US Patent Issued to HERCULES on March 31 for "Hydrophobically-modified associative thickener polymers process for the preparation and uses thereof" (Delaware, Pennsylvania Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,181, issued on March 31, was assigned to HERCULES LLC (Wilmington, Del.).

"Hydrophobically-modified associative thickener polymers process for the preparation and uses thereof" was invented by Kelly Anne Brush (Newark, Del.), Venkataram Krishnan (Avondale, Pa.), Zeena Kottukapally Cherian (Exton, Pa.) and Todd A. Brugel (Wilmington, Del.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a hydrophobically-modified associative thickener polymer prepared from a reaction mixture comprising a) a poloxamer tri-block copolymer of the formula (I):b) at least one active hydrogen-containing compound c) a gem-polyhalide with an alkali hydroxide; or ...