Synthesis of a bis(diketiminate)bromosamarium(III) complex and its activity in the polymerization of methyl methacrylate

Autor:	Ulf Schuchardt, Wanda de Oliveira, Roberto Bineli Muterle, Fabio Fabri, Regina Buffon
Rok vydání:	2007
Předmět:	chemistry.chemical_classification Molar mass Process Chemistry and Technology chemistry.chemical_element Polymer Heterogeneous catalysis Catalysis Samarium chemistry.chemical_compound chemistry Polymerization Polymer chemistry Molar mass distribution Methyl methacrylate
Zdroj:	Applied Catalysis A: General. 317:149-153
ISSN:	0926-860X
DOI:	10.1016/j.apcata.2006.10.011
Popis:	A bis(diketiminate)bromosamarium(III) complex was successfully synthesized and, after the activation with butyl lithium, was shown to be active in methyl methacrylate (MMA) polymerization. The effects of temperature, polymerization time and catalyst concentration were studied. Activities of ca. 16,000 g of poly(methyl methacrylate) (PMMA) per mol of samarium and per hour were obtained under optimum conditions (0 °C and a MMA/catalyst molar ratio of 90/1), providing a polymer with a molar mass Mn > 23.0 kg mol−1 and a molar mass distribution (Mw/Mn)
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::74c08bc9a49af76f767a5eabdef1a7af https://doi.org/10.1016/j.apcata.2006.10.011 Zobrazit plný text záznamu Full Text from ScienceDirect