Synthesis of Petroleum Polymer Resin by Catalytic Polymerization of Pyrocondensate and Its Fractions

Abstract

Aims: The main aim of the present paper is the application of bimetallic complexes synthesized based on aluminium, 1.2-dichloroethane and transition metals in the refining of pyrocondensate. Place and Duration of Study: Institute of Petrochemical Processes, Azerbaijan National Academy of Sciences, between January 2011 and September 2012. Methodology: Oligomerization process was carried out in a three-necked flask equipped with mechanical stirrer, reflux condenser and a thermometer. Results: On the basis of the results obtained from the study the optimal conditions of polymerization process of pyrocondensate in the presence of bimetallic catalytic complexes were: concentration of catalyst for oligomerization process of pyrocondencate and its fractions – 0,5% wt., temperature  for pyrocondensate and C6-C8 fraction – 70ºC, temperature for C5 fraction – 60ºC, reaction time for pyrocondensate – 1 hour., C5 and C6-C8 fractions - 40 min. Increasing the molecular weight of petroleum polymer resins synthesized in the presence of bimetallic catalytic complexes from 700 to 1200 resulted in film formation. Conclusion: The best activity of bimetallic catalysts in the oligomerization process of pyrocondensate and its fractions was observed at a ratio Al:Me=8:1, so in that time the concentration of catalyst decreased from 1 % wt. to 0,5 % wt. It was noticed that bimetallic catalysts oligomerized the unsaturated hydrocarbons of pyrocondensate and its fractions and separated benzene-toluene-xylenes fraction and C5 fraction which can used as benzene component with high purity. Also the bimetallic catalytic complex made possible the synthesis of PPR, which can be used as film forming material in lacquer industry as well as modifier for bitumen in road-coating industry.