent filament; and removing the solvent from the filament.

7-forming, superconducting filaments through bicomponent dry spinning

Fabrics made of melamine fibers are made more comfortable by submerging them for at least 20 minutes in a dyebath or mock dyebath that is at least 70&deg; C.

Comfort melamine fabrics and process for making them

The present invention relates, in general, to fiber spinning and, in particular, to a process of spinning fibers of more than one cross-sectional component and to fibers produced thereby.

Process of making fibers of arbitrary cross section

A superconducting conductor fabricated from a plurality of wires, e.g., fine silver wires, coated with a superconducting powder. A process of applying superconducting powders to such wires, to the resulting coated wires and superconductors produced therefrom.

Superconductor composite

Fabrics made of melamine fibers are made more comfortable by submerging them for at least 20 minutes in a dyebath or mock dyebath that is at least 70.degree. C.

Fiber blend

A spin pack for spinning multiple components includes a distribution device which distributes mutually separated molten polymer streams to a spinneret so that each mutually separated molten polymer stream is accessible at each active spinneret backhole. Intermediate the spinneret and the distribution device, a selection assembly selects which, if any, mutually separated molten polymer stream flows into which backhole.

Apparatus for spinning different colored filaments from a single

Method for spinning multiple colored yarn

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Asheville, NC, United States of America

Dominick A Burlone