Dyeing textiles in deep and dark shades, such as intense black, vibrant red, or striking turquoise blue, often presents a unique challenge: maintaining adequate wet rubbing fastness. These rich colors are prone to crocking, or color transfer, when subjected to friction in a wet state. This issue can significantly detract from the fabric's appeal and consumer satisfaction. Optimizing wet rubbing resistance in dark shade fabrics is therefore a crucial goal for textile manufacturers.


At NINGBO INNO PHARMCHEM CO.,LTD., we understand these complexities and offer specialized solutions designed to tackle this specific problem. Our Wet Rubbing Fastness Improver Agent SM-2020 is a prime example of such an innovation. This waterborne polyurethane polycation compound has been rigorously developed to provide a remarkable improvement in wet rubbing fastness for challenging dark shades dyed with direct, reactive, or sulfur dyes on cellulose fibers. Users typically observe an increase of 1-2 grades, with results often surpassing 3 grades, significantly boosting the fabric's performance.


The mechanism behind SM-2020’s effectiveness involves the formation of a durable, yet flexible, film on the fiber surface. This film cross-links with active groups on the cellulose fiber, effectively locking in the dye and preventing its detachment during wet friction. Unlike some traditional fixatives, SM-2020 does not compromise the fabric's soft hand-feel, nor does it affect the original shade or light fastness, which is crucial for maintaining the aesthetic integrity of dark colors.


For textile producers seeking to enhance color fastness dark shades textiles or looking for the best wet crocking improver price, NINGBO INNO PHARMCHEM CO.,LTD. provides competitive solutions without sacrificing quality or environmental responsibility. Our products are APEO-free, formaldehyde-free, and comply with EU Standard 100, ensuring both superior performance and ecological safety. Partner with us to master the challenges of dark shade dyeing and deliver fabrics with exceptional wet rubbing resistance.