Homo‐ and copolymerizations of butadiene and styrene with Ln(OCOCOl3)3‐based catalyst

Homogeneous organolanthanide catalysts for the selective polymerization of styrene without aluminium cocatalysts

“…[Me 4 C 2 Cp 2 Nd (C 3 H 5 ) 2 ]Li(dioxane) (6) Onto a mixture of NdCl 3 (THF) 3 (1.09 g, 2.34 Â 10 À3 mol) and (Me 4 C 2 Cp 2 )(MgCl) 2 (THF) 4 (1.54 g, 2.34 Â 10 À3 mol) as solids, toluene (40 ml) was condensed at À80°C and allowed to warm back to room temperature within 10 min. The resulting suspension was stirred for two days.…”

“…Lanthanide complexes have been widely investigated as catalysts for diene polymerization, some of them giving high yields of cis-polybutadiene. [1][2][3][4][5][6][7] All these experiments were carried out in the presence of organoaluminium cocatalysts. On the other hand, styrene polymerization catalysed by rare-earth complexes has been much less studied.…”

Living Polymerization by Bis(phenolate) Zirconium Catalysts: Synthesis of Isotactic Polystyrene‐block‐Polybutadiene Copolymers

“…[ 14 ] Both show a high degree of stereo-and regiocontrol. Apart from statistic copolymers produced by catalytic polymerization, [ 15,16 ] polystyrene-block -polybutadiene copolymers (PS-b -PBD) are of interest due to their unique morphological properties. [ 17 ] Those block copolymers are mainly synthesized ones, their activity, and number-average molecular weight distributions of the resulting isotactic polystyrenes.…”