Rare earth complexes [Ln(EDBP)2(DME)Na(DME)3] as catalysts for the polymerization of 2,2-dimethyltrimethylene carbonate

Autor:	Jian-fang Yu, Dong Xiang, Weilin Sun
Rok vydání:	2011
Předmět:	chemistry.chemical_compound Polymers and Plastics chemistry Polymerization General Chemical Engineering Organic Chemistry Rare earth Inorganic chemistry Carbonate Ether Medicinal chemistry Ring-opening polymerization Catalysis
Zdroj:	Chinese Journal of Polymer Science. 29:296-299
ISSN:	1439-6203 0256-7679
DOI:	10.1007/s10118-011-1041-y
Popis:	The biphenol based discrete ion-pair rare earth complexes, [Ln(EDBP)2(DME)Na(DME)3] [Ln = Er(1), Yb(2), Sm(3)], were prepared and used as catalysts for the ring-opening polymerization (ROP) of 2,2-dimethyltrimethylene carbonate (DTC). Three complexes show moderate activities for the polymerization, and the catalytic activities increase in the following sequence: (Yb < Er < Sm). The effect of different ratios of [DTC]/[Ln], polymerization temperature and time on the polymerization was investigated. Moreover, PDTC without ether unit developed from possible CO2 elimination was prepared.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fccd98ea80a1d5038b45d72ef2f95a9e https://doi.org/10.1007/s10118-011-1041-y Zobrazit plný text záznamu Full text from SpringerLink