New Covestro PU dispersion for more sustainable textile coatings

Climate protection requires the industry to gradually move away from crude oil and other fossil raw materials and instead use raw materials from renewable sources. Covestro is therefore increasingly focusing on alternative raw materials, including those from biomass. The company offers a new aliphatic polyester carbonate-polyether polyurethane (PU) dispersion for textile coating under the name Impranil CQ DLU, in which around 34% of the carbon contained is of plant origin. Impranil CQ DLU expands the existing range of partially bio-based dispersions for textile coating with a product whose purely petroleum-based variant Impranil DLU is very popular with customers. As the new dispersion has the same outstanding properties as the established product and a high solids content of 55 percent, customers can now replace Impranil DLU with Impranil CQ DLU one-to-one in their manufacturing processes - and thus easily achieve an additional plus in sustainability in textile coating. Sustainability is increasingly becoming a decisive purchasing criterion not only for the industry, but also for brand owners and consumers. This is where CQ stands for ʺCircular Intelligenceʺ. The core idea of the CQ concept is to label Covestro products with a label if the alternative raw material base exceeds a content of 25 percent, as in this case.

The established Impranil DLU, as a raw material of the Insqin technology, already enables aqueous textile coating without the use of solvents. The ecological footprint of such a coating is significantly lower than that of solvent-based systems. ʺWith the Impranil CQ DLU innovation as part of our Impranil CQ portfolio, we are now enabling the textile coating industry to take the next step towards greater sustainability by increasing the use of renewable resources,ʺ says Dr. Torsten Pohl, Head of Global Textile Coatings at Covestro. Impranil CQ DLU is suitable for producing synthetic materials for sporting goods, technical textiles, car interiors and bags, among other things. The properties of coatings based on the new high-performance dispersion include excellent hydrolysis resistance, very good light fastness and high tensile and scratch resistance. The coatings are also characterized by their pleasant feel and good resistance to alkalis. Impranil CQ DLU can be used for both the intermediate coat and the top coat. The dispersion can be applied in various ways: The spectrum ranges from direct or transfer coating to printing processes and microfiber dipping.