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Covestro Makes Breakthrough in Sustainable PU Coatings for Textiles

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Photo: Covestro’s Impranil Eco range has a renewable content of up to 65 percent.

Polymer producer Covestro has taken another leap forward in sustainability.

The materials manufacturer—formerly known as Bayer MaterialScience—will present advances in its Insqin waterborne polyurethane (PU) technology as well as new products in the Impranil range at next week’s K 2016 plastics trade fair (Oct. 19-26) in Dusseldorf, Germany.

PU base materials are essential in the production of many PU synthetic textiles used in fashion, sports and outdoor apparel and footwear. According to Covestro, PU-coated fabrics developed using Insqin solvent-free technology show the same performance characteristics as materials manufactured using solvent-based products. It can also be embossed directly, cutting costs and allowing manufacturers to bring a bigger range of surface effects to the material.

“We are particularly proud of this new breakthrough in the technology for base material manufacture,” said Nick Smith, global head of textile coatings. “It will further increase the appeal of our waterborne PU material to the textiles industry, that is searching for sustainable materials. It is a wonderful example of a combined development of both new products and textile coating application technology that we carried out in close concert with key customers.”

In addition, Covestro will introduce new PU dispersions that broaden waterborne PU applications, as well a range of water-borne, bio-based ones. Impranil CIL overcomes a common challenge for waterborne chemistry by enabling the production of fine nubuck material, while Impranil DLI aids wrinkle or fold recovery in the coated material, and Impranil Eco includes a renewable content that reaches as high as 65 percent.

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