Polymerization of Oxepan-2,7-dione in Solution and Synthesis of Block Copolymers of Oxepan-2,7-dione and 2-Oxepanone

Autor:	Stefan Lundmark, Ann-Christine Albertsson, Maria Sjöling
Rok vydání:	1991
Předmět:	chemistry.chemical_compound Anionic addition polymerization Materials science chemistry Polymerization Dibutyltin oxide Polymer chemistry General Engineering Copolymer Cationic polymerization Coordination polymerization Solution polymerization Ring-opening polymerization
Zdroj:	Journal of Macromolecular Science: Part A - Chemistry. 28:15-29
ISSN:	0022-233X
DOI:	10.1080/00222339108052083
Popis:	The ring-opening polymerization of oxepan-2,7-dione was initiated with 1) cationic initiators such as AlCl3 and BF3 · (C2H5)2O, 2) anionic initiators such as CH3COO−K+ and NaH, and 3) coordination-type initiators such as stannous 2-ethylhexanoate and dibutyltin oxide. The reactions were studied at 0, 20, and 40°C in methylene chloride. Oxepan-2,7-dione was also reacted with ϵ-caprolactone (2-oxepanone) in the presence of aluminum isopropox-ide as a catalyst to generate A-B block copolymers.
Databáze:	OpenAIRE
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