US Patent Issued to HONSHU CHEMICAL INDUSTRY on Sept. 15 for "Crystal of isosorbide-bis(trimellitate anhydride) and method for producing the same" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,429, issued on Sept. 15, was assigned to HONSHU CHEMICAL INDUSTRY Co. LTD. (Tokyo).

"Crystal of isosorbide-bis(trimellitate anhydride) and method for producing the same" was invented by Kazuhisa Yajima (Wakayama, Japan) and Ryota Imai (Wakayama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An object is to provide a crystal of isosorbide-bis(trimellitate anhydride) having high purity and suitable as a resin raw material. As a solution, provided is a crystal of isosorbide-bis(trimellitate anhydride), particularly, a crystal of isosorbide-bis(trimellitate anhydride) having a melting endothermic peak in a specific range as obtained by different...