US Patent Issued to ASAHI KASEI on Sept. 9 for "Block polyisocyanate composition, resin composition, resin film and layered body" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,410,277, issued on Sept. 9, was assigned to ASAHI KASEI K.K. (Tokyo).

"Block polyisocyanate composition, resin composition, resin film and layered body" was invented by Masatsugu Higashi (Tokyo), Tomoharu Yoshinuma (Tokyo), Masakazu Yamauchi (Tokyo), Misa Horinouchi (Tokyo) and Kie Shinomiya (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "This blocked polyisocyanate composition contains a block polyisocyanate derived from one or more diisocyanates, an active hydrogen compound, and a blocking agent containing a malonic acid ester. The active hydrogen compound has a number-average molecular weight of 60 to 5,000 and an average of 1.6 to 2.4 functio...