US Patent Issued to MITSUBISHI CHEMICAL on May 27 for "Polyvinyl alcohol-based resin, method for producing polyvinyl alcohol-based resin, dispersing agent and dispersing agent for suspension polymerization" (Japanese Inventors)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,424, issued on May 27, was assigned to MITSUBISHI CHEMICAL Corp. (Tokyo).

"Polyvinyl alcohol-based resin, method for producing polyvinyl alcohol-based resin, dispersing agent and dispersing agent for suspension polymerization" was invented by Junki Fukuda (Tokyo) and Yoshihito Yamauchi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a polyvinyl alcohol-based resin, wherein when the polyvinyl alcohol-based resin is made into a 0.1 wt % aqueous solution, an absorbance (X) at a wavelength of 320 nm in an ultraviolet absorption spectrum thereof is 0.3 or more, and a ratio (Y/X) of an absorbance (Y) at a wavelength ...