US Patent Issued to MTISUI CHEMICALS on July 21 for "Polyurethane resin, non-natural leather, and ink" (Japanese Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,738, issued on July 21, was assigned to MTISUI CHEMICALS INC. (Tokyo).

"Polyurethane resin, non-natural leather, and ink" was invented by Tatsuya Yamashita (Ichihara, Japan), Toru Yagi (Ichihara, Japan) and Kazuyuki Fukuda (Ichihara, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A polyurethane resin includes a reaction product of a raw material component containing a polyisocyanate, a macropolyol, a hydrophilic group-containing polyol, and a chain extender. The polyisocyanate is an alicyclic polyisocyanate. The macropolyol contains a plant-derived macropolyol. A biomass degree of the reaction product is 30% or more."

The patent was filed on ...