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OwnerHorst Buerger, Eberhard Taeger +2inventors
InventorsHorst Buerger, Eberhard Taeger, Markus Eilers, Klaus Berghof
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This invention relates to a method for producing proteinaceous shaped articles from globular proteins according to the NMMO method, and to proteinaceous shaped articles themselves that are made from globular proteins according to the NMMO method. According to the invention, a suspension consisting of aqueous NMMO and of these precrosslinked proteins is transferred into a spinning solution, whereby the suspension contains a polysaccharide and/or a polysaccharide is added to the extrusion solution. The spinning solution is extruded into a precipitation bath through a form tool and through an air gap. Afterwards, the shaped article is washed with an aqueous liquid without the use of solvents and is subsequently hardened using known crosslinking reactions. The produced solutions are processed for a diverse product-oriented processing, preferably on the basis of known wet and dry/wet spinning techniques, optionally in conjunction with multi-constituent spinning techniques. The produced solutions can be processed using spin casting or other shaping techniques in order to produce, by these means, e.g. monofil and polyfil filaments, staple fibers, microfibers, nonwovens, foils, membranes, coatings, films or other shaped articles.
A process for producing proteinaceous shaped articles, which comprises converting a suspension of aqueous amine oxide and at least one optionally precrosslinked globular protein into an extrusion solution, the suspension containing a polysaccharide or adding a polysaccharide to the extrusion solution or both, extruding said extrusion solution through shaping means and through an air gap into a coagulation bath and washing the coagulated shaped article.
Dependencies are inferred from the claim text.