GreenShield® Fabric Finish receives U.S. patent for nanoparticle-based stain-resistant technology

BigSky Technologies LLC, announced the issuance of the first in a series of patents for their GreenShield® fabric finish technology. GreenShield is a new process for water-, oil-, and stain-repellency that replaces the conventional polymer-based chemicals with particle-based green nanotechnology, reducing the use of fluorochemicals by as much as 10 times.

The proprietary technology covered by the patent represents a new application for biomimicry by truly simulating the natural water repellency in the microscopic roughness of a lotus leaf surface. Undetectable to human touch, the microscopic surface roughness of fabric treated with GreenShield finish allows water and oil to roll off the surface, resulting in superior water- and oil-repellency and stain-resistance. The water-based formulation is safe and environmentally friendly, reduces fluorocarbons by 6-10 times, but at the same time maintains the hand and feel of fabrics, and is permanent with excellent wash-durability.

 “Our goal was always a greener stain-resistant technology,” says Dr. Cathy Fleischer, Managing Partner, BigSky Technologies LLC. “We have been able to scientifically mimic the repellency of the lotus leaf, using 6-10 times fewer fluorocarbons in the process. That’s a first.”

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