ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,776, issued on June 3, was assigned to SIKA TECHNOLOGY AG (Baar, Switzerland).
"Solvent for aromatic carboxylic or sulfonic acids" was invented by Michael Schlumpf (Stallikon, Switzerland), Andreas Kramer (Zurich, Switzerland) and Urs Burckhardt (Zurich, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for preparing an acid solution by contacting at least one aromatic carboxylic or sulfonic acid with at least one polyether having blocked hydroxyl groups as a solvent. The polyether having blocked hydroxyl groups is not volatile and exhibits a surprisingly high dissolving capacity for the aromatic carboxylic or sulfonic acid. The aci...