US Patent Issued to Rohm and Haas on Feb. 24 for "Aqueous dispersion opacifying pigment-binder hybrid polymer particles" (Pennsylvania Inventors)

ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,584, issued on Feb. 24, was assigned to Rohm and Haas Co. (Collegeville, Pa.).

"Aqueous dispersion opacifying pigment-binder hybrid polymer particles" was invented by Jonathan DeRocher (Coopersburg, Pa.), Antony K. Van Dyk (Blue Bell, Pa.) and Qing Zhang (Collegeville, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a composition comprising an aqueous dispersion of opacifying pigment-binder hybrid polymer particles and a dispersant functionalized with a sulfur acid monomer absorbed to opacifying pigment particles. The composition of the present invention is useful for improving wet-hide performance in paints."

Th...