Abstract
1. 1. The physicochemical characteristics of resinous-asphaltene substances isolated from >450°C vacuum residues of different Azerbaidzhan crude oils been determined; integral structural analysis of molecules of the resins has been carried out. 2. 2. The molecules of the vacuum residue resins are based on compounds with a hybrid structure that are similar in skeleton to the structure of high-boiling aromatic fractions. The resin molecules contain about two polycyclic blocks built from an average of two condensed highly substituted benzene rings and (with the exception of highly paraffinic Sangachal'sk crude oil) four or five naphthenic rings, irrespective of the depth of occurrence and the site of oil production.
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