US Patent Issued to HERCULES on June 23 for "Hydrophobically-modified associative thickener polymers process for the preparation and uses thereof" (Delaware, Pennsylvania Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,573, issued on June 23, 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 polytetrahydrofuran having a formula (I):b) at least one active hydrogen-containing compound; c) a gem-polyhalide with an alkali hydroxide; or d) a poly...