High strength cellulosic filament its use, and method for the production thereof

Inactive Publication Date: 2014-07-24
GLANZSTOFF BOHEMIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0036]These pigments are used to incorporate desired additional functionalities into the filaments. This may be, for example, flame retardation, a durable coloration, or a matting effect. Yet, for special products, other additives can be used that, for example, provide for extremely good visibility or an extremely good warning effect, electrical conductivity, the absorption of pollutants, or radiographic visibility (e.g. for surgical suture yarns). Generally, all such solids are suited for use as pigments that, under the conditions in the viscose spinning solution, i.e., strongly alkaline and CS2-containing, and in the strongly acidic precipitation bath, will not undergo any undesired changes, especially that they will not go into solution, either partly or entirely. Substances that, in a strongly alkaline environment, are present in a dissolved form and that, only in the acidic precipitation bat

Problems solved by technology

So far, it had not been possible to produce such fine regenerated cellulose filaments with t

Method used

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  • High strength cellulosic filament its use, and method for the production thereof
  • High strength cellulosic filament its use, and method for the production thereof
  • High strength cellulosic filament its use, and method for the production thereof

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Embodiment Construction

[0082]6 parts by weight of 2,2′-oxybis[5,5-dimethyl-1,3,2-dioxaphosphoriane]2,2′disulfide, 6 parts by weight of water, and 0.55 parts by weight of alkyl polyglycol ether phosphoric acid ester are homogenized using a dissolver and ground in an agitator bead mill (Drain, type Perl Mill PML-V / H) with zirconium oxide grinding beads at a temperature of 40-55° C. until the finished dispersion has an x992, related to cellulose. The viscose was filtered 4 times and vented. 1 hour prior to spinning, 3% (related to cellulose) of ethoxylated amine, a modifier causing a sheath structure, was added to the viscose. The viscose was post-ripened to a spinning gamma value of 57. The viscosity during spinning was 80 falling ball seconds. The finished flame retardant dispersion is added to this ready-to-spin viscose.

[0083]The spinnerets used have a spinneret hole diameter of 60 μm. The precipitation bath contains 75 g / 1 of sulfuric acid, 113 g / 1 of sodium sulfate, and 53 g / 1 of zinc sulfate. The preci...

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Abstract

The present invention relates to high-strength, possibly pigment-containing—for example flame-retardant—regenerated cellulosic filaments having improved textile properties, in particular as regards strength and uniformity, to their use for the production of fabrics, and to a method for the production of these filaments.

Description

BACKGROUND OF THE INVENTIONField of the Invention[0001]The present invention relates to high-strength regenerated cellulosic filaments having improved textile properties, in particular as regards strength and uniformity, to their use for the production of fabrics, as well as to a method for the production of these filaments. These high-strength filaments may also contain pigments such as flame-retardant pigments.[0002]Regenerated cellulosic filaments have been known for a long time. They are used particularly for textiles, but in a high-strength form also for technical applications such as tire cords. For the purposes of this invention, the term “regenerated cellulosic fibers” denotes such fibers that are made of a cellulose-containing spinning solution by spinning into a spinning bath (often also referred to as a precipitation bath), the cellulose in the spinning solution being present in the form of a cellulose derivative, in particular as cellulose xanthogenate, while in the prec...

Claims

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Application Information

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IPC IPC(8): D01F2/14
CPCD01F2/14D01F1/04D01F1/07D01F2/00D01F2/06Y10T428/249921Y10T428/2913
Inventor MALINOWSKY, ROBERTNEUNTEUFEL, MARTINGUGERELL, FRANZ
Owner GLANZSTOFF BOHEMIA
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