Stora Enso Oyj

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Lanxess Deutschland Gmbh

Currenta Gmbh & Co. Ohg

André Lehmann

Niklas Garoff

Jens Erdmann

Robert Protz

Hans-Peter Fink

Benno Franz Ulfik

Johannes Ganster

Horst Ebeling

Bert Volkert

Stefanie Nickel

Joachim Beyer

Evgueni Tarkhanov

Johnannes Ganster

The present invention relates to a method for manufacturing precursor yarn comprising lignin, which may be further processed into intermediate carbon fibers and finally also carbon fibers. It also relates to carbon fibers and uses of said fibers. Said method involves applying a water-free spin finish.

Process for the manufacture of a precursor yarn

The present invention relates to a method for producing a multifilament yarn from a melt of a copolymer of polyacrylicnitrile. The method is characterized in that a multifilament yarn is produced by means of pressing a melt of a copolymer through a spinning nozzle and is subsequently stretched at least tenfold. The present invention further relates to a correspondingly produced multifilament yarn.

Method for producing a multifilament yarn

The present invention relates to a method for manufacturing a shaped body comprising lignin which may be further processed into intermediate carbon fibers and finally also carbon fibers. Uses of said fibers are also disclosed. The present invention addresses the problem of lignin leaching into a precipitation bath. The solution to this problem is a novel method for minimizing the loss of lignin through the addition of certain salts into the precipitation bath.

Process for the manufacture of a shaped body

The present invention relates to a method for manufacturing thermally stabilized, non-sticky and stretchable fibers, which may be further processed into intermediate carbon fibers and finally also carbon fibers. Uses of said fibers are also disclosed. Also a highly oriented intermediate carbon fiber is disclosed together with a highly oriented carbon fiber.

Fiber and a process for the manufacture thereof

The invention relates to a method for the production of a precursor for the production of carbon- and activated carbon fibers according to the wet- or air-gap spinning method, in which a solution of lignin and a fiber-forming polymer in a suitable solvent is extruded through the holes of a spinning nozzle into a coagulation bath, the formed thread is stretched and subsequently treated, dried at an elevated temperature and then wound up. The lignin-containing thread is an economical starting material for the production of carbon- and activated carbon fibers.

Method for the production of lignin-containing precursor fibres and also carbon fibres

The invention relates to a method for the production of a precursor for the production of carbon&#x2014;and activated carbon fibers according to the wet&#x2014;or air-gap spinning method, in which a solution of lignin and a fiber-forming polymer in a suitable solvent is extruded through the holes of a spinning nozzle into a coagulation bath, the formed thread is stretched and subsequently treated, dried at an elevated temperature and then wound up. The lignin-containing thread is an economical starting material for the production of carbon&#x2014;and activated carbon fibers.

The invention relates to a method for producing polysaccharide esters or polysaccharide mixed esters, in which a polysaccharide or a modified polysaccharide is converted with at least one esterification reagent and at least one halogenide component, an imidazole compound which is generated in situ being used as catalyst.

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Potsdam, Germany

André Lehmann