Synthesis and Characterization of Hyperbranched Poly(β-ketoester) by the Michael Addition

A novel hyperbranched poly(β‐ketoester) was synthesized from 2‐(acetoacetoxy)ethyl acrylate by the Michael addition in the presence of 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU) as catalyst. 1H NMR integration experiments revealed that the degree of branching in the poly(β‐ketoester) was remarkably hi...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Macromolecular materials and engineering 2004-10, Vol.289 (10), p.923-926
Hauptverfasser:	Kim, Yang-Bae, Kim, Hyun Kyoung, Nishida, Haruo, Endo, Takeshi
Format:	Artikel
Sprache:	eng
Schlagworte:	acrylate addition polymerization Applied sciences Exact sciences and technology hyperbranched ketoester Michael addition Organic polymers Physicochemistry of polymers Polymers with particular structures Preparation, kinetics, thermodynamics, mechanism and catalysts
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A novel hyperbranched poly(β‐ketoester) was synthesized from 2‐(acetoacetoxy)ethyl acrylate by the Michael addition in the presence of 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU) as catalyst. 1H NMR integration experiments revealed that the degree of branching in the poly(β‐ketoester) was remarkably high at a level of 82.9%. The number‐average molecular weight of the polymer was between 2 100 and 12 000 and increased with reaction temperature and conversion. Synthesis of hyperbranched polymer by Michael addition of AAEA.
ISSN:	1438-7492 1439-2054
DOI:	10.1002/mame.200400163