Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB6809/75Aexternal-prioritypatent/GB1541014A/en
Application filed by Flecto Coatings LtdfiledCriticalFlecto Coatings Ltd
Publication of DK190677ApublicationCriticalpatent/DK190677A/da
3-aryl-3-heteroaryl-(eller 3,3-bis(heteroaryl) ) phthalider til anvendelse som farvepraekursorer og fremgangsmaade til fremstilling af saadanne praekursorer