Browse > Article
http://dx.doi.org/10.14478/ace.2018.1008

Synthesis of Mid-range Vinylidene Content Polyisobutylene by Using BF3/Alcohol Catalyst  

Park, Min-Sup (Department of Chemistry, Chungnam National University)
Kim, Yeong-Joon (Department of Chemistry, Chungnam National University)
Publication Information
Applied Chemistry for Engineering / v.29, no.3, 2018 , pp. 307-311 More about this Journal
Abstract
Mid-range vinylidene content polyisobutylenes were prepared by using a Lewis acid catalyst. The best results were obtained when a complex catalyst composed of n-propanol as a cocatalyst and $BF_3$ as a main catalyst was used at the reaction temperature of -8 to $5^{\circ}C$ under a pressure of $2.5kg/cm^2$. The number average molecular weight ($M_n$) and viscosity of the polyisobutylenes were 500~1,000 g/mol and 20~210 cSt (at $100^{\circ}C$), respectively. The vinylidene content was 40~70% and easily varied by adjusting the reaction temperature.
Keywords
polyisobutylene; cationic polymerization; isobutene; $BF_3$ complex; vinylidene;
Citations & Related Records
연도 인용수 순위
  • Reference
1 J. J. Harrison, C. M. Mijares, M. T. Cheng, and J. Hudson, Negative ion electrospray ionization mass spectrum of polyisobutenylsuccinic anhydride: Implications for isobutylene polymerization mechanism, Macromolecules, 35, 2494-2500 (2002).   DOI
2 J. D. Burrington, J. R. Johnson, and J. K. Pudelski, Cationic polymerization using heteropolyacid salt catalysts, Top. Catal., 23, 175-181 (2003).   DOI
3 R. A. Lewis and A. Robert, Fuel compositions of poly(oxyalkylene) aminocarbamate, US Patent 4,191,537 (1980).
4 R. Kummer, D. Franz, and H. P. Rath, Polybutyl-and polyisobutylamines, their preparation, and fuel composition, US Patent 4,832,702 (1989).
5 J. M. Russo, S. Herbstman, and J. B. Furman, Gasoline detergent additive composition and motor fuel composition, US Patent 5,286,264 (1994).
6 H. Mach and P. Rath, Highly reactive polyisobutylene as a compo- nent of a new generation of lubricant and fuel additives, Lubrication Sci., 11-2, 175-185 (1999).   DOI
7 D. J. Malfer and M. D. Thomas, Mannich detergents for hydrocarbon fuels, US Patent 8,557,003 (2013).
8 C. E. Baxter Jr., C. Lobue, G. Valdez, D. Herndon, and T. Lowry, Mid-range vinylidene content polyisobutylene polymer product and precess the same, US Patent 7,037,999 (2006).
9 J. M. Kerr, J. McMahon, and J. M. Scotland, Production of polyisobutenes, US Patent 5,674,955 (1997).
10 C. Argo, S. M. Gillam, and F. Orsini, Identification of olefin end group in commercial polybutene oligomers, Polym. Bull., 44, 71-78 (2000).   DOI
11 H. Cheradame, H. Razzouk, E. Rousset, and A. Gandini, Unsaturated telechelic oligoisobutylenes: Appraisal of the transfer efficiency of some dienes, Macromol. Symp., 13/14, 417-431 (1988).
12 P. Dimitrov, J. Emert, J. Hua, S. Keki, and R. Faust, Mechanism of isomerization in the cationic polymerization of isobutylene, Macromolecules, 44, 1831-1840 (2011).   DOI