Wash-resistant synthetic textiles

Wash-resistant synthetic textiles (e.g., polyester and polyamide) can be obtained by using organophosphorous-based FRs. 

PERSISTOL HP is a metal salt-free, reactive product for the wash-resistant water-repellent finishing of textiles composed of cellulosic fibres, alone and in blends with synthetics. It can be applied in one bath together with the KAURIT and FIXAPRET types in resin finishing. In oleophobic finishing it is used as an extender to promote the finishing effect. 

On the other hand, small amounts of flame-retardant monomeric units are polymerized directly into the chain molecule of synthetic fibers such as poly(acrylonitrile) and poly(ethylene terephthalate). The flame retardants are bound so strongly into the chain that, in contrast to low-molar-mass substances, they cannot be removed by repeated washing of the textiles. To a limited extent, however, PAN, PET, and PP are also made fire resistant by addition of additives previous to or at the spinning stage. 

Silicones. SUicones are exceeded only by fluorochemicals in the volume used as repeUents for textiles. They are widely used on ceUulosic and synthetic fiber fabrics. SUicones provide water-based stain resistance good durabUity to washing improved tear strength a soft, sUck hand and improved fabric sewabUity. 

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