Solution spinning process for the production of a textile fiber material with a permanent repellent action

Abstract

A solution spinning process for the production of a textile fiber with permanent repellent action includes the steps of preparing a spinnable polymer component and an ambivalent polymer compound which contains a repelling group and a residual group with an affinity for the spinnable polymer component, mixing the ambivalent polymer compound with the spinnable polymer component in a solvent, and spinning the mixture into a fiber, wherein the repelling groups orient themselves in the direction of the surface of the forming fiber and migrate to the surface, while the affine residual groups anchor the ambivalent polymer compound in the spinnable polymer compound as the solvent is driven off.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation application of International application PCT / EP02 / 00318 filed Jan. 15, 2002.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a process for the production of a textile fiber which has a permanent repellent action.[0004]2. Description of the Related Art[0005]Textile materials with repellent properties especially for the repulsion of oil, water, and dirt are known in the state of the art. Thus, EP 0 377 813 describes a canopy top material for motor vehicles, where, to achieve the desired repellent properties, the surface fabric is finished with a repellent agent, specifically in this case with a polymer based on fluoropolymers. Fluorine waxes for clothing textiles are also known; these can be in the form of impregnating sprays, which are sprayed onto the surface of the fibers. The disadvantage, however, is that these repellents wear off over the course of time...

AI Technical Summary

Benefits of technology

The present invention provides a production process for a textile fiber with a permanent repelling action. This is achieved by mixing a spinnable polymer component and an ambivalent polymer compound containing a repelling group and a residual group with an affinity for the spinnable polymer component in a solvent, and spinning the mixture into a fiber. The repelling groups orient themselves in the direction of the surface of the forming fiber and migrate to the surface, while the residual groups anchor the ambivalent polymer compound in the spinnable polymer compound as the solvent is driven off. The fiber produced has the advantage of the ambivalent polymer compound being bonded to the fiber polymer by way of the affine residual group, making it difficult for the repelling group to be rubbed off. The invention can be used to produce textile fiber materials such as monofilaments, multifilaments, fibers, yarns, or flat materials.

Problems solved by technology

It is therefore virtually impossible for the repellent group to be rubbed off, because it would by necessary for the affine residual group to be torn out of the fiber polymer structure at the same time.

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