Ring-opening Polymerization of the Macrocyclic Ester

Autor:	Kazuyuki Kimoto, Kentaro Yoda
Rok vydání:	1968
Předmět:	Chain-growth polymerization Bulk polymerization Polymerization Chemistry Polymer chemistry technology industry and agriculture Cationic polymerization Coordination polymerization Solution polymerization Chain transfer macromolecular substances General Chemistry Ionic polymerization
Zdroj:	Bulletin of the Chemical Society of Japan. 41:1687-1689
ISSN:	1348-0634 0009-2673
DOI:	10.1246/bcsj.41.1687
Popis:	The ring-opening polymerization of cyclic bis(ethylene isophthalate) (I) was carried out in the presence of various metallic compounds as catalysts. Among the polycondensation catalysts for ethylene terephthalate, antimony and tin compounds were very effective in the ring-opening polymerization of I. On the other hand, titanium, zinc, calcium, and aluminum compounds did not show high catalytic activity. The polymerization of I proceeded even at temperatures below the melting point of I. As the melting point of the resulting poly(ethylene isophthalate) was much lower than the polymerization temperature, the reaction system gradually melted in consequence of the progress of the polymerization reaction.
Databáze:	OpenAIRE
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