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Titolo:
Replacement of benzene with regulators for the catalyzed polymerization of1,3-butadiene to high cis-1,4-polybutadiene
Autore:
Cass, P; Pratt, K; Mann, T; Laslett, B; Rizzardo, E;
Indirizzi:
Swinburne Univ Technol, Dept Engn & Sci, Hawthorn, Vic 3122, Australia Swinburne Univ Technol Hawthorn Vic Australia 3122 n, Vic 3122, Australia CSIRO, Mol Sci, Ian Wark Labs, Clayton, Vic 3168, Australia CSIRO ClaytonVic Australia 3168 Wark Labs, Clayton, Vic 3168, Australia Qenos Australia, Melbourne, Vic 3018, Australia Qenos Australia MelbourneVic Australia 3018 lbourne, Vic 3018, Australia
Titolo Testata:
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
fascicolo: 13, volume: 39, anno: 2001,
pagine: 2244 - 2255
SICI:
0887-624X(20010701)39:13<2244:ROBWRF>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
BUTADIENE; METHYLALUMINOXANE;
Keywords:
cobalt octanoate; diethylaluminum chloride; butadiene polymerization; cis-1,4-polybutadiene; 1,3,5-trimethoxybenzene; mesitylene;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Cass, P Swinburne Univ Technol, Dept Engn & Sci, Hawthorn, Vic 3122, Australia Swinburne Univ Technol Hawthorn Vic Australia 3122 122, Australia
Citazione:
P. Cass et al., "Replacement of benzene with regulators for the catalyzed polymerization of1,3-butadiene to high cis-1,4-polybutadiene", J POL SC PC, 39(13), 2001, pp. 2244-2255

Abstract

The polymerization regulators mesitylene and 1,3,5-trimethoxybenzene were investigated as suitable substitutes for benzene in the cobalt(II) octanoate/diethylaluminum chloride/water-catalyzed polymerization of 1,3-butadiene to high cis-1,4-polybutadiene. The propagation rates were reduced by 50% with the inclusion of 18 mM mesitylene or 0.17 mM trimethoxybenzene. Mesitylene was found to be an inefficient polymerization regulator because it reduced the propagation rate by a combination of regulation and destruction of the active catalyst complex. Not only did trimethoxybenzene reduce the propagation rate by effective regulation at low concentration, it also increasedthe percentage activity of cobalt to 200%, indicating that two polymer chains were propagating simultaneously from each active center. (C) 2001 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 19:26:01