ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,641, issued on Jan. 27, was assigned to Solventum Intellectual Properties Co. (Maplewood, Minn.).
"Process for making pressure sensitive adhesive hydrogels" was invented by Kathryn A. Pintar (Minneapolis) and Vinod P. Menon (Woodbury, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A process is disclosed for preparing a pressure sensitive adhesive hydrogel. The process (A) provides an oligomeric precursor, the oligomeric precursor comprising a polyether moiety endcapped with ethylenic unsaturation, the oligomeric precursor being associated with methacrylic acid; (B) provides an ethylenically unsaturated crosslinking agent selected from the grou...