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Random styrene (St)–butadiene (Bd) copolymer (SBR) was obtained with the catalyst system composed of Nd(P507)3, methylaluminoxane (MAO) and indene. This Nd-based catalyst system showed high activity and selectivity toward the copolymerization. Indene was proven to be the critical component to achieve the high content of St units (~33.0 %). Raising the polymerization temperature was beneficial to enhance...
Random styrene‐isoprene‐butadiene rubber (SIBR) were achieved with the catalyst system composed of neodymium isopropoxide (Nd(OiPr)3), methylaluminoxane (MAO) and indene. This catalyst proved to be highly effective in cyclohexane even at low [Al]/[Nd] ratio (ca. 50) to give styrene‐rich terpolymer with high number‐average molecular weight (Mn) and narrow molecular weight distribution (Mw/Mn). Indene...
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