Published : 2011-04-30

Hydrogenation of C=C bonds in styrene-butadiene-styrene block copolymers in the presence of monocyclopentadienyl titanium(IV) catalytic systems

Abstract

Hydrogenation of C=C bonds in styrene-butadiene-styrene (SBS) block copolymers in the presence of CpTiCl2(OC6H4Y-p)/BuLi and CpTiCl2(OC6H4Y-p)/Et3Al catalytic systems (Cp = cyclopentadienyl, Bu = butyl, Et = ethyl, Y = NO2, Cl, H, CH3, OCH3) was investigated. The effect of the kind of metal alkyl, Li:Ti or Al:Ti molar ratio, copolymer composition, reaction temperature and hydrogen pressure on activity of catalytic system was investigated. The best degree of hydrogenation for SBS copolymers (80-90 %), was obtained for the systems containing p-chlorophenoxy ligand with the most electron-acceptor properties.


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Jamanek, D., Wieczorek, Z., Leszczyńska, I., & Skupiński, W. (2011). Hydrogenation of C=C bonds in styrene-butadiene-styrene block copolymers in the presence of monocyclopentadienyl titanium(IV) catalytic systems. Polimery, 56(4), 289-293. Retrieved from https://ichp.vot.pl/index.php/p/article/view/918