ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,528,789, issued on Jan. 20, was assigned to SUN CHEMICAL B.V. (Weesp, Netherlands).
"Isoindoline derivatives" was invented by Thomas Ruch (Basel, Switzerland), Patrick Holzhueter (Zell im Wiesental, Germany), Gerardus Dekeyzer (Schweizerhalle, Switzerland) and Roman Lenz (Liestal, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "An isoindoline derivative of formula wherein X is N, C-CN or C-COR2; Y is a radical having an acidic group or a basic group; R1 is independently from one another halogen or C1-C4-alkyl, said alkyl is unsubstituted or substituted with halogen; R2 is C1-C4-alkyl, said alkyl is unsubstituted or substituted with halogen; a...