𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Polymerizations of butadiene with Ni(acac)2-methylaluminoxane catalysts

✍ Scribed by Kiyoshi Endo; Yoshiki Uchida; Yuichi Matsuda

Book ID
102483648
Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
370 KB
Volume
197
Category
Article
ISSN
1022-1352

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Polymerizations of butadiene (BD) with transition metals (MtX) and methylaluminoxane (MAO) catalysts were studied. Among the catalysts examined, nicke(II) acetylacetonate [Ni(acac)~2~] in combination with MAO revealed the highest catalytic activities for the polymerization of BD, giving high molecular weight polymers consisting of mainly cis‐1,4‐units in the microstructure. With Ni(acac)~2~‐MAO catalyst, the overall activation energy for the polymerization of BD between 0Β°C and 60Β°C was estimated to be 18 kJ/mol. From a kinetic study, the rate equation for the polymerization of BD with the Ni(acac)~2~‐MAO catalyst at 30Β°C can be expressed as follows: R~p~ = [BD]^1.8^ [Ni(acac)~2~‐MAO]^0.9^. The polymerization mechanism of the polymerization of BD with the Ni(acac)~2~‐MAO catalyst is discussed.

πŸ“œ SIMILAR VOLUMES

Copolymerization of styrene and butadien
Copolymerization of styrene and butadiene with Ni(acac)2-methylaluminoxane catalyst
✍ Kiyoshi Endo; Yuichi Matsuda πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 149 KB πŸ‘ 2 views

Copolymerization of styrene (St) and butadiene (Bd) with nickel(II) acetylacetonate [Ni(acac) 2 ]-methylaluminoxane (MAO) catalyst was investigated. Among the metal acetylacetonates [Mt(acac) x ] examined, Ni(acac) 2 showed a high activity for the copolymerization of St and Bd giving copolymers havi

Polymerization of methyl methacrylate wi
Polymerization of methyl methacrylate with Ni(acac)2-methylaluminoxane catalyst
✍ Endo, Kiyoshi; Inukai, Akihiro πŸ“‚ Article πŸ“… 2000 πŸ› John Wiley and Sons 🌐 English βš– 97 KB πŸ‘ 2 views

Polymerization of methyl methacrylate (MMA) with nickel(II) acetylacetonate [Ni(acac) 2 ] in combination with methylaluminoxane (MAO) was investigated. Ni(acac) 2 was found to be an effective catalyst for the polymerization of MMA. From a kinetic study of the polymerization of MMA with the Ni(acac)