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Preparation of C5 Petroleum Resins Using Et3NHCl-AlCl3 as Catalyst
Corresponding Author(s) : Long Zhang
Asian Journal of Chemistry,
Vol. 25 No. 5 (2013): Vol 25 Issue 5
Abstract
The cationic polymerization of C5 refinery stream with ionic liquid (Et3NHCl-AlCl3) as catalyst was reported in this paper. Effects of polymerization conditions on the softening point and colour were investigated. Mn and aH of resins produced in toluene and chloroform were favourably comparable. It was found that resins produced in chloroform had a higher softening point (105 ºC). Et3NHCl-AlCl3 catalyst improved the colour of resin comparied with AlCl3. The optimum reaction conditions for this reaction are as follows: solvent: CHCl3; m(Et3NHCl-AlCl3) = 2.6579 g; X(AlCl3) = 0.69; T = 45 ºC. The use of Et3NHCl-AlCl3 as catalyst promises to afford easy catalyst recovery by simple phase separation while being less corrosive, easier to handle and minimising process waste water production.
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References
K. Lewtas, M.L. Garcia, J.H. Clark and K. Wilson, Petroleum Resins and Their Production with BF3 Catalyst, US Patent 6867267 (2005).
J.K. Shorrock, J.H. Clark, K. Wilson and J. Chisem, Org. Process Res. Dev., 5, 249 (2001).
F. Duchemin, V. Bennevault Celton, H. Cheradame, C. Merienne and A. Macedo, Macromolecules, 31, 7627 (1998).
J. Santarella, E. Rousset, S. Randriamahefa,A. Macedo and H. Cheradame, Eur. Polym. J., 36, 2715 (2000).
J.H. Clark and D.J. Macquarrie, Chem. Commun., 853 (1998).
J.H. Clark and C.N. Rhodes, Clean Synthesis Using Porous Inorganic Solid Catalysts and Supported Reagents; Royal Society of Chemistry, Cambridge (2000).
V.A. Ksenofontov, T.V. Vasina, Y.E. Zubarev and L.M. Kustov, React. Kinet. Catal. Lett., 80, 329 (2003).
S.W. Liu, C.X. Xie, S.T. Yu and F.S. Liu,Catal. Commun., 9, 2030 (2008).
S.W. Liu, C.X. Xie, S.T. Yu, M. Xian and F.S. Liu, Chin. J. Catal., 30, 401 (2009).
Y. Zhao, J. Long, F. Deng, X. Liu, Z. Li, C. Xia and J. Peng, Catal. Commun., 10, 732 (2009).
S. Tang, A.M. Scurto and B. Subramaniam, J. Catal., 268, 732 (2009).
S. Guo, Z.Y. Du, S.G. Zhang, D.M. Li, Z.P. Li and Y.Q. Deng, Green Chem., 8, 296 (2006).
K.R. Sherif, L.J. Shyu and C.C. Greco, Linear Alkylbenzene Formation Using Low Temperature Ionic Liquid, US Patent 5824832 (1998).
Y.X. Peng, J.L. Liu, L.R. Cun and H.S. Dai, Polym. Bull., 35, 393 (1995).