Fabrics made from polyester and polyester/cotton can be difficult to clean when they are soiled with oily or fatty stains. Such stains adhere strongly to the hydrophobic synthetic fibers, which are then only poorly wetted by the washing liquor.
If these fabrics are washed with a detergent containing a soil release polymer, the soil release polyester is adsorbed onto the hydrophobic fibers and forms a hydrophilic film. This prevents the soil from adhering directly to the fibers. Furthermore, the affinity of hydrophobic soils for the hydrophilic film is reduced significantly compared to the untreated fibers. This makes it much easier to remove oily stains from the fabric during subsequent washing.
With the Soil Release Polymer, we developed a solution which meet high sustainability standards and function in several different ways: They remove stains even at low temperatures and short cycles, protect against new soiling, reduce graying and improve wearing comfort by increasing moisture absorption. The new polymer is 80% bio-based and has the same performance compared to the previous synthetic generation.